JP6511878B2 - 腸内細菌叢改善剤 - Google Patents
腸内細菌叢改善剤 Download PDFInfo
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- JP6511878B2 JP6511878B2 JP2015049134A JP2015049134A JP6511878B2 JP 6511878 B2 JP6511878 B2 JP 6511878B2 JP 2015049134 A JP2015049134 A JP 2015049134A JP 2015049134 A JP2015049134 A JP 2015049134A JP 6511878 B2 JP6511878 B2 JP 6511878B2
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- bacterial flora
- intestinal bacterial
- acetylglucosamine
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- OVRNDRQMDRJTHS-UHFFFAOYSA-N N-acelyl-D-glucosamine Natural products CC(=O)NC1C(O)OC(CO)C(O)C1O OVRNDRQMDRJTHS-UHFFFAOYSA-N 0.000 claims description 22
- OVRNDRQMDRJTHS-FMDGEEDCSA-N N-acetyl-beta-D-glucosamine Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-FMDGEEDCSA-N 0.000 claims description 22
- MBLBDJOUHNCFQT-LXGUWJNJSA-N N-acetylglucosamine Natural products CC(=O)N[C@@H](C=O)[C@@H](O)[C@H](O)[C@H](O)CO MBLBDJOUHNCFQT-LXGUWJNJSA-N 0.000 claims description 22
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- MSWZFWKMSRAUBD-IVMDWMLBSA-N 2-amino-2-deoxy-D-glucopyranose Chemical compound N[C@H]1C(O)O[C@H](CO)[C@@H](O)[C@@H]1O MSWZFWKMSRAUBD-IVMDWMLBSA-N 0.000 description 14
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- FWMNVWWHGCHHJJ-SKKKGAJSSA-N 4-amino-1-[(2r)-6-amino-2-[[(2r)-2-[[(2r)-2-[[(2r)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]piperidine-4-carboxylic acid Chemical compound C([C@H](C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N1CCC(N)(CC1)C(O)=O)NC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 FWMNVWWHGCHHJJ-SKKKGAJSSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
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- Coloring Foods And Improving Nutritive Qualities (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
[1] N−アセチルグルコサミン、グルコサミン及びその塩から選ばれた少なくとも1種を有効成分とすることを特徴とする腸内細菌叢改善剤。
[2] 腸内細菌叢を多様化させる作用を有するものである前記[1]記載の腸内細菌叢改善剤。
[3] 腸内の善玉菌を相対的に増加させる作用を有するものである前記[1]又は[2]記載の腸内細菌叢改善剤。
[4] 前記善玉菌がビフィドバクテリウム目(Bifidobacteriales)の細菌である前記[3]記載の腸内細菌叢改善剤。
・被検物質
(1)グルコサミン塩酸塩(焼津水産化学工業株式会社、エビ由来、純度98%以上)
(2)N−アセチルグルコサミン(焼津水産化学工業株式会社、エビ・カニ由来、純度95%以上)
(1)老化促進モデルマウス(SAMP/1マウス):日本エスエルシー株式会社から15週齢のマウスを購入して使用
(2)自然加齢マウス(ICRマウス):宮城大学食産業学部ファームビジネス学科動物遺伝育種学研究室から分譲されたものを使用
