WO2013005834A1 - 高純度epaを含有する抗肥満剤 - Google Patents
高純度epaを含有する抗肥満剤 Download PDFInfo
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- WO2013005834A1 WO2013005834A1 PCT/JP2012/067337 JP2012067337W WO2013005834A1 WO 2013005834 A1 WO2013005834 A1 WO 2013005834A1 JP 2012067337 W JP2012067337 W JP 2012067337W WO 2013005834 A1 WO2013005834 A1 WO 2013005834A1
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- obesity
- weight gain
- epa
- active ingredient
- decrease
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
- A61K31/22—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin
- A61K31/23—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin of acids having a carboxyl group bound to a chain of seven or more carbon atoms
- A61K31/232—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin of acids having a carboxyl group bound to a chain of seven or more carbon atoms having three or more double bonds, e.g. etretinate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/16—Amides, e.g. hydroxamic acids
- A61K31/165—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide
- A61K31/167—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide having the nitrogen of a carboxamide group directly attached to the aromatic ring, e.g. lidocaine, paracetamol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/20—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids
- A61K31/202—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids having three or more double bonds, e.g. linolenic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/42—Oxazoles
- A61K31/421—1,3-Oxazoles, e.g. pemoline, trimethadione
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/04—Anorexiants; Antiobesity agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
Definitions
- the present invention relates to an agent for suppressing (decreasing) weight gain in obesity and an anti-obesity agent containing icosapentaic acid.
- Obesity caused by excessive intake of fat has become a major social concern due to an increase in the number of patients and health risks.
- Obesity refers to a state in which adipose tissue has accumulated excessively.
- the body-mass index (abbreviated as “BMI” hereinafter) is 25 or more.
- related health disorders at least one of 10 items including type 2 diabetes, dyslipidemia and hypertension
- a condition that is predicted to be combined and requires medical weight loss and upper body with a BMI of 25 or higher Visceral fat-type obesity suspected of being obese and definitively diagnosed by umbilical CT examination is defined as obesity (see Non-Patent Document 2).
- Weight gain caused by such a cause refers to dyslipidemia (hypercholesterolemia or hypertriglyceridemia (hereinafter abbreviated as “hyperTGemia”). The same applies hereinafter. ), A risk factor for the development of metabolic syndrome that is observed as hypertension, arteriosclerosis, diabetes, obesity, etc. In order to prevent metabolic syndrome, it is important to first prevent weight gain (obesity). Metabolic syndrome induces vascular complications such as peripheral blood circulation disorder, ischemic heart disease and cerebral infarction, and significantly impairs life quality of life (see Non-Patent Document 3).
- Essential obesity refers to obesity in which surplus energy sources accumulate as fat when calorie intake exceeds calorie consumption, and more than 90% of obesity is said to be of this type.
- causes include lack of exercise, incorrect feeding pattern, stress, lipid metabolism abnormalities (disorders), excessive secretion of insulin, increased adipocytes, lack of brown adipocytes, and the like.
- symptomatic obesity develops due to other diseases such as endocrine obesity, hereditary obesity, hypothalamic obesity, and drug-induced obesity (see Non-Patent Document 4).
- subcutaneous fat obesity peripheral obesity
- visceral fat obesity central obesity
- Subcutaneous fat is fat that is directly under the skin, and the number of fat cells tends to increase.
- visceral fat is fat that adheres to the mesentery in the abdominal cavity, and fat cells tend to accumulate fat in each cell. It is said that when visceral fat increases, metabolic disorders are likely to occur, and diseases such as diabetes, hypertension, arteriosclerosis, hyperlipidemia, and fatty liver are likely to occur.
- Fatty liver is a state in which fat (mainly neutral fat) is excessively accumulated in the liver, particularly hepatocytes, and medically, fat vacuoles are found in 30% or more of hepatocytes, Alternatively, it means a state where 10% by mass or more of fat is contained in hepatocytes, or a state where lipid droplets are observed in 1/3 or more of hepatocytes. It also means a state that is considered to be one of the causes of the onset, accompanied by increased lipid formation in the liver (Non-Patent Documents 5 and 6).
- causes of fatty liver include overnutrition, obesity, excessive intake of alcohol, and diabetes. It may also be caused by other endocrine or metabolic diseases, certain drug intake, and rarely excessive nutritional decline. More specifically, the causes of fatty liver include (1) excessive intake of dietary fat or carbohydrate, (2) increased lipid formation in the liver, (3) increased neutral fat formation in the liver (4 It is said that the disorder of fatty acid and neutral lipolysis in the liver, (5) increase in the inflow of free fatty acid into the liver, and (6) impaired secretion of lipoprotein from the liver into the blood, etc. (Non-Patent Documents 5 and 6).
- Non-Patent Document 7 There are many reports on the effects of ⁇ 3 fatty acids on obesity (eg, Non-Patent Document 7). However, there is still room for discussion.
- Brifun et al. Fed mice with a high fat diet, administered an ⁇ 3 fatty acid composition (a mixture of icosapentoic acid (hereinafter abbreviated as “EPA”) and docosahexaenoic acid (hereinafter abbreviated as “DHA”)), An experimental report on the suppression of weight gain has been made. However, they have not sufficiently identified active ingredients, and argue that DHA is an active body that suppresses weight gain (see Patent Document 1). Sato et al.
- EPA icosapentoic acid
- DHA docosahexaenoic acid
- EPA-E high purity icosapentate acid ester
- Non-Patent Document 9, 10 or 11 There are reports that hamsters are good laboratory animals and essentially correspond to phenomena seen in humans in examining the regulation and mechanism of effects on dietary lipid-related parameters (weight, plasma lipid markers). Yes (see Non-Patent Document 9, 10 or 11).
- CETP human plasma cholesterol ester transfer protein
- HDL-C value high density lipoprotein cholesterol level
- An object of the present invention is to provide an EPA-containing weight gain inhibitor (decrease) or an anti-obesity agent for obesity, in particular, obesity that is not preferably observed, such as increased liver lipid formation or mild fatty liver.
- CETP has more humans than mice and rats that are commonly used in lipid metabolism experiments but lack CETP.
- EPA-E has an extremely potent body weight gain-suppressing (decreasing) effect, as well as an inhibitory effect on CETP activity and low-density lipoprotein cholesterol (hereinafter abbreviated as “LDL-C”). It was found to show.
- DHA-E docosahexaenoic acid ethyl ester
- Weight gain inhibitor (decrease) or anti-obesity agent containing one as an active ingredient is “a group consisting of obesity with BMI of 25 or more, with increased hepatic lipid formation or mild fatty liver and obesity without hepatic lipid formation or fatty liver. At least one obesity selected from.
- the body weight gain inhibitor (decrease) or anti-obesity according to any one of (1) to (4) which is substantially free of DHA and pharmaceutically acceptable salts, esters and derivatives thereof. Agent.
- a second active ingredient at least selected from the group consisting of EPA and pharmaceutically acceptable salts, esters and derivatives thereof for use in combination with at least one compound selected from the group consisting of CETP inhibitors Weight gain inhibitor (decrease) or anti-obesity agent containing one as an active ingredient.
- a subject of obesity particularly obesity subjects with increased hepatic lipid formation or fatty liver that is mildly unfavorable, preferably from the group consisting of EPA and pharmaceutically acceptable salts, esters and derivatives thereof.
