WO2012102277A1 - ガストリン産生抑制剤およびそれを含有する食品組成物 - Google Patents
ガストリン産生抑制剤およびそれを含有する食品組成物 Download PDFInfo
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- WO2012102277A1 WO2012102277A1 PCT/JP2012/051468 JP2012051468W WO2012102277A1 WO 2012102277 A1 WO2012102277 A1 WO 2012102277A1 JP 2012051468 W JP2012051468 W JP 2012051468W WO 2012102277 A1 WO2012102277 A1 WO 2012102277A1
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- Prior art keywords
- lactobacillus
- bacteria
- production inhibitor
- food
- gastrin
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; PREPARATION THEREOF
- A23C9/00—Milk preparations; Milk powder or milk powder preparations
- A23C9/12—Fermented milk preparations; Treatment using microorganisms or enzymes
- A23C9/123—Fermented milk preparations; Treatment using microorganisms or enzymes using only microorganisms of the genus lactobacteriaceae; Yoghurt
- A23C9/1234—Fermented milk preparations; Treatment using microorganisms or enzymes using only microorganisms of the genus lactobacteriaceae; Yoghurt characterised by using a Lactobacillus sp. other than Lactobacillus Bulgaricus, including Bificlobacterium sp.
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/065—Microorganisms
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/135—Bacteria or derivatives thereof, e.g. probiotics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2400/00—Lactic or propionic acid bacteria
- A23V2400/11—Lactobacillus
- A23V2400/145—Gasseri
Definitions
- the present invention relates to a lactic acid bacterium having an improving effect on gastritis, gastric ulcer, gastric acidity and reflux esophagitis, and a pharmaceutical composition and a food composition containing the lactic acid bacterium.
- the intestinal tract contains a diverse microbial flora consisting of a number of different bacterial species, including a high density of living bacteria, reaching concentrations of 10 11 to 10 12 cells / g of luminal contents.
- the role of the digestive tract's natural microbiota in health and disease is well known, including metabolic activity, nutritional effects on the intestinal epithelium and immune system, and protecting established hosts from invasion of foreign microorganisms. (Non-Patent Document 1).
- the stomach is not infected with Helicobacter pylori, there are only a few bacteria in humans.
- the gastric juice contains only a few bacteria, including Streptococcus, Lactobacillus and Veillonella, at about 10 2 to 10 3 / ml.
- these bacteria are transient from the oral cavity and throat and are not considered to be resident (Non-patent Documents 2 and 3).
- Such bacterial deficiency in the human stomach is likely due to high intraluminal acidity.
- H. pylori is well known as a pathogenic bacterium that causes peptic ulcer and cancer in the human stomach. From the beginning, Helicobacter bacteria have also been proposed to belong to human natural gastric microbiota (Non-patent Document 4). This hypothesis is supported by the fact that H. pylori was acquired early in childhood and continued to settle in the stomach for a number of decades thereafter. This creates a need to clarify the role of the stomach's natural microflora in the physiological development and function of the stomach. However, it is difficult to clarify its role by infection tests using H. pylori. This is because various virulence factors of H. pylori, such as CagA, vacuolating toxins, urease and its metabolites, induce chronic pathological inflammation in the stomach tissue, which is the natural origin of H. pylori. It obscures the physiological role of bacteria.
- Non-patent Document 5 a native microflora consisting mainly of Lactobacillus bacteria in the stomach of specific pathogen-free (SPF) mice. It was considered that Lactobacillus bacteria could settle in the stomach due to the lower acidity of the stomach of SPF mice. In addition, an unclear inflammation change occurred in the stomach of SPF mice.
- the present inventors found that the number of gastrin-producing cells in the stomach was significantly reduced when the Lactobacillus genus bacteria were given to sterile mice as live or dead bacteria. It came to complete.
- this invention relates to the following gastrin production inhibitors and food compositions containing the same.
- a gastrin production inhibitor comprising dead cells of Lactobacillus bacteria.
- a gastrin production inhibitor comprising dead cells of Lactobacillus bacteria and no live cells.
- a food composition comprising the gastrin production inhibitor according to any one of [1] to [4].
- the food composition according to the above [5] which is a fermented food by lactic acid bacteria.
