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| 1 | Immunohistochemical analysis of p53,cyclinD1,RB1,c-fos and N-ras gene expression in hepatocellular carcinoma in Iran显示文摘AIM: To study the effect of some genes especially those involved in cell cycle regulation on hepatocellular carcinoma. METHODS: Paraffin-embedded tissue samples of 25 patients (18 males and 7 females) with hepatocellular carcinoma were collected from 22 pathology centers in Tehran during 2000-2001, and stained using immunohistochemistry method (avidin-biotin-peroxidase) for detection of p53, cyclinD1, RB1, c-fos and N-ras proteins. RESULTS: Six (24%), 5 (20%), 12 (48%) and 2 samples (8%) were positive for p53, cyclinD1, C-fos and N-ras expression, respectively. Twenty-two (88%) samples had alterations in the G1 cell-cycle checkpoint protein expression (RB1 or cyclinD1). P53 positive samples showed a higher (9 times) risk of being positive for RB1 protein than p53 negative samples. Loss of expression of RB1 in association with p53 over-expression was observed in 4 (66.7%) of 6 samples. Loss of expression of RB1 was seen in all cyclinD1 positive, 20 (90.9%) N-ras negative, and 11 (50%) C-fos positive samples, respectively. CyclinD1 positive samples showed a higher (2.85 and 4.75 times) risk of being positive for c-fos and N-ras expression than cyclinD1 negative samples. CONCLUSION: The expression of p53, RB1 and c-fos genes appears to have a key role in the pathogenesis of hepatocellular carcinoma in Iran. Simultaneous overexpression of these genes is significantly associated with their loss of expression during development of hepatocellular carcinoma. | SJ Moghaddam EN Haghighi S Samiee N Shahid AR Keramati S Dadgar MR Zali | 2007 | World Journal of Gastroenterology2007，13，4： | 73 |
| 2 | 肿瘤部位或决定结肠癌DNA错配修复功能缺陷的预后影响显示文摘目前对于接受氟尿嘧啶、亚叶酸钙及奥沙利铂(FOLFOX)辅助化疗方案治疗的结肠癌患者,DNA错配修复功能缺陷(dMMR)与预后间的联系尚不明了。美国梅奥诊所的Frank A.Sinicrope博士等人进行了一项临床试验,研究人员在2,580份肿瘤患者的蛋白芯片中,检测到314份(12%)肿瘤患者的蛋白芯片存在 dMMR,其中分别有49.3%及10.6%存在BRAFV600E或KRAS突变。尽管从整体而言,MMR状态并非预后预测因素,但研究同时发现,MMR与原发肿瘤部位及淋巴结分期( N1 v N2)间存在显著的相互作用。对突变情况及协变量校正后,研究人员发现,与准确进行MMR邻近肿瘤相对的dMMR可获得良好的DFS结局,但远端肿瘤的dMMR与良好的DFS结局无关。 N2肿瘤患者不能通过dMMR取得生存获益。BRAFV600 E突变或KRAS突变均为较差DFS的独立相关因素。根据肿瘤部位相互作用观察到的MMR得到了III期结肠癌患者独立队列的验证。 | Sinicrope FA Mahoney MR Smyrk TC | 2013 | 中华结直肠疾病电子杂志2013，2，4： | 27 |
| 3 | 大学生自杀意念与社会支持和生命质量的相关性显示文摘目的探讨大学生自杀意念与社会支持和生命质量之间的相关性。方法采用分层整群随机抽样方法对重庆市9 808名在校大学生进行问卷调查,了解重庆市在校大学生自杀意念的发生情况,并通过多元相关分析探讨大学生自杀意念与社会支持和生命质量之间的关系。结果重庆市大学生自杀意念的报告率为13.04%,女生、文科学生、有宗教信仰和有自杀未遂史的大学生自杀意念的发生率较高(分别为16.39%、15.09%、15.05%和68.64%);有自杀意念的大学生在社会支持总分、客观支持、主观支持、对支持的利用度以及生命质量总分、躯体健康状况、心理健康状况、经济状况、工作状况、与家人关系、与他人关系方面均低于无自杀意念大学生(P<0.01);大学生自杀意念与社会支持因子的主观支持(r=-0.100,P<0.01)、对支持的利用度呈负相关(r=-0.094,P<0.01),与生命质量因子的躯体健康状况(r=-0.127,P<0.01)、心理健康状况(r=-0.067,P<0.01)和经济状况(r=-0.081,P<0.01)呈负相关。结论重庆市大学生自杀意念的发生率较高。社会、家庭、学校应重视大学生心理健康,完善大学生的社会支持系统,并采取综合干预措施,预防大学生自杀意念和自杀行为的发生。 | 陈小容 况利 操军 艾明 陈建梅 王我 牛亚娟 PHILLIPS MR | 2014 | 第二军医大学学报2014，35，1： | 18 |
