WO2012046847A1 - Ctコロノグラフィに用いられる経口投与用液剤及び消化管造影用組成物 - Google Patents
Ctコロノグラフィに用いられる経口投与用液剤及び消化管造影用組成物 Download PDFInfo
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- WO2012046847A1 WO2012046847A1 PCT/JP2011/073236 JP2011073236W WO2012046847A1 WO 2012046847 A1 WO2012046847 A1 WO 2012046847A1 JP 2011073236 W JP2011073236 W JP 2011073236W WO 2012046847 A1 WO2012046847 A1 WO 2012046847A1
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- Prior art keywords
- colonography
- oral administration
- liquid
- water
- iodine
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- 231100000397 ulcer Toxicity 0.000 description 1
- 238000002609 virtual colonoscopy Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/04—X-ray contrast preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/04—X-ray contrast preparations
- A61K49/0433—X-ray contrast preparations containing an organic halogenated X-ray contrast-enhancing agent
- A61K49/0447—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound
- A61K49/0452—Solutions, e.g. for injection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/04—X-ray contrast preparations
- A61K49/0433—X-ray contrast preparations containing an organic halogenated X-ray contrast-enhancing agent
- A61K49/0447—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound
- A61K49/0495—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound intended for oral administration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/08—Solutions
Definitions
- the present invention relates to a solution for oral administration used for pretreatment of CT colonography, and a composition for gastrointestinal imaging used for the preparation of the solution for oral administration.
- CT colonography Large intestine examination (CT colonography) by computed tomography (CT) is an examination method that is becoming common with the development of helical CT and multi-row detector CT. Already in the United States and Europe, it is becoming popular as a screening test for the large intestine.
- CT colonography the stool in the large intestine is washed by intestinal tract washing, and then CT imaging is performed in a state where the colon cavity is expanded with air, and an image based on a slight X-ray contrast difference between the large intestine tissue and air. Information is configured and processed (see Non-Patent Document 1, for example).
- CT colonography does not require insertion of an endoscope or barium, and the examination time is short compared to the conventional enema X-ray examination and colonoscopy, so the burden on the subject is small.
- digital data of a two-dimensional (2D) image obtained by imaging can be reconstructed and displayed as a three-dimensional (3D) image such as a virtual endoscopic image.
- CT colonography can capture the entire abdomen including the large intestine at a time in a short period of time when only one breath is stopped, and there is a possibility of simultaneously diagnosing lesions in organs other than the large intestine.
- the operation of attaching barium sulfate to the intestinal mucosa requiring advanced techniques is not required. From these advantages, CT colonography is expected to be widely used in the future.
- CT colonography can be compared to colonoscopy, which visually removes residues, and enema X-ray, which can contrast images using barium sulfate, a powerful X-ray contrast agent. Since image information is constructed and processed based on a slight difference in X-ray contrast between tissue and air, fecal mass remaining in the large intestine is likely to be mistaken for a lesion. For this reason, it is necessary to eliminate the intestinal contents in the intestinal pretreatment in order to satisfactorily draw a two-dimensional or three-dimensional image of the large intestine using a multi-row detector CT such as MDCT (Multi-detector--row-CT) It is.
- MDCT Multi-detector--row-CT
- an intestinal irrigation method using an oral intestinal irrigant is widely used.
- an intestinal lavage method an intestinal lavage solution prepared by dissolving a powdered composition composed of an electrolyte or the like in a certain amount, for example, about 2 L of water, is taken over 2 to 4 hours.
- a large amount of oral intestinal lavage fluid is used to reduce residual stool, there is a problem that the liquid residue increases.
- the remaining water and the intestinal fluid storage site cannot obtain a contrast with the digestive tract tissue, and cannot constitute a test image useful for diagnosis. That is, the remaining water and the intestinal fluid storage site are completely undetectable regions.
- a method of using a gastrointestinal motility promoter during oral intestinal lavage has been disclosed as a method for reducing the area where lesions cannot be detected by reducing the liquid residue (see, for example, Patent Document 1).
- the amount of liquid residue in the intestinal tract can be reduced.
- Patent Document 2 can be described with an iodo-based water-soluble contrast agent by taking a composition for gastrointestinal tract imaging in which an oral intestinal irrigation agent is mixed with an iodo-based water-soluble contrast agent in the pretreatment of CT colonography.
- a method is disclosed in which an image of a liquid residue portion and an air image (gas image) are combined to run the entire large intestine and confirm the position of a lesion site together with detection of colorectal cancer.
- One of the problems when reducing the dose of intestinal lavage fluid in the pretreatment is that the contents in the intestinal tract cannot be sufficiently labeled with a contrast medium.
- This problem can be solved by performing pretreatment for a long time, for example, 3 days or 2 days. Even if a small amount of oral intestinal irrigation agent is taken within the pretreatment period or no oral intestinal irrigation agent is taken in the first place, the intestinal tract can be taken by taking the contrast agent many times over 2 days before the examination. This is because the entire contents can be labeled with a contrast agent.
- the method of taking days for pretreatment increases the burden on the subject and has a large effect on daily life for the purpose of mass screening and medical checkup, and accurate pretreatment as specified is required. It is questionable whether it is done, and it is not practical. Therefore, it is desired to minimize the number of days (hours) required for the pretreatment while sufficiently reducing the amount of the oral intestinal irrigant to ensure the subject's acceptability.
- the present invention provides a liquid for oral administration that can reduce the dose of the intestinal irrigation liquid in the intestine pretreatment and reduce the burden on the subject without sacrificing the inspection accuracy and prolonging the time required for the pretreatment. And a composition for gastrointestinal imaging used for the preparation of the liquid for oral administration.
- the present inventors have required a liquid for oral administration containing an iodine compound, an electrolyte, and a water-soluble polymer for the conventional intestinal irrigation the day before CT colonography. It has been found that taking about half of the dose in one dose or divided into multiple doses can dramatically improve the acceptability of the subject and maintain high CT colonographic imaging performance.
- the present invention has been completed.
- the present invention (1) A solution for oral administration in CT colonography digestive tract imaging, Containing an iodo compound and a water-soluble polymer or salt laxative,
- the liquid for oral administration characterized in that 300-1200 mL is taken once or divided into multiple times the day before CT colonography, (2)
- the water-soluble polymer is at least one selected from the group consisting of polyethylene glycol, polydextrose, dextran, dextrin, hydroxyethyl starch, gum arabic, pullulan, pectin, albumin and carboxymethylcellulose.
- composition for gastrointestinal tract imaging according to (9), (11) The composition for gastrointestinal imaging according to (9) or (10), wherein the iodo compound is nonionic, (12) containing an electrolyte so that the osmotic pressure is 200 to 440 mOsm / L when dissolved in water,
- One or more water-soluble polymers selected from the group consisting of polyethylene glycol, polydextrose, dextran, dextrin, hydroxyethyl starch, gum arabic, pullulan, pectin, albumin and carboxymethylcellulose, or magnesium citrate, dihydrogen phosphate
- An imaging composition (14) A combination of an iodo compound and a water-soluble polymer or salt laxative, A pretreatment agent for CT colonography, characterized in that 300 to 1200 mL is taken at one time or divided into multiple doses on the day before CT colonography, (15) The pretreatment agent for CT colonography according to the above (14), wherein 600 to 1200 mL is taken once or divided into a plurality of times the day before CT colonography, (16) A combination of an oral intestinal cleanser and an iodine contrast agent, A pretreatment agent for CT colonography, characterized in that 300 to 1200 mL is taken once or divided into a plurality of times the day before CT colonography, (17) The pretreatment agent for CT colonography according to the above (16), wherein 600 to 1200 mL is taken once or divided into a plurality of times the day before CT colonography, Is to provide.
- the burden on the subject can be remarkably reduced without sacrificing the quality of examination accuracy.
- the liquid preparation for oral administration of the present invention can be prepared in a simple and excellent preparation.
- Example 1 it is the figure which showed the three-dimensional image (endoscope similar image) in the transverse colon (T) of A group. In Example 1, it is the figure which showed the three-dimensional image (endoscope similar image) in the transverse colon (T) of B group. In Example 1, it is the figure which showed the three-dimensional image (endoscope similar image) in the transverse colon (T) of B group. In Example 1, it is the figure which showed the three-dimensional image (endoscope similar image) in the transverse colon (T) of C group. In Example 1, it is the figure which showed the three-dimensional image (endoscope similar image) in the transverse colon (T) of D group.