- the food composition according to [6], wherein the fermented food by lactic acid bacteria is fermented milk.
- the food composition according to [7], wherein the fermented milk is yogurt.
- the gastrin production inhibitor of the present invention uses dead cells of Lactobacillus bacteria, it does not have a sterilizing action against H. pylori (for example, Patent Documents 1 and 2), but constitutes stomach tissue. It can work directly on cells and suppress gastric acid secretion. Furthermore, for example, for gastric hyperacidity after eradication of Helicobacter pylori, reflux esophagitis resulting therefrom, gastritis unrelated to Helicobacter pylori, gastric ulcer and reflux esophagitis, such as reflux esophagitis due to aging, etc. Can be expected.
- a new medicine or food for preventing and improving a series of symptoms such as heartburn and gastric pain, reflux esophagitis, esophageal cancer and the like based on excessive acidity without utilizing the anti-pylori action of lactic acid bacteria. Can do.
- gastritis caused by gastric acid and reflux esophagitis are a problem for nonsteroidal anti-inflammatory drug (NSAID) users.
- NSAID nonsteroidal anti-inflammatory drug
- PPI proton pump inhibitor
- the law is being taken.
- the period during which PPI can be administered is limited to a maximum of 8 weeks, and since the action point is a proton pump, there is a side effect that the expression of gastrin, a gastric acid secretion promoting hormone, is abnormally increased.
- the gastrin production inhibitor of the present invention directly reduces the amount of PPI used to suppress the secretion of gastrin on the cells constituting the gastric tissue, and suppresses the side effect of gastrin elevation after the end of PPI administration. It is expected that the gastrin production inhibitor of the present invention and PPI can effectively improve gastritis, gastric ulcer, reflux esophagitis and peracidosis due to excessive gastric acidity.
- the food composition containing the gastrin production inhibitor of the present invention actively contains dead cells of the genus Lactobacillus, which is completely different in composition from conventional food compositions. By suppressing it, it is possible to suppress gastric acid secretion.
- the gastrin production inhibitor of the present invention contains dead cells of bacteria belonging to the genus Lactobacillus.
- the gastrin production inhibitor of the present invention can also be used as a pharmaceutical or food additive.
- the gastrin production inhibitor of this invention contains the dead microbial cell of Lactobacillus (Lactobacillus) genus bacteria, and it is also possible not to contain a living microbial cell. Moreover, it may consist only of dead cells.
- Lactobacillus examples include Lactobacillus delbrueckii subsp. Burgalicus, Lactobacillus delbrueckii subsp. gasseri, Lactobacillus oris, Lactobacillus casei subsp. , One or more of the above examples may be used.
- Lactobacillus gasseri is preferable, and Lactobacillus gasseri OLL2716 (Accession No .: FERM BP-6999) (this strain is the National Institute of Advanced Industrial Science and Technology, National Institute of Advanced Industrial Science and Technology (Former Life Science Institute of the Ministry of International Trade and Industry) Institute of Engineering and Industrial Technology), 1st 6th East, 1-chome, Tsukuba City, Ibaraki, Japan 305-8666, Japan (former address: 1st-3rd East, 1-chome, Tsukuba, Japan 305-8856), 1999 (Deposited on May 24).
- FERM BP-6999 this strain is the National Institute of Advanced Industrial Science and Technology, National Institute of Advanced Industrial Science and Technology (Former Life Science Institute of the Ministry of International Trade and Industry) Institute of Engineering and Industrial Technology), 1st 6th East, 1-chome, Tsukuba City, Ibaraki, Japan 305-8666, Japan (former address: 1st-3rd East, 1-chome, Tsukuba, Japan 30
- the administration route is not particularly limited as long as dead cells of the genus Lactobacillus as an active ingredient act on the stomach as a result. It suppresses the production of gastrin in the administered individual and has an improvement effect on gastric hyperacidity, gastritis, gastric ulcer, reflux esophagitis and the like.
- Administration of the gastrin production inhibitor of the present invention includes oral or parenteral administration.
- oral administration or tube administration may be used.
- Oral administration is preferred from the viewpoint of convenience and safety.
