JP2021153461A - Anti-stress composition - Google Patents
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Abstract
Description
本発明は、ラクトコッカス属の乳酸菌を含有する抗ストレス組成物に関する。 The present invention relates to an anti-stress composition containing a lactic acid bacterium of the genus Lactococcus.
乳酸菌は、代謝によって乳酸を産生する細菌類の総称であり、その形状によって乳酸桿菌と乳酸球菌に分類される。ラクトコッカス属は、生乳やチーズなどの発酵によく用いられている通性嫌気性の乳酸球菌に属する(非特許文献1参照)。ラクトコッカス属の乳酸菌摂取による健康へ与える効果として、例えば免疫賦活作用(例えば、特許文献1および2参照)、疲労回復もしくは疲労蓄積予防作用(特許文献3参照)などが報告されている。一方、現代社会において問題視されているストレスやうつ症状に対するラクトコッカス属の有効性については不明な点が多い。 Lactobacillus is a general term for bacteria that produce lactic acid by metabolism, and is classified into lactic acid bacilli and lactic acid cocci according to their shape. The genus Lactococcus belongs to a facultative anaerobic lactic acid bacterium that is often used for fermentation of raw milk and cheese (see Non-Patent Document 1). As effects on health by ingestion of lactic acid bacteria of the genus Lactococcus, for example, immunostimulatory action (see, for example, Patent Documents 1 and 2), fatigue recovery or fatigue accumulation prevention action (see Patent Document 3) and the like have been reported. On the other hand, there are many unclear points about the effectiveness of Lactococcus for stress and depressive symptoms, which are regarded as problems in modern society.
脳と腸との相互作用は脳腸相関とも呼ばれ、液性因子(ホルモンやサイトカインなど)や自律神経系の経路を介して、相互に情報伝達を行っていると考えられている。これまでの研究により、生体における腸内細菌叢の有無でストレス応答が変化することから、腸内細菌とストレスには何らかの関連性があると考えられている(非特許文献2参照)。また、乳発酵物を有効成分として含有するストレス由来の皮膚血流低下改善用組成物が開示されている(特許文献4参照)。しかしながら、ラクトコッカス属の乳酸菌自体が抗ストレス作用を有することは全く知られていない。 The interaction between the brain and the intestine is also called the gut-brain axis, and it is thought that information is transmitted to each other via humoral factors (hormones, cytokines, etc.) and the pathways of the autonomic nervous system. According to previous studies, the stress response changes depending on the presence or absence of the intestinal bacterial flora in the living body, and thus it is considered that there is some relationship between the intestinal bacteria and stress (see Non-Patent Document 2). Further, a composition for improving a decrease in skin blood flow derived from stress containing a fermented milk product as an active ingredient is disclosed (see Patent Document 4). However, it is not known at all that Lactococcus lactic acid bacteria themselves have an anti-stress effect.
本発明者らは、ラクトコッカス属の乳酸菌を含有する組成物を対象に投与することにより抗ストレス効果を奏することが分かった。本発明はこれらの知見に基づくものである。 The present inventors have found that administration of a composition containing a lactic acid bacterium of the genus Lactococcus to a subject exerts an anti-stress effect. The present invention is based on these findings.
従って、本発明は、ラクトコッカス属の乳酸菌を含有する抗ストレス組成物を提供する。 Therefore, the present invention provides an anti-stress composition containing a lactic acid bacterium of the genus Lactococcus.
本発明によれば以下の発明が提供される。
(1)ラクトコッカス属の乳酸菌を含有する、抗ストレス組成物。
(2)ラクトコッカス属の乳酸菌が死菌体である、(1)に記載の抗ストレス組成物。
(3)ラクトコッカス属の乳酸菌が加熱死菌体である、(1)に記載の抗ストレス組成物。
(4)ラクトコッカス属の乳酸菌が、ラクトコッカス・ラクティス・サブスピーシーズ・ラクティスNFRCL−11(Lactococcus lactis subsp. lactis NFRCL−11)である、(1)〜(3)のいずれかに記載の抗ストレス組成物。
(5)ストレス低減のために用いられる、(1)〜(4)のいずれかに記載の抗ストレス組成物。
(6)セロトニンの分泌を促進するために用いられる、(1)〜(5)のいずれかに記載の抗ストレス組成物。
(7)コルチゾールまたはコルチコステロン分泌の上昇を抑制するために用いられる、(1)〜(5)のいずれかに記載の抗ストレス組成物。
(8)抗ストレス食品組成物である、(1)〜(7)のいずれかに記載の抗ストレス組成物。
(9)ラクトコッカス属の乳酸菌を含有する、抗ストレス剤。
(10)ラクトコッカス属の乳酸菌を、対象に摂取させることを含んでなる、ストレス低減方法(但し、ヒトに対する医療行為を除く)。
According to the present invention, the following inventions are provided.