- the conventional pretreatment aims to clean the intestinal tract by taking a large amount of intestinal lavage fluid within a few hours and reduce fecal mass and the like.
- the present inventors only need to be able to exclude solid residue from an image obtained by imaging the inside of the intestine, and it is preferable that the solid residue is removed. Even if a solid residue or a residue in which the solid residue has changed into a liquid or gel remains, if the residue is well labeled with a contrast agent, the extraction ability is as high as before.
- the amount that can be maintained, and a liquid containing an iodine-based water-soluble contrast agent in an oral intestinal irrigation agent containing an electrolyte and a water-soluble polymer is half the amount used for conventional intestinal irrigation the day before CT colonography It has been found that the amount of solid residue remaining in the intestinal tract can be effectively reduced by taking a certain amount.
- a solid residue In a three-dimensional image such as a virtual endoscopic image, it is difficult to distinguish a solid residue from a polyp lesion.
- a two-dimensional image such as an axial image.
- the inside of the solid residue has a high CT value because it is labeled with an oral contrast medium, but in a polyp lesion, the CT value is usually as low as 100 HU or less.
- a small bubble gas is mixed in the solid residue, but no small bubble gas is mixed in the polyp lesion.
- the solid residue and the polyp lesion can be distinguished by the two-dimensional image.
- the liquid for oral administration of the present invention is a liquid for oral administration in CT colonography gastrointestinal tract imaging, and contains an iodine compound, an electrolyte, a water-soluble polymer and / or a saccharide, and the day before CT colonography.
- 300-1200 mL is taken once or divided into a plurality of times.
- the dose of the oral intestinal irrigation agent is smaller than before, and the number of days for the pretreatment is successfully reduced to only one day before the examination. Therefore, it can also be incorporated into a hospital examination system so that many patients can be examined simply and in a short time as a group screening or a medical checkup system.
- 300-1200 mL may be taken the day before CT colonography
- 300-1200 mL may be taken at a time, and it may be taken in multiple doses.
- 350 to 450 mL may be taken in 2 to 3 divided doses
- 100 to 400 mL may be taken once or in multiple divided doses.
- the dose per dose may be taken at once, or may be taken in small portions within 30 minutes.
- the amount of the liquid for oral administration of the present invention to be taken on the day before CT colonography can be determined within the range of 300 to 1200 mL according to the age, weight, condition, etc. of the subject of CT colonography.
- it may be taken after meals, may be taken before meals or at the same time as meals, and may be taken after waking up, between meals or before falling asleep.
- the liquid preparation for oral administration of the present invention is in a state where there is no solid residue from the inside of the intestinal tract at the time of CT colonography examination by taking 600 to 1200 mL at one time or divided into multiple times on the day before CT colonography.
- the liquid state may be such that only a gel residue is present. That is, it is possible to obtain an intestinal tract cleaning effect that is almost the same as when a large amount of about 2 L of the intestinal tract cleaning solution is taken on the day of CT colonography.
- 350 to 450 mL is preferably taken separately after breakfast and after dinner.
- the liquid for oral administration of the present invention can be taken on the day before CT colonography at a volume lower than 600 mL, for example, 100 to 450 mL at a time or divided into 2 to 3 times.
- the total dose is lower, it is preferable to take 2 to 3 times, more preferably 2 times after breakfast and after dinner, rather than taking once.
- the intestinal tract is the same as when 600 to 1200 mL is taken. Inside washing and labeling is performed.
- the liquid for oral administration of the present invention should be taken in a short time because the dose per dose is sufficiently small compared to the normal volume (2 L) of the oral intestinal cleansing agent used in the conventional large intestine examination.
- the burden on the subject is small.
- the liquid for oral administration of the present invention is preferable as a “medicine for examination” for elderly people. It is also preferred as a “test drug” for mass screening for a wide range of age groups including the elderly.
- Contrast agents used in CT colonography are generally divided into barium such as barium sulfate and iodine-based water-soluble contrast agents. Barium is difficult to mix uniformly with the residue in the intestinal tract, and precipitates due to the difference in specific gravity. In addition, since the CT value is high, there is a case where the lesion is hidden by causing pseudoenhancement, and further, there is a problem that CT colonography and endoscopy cannot be performed on the same day. Since the liquid for oral administration of the present invention uses an iodine-based water-soluble contrast agent instead of barium, a more reliable imaging result can be obtained by CT colonography, and CT colonography and endoscopy are performed on the same day. It is also possible.
- the iodo compound contained in the liquid for oral administration of the present invention is not particularly limited as long as it is a water-soluble organic compound that contains one or more iodo atoms in the molecule and can be used as a contrast agent.
- water-soluble organic iodo compounds include triiodobenzenes in which iodine is bonded to the 2, 4 and 6 positions of the benzene ring.
- the iodo compound contained in the liquid for oral administration of the present invention may be an ionic compound or a nonionic compound, but is preferably a nonionic compound. This is because nonionic iodo compounds have a better taste and are easier to take than ionic iodo compounds and are less susceptible to allergic reactions.
- the ionic iodo compound examples include amidotrizoic acid (amidotrizoic acid, chemical name 3,5-diacetamino-2,4,6-triiodobenzoic acid), sodium amidotrizoate meglumine, amidotrizoic acid meglumine, sodium iotaramate, Examples thereof include meglumine iotalamate, meglumine iotroxate, iotrolane, ioxaglic acid, ioxirane, iopromide and the like.
- nonionic iodo compounds include iopamidol, iohexol, ioversol, and iomeprol.
- Each iodine compound may have side effects such as anaphylaxis-like reaction, and can be appropriately selected depending on the patient background such as allergic constitution.
- Use of sodium amidotrizoate meglumine is preferable from the standpoint of pharmaceutical stability and cost, particularly for patients who use an ionic iodo compound and have a low risk of side effects such as allergic constitution.
- the CT value of the residue is preferably 300 HU or more, and it is uniformly maintained in the range of 300 HU to 700 HU at each site in the digestive tract. It is preferable that When the CT value of the residue is within the above range, the residue and the polyp lesion (less than 100 HU) can be sufficiently distinguished even when imaged at a low dose.
- the CT value of the liquid residue reservoir can be adjusted by the iodine content and dose of the liquid for oral administration of the present invention to be taken the day before CT colonography. For this reason, the iodine content of the liquid for oral administration of the present invention can be appropriately adjusted in consideration of the dose, the CT value of the residue in the CT colonography after taking, the condition of the subject, and the like.
- the iodine content of the liquid for oral administration of the present invention is preferably 90 mg / mL or less, more preferably 70 mg / mL or less, further preferably 35 mg / mL or less, and 28 mg / mL or less. It is particularly preferred.
- the iodine content of the liquid for oral administration of the present invention is preferably 3.5 mg / mL or more, more preferably 7 mg / mL, still more preferably 10 mg / mL or more, and 15 mg. / ML or more is particularly preferable.
- the liquid preparation for oral administration of the present invention contains at least one of a water-soluble polymer and a salt laxative in addition to the iodine compound.
- a water-soluble polymer and a salt laxative in addition to the iodine compound.
- an iodine compound and a water-soluble polymer are included.
- the liquid for oral administration of the present invention may contain both a water-soluble polymer and a salt laxative.
- water-soluble polymer contained in the liquid for oral administration of the present invention examples include polyethylene glycol, polydextrose, dextran, dextrin, hydroxyethyl starch, gum arabic, pullulan, pectin, carboxymethylcellulose and the like.
- a water-soluble polymer selected from the group consisting of polyethylene glycol, polydextrose, dextran, hydroxyethyl starch, gum arabic, pullulan and pectin is preferable from the viewpoint of pharmaceutical stability and the like.
- the liquid preparation for oral administration of the present invention particularly preferably contains polyethylene glycol as a water-soluble polymer.
- the molecular weight of polyethylene glycol is preferably from 2000 to 8000, more preferably from 3000 to 7000.
- Examples of the salt laxative contained in the liquid for oral administration of the present invention include magnesium citrate, sodium dihydrogen phosphate, disodium hydrogen phosphate and the like.
- the concentration of the salt laxative contained in the liquid for oral administration of the present invention is not particularly limited as long as it has a laxative effect, and considers the type of salt laxative, the condition of the subject to be taken, etc. And can be adjusted as appropriate.