- a method for the prevention, improvement or treatment of weight gain suppression or weight loss or obesity comprising administering a weight gain suppression (reduction) agent or anti-obesity agent containing at least one selected as an active ingredient.
- a weight gain suppression (reduction) agent or anti-obesity agent containing at least one selected as an active ingredient.
- the first active ingredient is at least one selected from the group consisting of EPA and pharmaceutically acceptable salts, esters and derivatives thereof
- the second active ingredient is selected from the group consisting of CETP inhibitors
- the CETP inhibitor is darcetrapib or anacetrapib.
- Functional food, health food, food for specified health use, enteral nutrition food, diet food, or the like for the prevention, improvement or treatment of weight gain suppression or weight loss or obesity comprising at least one selected from Additives to food supplements or other functional foods, health foods, foods for specified health use, enteral nutrition foods, diet foods or food supplements.
- EPA and its pharmaceutically acceptable salts, esters and derivatives thereof at least one selected from the group consisting of increased hepatic lipid formation or suppression of weight gain against obesity with mild fatty liver, preferably not observed ( Reducing) agents or anti-obesity agents and methods of use thereof.
- an agent for suppressing (decreasing) weight gain or an anti-obesity agent that is very effective is provided. Specifically, it is expected that weight gain or obesity is suppressed by ingesting the EPA of the present invention even during continuous intake of a high fat diet.
- the EPA of the present invention can prevent lifestyle-related diseases (for example, dyslipidemia, etc.) that have a high risk caused by weight gain or obesity, and prevent / improve diseases / symptoms involving fat accumulation. It is also expected.
- lifestyle-related diseases for example, dyslipidemia, etc.
- the EPA of the present invention comprises blood total cholesterol (hereinafter abbreviated as “TC”), triglyceride (hereinafter abbreviated as “TG”), LDL-C, high-density lipoprotein cholesterol (hereinafter referred to as “TC”).
- TC blood total cholesterol
- TG triglyceride
- LDL-C high-density lipoprotein cholesterol
- HDL-C plasma lipid markers
- non-HDL-C suppression of increase in CETP activity, etc.
- FIG. 1 is a graph relating to the rate of weight gain when a hamster is fed a high fat diet (HF), a high fat diet + EPA-E (HF + EPA), a high fat diet + DHA-E (HF + DHA), or a standard diet (Standard).
- FIG. 2 shows that when a hamster is fed a high fat diet (HF), a high fat diet + EPA-E (HF + EPA), a high fat diet + DHA-E (HF + DHA) or a standard diet (Standard) It is a bar graph which shows the average value of 4-8 animals regarding testicular fat amount.
- FIG. 1 is a graph relating to the rate of weight gain when a hamster is fed a high fat diet (HF), a high fat diet + EPA-E (HF + EPA), a high fat diet + DHA-E (HF + DHA), or a standard diet (Standard).
- HF high fat diet
- EPA-E EPA-
- FIG. 3 shows LDL on day 21 when a hamster is fed a high fat diet (HF), a high fat diet + EPA-E (HF + EPA), a high fat diet + DHA-E (HF + DHA) or a standard diet (Standard).
- -A bar graph showing the average of 4-8 animals with respect to C values.
- FIG. 4 shows CETP on day 21 when a hamster is fed a high fat diet (HF), a high fat diet + EPA-E (HF + EPA), a high fat diet + DHA-E (HF + DHA) or a standard diet (Standard). It is a bar graph which shows the average value of 4-8 animals regarding an activity value.
- the activity value of each group is calculated based on the activity value of the high fat diet (HF).
- FIG. 5 shows LDL on day 21 when a hamster is fed a high fat diet (HF), a high fat diet + EPA-E (HF + EPA), a high fat diet + DHA-E (HF + DHA) or a standard diet (Standard). -Correlation diagram of C value and CETP activity value.
- the present invention uses at least one selected from the group consisting of EPA and pharmaceutically acceptable salts, esters and derivatives thereof as an active ingredient, and enhances liver lipid formation or has a mild fatty liver, preferably A weight gain inhibitor (decrease) or an anti-obesity agent for obesity that cannot be obtained, and a method for using the same.
- the present invention uses at least one selected from the group consisting of EPA and pharmaceutically acceptable salts, esters and derivatives thereof as an active ingredient, suppresses CETP activity increase, and suppresses LDL-C value increase.
- An EPA-containing weight gain inhibitor (decrease) or anti-obesity agent and a method of using the same.
- At least one selected from the group consisting of EPA, which is an active ingredient of the weight gain inhibitor (decrease) agent or anti-obesity agent of the present invention, and pharmaceutically acceptable salts, esters and derivatives thereof, is a combination with a CETP inhibitor It can be set as a medicine (concomitant drug) or a combination composition (compound drug).
- the “high fat meal” means a meal having a fat content per weight of about 20% or more.
- the term “high fat diet” or similar terms used in the present invention means a meal in which the ratio of calories from fat to total calories is about 40% or more.
- the high fat food used in the present invention may be a conventional animal food (such as a pet food) that is commercially available as a normal fat food or a controlled food, a high fat food, an active food, or a functional food.
- the “high fat high sucrose diet” means a diet having a fat content of about 20% or more per weight and a sucrose content of about 30% or more.
- the high-fat and high-sucrose diet used in the present invention is a conventional animal diet (such as pet food) that is commercially available as a normal fat diet or controlled diet, a high-fat diet, a high-fat high-sucrose diet, an active diet, or a functional diet. It may be.
- Continuous intake of high-fat meal means that a meal with a fat content per weight of about 20% or more is continuously ingested 3 meals a day for 21 days or more each time. However, including a case where a meal having a fat content per weight of about 20% or more is continuously ingested once a day or more for 60 days or more, and ingested in a total of 60 days or more within 6 months without continuing.
- “obesity” means a state in which adipose tissue is excessively accumulated.
- “obesity” preferably means a state where the BMI is 25 or more, more preferably 30 or more, and even more preferably 35 or more.
- BMI is used as one index for measuring the risk of disease.
- BMI (kg / m 2 ) is obtained by dividing the body weight (in kilograms) by the height (m) squared.
- fatty liver means a state in which fat (mainly neutral fat) is excessively accumulated in the liver, particularly hepatocytes. Medically, it is defined as a state in which fat vacuoles are observed in 30% or more of hepatocytes. In addition, the liver forms neutral fat from the absorbed nutrients, a part of which is stored in hepatocytes, and 3 to 5% of fat is contained even in a healthy liver. When fat is accumulated in hepatocytes and the hepatocytes contain 10% by mass or more of fat, it is also called fatty liver.
- “Fat Liver” when fatty liver tissue is observed with a microscope, it is confirmed that lipid droplets (spherical fat) are abnormally increased in hepatocytes, and lipid droplets are recognized by more than 1/3 of hepatocytes. It is said that in the present invention, “mild fatty liver” means a state in which fatty vacuoles are observed in 30% or less, preferably 20% or less, more preferably 10% or less of hepatocytes. Further, “mild fatty liver” also means a case where fat is contained in hepatocytes at 10% by mass or less, preferably 8% by mass or less.
- fatty fatty liver also means a case where fat droplets are found to be 1/3 or less, preferably 1/5 or less, more preferably 1/10 or less of hepatocytes. Furthermore, it also means a case where unevenness of fat infiltration (mottled fatty liver) is widely observed in an ultrasonic image (echo).