- the dosage form is not particularly limited, and can be appropriately selected depending on the administration route. For example, it is a liquid, capsule, granule, pill, suspension, emulsion, powder, tablet, syrup, injection. And lozenges.
- Oral preparations can be made into various known dosage forms, such as granules, powders, tablets, pills, capsules, solutions, syrups, emulsions, suspensions, lozenges, and the like. can do.
- parenteral administration include administration in the form of injections.
- the gastrin production inhibitor of this invention can also be locally administered to the area
- Carriers that can be used in the pharmaceutical composition of the present invention include surfactants, excipients, coloring agents, flavoring agents, preservatives, stabilizers, buffers, suspending agents, isotonic agents, binders, and disintegrants.
- Lubricants, fluidity promoters, flavoring agents and the like are listed as pharmaceutically acceptable carriers, and other commonly used carriers can be used as appropriate.
- the concentration of the dead cells of the genus Lactobacillus is not particularly limited, but when used as a concentrate, 2 ⁇ 10 10 cells / g or more, When used as a dried product, it is preferably 1 ⁇ 10 11 pieces / g or more.
- the amount of dead cells of the genus Lactobacillus is not particularly limited, but can be appropriately adjusted according to the dosage form, symptoms, body weight, use and the like.
- the daily intake of the medicament of the present invention is not particularly limited, but can be appropriately adjusted according to age, symptoms, body weight, use and the like.
- 0.1 to 10,000 mg / kg body weight can be taken, preferably 1 to 2000 mg / kg body weight, more preferably 10 to 500 mg / kg body weight.
- the way of ingestion is not particularly limited, but can be appropriately changed, for example, from taking about 1 g of the preparation once a day to ingesting 10 g of the preparation 3 times a day. .
- daily ingestion for example, a person with a body weight of 60 kg ingests a 6 g stick of a powder preparation of 1 to 5 ⁇ 10 11 bacteria / g 1 to 3 times a day to be 100 to 300 mg / kg per day. Can be illustrated.
- the food composition of the present invention contains the gastrin production inhibitor according to the present invention.
- the food composition in the present invention is not particularly limited.
- the food may originally contain lactic acid bacteria or may not contain food. Further, it may be a liquid food (a liquid food having fluidity that can be swallowed by a patient or the like without chewing).
- the gastrin production inhibitor according to the present invention contains dead cells of Lactobacillus bacteria,
- the food composition of the present invention contains dead cells of one or more bacteria selected from Lactobacillus bacteria.
- Such a food composition suppresses gastrin production by an ingested individual and has an improvement effect on gastric hyperacidity, gastritis, gastric ulcer, reflux esophagitis and the like.
- the food composition of the present invention may further contain carbohydrates, proteins, lipids, vitamins, biologically essential trace metals (such as manganese sulfate, zinc sulfate, magnesium chloride, and potassium carbonate), fragrances, and other blends.
- saccharide examples include saccharides, processed starch (in addition to dextrin, soluble starch, British starch, oxidized starch, starch ester, starch ether, etc.), dietary fiber, and the like.
- protein examples include whole milk powder, skim milk powder, partially skimmed milk powder, casein, whey powder, whey protein, whey protein concentrate, whey protein isolate, ⁇ -casein, ⁇ -casein, ⁇ -casein, ⁇ -lactoglobulin , ⁇ -lactalbumin, lactoferrin, soy protein, egg protein, meat protein and other animal and vegetable proteins, hydrolysates thereof; butter, milk minerals, cream, whey, non-protein nitrogen, sialic acid, phospholipid, lactose, etc. And various milk-derived components.
- Examples of lipids include animal oils such as lard and fish oil, fractionated oils thereof, hydrogenated oils and transesterified oils; palm oil, safflower oil, corn oil, rapeseed oil, coconut oil, fractionated oils thereof, Examples include vegetable oils such as hydrogenated oils and transesterified oils.
- vitamins include vitamin A, carotene, vitamin B group, vitamin C, vitamin D group, vitamin E, vitamin K group, vitamin P, vitamin Q, niacin, nicotinic acid, pantothenic acid, biotin, inositol, choline.
- Examples of minerals include calcium, potassium, magnesium, sodium, copper, iron, manganese, zinc, and selenium.