- sodium ion is 60 mEq / L
- potassium ion is 20 mEq / L
- magnesium ion is 3 mEq / L
- chloride ion is 50 mEq / L
- phosphate is 10 mmol / L
- citrate ion is 35 mEq / L
- lactate ion is If it is 20 mEq / L, the balance of the electrolyte in the living body is not excessively affected. For this reason, a salt laxative is added so that the content in the liquid for oral administration of the present invention is higher than these concentrations.
- the liquid for oral administration of the present invention In the pretreatment using the liquid for oral administration of the present invention, it is sufficient that the solid residue is effectively removed from the intestinal tract of the subject at the time of the CT colonography examination, and the liquid or gel content is contained inside the intestinal tract. A thing may remain. That is, the liquid preparation for oral administration of the present invention is not intended to completely or completely remove the contents such as stool from the intestinal tract. The burden on the subject is further reduced.
- the osmotic pressure of the solution for oral administration of the present invention is preferably 200 to 440 mOsm / L. By setting the osmotic pressure within this range, it is possible to minimize fluctuations in the serum electrolyte balance and osmotic pressure in the living body caused by taking the liquid for oral administration.
- the solution for oral administration of the present invention is more preferably adjusted to an isotonic range of 280 to 320 mOsm / L or an osmotic pressure range close to isotonicity.
- the liquid preparation for oral administration of the present invention may be a preparation that adjusts the osmotic pressure in the intestinal tract together with taking water or the like, for example, the intestinal rinsing liquid described in Japanese Patent No. 4131266.
- the osmotic pressure of the liquid for oral administration of the present invention may be higher than the osmotic pressure range, for example, osmotic pressure of 700 mOsm / L or less.
- the liquid for oral administration of the present invention preferably contains an electrolyte in order to adjust to a desired osmotic pressure.
- the type and amount of electrolyte contained in the liquid for oral administration of the present invention are appropriately selected so that the osmotic pressure of the liquid for oral administration falls within the above range.
- the electrolyte refers to a substance that is dissociated into an ion in a solution.
- Na + , K + , Ca 2+ , Mg 2+ , Cl ⁇ , HCO 3 ⁇ , SO 4 2 ⁇ , HPO 4 2 ⁇ , organic acid group, An organic base etc. can be mentioned.
- salt laxatives are also included in the electrolyte.
- Examples of the electrolyte contained in the liquid for oral administration of the present invention include the same electrolytes used for electrolyte infusions administered intravenously.
- sodium ion sources include sodium chloride, sodium acetate, sodium citrate, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium sulfate, sodium lactate, etc.
- potassium ion sources include potassium chloride.
- calcium ion sources include calcium chloride, calcium gluconate, calcium pantothenate, calcium lactate, calcium acetate Calcium glycerophosphate, etc.
- magnesium ion sources include magnesium sulfate, magnesium chloride, magnesium acetate, magnesium citrate, etc.
- phosphate ion sources include sodium dihydrogen phosphate, sodium dihydrogen phosphate Sodium glycerophosphate, sodium chloride, potassium chloride, calcium chloride, magnesium chloride and the like as the chloride ion source, and sodium bicarbonate as the bicarbonate ion source.
- the liquid preparation for oral administration of the present invention may further contain a saccharide.
- a saccharide for CT colonography pretreatment performed as a screening test, a mixture of an electrolyte and a saccharide is used because it has excellent patient acceptability including formulation stability and ease of administration. It is also preferable to add.
- the saccharide contained in the liquid for oral administration of the present invention may be either sugar or sugar alcohol.
- Specific examples of the saccharide contained in the liquid for oral administration of the present invention include sucrose, sorbitol, xylitol, erythritol, mannitol, trehalose, lactitol, lactose, maltitol, palatinose, raffinose, glycerin and the like. it can.
- xylitol, sorbitol, lactulose, lactitol and raffinose are particularly preferable for reasons such as formulation stability and patient acceptability including ease of administration.
- the sum of the blending amounts of the water-soluble polymer and the electrolyte in the liquid for oral administration of the present invention, or the sum of the blending amounts of the water-soluble polymer, the electrolyte and the saccharide is, for example, 2 to 40 in a 400 mL liquid preparation. Grams, preferably 10-30 grams.
- the liquid for oral administration of the present invention has Na + : 30 to 150 mEq / L, K + : 3 It is preferable to add an electrolyte so as to be ⁇ 20 mEq / L, Cl ⁇ : 20 to 70 mEq / L, and HCO 3 ⁇ : 10 to 50 mEq / L.
- magnesium ions it is preferable to adjust the magnesium ion concentration in the liquid for oral administration to 40 to 120 mEq / L and mix it.
- sulfate ions it is preferable to adjust the concentration so that the sulfate ion concentration in the liquid for oral administration is 40 to 120 mEq / L.
- saccharides are used in addition to the electrolyte and the water-soluble polymer, the amount of saccharides used is 2 to 40 grams, preferably 5 to 10 grams, in 400 mL of oral administration liquid.
- the liquid preparation for oral administration of the present invention preferably further contains a gastrointestinal function promoter in addition to the iodine compound, the electrolyte, the water-soluble polymer, and the salt laxative.
- the gastrointestinal function promoter facilitates excretion of the liquid for oral administration taken or a mixture of the liquid for oral administration and intestinal contents, and can reduce the amount of residues in the intestinal tract during CT colonography.
- the liquid for oral administration of the present invention further contains a gastrointestinal function promoter.
- Examples of the gastrointestinal function promoter contained in the liquid for oral administration of the present invention include serotonin 5-HT 4 receptor stimulants.
- Serotonin 5-HT 4 receptor stimulants include benzamide derivatives represented by the general formula described in Japanese Patent Publication No. 3-54937 “Claims” including mosapride citrate, cisapride, metroclopra A mid and the like can be mentioned.
- mosapride citrate is most preferable because it has few side effects such as induction of arrhythmia (Medical Review Co., Ltd., 1998, “Mosaprid and gastrointestinal motility”).
- Mosapride citrate is appropriately adjusted so that the daily dose (that is, the amount used in the pretreatment for one CT colonography) is 5 to 40 mg, and is contained in the liquid for oral administration of the present invention. It is preferable.
- a widely used colonic stimulant laxative can also be included in the liquid for oral administration of the present invention as a gastrointestinal function promoter.
- the colonic stimulant laxative include sodium picosulfate, bisacodyl, sennoside and the like.
- Colonic stimulant laxatives are used so that the amount used in the pretreatment for a single CT colonography is the prescribed daily dose of the preparation, or as a dose for pretreatment of the colon test.
- the liquid can be contained in the liquid for oral administration of the present invention by adjusting it appropriately so that it becomes a prescribed amount.
- picosulfate sodium is appropriately adjusted so that the daily dose (that is, the amount used in the pretreatment for one CT colonography) is 5 to 150 mg, so that the liquid for oral administration of the present invention is used. It is preferable to contain.
- the liquid preparation for oral administration of the present invention preferably further contains dimethylpolysiloxane in addition to the iodine compound, the water-soluble polymer, and the salt laxative. Since dimethylpolysiloxane exhibits a defoaming action on bubbles in the foamy mucus, it is possible to improve the reading accuracy and reading efficiency of the lesion of the imaged video shell.
- Examples of the dimethylpolysiloxane contained in the liquid for oral administration of the present invention include “Gascon (registered trademark)” marketed as a gastrointestinal gas disinfectant.
- the amount of dimethylpolysiloxane to be contained in the liquid for oral administration of the present invention is 30 to 120 mg, preferably 40 to 30 mg / day, that is, the daily dose in an adult (ie, the amount used in pretreatment for one CT colonography). It is preferable to adjust appropriately so that it may become 80 mg, and to make it contain in the liquid for oral administration of this invention.
- the liquid for oral administration of the present invention not containing dimethylsiloxane and the liquid containing dimethylpolysiloxane are each taken orally in a single dose or divided into multiple doses. May be.
- dimethylpolysiloxane has conventionally been used to improve abdominal symptoms caused by gas in the gastrointestinal tract, remove gastric foamy mucus during gastroscopy, and eliminate intestinal gas during abdominal X-ray examinations.
- it was never used as a pretreatment for CT colonography.
- the antifoaming action of dimethylpolysiloxane is different from the role of conventional dimethylpolysiloxane, and as a result, it is unexpected that the reading accuracy and reading efficiency of lesions from captured images can be improved. .
