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1.
目的:通过检测胃溃疡寒证模型大鼠体内能量代谢、物质代谢、脂代谢相关酶的含量,考察高良姜、大高良姜、红豆蔻的黄酮类成分对其表达的影响,以阐述其寒热属性及对胃溃疡寒证模型大鼠能量代谢的影响及作用机制。方法:采用知母水煎液和15%冰乙酸灌胃造胃溃疡寒证模型。以干姜姜辣素为阳性对照,分为空白对照组、阳性对照组、模型组、高良姜高低剂量组、大高良姜高低剂量组、红豆蔻高低剂量组,给药2 d,留取血清、肝组织、胃组织,观察大鼠胃组织病理学变化,通过测定Na+-K+-ATP酶、Ca2+-Mg2+-ATP酶水平考察其黄酮类成分对胃溃疡寒证模型大鼠能量代谢的影响,测定琥珀酸脱氢酶(SDH)、肝糖原水平考察对物质代谢的影响,测定游离脂肪酸(FFA)、脂蛋白脂酶(LIPD)、肝脂酶(LIPC)水平考察对脂代谢的影响。同时测定血清中超氧化物歧化酶(SOD)、丙二醛(MDA)水平。结果:与空白对照组比较,模型组大鼠肝组织中Na+-K+-ATP酶、Ca2+-Mg2+-ATP酶、SDH,以及FFA、LIPD、LIPC、SOD水平显著降低(P<0.05,P<0.01),肝糖原水平和血清中MDA水平显著升高(P<0.05,P<0.01);与模型组比较,给药组能显著升高肝组织中Ca2+-Mg2+-ATP酶及血清中FFA、SDH水平(P<0.05,P<0.01);除大高良姜低剂量组、红豆蔻低剂量组外,其余给药组能显著升高肝组织中Na+-K+-ATP酶(P<0.05,P<0.01);除大高良姜高低剂量组、红豆蔻低剂量组外,其余给药组能显著升高血清SOD水平(P<0.05,P<0.01);除高良姜低剂量组、大高良姜低剂量组外,其余给药组能显著升高LIPD、LIPC水平(P<0.05,P<0.01);给药组能显著降低肝糖原水平,以及血清MDA水平(P<0.05,P<0.01)。结论:3味山姜属中药黄酮类成分能够促进能量代谢、物质代谢、脂代谢,可初步判断3味山姜属中药黄酮类成分温热属性,也说明其可调节胃溃疡寒证大鼠能量代谢和物质代谢、脂代谢紊乱,同时通过增强抗氧化能力而发挥抗溃疡作用。  相似文献   
2.
PurposeThe objective of the present study was to evaluate the systemic anti-inflammatory activity of the hydroalcoholic extract of the leaves of Licania rigida Benth (EHFLR) on models of systemic inflammation in mice.MethodsThe quantitative chemical profiles of phenolic acids and flavonoids were performed by High-Performance Liquid Chromatography (HPLC). Systemic anti-inflammatory activity was determined from carrageenan and dextran-induced paw edema models and the animals were orally treated (p.o.) with EHFLR at doses of 25, 50, 100 mg/kg, indomethacin (10 mg/kg) for carrageenan-induced paw edema and promethazine (6 mg/kg) for dextran-induced paw edema. The possible mechanisms involved in the anti-inflammatory action of the extract were evaluated by the paw edema models induced by histamine and arachidonic acid, and by the model of carrageenan-induced peritonitis, where vascular permeability and leukocyte migration to the peritoneal cavity were evaluated.ResultsThe results of the HPLC identified the presence of phenolic acids and flavonoids, with chlorogenic acid (1.16%) and Caempferol (0.81%) as the main constituents. From the results, it was concluded that the extract has an LD50 ≥5000 mg/kg when administered orally in mice as this dose did not trigger deaths in any of the observed groups. EHFLR (25 mg/kg) showed a significant antiderematogenic effect on histamine and arachidonic acid-induced paw edema at the third hour of the tests, with a percentage of inhibition of 46.64% and 18.33%, respectively. The extract (25 mg/kg, p.o.) also significantly reduced vascular permeability and leukocyte migration in the peritoneal cavity.ConclusionsIt is concluded that EHFLR exerts a systemic anti-inflammatory action, which seems to depend, at least in part, on the inhibition of arachidonic acid metabolism and the action of vasoactive amines. In addition, the extract reduced the leukocyte migration in the peritoneal cavity, indicating that its action may be linked to the inhibition of pro-inflammatory cytokines.  相似文献   
3.
