天然萜类化合物在宫颈癌抗癌机制中的研究

随着中草药低毒高效的特点逐渐为大家认知,越来越多的中草药被用于宫颈癌的治疗.萜类化合物是中草药中一类比较重要的化合物,现已发现青蒿素、香樟醇、冬凌草甲素和大豆皂苷等多种萜类化合物表现出抗宫颈癌活性,其中二萜化合物紫杉醇已广泛应用于宫颈癌治疗,并且取得了较好的临床疗效,该类化合物的抗癌机制也正处于研究中.就萜类物质在宫颈...     

含有萜类物质的植物与抗肿瘤研究（医技）

萜类化合物是自然界种类繁多的一类次生代谢物。目前已知的萜类物质有30，000种。它们是以异戊二烯为结构单元组成的化合物，又称类异戊二烯。萜类化合物表现出许多令人欣喜的生理药理活性，是中药和天然植物药的主要有效成分。其药理活性主要包括昆虫拒食性，生长调节作用，抗氧化活性，抗真菌和微生物活性，以及细胞毒性、抗癌、抗肿瘤活性。     

萜类农药化合物的研究进展

萜类化合物是从植物中提取的具有诸多生物活性的次生代谢产物,也是国内外植物源农药中含量较多、研究较广泛的一类化合物。在我国,利用萜类等植物次生物质进行害虫防治,有着悠久的历史,尤其是近几十年,萜类化合物在有害生物防治中担任着不可替代的角色,     

抗癌中草药的品种筛选与合理使用

近几十年来,国内外医学界注意从植物中寻找有效的治疗癌症的成分,取得了一定的成效。该文讨论抗癌中草药的筛选和合理使用问题,由于种种原因,现在进入临床使用的中草药物还不多。在合理使用方面也存在一定的误区,就抗癌中草药的筛选和合理使用问题提出了几点看法。     

锗元素与抗肿瘤药物(Ⅰ)

综述了有机锗抗肿瘤药物，对β－羧乙基锗倍半氧化物（Ｇｅ－１３２）和螺锗在肿瘤学中的作用以及抗癌效应机制作出评价。自８０年代起至今，又有含硫杂、柠檬酸、氨基酸、苯基的锗化合物，以及锗酵母、含锗中草药等被先后合成出来。在几类具有生物活性的有机锗化合物中，仍首推Ｇｅ－１３２、螺锗及其衍生物为低毒有效抗肿瘤候选药物。然而对于锗导致的毒性及其机理仍需进一步加以探讨。     

锗元素与抗肿瘤药物(Ⅱ)(续上期)

综述了有机锗抗肿瘤药物，对β－羧乙基锗倍半氧化物（Ｇｅ－１３２）和螺锗在肿瘤学中的作用以及抗癌效应机制作出评价。自８０年代起至今，又有含硫杂、柠檬酸、氨基酸、苯基的锗化合物，以及锗酵母、含锗中草药等被先后合成出来。在几类具有生物活性的有机锗化合物中，仍首推Ｇｅ－１３２，螺锗及其衍生物为低毒有效抗肿瘤候选药物，然而对于锗导致的毒性及其机理仍需进一步加以探讨。     

锗元素与抗肿瘤药物（Ⅱ）

综述了有机锗抗肿瘤药物，对β－羧乙基锗倍半氧化物和螺锗在肿瘤党的作用以及抗癌效应机制作出评价。自８０年代起至今，又有含硫杂、柠檬酸、氨基酸、苯基的锗化合物，以及锗酵母、含锗中草药等先后合成出来。在几类具有生物活性的有机锗化合物中，仍首推Ｇｅ－１３２，螺锗及其衍生物为低毒有铲抗肿瘤候选药物，然而对于锗导致的互惠性及其人机理仍需进一步加以探讨。     

黄酮类化合物的降脂活性及其作用机制的研究进展

黄酮类化合物是一种植物次级代谢产物,由光合作用产生,已被研究证实具有抗氧化、降血脂、清除自由基、抑菌、消炎、抗癌、抗H I V等多重生物活性,其对某些疾病的预防、缓解和治疗作用已引起广泛关注。本文着重综述黄酮类化合物的降脂作用及其作用机制方面的研究进展。     