- ⁇ ⁇ Iodine compounds, water-soluble polymers, and electrolytes often have unique tastes and odors. Therefore, it is preferable to apply taste-masking and flavoring means to the liquid for oral administration of the present invention.
- flavor can be mix
- the fragrance to be contained in the liquid for oral administration of the present invention is not particularly limited as long as it masks the odor caused by the water-soluble polymer or electrolyte when the liquid for oral administration is taken orally. Absent.
- food flavors are suitable, and fruit flavors are particularly suitable.
- fruit flavors include flavors such as lemon, orange, grapefruit, lemon lime, mandarin orange, persimmon, strawberry, cherry, apple, apricot and raspberry.
- citrus liquid fragrances such as lemon, orange, grapefruit and lemon lime are optimal because they give a refreshing feel.
- flavor the essential oil obtained from these fruits by the pressing method or steam distillation can be used.
- Limonene, citral, citronellal, linalool, octanal, etc. can be used alone or in combination. Among them, it is preferable to use a citrus fragrance containing limonene. Such fragrances are commercially available from fragrance manufacturers, and it is practical to use them.
- the liquid fragrance includes a water-soluble liquid fragrance in which the fragrance component is extracted or dissolved with hydrous alcohol, and an oil-soluble liquid fragrance in which the fragrance component is dissolved in an oily solvent. Furthermore, what added the preservative etc. to the fragrance
- flavor component (essential oil) is also contained.
- the liquid fragrance it is preferable to use an oil-soluble or essential oil-derived fragrance rather than a water-soluble liquid fragrance from the viewpoint of storage stability.
- fragrance In the case of using a fragrance, it is necessary to adjust the addition amount in consideration of volatilization in each manufacturing process, adsorption to the package, and permeation dissipation from the package.
- a preferred addition amount is 0.001 to 0.3% by mass of the solution for oral administration.
- the fragrance is directly adsorbed on the electrolyte powder. It is necessary to avoid mixing fragrances with sugars in advance because there is a risk of generation of hydrogen gas or methane gas.
- the sweetener used in the present invention makes it easy to drink when taking a large amount of liquid for oral administration.
- a sweetener there must be no or very little generation of hydrogen gas or methane gas in the intestine.
- saccharides especially sucrose (purified) White sugar
- the preferred amount of these sweeteners is 0.001 to 3% by mass of the solution for oral administration. More preferably, the content is 0.01 to 0.3% by mass.
- the liquid preparation for oral administration of the present invention can contain other components as long as the effects of the present invention are not impaired.
- the liquid for oral administration of the present invention may contain ascorbic acid and / or one or more salts thereof (ascorbate component).
- the ascorbate component is preferably added in the range of 4 to 15 g per liter of the liquid for oral administration of the present invention.
- the liquid for oral administration of the present invention preferably further contains an ascorbate component.
- Preferred salts of ascorbic acid are alkali metal salts and alkaline earth metal salts such as sodium ascorbate, potassium ascorbate, magnesium ascorbate and calcium ascorbate.
- a particularly preferred salt of ascorbic acid is sodium ascorbate.
- the ascorbate component includes both ascorbic acid and one or more salts thereof.
- ascorbic acid and its salts are present in a weight ratio in the range of 1: 9 to 9: 1.
- Ascorbic acid and its salts may actually be provided as hydrates. If hydrates are used, the weights and / or weight ratios mentioned here are the weights and / or weight ratios of ascorbic acid or its salts excluding hydrated water.
- ascorbic acid and its salts are in the range of 2: 8 to 8: 2, more preferably 3: 7 to 7: 3, even more preferably 4: 6 to 6: 4, for example 4.7: Present in a weight ratio of 5.9.
- the liquid or gel residue in the deep part of the large intestine can also contain the iodine compound well.
- the pretreatment using the solution for oral administration of the present invention is particularly useful for examining deep colon sites such as the colon and rectum.
- the liquid for oral administration of the present invention is a liquid oral intestinal cleansing agent (intestinal lavage fluid) used when performing intestinal lavage as a pretreatment for colonoscopy, enema X-ray examination, and CT colonography, What added the contrast agent which uses an iodine compound as an active ingredient may be used. That is, an oral administration solution of the present invention can be prepared by combining an oral intestinal irrigation agent with an iodine water-soluble contrast agent and adjusting the iodine content to 3.5 to 90 mg / mL.
- intestinal lavage fluid intestinal lavage fluid
- an oral administration solution of the present invention can be prepared by combining an oral intestinal irrigation agent with an iodine water-soluble contrast agent and adjusting the iodine content to 3.5 to 90 mg / mL.
- Such an oral intestinal cleansing agent is not particularly limited as long as it contains at least one of a water-soluble polymer and a salt laxative, so that the osmotic pressure at the time of taking is 200 to 440 mOsm / L.
- a water-soluble polymer and a salt laxative so that the osmotic pressure at the time of taking is 200 to 440 mOsm / L.
- Those containing an electrolyte are preferred, and those containing a sweetener and / or a fragrance are also preferred.
- a composition comprising a combination of polyethylene glycol and an electrolyte (for example, “NIFREC (registered trademark)” blended internal preparation (for example, manufactured by Ajinomoto Pharmaceutical Co., Ltd.) according to the invention disclosed in JP-A-1-125319 )),
- a composition comprising a combination of at least one water-soluble polymer selected from dextran, dextrin, hydroxyethyl starch, polydextrose, gum arabic, and pectin and an electrolyte (JP-A-2-25424, JP-A-2- 3-206046), a composition composed of a combination of erythritol or xylitol and an electrolyte (Japanese Patent Laid-Open No.
- 3-284620 a composition composed of a combination of fructooligosaccharide and an electrolyte (Japanese Patent Laid-Open No. 3-291228) ), Lactitol, maltitol and carboxymethylcellulose A composition containing at least one selected from the above and an electrolyte (Japanese Patent Laid-Open No. 5-255092), magnesium citrate (Japanese Patent Laid-Open No. 5-306221), sodium dihydrogen phosphate, disodium hydrogen phosphate, etc. And an isotonic aqueous solution using a salt laxative and an isotonic agent.
- the liquid for oral administration of the present invention can be prepared by preparing a concentrated solution containing each component in advance and diluting with an appropriate amount of water at the time of taking.
- the concentrated liquid of each component may take a form filled in an aluminum can, a flexible container, a rigid or semi-rigid container.
- the solution is of course sterilized or sterilized by a conventional method (Japanese Patent Laid-Open Nos. 9-58747, 8-253220, etc.).
- each powdered, tableted or granulated component can also be prepared by preparing each powdered, tableted or granulated component and dissolving them in an appropriate amount of water at the time of taking.
- a composition in which two or more kinds of components are mixed in advance may be prepared, and the composition and other components may be dissolved in an appropriate amount of water at the time of taking.
- an intestinal lavage solution having an osmotic pressure of 200 to 440 mOsm / L is prepared by containing at least one of a water-soluble polymer and a salt laxative and, if necessary, an electrolyte other than the salt laxative and dissolving it in a predetermined amount of water.
- a powder preparation for example, the above-mentioned “Nifrec (registered trademark)” internal preparation (manufactured by Ajinomoto Pharmaceutical Co., Inc.) relating to the invention described in JP-A-1-125319, and an iodine compound as active ingredients
- the solution for oral administration of the present invention can be prepared by dissolving the contrast agent in a predetermined amount of water at the time of taking. In addition, it may replace with a powder formulation and you may use what was formulated into the dosage form of the tablet or the granule.
- a composition containing at least one of a water-soluble polymer and a salt laxative and an iodine compound is prepared in advance, At the time of taking, the composition and other components such as sweeteners and fragrances may be dissolved in an appropriate amount of water.
- a composition containing at least one of a water-soluble polymer and a salt laxative and an iodine compound an electrolyte other than the salt laxative, dimethylpolysiloxane, and a gastrointestinal function promoter
- the composition and other components such as sweeteners and fragrances may be dissolved in an appropriate amount of water.
- a composition containing at least an iodine compound and a water-soluble polymer or a salt laxative is referred to as a composition for gastrointestinal tract imaging of the present invention. That is, the composition for gastrointestinal tract imaging of the present invention contains an iodine compound, at least one of a water-soluble polymer and a salt laxative, and has an iodine content of 3.5 to 90 mg by dissolving or diluting in water. / ML aqueous solution is prepared.