目的 研究黄腊果Stauntonia brachyanthera根的化学成分.方法 利用各种色谱学方法,对药材提取物进行分离纯化,采用核磁共振技术鉴定结构.结果 从黄蜡果根70%乙醇提取物中分离得到13个化合物,分别为3-甲氧基-4-羟基-桂皮醛(Ⅰ)、tortoside F(Ⅱ)、酪醇1-O-β-木糖基-(1→6)-O-β-葡萄糖苷(Ⅲ)、香草酸(Ⅳ)、丁香酸(Ⅴ)、saccharumoside B(Ⅵ)、甘草查儿酮A(Ⅶ)、芦丁(Ⅷ)、异槲皮苷(Ⅸ)、木犀草素-7-O-葡糖糖苷(Ⅹ)、荭草苷(Ⅺ)、6”-O-(3'-羟基-3'-甲基戊二酰)牡荆素(Ⅻ)、槲皮素(Ⅻ).结论 化合物Ⅰ、Ⅲ~Ⅵ、Ⅸ、Ⅺ~)ⅩⅢ均为首次从野木瓜属植物中分离得到.  相似文献   
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Anthemis austriaca Jacq. flowers are traditionally used to alleviate abdominal pain, hemorrhoids, ovary diseases and pneumonia. This study aimed to investigate the effects of A. austriaca flowers, which are frequently used in gynecological disorders, on the rat endometriosis model. The rat endometriosis model was used to evaluate the potential activity of the plant in endometriosis. The dried plant material was extracted with n-hexane, ethyl acetate (EtOAc), and methanol (MeOH), successively. The obtained extracts from A. austriaca flowers were applied to the rats. The adhesion scores, endometrial foci areas, and cytokine levels of the peritoneal fluids were measured on surgical induction of endometriosis in rats. The adhesion scores, endometriotic volume, and cytokine levels of the peritoneal fluids were reduced in the EtOAc, MeOH, and buserelin acetate-treated (reference) groups. The MeOH extract reduced the adhesion scores and endometrial foci areas from 3.1 to 1.1 (p < 0.01) and from 86.4 to 40.5 (p < 0.01), respectively and also the MeOH extract reduced tumor necrosis factor (TNF)-α, vascular endothelial growth factor (VEGF), and interleukin (IL)-6 levels of the peritoneal fluids from 13.7 to 3.8 (p < 0.01), from 28.4 to 16.3 (p < 0.05) and from 50.2 to 24.3 (p < 0.01), respectively. Therefore, isolation studies were conducted on the EtOAc and MeOH extracts. After the MeOH extract was fractionated using RP-18 column, the obtained subfractions were evaluated again on the endometriosis rat model. Subfractions A and C of the MeOH extract displayed statistically significant activity on the endometriosis rat model. Phytochemical investigation resulted in the isolation of 4-β-D-glucopyranosyloxy-6-methyl-2H-pyran-2-one (1) from Fr. A and quercetin (2), apigenin-7-O-(3″-O-acetyl)-β-D-glucopyranoside (3), apigenin-7-O-(6″-O-acetyl)-β-D-glucopyranoside (4), apigenin-7-O-β-D-glucopyranoside (5), quercetin-7-O-β-D-glucopyranoside (6) from Fr. C. Moreover, β-sitosterol-3-O-β-D-glucopyranoside (7) was isolated from the EtOAc extract. As a conclusion, the MeOH extract obtained from A. austriaca flowers contributed to the regression of endometriosis. In addition, flavonoids and sterols of the plant were detected as the possible compounds responsible for the activity.  相似文献   
6.