| 4 | 理疗中连续被动运动的临床应用显示文摘本世纪70年代,Salter 提出滑液关节的连续被动运动(continuous passive motion,CPM),来促进关节组织的愈合。现在,应用已扩展到各种矫形外科情况,其指征包括下述膝关节情况的康复,多数关节内外骨折的固定、膝关节的软组织处理、膝关节内外骨折的固定、膝关节的软组织处理、膝关节脓毒症,膝关节成形术、前十字韧带再建、膝伸肌机构的手术等。CPM 对软组织和关节面有独特的生理作用,但需进一步的临床研究以制定出适当的CPM 方案。本文旨在综述关于临床CPM 研究、动物的CPM 研究和CPM 在理疗中的可能应用。 | Mccarthg MR 卢光增 | 1993 | 国外医学(物理医学与康复学分册)1993，13，2： | 16 |
| 5 | Extragastric manifestations of Helicobacter pylori infection: Possible role of bacterium in liver and pancreas diseases显示文摘Helicobacter pylori(H. pylori) is an ancient microorganism that has co-evolved with humans for over 60000 years. This bacterium typically colonizes the human stomach and it is currently recognized as the most common infectious pathogen of the gastroduodenal tract. Although its chronic infection is associated with gastritis, peptic ulcer, dysplasia, neoplasia, MALT lymphoma and gastric adenocarcinoma, it has been suggested the possible association of H. pylori infection with several extragastric effects including hepatobiliary and pancreatic diseases. Since a microorganism resembling H. pylori was detected in samples from patients with hepatobiliary disorders, several reports have been discussed the possible role of bacteria in hepatic diseases as hepatocellular carcinoma, cirrhosis and hepatic encephalopathy, nonalcoholic fatty liver disease and fibrosis. Additionally, studies have reported the possible association between H. pylori infection and pancreatic diseases, especially because it has been suggested that this infection could change the pancreatic physiology. Some of them have related a possible association between the microorganism and pancreatic cancer. H. pylori infection has also been suggested to play a role in the acute and chronic pancreatitis pathogenesis, autoimmune pancreatitis, diabetes mellitus and metabolic syndrome. Considering that association of H. pylori to liver and pancreas diseases needs further clarification, our work offers a review about the results of some investigations related to the potential pathogenicity of H. pylori in these extragastric diseases. | Elizabeth MA Rabelo-Goncalves Bruna M Roesler Jose MR Zeitune | 2015 | World Journal of Hepatology2015，7，30： | 16 |
| 6 | 葛根素和大豆甙元抑制[^3H]氟硝西泮和体外大鼠脑膜的结合显示文摘从中药葛根中提取到两种苯二氮草受体活性化合物:葛根素和大豆甙元。两种化合物在体外可抑制[￣3H]氟硝西洋和大鼠脑细胞膜的结合,IC_(50)值分别为18.46μmol·L-1和15.43μmol·L-1。大豆贰元还可抑制[￣3H]哌唑嗪和α1-肾上腺素受体的结合(IC_(50)值为89μmol·L￣(-1))。两种化合物的GABA比分别为1.11和1.12,提示两种黄酮化合物是苯二氮受体的拮抗剂或部分激动剂。Scatchardplot分析显示:两种化合物对[￣3H]氟硝西洋与膜结合的抑制作用是通过竞争性与非竞争性混合机制而实现的。 | 沈行良 Wiff,MR | 1996 | 药学学报1996，31，1： | 14 |
| 7 | Multidrug resistance 1 gene in inflammatory bowel disease: A meta-analysis显示文摘MDR1 基因是为煽动性的肠疾病(IBD ) 并且也许的致病的吸引人的候选人基因对治疗的反应,与在功能、基因的层次的证据。它的产品, P-glycoprotein (P-gp ) 作为因此影响许多药的布置和反应的 transmembrane 流出泵工作,一些(即 glucocorticoids ) 对 IBD 中央治疗。另外, P-gp 高度在许多上皮的表面被表示,包括的胃肠道(官方补给) 与在减少的一个通常认为的角色吸收内长或外毒素,并且也许主人细菌相互作用。MDR1 基因的许多基因变化被描述了,在为不同 P-gp 表示的一些例子证据,也,药新陈代谢被提供了。然而,数据经常由于采用的基因异质和不同方法论正在冲突。也许,在官方补给的道的 P-gp 的生理的重要性的证据的最大的片来自对老鼠建模的 mdr1 大美人的描述,它在特定的没有病原体的环境开发自发的大肠炎。学习调查到 IBD 的基因多型性和倾向也显示出冲突结果的 MDR1,由于在复杂疾病的已知的困难,特别当建议基因贡献是弱的时。在这研究,我们承担了在 IBD 与二 SNP 多型性(C3435T 和 G2677T/A ) 获得的可得到的调查结果的元分析;3435T 等位基因和 3435TT 遗传型的一个重要协会与 UC 被发现了(或 = 1.17, P = 0.003 并且或 = 1.36, P = 0.017,分别地) 。在对比,有 CD 和 G2677T/A 多型性的协会都不能被表明。 | V Annese MR Valvano O Palmieri A Latiano F Bossa A Andriulli | 2006 | World Journal of Gastroenterology2006，12，23： | 14 |