(1) An anti-stress composition containing a lactic acid bacterium of the genus Lactococcus.
(2) The anti-stress composition according to (1), wherein the lactic acid bacterium of the genus Lactococcus is a dead cell.
(3) The anti-stress composition according to (1), wherein the lactic acid bacterium of the genus Lactococcus is a heat-killed cell.
(4) The anti-stress according to any one of (1) to (3), wherein the lactic acid bacterium of the genus Lactococcus is Lactococcus lactis subspecis lactis NFRCL-11. Composition.
(5) The anti-stress composition according to any one of (1) to (4), which is used for stress reduction.
(6) The anti-stress composition according to any one of (1) to (5), which is used to promote the secretion of serotonin.
(7) The anti-stress composition according to any one of (1) to (5), which is used to suppress an increase in cortisol or corticosterone secretion.
(8) The anti-stress composition according to any one of (1) to (7), which is an anti-stress food composition.
(9) An anti-stress agent containing a lactic acid bacterium belonging to the genus Lactococcus.
(10) A stress-reducing method (excluding medical practice for humans), which comprises ingesting a lactic acid bacterium of the genus Lactococcus to a subject.
本発明の組成物を用いることにより、抗ストレス効果を奏する点で有利である。 The use of the composition of the present invention is advantageous in that it exerts an anti-stress effect.
[微生物の寄託]
ラクトコッカス・ラクティス・サブスピーシーズ・ラクティスNFRCL−11株(Lactococcus lactis subsp.lactis NFRCL-11)は、2020年2月26日付け(寄託日)で独立行政法人製品評価技術基盤機構 特許微生物寄託センターに、受託番号NITE P−03141として寄託されている。
[Deposit of microorganisms]
Lactococcus lactis subsp.lactis NFRCL-11 strain (Lactococcus lactis subsp.lactis NFRCL-11) became the Patent Microorganisms Depositary Center of the National Institute of Technology and Evaluation on February 26, 2020 (deposit date). , Deposited as accession number NITE P-03141.
本発明の抗ストレス組成物は、ラクトコッカス属の乳酸菌を含有するものであり、有効成分として含んでいてもよい。本発明の組成物に含有するラクトコッカス属の乳酸菌は、生菌体でも死菌体でもいずれでもよいが、死菌体であることが好ましく、加熱死菌体であることがより好ましく、加熱死菌体粉末であることがさらに好ましい。加熱死菌体は、例えば、生菌体を95℃以上で10分間程度加熱して得ることができる。 The anti-stress composition of the present invention contains a lactic acid bacterium of the genus Lactococcus and may be contained as an active ingredient. The lactic acid bacterium of the genus Lactococcus contained in the composition of the present invention may be either a live cell or a dead cell, but is preferably a dead cell, more preferably a heat-killed cell, and heat-killed. It is more preferably a cell powder. The heat-killed cells can be obtained, for example, by heating the viable cells at 95 ° C. or higher for about 10 minutes.
本発明の組成物に含有するラクトコッカス属の乳酸菌は、特に限定されるものではないが、Lactococcus lactis subsp.lactis(ラクトコッカス・ラクティス・サブスピーシーズ・ラクティス)、Lactococcus lactis subsp. cremoris、およびLactococcus lactis subsp. hordniaeなどが挙げられ、これらの中でもLactococcus lactis subsp.lactis(ラクトコッカス・ラクティス・サブスピーシーズ・ラクティス)が好ましい。 The lactic acid bacteria of the genus Lactococcus contained in the composition of the present invention are not particularly limited, but are Lactococcus lactis subsp.lactis (Lactococcus lactis subsp. Cremoris), Lactococcus lactis subsp. Cremoris, and Lactococcus lactis. Subsp. Hordniae and the like are mentioned, and among these, Lactococcus lactis subsp.lactis (Lactococcus lactis subspice lactis) is preferable.
