JP2023094563A - 認知機能改善剤、神経新生促進剤及び認知機能改善用経口組成物 - Google Patents
認知機能改善剤、神経新生促進剤及び認知機能改善用経口組成物 Download PDFInfo
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Abstract
Description
γ-オリザノールを有効成分として含む。
こととしてもよい。
玄米抽出物として含まれる、
こととしてもよい。
γ-オリザノールを有効成分として含む。
γ-オリザノールを有効成分として含む。
90%質量以上でγ-オリザノールを含む粉末である玄米胚芽抽出エキス(オカヤス社製)を、ULREA SS-11(エム・テクニック社製)を使用して次のようにナノ粒子化した。A液をA液タンクに充填し、タンクを0.3MPaに加圧した。その後、設定値5℃(実測値約8℃)でA液を334mL/分で送液し、次いで設定値80℃(実測値約53℃)でB液を100mL/分で送液した。A液は0.2%マルチトール、0.1%ヒドロキシプロピルセルロース(HPC)を含む水溶液である。また、B液の組成は、玄米胚芽抽出エキス:HPC:エタノールが質量比で1.5:0.8:97.7の溶液である。ディスク回転数を500rpmとし、ディスク背圧を0.02MPaとした。4.3Lの吐出液を回収し、エタノールを留去するため、エバポレーターにて2.9Lまで濃縮した。溶媒留去した分散液を、-80℃で凍結し、凍結乾燥機(FD-550R、東京理化器械社製)で凍結乾燥し、約25gのγ-オリザノール含有ナノ粒子を得た。
50週齢C57BL/6Jマウス(雄、日本SLC社製、24℃で12時間/12時間の明暗サイクルにて飼育)に4か月摂餌させ、短期記憶認知試験を行った。高脂肪食(High fat diet;HFD)群(n=9)には、高脂肪食(D12492、Research Diets社製)を摂餌させた。1%γ-オリザノール含有高脂肪食(HFD-Orz)群(n=9)には、1%γ-オリザノール(富士フイルム和光純薬社製)を配合した高脂肪食を摂餌させた。HFD-Orz群のマウスは、4か月でのγ-オリザノールの摂取量はマウス1匹あたり約3gである。対照として通常食(Lab chow diet;LCD)群(n=9)に低脂肪コントロール飼料(D12450J、Research Diets社製)を摂餌させた。高脂肪食、1%γ-オリザノールを含む高脂肪食及び通常食の栄養組成を表1に示す。
図2は、飼育期間におけるマウスの体重の推移を示す。LCD群に比べ、HFD群及びHFD+Orz群は有意に体重が上昇した。HFD群とHFD+Orz群との間に有意差はなかった(n=9、*:p<0.05)。
50週齢C57BL/6Jマウス(雄、日本SLC社製、24℃で12時間/12時間の明暗サイクルにて飼育)に上記の高脂肪食を4か月間摂餌させ、食事性肥満を誘導した。その後、実施例1で調製したγ-オリザノール含有ナノ粒子(50mg/ml×250μl/頭又は100mg/ml×250μl/頭)を、胃ゾンデを用いて週2回経口投与し、投与開始から1か月後又は3か月後に試験例1と同様に短期記憶認知試験を行った。50mg/mlのγ-オリザノール含有ナノ粒子を投与した群をHFD+Low Orz群とする。100mg/mlのγ-オリザノール含有ナノ粒子を投与した群をHFD+High Orz群とする。FITC-PLGAナノ粒子を、胃ゾンデを用いて週2回経口投与(50mg/ml×250μl)した群をHFD+FITC群とした。対照として通常食(LCD)群には低脂肪コントロール飼料(D12450J、Research Diets社製)を摂餌させた。
図5は、飼育期間におけるマウスの体重の推移を示す。HFD+FITC群、HFD+Low Orz群及びHFD+High Orz群との間に有意差はなかった(n=6又は7)。LCD群は、同じ週のHFD群に対して有意に体重が小さかった(*:p<0.05)。
Claims (5)
- γ-オリザノールを有効成分として含む、
認知機能改善剤。 - 前記γ-オリザノールを含有する生体適合性ナノ粒子をさらに含む、
請求項1に記載の認知機能改善剤。 - 前記γ-オリザノールは、
玄米抽出物として含まれる、
請求項1又は2に記載の認知機能改善剤。 - γ-オリザノールを有効成分として含む、
神経新生促進剤。 - γ-オリザノールを有効成分として含む、
認知機能改善用経口組成物。
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JP2003169632A (ja) * | 2001-12-08 | 2003-06-17 | Sapuri:Kk | 米胚芽油、卵黄油及びホスファチジルセリン含有の健康食品 |
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