遗传易感因素与慢性乙型肝炎干扰素治疗反应的相关性

IFN-α以抗病毒及免疫调节双莺作用用于慢性乙型肝炎的治疗,对治疗反应的早期预测有利于治疗的持续.随着人类基因组学和蛋白质组学的研究进展,国内外对HBV感染发病及治疗反应遗传易感因素有较多报道,主要集中于抗病毒蛋白和免疫调节相关细胞因子的基因多态性.此文就遗传易感因素对IFN-α治疗慢性乙型肝炎疗效的影响作了综述.     

昆丹颗粒对代谢综合征大鼠模型的影响及机制研究

目的观察昆丹颗粒对代谢综合征大鼠模型的影响及探讨其可能机制。方法 Wistar雄性大鼠随机分组,分为空白对照组和造模组,空白对照组灌胃蒸馏水,造模组灌胃高脂高糖高盐乳剂。造模6周后,将造模成功的大鼠按体重随机分为5组：模型组、昆丹高剂量组、昆丹中剂量组、昆丹低剂量组、罗格列酮组,药物干预6周,在用药期间继续灌胃高脂高糖高盐乳剂。试验结束后,检测体重、空腹血糖、血清胰岛素、计算胰岛素敏感指数（ISI）、血脂、肿瘤坏死因子-α（TNF-α）、游离脂肪酸（FFA）、瘦素（lept）。结果昆丹高剂量组可明显降低代谢综合征大鼠的空腹血糖、血清胰岛素、尾动脉收缩压、TNF-α,升高胰岛素敏感指数;昆丹高、中剂量组可显著降低体重、FFA、瘦素。结论昆丹颗粒具有明显的减重、降糖、调脂、降压作用,其机制可能与降低FFA、TNF-α、Lept的水平,改善胰岛素敏感性有关。     

Herbal medicines for the prevention of alcoholic liver disease: A review

Ethnopharmacological relevance

Long-term excess alcohol exposure leads to alcoholic liver disease (ALD)—a global health problem without effective therapeutic approach. ALD is increasingly considered as a complex and multifaceted pathological process, involving oxidative stress, inflammation and excessive fatty acid synthesis. Over the past decade, herbal medicines have attracted much attention as potential therapeutic agents in the prevention and treatment of ALD, due to their multiple targets and less toxic side effects. Several herbs, such as Cnidium monnieri (L.) Cusson (Apiaceae), Curcuma longa L. (Zingiberaceae) and Pueraria lobata (Willd.) Ohwi (Leguminosae), etc., have been shown to be quite effective and are being widely used in China today for the treatment of ALD when used alone or in combination.

Aim of the review

To review current available knowledge on herbal medicines used to prevent or treat ALD and their underlying mechanisms.

Materials and methods

We used the pre-set searching syntax and inclusion criteria to retrieve available published literature from PUBMED and Web of Science databases, all herbal medicines and their active compounds tested on ALD induced by both acute and chronic alcohol ingestion were included.

Results

A total of 40 experimental studies involving 34 herbal medicines and (or) active compounds were retrieved and reviewed. We found that all reported extracts and individual compounds from herbal medicines/natural plants could be beneficial to ALD, which might be attributed to regulate multiple critical targets involved in the pathways of oxidation, inflammation and lipid metabolism.

Conclusions

Screening chemical candidate from herbal medicine might be a promising approach to drug discovery for the prevention or treatment of ALD. However, further studies remain to be done on the systematic assessment of herbal medicines against ALD and the underlying mechanisms, as well as their quality control studies.     

黄芪-莪术配伍联合5-氟尿嘧啶对CT26.WT结肠癌原位移植瘤模型小鼠中Th17/Treg平衡及肿瘤相关mRNA和蛋白表达的影响

黄芪-莪术配伍是临床常用治疗肿瘤的组合,基于Th17/Treg细胞平衡探究黄芪-莪术配伍联合5-氟尿嘧啶(5-fluo-rouracil,5-FU)对结肠癌原位移植瘤模型小鼠肿瘤生长的可能作用机制.该研究将90只BALB/c雄性小鼠随机分为9组:空白组,模型组,5-氟尿嘧啶(5-FU)组,黄芪-莪术(2∶1)配伍高、中...     

大黄庶虫虫丸对气虚血瘀大鼠TNF－α和NF－kB／IkB－α的影响

目的：探究大黄庶虫虫丸对气虚血瘀大鼠炎性因子TNF－α和NF－kB／IkB－α信号通路的影响。方法：采用游泳力竭联合注射盐酸肾上腺素复合因素致气虚血瘀的动物模型。大黄庶虫虫丸灌胃干预治疗,造模1周,注射肾上腺素1 h后麻醉,股动脉取血,检测血流变学,并采用放射免疫法测定TNF－α水平, ABC免疫组化法测定NF－kB、 IkB－α信号通路的蛋白表达。结果：模型组与空白组比较TNF－α、 NF－kB显著升高, IkB－α表达明显降低。大黄庶虫虫丸高剂量组与模型组比较, TNF－α、 NF－kB表达明显降低, IkB－α表达明显增高。结论：大黄庶虫虫丸能够降低气虚血瘀大鼠炎性因子TNF－α表达,并通过IkB－α抑制NF－kB的表达进一步抑制炎症的发生和发展,发挥祛瘀补虚之功效。     

