WO1995011042A1 - Composition administree par voie nasale et preparation contenant celle-ci - Google Patents
Composition administree par voie nasale et preparation contenant celle-ci Download PDFInfo
- Publication number
- WO1995011042A1 WO1995011042A1 PCT/JP1994/001762 JP9401762W WO9511042A1 WO 1995011042 A1 WO1995011042 A1 WO 1995011042A1 JP 9401762 W JP9401762 W JP 9401762W WO 9511042 A1 WO9511042 A1 WO 9511042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nasal
- composition
- alcohol
- drug
- propylene glycol
- Prior art date
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Classifications
-
- 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
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
-
- 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
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0043—Nose
Definitions
- the present invention relates to a nasal composition (nasal administration composition) and a nasal preparation (nasal administration formulation), and more particularly, has very low irritation to the nasal mucosa and absorbs pharmacologically active substances.
- Bioactive peptides or proteins are generally hydrophilic and have a low oil-water partitioning power s, and are also decomposed by enzymes in the gastrointestinal tract or on the walls of the gastrointestinal tract, making absorption from the gastrointestinal tract extremely difficult. is there.
- nasal administration using nasal preparations has attracted attention as an alternative to injection.
- the nasal mucosa is rich in capillaries, has better drug absorption compared to vaginal mucosa, etc.
- drugs directly absorbed into the capillaries can avoid the first-pass effect in the liver, etc.
- JP-A-61-33126 discloses a fusidic acid derivative
- JP-A-11-501550 describes a phospholipid
- JP-A-63-243033 describes an alkyl glucoside
- sucrose fatty acid ester is used, and in Japanese Patent Application Laid-Open No.
- a surfactant is used so as to increase the absorption rate of drugs after nasal administration and to reduce uneven absorption.
- these compositions or absorption enhancers have serious side effects such as irritation of the nasal mucosa and have not yet been put to practical use.
- some of the preservatives and preservatives often used in conventional nasal preparations have surface-active properties, and local irritation due to them is beginning to be viewed as a problem (J. pharm. Pharmacol, 1990). , 42, 145-151).
- nasal compositions and nasal preparations having lower irritation and higher drug absorption are strongly desired.
- alcohols are used as a component of a composition for nasal administration as described in, for example, JP-A-61-267528, JP-A-1-160916, JP-A-63-258821.
- propylene glycol is mildly irritating, and there are precedents for its use as a base for oral preparations or injections, and its safety has been confirmed. Used.
- composition for nasal administration for example, as described in Japanese Patent Application Laid-Open No. Sho 62-51617 and Japanese Patent Application Laid-Open No. It has been shown to provide moisturizing properties to the keratin and increase the skin permeability of the drug, but it also has an absorption-promoting effect on the non-keratinous nasal mucosa, which is a barrier to drug absorption. It is not easy to guess, and there is also the problem of primary irritation to the skin when propylene glycol is applied to the skin ("Skin", Vol. 26, 119-11-127, Showa 5) 9 / Oct) Hypoallergenicity at the time of mucosal administration cannot be inferred.
- ethanol as described in, for example, JP-A-63-139655.
- these drugs are limited to ergot alkaloids, which are also limited to use with ultrasonic aerosol devices. Also where the content of ethanol remaining s problems force of irritation to the nasal mucosa in 1 0% and to have force the ethanol-containing weight the most preferred solvent.
- Japanese Patent Application Laid-Open No. 61-26758528 exemplifies benzyl alcohol and ethanol as absorption promoters.
- the drug is limited to calcitonin, and a particularly preferable use ratio of ethanol is 1 to 10% (w / v).
- the present invention has been made in view of the above facts and circumstances, solves the drawbacks of conventional nasal administration compositions or nasal preparations, and has a hypoallergenic property with a specific base formulation.
- Another object of the present invention is to provide a new nasal composition capable of realizing good drug absorption and a nasal preparation containing or applying the same. Disclosure of the invention
- the present inventors have conducted intensive experiments and studies on various compositions in order to solve the above-mentioned problems, and as a result, surprisingly, water and alcohols have been converted to certain specific compounds depending on the pharmacologically active ingredient.