本発明の組成物にLactococcus lactis subsp.lactis(ラクトコッカス・ラクティス・サブスピーシーズ・ラクティス)が含まれる場合、Lactococcus lactis subsp.lactis(ラクトコッカス・ラクティス・サブスピーシーズ・ラクティス)であれば特に限定されるものではないが、Lactococcus lactis subsp.lactis NBRC12007、Lactococcus lactis subsp.lactis NFRC3、Lactococcus lactis subsp.lactis NFRC4、Lactococcus lactis subsp.lactis NFRC7、Lactococcus lactis subsp.lactis NFRC9、Lactococcus lactis subsp.lactis NFRC10、またはLactococcus lactis subsp.lactis NFRC11が好ましく、Lactococcus lactis subsp.lactis NBRC12007、Lactococcus lactis subsp.lactis NFRC10、またはLactococcus lactis subsp.lactis NFRC11がより好ましく、Lactococcus lactis subsp.lactis NFRC11が特に好ましい。 When the composition of the present invention contains Lactococcus lactis subsp.lactis (Lactococcus lactis subsp.lactis), it is particularly limited as long as it is Lactococcus lactis subsp.lactis (Lactococcus lactis subsp.lactis). Lactococcus lactis subsp.lactis NBRC12007, Lactococcus lactis subsp.lactis NFRC3, Lactococcus lactis subsp.lactis NFRC4, Lactococcus lactis subsp.lactis NFRC7, Lactococcus lactis subsp.lactis NFRC9 subsp.lactis NFRC11 is preferred, Lactococcus lactis subsp.lactis NBRC12007, Lactococcus lactis subsp.lactis NFRC10, or Lactococcus lactis subsp.lactis NFRC11 is more preferred, and Lactococcus lactis subsp.lactis NFRC11 is particularly preferred.
本発明において、「ストレス」とは、種々の外部刺激が負担として働くとき、心身に生じる機能変化を意味し、「抗ストレス」とはこの機能変化を起こさせないことを意味する。「抗ストレス」とは、種々の外部刺激が負担として働いて心身に機能変化が生じた後にその機能変化を元の状態に戻すもしくは近づけること、種々の外部刺激が負担として働いても心身の機能変化が生じないもしくは生じにくくすること、またはそもそも種々の外部刺激が心身の負担として働かないもしくは働きにくくすることなどを意味する。本明細書において、「ストレス低減」とは、種々の外部刺激が負担として働いても心身の機能変化が生じないもしくは生じにくくすることを意味する。本発明の好ましい態様によれば、ラクトコッカス属の乳酸菌を含有する、ストレス低減のために用いられる抗ストレス組成物である。本発明のより好ましい態様によれば、急性ストレス低減のために用いられる抗ストレス組成物である。ここで、急性ストレスとは、短期的な外部刺激によって心身に生じる機能変化であり、例えば外部刺激が継続的もしくは断続的に1日以内負荷されること、好ましくは1時間以内に負荷されること、より好ましくは10分以内に負荷されることに起因するものを意味する。急性ストレスの例としては、筆記テスト、朝の満員電車、長時間残業のストレスなどの比較的短期間のストレスが挙げられる。一方、ここで、慢性ストレスとは、長期的な外部刺激によって心身に生じる機能変化であり、例えば、外部刺激が継続的もしくは断続的に1日より長期にわたり負荷されることに起因するものを意味する。慢性ストレスの例としては、学校や勤務先での比較的長期間の人間関係のあつれきなどといった長期間持続するストレスが挙げられる。また、本発明のより好ましい別の態様によれば、精神的および/または身体的な外部刺激によるストレス低減のために用いられる抗ストレス組成物である。ここで、ストレスを生じさせる要因には、精神的(人間関係のあつれき、過密環境など)、身体的(長時間残業、過度の運動など)、物理的(紫外線、騒音、温熱環境など)、化学的(ホルムアルデヒドなどの化学物質)、生物学的(ウイルス、細菌、寄生虫)な外部刺激などが挙げられるが、本発明の好ましい態様によれば、本発明の組成物は、これらの中でも特に精神的および/または身体的な外部刺激によるストレスをより低減することができる。なお、下記本願の実施例における強制水泳試験は精神的および身体的な混合刺激であると考えられる。 In the present invention, "stress" means a functional change that occurs in the mind and body when various external stimuli act as a burden, and "anti-stress" means that this functional change is not caused. "Anti-stress" means that after various external stimuli work as a burden and a functional change occurs in the mind and body, the functional change is returned to or close to the original state, and even if various external stimuli work as a burden, the mental and physical functions It means that changes do not occur or are difficult to occur, or that various external stimuli do not work or are difficult to work as a physical and mental burden. As used herein, the term "stress reduction" means that even if various external stimuli act as burdens, mental and physical functional changes do not occur or are less likely to occur. According to a preferred embodiment of the present invention, it is an anti-stress composition used for stress reduction, which contains a lactic acid bacterium of the genus Lactococcus. According to a more preferred embodiment of the present invention, it is an anti-stress composition used for reducing acute stress. Here, the acute stress is a functional change caused in the mind and body by a short-term external stimulus, for example, the external stimulus is continuously or intermittently loaded within one day, preferably within one hour. , More