红花组分HSYA对人胃腺癌BGC-823移植瘤裸鼠VEGF蛋白、KDR与缺氧诱导因子表达的影响

目的:研究红花组分羟基红花黄色素A(HSYA)对人胃腺癌皮下移植瘤裸鼠血管内皮生长因子(VEGF)蛋白、含激酶插入区受体(KDR)和缺氧诱导因子(HIF-1α)mRNA与蛋白表达的影响。方法:采用BALB/C nu/nu裸小鼠接种人胃腺癌细胞株BGC-823于右前肢腋部皮下建立裸鼠人癌移植瘤模型,随机分为模型组、对照组、HSYA高、低剂量组(0.056g/L、0.028g/L),观察抑瘤作用,酶联免疫吸附测定(ELISA)法检测瘤组织VEGF与HIF-1α蛋白以及血清VEGF蛋白表达;蛋白印迹(Western blotting)法测定瘤组织KDR磷酸化蛋白的表达;实时荧光定量PCR(RTFQ-PCR)法检测瘤组织KDR及HIF-1αmRNA表达。结果:HSYA低剂量组抑瘤明显,该组瘤组织及血清VEGF蛋白表达降低,瘤组织KDR磷酸化蛋白表达减弱,与模型组比较差异明显(P0.05,P0.01);HIF-1α蛋白表达较模型组瘤组织明显减少(P0.01)。KDR mRNA表达与模型组相比减弱,差异有统计学意义(P0.05)。结论:一定浓度的HSYA抑制肿瘤生长的可能机制与抑制VEGF、HIF-1α蛋白的表达,减弱KDR蛋白磷酸化及其基因表达,从而抑制内皮细胞活化阻碍肿瘤血管新生以及降低肿瘤缺氧微环境对血管生成的诱导有关。     

Therapeutic effects of total alkaloids of Tripterygium wilfordii Hook f. on collagen-induced arthritis in rats

Ethnopharmacological relevance

Tripterygium wilfordii Hook f. is one of Traditional Chinese Medicines which is commonly used to treat rheumatoid arthritis (RA). The total alkaloids were the main constituent part of Tripterygium wilfordii Hook f. It has a great significance to study the effects of the total alkaloids of Tripterygium wilfordii Hook f. (ATW) on RA.

Aim of the study

This paper aims at investigating the therapeutic effect of ATW on RA and its possible mechanism, and providing a theoretical and experimental basis for the clinical use of ATW.

Materials and methods

The model of wistar rats of type II collagen-induced arthritis (CIA) was made, and the rats were perfused a stomach with ATW for 4 weeks continuously. Then the levels of interleukin (IL)-6, IL-8, tumor necrosis factor (TNF)-<alpha>, in the serum of CIA rats were detected by enzyme linked immunosorbent assay (ELISA), and the joint pathological section of CIA rats was observed by hematoxylin and eosin (HE) staining method and the expression of IL-6, IL-8, nuclear factor kappa B (NF-κB), TNF-α were measure by immunohistochemistry staining method.

Results

Compared with model group, ATW could significantly reduce paw swelling and suppresse articular cartilage degenerated. The results also found that there was significant reduction levels of IL-6, IL-8 and TNF-α in serum of CIA rats treated with ATW and ATW inhibited the expression of IL-6, IL-8, NF-κB, TNF-α in synovial tissue.

Conclusion

ATW not only could inhibit the symptom of CIA rats significantly but also could inhibit the production of IL-6, IL-8, TNF-α in serum and the expression of IL-6, IL-8, NF-κB and TNF-α in synovial tissue targeting the inflammatory. ATW would be a drug as a novel botanical drug for the treatment of RA.     

益肾化浊法对慢性脑缺血血管性痴呆大鼠脑组织海马HIF-1α和VEGF表达的影响

目的观察益肾化浊法对慢性脑缺血血管性痴呆大鼠脑组织海马低氧诱导因子-1α(hypoxia-inducible factor-1,HIF-1α)和血管内皮生长因子(vascular endothelial growth factor,VEGF)表达的影响。方法采用双侧颈总动脉永久性阻断法建立血管性痴呆大鼠模型,造模后7天随机分为假手术组,模型组和聪圣颗粒低、中、高剂量组和尼麦角林片组,给药治疗60天后,采用Western-blot及Real Time-PCR方法检测大鼠海马HIF-1α、VEGF表达水平。结果与假手术组比较,模型组大鼠HIF-1α和VEGF的蛋白表达量和mRNA的表达量均升高(P0.05);与模型组比较,聪圣颗粒中、高剂量组可升高模型组HIF-1α及VEGF的蛋白和mRNA的表达(P0.05,P0.01)。结论益肾化浊法对慢性脑缺血血管性痴呆大鼠作用机制可能与调控海马区HIF-1α和VEGF的表达有关。     

血必净联合前列腺素E1应用对肺纤维化大鼠肿瘤坏死因子-α的影响

目的:探讨血必净注射液联合前列腺素E1(PGE1)注射液对实验性急性肺间质纤维化大鼠的肿瘤坏死因子-α(TNF-α)的影响。方法:采用一次性气管内注射博来霉素(BLM)的方法复制大鼠肺间质纤维化模型,将大鼠随机分为6组,待处死后,行支气管肺泡灌洗并收集灌洗液(BALF)用ELISA方法测定TNF-α水平。结果:血必净联合PGE1明显抑制TNF-α的表达,尤其第7天时与各组比较(P<0.05或0.01)。结论:血必净联合PGE1联合应用能有效抑制实验性肺纤维化大鼠TNF-α的表达。