- the inventors have found that the above-mentioned drawbacks can be overcome by blending in the proportions, and have completed the present invention.
- the present invention provides a nasal composition comprising a pharmacologically active substance, water and an alcohol, wherein the content of the alcohol is 10 to 70% by volume of the total amount of the composition. It is intended to provide a nasal preparation containing the same or a nasal preparation obtained by applying the same.
- any alcohol can be used, but a lower alcohol having 1 to 4 carbon atoms, a lower alcohol diol having 2 to 5 carbon atoms or a lower alcohol having 3 to 6 carbon atoms can be used. Desirably, it is Altritriol. Specific examples of these alcohols include methanol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, ethylene glycol (1,3-ethanediol), and propylene glycol (1,2-propane).
- Diol 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 1,5-pentanediol ⁇ glycerin, etc. Can be.
- the alcohol can be used alone or as a mixture of two or more.
- the alcohol is 10 to 70% by volume, preferably 15 to 50% by volume based on the total amount of the composition (100% by volume). %, More preferably 15 to 30% by volume.
- the preferable mixing ratio is appropriately determined within the above-mentioned mixing ratio depending on the kind and combination of the alcohol used.
- the upper limit of the mixing ratio of alcohols is determined as appropriate depending on the type of alcohol used, the combination, and the like. In this case, the effect, cost, side effects (particularly irritation), etc. are also taken into consideration. Needless to say, it is necessary to make a decision.
- propylene glycol is particularly preferred because it has a track record of use as a pharmaceutical additive. In the case of this propylene glycol (1,2-butanepandiol), its preferable compounding ratio is 15 to 30% by volume of the total amount of the composition.
- the water used in the present invention may be any of purified water, physiological saline, and buffers used for adjusting pH and the like. These waters are mixed at a ratio of 1 to 90% by volume, preferably 20 to 87% by volume, and more preferably 70 to 85% by volume, based on the total amount of the composition (100% by volume).
- the preferred blending ratio is appropriately determined within the above-mentioned blending ratio depending on the kind of the alcohol described above or a combination thereof.
- any kind of pharmacologically active ingredient that can be absorbed from the nasal mucosa can be used.
- a drug having a large first-pass effect in the liver water-soluble power Drugs that do not have sufficient absorption by oral administration, degradability in the gastrointestinal tract> 'significant drug power ⁇
- bioactive peptides, bioactive proteins, their possible salts and derivatives, these Isomers and optical isomers can be used, and two or more of these can be used as a mixture.
- pharmacologically active substances include insulin, calcitonin, calcitonin-related gene peptide, vasobretsin, desmoblescin, protirelin (TRH), adrenocorticotropic hormone (ACTH), luteinizing hormone-releasing factor (LH-RH), and growth hormone.
- GSH nerve growth factor
- NNF nerve growth factor
- FSH follicle stimulating hormone
- LH Luteinizing hormone
- prolactin serum gonadotropin
- HCG Pituitary hormone
- Somatostatin Somatomedin
- Oxytocin Glucagon
- Gastrin Secretin
- Endorphin Enkephalin
- Endothelin Cholecystokinin
- Neurotensin Interphenin, Interleukin, Transpurin, Erythropoietin , Superoxide desmutase (SOD), filgrastim (G-CSF), renin, bathoactive 'intestinal' polypeptide (VIP), muramyl dipeptide, corticotropin, progastrin, atrial sodium diuretic peptide (h — ANP), estrogens,
- calcitonin a calcitonin-related gene peptide (CGRP), which is a bioactive peptide having a relatively small molecular weight, vasopressin, desmoblescin, protirelin (TRH), adrenocorticotropic hormone (ACTH), and luteinizing hormone-releasing hormone are preferred.
- CGRP calcitonin-related gene peptide
- TRH vasopressin
- TRH protirelin
- ACTH adrenocorticotropic hormone
- luteinizing hormone-releasing hormone are preferred.