- compositions containing components such as electrolytes other than salt laxatives, dimethylpolysiloxane, gastrointestinal function promoters, sweeteners, and fragrances are also included in the composition for gastrointestinal imaging of the present invention.
- the osmotic pressure of the aqueous solution obtained by dissolving or diluting the composition for gastrointestinal tract imaging of the present invention in water is preferably 200 to 440 mOsm / L.
- the components other than the iodine compound constituting the liquid for oral administration of the present invention are mixed after the particle diameter is adjusted so that each component can be mixed. It is preferable.
- a composition containing all components constituting the liquid preparation for oral administration of the present invention including an iodine compound is filled in an airtight container, hermetically packaged and placed in circulation.
- a daily dose or a single dose for example, dissolve in 350 to 450 mL when taking multiple doses.
- the amount used is preferably adjusted so as to be the inner volume per package.
- the composition for gastrointestinal tract imaging of the present invention is filled in a package such as a bag or can made of metal such as aluminum lined with a thermoplastic resin, or a plastic package formed of a thermoplastic resin.
- a package such as a bag or can made of metal such as aluminum lined with a thermoplastic resin, or a plastic package formed of a thermoplastic resin.
- the perfume containing limonene is easily adsorbed on or dissipated through the polyolefin-based thermoplastic resin, it is necessary to form a package in which a sufficient amount of perfume remains during use.
- the thickness of the resin layer as well as the area of the inner surface of the package affects the amount of adsorption and permeation, the resin layer is in a range that does not cause a decrease in the seal strength of the package and that a sufficient amount of fragrance remains during use. It is necessary to set the thickness and the like.
- the package has a limonene adsorption amount or permeation dissipation amount of 1000
- composition for gastrointestinal tract imaging of the present invention can be transferred from a packaged body to a container, dissolved in water and taken.
- the package itself is made of a plastic container that can hold the required dissolved water (for example, 200-1200 mL), and the dissolved water is directly poured into the package during use, the container for dissolution will be separated. This is convenient because there is no need to prepare.
- the plastic container is preferably formed of a polyolefin-based thermoplastic resin.
- the polyolefin-based thermoplastic resin include polyethylene and polypropylene.
- Soft polyolefin has good adhesion between resins necessary for molding of a container, but has high gas adsorbability / permeability of a fragrance containing limonene.
- hard polyolefin has low gas adsorbability / permeability but poor adhesion between resins.
- a soft polyolefin is used for the inner layer (the surface in contact with the composition for gastrointestinal tract contrast), and a hard polyolefin is further formed thereon.
- the innermost layer is composed of soft polyolefin, hard polyolefin on the outer side, and soft polyolefin on the outer side to make a total of three layers.
- the thickness of the innermost layer is preferably formed of a polyolefin-based thermoplastic resin of 100 ⁇ m or less, preferably 50 ⁇ m, in order to suppress a decrease due to adsorption or permeation of a fragrance containing limonene.
- a plastic packaging body is formed with two layers of an inner layer made of soft polyolefin and an outer layer made of hard polyolefin, the total thickness is set to 70 to 200 ⁇ m, and the thickness of each of the inner layer and the outer layer is set to 35 to 100 ⁇ m. Is preferred.
- the total thickness is 70 to 200 ⁇ m
- the thickness of the layer is preferably 15 to 70 ⁇ m, particularly 20 to 40 ⁇ m.
- the transmittance is preferably 20 cc / m 2 ⁇ day ⁇ atm (25 ° C.) or less.
- thermoplastic resin such as polyethylene terephthalate or polyamide
- a thermoplastic resin such as polyethylene terephthalate or polyamide
- the shape of the package is not particularly limited, but when a plastic container that can store dissolved water is also used, it is preferable to provide an inlet for dissolving water and to provide a bottom surface that can stand when dissolved. .
- it has two vertically long triangular side walls that are longer than the bottom, an inlet attached to the upper part of the side wall, and a bamboo leaf attached to the lower part of the side wall. What has a bottom face is preferable.
- the two side walls and the bottom are made of flexible plastic, the inlet is made of hard plastic, and the inlet is covered.
- the two side walls and bottom are made of flexible plastic, and the bottom is folded inside until dissolved water is added, so that air can be drawn from the package (container) until dissolved water is injected. If eliminated, the whole can be made compact, which is convenient for storage and transportation.
- the two side walls are preferably made of a transparent or translucent plastic so that the inner volume can be visually confirmed. By providing a scale indicating the amount of dissolved water on the side wall, a meter is not required for injecting the dissolved water, and the dose can be confirmed with eyes when taking the solution.
- composition for gastrointestinal tract imaging of the present invention can be prepared by mixing predetermined components by a conventionally known method.
- it is more convenient to store and transport the air as much as possible because it can prevent deterioration of quality of the active ingredient unstable to oxygen over time and is not bulky.
- the package can be further sealed in a gas-impermeable exterior bag formed of an aluminum laminate film or the like.
- each component and composition used for preparing the liquid preparation for oral administration of the present invention including the composition for gastrointestinal tract imaging of the present invention be one kit or packaged product.
- a combination of the aforementioned oral intestinal cleanser and an iodine contrast agent, a combination of iodine compounds prepared separately and a water-soluble polymer, or a combination of iodine prepared separately be blended, a combination of iodo compounds prepared separately, a water-soluble polymer and a salt laxative so that they can be blended, etc. It can be a therapeutic agent.
- kits or packaged products are not particularly limited in its production and can be appropriately performed by a conventional method. That is, each component and composition used in order to prepare the liquid for oral administration of this invention at least should just be contained in one packaging form.
- kits and packages preferably contain instructions for taking the order, how to take it, symptoms that should be stopped, and notes that describe the response to side effects.
- cups, dose check sheets, clocks, lysing solutions, etc. can be placed.
- an osmotic pressure is 200 to 440 mOsm / L by containing an electrolyte and a water-soluble polymer (a saccharide, dimethylpolysiloxane, and a gastrointestinal function promoter as required) and dissolving in a predetermined amount of water.
- a powder preparation capable of preparing an intestinal irrigation solution is filled in a plastic container (see Japanese Patent Application Laid-Open No. Hei 4-259461), and liquids and tablets containing an iodine compound in the container, and instructions and side effects are described.
- the blister is contained in a container containing an electrolyte and a water-soluble polymer (a saccharide, dimethylpolysiloxane, and a gastrointestinal function promoter if necessary) and filled with an intestinal lavage fluid having an osmotic pressure of 200 to 440 mOsm / L.
- a pack may be attached.
- each component and composition of the liquid for oral administration of the present invention can be accommodated in three compartments, which are also referred to as triple bags, which are divided by a fusion part of a flexible plastic bag.
- a good example is the kit bag.
- This kit bag is characterized by being able to prepare a liquid for oral administration by peeling the intermediate fusion part by pressing with a hand or the like during use and mixing each component or composition of powder and a solution thereof. have. If instructions and cautions are printed on the surface of the kit bag, a single bag can be made into a kit (Japanese Patent Application No. 2000-2619).
- the contrast medium stimulates inflammation of the intestinal mucosa, and there is a concern about adverse effects on diseased areas such as ulcers, so steroids should be included in kits or packages to prevent inflammation. May be.
- Example 1 The day before the CT colonography examination, when taking 800 mL of the liquid for oral administration of the present invention (Group A, 2 subjects), it does not contain a water-soluble polymer and does not contain a salt laxative (sufficient to exert a laxative effect).
- 800 mL of an iodo compound-containing solution containing no electrolyte of concentration
- 400 mL of the same solution as Group A half amount of Group A
- the colon images obtained by CT imaging were evaluated when mosapride citrate 40 mg was taken (Group D, 1 patient).
- the specific pretreatment for each group is as follows.
- the iodine-based water-soluble contrast agents are trade names “Omni Park (registered trademark) Note 350 (Daiichi Sankyo Pharmaceutical)” (generic name: Iohexol), “Ioberin (registered trademark) Note 350 (Taiyo Pharmaceutical Co., Ltd.)” (Generic name: iohexol) or "Optilei (registered trademark) 350 (manufactured by Covidien Japan)” (generic name: ioversol) was used.
- Group A A total of 400 mL of 380 mL of an oral intestinal cleanser (trade name “NIFLEC (registered trademark) internal preparation”, manufactured by Ajinomoto Pharmaceutical Co., Ltd.)) mixed with 20 mL of an iodine-based water-soluble contrast agent at 7:00 AM on the day before the examination. Was taken at 19:00 in the evening the day before the test, and 400 ml of the same content was taken.