- the food composition of the present invention may be a functional food, a food for specified health use, a food for specific use, a functional nutrition food, a health food, a food for nursing care, and a confectionery, lactic acid bacteria beverage, cheese, It may be a dairy product such as yogurt or a seasoning.
- the shape of the food and drink there is no limitation on the shape of the food and drink, and it can take any form of food or drink that can be distributed normally, such as solid, liquid, liquid food, jelly, tablet, granule, capsule, and various foods (milk, Soft drinks, fermented milk, yogurt, cheese, bread, biscuits, crackers, pizza crusts, formula milk, liquid foods, food for the sick, nutritional foods, frozen foods, processed foods and other commercial foods) .
- Manufacture of the said food / beverage products can be performed by those skilled in the art.
- the dead cell of the Lactobacillus genus bacteria concerning this invention can be added and used for the fermented food by lactic acid bacteria.
- fermented foods produced by lactic acid bacteria include fermented milk, kimchi, and pickles. Fermented milk is particularly preferable, and yogurt is particularly preferable.
- fermented foods produced by lactic acid bacteria live bacteria of the genus Lactobacillus grow exponentially with a growth curve, but the number of viable bacteria in the fermented foods is naturally determined from its suitable degree of fermentation.
- the amount of Lactobacillus bacteria contained in the final product is estimated to be about 1 ⁇ 10 10 per 100 g.
- 1 ⁇ Add about 10 8 to 5 ⁇ 10 13 , preferably 1 ⁇ 10 9 to 5 ⁇ 10 12 , particularly preferably about 5 ⁇ 10 10 to 5 ⁇ 10 11 dead cells, 1 ⁇ 10 10 to 5 ⁇ 10 13 , preferably 1 ⁇ 10 10 to 5 ⁇ 10 12 , particularly preferably about 1 ⁇ 10 11 .
- the cell concentration of dead Lactobacillus bacteria contained in the food composition of the present invention is not particularly limited, but when used as a concentrate, 2 ⁇ 10 10 cells / g or more is used as a dried product. In this case, it is preferable to set it to 3 ⁇ 10 11 pieces / g or more.
- the blending amount of dead bacteria of the genus Lactobacillus is not particularly limited, but can be appropriately adjusted according to the dosage form, symptoms, body weight, use, and the like.
- the daily intake of the food composition of the present invention is not particularly limited, but can be appropriately adjusted according to age, symptoms, body weight, use and the like. Typically, 0.1 to 30000 mg / kg body weight can be taken, preferably 0.1 to 20000 mg / kg body weight, more preferably 0.1 to 4000 mg / kg body weight.
- Test example Gastrin production suppression using dead cells of Lactobacillus sp.
- Lactobacillus gasseri OLL2716 (Meiji Dairies Co., Ltd.) was used as the bacterium.
- Lactobacillus bacteria were grown for 1 day in Difco TM MRS broth (Becton Dickinson). Heat treatment of Lactobacillus bacteria was performed by incubating the bacterial suspension at 100 ° C. for 10 minutes.
- mice Aseptic (germ-free, GF) BALB / c male mice were obtained from CLEA Japan. Littermate GF mice were reared using Trexler-type flexible film plastic isolators and fed sterilized feed and water.
- tissue sections were deparaffinized, boiled in a microwave oven at 98 ° C. for 15 minutes in 10 mM citrate buffer (pH 6.0), and PBS containing 5% normal goat serum for 15 minutes at room temperature. Blocked with. Sections were incubated with the primary antibody overnight at 4 ° C. and then incubated with a secondary antibody labeled with a fluorescent marker for 2 hours at room temperature. Finally, the sample was treated with DAPI (4,6-diamidino-2-phenylindole) and DABCO (1,4-diazobicyclo [2,2,2] octane). Slides were visualized with a microscope (Keyence BZ-9000) tuned for fluorescence imaging.
- DAPI 4,6-diamidino-2-phenylindole
- DABCO 1,4-diazobicyclo [2,2,2] octane
- Anti-gastrin antibody (rabbit polyclonal antibody, Dako) diluted 1: 300, control rabbit IgG (Dako) and control mouse IgG (Dako) were used as primary antibodies.