锗元素与抗肿瘤药物（I）

综述了有机锗抗肿瘤药物，对β－羧乙基锗倍半数（Ｇｅ－１３２）和螺锗在肿瘤学中的作用以及抗癌效应机制作出评价，自８０年代起至今，又有含硫杂，柠檬酸，苯基的锗化合物，以及锗酵母，含锗中草药等被先后合成出来，在几类具有生物活性的有机锗化合物中，仍首推Ｇｅ－１３２，螺锗及其衍生物为低毒有效抗肿瘤候选药物，然而对于猪导致的毒性及其机理的仍需进一步加以探讨。     

萜类化合物对蚊虫驱避活性的初步筛选研究

目的　从32个萜类化合物中筛选对蚊虫有较好驱避活性的品种。方法　小白鼠筛选。结果　32个萜类化合物中有8个化合物表现出对白纹伊蚊具有一定的驱避活性。结论　进一步的人体保护试验有希望筛选出符合国家标准、具有开发前景的萜类驱避剂。     

广东地产毒性中药材常用品种的分析及中毒预防

目的分析广东地产毒性中药材常用品种,研究预防中毒的措施,从而为临床救治提供理论依据。方法归纳及分析常用的广东地产毒性中药材的功效、中毒症状、毒性及预防方法。结果广东地产毒性中药以引起人体皮肤损伤、破坏血液循环、神经中枢损伤为主。广东地产毒性中药材主要具有清热解毒、消肿止痛等功效(即抗菌、抗病毒、抗癌),多用于治疗脊髓型颈椎病、腰椎间盘疾病、癌痛,促使白血病、前列腺癌等肿瘤细胞凋亡。结论对广东地产中毒性中药材药性研究进行更系统的分析,可促使中药材药用功能更加明确,利于临床医务人员了解中毒表现症状及相关作用。     

四种中药抗结核分枝杆菌药物敏感性的初步研究

目的初步探讨四种中药抗结核分枝杆菌的药物敏感性。方法对长沙市中心医院2009年1月-2010年3月确诊的结核病患者培养分离结核分枝杆菌,进行药物敏感性试验。采用改良罗氏培养基制备四种中药药物培养基,未加中药的改良罗氏培养基作为对照,分别观察结核分枝杆菌在四种中药药敏培养基上的生长情况。结果 1号中药培养基检测临床分离株79株,中药药物敏感性试验38株敏感,敏感率为48.10%;2号中药培养基检测临床分离株78株,中药药物敏感性试验62株敏感,敏感率为79.49%;3号中药培养基检测临床分离株41株,中药药物敏感性试验36株敏感,敏感率为87.80%;4号中药培养基检测临床分离株34株,中药药物敏感性试验31株敏感,敏感率为91.18%。四种中药对结核分枝杆菌药物敏感性不同,以3号和4号的抗菌效果最佳(χ2=35.82,P0.01)。结论 2号、3号和4号中药培养基均显示出良好的抑菌效果,其中3号和4号中药效果更好。可以进行临床用药进一步证实2种药在人体内对结核分枝杆菌的作用。     

Chinese herbal medicine, sibship, and blood lead in children

OBJECTIVES: Risk factors for increased blood lead concentration (BPb) has been investigated. However, the effect of sibship and Chinese herbal medicine on BPb has not been systematically studied. In this study BPb data from voluntary testing was used to determine if Chinese herbal medicine and sibship were associated with BPb. METHODS: 319 children aged 1-7 were tested for BPb. Meanwhile, parents were interviewed to obtain information including consumption of Chinese herbal medicine, living environment, lifestyle, and sibship of the children tested. RESULTS: The mean (SD) BPb of 319 preschool children was 4.4 (2.4) micrograms/dl. The consumption of Ba-baw-san (a Chinese herbal medicine) was significantly associated with increased BPb in children (p = 0.038). Further multivariate regression analysis of BPb in 50 pairs of siblings showed the factors of being brothers explained 75% of variation for BPb, and being sisters and brother-sister explained 51% and 41% of variation respectively. CONCLUSION: Chinese herbal medicine and children's play patterns within the family expressed in different types of sibship are the main determinants of low concentrations of BPb in preschool children of Taiwan.