| 8 | 昆虫病原线虫(Steinernema longicaudum BPS品系)生物学测定显示文摘研究旨在明确采自北京平谷圣泉庵橡树根际土壤中昆虫病原线虫(Steinernema longicaudum BPS)的生物学特性,进而明确开发应用的可能性。结果显示:在剂量10和20IJs/幼虫下,BPS对寄主幼虫的侵染效果相近,大蜡螟的校正死亡率分别为40.0%和36.7%,黄粉甲的分别为50.0%、53.3%;在剂量40、80、160IJs/幼虫下,BPS的侵染力随剂量的增高而增大,大蜡螟和黄粉甲的校正死亡率分别为73.3%、86.7%、90.0%和70.0%、80.0%、90.0%;在剂量320和640IJs/幼虫下的侵染效果(校正死亡率100%)相近。BPS经40℃水浴处理1h校正死亡率达98%,处理3h,线虫100%死亡;经37℃、36℃和34℃水浴处理10h,校正死亡率分别为92.4%、55.4%和45.7%,处理20h,线虫100%死亡。该线虫在30℃条件下的水平运动能力比在18℃和25℃的强,有34.6%的线虫用24h的时间运动到3.6cm处。研究结果表明BPS具有较强的侵染力、耐热性和水平扩散能力,据此初步分析BPS具有被开发应用潜能。 | 刘奇志 张丽娟 王玉柱 杜小康 孙浩元 Zdeneck Mráek | 2009 | 中国农学通报2009，25，2： | 13 |
| 9 | 慢性肾脏病中的炎症和动脉硬化:慢性肾功能不全队列研究中的发现显示文摘慢性肾脏病(chronic kidney disease,CKD)和动脉硬化程度与心血管病发病率和死亡率增加相关。目前认为炎症在动脉硬化发展中发挥作用,而CKD被认为是一种促炎症反应的状态。CKD患者的动脉僵硬度增加,横断面数据提示CKD中增多的炎症标志物与较高动脉僵硬度值相关。 | Peyster E Chen J Feldman HI Go AS Gupta J Mitra N Pan Q Porter A Rahman M Raj D Reilly M Wing MR Yang W Townsend RR 陈云 叶鹏 | 2017 | 中华高血压杂志2017，25，11： | 12 |
| 10 | 女性盆底功能障碍性疾病的MRI技术与报告规范显示文摘盆底功能障碍性疾病是中老年女性的常见疾病,严重影响患者生活质量。MRI作为一项重要的无创性评估手段,现已被推荐应用于盆底功能障碍性疾病的诊断、评估、治疗方案抉择、手术方案制订及疗效评估。然而目前不同单位在成像技术以及图像的解读及报告等方面尚未达到规范化,一定程度上影响这一成像技术的临床推广。本文中,结合国内外有关女性盆底功能障碍性疾病的重要研究结果及国外已发布与该疾病有关的技术规范与共识,同时汇集国内该领域专家的实践经验和重要观点,聚焦于MRI指征、检查前准备、扫描序列、疾病诊断及分级的标准化,初步形成一个共识性规范,以期更好地指导MRI在该疾病的临床应用。 | 中华医学会放射学分会MR学组 廖伟华 严福华 陈敏 | 2022 | 中华放射学杂志2022，56，1： | 10 |
| 11 | 常规脂蛋白检测和载脂蛋白在心血管病预测中的比较显示文摘总胆固醇和高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)测量值对于心血管病风险评估至关重要,但对于其他脂质用于风险预测的效用一直存在争议。该研究纳入来自英国生物银行(Biobank)的无基线心血管病、未服用他汀类药物、有相关的脂质指标(n=346 686)的受试者。 | Welsh C Celis-Morales CA Brown R Mackay DF Lewsey J Mark PB Gray SR Ferguson LD Anderson JJ Lyall DM Cleland JG Jhund PS Gill J MR Pell JP Sattar N Welsh P 刘青(译) 叶鹏(摘、审校) | 2019 | 中华高血压杂志2019，27，7： | 10 |
| 12 | Role of CARD15,DLG5 and OCTN genes polymorphisms in children with inflammatory bowel diseases显示文摘AIM: To investigate the contribution of variants of CARD15, OCTN1/2 and DLG5 genes in disease predispo- sition and phenotypes in a large Italian cohort of pediatric patients with inflammatory bowel diseases (IBD). METHODS: Two hundred patients with Crohn’s disease (CD), 186 ulcerative colitis (UC) patients, 434 par- ents (217 trios), and 347 healthy controls (HC) were studied. Polymorphisms of the three major variants of CARD15, 1672C/T and -207G/C SNPs for OCTN genes, IGR2096a_1 and IGR2198a_1 SNPs for the IBD5 locus, and 113G/A variant of the DLG5 gene were evaluated. Potential correlations with clinical sub-phenotypes were investigated. RESULTS: Polymorphisms of CARD15 were significantly associated with CD, and at least one variant was found in 38% of patients (15% in HC, OR = 2.7, P < 0.001). Homozygosis for both OCTN1/2 variants was more com- mon in CD patients (1672TT 24%, -207CC 29%) than in HC (16% and 