- Factor LH-RH
- growth hormone-releasing hormone GSH
- growth hormone oxytocin
- muramyl dipeptide their possible salts and derivatives, isomers and optical isomers, and mixtures of two or more of these Can be used.
- brothyrelin which is a bioactive peptide having a smaller molecular weight, its possible salts and derivatives, isomers and optical isomers, and a mixture of two or more of these can be used.
- TRH brothyrelin
- the nasal composition according to the present invention and a nasal preparation containing or applying the same may be used as an aqueous solution or as a thickening agent or a gelling agent for improving drug retention on the nasal mucosa.
- a hydrophilic polymer or an amphiphilic polymer is further added and used in a dropping container, a spray container, a nasal aerosol abricator, or the like.
- the thickener or gelling agent include known polymer compounds such as polysaccharide, gelatin, polyvinyl alcohol and derivatives thereof, carboxyvinyl polymer, polyethylene glycol, and polyvinyl methyl ether-maleic anhydride copolymer.
- nasally administered composition of the present invention may use ribosomes, microspheres, microcapsules, nanoparticle, or the like, depending on the chemical properties of the drug and the necessity for formulation. These preparations can be formulated and manufactured by mixing, dissolving, suspending, emulsifying or reacting in any appropriate order according to known means.
- a bactericide In any of the nasal preparations, if necessary, a bactericide, an antiseptic, an emulsifier, a solubilizer, a stabilizing agent, an ultraviolet absorber, which is generally used as an additive in nasal or external solutions A predetermined amount of an antioxidant and the like can be appropriately blended.
- FIG. 1 is a graph showing the time course of plasma concentrations of TRH-T when TRH-T was used as a drug and rats were used as experimental animals.
- FIG. 2 is a graph showing the progress of the blood concentration of TRH-T when TRH-T was used as a drug and rats were used as experimental animals.
- FIG. 3 is a diagram showing the results of a degradation enzyme inhibitory evaluation test performed using an enzyme solution obtained from the nasal mucosa of the egret. BEST MODE FOR CARRYING OUT THE INVENTION
- TRH-T protirelin tartrate
- the reagents of Examples 1 to 3 and Comparative Examples 1 to 5 were prepared as follows. In Examples 1 to 3 and Comparative Examples 1 to 3, 31 Z of the following drugs were administered into the right nasal cavity of rats, respectively. In Comparative Example 4, the following reagents were intravenously injected into rats, and in Comparative Example 5, the following reagents were injected intramuscularly in rats. The animals were administered 150 ⁇ lZ. Then, blood was collected 5, 10, 30 and 60 minutes after the administration, and the plasma concentration of TRH-T was measured by HPLC.
- Example 2 TRH-T5 Omg was dissolved in a solution of water and propylene glycol mixed at a ratio of 8: 2 (volume ratio) to obtain a total volume of 1 ml of reagent.
- Example 3 50 mg of TRH-T was dissolved in a solution obtained by mixing water and propylene glycol at a ratio of 7: 3 (volume ratio) to obtain a total volume of 1 ml of a reagent.
- Comparative Example 1 TRH-T50mg, water and propylene glycol 9.5:
- Comparative Example 3 50 mg of TRH-T was dissolved in physiological saline to obtain a reagent having a total volume of 1 ml.
- Comparative Example 4 TRH-T 1 Omg was dissolved in physiological saline to obtain a reagent having a total volume of 1 ml.
- Example 1 the TRH-T plasma concentration achieved in Example 1 was lower than the TRH-T plasma concentration achieved in Comparative Example 3 using a simple composition, ie, saline. Quite high. Further, in Examples 2 and 3, the absorption rate was increased, and the TRH-T plasma concentration was clearly higher at a faster stage than in all Comparative Examples except Comparative Example 4 (intravenous administration). According to the results, it is clear that the addition of alcohol to the water in the reagent increases the mucosal absorbability of the drug, and that the effect of promoting the drug absorption depends on the amount of alcohol added. I understand.
