JP6133471B2 - キサンチンオキシダーゼ阻害剤 - Google Patents
キサンチンオキシダーゼ阻害剤 Download PDFInfo
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- JP6133471B2 JP6133471B2 JP2016099987A JP2016099987A JP6133471B2 JP 6133471 B2 JP6133471 B2 JP 6133471B2 JP 2016099987 A JP2016099987 A JP 2016099987A JP 2016099987 A JP2016099987 A JP 2016099987A JP 6133471 B2 JP6133471 B2 JP 6133471B2
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- JP
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- Prior art keywords
- extract
- xanthine oxidase
- uric acid
- hishimi
- oxidase inhibitor
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Description
オニビシの実(福岡県柳川市産)を十分に清浄水で洗浄した後、ミキサーで粉砕した。次いで、この粉砕した実に該実の質量の5倍の質量の純水を加え、5分間超音波処理した。超音波処理後、これを95℃以上に加熱して沸騰させ、その後加熱を1時間続けた。次いで、これを冷却した。これを3000rpmにて20分間遠心分離し、生じた上清を採取し、凍結乾燥した(「菱実エキス全体」)。
ヒメビシの実(福岡県柳川市産)を出発材料に用いた以外は、実施例1と同様にして、全体および種々の分子量画分の抽出物を得た。
調製例1の全体および種々の分子量画分の抽出物(「菱実エキス全体」、「菱実エキスMW≦3000」、「菱実エキス3000<MW≦10000」、「菱実エキス10000<MW≦30000」および「菱実エキスMW>30000」)を用いて、100mg/mLの各溶液を調製した(以下、便宜上「100mg/mL菱実エキス」という)。
雄性SD系ラット(6週齢:日本クレア株式会社より購入)を1週間、馴化飼育した。実験開始の12時間前より、ラットを絶食させ、自由飲水とした。ラットの高尿酸血症の誘発には、オキソン酸を用いる方法を用いた。すなわち、ラットを、コントロール群(オキソン酸無処理群)、オキソン酸処理群(オキソン酸処理被験物質無投与群)、被験物質投与群(アロプリノール投与群、調製例1の「菱実エキス全体」、「菱実エキスMW≦3000」、「菱実エキス3000<MW≦10000」、「菱実エキス10000<MW≦30000」および「菱実エキスMW>30000」の各投与群)に分けた。オキソン酸処理群および被験物質投与群のラットには、オキソン酸カリウム(和光純薬株式会社より購入)を250mg/kg-体重となるように皮下投与した。コントロール群のラットには、同様の量の生理食塩水(PBS)を皮下投与した。オキソン酸投与1時間後、被験物質投与群のラットには、被験物質(アロプリノールは10mg/kg-体重、菱実被験物質は100mg/kg-体重)を胃内投与した。被験物質の胃内投与の2時間後、各群のマウスについてエーテル吸入麻酔下で腹部大動脈より採血した。採血した血液を、遠心により血清に分離し、各個体の血清中尿酸濃度を尿酸測定キット(尿酸C−テストワコー:和光純薬工業株式会社)で測定した。この結果を図1に示す。
オニビシ(福岡県産)の殻をむき、殻部分を十分に洗浄した。その後、この殻部分を0.5cm〜1.0cm角に切断した。表面温度を250℃に暖めたホットプレートに上記オニビシ殻100gを入れてふたをし、5分間加熱して炒り蒸しした。次いで、炒り蒸ししたオニビシ殻を、ペーパータオルの上に広げて冷ましながら、板の上で10分間揉んで、オニビシ殻内部に存在する水分を表面に揉み出した。表面温度を150℃に調整したホットプレートに揉み出したオニビシ殻を入れて、菜箸で絶えずかき混ぜながら、途中3回取り出して揉みながら30分間乾燥させた。その後、一旦、オニビシ殻を取り出し、ホットプレートの上にペーパータオルを敷いて、オニビシ殻を広げ、またさらに20分間ホットプレートで乾燥させた。このようにして処理したオニビシ殻茶1.5gを200mLの熱湯(100℃)に入れ、30分間蒸らし出し、飲用の菱実茶を得た。
健常な(投薬等治療中の者を除く)成人男女(年齢21.4±3.8歳)を被験者候補として選出し、当該被験者候補から、事前検診(身長・体重・血圧・血液検査および問診)により健常であることが確認された32名を選抜して被験者とした。
Claims (4)
- 菱実抽出物を有効成分として含有する、キサンチンオキシダーゼ阻害剤(飲食品に限る)。
- 菱実を熱水抽出して菱実抽出物を得る工程を含む、キサンチンオキシダーゼ阻害剤(飲食品に限る)の製造方法。
- 前記熱水抽出で設定される熱水の温度が40℃から100℃である、請求項2に記載の製造方法。
- 請求項1に記載のキサンチンオキシダーゼ阻害剤を含有する、血中尿酸値上昇抑制剤。
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