preferably due to being loaded within 10 minutes. Examples of acute stress include relatively short-term stress such as written tests, crowded trains in the morning, and stress of long overtime. On the other hand, here, chronic stress is a functional change caused in the mind and body by a long-term external stimulus, and means, for example, a result of the external stimulus being continuously or intermittently applied for a longer period than one day. do. Examples of chronic stress include long-lasting stress, such as relatively long-term relationships at school or work. Also, according to another more preferred embodiment of the present invention, it is an anti-stress composition used for reducing stress due to mental and / or physical external stimuli. Here, the factors that cause stress include mental (human relations, overcrowded environment, etc.), physical (long overtime, excessive exercise, etc.), physical (ultraviolet rays, noise, thermal environment, etc.), Chemical (chemical substances such as formaldehyde), biological (viruses, bacteria, parasites) external stimuli and the like can be mentioned, and according to a preferred embodiment of the present invention, the composition of the present invention is particularly among these. The stress caused by external mental and / or physical stimuli can be further reduced. The forced swimming test in the examples of the present application below is considered to be a mixed mental and physical stimulus.
本発明のより好ましい態様によれば、ラクトコッカス属の乳酸菌を含有する、セロトニンの分泌を促進するために用いられる抗ストレス組成物である。ここで、セロトニンは、生理活性アミンの一種で、生体内でトリプトファンから合成され、脳、胃腸、血液中などに多く含まれ、脳の神経伝達などに作用するとともに、精神を安定させる作用もある。すなわち、セロトニンは、種々の外部刺激が負担として働いても心身の機能変化が生じないもしくは生じにくくすることができる。 According to a more preferred embodiment of the present invention, it is an anti-stress composition containing a lactic acid bacterium of the genus Lactococcus and used for promoting the secretion of serotonin. Here, serotonin is a kind of bioactive amine, which is synthesized from tryptophan in the living body, is contained in a large amount in the brain, gastrointestinal tract, blood, etc., and acts on nerve transmission in the brain and also has an effect of stabilizing the mind. .. That is, serotonin can prevent or prevent changes in mental and physical functions even when various external stimuli act as burdens.
本発明のさらに好ましい態様によれば、ラクトコッカス属の乳酸菌を含有する、コルチゾールまたはコルチコステロン分泌の上昇を抑制するために用いられる抗ストレス組成物である。ここで、コルチゾールおよびコルチコステロンは、副腎皮質ホルモンである糖質コルチコイドの一種で、精神の安定に密接に関連するホルモンであり、コルチゾールはヒトなどの霊長類においてみられるホルモンであり、コルチコステロンはラットやマウスなどの齧歯類においてみられるホルモンである。 According to a more preferred embodiment of the present invention, it is an anti-stress composition containing a lactic acid bacterium of the genus Lactococcus and used for suppressing an increase in cortisol or corticosterone secretion. Here, cortisol and corticosterone are a type of glucocorticoid, which is a corticosteroid, and are hormones closely related to mental stability. Cortisol is a hormone found in primates such as humans, and corticosterone. Is a hormone found in rodents such as rats and mice.
本発明の組成物中のラクトコッカス属の乳酸菌の含有量は、特に限定されるものではないが、例えば、本発明の組成物中に1×109個以上含まれ、好ましくは1×109〜1×1012個含まれ、より好ましくは1×109〜1×1011個含まれ、さらに好ましくは1×109〜1×1010個含まれ、特に好ましくは1×109〜5×109個含まれる。これらの含有量は、加熱処理した死菌体粉末を含有させたときの含有量であってもよい。 The content of Lactococcus lactic acid bacteria in the composition of the present invention is not particularly limited, but for example, 1 × 10 9 or more are contained in the composition of the present invention, preferably 1 × 10 9. ~ 1 × 10 12 pieces, more preferably 1 × 10 9 ~ 1 × 10 11 pieces, further preferably 1 × 10 9 ~ 1 × 10 10 pieces, particularly preferably 1 × 10 9 ~ 5 × 10 9 pieces are included. These contents may be the contents when the heat-treated killed cell powder is contained.