- Example 1 The bioavailability (AUC) of Example 1 (addition of 11% by volume of propylene glycol) showed almost the same bioavailability (AUC) as that of Comparative Example 5 (intramuscular administration) due to the drug absorption promoting effect of the addition of alcohol. (Addition of 20% by volume of propylene glycol) approaches the maximum absorption promotion effect, and Example 3 (addition of 30% by volume of propylene glycol) maintains a high utilization rate.
- the bioavailability achieved in Examples 2 and 3 was about 50%% relative to the bioavailability achieved in Comparative Example 4 (intravenous administration). According to this, it can be seen that a sufficient drug effect can be obtained.
- Example 4 While the required head rat was anesthetized with urethane as in the test of Example 1, the reagents of Example 4 and Comparative Examples 6 to 7 were prepared as follows.
- Example 4 the following reagents were administered into the right nasal cavity of rats at 20 / X 1Z.
- Comparative Example 6 the following reagents were administered intravenously to the rat, and in Comparative Example 7, the following reagents were administered subcutaneously to the rat at a dose of 1 ⁇ Z each. Then, 3, 5, 10, 15, 20, 30, 45, 60, 90, 120 and
- Comparative Example 6 20 mg of TRH-T was dissolved in physiological saline to obtain a reagent having a total volume of 1 ml.
- Comparative Example 7 20 mg of TRH-T was dissolved in physiological saline to obtain a reagent having a total volume of 1 ml.
- FIG. 2 shows the results obtained from the above test.
- the unit of blood concentration in the figure is "ngZml”.
- Example 4 the blood concentration of TRH achieved in Example 4 was higher than the blood concentration of TRH achieved in Comparative Examples 6 and 7 after 60 minutes after administration. are doing. According to this result, the drug in the nasal mucosa was absorbed by using the composition of the present invention obtained by adding alcohol to the water in the reagent. It is clear that not only is the absorption of the drug promoted, but also the effect of sustained release of the drug is achieved. As compared with subcutaneous administration (Comparative Example 7), which is considered to have a relatively sustained release effect, in Example 4 according to the present invention, the blood concentration was maintained over a long period of time s Since there is no significant difference in speed, the sustained release effect achieved by the present invention is very excellent.
- the nasal septum excised as described above was fixed in tissue, dried at the critical point, gold-deposited, and the morphology of the nasal mucosa surface was observed by SEM.
- the degree of damage to the nasal mucosal surface was determined as shown in Table 2, and the average value was used as the nasal mucosal irritation index of the composition.
- Example 5 A solution in which water and propylene glycol are mixed at a ratio of 8.9: 1.1 (by volume).
- Example 6 A solution obtained by mixing water and propylene glycol at a ratio of 8: 2 (volume ratio). Comparative Example 8: Physiological saline.
- Comparative Example 9 Polyoxoxylene lauryl ether (about 9 units of oxixylene, hereinafter abbreviated as “BL-9”) was dissolved in physiological saline at a ratio of 0.5% (w / V), and the total amount was dissolved. 1 ml of reagent was obtained.
- BL-9 Polyoxoxylene lauryl ether
- Comparative Example 10 General over-the-counter drug A for nasal administration (systemic) [Spurecure (registered trademark): manufactured by Hextor Co., Ltd.], a systemically active preparation.
- Comparative Example 11 General over-the-counter drug B for nasal administration (topical) [Pripina (registered trademark): Ciba Geigy One Co., Ltd.], topically active preparation.
- Table 3 shows the results obtained from the above tests. As is clear from Table 3, for example, the reagents of Example 5 and Example 6 showed irritation equivalent to or less than the irritation of the marketed nasal drops of Comparative Example 10 and Comparative Example 11 and Was. As can be seen from the results, it is clear that the nasal composition according to the present invention has low nasal mucosal irritation.
- the nasal mucosa of the heron was homogenized in physiological saline, and the supernatant obtained by centrifugation was used as an enzyme solution.
- the enzyme solution the reagents of Examples 7 to 9 and Comparative Examples 12 to 13 were prepared as follows, and the amount of the drug remaining in each reagent was determined while incubating in a warm water bath at a temperature of 37 ° C. Measured over time by the HPLC method.
