Agarwood extract, pharmaceutical composition containing it and use thereof
The technology of agarwood extract and medicine is applied in the field of preparation of medicines for diseases caused by glucose and lipid metabolism disorders, and can solve the literature reports that no agarwood extracts can improve glucose and lipid metabolism disorders, no agarwood extracts, no See the issue of agarwood extract promoting insulin secretion, etc., to achieve the effect of improving glucose tolerance, impaired glucose tolerance, and angina pectoris
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Embodiment 1
[0050] Embodiment 1: Preparation of Agarwood extract of the present invention
[0051] (1) After pulverizing 500 g of agarwood, reflux extraction with 4 L of 95% by volume ethanol aqueous solution for 2 hours to obtain an extract; repeat the extraction twice in the same way, and combine the extracts.
[0052] (2) Concentrate and dry the extract obtained in step (1) under reduced pressure to obtain 93g of extract; dissolve the extract with 500ml of water, extract 3 times with petroleum ether (1000ml / time), and combine the extracts 3 times to obtain petroleum ether extract; and then extract the aqueous layer with ethyl acetate 3 times (1000ml / time), and combine the three extracts to obtain the ethyl acetate extract.
[0053] (3) The ethyl acetate extract obtained in step (2) was concentrated and dried under reduced pressure to obtain 46 g of ethyl acetate extract.
Embodiment 2
[0054] Example 2: Experimental Research on Insulin Secretion Stimulation of Agarwood Extract of the Present Invention
[0055] 1. Experimental materials:
[0056] 1. Drugs: (1) Test drug: Agarwood extract of the present invention; (2) Positive control drug: Atorvastatin (Pfizer Pharmaceutical Co., Ltd., H20051407), Gliclazide (Tianjin Huajin Pharmaceutical Co., Ltd. , H10910053).
[0057] 2. Animals: SPF grade C57BL / 6ApoE- / - mice, 6-8 weeks old, weighing 19-23g, male; provided by the Animal Center of Peking University Health Science Center.
[0058] 3. Reagents and instruments: Glucose (Beijing Baierdi Biotechnology Co., Ltd.); Insulin injection (NovoNordisk, Denmark); Mouse insulin ELISA quantitative detection kit (Mercodia, Sweden); blood glucose meter and blood glucose test paper (Roche Vitality, GU type, Germany); multi-functional microplate reader (TECAN, Switzerland, M1000 type); centrifuge (Eppendorf, USA, 5424R electronic balance (Swiss METTLER TOLEDO company, PL4...
Embodiment 3
[0090] Example 3: Experimental Research on Insulin Secretion Stimulation of Agarwood Extract of the Present Invention
[0091] 1. Experimental materials:
[0092] 1. Cells: Hamster HIT-T15 cells
[0093] 2. Test drug: Agarwood extract of the present invention
[0094] 3. Reagents and instruments: KRB buffer (Krebs-Ringer Bicarbonate Buffer); RPMI 1640 cell culture medium and fetal bovine serum (Corning, USA); Gliclazide (China Institute for Food and Drug Control); cell culture box (SANYO company, MCO-18AIC); ultra-clean bench (ESCO company, OptiMair); centrifuge (Eppendorf, 5424R type); multifunctional microplate reader (Switzerland TECAN company, M1000 type); mouse insulin ELISA quantitative detection kit ( Sweden Mercodia company).
[0095] 2. Experimental method:
[0096] HIT-T15 cells were cultured with RPMI 1640 complete medium containing 10% (volume percentage) fetal bovine serum, and when they grew logarithmically, they were digested with 0.25% trypsin, and then r...
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