本発明の組成物は、ラクトコッカス属の乳酸菌単独、または他の成分と混合して使用することもできる。他の成分としては、例えば、γ-アミノ酪酸(GABA)やテアニンのようなアミノ酸や、ユビキノール(還元型コエンザイムQ10)のような抗酸化物質などが挙げられる。 The composition of the present invention can be used alone or in combination with other components of Lactococcus lactic acid bacteria. Examples of other components include amino acids such as γ-aminobutyric acid (GABA) and theanine, and antioxidants such as ubiquinol (reduced coenzyme Q10).
本発明の別の好ましい態様によれば、ラクトコッカス属の乳酸菌を含有する、抗ストレス食品組成物が提供される。ラクトコッカス属の乳酸菌を含有する組成物を食品に含有させて、食品組成物として提供することもできる。本発明の組成物を含有させる食品としては、特に限定されるものではないが、例えば、サプリメント、飲料、発酵食品、ご飯類、パン、麺類、または菓子などが挙げられる。 According to another preferred embodiment of the present invention, an anti-stress food composition containing a lactic acid bacterium of the genus Lactococcus is provided. A composition containing a lactic acid bacterium of the genus Lactococcus may be contained in a food and provided as a food composition. The food containing the composition of the present invention is not particularly limited, and examples thereof include supplements, beverages, fermented foods, rice, bread, noodles, and confectionery.
本発明の別の好ましい態様によれば、ラクトコッカス属の乳酸菌を含有する、抗ストレス剤が提供される。本発明の抗ストレス剤には、ラクトコッカス属の乳酸菌を有効成分として含有していてもよい。 According to another preferred embodiment of the present invention, an anti-stress agent containing a lactic acid bacterium of the genus Lactococcus is provided. The anti-stress agent of the present invention may contain a lactic acid bacterium of the genus Lactococcus as an active ingredient.
本発明の別の好ましい態様によれば、ラクトコッカス属の乳酸菌を含有する、抗ストレス医薬組成物(医薬品)が提供される。医薬品(医薬組成物)とは、製剤化のために許容されうる添加剤を併用して、常法に従って、経口製剤または非経口製剤として調製したものである。医薬品が経口製剤の場合には、錠剤、散剤、細粒剤、顆粒剤、カプセル剤、丸剤、徐放剤などの固形製剤、溶液、懸濁液、乳濁液などの液状製剤の形態をとることができる。なお、患者への摂取(投与)の簡易性の点からは、医薬品では、経口製剤であることが好ましい。ここで、製剤化のために許容されうる添加剤には、例えば、賦形剤、安定剤、防腐剤、湿潤剤、乳化剤、滑沢剤、甘味料、着色料、香料、緩衝剤、酸化防止剤、pH調整剤などが挙げられる。 According to another preferred embodiment of the present invention, an anti-stress pharmaceutical composition (pharmaceutical product) containing a lactic acid bacterium of the genus Lactococcus is provided. A pharmaceutical product (pharmaceutical composition) is prepared as an oral preparation or a parenteral preparation according to a conventional method by using an additive that is acceptable for formulation in combination. When the drug is an oral preparation, the form of a solid preparation such as tablets, powders, fine granules, granules, capsules, pills and sustained-release agents, and liquid preparations such as solutions, suspensions and emulsions is used. Can be taken. From the viewpoint of simplicity of ingestion (administration) to patients, oral preparations are preferable as pharmaceuticals. Here, additives that are acceptable for formulation include, for example, excipients, stabilizers, preservatives, wetting agents, emulsifiers, lubricants, sweeteners, colorants, flavors, buffers, antioxidants. Examples include agents and pH adjusters.