- the total daily dose was 800 mL (760 mL of oral intestinal cleanser and 40 mL of iodine-based water-soluble contrast medium).
- Group B At 7:00 am on the day before the examination, take a total of 400 ml of sports drink (trade name: Pocari Sweat, Otsuka Pharmaceutical Co., Ltd.) mixed with 20 ml of iodine-based water-soluble contrast agent. Of 400 mL. The total daily dose was 800 mL (760 mL of sports drink and 40 mL of iodine-based water-soluble contrast agent).
- Group C Total of 20 ml of iodine-based water-soluble contrast agent blended with 380 ml of oral intestinal cleanser (trade name “NIFLEC (registered trademark) blended internal medicine” (manufactured by Ajinomoto Pharmaceutical Co., Inc.)) at 21:00 before sleep on the day before the examination 400 mL was taken internally.
- the total daily dose was 400 mL (oral intestinal irrigation agent 380 mL and iodine-based water-soluble contrast medium 20 mL).
- Group D A total of 400 mL of 380 mL of an oral intestinal cleanser (trade name “NIFREC (registered trademark) internal preparation”, manufactured by Ajinomoto Pharmaceutical Co., Ltd.)) mixed with 20 mL of an iodine-based water-soluble contrast agent at 7:00 AM on the day before the examination.
- an oral intestinal cleanser trade name “NIFREC (registered trademark) internal preparation”, manufactured by Ajinomoto Pharmaceutical Co., Ltd.
- 20 mg of mosapride citrate trade name “Gasmotin (registered trademark)”, manufactured by Dainippon Sumitomo Pharma Co., Ltd.
- 400 mL of the same content was taken, followed by 20 mg of mosapride citrate with a small amount of water.
- the total daily dose was 800 mL (oral intestinal cleansing agent 760 mL and iodine water-soluble contrast medium 40 mL) and mosapride citrate 40 mg.
- MDCT imaging was performed at 9:00 am the next day after taking an oral intestinal cleanser containing an iodine-based water-soluble contrast agent or a sports drink.
- MDCT used a multi-slice CT apparatus (manufactured by Toshiba Medical Systems).
- Two types of three-dimensional images are obtained from data obtained by performing three-dimensional image processing using colon analysis software (manufactured by AZE) capable of three-dimensional image processing and injecting carbon dioxide gas transanally.
- An image and an enema-like image obtained by synthesizing a liquid residue image and a gas image) were constructed.
- an axial image was constructed as a two-dimensional image, and the degree of residue labeling with the contrast agent and the properties of the residue were compared in the three groups A to C, and the quality of intestinal pretreatment by each method was evaluated.
- Residues were evaluated by dividing the large intestine into 6 large intestine sections: cecum (C), ascending colon (A), transverse colon (T), descending colon (D), sigmoid colon (S), and rectum (R). It was.
- Table 1 shows the results of evaluating the degree of labeling of residues in the intestinal tract with an iodine-based water-soluble contrast agent
- Table 2 shows the results of evaluating the state of residues in the intestinal tract.
- “Good” indicates that the contrast medium was uniformly mixed with the residue
- “Moderate” indicates that the contrast medium was unevenly mixed with the residue
- “Low” indicates that the contrast medium was mixed with the residue. It means that there is little mixing of the contrast agent or no contrast agent is contained.
- “-” indicates that no evaluation was made because no residue was present.
- FIG. 1 shows a three-dimensional image (endoscope-like image) in the transverse colon (T) of group A.
- T transverse colon
- Group B which did not take any oral intestinal cleanser
- Group C which took only half of the A and D groups, depending on the large intestine segment
- a region where the contrast agent and the residue are not uniformly mixed, or a contrast agent There was a region where the residue did not reach the residue, and the degree of residue labeling with the contrast agent was low.
- the degree of labeling of the contrast agent was low. This is presumably because the amount of oral intestinal irrigation agent was not sufficient, so that the contrast medium was not uniformly mixed in the contents of the meal taken before and after the pretreatment.
- FIGS. 2 and 3 show three-dimensional images (endoscopic images) in the transverse colon (T) of group B and FIG. 4 in the transverse colon (T) of group C. These three-dimensional images are displayed in the transverse colon of different patients.
- a large amount of solid residue is present, and polyp lesions cannot be distinguished from these residues from the three-dimensional image, resulting in a decrease in inspection accuracy.
- it is difficult to interpret the obtained three-dimensional image it took more time for interpretation than in the case of groups A and D.
- FIG. 5 shows a three-dimensional image (endoscope-like image) in the transverse colon (T) of group D.
- a post-inspection questionnaire survey was conducted on the subject's acceptability.
- day of pretreatment the day before the examination
- defecation did not interfere with work and life.
- Night sleep on the day of pretreatment was awakened twice by defecation in case 2 of group A (however sleep was possible), and stayed up all night because of work (night shift) in case 4 of group B
- I was able to sleep without awakening.
- taste of the iodine-based water-soluble contrast agent taken as a pretreatment no complaints were observed in all cases.
- the ionic iodine-based contrast agent (trade name “Gastrografin (registered trademark)”
- Pharmaceutical generic name: sodium amidotrizoate meglumine
- the non-ionic iodine-based contrast medium used this time It is presumed that the agent is sweet without bitterness.
- no side effects or adverse events associated with the pretreatment were observed.
- Example 2 On the day before the CT colonography examination, the colon images obtained by CT imaging were evaluated in groups A to G (two people in each group) who took 300 to 450 mL of the liquid for oral administration of the present invention. In all cases, take 20 mg of mosapride citrate (trade name “Gasmotin (registered trademark) tablet”, manufactured by Dainippon Sumitomo Pharma Co., Ltd.) twice after breakfast and dinner the day before the test. They were fasted until the end of filming, and only water intake was allowed.
- mosapride citrate trade name “Gasmotin (registered trademark) tablet”, manufactured by Dainippon Sumitomo Pharma Co., Ltd.
- the specific pretreatment for each group is as follows. Of the 2 members in each group, 1 took an ionic iodine-based contrast agent (trade name “Gastrografin (registered trademark)” essence Pharmaceutical) (iodine content: 370 mg / mL) as the iodine compound, and the remaining 1
- the name was a non-ionic iodine-based contrast medium (trade name “Oipalomine (registered trademark) Note 370”, Fuji Pharmaceutical, generic name: iopamidol) (iodine content: 370 mg / mL).
- the total dose (mL) of the liquid for oral administration in each group the single dose volume (mL), the number of doses (times), the total amount of iodine compound taken (total iodine (mg)), the liquid for oral administration taken
- Table 3 summarizes the concentration of iodine compounds (iodine concentration (mg / mL)).
- Group A On the day before the examination, a total of 150 mL (contrast medium) containing 130 mL of an iodine-based water-soluble contrast agent in 130 mL of an oral intestinal cleanser (trade name “NIFREC (registered trademark) internal preparation”, (Ajinomoto Pharmaceutical Co., Ltd.)) (Concentration: 13.3% by volume) was taken in three doses after breakfast, after lunch and after dinner. The total daily dose was 450 mL (oral intestinal irrigation agent 390 mL and iodine-based water-soluble contrast agent 60 mL).
- Group B After dinner on the day before the test, a total of 400 mL of 380 mL of oral intestinal cleanser (trade name “NIFLEC (registered trademark) internal preparation”, (Ajinomoto Pharmaceutical Co., Ltd.)) and 20 mL of iodine-based water-soluble contrast agent ( Contrast medium concentration: 5% by volume).
- the total daily dose was 400 mL (oral intestinal irrigation agent 380 mL and iodine-based water-soluble contrast medium 20 mL).
- Group C On the day before the examination, a total of 200 mL (contrast medium) containing 180 mL of an iodine-based water-soluble contrast agent in 180 mL of an oral intestinal cleanser (trade name “NIFREC (registered trademark) combination internal preparation”, manufactured by Ajinomoto Pharmaceutical Co., Inc.)) Concentration: 10% by volume) was taken in two doses after breakfast and dinner. The total daily dose was 400 mL (360 mL of oral intestinal cleanser and 40 mL of iodine-based water-soluble contrast agent).