It has been shown that the extracts including eupatilin and quercetin-3-β-D-glucuronopyranoside had mucoprotective effects on the esophagus and stomach through their antioxidant activities. This study was designed to investigate the anti-inflammatory effect of these flavonoid compounds in an animal model of inflammatory bowel disease induced by 2,4,6-trinitrobenzene sulfonic acid. Experimental colitis was induced by intracolonic administration of 2,4,6-trinitrobenzene sulfonic acid. Extracts including eupatilin or quercetin-3-β-D-glucuronopyranoside were orally administered to animals 48, 24, and 1 h prior to the induction of colitis and then again 24 h later. The animals were sacrificed 48 h after by 2,4,6-trinitrobenzene sulfonic acid treatment and the macroscopic appearance of the colonic lesions was scored in a blinded manner on a scale of 1 to 10. The inflammatory response to colitis induction was assessed by measuring myeloperoxidase activity, nitric oxide production, tumor necrosis factor-α expression, total glutathione levels, and malondialdehyde concentrations in the colon. The results indicated that extracts including eupatilin and extracts including quercetin-3-β-D-glucuronopyranoside dose-dependently improved the morphology of the lesions induced by 2,4,6-trinitrobenzene sulfonic acid and reduced the ulcer index accordingly. In addition, rats receiving extracts including eupatilin and extracts including quercetin-3-β-D-glucuronopyranoside showed significantly decreased levels of mucosal myeloperoxidase activity, nitric oxide production, tumor necrosis factor-α expression, and malondialdehyde levels, and increased total glutathione levels. Extracts including eupatilin and extracts including quercetin-3-β-D-glucuronopyranoside ameliorated the inflammatory response and colonic injury in acute colitis by decreasing oxidative stress and neutrophil activation. Extracts including eupatilin and extracts including quercetin-3-β-D-glucuronopyranoside may inhibit acute colitis.  相似文献   
7.
Because of health benefits that are manifested across various disease areas, the consumption of herbal products and/or health supplements containing different kinds of flavonoids has been on the rise. While the drug–drug interaction potential between flavonoids and co‐ingested drugs still remain an issue, opportunities exist for the combination of flavonoids with suitable anti‐cancer drugs to enhance the bioavailability of anti‐cancer drugs and thereby reduce the dose size of the anti‐cancer drugs and improve its therapeutic index. In recent years, scores of flavonoids have undergone preclinical investigation with variety of drugs encompassing therapeutic areas such as oncology (etoposide, doxorubicin, paclitaxel, tamoxifen etc.), immunosuppression (cyclosporine) and hypertension (losartan, felodipine, nitrendipine etc.). The review provides examples of the recent trends in the preclinical investigation of 14 flavonoids (morin, quercetin, silibinin, kaempferol etc.) with various co‐administered drugs. The relevance of combination of flavonoids with anti‐cancer drugs and a framework to help design the in vitro and in vivo preclinical studies to gain better mechanistic insights are discussed. Also, concise discussions on the various physiological factors that contribute for the reduced bioavailability of flavonoids along with the significant challenges in the data interpretation are provided. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
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正交试验法优选桃红四物汤醇提工艺   总被引:1,自引:0,他引:1  
目的:优选桃红四物汤的醇提工艺。方法:以总黄酮含量和浸膏得率为考察指标,以乙醇浓度、乙醇用量、提取时间、提取次数为考察因素,采用正交试验优选桃红四物汤的最佳醇提工艺。结果:桃红四物汤的最佳醇提工艺为加6倍量80%乙醇提取三次,每次1.5h。结论:优选出的桃红四物汤的醇提工艺合理、稳定,可为其工业化生产提供参考。  相似文献   
10.
目的:优化返魂草总黄酮的提取工艺。方法:以返魂草中总黄酮含量为考察指标,通过单因素实验考察超声时间、温度、功率等对返魂草有效成分含量的影响,采用正交设计实验法确定最佳提取工艺。结果:乙醇回流法提取最佳工艺为:提取时间150 min,溶剂70%乙醇,液料比22∶1。结论:乙醇回流法提取返魂草总黄酮操作方便,工艺稳定,重现性好,适于工业化生产。  相似文献   
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