21%, respectively; P = 0.03), with an in- creased frequency of the TC haplotype (44.8% vs 38.3% in HC, P = 0.04). No association with the DLG5 variant was found. CD carriers of OCTN1/2 and DLG5 variants more frequently had penetrating disease (P = 0.04 and P = 0.01), while carriers of CARD15 more frequently had ileal localization (P = 0.03). No gene-gene interaction was found. In UC patients, the TC haplotype was morefrequent (45.4%, P = 0.03), but no genotype/phenotype correlation was observed. CONCLUSION: Polymorphisms of CARD15 and OCTN genes, but not DLG5 are associated with pediatric on- set of CD. Polymorphisms of CARD15, OCTN, and DLG5 genes exert a weak influence on CD phenotype. | S Cucchiara A Latiano O Palmieri AM Staiano R D'Incà G Guariso G Vieni V Rutigliano O Borrelli MR Valvano V Annese | 2007 | World Journal of Gastroenterology2007，13，8： | 9 |
| 13 | 肠道微生物群影响皮肤健康显示文摘皮肤和肠道都是暴露于外界、活跃且复杂的免疫和神经内分泌器官,具有广泛的微生物群落。皮肤是人体最大的器官,可作为抵御伤害和微生物攻击的防御屏障。肠道内有数万亿个微生物群落,与宿主长期健康密切相关。肠道和皮肤之间存在双向的相互作用。肠道微生物多样性改变(菌群失调)会增加宿主的易感性并破坏黏膜的免疫耐受,进一步会影响皮肤健康。痤疮、特应性皮炎(atopic dermatitis,AD)、银屑病和酒渣鼻等多种皮肤病与肠道菌群失调有关。 | 武明阳 姚煦 Mahmud MR Akter S Tamanna SK | 2022 | 中华临床免疫和变态反应杂志2022，16，5： | 9 |
| 14 | Endoscopicultrasonographyforsurveillanceofindividualsathighriskfor pancreaticcancer显示文摘Pancreatic cancer is a highly lethal disease with a ge-netic susceptibility and familial aggregation found in 3%-16% of patients. Early diagnosis remains the only hope for curative treatment and improvement of prog-nosis. This can be reached by the implementation of an intensive screening program, actually recommended for individuals at high-risk for pancreatic cancer de-velopment. The aim of this strategy is to identify pre-malignant precursors or asymptomatic pancreatic can-cer lesions, curable by surgery. Endoscopic ultrasound (EUS) with or without fine needle aspiration(FNA) seems to be the most promising technique for early de-tection of pancreatic cancer. It has been described as a highly sensitive and accurate tool, especially for small and cystic lesions. Pancreatic intraepithelial neoplasia, a precursor lesion which is highly represented in high-risk individuals, seems to have characteristics chronic pancreatitis-like changes well detected by EUS. Many screening protocols have demonstrated high diagnostic yields for pancreatic pre-malignant lesions, allowing prophylactic pancreatectomies. However, it shows a high interobserver variety even among experienced en-dosonographers and a low sensitivity in case of chronic pancreatitis. Some new techniques such as contrast-en-hanced harmonic EUS, computer-aided diagnostic tech-niques, confocal laser endomicroscopy miniprobe andthe detection of DNA abnormalities or protein markersby FNA, promise improvement of the diagnostic yield ofEUS. As the resolution of imaging improves and as ourknowledge of precursor lesions grows, we believe thatEUS could become the most suitable method to detectcurable pancreatic neoplasms in correctly identifiedasymptomatic at-risk patients. | Lami G Biagini MR Galli A | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，7： | 8 |