- Fatty liver has almost no physical symptoms, and is often found and discovered by accident in liver examinations and blood tests.
- liver function test values such as aspartate aminotransferase (AST (GOT)) and alanine aminotransferase (ALT (GPT)) are high, but unlike other liver diseases, it is characteristic of fatty liver.
- AST aspartate aminotransferase
- ALT alanine aminotransferase
- echo abdominal ultrasound
- fatty liver is rendered white compared to normal liver. Normally, the liver is in contact with the right kidney, and both have the same degree of black and white (hepatic kidney contrast), but in the case of fatty liver, a clear difference can be confirmed in the degree of black and white.
- fatty liver is diagnosed from the findings of blood vessels inside the liver.
- “pharmaceutically acceptable” means that a substance or composition is chemically and / or toxicologically sensitive to other ingredients in the formulation and / or to the mammal being treated by the formulation. It is shown that it can be adapted.
- the “therapeutically effective amount” means (i) treating or preventing a specific disease, illness or disorder, (ii) reducing, improving or eliminating one or more symptoms of the specific disease, illness or disorder. Or (iii) the amount of a compound that prevents or delays (eg, reduces food intake or appetite) the onset of one or more symptoms of a particular disease, illness or disorder.
- the “subject” to which the weight gain inhibitor (decrease) and / or anti-obesity agent of the present invention is administered is not particularly limited, but humans, mammals such as farm animals, dogs, cats and other domestic animals. It means animals, mice, rats, guinea pigs, hamsters, rabbits and the like, preferably means animals having CETP such as humans, hamsters, rabbits, monkeys, and more preferably means humans.
- treatment means, for example, decreasing the severity of a related disease by decreasing the total body weight or decreasing the fat mass.
- prevention refers to preventing the occurrence of obesity (weight gain), that is, administering the compound of the present invention before the onset of an obesity state. This means that the compounds of the invention are used as prophylactics to prevent weight gain or prevent diseases that can develop due to weight gain.
- EPA has 20 carbon-carbon double bonds in the molecule with 20 carbon atoms and a total cis 5 of ⁇ 3 polyunsaturated fatty acid having the first double bond at the third position from the methyl group side. , 8, 11, 14, 17 icosapentaic acid (all cis-5,8,11,14,17-Icosapentanoic acid).
- EPA in the present invention is used to mean not only EPA but also EPA derivatives such as pharmaceutically acceptable salts, esters and amides, phospholipids, and glycerides thereof. is there.
- EPA used in the present invention may be a synthetic product, a semi-synthetic product, or a natural product, or may be in the form of a natural oil containing these.
- a natural product means what was extracted from the natural oil containing EPA by a well-known method, what was roughly refined
- Semi-synthetic products include polyunsaturated fatty acids produced by microorganisms, etc., and those obtained by subjecting these polyunsaturated fatty acids or natural polyunsaturated fatty acids to chemical treatments such as esterification and transesterification It is. In the present invention, as EPA, one of these can be used alone, or two or more can be used in combination.
- EPA specifically, EPA, pharmaceutically acceptable salts thereof, inorganic bases such as sodium salt and potassium salt, organic bases such as benzylamine salt and diethylamine salt, arginine salt, lysine salt and the like
- inorganic bases such as sodium salt and potassium salt
- organic bases such as benzylamine salt and diethylamine salt
- arginine salt lysine salt and the like
- the salt and ester with basic amino acid include alkyl esters such as ethyl ester and esters such as mono-, di- and TG. Preferred is ethyl ester, ie EPA-E.
- the purity of EPA is not particularly limited, but usually, the content of EPA in the total fatty acids of the composition of the present agent is preferably 45% by mass or more, more preferably 70% by mass or more, still more preferably 85% by mass or more, even more preferably. Is 90% by mass or more, more preferably 95% by mass or more, and particularly preferably 96.5% by mass or more. That is, the present agent composition more preferably has a high EPA purity.
- the present agent composition may contain ⁇ 3 polyunsaturated fatty acids other than EPA such as DHA, docosapentaenoic acid (DPA), ⁇ -linolenic acid, and pharmaceutically acceptable salts or esters thereof.
- DHA docosapentaenoic acid
- ⁇ -linolenic acid ⁇ -linolenic acid
- pharmaceutically acceptable salts or esters thereof it is preferable that the content of fatty acids other than EPA is small, and it is particularly preferable that DHA is less than 2% by mass, preferably less than 1% by mass, more preferably substantially free or below the detection limit.
- long-chain unsaturated fatty acids are desired to have a low content of ⁇ 6 polyunsaturated fatty acids, especially arachidonic acid, preferably less than 2% by weight, more preferably less than 1% by weight, and substantially free of arachidonic acid, Or the aspect below a detection limit is especially preferable.
- ⁇ 6 polyunsaturated fatty acids especially arachidonic acid, preferably less than 2% by weight, more preferably less than 1% by weight, and substantially free of arachidonic acid, Or the aspect below a detection limit is especially preferable.
- the terms “ ⁇ 3 polyunsaturated fatty acid”, “DHA”, “DPA” and “ ⁇ -linolenic acid” in the present invention are not only free fatty acids but also pharmaceutically acceptable salts and esters thereof. It may also be used to include fatty acid derivatives such as amides, phospholipids, and glycerides.
- EPA-E used for the improvement or therapeutic agent of the present invention has less undesirable impurities for cardiovascular events such as saturated fatty acids and arachidonic acid compared with fish oil or fish oil concentrate, and is over-nutritioned or excessive intake of vitamin A It is possible to exert the effect without any problem.
- it since it is an ester, it has a higher oxidation stability than fish oil, which is mainly a TG, and a sufficiently stable composition can be obtained by adding a normal antioxidant.
- This EPA-E is a soft capsule (trade name Epadale: Mochida) containing high-purity EPA-E (96.5% by mass or more) available as a therapeutic agent for ASO (occlusive arteriosclerosis) and hyperlipidemia in Japan. Can be used.
- the weight gain inhibitor (decrease) or anti-obesity agent of the present invention has a therapeutic effect using at least one selected from the group consisting of EPA and pharmaceutically acceptable salts, esters and derivatives thereof as an active ingredient. If it uses by the aspect obtained, the use aspect will not be restrict
- a CETP inhibitor (described in International Publication No. WO1998 / 035937 (Japan Tobacco Inc.), International Publication No. W-2006 / 014357 (Merck & Co., Inc.), etc.) Compounds), specifically dalcetrapib, anacetrapib, etc. can be used and / or blended together.
- the “combination” of the active ingredients is to use the active ingredients in combination.
- the active ingredient is administered as a combination containing both EPA and the second active ingredient, and the EPA and the second active ingredient are combined.
- administered separately as a separate formulation at the same time or with a time difference (1) an aspect in which a composition containing the second active ingredient is administered to a patient to whom EPA is administered; and (2) The aspect which administers the composition which contains EPA as an active ingredient to the patient who receives the composition containing the 2nd active ingredient is included.
- the term “combination” is not necessarily limited to the case where it is present in the patient's body, for example, in the blood at the same time.
- the use aspect which administers the composition containing the other active ingredient in the state currently expressed in the. It is a use mode in which the improvement or therapeutic effect of dyslipidemia can be obtained using the improvement or therapeutic agent of the present invention.