 

     

Adjuvant effect of Japanese herbal medicines on the mucosal type 1 immune responses to human papillomavirus (HPV) E7 in mice immunized orally with Lactobacillus-based therapeutic HPV vaccine in a synergistic manner

The Japanese herbal medicines, Juzen-taiho-to (JTT) and Hochu-ekki-to (HET), have been shown to enhance humoral immune responses to vaccine antigen when used as adjuvants for prophylactic vaccines. However, their adjuvant effect on mucosal cellular immune responses remains unstudied. The precursor lesion of cervical cancer, high-grade CIN that expresses HPV E7 oncoprotein ubiquitously is a target for HPV therapeutic vaccines that elicit mucosal E7-specific type 1 T cell responses. We have demonstrated that oral immunization with recombinant Lactobacillus casei expressing HPV16 E7 (LacE7) is more effective in eliciting mucosal E7-specific IFNγ-producing cells than subcutaneous or intramuscular antigen delivery. Here we report the synergistic effect of an oral Lactobacillus-based vaccine and Japanese herbal medicines on mucosal immune responses. Oral immunization of mice with LacE7 plus either a Japanese herbal medicine (JTT or HET) or a mucosal adjuvant, heated-labile enterotoxin T subunit (LTB), promotes systemic E7-specific type 1 T cell responses but not mucosal responses. Administration of LacE7 plus either Japanese herbal medicine and LTB enhanced mucosal E7-specific type 1 T cell response to levels approximately 3-fold higher than those after administration of LacE7 alone. Furthermore, secretion of IFNγ and IL-2 into the intestinal lumen was observed after oral administration of LacE7 and was enhanced considerably by the addition of Japanese herbal medicines and LTB. Our data indicated that Japanese herbal medicines, in synergy with Lactobacillus and LTB, enhance the mucosal type 1 immune responses to orally immunized antigen. Japanese herbal medicines may be excellent adjuvants for oral Lactobacillus-based vaccines and oral immunization of LacE7, HET and LTB may have the potential to elicit extremely high E7-specific mucosal cytotoxic immune response to HPV-associated neoplastic lesions.     

中药材的药效与其所含微量元素关系的研究进展

中药材的药效与其所含微量元素的种类和含量有着密切的关系,这一现象越来受到国内外学者的广泛关注。根据近年国内外的有关文献报道,着重概述了微量元素Fe、Mn和Zn与中药材的药效,微量元素与中药材的产地、药用部位及采收时间的关系,并对中药材中某些微量元素的药理作用与抗衰老的关系进行了阐述。     

针药三种不同疗法治疗围绝经期抑郁症的临床效应分析

目的:比较电针、中药、针药结合三种不同疗法治疗围绝经期抑郁症的临床治疗效应。方法:将确诊为围绝经期抑郁症的患者随机分为电针组、中药组和针药结合组各40例,治疗1个月后观察比较其改良Kupperman评分、Hamilton抑郁量表评分及血清雌二醇(E2)含量。结果:电针组的改良Kupperm评分治疗前为28.20±2.42,治疗后为12.50±2.02,总有效率为72.5%;Hamilton抑郁量表评分治疗前为24.72±0.45,治疗后为10.60±1.12,总有效率为75%;血清E2含量治疗前为(29.50±12.38)pg/ml,治疗后为(46.36±17.7)pg/ml。中药组的改良Kupperm评分治疗前为30.72±2.47,治疗后为13.30±2.06,总有效率为70.0%;Hamilton抑郁量表评分治疗前为25.37±0.60,治疗后为11.17±1.20,总有效率为72.5%;血清E2含量治疗前为(36.27±11.95)pg/ml,治疗后为(46.56±22.34)pg/ml。针药结合组的改良Kupperm评分治疗前为33.67±1.84,治疗后为13.52±1.91,总有效率为72.5%;Hamilton抑郁量表评分治疗前为25.30±0.75,治疗后为10.12±1.35,总有效率为75.0%;血清E2含量治疗前为(37.77±20.47)pg/ml,治疗后为(55.13±28.26)pg/ml。3组比较,P>0.05。结论:无论电针或中药汤剂或针药结合对本病都有一定的治疗效果,三者疗效无明显差异。     