| 15 | Plasminogen kringle 5-engineered glioma cells block migration of tumor- associated macrophages and suppress tumor vascularization and progres- sion.显示文摘 | Perri SR Nalbantoglu J Annabi B Koty Z Lejeune L Francois M Di Falco MR Beliveau R Galipeau J | 2005 | 中国神经肿瘤杂志2005，3，3： | 8 |
| 16 | Biochemical changes in phenols,flavonoids,tannins,vitamin E,β-carotene and antioxidant activity during soaking of three white sorghum varieties显示文摘Objective:To investigate the changes in total phenols,flavonoids,tannins,vitamin E, β-carotene and antioxidant activity during soaking of three white sorghum varieties.Methods: The changes in total phenols,total ilavonoids,tannins,phenolic acids compounds,flavonoid components,vitamin E,P-carotene and antioxidant activity during soaking of sorghum grains were determined.Results:Total phenols,total flavonoids,tannins,vitamin E,P-carotene and antioxidant activity in raw sorghum were ranged from 109.21 to 116.70,45.91 to 54.69,1.39 to 21.79 mg/100 g,1.74 to 5.25,0.54 to 1.19 mg/kg and 21.72%to 27.69%and 25.29%to 31.97%,respectively. The above measured compounds were significantly decreased after soaking.p-Hydroxybenzoic acid,vanillic acid,syringic acid and cinnamic acid represent the major phenolic acids in Dorado variety.While ferulic acid,p-coumaric acid,gallic acid and caffeic acid represent the major phenolic acids in Shandaweel-6.On the other hand,protocatechuic acid represents the major phenolic acids in Giza-15.Regarding flavonoids components,Dorado was the highest variety in kampferol and naringenin while Shandaweel-6 was the highest variety in luteolin, apigenin,hypersoid,quercelin and christen.Finally,Giza-15 was the highest variety in catechin. Phenolic acids,flavonoid compounds and antioxidant activities were decreased after soaking. Conclusions:Sorghum varieties have moderate quantities from total phenols,total flavonoids, tannins,phenolic acids compounds,flavonoid components,vitamin E,P-carotene and antioxidant activity which decreased after soaking. | Abd El-Moneim MR Afify Hossam S El-Beltagi Samiha M Abd El-Salam Azza A Omran | 2012 | Asian Pacific Journal of Tropical Biomedicine2012，2，3： | 7 |
| 17 | hsa-miR-29c and hsa-miR-135b differential expression aspotential biomarker of gastric carcinogenesis显示文摘AIM: To investigate the expression profiles of hsa-mi R-29 c and hsa-mi R-135 b in gastric mucosal samples and their values as gastric carcinogenesis biomarkers. METHODS: The expression levels of hsa-mi R-29 c and hsa-mi R-135 b in normal gastric mucosa, non-atrophic chronic gastritis, intestinal metaplasia and intestinaltype gastric adenocarcinoma were analysed using quantitative real-time PCR. The difference between hsa-mi R-29 c and hsa-mi R-135 b expression profiles in the grouped samples was evaluated by ANOVA and Student's t-test tests. The results were adjusted for multiple testing by using Bonferroni's correction. P values ≤ 0.05 were considered