- a use mode that is present simultaneously in the body of the patient, for example, in the blood is desirable, and preferably, the other effective within 24 hours after administration of the composition containing one active ingredient to the patient.
- Preferred is the mode of use in which the composition containing the component is administered.
- the form of combined use in the weight gain inhibitor (decrease) agent or anti-obesity agent of the present invention is not particularly limited, as long as the active ingredients are combined.
- As the form of such a preparation for example, (1) administration of a single preparation obtained by simultaneously formulating active ingredients, and (2) two kinds of preparations obtained by separately formulating active ingredients Combined as a kit, or prepared separately and not combined, and administered simultaneously by the same route of administration, (3) Two types of preparations obtained by separately formulating active ingredients are combined as a kit or not combined (4) Prepare two different preparations obtained by formulating the active ingredients separately as a kit, or prepare separately without combining them.
- both active ingredients may be mixed immediately before the administration, may be administered separately, or can be used with various administration purposes shifted in a planned manner.
- a preparation containing one active ingredient is administered, and the preparation containing the other active ingredient is administered and acted at the time when the effect starts to appear or when it is fully expressed. There is a way.
- a preparation containing one active ingredient is administered once a day
- a preparation containing the other active ingredient particularly a preparation containing EPA, several times a day, for example, it may be administered twice or three times, and may be administered once a day in the same manner. If both active ingredients are administered once a day, or if they are administered simultaneously or once a day as a combination drug, the burden on the patient's medication will be reduced, compliance with medication will be improved, and improvement / treatment effects and side effect reduction will also increase. Expected and preferred.
- both preparations are administered and dosing of one preparation is stopped at the time when the effect starts to appear or when the effect is fully manifested.
- the dose of the active ingredient may be decreased stepwise.
- a method of administering the other preparation during the drug withdrawal period of one preparation can be mentioned.
- the therapeutic effect here means weight gain suppression (decrease) action or anti-obesity action, weight gain or biochemical marker related to dyslipidemia caused by obesity or improvement or treatment effect, or Although it will not specifically limit if it progresses to a metabolic syndrome, a cardiac / cerebrovascular event, a limb peripheral ulcer, or gangrene, etc. For example, the improvement of the lipid marker concentration in plasma is illustrated.
- VLDL-C very low density lipoprotein cholesterol
- IDL-C intermediate density lipoprotein cholesterol
- VHDL-C very high density lipoprotein cholesterol
- free fatty acid phospholipid, chylomicron, apolipoprotein B (ApoB), lipoprotein (a) (Lp (a)), remnant-like lipoprotein cholesterol (RLP-C), small particle low density lipoprotein cholesterol (sdLDL-C) and the like.
- the therapeutic effect is to suppress an increase in LDL-C value.
- the improvement or therapeutic effect may be monitored by other biochemical / pathological or pathological parameters related to dyslipidemia.
- the dosage and administration period of EPA used for the improvement or therapeutic agent of the present invention is an amount and a period sufficient to exhibit the intended effect, but its dosage form, administration method, number of administrations per day, symptoms
- the amount can be appropriately increased or decreased depending on the degree, weight, age and the like.
- oral administration for example, as EPA-E, 0.1 to 5 g / day, preferably 0.2 to 3 g / day, more preferably 0.4 to 1.8 g / day, and further preferably 0.6
- 0.9 to 0.9 g / day is administered in 1 to 3 divided doses, the entire dose may be administered in one or several divided doses as necessary.
- the EPA of the present invention is high in order to suppress (decrease) weight gain induced by intake of a high fat diet and / or to suppress an increase in CETP activity and to suppress an increase in LDL-C value. About 1-2% may be added to the fat meal.
- the weight gain inhibitor (decrease) or anti-obesity agent of the present invention may be used in combination so that the amount of EPA is about 1 to 2% of the high fat diet.
- the administration time is preferably during or after meals, more preferably immediately after meals (within 30 minutes).
- bile acid derivatives such as ursodeoxycholic acid, chenodeoxycholic acid, bile powder, deoxycholic acid, cholic acid, bile extract, bear bile, cow yellow or dehydrocholic acid It is also preferable to do.
- the absorption rate will improve, so if administered during a meal, after or after meals, such as before meals, immediately before meals or before going to bed , Even if administered to patients with decreased ability to absorb in the intestinal tract (elderly, patients with bowel disease, post-intestinal surgery, end-stage cancer patients, taking lipase inhibitors, etc.), or even if the dose is reduced
- the effects of the invention can be expressed.
- the administration period is preferably 1 year, more preferably 2 years, even more preferably 3.5 years, even more preferably 5 years.
- Abnormal dyslipidemia or peripheral blood circulation disorders or abnormal biochemical indicators during hyperplasia or mild fatty liver, or continued obesity without increased liver lipid formation or fatty liver It is desirable to continue the administration while the value or the like continues, or while the risk of the onset and / or recurrence of dyslipidemia and peripheral blood circulation associated therewith continues.
- administration every other day, administration for 2-3 days per week, and in some cases, a drug holiday of about 1 day to 3 months, preferably about 1 week to 1 month, can be provided.
- the Japan Atherosclerosis Society has adopted LDL-C values (> 140 mg / dL dyslipidemia) and HDL-C values (40 mg / dL> dyslipidemia) as “diagnosis criteria for dyslipidemia”
- LDL-C values > 140 mg / dL dyslipidemia
- HDL-C values 40 mg / dL> dyslipidemia
- it emphasizes the importance of the LDL-C value as a diagnostic criterion for screening a population with a high risk of atherosclerotic disease.
- hypercholesterolemia or high LDL-C blood is closely related to vascular disorders such as coronary artery disease and cerebral infarction. Can be prevented (Arteriosclerotic Disease Prevention Guidelines, Japanese Society for Arteriosclerosis, 2007).
- At least one selected from the group consisting of the EPA of the present invention and pharmaceutically acceptable salts, esters and derivatives thereof suppresses (decreases) weight gain and suppresses an increase in LDL-C value. Therefore, EPA and its pharmacologically acceptable products for obesity with no increase in hepatic lipid formation induced by continuous intake of a high fat diet or mild obesity without fatty liver formation, preferably obesity without fatty liver
- a weight gain inhibitor (decrease) or an anti-obesity agent comprising at least one selected from the group consisting of salts, esters and derivatives as an active ingredient, not only suppression of weight gain (anti-obesity) but also LDL-
- the inhibitory action on the increase in C value leads to the prevention of diseases caused by high LDL-C blood, such as coronary artery disease and vascular disorders such as cerebral infarction.
- HDL-C level is one of the major risk factors for coronary heart disease, there is no treatment that can sufficiently increase HDL-C levels.
- the HDL-C level is increased by inhibiting CETP, and research and development of CETP inhibitors are also being conducted.
- CETP is a glycoprotein produced mainly in the liver and small intestine, and has the effect of transferring cholesterol esters in HDL-C to VLDL-C and LDL-C.
- HDL-C is increased by environmental factors such as alcohol consumption and exercise, these are accompanied by a decrease in CETP activity, and complete deficiency due to CETP gene abnormality causes marked hyperHDL-C blood. The increase is thought to involve CETP.