- Group D On the day before the examination, a total of 200 mL (contrast agent) containing 160 mL of an iodine-based water-soluble contrast agent and 160 mL of an oral intestinal cleanser (trade name “NIFREC (registered trademark) internal preparation”, (Ajinomoto Pharmaceutical Co., Ltd.)) Concentration: 20% by volume) was taken in two doses after breakfast and dinner. The total daily dose was 400 mL (320 mL oral cleanser and 80 mL iodine-based water-soluble contrast agent).
- Group E On the day before the examination, a total of 150 mL of oral intestinal cleanser (trade name “NIFLEC (registered trademark) combination internal preparation”, Ajinomoto Pharmaceutical Co., Ltd.) 130 mL of iodine-based water-soluble contrast medium (contrast medium) Concentration: 13.3% by volume) was taken in two doses after breakfast and dinner. The total daily dose was 300 mL (oral intestinal cleansing agent 260 mL and iodine-based water-soluble contrast medium 40 mL).
- Group F On the day before the examination, a total of 150 mL (contrast agent) containing 105 mL of an iodine-based water-soluble contrast agent in 105 mL of an oral intestinal cleanser (trade name “NIFLEC (registered trademark) internal preparation”, (Ajinomoto Pharmaceutical Co., Ltd.)) Concentration: 30% by volume) was taken in two doses after breakfast and dinner. The total daily dose was 300 mL (210 mL of oral intestinal cleanser and 90 mL of iodine-based water-soluble contrast medium).
- Group G On the day before the examination, a total of 100 mL (contrast medium) containing 70 mL of an iodine-based water-soluble contrast agent and 70 mL of an oral intestinal irrigant (trade name “NIFREC (registered trademark) internal preparation”, (Ajinomoto Pharmaceutical Co., Ltd.)) Concentration: 30% by volume) was taken in three doses after breakfast, after lunch and after dinner. The total daily dose was 300 mL (210 mL of oral intestinal cleanser and 90 mL of iodine-based water-soluble contrast medium).
- MDCT imaging was performed in the same manner as in Example 1. Three-dimensional image processing was performed on the obtained image, and two types of three-dimensional images (endoscope-like images) were obtained. , And an enema-like image obtained by synthesizing an image of a liquid residue portion and a gas image). In addition, an axial image was constructed as a two-dimensional image, the degree of residue labeling with a contrast agent and the properties of the residue were compared in each group, and the quality of intestinal pretreatment by each method was evaluated.
- Residues were evaluated by dividing the large intestine into 6 large intestine sections: cecum (C), ascending colon (A), transverse colon (T), descending colon (D), sigmoid colon (S), and rectum (R). It was.
- Tables 4 to 17 show the evaluation results of the residues in each case.
- “HU max” indicates the maximum CT value in each section
- “HU min” indicates the minimum CT value in each section.
- SC is an abbreviation for “scattered” and means scattered small residues.
- the liquid preparation for oral administration of the present invention can be suitably used for pretreatment of CT colonography, and can be used in the field of clinical tests such as colorectal screening, particularly primary screening tests such as mass screening.
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Abstract
Description
具体的には、従来のCTコロノグラフィの腸管前処置法では、腸管洗浄のために、数時間で約2L程度の大量の腸管洗浄液を服用しなければならず、被験者に大きな負担が課されている。
(1) CTコロノグラフィの消化管造影における経口投与用液剤であって、
ヨード化合物と、水溶性高分子又は塩類下剤とを含有し、
CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする経口投与用液剤、
(2) CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする前記(1)記載の経口投与用液剤、
(3) 前記ヨード化合物が、非イオン性であることを特徴とする前記(1)又は(2)記載の経口投与用液剤、
(4) 前記水溶性高分子が、ポリエチレングリコール、ポリデキストロース、デキストラン、デキストリン、ヒドロキシエチルスターチ、アラビアゴム、プルラン、ペクチン、アルブミン及びカルボキシメチルセルロースからなる群より選択される1種類以上であることを特徴とする前記(1)~(3)のいずれか一つに記載の経口投与用液剤、
(5) 浸透圧が200~440mOsm/Lであることを特徴とする前記(1)~(4)のいずれか一つに記載の経口投与用液剤、
(6) さらに、シュクロース、ソルビトール、キシリトール、エリトリトール、マンニトール、トレハロース、ラクチトール、ラクチュロース、マルチトール、パラチノース、ラフィノース及びグリセリンからなる群より選択される1種以上の糖類を含有することを特徴とする前記(1)~(5)のいずれか一つに記載の経口投与用液剤、
(7) 前記ヨード化合物の含有量が3.5~90mg/mLであることを特徴とする前記(1)~(6)のいずれか一つに記載の経口投与用液剤、
(8) さらに、ジメチルポリシロキサン及び消化管機能促進剤からなる群より選択される1種以上を含有することを特徴とする前記(1)~(7)のいずれか一つに記載の経口投与用液剤、
(9) ヨード化合物と、水溶性高分子又は塩類下剤とを含有し、
水に溶解させて、ヨード含有量が3.5~90mg/mLの水溶液として、CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする消化管造影用組成物、
(10) 水に溶解させて、ヨード含有量が3.5~90mg/mLの水溶液として、CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする前記(9)記載の消化管造影用組成物、
(11) 前記ヨード化合物が、非イオン性であることを特徴とする前記(9)又は(10)記載の消化管造影用組成物、
(12) 水に溶解したとき、浸透圧が200~440mOsm/Lとなるように電解質を含有し、
ポリエチレングリコール、ポリデキストロース、デキストラン、デキストリン、ヒドロキシエチルスターチ、アラビアゴム、プルラン、ペクチン、アルブミン及びカルボキシメチルセルロースからなる群より選択される1種類以上の水溶性高分子、又は
クエン酸マグネシウム、リン酸二水素ナトリウム、及びリン酸水素二ナトリウムからなる群より選択される1種類以上の塩類下剤を含有することを特徴とする前記(9)~(11)のいずれか一つに記載の消化管造影用組成物、
(13) さらに、ジメチルポリシロキサン及び消化管機能促進剤からなる群より選択される1種以上を含有することを特徴とする前記(9)~(12)のいずれか一つに記載の消化管造影用組成物、
(14) ヨード化合物と、水溶性高分子又は塩類下剤とを組み合わせてなり、
CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする、CTコロノグラフィのための前処置用薬剤、
(15) CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする前記(14)記載のCTコロノグラフィのための前処置用薬剤、
(16) 経口腸管洗浄剤と、ヨード造影剤とを組み合わせてなり、
CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする、CTコロノグラフィのための前処置用薬剤、
(17) CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする前記(16)記載のCTコロノグラフィのための前処置用薬剤、
を提供するものである。
また、本発明の消化管造影用組成物を用いることにより、本発明の経口投与用液剤を簡便且つ服用感の優れた製剤に調製することができる。
本発明の経口投与用液剤を用いた前処置は、経口腸管洗浄剤の服用量が従来よりも少量ですむ上に、前処置にかける日数を検査前日の1日のみとすることに成功したものであり、集団検診や人間ドックの検査システムとして多くの患者を簡便且つ短時間で検査可能なように、病院検査システムに組み込むこともできる。
