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1.
Total glucosides of paeony (TGP) is the major active constituent of Paeonia lactiflora Pall. The present study was carried out to investigate the effects of TGP on adjuvant arthritis (AA) of rat and its possible mechanisms. AA was induced by metatarsal footpad injection with complete Freund's adjuvant in male Sprague-Dawley rats. The secondary inflammatory reaction was evaluated by hind paw swelling, polyarthritis index. Activity of interleukin-1 (IL-1) was detected by Con A-induced thymocytes proliferation of C57BL/6J mice assay. The tumor necrosis factor alpha (TNFalpha), prostaglandin E(2) (PGE(2)) and cyclic adenosine monophosphate (cAMP) levels in synoviocytes were assessed by radioimmunoassay (RIA). PGE(2) receptors, EP2 and EP4, were analyzed by Western blot analysis. The level of IL-6 was measured by ELISA. Intragastric administration of TGP (50,100 mg/kg) significantly decreased secondary inflammatory reaction in AA rats. Suppressing the activity of IL-1 and TNFalpha, decreased PGE(2) and increased cAMP levels in synoviocytes of AA rats were observed after administration of TGP. In the immunoblot analysis, TGP could up-regulate the expression of EP2 and EP4. These results showed TGP significantly inhibited the progression of AA, and the inhibitory effects might be associated with its ability to mediate the level of cAMP and inhibit the production of IL-1, TNFalpha, IL-6 and PGE(2) from activated synoviocytes.  相似文献
2.
The popular medicine Passiflora edulis has been used as a sedative, tranquilizer, against cutaneous inflammatory diseases and intermittent fever. Most of the pharmacological investigations of Passiflora edulis have been addressed to its Central Nervous System activities, such as anxiolytic, anticonvulsant and sedative actions. Otherwise, there are few reports about the anti-inflammatory activity of the Passiflora species. The aim of this study was to investigate the mechanism of the anti-inflammatory effect of aqueous lyophilized extract obtained from leaves of Passiflora edulis var. flavicarpa Degener (Passifloraceae) in the mouse model of pleurisy induced by carrageenan (Cg), bradykinin, histamine or substance P, observing the effects upon leucocytes migration, myeloperoxidase (MPO), nitric oxide (NO) concentrations and tumor necrosis factor-alpha (TNFalpha) and interleukin-1 beta (IL-1beta) levels. RESULTS: Passiflora edulis (250mg/kg) administered by intraperitoneal route (i.p.) inhibited the leukocyte, neutrophils, myeloperoxidase, nitric oxide, TNFalpha and IL-1beta levels (P<0.01) in the pleurisy induced by carrageenan. Passiflora edulis (250-500mg/kg, i.p.) also inhibited total and differential leukocytes in the pleurisy induced by bradykinin, histamine or substance P (P<0.05). CONCLUSION: Several mechanisms, including the inhibition of pro-inflammatory cytokines (TNFalpha, IL-1beta), enzyme (myeloperoxidase) and mediators (bradykinin, histamine, substance P, nitric oxide) release and/or action, appear to account for Passiflora edulis's actions.  相似文献
3.
甘遂对正常小鼠肝脏相关炎性因子表达的影响   总被引:1,自引:0,他引:1       下载免费PDF全文
目的:观察甘遂醇提取物对正常小鼠肝脏功能及其相关炎性因子表达的影响,以探讨其对肝脏的安全性.方法:分别给小鼠灌胃给药(1.2、0.6、0.3 g·kg-1)2 h、4h和7d,取血清测ALT,取肝脏做组织学观察,并提取RNA,Real time PCR测IL-β、TNFα和Caspase3表达的变化.结果:甘遂醇提取物给药不同时间对正常小鼠肝脏组织形态影响不明显,给药2h大剂量对ALT明显升高,对炎性因子IL-β的mRNA表达明显上调,对凋亡相关因子Caspase3的mRNA表达影响不明显.结论:甘遂对正常小鼠肝脏具有确实的毒性.其作用特点主要与炎性损伤有关,与凋亡关系不明显.  相似文献
4.
目的 :探讨 s F as与 s F as L和 TNFα在类风湿关节炎 ( RA )发病中的意义。方法 :采用固相酶联免疫分析( EL ISA)法检测 38例 RA患者血清 s Fas,s F as L含量及 TNFα水平。结果 :RA患者血清 s F as,s Fas L ,TNFα水平均高于正常对照组 ,RA患者活动期 s F as L,TNFα显著高于非活动期 ( P<0 .0 1) ,而 s Fas水平未见显著差异。在 38例 RA患者中 ,有 13例 s F as和 s F as L 的水平同时升高 ,RA活动期患者血清 s Fas L 的增高与 TNFα增高呈正相关 ( r=0 .46 9P<0 .0 1) ,而其它组间无相关性 ( P>0 .0 5 )。结论 :s Fas L水平与 RA的炎症程度有关 ,高浓度 s Fas和 s F as L可抑制 Ts细胞对 Th的负向调节。TNFα与 s Fas L具有关联性。血清 s Fas,s Fas L ,TNFα检测有助于对 RA病情进展作出判断 ,并为 RA的免疫生物治疗提供新方法。  相似文献
5.
萨仁  王富春  池岛乔 《针刺研究》2004,29(2):140-144
目的 :通过肿瘤坏死因子 (TNFα)基因表达 ,研究针灸治疗绝经后骨质疏松症的作用机理。方法 :8个月龄SD雌性大鼠 40只 ,双侧卵巢切除后 ,均分为模型、针刺、艾灸、西药四组。相同水、饲料喂养 3个月后 ,针刺、艾灸、西药组治疗 3个疗程。将 40只鼠断头取血 ,检测血清中骨钙素(BGP)、雌二醇 (E2 )含量 ;取双侧股骨测骨密度 ;无菌条件下取出大鼠右侧胫骨 ,分离骨髓细胞 ;利用对L92 9细胞的杀伤作用检测TNFαmRNA生物活性 ;利用RT PCR技术检测TNFαmRNA表达。结果 :针刺、艾灸组BGP、E2 较模型组有显著增高 (P <0 0 5) ;L92 9死亡率较模型组明显减少(P <0 0 0 1) ;RT PCR显示TNFαmRNA表达较模型组明显减少。结论 :针刺、艾灸治疗绝经后骨质疏松症是在基因转录后水平上进行的 ,即针灸治疗绝经后骨质疏松症是通过调控TNFαmRNA表达 ,从而控制TNFα蛋白合成来实现的  相似文献
6.