供試動物のSAMP/1マウスは3ヵ月間、ICRマウスは6ヵ月間馴致したのち、試験に使用した。水は自由飲水で、飼料は市販飼料である「ラボMRストック」(商品名、日本農産工業株式会社)を給餌した。明暗は12時間で切り替え、床替えは週1回行い、1ケージに1頭という個別飼育を行った。SAMP/1マウスの区分けは1区:水投与、2区:グルコサミン塩酸塩投与、3区:N−アセチルグルコサミン投与とし、各区5頭(n=5)で行ったが、実験中に2区と3区で1頭ずつ死亡したため、1区はn=5、2区はn=4、3区はn=4で行った。ICRマウスの区分けも同様に、1区:水投与、2区:グルコサミン塩酸塩投与、3区:N−アセチルグルコサミン投与とし、1区、2区、3区共にn=5で行った。
被検物質の投与量としては、年齢65−70歳、平均体重62kgの一般人男性が、1日当たりに摂取する量、すなわち、グルコサミン塩酸塩は1日当たり1500mg、N−アセチルグルコサミンは1日当たり1000mgを想定し、マウスの体重で換算した量を投与するように蒸留水に溶かして投与試料とした。調製した投与試料を、1mLシリンジで100μL計量し、胃ゾンデ針を装着して、マウスに経口で強制投与した。投与は毎日正午に1回(24時間に1回)行い、8週間継続して連続投与を行った。
投与開始より8週間後、マウスを麻酔下に屠殺し、開腹して大腸管を採取した。糞便は、大腸管から直接1.5mLチューブに採取し、−30℃で凍結した。この凍結サンプルを室温にて解凍し、常法に従いDNAを抽出、精製して、T-RFLP(Terminal restriction fragment length polymorphism)解析に供した。なお、T-RFLP解析は、下記Nagashimaらの方法(以下参照)に基づく解析を、株式会社テクノスルガ・ラボに委託した。
K. Nagashima et al., Phylogenetic Analysis of 16S Ribosomal RNA Gene Sequences from Human Fecal Microbiota and Improved Utility of Terminal Restriction Fragment Length Polymorphism Profiling, Bioscience and Microflora, Vol. 25, 2006, No. 3, pp.99-107.
下記表5に示されるように、水投与区と比較し、グルコサミン塩酸塩投与区及びN−アセチルグルコサミン投与区でClostridiales目及びLactobacillales目の相対的な割合が顕著に低下した。また、グルコサミン塩酸塩投与区においてBifidobacteriales目の相対的な割合が顕著に増加した。
下記表6に示されるように、水投与区と比較し、グルコサミン塩酸塩投与区およびN−アセチルグルコサミン投与区でClostridiales目及びLactobacillales目の相対的な割合が顕著に低下した。また、N−アセチルグルコサミン投与区においてビフィドバクテリウム目(Bifidobacteriales)の相対的な割合が顕著に増加した。
配列番号1:16SリボソームRNA遺伝子の種特異的領域のPCR増幅のための蛍光標識フォワードプライマー;5’HEX-labeled 516f(5’-TGCCAGCAGCCGCGGTA-3’;E. coli positions 516-532)
配列番号2:16SリボソームRNA遺伝子の種特異的領域のPCR増幅のためのリバースプライマー;1510r(5’-GGTTACCTTGTTACGACTT-3’;E. coli positions 1510-1492)
Claims (5)
- N−アセチルグルコサミンを有効成分とし、ヒトの場合には20歳以上、動物の場合には、前記ヒトの場合の20歳以上に相当する年齢の動物に投与するものであることを特徴とする腸内細菌叢改善剤。
- 上記動物がイヌである場合には、1.5年齢以上の動物に投与し、上記動物がネコである場合には、1.5年齢以上の動物に投与する、請求項1記載の腸内細菌叢改善剤。
- 腸内細菌叢を多様化させる作用を有するものである請求項1又は2記載の腸内細菌叢改善剤。
- 腸内の善玉菌を相対的に増加させる作用を有するものである請求項1〜3のいずれか1項に記載の腸内細菌叢改善剤。
- 前記善玉菌がビフィドバクテリウム目(Bifidobacteriales)の細菌である請求項4記載の腸内細菌叢改善剤。
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JP2016169175A JP2016169175A (ja) | 2016-09-23 |
JP6511878B2 true JP6511878B2 (ja) | 2019-05-15 |
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JPH07102100B2 (ja) * | 1986-02-27 | 1995-11-08 | 農林水産省食品総合研究所長 | キチン分解物の食品素材 |
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