本発明の別の態様によれば、ラクトコッカス属の乳酸菌を、対象(好ましくは、抗ストレスが必要な対象)に摂取させることを含んでなる、ストレス低減方法が提供される。ラクトコッカス属の乳酸菌の対象への摂取は単回でも複数回でもよいが、単回であっても本発明の効果を奏することができる点で有利である。本発明の好ましい態様によれば、ラクトコッカス属の乳酸菌を、対象(好ましくは、抗ストレスが必要な対象)に摂取させることを含んでなる、ストレス低減方法(ヒトに対する医療行為を除く)が提供される。本明細書において、「ヒトに対する医療行為」とは、医師等の処方を必要として、ヒトに対して医薬品を摂取させる(投与する)行為などを意味する。対象には、ヒト以外の動物(馬、牛などの家畜、犬、猫などの愛玩動物、動物園などで飼育されている鑑賞動物など)も包含される。 According to another aspect of the present invention, there is provided a stress reducing method comprising feeding a subject (preferably a subject in need of anti-stress) a lactic acid bacterium of the genus Lactococcus. Lactococcus lactic acid bacteria may be ingested once or multiple times, but it is advantageous in that the effects of the present invention can be achieved even if the ingestion is single times. According to a preferred embodiment of the present invention, there is provided a stress reduction method (excluding medical practice for humans) comprising feeding a subject (preferably a subject in need of anti-stress) a lactic acid bacterium of the genus Lactococcus. Will be done. As used herein, the term "medical practice for humans" means an act of ingesting (administering) a drug to a human, requiring a prescription from a doctor or the like. The target also includes animals other than humans (livestock such as horses and cows, pet animals such as dogs and cats, and ornamental animals bred in zoos and the like).
本発明の別の好ましい態様によれば、ラクトコッカス属の乳酸菌を、対象(好ましくは、抗ストレスが必要な対象)に摂取させることを含んでなる、セロトニン分泌促進方法が提供される。本発明の別のより好ましい態様によれば、ラクトコッカス属の乳酸菌を、対象(好ましくは、抗ストレスが必要な対象)に摂取させることを含んでなる、セロトニン分泌促進方法(ヒトに対する医療行為を除く)が提供される。 According to another preferred embodiment of the present invention, there is provided a method for promoting serotonin secretion, which comprises ingesting a lactic acid bacterium of the genus Lactococcus to a subject (preferably a subject in need of anti-stress). According to another more preferred embodiment of the present invention, a method for promoting serotonin secretion (medical practice for humans) comprising feeding a subject (preferably a subject in need of anti-stress) a lactic acid bacterium of the genus Lactococcus. Except) is provided.
本発明の別の好ましい態様によれば、ラクトコッカス属の乳酸菌を、対象(好ましくは、抗ストレスが必要な対象)に摂取させることを含んでなる、コルチゾールまたはコルチコステロン分泌上昇抑制方法が提供される。本発明の別のより好ましい態様によれば、ラクトコッカス属の乳酸菌を、対象(好ましくは、抗ストレスが必要な対象)に摂取させることを含んでなる、コルチゾールまたはコルチコステロン分泌上昇抑制方法(ヒトに対する医療行為を除く)が提供される。 According to another preferred embodiment of the present invention, there is provided a method for suppressing an increase in cortisol or corticosterone secretion, which comprises ingesting a lactic acid bacterium of the genus Lactococcus to a subject (preferably a subject in need of anti-stress). Will be done. According to another more preferred embodiment of the present invention, a method for suppressing an increase in cortisol or corticosterone secretion, which comprises ingesting a lactic acid bacterium of the genus Lactococcus to a subject (preferably a subject in need of anti-stress). (Excluding medical practice for humans) is provided.
本発明の別の態様によれば、抗ストレスのための食品組成物または医薬組成物の製造に用いられるラクトコッカス属の乳酸菌の使用が提供される。 According to another aspect of the present invention, the use of Lactococcus lactic acid bacteria used in the production of food compositions or pharmaceutical compositions for anti-stress is provided.
本発明の別の態様によれば、抗ストレスのためのラクトコッカス属の乳酸菌の使用が提供される。 According to another aspect of the invention, the use of Lactococcus lactic acid bacteria for anti-stress is provided.
本発明の別の態様によれば、抗ストレスのためのラクトコッカス属の乳酸菌が提供される。 According to another aspect of the invention, a lactic acid bacterium of the genus Lactococcus for anti-stress is provided.
本発明の抗ストレス剤や、抗ストレス医薬組成物におけるラクトコッカス属の乳酸菌等は、本発明の組成物と同じであってもよい。 The anti-stress agent of the present invention, lactic acid bacteria of the genus Lactococcus in the anti-stress pharmaceutical composition, and the like may be the same as the composition of the present invention.