- EPA of the present invention EPA of the present invention
- pharmaceutically acceptable salts, esters and derivatives thereof Even during continuous intake of a high fat diet, an increase in HDL-C value can be expected simultaneously with an increase in LDL-C value, and this synergistic effect results in dyslipidemia, hypertension, arteriosclerosis, diabetes It can also be expected to be used for prevention and improvement of metabolic syndrome such as obesity.
- the combined use of EPA and a CETEP inhibitor can synergize with a CETP inhibitor in a weight gain inhibitory (decrease) or anti-obesity action or an LDL-C reducing action.
- the effect or enhancement of the effect of the CETP inhibitor can be expected, the dose of the CETP inhibitor can be reduced, and the side effects of the CETP inhibitor can be expected to be reduced.
- the weight gain inhibitor (decrease) agent or anti-obesity agent of the present invention is used as an active ingredient as it is, or generally used as a compound (may contain other ingredients inevitably contained during purification).
- An appropriate pharmaceutical preparation can be prepared by appropriately selecting and combining with additives such as an inhibitor, a buffer, a colorant and an absorption accelerator.
- the above pharmaceutical preparations include, for example, lactose, partially pregelatinized starch, hydroxypropylcellulose, macrogol, tocopherol, hydrogenated oil, sucrose fatty acid ester, hydroxypropylmethylcellulose, titanium oxide, talc, dimethylpolysiloxane, dioxide Silicon, carnauba wax, sodium desoxycholate and the like may be contained.
- oil-soluble antioxidants such as butylated hydroxytoluene, breached hydroxyanisole, propyl gallate, propyl gallate, pharmaceutically acceptable quinones, astaxanthins and ⁇ -tocopherols It is desirable to contain an effective amount of at least one selected from the group consisting of antioxidants.
- Emulsions containing water are susceptible to oxidation, and are particularly susceptible to oxidation when the emulsion droplet size is reduced. Therefore, an effective amount of a water-soluble antioxidant and / or an oil-soluble antioxidant is contained as an antioxidant. It is desirable that both a water-soluble antioxidant and an oil-soluble antioxidant are contained.
- water-soluble antioxidants include ascorbic acid and its derivatives, erythorbic acid and its derivatives, nitrite, citric acid, etc.
- oil-soluble antioxidants include butylated hydroxytoluene, breached hydroxyanisole, propyl gallate And propyl gallate, pharmaceutically acceptable quinone, astaxanthin and ⁇ -tocopherol.
- the storage temperature is preferably room temperature, more preferably in a cool and dark place, and when frozen, there is a risk that the emulsification stability will deteriorate, so it is preferable to avoid frozen storage.
- the dosage form of the formulation varies depending on the combined form of the active ingredient of the present invention and is not particularly limited.
- oral formulations include tablets, film-coated tablets, capsules, microcapsules, granules, fine granules,
- self-emulsifying preparations include tablets, film-coated tablets, capsules, microcapsules, granules, fine granules
- self-emulsifying preparations include, for example, ointments, suppositories, injections (emulsifying, suspending, non-aqueous) ) Or external injections such as solid injections, infusion preparations, transdermal absorption agents, etc.
- emulsions or suspensions when in use, for oral, intravenous or intraarterial, inhalation, rectal, vaginal or external use
- simple oral formulations are desirable, especially in capsules, such as soft capsules or microcapsules, or tablets or film-coated tablets Preferred oral administration of.
- it may be orally administered as an enteric preparation or sustained-release preparation, and it is also preferably administered orally as a jelly agent to dialysis patients or patients who have difficulty swallowing.
- the weight gain inhibitor (decrease) or anti-obesity agent of the present invention can be used in combination with or combined with the second active ingredient.
- the weight gain inhibitor (decrease) or anti-obesity agent of the present invention and the preparation containing the second active ingredient are formulated by known methods, respectively. .
- the second active ingredient is not particularly limited, but it is preferable not to diminish the effects of the present invention.
- Examples of combined use or combination include CETP inhibitors (International Publication No. WO1998 / 035937 (Japan Tobacco Inc.), International Publication No. WO2006 / 014357 (compounds described in Merck & Co., Inc., etc.), specifically, dalcetrapib, anacetrapib and the like.
- the dosage of the second preparation used in the combined use or combination of weight gain inhibitor (decrease) / anti-obesity agent of the present invention is preferably used within the range of dosage and administration of the preparation alone.
- the type, dosage form, administration method, and number of administrations per day can be appropriately increased or decreased depending on the degree of symptoms, body weight, sex, age, and the like.
- the dosage of the additional preparation is usually about 0.001 mg to about 100 mg per kg body weight per day, preferably about 0.1 mg to about 10 mg, divided into 1 to 3 times. However, if necessary, the whole amount may be divided into several times.
- the dosage form of the compounding agent is not particularly limited.
- oral preparations include tablets, film-coated tablets, capsules, microcapsules, granules, fine granules, powders, self-emulsifying preparations, and oral liquid preparations.
- the parenteral preparation is administered to a patient as an external preparation such as an injection, an infusion preparation or a transdermal absorption agent.
- a sustained-release preparation or a preparation that releases two agents at a time interval is also included.
- the compounding agent of the present invention can contain a pharmaceutically acceptable excipient in addition to the active ingredient.
- a pharmaceutically acceptable excipient in addition to the active ingredient.
- known antioxidants, coating agents, gelling agents, flavoring agents, flavoring agents, preservatives, emulsifiers, pH adjusting agents, buffering agents, coloring agents and the like may be contained.
- the preferred dosage form of the compounding agent and the embodiment of the excipient are the same as the above-described embodiment at the time of combined use.
- the compounding agent of the present invention can be formulated according to a conventional method.
- the EPA powder is, for example, (A) EPA-E, (B) dietary fiber, (C) starch hydrolyzate and / or low saccharified reduced starch hydrolyzate, and (D) a water-soluble antioxidant containing water.
- the oil emulsion is obtained by a known method such as drying under high vacuum and pulverization (Japanese Patent Laid-Open No. 10-99046).
- EPA-E powder and powder of nicotinic acid or a pharmaceutically acceptable derivative thereof in accordance with conventional methods, granules, fine granules, powders, tablets, film-coated tablets, chewable tablets, Release tablets, orally disintegrating tablets (OD tablets) and the like can be obtained.
- EPA-E is emulsified in a water-soluble polymer solution such as hydroxypropylmethylcellulose, and the resulting emulsion is sprayed onto an additive such as lactose to obtain a powder (specialized product). No. 8-157362) and mixing with a powder of a nicotinic acid derivative and tableting can be obtained by a known method.
- sustained release tablet for example, (1) one of EPA-E and nicotinic acid derivative is formed in the inner layer and the other is formed in the outer layer. (2) A disk-shaped matrix containing each component is stacked in two layers. (3) A granular capsule containing one component is embedded in a matrix containing the other component, (4) some device for sustained release is applied after mixing both agents in advance. It is desirable that the release rate of each active ingredient is adjusted, and both agents may be released at the same time or may be released separately at a time difference.
- JP-A-8-333243 a technique described in JP-A-2005-21124
- JP-A-2005-21124 can be produced according to a known method. It can.
- a nicotinic acid derivative that does not dissolve in EPA such as a soft capsule or a liquid
- the above-described device is necessary.
- the compounding agent of the present invention includes a preparation that is devised for compounding EPA and a nicotinic acid derivative into one agent.