CTコロノグラフィ検査の前日に、本発明の経口投与用液剤を800mL服用した場合(A群、2名)と、水溶性高分子を含まず、且つ塩類下剤を含まない(緩下作用を奏するに足る濃度の電解質を含まない)ヨード化合物含有溶液を800mL服用した場合(B群、2名)と、A群と同じ液剤を400mL(A群の半量)服用した場合(C群、3名)と、A群と同じ液剤をA群と同容量服用することに加えて、クエン酸モサプリド40mgを服用した場合(D群、1名)とにおいて、CT撮影により得られた大腸画像を評価した。
各群の具体的な前処置は、以下の通りである。なお、ヨード系水溶性造影剤は、商品名「オムニパーク(登録商標)注350(第一三共製薬製)」(一般名:イオヘキソール)、「イオベリン(登録商標)注350(大洋薬品製)」(一般名:イオヘキソール)、又は「オプチレイ(登録商標)350(コヴィディエンジャパン社製)」(一般名:イオベルソール)のいずれかを使用した。
B群:検査前日の朝7時に、スポーツ飲料(商品名:ポカリスエット、大塚製薬社製)380mLにヨード系水溶性造影剤20mLを混ぜた合計400mLを内服し、検査前日の夕方19時に、同内容の400mLを内服した。一日の服用総量は800mL(スポーツ飲料760mLとヨード系水溶性造影剤40mL)であった。
C群:検査前日の眠前21時に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))380mLにヨード系水溶性造影剤20mLを配合した合計400mLを内服した。一日の服用総量は400mL(経口腸管洗浄剤380mLとヨード系水溶性造影剤20mL)であった。
D群:検査前日の朝7時に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))380mLにヨード系水溶性造影剤20mLを配合した合計400mLを内服し、続いて少量の水でクエン酸モサプリド(商品名「ガスモチン(登録商標)錠」、大日本住友製薬社製)20mgを内服した。その後、検査前日の夕方19時に、同内容の400mLを内服し、続いて少量の水でクエン酸モサプリド20mgを内服した。一日の服用総量は800mL(経口腸管洗浄剤760mLとヨード系水溶性造影剤40mL)及びクエン酸モサプリド40mgであった。
また、B群及びC群における残渣は、固形が多かった。図2及び3にB群の横行結腸(T)内、図4にC群の横行結腸(T)内の3次元画像(内視鏡類似像)を示す。これらの3次元画像はそれぞれ異なる患者の横行結腸内を表示したものである。このように、固形残渣が多く存在しており、3次元画像からは、これらの残渣内からポリープ病変を区別することができず、検査精度が低下した。その上、得られた3次元画像の読影が困難であるため、A及びD群の場合よりも読影により多くの時間がかかった。
CTコロノグラフィ検査の前日に、本発明の経口投与用液剤を300~450mLを服用したA~G群(各群2名ずつ)において、CT撮影により得られた大腸画像を評価した。全ての群の症例において、検査前日の朝食後及び夕食後の2回、クエン酸モサプリド(商品名「ガスモチン(登録商標)錠」、大日本住友製薬社製)20mgを内服し、夕食後からMDCT撮影終了時まで絶食とし、水分摂取のみ可とした。さらに、検査前日の夕食後に、ピコスルファートナトリウム(商品名「シンラック(登録商標)錠2.5」岩城製薬社製)を2錠内服した(ピコスルファートナトリウム水和物として5mg。)。但し、C群の症例5では、クエン酸モサプリド及びピコスルファートナトリウムはいずれも内服しなかった。
B群:検査前日の夕食後に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))380mLにヨード系水溶性造影剤20mLを配合した合計400mL(造影剤濃度:5容量%)を内服した。一日の服用総量は400mL(経口腸管洗浄剤380mLとヨード系水溶性造影剤20mL)であった。
C群:検査前日に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))180mLにヨード系水溶性造影剤20mLを配合した合計200mL(造影剤濃度:10容量%)を、朝食後と夕食後の2回に分けて服用した。一日の服用総量は400mL(経口腸管洗浄剤360mLとヨード系水溶性造影剤40mL)であった。
D群:検査前日に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))160mLにヨード系水溶性造影剤40mLを配合した合計200mL(造影剤濃度:20容量%)を、朝食後と夕食後の2回に分けて服用した。一日の服用総量は400mL(経口腸管洗浄剤320mLとヨード系水溶性造影剤80mL)であった。
E群:検査前日に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))130mLにヨード系水溶性造影剤20mLを配合した合計150mL(造影剤濃度:13.3容量%)を、朝食後と夕食後の2回に分けて服用した。一日の服用総量は300mL(経口腸管洗浄剤260mLとヨード系水溶性造影剤40mL)であった。
F群:検査前日に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))105mLにヨード系水溶性造影剤45mLを配合した合計150mL(造影剤濃度:30容量%)を、朝食後と夕食後の2回に分けて服用した。一日の服用総量は300mL(経口腸管洗浄剤210mLとヨード系水溶性造影剤90mL)であった。
G群:検査前日に、経口腸管洗浄剤(商品名「ニフレック(登録商標)配合内用剤」、(味の素製薬社製))70mLにヨード系水溶性造影剤30mLを配合した合計100mL(造影剤濃度:30容量%)を、朝食後と昼食後と夕食後の3回に分けて服用した。一日の服用総量は300mL(経口腸管洗浄剤210mLとヨード系水溶性造影剤90mL)であった。
Claims (17)
- CTコロノグラフィの消化管造影における経口投与用液剤であって、
ヨード化合物と、水溶性高分子又は塩類下剤とを含有し、
CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする経口投与用液剤。 - CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする請求項1記載の経口投与用液剤。
- 前記ヨード化合物が、非イオン性であることを特徴とする請求項1又は2記載の経口投与用液剤。
- 前記水溶性高分子が、ポリエチレングリコール、ポリデキストロース、デキストラン、デキストリン、ヒドロキシエチルスターチ、アラビアゴム、プルラン、ペクチン、アルブミン及びカルボキシメチルセルロースからなる群より選択される1種類以上であることを特徴とする請求項1~3のいずれか一項に記載の経口投与用液剤。
- 浸透圧が200~440mOsm/Lであることを特徴とする請求項1~4のいずれか一項に記載の経口投与用液剤。
- さらに、シュクロース、ソルビトール、キシリトール、エリトリトール、マンニトール、トレハロース、ラクチトール、ラクチュロース、マルチトール、パラチノース、ラフィノース及びグリセリンからなる群より選択される1種以上の糖類を含有することを特徴とする請求項1~5のいずれか一項に記載の経口投与用液剤。
- 前記ヨード化合物の含有量が3.5~90mg/mLであることを特徴とする請求項1~6のいずれか一項に記載の経口投与用液剤。
- さらに、ジメチルポリシロキサン及び消化管機能促進剤からなる群より選択される1種以上を含有することを特徴とする請求項1~7のいずれか一項に記載の経口投与用液剤。
- ヨード化合物と、水溶性高分子又は塩類下剤とを含有し、
水に溶解させて、ヨード含有量が3.5~90mg/mLの水溶液として、CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする消化管造影用組成物。 - 水に溶解させて、ヨード含有量が3.5~90mg/mLの水溶液として、CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする請求項9記載の消化管造影用組成物。
- 前記ヨード化合物が、非イオン性であることを特徴とする請求項9又は10記載の消化管造影用組成物。
- 水に溶解したとき、浸透圧が200~440mOsm/Lとなるように電解質を含有し、
ポリエチレングリコール、ポリデキストロース、デキストラン、デキストリン、ヒドロキシエチルスターチ、アラビアゴム、プルラン、ペクチン、アルブミン及びカルボキシメチルセルロースからなる群より選択される1種類以上の水溶性高分子、又は
クエン酸マグネシウム、リン酸二水素ナトリウム、及びリン酸水素二ナトリウムからなる群より選択される1種類以上の塩類下剤を含有することを特徴とする請求項9~11のいずれか一項に記載の消化管造影用組成物。 - さらに、ジメチルポリシロキサン及び消化管機能促進剤からなる群より選択される1種以上を含有することを特徴とする請求項9~12のいずれか一項に記載の消化管造影用組成物。
- ヨード化合物と、水溶性高分子又は塩類下剤とを組み合わせてなり、
CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする、CTコロノグラフィのための前処置用薬剤。 - CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする請求項14記載のCTコロノグラフィのための前処置用薬剤。
- 経口腸管洗浄剤と、ヨード造影剤とを組み合わせてなり、
CTコロノグラフィの前日に、300~1200mLを1回で又は複数回に分けて服用されることを特徴とする、CTコロノグラフィのための前処置用薬剤。 - CTコロノグラフィの前日に、600~1200mLを1回で又は複数回に分けて服用されることを特徴とする請求項16記載のCTコロノグラフィのための前処置用薬剤。
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- 2011-10-07 JP JP2012537776A patent/JP5910501B2/ja active Active
- 2011-10-07 KR KR1020137010935A patent/KR20130100323A/ko not_active Application Discontinuation
- 2011-10-07 CN CN201180058526XA patent/CN103237563A/zh active Pending
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- 2011-10-07 WO PCT/JP2011/073236 patent/WO2012046847A1/ja active Application Filing
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2013
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2016
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Also Published As
Publication number | Publication date |
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JP5910501B2 (ja) | 2016-04-27 |
CN103237563A (zh) | 2013-08-07 |
EP2626085A4 (en) | 2016-08-03 |
KR20130100323A (ko) | 2013-09-10 |
JP2016117777A (ja) | 2016-06-30 |
JPWO2012046847A1 (ja) | 2014-02-24 |
EP2626085A1 (en) | 2013-08-14 |
US20130295018A1 (en) | 2013-11-07 |
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