JP7106531B2 - 新規なクエルセチン系化合物を含む認知機能改善用組成物 - Google Patents
新規なクエルセチン系化合物を含む認知機能改善用組成物 Download PDFInfo
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- JP7106531B2 JP7106531B2 JP2019518025A JP2019518025A JP7106531B2 JP 7106531 B2 JP7106531 B2 JP 7106531B2 JP 2019518025 A JP2019518025 A JP 2019518025A JP 2019518025 A JP2019518025 A JP 2019518025A JP 7106531 B2 JP7106531 B2 JP 7106531B2
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Description
他の具現例によると、前記認知機能低下は、記憶力減退、認知減退、識別力減退、鬱病、及び健忘症からなる群より選ばれる一つ以上を含むものであってよい。
緑茶(Camellia sinensis var. Yabukita)葉で作った緑茶に水を添加して水分含量を40質量%に調整した。これにバチルス・サブチリス(Bacillus subtillis)5×106cfu/gを接種し、50℃で3日間醗酵させた後に80℃で4日間醗酵させた。
前記後発酵茶試料150gをアセトンで分画してカテキン誘導体及びカフェインを除去し、他の化合物が濃縮された可溶物を収得した。前記アセトン可溶物40gに対し一次的にシリカゲルコラムクロマトグラフィーを利用して、クロロホルム:メタノールの5:1(v/v)混合物を溶媒として分画物を得た。
前記クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]とクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]のベータ-アミロイド凝集阻害効果を蛍光分析法(Thioflavin T assay)で確認した。
前記クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]とクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]の皮膚累積刺激性の有無を確認し、皮膚に使用できる濃度範囲を算出するために、HRIPT(Human repeated insult patch tests)を実施した。
前記新規物質31及び新規物質32が細胞内でも効能を奏するかを確認した。具体的に、SH-SY5Y(神経母細胞種、韓国細胞株銀行)細胞株を6ウェルプレート(well plate、FALCON)にウェル当たり2×106ずつシードし(seeding)、37℃で24時間、5%CO2インキュベーターで培養後、GCG 10μM、EGCG 10μM、既存の緑茶抽出物(green tea extract、GTE)10μg/ml、前記「新規物質31」10μg/ml、「新規物質32」10μg/ml陽性対照群として5-Aza-2’deoxycytidine(5-Aza、Sigma-aldrich)1μMで処理して、24時間さらに培養した。しかる後、培地をすべて除去し、RNA抽出キット(RNeasy mini kit、Quiagen社)を利用してRNAを抽出した。抽出したmRNAを、紫外線検出器(TECAN社)を利用して定量後、1μgのmRNAをキット(SuperScript VILO cDNA Synthesis Kit、Thermofisher scientific社)を利用して相補的なDNAに合成した。約1μgの相補的なDNAを取り、Taqman probe(Life technology社)とQuantitect Probe PCR Kit(Quiagen社)を利用してリアルタイム定量連鎖重合反応を行った。これにより、BDNF及びDNMT1の発現量を確認した。このとき、補正基準mRNAとしては、housekeeping geneであるGAPDHを用いた。
クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]又はクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]20mg、L-カルニチン80~140mg、大豆油180mg、パーム油2mg、植物性硬化油8mg、黄蝋4mg及びレシチン6mgを混合し、通常の方法に従い1カプセルに充填して軟質カプセル剤を製造した。
クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]又はクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]30mg、ガラクトオリゴ糖200mg、乳糖60mg及び麦芽糖140mgを混合して流動層乾燥機を利用して顆粒した後、糖エステル(sugar ester)を6mg添加して、打錠機で打錠して錠剤を製造した。
クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]又はクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]50mg、無水結晶ブドウ糖250mg及び澱粉550mgを混合し、流動層造粒機を使用して顆粒に成形した後、包に充填して顆粒剤を製造した。
クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]又はクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]20mg、ブドウ糖10g、クエン酸0.6g、及び液状オリゴ糖25gを混合した後、精製水300mlを加えて各瓶に200mlずつ充填する。瓶に充填した後、130℃で4~5秒間殺菌してドリンク剤を製造した。
クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]又はクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド]50mg、適量の注射用滅菌蒸留水、適量のpH調節剤を用いて通常的な方法に従い注射剤を製造した。
下記の表7に記載された組成にて通常の方法に従い健康食品を製造した。
Claims (16)
- クエルセチン3-O-[3-O’’-(E)-p-クマロイル][β-D-グルコピラノシル-(1→3)-O-α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド](Quercetin3-O-[3-O’’-(E)-p-coumaroyl][β-D-glucopyranosyl-(1→3)-O-α-L-rhamnopyranosyl-(1→6)-O-β-D-glucopyranoside])及びクエルセチン3-O-[3-O’’-(E)-p-クマロイル][α-L-ラムノピラノシル-(1→6)-O-β-D-グルコピラノシド](Quercetin3-O-[3-O’’-(E)-p-coumaroyl][α-L-rhamnopyranosyl-(1→6)-O-β-D-glucopyranoside])から選ばれる化合物、その薬学的に許容可能な塩、その水和物、その溶媒和物を有効成分として含む認知機能低下改善用組成物。
- 前記化合物、その薬学的に許容可能な塩、その水和物、又はその溶媒和物は、後発酵茶抽出物から得られたものである、請求項1に記載の組成物。
- 後発酵茶の抽出は、熱水、C1~C6の低級アルコール、及びこれらの混合溶媒から選ばれた一つ以上の溶媒による抽出である、請求項2に記載の組成物。
- 前記低級アルコールはエタノールである、請求項3に記載の組成物。
- 前記抽出物は、抽出後にケトンで分画した分画物である、請求項2~4のいずれか一項に記載の組成物。
- 前記ケトンはアセトンである、請求項5に記載の組成物。
- 前記組成物中の前記化合物、その薬学的に許容可能な塩、その水和物、又はその溶媒和物の含量は、前記組成物の総質量に対し、0.00001質量%~10質量%の範囲である、請求項2~6のいずれか一項に記載の組成物。
- 前記組成物中の後発酵茶抽出物の含量は、前記組成物の総質量に対し、0.1質量%~90質量%の範囲である、請求項2~7のいずれか一項に記載の組成物。
- 前記抽出物は、前記化合物、その薬学的に許容可能な塩、その水和物、又はその溶媒和物が、抽出物の総質量を基準に、0.0001質量%~20質量%の範囲で含まれたものである、請求項2~8のいずれか一項に記載の組成物。
- 前記組成物の投与による前記化合物、その薬学的に許容可能な塩、その水和物、又はその溶媒和物の投与量は、0.001mg/kg/日~100mg/kg/日の範囲である、請求項2~9のいずれか一項に記載の組成物。
- 前記認知機能低下は、ベータアミロイド(β-amyloid)の凝集(aggregation)、脳由来神経栄養因子(brain-derived neurotrophic factor、BDNF)発現低下、及びDNMT1(DNA(cytosine-5)-methyltransferase 1)発現増加からなる群より選ばれた一つ以上に起因したものである、請求項2~10のいずれか一項に記載の組成物。
- 前記認知機能低下は、記憶力減退、認知減退、識別力減退、鬱病、及び健忘症からなる群より選ばれる一つ以上を含むものである、請求項2~11のいずれか一項に記載の組成物。
- 前記改善は、ベータ-アミロイドの凝集抑制、凝集したベータ-アミロイドの分解、BDNFの発現増進及びDNMT1の発現減少からなる群より選ばれた一つ以上によってなされる、請求項2~12のいずれか一項に記載の組成物。
- 当該組成物は神経細胞保護用組成物である、請求項2~13のいずれか一項に記載の組成物。
- 前記神経細胞保護は、ベータアミロイド(β-amyloid)の凝集(aggregation)、脳由来神経栄養因子(brain-derived neurotrophic factor、BDNF)の発現低下、及びDNMT1(DNA(cytosine-5)-methyltransferase1)の発現増加からなる群より選ばれた一つ以上による影響から神経細胞を保護することである、請求項14に記載の組成物。
- 前記組成物は食品又は薬学組成物である、請求項2~15のいずれか一項に記載の組成物。
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Nagoya Med J,2012年,52(2),117-134 |
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JP2019535652A (ja) | 2019-12-12 |
KR102418100B1 (ko) | 2022-07-08 |
CN110177473A (zh) | 2019-08-27 |
KR20180042795A (ko) | 2018-04-26 |
CN110177473B (zh) | 2023-05-12 |
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