- Example 7 TRH-T20iig was dissolved in a mixed solution of 1.30 ml of enzyme solution, 0.21 ml of propylene glycol and 0.49 ml of physiological saline (propylene glycol content 10%, volume ratio).
- Example 8 20 wg of TRH-T was dissolved in a solution (1.3% of propylene glycol, 0.30 ml of physiological saline) mixed with 1.30 ml of enzyme solution (propylene glycol content 20%, volume ratio).
- Example 9 A solution obtained by mixing 20 g of TRH-T with 1.30 ml of an enzyme solution, 0.60 ml of propylene glycol and 0.10 ml of physiological saline (propylene glycol content 30%, volume ratio) was dissolved.
- Comparative Example 12 TRH-T20 "g was dissolved in a mixed solution of 1.30 ml of enzyme solution, 0.10 ml of propylene glycol and 0.60 ml of physiological saline (propylene glycol content 5%, volume ratio). .
- Comparative Example 13 TRH-T20wg was dissolved in a solution obtained by mixing 1.30 ml of the enzyme solution and 0.70 ml of physiological saline.
- Figure 3 shows the results obtained from the above test. As shown in the figure, the enzyme inhibitory activity >> was observed for the reagent having a propylene glycol content of 10% by volume or more, and almost complete enzyme inhibitory activity was observed for the reagent having a propylene glycol content of 20% by volume or more.
- the nasal composition of the present invention has an inhibitory effect on the peptide-degrading enzyme in the nasal mucosa, and this is one mechanism that contributes to the absorption promoting effect of the present invention.
- the enzyme is a degradative enzyme inhibitory agent, and indicates that the composition of the present invention is particularly suitable for peptide administration.
- the nasal composition of the present invention containing water and alcohol at a specific ratio and containing a pharmacologically active substance
- the nasal formulation of the present invention containing the composition are provided as follows. It is clear that the use achieves good drug absorption.
- the nasal composition of the present invention is a conventional nasal absorption promoting composition (particularly one having a surface active action, Unlike that of Comparative Example 7), in which the structure of the mucosal epithelium is partially changed or destroyed to promote permeation, irritation and toxicity to tissues are remarkably low.
- the nasal composition of the present invention has a very high safety profile, and is capable of maintaining a drug blood concentration for a long period of time while rapidly absorbing a drug.
- a nasal preparation which can be expected to have sufficient drug efficacy can be provided.
- nasal preparations can be easily administered by the patient or caregiver without relying on a physician.
- X Nasal administration is conventionally difficult using the nasal preparations of the present invention. Not only a single dose of the drug but also frequent doses can greatly reduce patient pain and physician effort. From these points, the present invention is particularly useful in the pharmaceutical industry.
- water and alcohols used in the present invention are extremely easy to mix, and have excellent stability. That is, there is no need to add a solubilizer or emulsify the mixture with the absorption enhancer such as the conventional absorption enhancer for nasal administration. This indicates that the nasal composition of the present invention is excellent in production and management, and in that respect, it is also useful in industry.