Ethnopharmacological relevance

The oil macerates of Hypericum perforatum L. (St. John?s Wort=SJW) have a long history of medicinal use and SJW has been used in traditional medicine both orally and topically for centuries worldwide mainly for wound healing, ulcer and inflammation.

Materials and methods

We analyzed the fatty acid composition of 10 traditionally (home-made) and 13 commercially (ready-made) prepared SJW oil macerates by GC–MS. The acid, peroxide, iodine, saponification values, and the unsaponifiable matters of the samples were determined according to the European Pharmacopoeia. We also explored potential mechanism of wound healing effect of the samples, i.e. TNFα-induced NF-κB activation.

Results

The most home-made oil samples contained oleic acid predominantly and complied with the requirements set for olive oil by European Pharmacopoeia. However, majority of the ready-made samples appeared to have adulteration with some other oils. Moderate NF-κB inhibitory effects have been observed with some of the oil samples.

Conclusion

This study sheds light on the fact that application of the proper traditional method to prepare olive oil macerates from Hypericum perforatum is able to get bioactive constituents in the oil. Besides, inhibition of TNFα-induced NF-κB activation appears to be a potential mechanism for topical wound healing activity of SJW oil macerates.  相似文献
7.

Ethnopharmacological relevance

Helichrysum italicum (Roth) G. Don fil. (family Asteraceae) has been used for its medicinal properties for a long time and, even nowadays, continues to play an important role in the traditional medicine of Mediterranean countries. Based on this traditional knowledge, its different pharmacological activities have been the focus of active research. This review aims to provide an overview of the current state of knowledge of the pharmacological activities of Helichrysum italicum, as well as its traditional uses, toxicity, drug interactions and safety.

Materials and methods

The selection of relevant data was made through a search using the keywords “Helichrysum italicum” and “H. italicum” in “Directory of Open Access Journals”, “Google Scholar”, “ISI Web of Knowledge”, “PubMed”, “ScienceDirect” and “Wiley Online Library”. Information obtained in local and foreign books and other sources was also included.

Results

There are reports on the traditional use of Helichrysum italicum in European countries, particularly Italy, Spain, Portugal and Bosnia and Herzegovina. In these countries, its flowers and leaves are the most used parts in the treatment of health disorders such as allergies, colds, cough, skin, liver and gallbladder disorders, inflammation, infections and sleeplessness. In order to validate some of the traditional uses of Helichrysum italicum and highlight other potential applications for its extracts and isolated compounds, several scientific studies have been conducted in the last decades. In vitro studies characterized Helichrysum italicum as an antimicrobial and anti-inflammatory agent. Its flavonoids and terpenes were effective against bacteria (e.g. Staphylococcus aureus), its acetophenones, phloroglucinols and terpenoids displayed antifungal action against Candida albicans and its flavonoids and phloroglucinols inhibited HSV and HIV, respectively. Helichrysum italicum acetophenones, flavonoids and phloroglucinols demonstrated inhibitory action in different pathways of arachidonic acid metabolism and other pro-inflammatory mediators. Regarding Helichrysum italicum in vivo activity, the highlight goes to the anti-erythematous and photoprotective activities of its flavonoids, demonstrated both in animals and humans, and to the anti-inflammatory properties exhibited by its flavonoids, acetophenones and phloroglucinols, as seen in animal models. Concerning its safety and adverse effects, while Helichrysum italicum does not display significant levels of cytotoxicity or genotoxicity, it should be noticed that one of its flavonoids inhibited some CYP isoforms and a case has been reported of an allergic reaction to its extracts.