- the compounding agent of the present invention is desirably released and absorbed so that the pharmacological action of the active ingredient can be expressed.
- the compounding agent of the present invention is excellent in the release of active ingredients, is excellent in the absorption of active ingredients, is excellent in the dispersibility of the active ingredients, is excellent in the storage stability of the compounding agents, and is excellent in patient convenience or compliance. It is desirable to have at least one effect of the preparation.
- the weight gain inhibitor (decrease) or anti-obesity agent containing at least one selected from the group consisting of the EPA of the present invention and pharmaceutically acceptable salts, esters and derivatives thereof as an active ingredient is an animal, particularly a mammal. It is also effective in improving dyslipidemia, treatment or prevention of recurrence, or suppressing progression to metabolic syndrome, cardio-cerebral vascular events, peripheral limb ulcers or gangrene. Mammals include, for example, domestic animals such as humans, cattle, horses, and pigs, and domestic animals such as dogs, cats, rabbits, rats, and mice, with humans being preferred.
- the improvement or therapeutic effect can further be heightened by reducing the burden of a patient's medication by setting it as a compounding agent or kit agent with a 2nd active ingredient, and raising medication compliance.
- the weight gain inhibitor (decrease) agent / anti-obesity agent of the present invention also includes foods such as functional foods, health foods, foods for specified health use, It can be applied as an additive to diet foods, food supplements or enteral nutritional foods, or these foods.
- Body weight was measured every day from the administration start date.
- the weight gain rate on the 21st day of each group was higher in the high fat diet group than in the standard feed group and became obese, but in the EPA administration group compared to the control high fat diet group. It was low and equal to or less than that of the standard feed group, and a significant suppression (reduction) of body weight gain was observed.
- the weight gain rate of the DHA group was higher than that of the standard feed group, and almost the same as that of the high fat diet group, and the weight gain inhibitory effect was not confirmed. This is useful because EPA shows an inhibitory effect on weight gain (obesity) that cannot be suppressed by DHA. (FIG.
- Example 2 [Effects on LDL-C levels in high-fat hamsters] The effects of EPA and DHA on LDL-C values were confirmed using a high fat diet-fed hamster.
- blood was collected on days 7, 14, and 21 after the start of administration, and plasma was separated by centrifugation.
- the concentration of LDL-C in plasma was measured using a commercially available measuring reagent (L type Wako LDL-C, manufactured by Wako Pure Chemical Industries, Ltd.).
- FIG. 3 shows the plasma LDL-C concentration on the 21st day after administration.
- the EPA group showed an inhibitory effect on the increase in plasma LDL-C level.
- Example 3 [Effects on CETP activity in high fat diet hamsters] The effect
- blood was collected on days 7, 14, and 21 after the start of administration, and plasma was separated by centrifugation.
- the CETP activity value was measured using a measuring reagent (BioVision, CETP activity assay kit).
- the CETP activity value on the 21st day after administration is shown in FIG. An increase in CETP activity was confirmed in the high fat diet group and the DHA group. On the other hand, in the EPA group, the inhibitory effect on the CETP activity increase was confirmed.
- FIG. 5 shows a correlation diagram regarding the LDL-C value and the CETP activity value.
- a very good correlation was observed between LDL-C values and CETP activity values when high fat diet hamsters were fed EPA-E.
- EPA-E By ingesting EPA-E, it can be determined that the increase in CETP activity was suppressed, and as a result, the increase in LDL-C value was suppressed. Therefore, a synergistic decrease in the LDL-C value can be expected by the combined use with a CETP inhibitor.
- the plasma lipid marker value deteriorates with continuous intake of a high fat diet, but the intake of EPA-E suppressed the deterioration of the plasma lipid marker value. Therefore, the weight gain inhibitor (decrease) or anti-obesity agent of the present invention is expected and useful for improving dyslipidemia even during continuous intake of a high fat diet.