中药进库验收管理中中药鉴定的作用分析

目的：探讨中药进库验收管理中中药鉴定在中药质量控制的重要地位和应用价值。方法：根据我院多年的中药库房进库验收管理的工作体会及中药鉴定经验井结合相关资料进行总结分析。结果：由于中药品种的复杂性,决定了中药库房进库验收管理中,使用中药鉴定进行中药材入库质量把关的首要环节,可有效区分中药材品种并有效防止假冒伪劣药材入库。结论：在中药进库验收管理中实施中药鍪定,严格对库房中药的真实性、安全性和质量优劣进行鉴别和鉴定,可加强中药材的监督管理,提高中药材的入库质量,有利于降低患者用药风险和保证临床用药的有效性和安全性,为患者的身体健康加上一层保险,和谐医患关系,需给予重视,严格执行。     

Antiproliferative Effect of Vine Stem Extract from Spatholobus Suberectus Dunn on Rat C6 Glioma Cells Through Regulation of ROS,Mitochondrial Depolarization,and P21 Protein Expression

The vine stem of Spatholobus suberectus Dunn (SS) is used as a traditional herbal medicine in China. Chinese herbal medicines are well known as natural bioactive compounds that can be used as new medicines, and their antioxidant and anticancer effects have also been reported. This study aimed to examine the anticancer effect of a high-pressure hot-water SS extract on rat C6 glioma cells. The SS extract effectively suppressed the viability and proliferation of C6 glioma cells through an antioxidant effect. Reactive oxygen species (ROS) levels in cancer cells are higher than that in normal cells. If the ROS level falls below that required for the growth of cancer cells, their rapid proliferation and growth can be suppressed. We also measured the induction of mitochondrial membrane depolarization and cell cycle arrest effect caused by the SS extract in C6 glioma cells through a FACS analysis. In addition, we observed an increase in STAT3, p53, E2F1, and p21 mRNA expression and a decrease in Bcl-2 mRNA expression by quantitative PCR. An increase in p21 protein expression of over 83% was observed through western blot analysis. All these data support the fact that the high-pressure hot-water SS extract has the potential to be used for glioma treatment.     

Chinese herbal medicine and interferon in the treatment of chronic hepatitis B: a meta-analysis of randomized,controlled trials

OBJECTIVES: This meta-analysis was conducted to examine the effectiveness of Chinese herbal medicine (either alone or with interferon alfa) in treating chronic hepatitis B. METHODS: We searched the TCMLARS, AMED, CISCOM, EMBASE, MEDLINE, and Cochrane Collaboration databases and then hand-searched the articles' bibliographies. RESULTS: Chinese herbal medicine significantly increased seroreversion of HBsAg and was equivalent to interferon alfa in seroreversion of HBeAg and hepatitis B virus (HBV) DNA; Chinese herbal medicine combined with interferon alfa significantly increased seroreversion of HBsAg, HBeAg, and HBV DNA. The Chinese herbal medicine active component bufotoxin combined with interferon alfa significantly increased HBeAg and HBV DNA seroreversion. The Chinese herbal medicine active component kurorinone was equivalent to interferon alfa in seroreversion of HBeAg and HBV DNA. CONCLUSIONS: Although the quality of existing studies was poor, these data suggest that further trials of Chinese Herbal Medicine and interferon in chronic hepatitis B infection are justified.     

中药调节噪声引起的动物肝AST、ALT变化的研究

以大鼠为实验对象,研究了在不同声强,不同时间暴露下的大鼠肝中天冬氨酸转氨酶（AST）和丙氨酸转氨酶（ALT）活性的变化。实验结果表明,噪声组大鼠肝AST和ALT活性指标均低于正常值,说明噪声对大鼠肝能造成一定的损害,在噪声环境中,将注射一定剂理黄芪或红景天提取液的大鼠与未注射的大鼠各测试指标进行比较,发现两种药物对噪声刺激产生的损害都有一定的防治作用。