- Results were assessed statistically by Student's t test or one-way analysis of variance (ANOVA) as appropriate.
- a software program of SSPS version 16.0 (SSPS) or GraphPad Prism 5 (GraphPad Software) was used for data analysis.
- gastritis not caused by Helicobacter pylori can be achieved by directly acting on cells constituting the stomach tissue and suppressing gastric acid secretion without using the sterilizing action against Helicobacter pylori.
- it can be used as a pharmaceutical composition for improving gastric ulcer and reflux esophagitis, gastric hyperacidity after eradication of Helicobacter pylori, and the like.
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Abstract
Description
[1]ラクトバチルス属細菌の死菌体を含む、ガストリン産生抑制剤。
[2]ラクトバチルス属細菌の死菌体を含み、生菌体を含まない、ガストリン産生抑制剤。
[3]ラクトバチルス属細菌が、Lactobacillus gasseriである、前記[1]または[2]に記載のガストリン産生抑制剤。
[4]ラクトバチルス属細菌が、Lactobacillus gasseri OLL2716 (受託番号:FERM BP-6999)である、前記[1]または[2]に記載のガストリン産生抑制剤。
[5]前記[1]~[4]のいずれか一項に記載のガストリン産生抑制剤を含有する、食品組成物。
[6]乳酸菌による発酵食品である、前記[5]に記載の食品組成物。
[7]乳酸菌による発酵食品が、発酵乳である、前記[6]に記載の食品組成物。
[8]発酵乳が、ヨーグルトである、前記[7]に記載の食品組成物。
とくに本発明によれば、乳酸菌の抗ピロリ菌作用を利用しない胃酸過多に基づく胸焼け、胃痛等の一連の症状、逆流性食道炎、食道ガンなどの予防改善する新たな医薬または食品を提供することができる。
さらに本発明のガストリン産生抑制剤を含む食品組成物は、ラクトバチルス属細菌の死菌体を積極的に含有せしめるものであり、従来の食品組成物とは全く組成の異なるものであり、ガストリンを抑制することによって、胃酸分泌を抑制することなどが可能である。
本発明のガストリン産生抑制剤の投与には、経口的または非経口的に投与することが含まれる。例えば、経口投与や経管投与であってもよい。簡便かつ安全性の観点から、経口投与が好ましい。また剤型は、とくに限定されないが、投与経路に応じて適宜選択することができ、例えば、液剤、カプセル剤、顆粒剤、丸剤、懸濁剤、乳剤、散剤、錠剤、シロップ剤、注射剤、トローチ剤などが挙げられる。
非経口的な投与としては、注射剤などの形での投与を挙げることができる。また、本発明のガストリン産生抑制剤を、処置を施したい領域に局所的に投与することもできる。例えば、手術中の局所注入、カテーテルの使用により投与することも可能である。
本発明のガストリン抑制剤を医薬として用いる場合において、ラクトバチルス属細菌の死菌体の配合量は、とくに限定されないが、剤型、症状、体重、用途などに応じて適宜調整することができる。
本発明の医薬の一日当たりの摂取量は、とくに限定されないが、年齢、症状、体重、用途などに応じて適宜調整することができる。典型的には、0.1~10000mg/kg体重を摂取することができ、好ましくは1~2000mg/kg体重、さらに好ましくは10~500mg/kg体重を摂取することができる。また、摂取の仕方としては、とくに限定されないが、例えば、およそ1gの製剤を1日1本摂取することから、10gの製剤を一日3本摂取することなど、適宜変更することが可能である。1日の摂取例としては、例えば、体重60kgの人が1~5×1011細菌/gの粉末製剤の6gスティックを1日1~3回摂取し、1日当たり100~300mg/kgとすることが例示できる。
本発明における食品組成物は、とくに限定されない。例えば、元来、乳酸菌を含有する食品であっても、含有しない食品であってもよい。また、流動食(患者等が噛まずに飲み込めるような流動性を有する液状の食品)であってもよい。
本発明にかかるガストリン産生抑制剤が、ラクトバチルス属細菌の死菌体を含有することから、