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Abstract
Description
佐藤らは、高脂肪高ショ糖食を継続摂取させ、肝脂質形成の亢進または脂肪肝を伴う肥満を発症したマウスモデルにおいては、高純度イコサペント酸エチルエステル(以下「EPA-E」と略記する。)が体重増加抑制作用に有効であるが、高脂肪食を継続摂取し、肝脂質形成の亢進または脂肪肝を伴わない肥満を発症したマウスモデルでは無効であることを報告した(非特許文献8参照)。
ここで、本発明が対象とする肥満は、「BMI25以上の肥満であり、肝脂質形成の亢進または脂肪肝が軽度である肥満および肝脂質形成の亢進または脂肪肝が認められない肥満からなる群から選択される少なくとも一つの肥満」である。
(2)該有効成分がEPA-Eである、上記(1)に記載の体重増加抑制(低下)剤または抗肥満剤。
(3)該有効成分の純度が90質量%以上(高純度)である、上記(1)または(2)に記載の体重増加抑制(低下)剤または抗肥満剤。
(4)該有効成分のCETP活性および/またはLDL-C値の上昇を抑制するための有効用量を含有する、上記(1)ないし(3)のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
(5)DHAならびにその製薬学上許容しうる塩、エステルおよび誘導体を実質的に含有しない、上記(1)ないし(4)のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
(6)該肥満が高脂肪食の摂取、特に継続摂取により誘導される、上記(1)ないし(5)のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
(7)第2の有効成分として、CETP阻害剤からなる群から選ばれる少なくとも1つの化合物と併用するための、EPAならびにその製薬学上許容しうる塩、エステルおよび誘導体からなる群から選ばれる少なくとも1つを有効成分として含有する体重増加抑制(低下)剤または抗肥満剤。
(8)第2の有効成分として、CETP阻害剤の少なくとも1つを含有する、上記(1)ないし(7)のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
(9)該CETP阻害剤がダルセトラピブまたはアナセトラピブである、上記(1)ないし(8)のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
(11)該有効成分が、EPA-Eである、上記(10)に記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(12)該有効成分の純度が、90質量%以上(高純度)である、上記(10)または(11)に記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(13)該有効成分のCETP活性および/またはLDL-C値の上昇を抑制するための有効用量を投与することを含む、上記(10)ないし(12)のいずれか1つに記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(14)該有効成分がDHAならびにその製薬学上許容しうる塩、エステルおよび誘導体を実質的に含有しない、上記(10)ないし(13)のいずれか1つに記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(15)該肥満が高脂肪食の摂取、特に継続摂取により誘導される、上記(10)ないし(14)のいずれか1つに記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(16)第2の有効成分としてCETP阻害剤から選ばれる少なくとも1つの化合物と併用するための、EPAならびにその製薬学上許容しうる塩、エステルおよび誘導体からなる群から選ばれる少なくとも1つを有効成分として含有する体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(17)第1の有効成分として、EPAならびにその製薬学上許容しうる塩、エステルおよび誘導体からなる群から選ばれる少なくとも1つ、ならびに第2の有効成分として、CETP阻害剤からなる群から選択される少なくとも1つを含有する配合剤を投与することを含む、上記(10)ないし(16)のいずれか1つに記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
(18)該CETP阻害剤がダルセトラピブまたはアナセトラピブである、上記(10)ないし(17)のいずれか1つに記載の体重増加抑制もしくは体重低下または肥満の予防、改善もしくは治療のための方法。
本発明によれば、非常に効果が高い体重増加抑制(低下)剤または抗肥満剤が提供される。具体的には、高脂肪食の摂取継続時においても、本発明のEPAを摂取することにより、体重増加または肥満が抑制されることが期待される。
本発明のEPAの投与に関して、最も重要な注目すべきことは、高脂肪食とDHAを摂取した場合、さらには普通食を摂取した場合と比較すると、顕著な体重増加抑制(低下)作用が生じたということである。これは、今まで認識されていなかったことである。即ち、これは、低カロリー食または低脂肪食の摂取に依存することなく、即ち、食事のカロリー値を低下させることなく、体重増加抑制(低下)を達成できるということを意味する。
さらに、本発明のEPAは、体重増加または肥満によって引き起こされる危険性が高い生活習慣病(例えば、脂質異常症等)を予防することができ、脂肪蓄積が関与する疾病・症状を予防・改善することも期待される。具体的には、本発明のEPAは、血中総コレステロール(以下「TC」と略記する。)、トリグリセリド(以下「TG」と略記する。)、LDL-C、高密度リポ蛋白コレステロール(以下「HDL-C」と略記する。)および非HDL-C等の血漿中脂質マーカーの改善、CETP活性上昇抑制等により、生活習慣病の改善または治療効果を示すことが期待される。
また、本発明のEPAは、毒性が非常に低いため、安全性が高い。
本発明は、EPAならびにその製薬学上許容しうる塩、エステルおよび誘導体からなる群から選ばれる少なくとも1つを有効成分として使用する、肝脂質形成の亢進または脂肪肝が軽度である、好ましくは認められない肥満に対する、体重増加抑制(低下)剤または抗肥満剤およびその使用方法である。
また、本発明は、EPAならびにその製薬学上許容しうる塩、エステルおよび誘導体からなる群から選ばれる少なくとも1つを有効成分として使用し、CETP活性上昇を抑制し、LDL-C値上昇を抑制する、EPA含有体重増加抑制(低下)剤または抗肥満剤、およびその使用方法である。
本発明の体重増加抑制(低下)剤または抗肥満剤の有効成分であるEPAならびにその製薬学上許容しうる塩、エステルおよび誘導体からなる群から選ばれる少なくとも1つは、CETP阻害剤との組み合わせ薬(併用薬)または組み合わせ組成物(配合薬)とすることができる。
肥満には、成因別に本態性肥満(単純性肥満)と症候性肥満との2種類がある。脂肪の付き方により、皮下脂肪型肥満(末梢型肥満)と内臓脂肪型肥満(中心型肥満)の2つのタイプに分類される。
本発明における「肥満」は、必ずしも限定されることは無く、上記全てを包含する。
本発明において、「脂肪肝が軽度」とは、肝細胞の30%以下、好ましくは20%以下、より好ましくは10%以下に脂肪空胞が認められる状態を意味する。また、「脂肪肝が軽度」とは、肝細胞内に脂肪が10質量%以下、好ましくは8質量%以下含まれる場合をも意味する。また、「脂肪肝が軽度」とは、脂肪滴が肝細胞の1/3以下、好ましくは1/5以下、より好ましくは1/10以下しか認められない場合をも意味する。さらに、超音波画像(エコー)において、脂肪浸潤のムラ(まだら状脂肪肝)が広く見られる場合をも意味する。
本発明のEPAは、高脂肪食摂取により誘導される体重増加を抑制(低下)させるために、および/または、CETP活性の上昇を抑制し、LDL-C値の上昇を抑制するために、高脂肪食中に約1~2%添加してもよい。高脂肪食を摂取する際にEPAを高脂肪食に対して約1~2%量になるように本発明の体重増加抑制(低下)剤または抗肥満剤を併用してもよい。
高脂肪食を継続摂取時に、EPAをはじめとするω3不飽和脂肪酸を摂取することで、体重増加抑制(低下)作用と同時にLDL-C値の上昇が抑制されるという報告は無い。魚油を投与した場合、体重変化が無く、LDL-C値が上昇すると言う報告が有る。(ザ ジャーナル オブ リピッド リサーチ(The Journal of Lipid Research)、33巻、p263-271、1992年)。
また、EPAがCETP活性上昇抑制作用を有することから、EPAとCETEP阻害剤とを併用することにより、体重増加抑制(低下)もしくは抗肥満作用またはLDL-C低下作用において、CETP阻害剤との相乗効果またはCETP阻害剤の効果増強が期待でき、また、CETP阻害剤の用量を低減することが可能となり、CETP阻害剤の副作用を軽減させることも期待できる。
チュアブル錠であれば、例えば、EPA-Eをヒドロキシプロピルメチルセルロースなどの水溶性高分子溶液中に乳化し、得られた乳化液を乳糖などの添加剤に噴霧して粉粒体を得て(特開平8-157362号参照)、ニコチン酸誘導体の粉体と混合して打錠することなど公知の方法により得ることができる。
徐放錠であれば、例えば(1)EPA-Eおよびニコチン酸誘導体のいずれかを内層に、他方を外層に形成する、(2)各成分を含有する円盤状のマトリックスを2層に重ねる、(3)一成分を含有する粒状カプセルを他方の成分を含有するマトリックス中に埋め込む、(4)両剤を予め混合した後に何らかの徐放のための工夫が施される、などが挙げられる。各有効成分は放出速度を調整されていることが望ましく、両剤同時に放出されてもよいし、別々に時間差で放出されてもよい。
口腔内崩壊錠であれば、例えば特開平8-333243号記載の技術など、口腔用フィルム製剤であれば、例えば特開2005-21124号記載の技術など、公知の方法に準じて製造することができる。単純にはEPAに溶解しないニコチン酸誘導体で、例えば、軟カプセル剤、液剤などにする場合には上記のような工夫が必要である。本発明の配合剤は、このようにEPAとニコチン酸誘導体とを1剤に配合するための工夫をしている製剤を含む。