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Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69430132T DE69430132T2 (de) | 1993-10-21 | 1994-10-19 | Pernasale zusammensetzung und diese enthaltende pernasale zubereitung |
AT94930340T ATE214289T1 (de) | 1993-10-21 | 1994-10-19 | Pernasale zusammensetzung und diese enthaltende pernasale zubereitung |
KR1019960702035A KR100217258B1 (ko) | 1993-10-21 | 1994-10-19 | 경비조성물 |
DK94930340T DK0724885T3 (da) | 1993-10-21 | 1994-10-19 | Pernasal sammensætning og pernasalt præparat indeholdende dette |
CA002174324A CA2174324A1 (en) | 1993-10-21 | 1994-10-19 | Pernasal composition and pernasal preparation containing the same |
AU79492/94A AU681452B2 (en) | 1993-10-21 | 1994-10-19 | Pernasal composition and pernasal preparation containing thesame |
EP94930340A EP0724885B1 (en) | 1993-10-21 | 1994-10-19 | Pernasal composition and pernasal preparation containing the same |
US08/628,736 US5789375A (en) | 1993-10-21 | 1994-10-19 | Pernasal composition and pernasal preparation containing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5/287784 | 1993-10-21 | ||
JP28778493 | 1993-10-21 |
Publications (1)
Publication Number | Publication Date |
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WO1995011042A1 true WO1995011042A1 (fr) | 1995-04-27 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1994/001762 WO1995011042A1 (fr) | 1993-10-21 | 1994-10-19 | Composition administree par voie nasale et preparation contenant celle-ci |
Country Status (11)
Country | Link |
---|---|
US (1) | US5789375A (ja) |
EP (1) | EP0724885B1 (ja) |
KR (1) | KR100217258B1 (ja) |
CN (1) | CN1098708C (ja) |
AT (1) | ATE214289T1 (ja) |
AU (1) | AU681452B2 (ja) |
CA (1) | CA2174324A1 (ja) |
DE (1) | DE69430132T2 (ja) |
DK (1) | DK0724885T3 (ja) |
ES (1) | ES2171469T3 (ja) |
WO (1) | WO1995011042A1 (ja) |
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US5112804A (en) * | 1987-04-01 | 1992-05-12 | Temple University Of The Commonwealth System Of Higher Education | Pharmaceutical composition and method of intranasal administration |
ATE164080T1 (de) * | 1990-05-10 | 1998-04-15 | Bechgaard Int Res | Pharmazeutische zubereitung enthaltend n- glykofurole und n-äthylenglykole |
US5397771A (en) * | 1990-05-10 | 1995-03-14 | Bechgaard International Research And Development A/S | Pharmaceutical preparation |
-
1994
- 1994-10-19 WO PCT/JP1994/001762 patent/WO1995011042A1/ja active IP Right Grant
- 1994-10-19 DK DK94930340T patent/DK0724885T3/da active
- 1994-10-19 CN CN94193843A patent/CN1098708C/zh not_active Expired - Fee Related
- 1994-10-19 EP EP94930340A patent/EP0724885B1/en not_active Expired - Lifetime
- 1994-10-19 KR KR1019960702035A patent/KR100217258B1/ko not_active IP Right Cessation
- 1994-10-19 CA CA002174324A patent/CA2174324A1/en not_active Abandoned
- 1994-10-19 US US08/628,736 patent/US5789375A/en not_active Expired - Fee Related
- 1994-10-19 AU AU79492/94A patent/AU681452B2/en not_active Ceased
- 1994-10-19 DE DE69430132T patent/DE69430132T2/de not_active Expired - Fee Related
- 1994-10-19 ES ES94930340T patent/ES2171469T3/es not_active Expired - Lifetime
- 1994-10-19 AT AT94930340T patent/ATE214289T1/de not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267528A (ja) * | 1984-11-26 | 1986-11-27 | Yamanouchi Pharmaceut Co Ltd | 吸収促進剤を含有するカルシトニン経鼻剤 |
JPH01160916A (ja) * | 1987-12-18 | 1989-06-23 | Tanabe Seiyaku Co Ltd | ドーパミン経鼻投与製剤 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970032844A (ko) * | 1995-12-29 | 1997-07-22 | 김준웅 | 지속성 경비투여제제 |
Also Published As
Publication number | Publication date |
---|---|
ES2171469T3 (es) | 2002-09-16 |
CN1133565A (zh) | 1996-10-16 |
AU7949294A (en) | 1995-05-08 |
KR100217258B1 (ko) | 1999-09-01 |
DE69430132T2 (de) | 2002-08-29 |
EP0724885A4 (en) | 1997-06-25 |
ATE214289T1 (de) | 2002-03-15 |
AU681452B2 (en) | 1997-08-28 |
US5789375A (en) | 1998-08-04 |
CA2174324A1 (en) | 1995-04-27 |
EP0724885A1 (en) | 1996-08-07 |
CN1098708C (zh) | 2003-01-15 |
DE69430132D1 (de) | 2002-04-18 |
EP0724885B1 (en) | 2002-03-13 |
DK0724885T3 (da) | 2002-05-21 |
KR960705585A (ko) | 1996-11-08 |
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