本発明の食品組成物は、ラクトバチルス属細菌から選択される1種または2種以上の細菌の死菌体を含む。かかる食品組成物は、摂取個体のガストリン産生を抑制し、胃酸過多、胃炎、胃潰瘍、逆流性食道炎などに対して改善効果を奏する。
本発明の食品組成物はさらに、糖質、タンパク質、脂質、ビタミン類、生体必須微量金属(硫酸マンガン、硫酸亜鉛、塩化マグネシウム、炭酸カリウムなど)、香料やその他の配合物を含むことができる。
タンパク質としては、例えば全脂粉乳、脱脂粉乳、部分脱脂粉乳、カゼイン、ホエイ粉、ホエイタンパク質、ホエイタンパク質濃縮物、ホエイタンパク質分離物、α-カゼイン、β-カゼイン、κ-カゼイン、β-ラクトグロブリン、α-ラクトアルブミン、ラクトフェリン、大豆タンパク質、鶏卵タンパク質、肉タンパク質などの動植物性タンパク質、これら加水分解物;バター、乳性ミネラル、クリーム、ホエイ、非タンパク態窒素、シアル酸、リン脂質、乳糖などの各種乳由来成分などが挙げられる。
ビタミン類としては、例えば、ビタミンA、カロチン類、ビタミンB群、ビタミンC、ビタミンD群、ビタミンE、ビタミンK群、ビタミンP、ビタミンQ、ナイアシン、ニコチン酸、パントテン酸、ビオチン、イノシトール、コリン、葉酸などが挙げられ、ミネラル類としては、例えば、カルシウム、カリウム、マグネシウム、ナトリウム、銅、鉄、マンガン、亜鉛、セレンなどが挙げられる。
本発明の食品組成物において、ラクトバチルス属細菌の死菌体の配合量は、とくに限定されないが、剤型、症状、体重、用途などに応じて適宜調整することができる。
本発明の食品組成物の一日当たりの摂取量は、とくに限定されないが、年齢、症状、体重、用途などに応じて適宜調整することができる。典型的には、0.1~30000mg/kg体重を摂取することができ、好ましくは0.1~20000mg/kg体重、さらに好ましくは0.1~4000mg/kg体重を摂取することができる。
1.材料および方法
[細菌]
細菌は、Lactobacillus gasseri OLL2716(明治乳業株式会社)を用いた。
マウスに接種するために、ラクトバチルス属細菌は、Difco(商標)MRS broth(Becton Dickinson)において、1日間増殖させた。
ラクトバチルス属細菌の熱処理は、細菌懸濁液を100℃で10分間インキュベートして行った。
無菌(germ-free、GF)のBALB/c雄マウスを日本クレア株式会社より入手した。同腹のGFマウスは、Trexler型可撓性フィルムプラスチックアイソレーターを用い、滅菌した飼料および水を与えて飼育した。
死菌による処置として、1010CFUの熱処理した細菌(死菌)を、0.5mlのリン酸緩衝液(PBS)に懸濁し、毎日10日間、経胃で接種した。
最後の接種から10日後、胃を切り取り、免疫組織化学分析に用いた。
胃の組織病理学的分析のため、大弯に沿って切除した胃の半分を4%緩衝ホルマリンで固定し、パラフィンワックスに包埋し、2μmの切片に切り出した。次いで、標準の方法に従い、切片をヘマトキシリンおよびエオシンで染色した。胃の筋肉層の厚さは、分析用ソフトウェア(Olympus BP2-BSW)を用いて、垂直軸に沿って顕微鏡(Olympus AX80)で測定した。全部で10箇所の異なるポイントを測定し、標本の各領域の平均厚さを得た。矩形(150×200μm)における核の数を、胃の各領域の筋肉層において計数した。
結果は、適切に、Student's t検定または一元分散分析(ANOVA)よって統計学的に評価した。SSPS version 16.0(SSPS)またはGraphPad Prism 5(GraphPad Software)のソフトウェアプログラムをデータ分析に用いた。
無処置GFマウス、L. gasseri OLL2716定着ノトバイオートマウス、PBS処置GFマウス、熱処理したL. gasseri OLL2716の死菌体を投与したGFマウスの夫々について、胃幽門洞におけるガストリン産生細胞数を計測した。その結果は次表のとおりであった。
熱処理したラクトバチルス属細菌(死菌体)を経口投与したGFマウスでは、生菌によって誘導されたのと同程度にガストリン産生細胞の数の減少が認められた。かかる有意な減少は、Lactobacillus gasseri OLL2716の場合も見られた。
さらに、例えば、乳酸菌による発酵食品などにおいては、その食品の性質上、一定量以上の生菌を含有せしめることができないが、本発明のガストリン抑制剤によれば、死菌体を用いることから、既存の食品にない菌体量(生菌および死菌)を含む食品組成物として用いることができる。
Claims (8)
- ラクトバチルス属細菌の死菌体を含む、ガストリン産生抑制剤。
- ラクトバチルス属細菌の死菌体を含み、生菌体を含まない、ガストリン産生抑制剤。
- ラクトバチルス属細菌が、Lactobacillus gasseriである、請求項1または2に記載のガストリン産生抑制剤。
- ラクトバチルス属細菌が、Lactobacillus gasseri OLL2716 (受託番号:FERM BP-6999)である、請求項1または2に記載のガストリン産生抑制剤。