また、第2の有効成分との配合剤やキット剤とすることで患者の服薬の負担を軽減し、服薬コンプライアンスを高めることで、さらに改善または治療効果を高めることができる。
6週齢の雄性シリアン(Syrian)ハムスター(日本エスエルシー株式会社、日本)を12時間明暗周期、温度(23±3℃)で飼育し、標準飼料を11日間自由摂取させた後、標準飼料群(Standard)(4匹)、高脂肪食群(HF)(8匹)、EPA群(HF+EPA-E)(8匹)、DHA群(HF+DHA-E)(7匹)、の4群を設定した。
(飼育飼料(質量%))
標準飼料は、日本クレア株式会社製のCLEA Rodent Diet CE-2(4.8%脂肪)を、 高脂肪食(HF)はWilson社製のHypercholesterolemic Hamster Diet(ショ糖9%、21%脂肪)を用いた。
[高脂肪食負荷肥満モデルハムスターにおける体重増加抑制効果]
高脂肪食(HF)飼育ハムスターを用いて、EPAおよびDHAの体重増加に対する作用を確認した。
高脂肪食飼育期間中、EPA群には高脂肪食+2%EPA-E(98.24%EPA-Eを含有、日本水産社製)、DHA群には高脂肪食+2%DHA-E(Equateq Ltd製、97.4%DHA-Eを含有)を混餌投与(1日1回(朝)交換)した。対照群として、高脂肪食もしくは標準飼料(4.8%脂肪含有)を投与(1日1回(朝)交換)した。投与開始日より毎日体重を測定した。各群の21日目の体重増加率は、標準飼料群と比較して高脂肪食群で高く、肥満状態となっていたが、EPA投与群においては対照である高脂肪食群と比較して低く、かつ標準飼料群と同等以下であり、顕著な体重増加抑制(低下)作用が認められた。一方、DHA群の体重増加率は、標準飼料群と比較して高く、かつ高脂肪食群とほぼ同等であり、体重増加抑制効果は確認されなかった。このことはDHAにより抑制することのできない体重増加(肥満)に対して、EPAが抑制効果を示しており有用である。(図1)また、ハムスターの肝臓の所見においては、いずれの各群においても、明らかな脂肪肝は認められなかった。
なお、高脂肪食群、EPA群およびDHA群の一日当りの食餌摂取量(エネルギー換算)の間に有意な差は認められなかった。
以上より、EPA-Eが、肥満、特に、肝脂質形成の亢進が認められないまたは脂肪肝を伴わない肥満に対する、体重増加抑制(低下)または抗肥満作用を示すことが確認された。
また、各群の21日目の副睾丸脂肪量(図2)を測定したところ、EPA群において脂肪量の増加が有意に抑制されていることが確認できた。この点から、EPA-Eによる体重増加抑制(低下)効果は、脂肪量の増加抑制(低下)作用、すなわち、抗肥満作用によることが確認された。
[高脂肪食ハムスターにおけるLDL-C値への効果]
高脂肪食飼育ハムスターを用いてEPAおよびDHAのLDL-C値に対する作用を確認した。
実験例1の体重増加抑制作用の実験に合わせて、投与開始後、7、14および21日目に採血し、遠心分離にて血漿を分離した。市販の測定試薬(和光純薬社製、LタイプワコーLDL-C)を用いて、血漿中のLDL-Cの濃度を測定した。投与21日目における血漿中LDL-C値濃度を図3に示した。
高脂肪食群およびDHA群では、血漿中LDL-C値の上昇作用が認められた。一方、前2群と比較して、EPA群では血漿中LDL-C値の上昇抑制作用が認められた。
[高脂肪食ハムスターにおけるCETP活性値への効果]
高脂肪食飼育ハムスターを用いてEPAおよびDHAのCETP活性値に対する作用を確認した。
実験例1の体重増加抑制作用の実験に合わせて、投与開始後、7、14および21日目に採血し、遠心分離にて血漿を分離した。測定試薬(Bio Vision社製、CETP activity assay kit)を用いて、CETP活性値を測定した。投与21日目におけるCETP活性値を図4に示した。
高脂肪食群およびDHA群では、CETP活性の上昇が確認された。一方、EPA群ではCETP活性上昇に対する抑制作用が確認できた。
[高脂肪食ハムスターにおける、LDL-C値およびCETP活性値の相関]
LDL-C値とCETP活性値に関する相関図を、図5に示す。高脂肪食飼育ハムスターにEPA-Eを摂取させた時に、LDL-C値と、CETP活性値間には非常に良い相関性が観測された。EPA-Eを摂取することにより、CETP活性上昇が抑制され、その結果LDL-C値の上昇が抑制されたものと判断できる。したがって、CETP阻害剤との併用により、LDL-C値の相乗的な低下が期待できる。通常、高脂肪食の継続摂取においては血漿中脂質マーカー値が悪化するが、EPA-Eを摂取することで、血漿中脂質マーカー値の悪化が抑制された。よって本発明の体重増加抑制(低下)剤または抗肥満剤は、高脂肪食の継続摂取時においても、脂質異常症の改善効果を示すことが期待され有用である。
Claims (8)
- 肝脂質形成の亢進もしくは脂肪肝が軽度である、または肝脂質形成の亢進もしくは脂肪肝が認められない肥満に対する、イコサペント酸、その製薬学上許容しうる塩、エステルおよび誘導体から選ばれる少なくとも1つを有効成分として含有する体重増加抑制(低下)剤または抗肥満剤。
- 該有効成分が、イコサペント酸エチルエステルである、請求項1に記載の体重増加抑制(低下)剤または抗肥満剤。
- 該有効成分の純度が、90質量%以上である、請求項1または請求項2に記載の体重増加抑制(低下)剤または抗肥満剤。
- 該有効成分の、コレステロールエステル転送蛋白(CETP)活性および/または低密度リポ蛋白コレステロール値の上昇を抑制するための有効用量を含有する、請求項1ないし請求項3のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
- ドコサヘキサエン酸、その製薬学上許容しうる塩、エステルおよび誘導体を実質的に含有しない、請求項1ないし請求項4のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
- 該肥満が高脂肪食の摂取により誘導される、請求項1ないし請求項5のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
- 第2の有効成分としてコレステロールエステル転送蛋白(CETP)阻害剤から選ばれる少なくとも1つの化合物と併用するための、請求項1ないし請求項6のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
- 第2の有効成分としてコレステロールエステル転送蛋白(CETP)阻害剤の少なくとも1つを含有する、請求項1ないし請求項7のいずれか1つに記載の体重増加抑制(低下)剤または抗肥満剤。
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EP12807030.7A EP2730281B1 (en) | 2011-07-07 | 2012-07-06 | Anti-obesity agent comprising high-purity epa |
CA2840985A CA2840985A1 (en) | 2011-07-07 | 2012-07-06 | Anti-obesity agent comprising high-purity epa |
US14/129,890 US9345681B2 (en) | 2011-07-07 | 2012-07-06 | Anti-obesity agent comprising high-purity EPA |
KR1020147000293A KR20140074268A (ko) | 2011-07-07 | 2012-07-06 | 고순도 epa를 함유하는 항비만제 |
CN201280033430.2A CN103813789A (zh) | 2011-07-07 | 2012-07-06 | 含有高纯度epa的抗肥胖药 |
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JP2007514733A (ja) * | 2003-12-19 | 2007-06-07 | プロノヴァ バイオケア アクティーゼルスカブ | Epa及びdhaの少なくとも1つ又はこれらのいずれかの組み合わせを含む脂肪酸組成物の使用 |
JP2008505120A (ja) * | 2004-07-02 | 2008-02-21 | メルク エンド カムパニー インコーポレーテッド | Cetp阻害薬 |
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JP2007514733A (ja) * | 2003-12-19 | 2007-06-07 | プロノヴァ バイオケア アクティーゼルスカブ | Epa及びdhaの少なくとも1つ又はこれらのいずれかの組み合わせを含む脂肪酸組成物の使用 |
JP2008505120A (ja) * | 2004-07-02 | 2008-02-21 | メルク エンド カムパニー インコーポレーテッド | Cetp阻害薬 |
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JP7099821B2 (ja) | 2017-12-20 | 2022-07-12 | ポッカサッポロフード&ビバレッジ株式会社 | Pcsk9阻害剤及びコレステロール代謝改善用食品組成物 |
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US9345681B2 (en) | 2016-05-24 |
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CA2840985A1 (en) | 2013-01-10 |
KR20140074268A (ko) | 2014-06-17 |
EP2730281A4 (en) | 2015-02-18 |
CN103813789A (zh) | 2014-05-21 |
JPWO2013005834A1 (ja) | 2015-02-23 |
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