Conclusions

Helichrysum italicum is a medicinal plant with promising pharmacological activities. However, most of its traditionally claimed applications are not yet scientifically proven. Clinical trials are needed to further confirm these data and promote Helichrysum italicum as an important tool in the treatment of several diseases.  相似文献
8.

Ethnopharmacological relevance

Xylopia aethiopica is used in a decoction of the dried fruit to treat bronchitis, asthma, arthritis, rheumatism, headache, neuralgia and colic pain. The aim of the study is to evaluate the anti‐arthritic effects of a 70% aqueous ethanol extract of the fruit of Xylopia aethiopica in a chronic inflammatory model.

Materials and methods

Adjuvant arthritis was induced in Sprague-Dawley rats by intraplantar injection of Complete Freund?s Adjuvant into the right hind paw. Foot volume was measured by water displacement plethysmometry. The oedema component of inflammation was evaluated as the percentage change in paw swelling and the total oedema induced calculated as area under the time course curves. In addition to X-ray radiography, histopathology of ankle joints supported by haematological analysis was used to assess the anti-arthritic action of the extract of Xylopia aethiopica (XAE).

Results

Xylopia aethiopica extract (100, 300 and 600 mg kg−1) modified the time course curve significantly reducing hind paw oedema in the ipsilateral paw at all dose levels when administered both prophylactically and therapeutically. In addition XAE significantly suppressed the systemic spread of the arthritis from the ipsilateral to the contralateral limbs. The radiological pictures of the joints particularly metatarsal, phalanges and the ankle joint space of rats in the XAE-treated group showed protective effect against adjuvant-induced arthritis while histopathology revealed significant reduction in mononuclear infiltration, pannus formation and bone erosion. The haematological analysis in the test animals revealed significant improvement relative to the CFA model group.

Conclusion

Xylopia aethiopica XAE suppresses joint inflammation and destruction in arthritic rats  相似文献
9.
目的:观察三黄消渴汤对糖尿病大鼠血管内皮细胞TNFα的影响。方法:雄性Wistar大鼠随机分为正常对照组和模型组。模型组再分为模型对照组、中药治疗组、阳性对照组,分别给予三黄消渴汤药液和生理盐水灌胃。1次/d,连续8周后腹主动脉取血、离心、检测血糖、血脂、TNFα。结果:三黄消渴汤组能降低血糖、血脂及TNFα水平。结论:三黄消渴汤能调节糖尿病大鼠糖脂代谢,保护胰岛细胞,增加靶组织对胰岛素的敏感性。  相似文献
10.

Ethnopharmacological relevance

Lecythis pisonis Camb., also known in Brazil as sapucaia, is used in folk medicine against pruritus, muscle pain and gastric ulcer.

Aim of the study

To investigate the antinociceptive effect of ethanol extract from Lecythis pisonis leaves (LPEE), fractions (hexane-LPHF, ether-LPEF and ethyl acetate-LPEAF) and mixture of triterpenes [ursolic and oleanolic acids (MT)] in mice.

Materials and methods

LPEE and LPEF were evaluated on the acetic acid induced writhings and formalin, capsaicin and glutamate tests. In addition, MT was investigated on the writhings induced by acetic acid, capsaicin and glutamate tests. In the study of some possible mechanisms involved on the antinociceptive effect of LPEF, it was investigated the participation of opioid system, K+ATP channels and l-arginine-nitric oxide pathway.

Results

LPEE (12.5 and 25 mg/kg, p.o.), LPEF and MT (6.25, 12.5 and 25 mg/kg, p.o.) reduced the writhings in comparison to saline. LPEE (100 mg/kg, p.o.) and LPEF (50 mg/kg, p.o.) were effective in inhibiting both phases of formalin test. In capsaicin test, LPEE (100 and 200 mg/kg, p.o.), LPEF (12.5–50 mg/kg, p.o) and MT (6.25–25 mg/kg, p.o.) showed a significant antinociceptive effect compared to the control. LPEE (25 and 50 mg/kg, p.o.), LPEF (50 and 100 mg/kg, p.o.) and MT (12.5 and 25 mg/kg, p.o.) reduced the glutamate-evoked nociceptive response. Treatment with naloxone, l-arginine and glibenclamide reversed the effect of LPEF in glutamate test.

Conclusions

These results indicate the antinociceptive effect of Lecythis pisonis leaves and suggest that this effect may be related to opioid pathway, K+ATP channels, and l-arginine-nitric oxide modulation. Furthermore, these data support the ethnomedical use of this plant.  相似文献
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