- 請求項1~4のいずれか一項に記載のガストリン産生抑制剤を含有する、食品組成物。
- 乳酸菌による発酵食品である、請求項5に記載の食品組成物。
- 乳酸菌による発酵食品が、発酵乳である、請求項6に記載の食品組成物。
- 発酵乳が、ヨーグルトである、請求項7に記載の食品組成物。
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| CN201280003716.6A CN103260632B (zh) | 2011-01-25 | 2012-01-24 | 胃泌素生成抑制剂及含有该胃泌素生成抑制剂的食品组合物 |
| JP2012554806A JP6002582B2 (ja) | 2011-01-25 | 2012-01-24 | ガストリン産生抑制剤およびそれを含有する食品組成物 |
| SG2013056262A SG192109A1 (en) | 2011-01-25 | 2012-01-24 | Gastrin production inhibitor and food composition comprising same |
| HK13112118.7A HK1184684B (en) | 2011-01-25 | 2012-01-24 | Gastrin production inhibitor and food composition comprising same |
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| JP2011012815 | 2011-01-25 |
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| WO2012102277A1 true WO2012102277A1 (ja) | 2012-08-02 |
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| JP (1) | JP6002582B2 (ja) |
| CN (1) | CN103260632B (ja) |
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| WO (1) | WO2012102277A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018012578A1 (ja) * | 2016-07-14 | 2018-01-18 | 株式会社明治 | グレリン分泌促進剤 |
| KR101955275B1 (ko) * | 2018-11-15 | 2019-03-08 | 주식회사한국야쿠르트 | 식도 손상을 예방하는 효능을 갖는 락토바실러스 파라카제이 hy7013 및 이를 유효성분으로 함유하는 제품 |
| JP2019048849A (ja) * | 2018-11-14 | 2019-03-28 | 株式会社明治 | グレリン分泌促進剤 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102895380B1 (ko) * | 2020-10-15 | 2025-12-03 | 주식회사 엘지화학 | 세리아 분말의 제조방법 및 세리아 분말 |
| CN116940247A (zh) * | 2021-03-08 | 2023-10-24 | 株式会社明治 | 胃运动功能调整用组合物 |
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| CN115918726A (zh) * | 2016-07-14 | 2023-04-07 | 株式会社明治 | 饥饿素分泌促进剂 |
| JP2019048849A (ja) * | 2018-11-14 | 2019-03-28 | 株式会社明治 | グレリン分泌促進剤 |
| KR101955275B1 (ko) * | 2018-11-15 | 2019-03-08 | 주식회사한국야쿠르트 | 식도 손상을 예방하는 효능을 갖는 락토바실러스 파라카제이 hy7013 및 이를 유효성분으로 함유하는 제품 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6002582B2 (ja) | 2016-10-05 |
| SG10201600578UA (en) | 2016-02-26 |
| SG192109A1 (en) | 2013-08-30 |
| JPWO2012102277A1 (ja) | 2014-06-30 |
| CN103260632A (zh) | 2013-08-21 |
| CN103260632B (zh) | 2016-03-02 |
| HK1184684A1 (zh) | 2014-01-30 |
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