以下、実施例により本発明をより具体的に説明するが、本発明の技術的範囲はこれらに限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to Examples, but the technical scope of the present invention is not limited thereto.
試験例1:乳酸菌のセロトニン(5−HT)分泌作用の評価
培養細胞として、RIN−14B細胞(腸管分泌細胞様の培養細胞)(ATCC(American Type Culture Collection)から入手)を用いた。また、乳酸菌として、新潟県農業総合研究所食品研究センター保有菌株(NFRC株)を6株と、独立行政法人製品評価技術基盤機構保有菌株(NBRC株)を5株との合計11菌株を事前に95℃以上で10分間加熱処理した死菌体粉末を以下の試験で用いた。試験に使用した乳酸菌の11菌株は下記表1および図1に記載の通りである。
Test Example 1: use as a lactic acid bacteria of serotonin (5-HT) Evaluation cultured cells Secretion, RIN-14B cells (cell culture intestinal secretory cell-like) (obtained from ATCC (A merican T ype C ulture C ollection)) board. In addition, as lactic acid bacteria, a total of 11 strains, including 6 strains owned by the Food Research Center of the Niigata Prefectural Agricultural Research Institute (NFRC strain) and 5 strains owned by the Independent Administrative Institution Product Evaluation Technology Infrastructure Organization (NBRC strain), were prepared in advance. Killed cell powders heat-treated at 95 ° C. or higher for 10 minutes were used in the following tests. The 11 strains of lactic acid bacteria used in the test are as shown in Table 1 and FIG. 1 below.
細胞培養プレートの各ウエルにRIN−14B細胞を2×105cell/wellとなるように播種し、播種後に乳酸菌の死菌体粉末を100μg/mLとなるように添加した。当該乳酸菌の死菌体粉末を添加しないものをコントロール(Control)とした。死菌体粉末の添加後に、インキュベータで37℃、5%CO2で1時間培養した。培養後にELISAキット(Enzo社製)を用いて、ELISA法により細胞上清中に分泌されたセロトニン濃度を測定し、Controlと比較した。その結果を、下記表1および図1に示す。 RIN-14B cells were seeded in each well of the cell culture plate so as to be 2 × 10 5 cell / well, and after seeding, killed cell powder of lactic acid bacteria was added so as to be 100 μg / mL. The one to which the killed cell powder of the lactic acid bacterium was not added was defined as Control. After the addition of the killed cell powder, the cells were cultured in an incubator at 37 ° C. and 5% CO 2 for 1 hour. After culturing, the concentration of serotonin secreted into the cell supernatant was measured by the ELISA method using an ELISA kit (manufactured by Enzo), and compared with Control. The results are shown in Table 1 and FIG. 1 below.
表1および図1の結果から、Lactococcus lactis subsp. Lactis NBRC12007、Lactococcus lactis subsp. Lactis NFRC3、Lactococcus lactis subsp. Lactis NFRC4、Lactococcus lactis subsp. Lactis NFRC7、Lactococcus lactis subsp. Lactis NFRC9、Lactococcus lactis subsp. Lactis NFRC10、およびLactococcus lactis subsp. Lactis NFRC11はセロトニン量比が1.2より高くセロトニンの分泌量が多いことから抗ストレス効果が高く、Lactococcus lactis subsp. Lactis NBRC12007、Lactococcus lactis subsp. Lactis NFRC10、およびLactococcus lactis subsp. Lactis NFRC11はセロトニン量比が2.0より高くセロトニンの分泌量が多いことから抗ストレス効果がより高く、Lactococcus lactis subsp. Lactis NFRC11はセロトニン量比が3.0より高くセロトニンの分泌量が多いことから抗ストレス効果が特に高いことが分かった。 From the results of Table 1 and FIG. 1, Lactococcus lactis subsp. Lactis NBRC12007, Lactococcus lactis subsp. Lactis NFRC3, Lactococcus lactis subsp. Lactis NFRC4, Lactococcus lactis subsp. Lactis NFRC7, Lactococcus lactis subsp. Lactis NFRC9, Lactococcus lactis subsp. Lactis NFRC10, and Lactococcus lactis subsp. Lactis NFRC11 has a high anti-stress effect because the serotonin amount ratio is higher than 1.2 and the amount of serotonin secreted is large, and Lactococcus lactis subsp. Lactis NBRC12007, Lactococcus lactis subsp. Lactis NFRC10, and Lactococcus lactis subsp. Lactis NFRC11 has a higher anti-stress effect because the serotonin content ratio is higher than 2.0 and the amount of serotonin secreted is higher, and Lactococcus lactis subsp. It was found that Lactis NFRC11 has a particularly high anti-stress effect because the serotonin amount ratio is higher than 3.0 and the amount of serotonin secreted is large.
試験例2:強制水泳試験
8週齢のBALB/cマウス(日本クレア社より入手)を4群に分け、各群n=6〜7として、以下の表2の試験工程で試験を行った。
試験群は以下の通りである。
第1群:水を経口投与(強制水泳試験(Forced swim test: FST)未実施)(−FST)
第2群:水を経口投与(強制水泳試験実施)(+FST)
第3群:フルオキセチンを経口投与(20mg/kg−BW)(ポジティブコントロール;抗うつ剤として市販)(強制水泳試験実施)(+FST)
第4群:乳酸菌(ラクトコッカス・ラクティス・サブスピーシーズ・ラクティスNFRCL−11)を経口投与(強制水泳試験実施)(+FST)
※第4群の乳酸菌は加熱殺菌してマウス1匹当りの投与量が1×109個となるように調製して経口投与した。
The test groups are as follows.
Group 1: Oral administration of water (Forced swim test (FST) not performed) (-FST)
Group 2: Oral administration of water (compulsory swimming test conducted) (+ FST)
Group 3: Oral administration of fluoxetine (20 mg / kg-BW) (Positive control; marketed as antidepressant) (Forced swimming test conducted) (+ FST)
Group 4: Oral administration of lactic acid bacteria (Lactococcus lactis subspecies lactis NFRCL-11) (forced swimming test conducted) (+ FST)
※ lactic acid bacteria of the fourth group of the dose of murine per animal and heat sterilization were prepared to orally administered so that 1 × 10 9 cells.
強制水泳試験は、マウスを水槽(シリンダーサイズ:φ20×500mm、水温:23〜25℃、水嵩:15cm)に入れて行った。強制水泳試験後直ぐに採血を行い、血漿中のコルチコステロン濃度(ng/ml)を、ELISAキット(Enzo社製)を用いて測定した。その結果を図2に示す。 The forced swimming test was carried out by placing the mouse in a water tank (cylinder size: φ20 × 500 mm, water temperature: 23 to 25 ° C., water volume: 15 cm). Blood was collected immediately after the forced swimming test, and the plasma corticosterone concentration (ng / ml) was measured using an ELISA kit (manufactured by Enzo). The result is shown in FIG.
強制水泳試験の結果によれば、第2群(水を経口投与(強制水泳試験実施))および第3群(フルオキセチンを経口投与(強制水泳試験実施))は、第1群(水を経口投与(強制水泳試験未実施))に比べて血漿中のコルチコステロン濃度は有意に増加した。一方、第4群(乳酸菌を経口投与(強制水泳試験実施))は、第2群および第3群に比べて血漿中のコルチコステロン濃度が低く、第1群に比べて有意な増加は見られなかった。 According to the results of the forced swimming test, the second group (oral administration of water (compulsory swimming test)) and the third group (oral administration of fluoxetin (compulsory swimming test)) were the first group (oral administration of water). (Forced swimming test not conducted)), the concentration of corticosterone in plasma increased significantly. On the other hand, in the 4th group (oral administration of lactic acid bacteria (forced swimming test)), the plasma corticosterone concentration was lower than that in the 2nd and 3rd groups, and a significant increase was observed as compared with the 1st group. I couldn't.
従って、ラクトコッカス属の乳酸菌(特に、ラクトコッカス・ラクティス・サブスピーシーズ・ラクティスNFRCL−11)を有効成分として含有する組成物を用いることにより、血漿中のコルチコステロン濃度が低下して、水泳によるストレスが軽減されていることが分かり、当該組成物を抗ストレス組成物として用いることができることが分かった。 Therefore, by using a composition containing a lactic acid bacterium belonging to the genus Lactococcus (particularly, Lactococcus lactis subspices lactis NFRCL-11) as an active ingredient, the concentration of corticosterone in plasma is reduced, and swimming is performed. It was found that the stress was reduced, and it was found that the composition could be used as an anti-stress composition.
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