statistically significant. To evaluate hsa-mi R-29 c and hsa-mi R-135 b expressions as potential biomarkers of gastric carcinogenesis, we performed a receiver operating characteristic curve analysis and the derived area under the curve, and a Categorical Principal Components Analysis. In silico identification of the genetic targets of hsa-mi R-29 c and hsa-mi R-135 b was performed using different prediction tools, in order to identify possible genes involved in gastric carcinogenesis.RESULTS: The expression levels of hsa-mi R-29 c were higher in normal gastric mucosal samples, and decreased progressively in non-atrophic chronic gastritis samples, intestinal metaplasia samples and intestinal-type gastric adenocarcinoma samples. The expression of hsa-mi R-29 c in the gastric lesions showed that non-atrophic gastritis have an intermediate profile to gastric normal mucosa and intestinal-type gastric adenocarcinoma, and that intestinal metaplasia samples presented an expression pattern similar to that in intestinal-type gastric adenocarcinoma. This micro RNA(mi RNA) has a good discriminatory accuracy between normal gastric samples and(1) intestinal-type gastric adenocarcinoma; and(2) intestinal metaplasia, and regulates the DMNT3 A oncogene. hsa-mi R-135 b is up-regulated in non-atrophic chronic gastritis and intestinal metaplasia samples and down-regulated in normal gastric mucosa and intestinal-type gastric adenocarcinoma samples. Non-atrophic chronic gastritis and intestinal metaplasia are significantly different from normal gastric mucosa samples. hsa-mi R-135 b expression presented a greater discriminatory accuracy between normal samples and gastric lesions. This mi RNA was associated with Helicobacter pylori presence in non-atrophic chronic gastritis samples and regulates the APC and KLF4 tumour suppressor genes.CONCLUSION: Our results provide evidence of epigenetic alterations in non-atrophic chronic gastritis and intestinal metaplasia and suggest that hsa-mi R-29 c and hsa-mi R-135 b are promising biomarkers of gastric carcinogenesis. | Amanda Ferreira Vidal Aline MP Cruz Leandro Magalhães Adenilson L Pereira Ana KM Anaissi Nélisson CF Alves Paulo JBS Albuquerque Rommel MR Burbano Samia Demachki Ândrea Ribeiro-dos-Santos | 2016 | World Journal of Gastroenterology2016，22，6： | 7 |
| 18 | Reduction of atherosclerosis in cholesterol-fed rabbits and decrease of expressions of intracellular adhesion molecule-1 and vascular endothelial growth factor in foam cells by a water-soluble fraction of Polygonum multiflorum显示文摘 | Yang PY Almofti MR Lu L Kang H Zhang J Li TJ Rui YC Sun LN Chen WS | 2006 | 第二军医大学学报2006，27，6： | 7 |
| 19 | Leukemia:研究鉴定出与34种AML白血病亚群相关联的基因突变显示文摘针对成年急性髓细胞白血病(acute myeloid leukemia,AML)患者的一项新的大型研究将80种癌症相关基因突变与5种AML亚型相关联。这5种AML亚型可通过特异性的染色体异常加以确定。在未来,这些发现可能有助指导基因突变测试和治疗决策。 | A-K Eisfeld K Mrózek J Kohlschmidt D Nicolet S Orwick C J Walker K W Kroll J S Blachly A J Carroll J E Kolitz B L Powell E S Wang R M Stone A de la Chapelle J C Byrd C D Bloomfield | 2017 | 现代生物医学进展2017，17，15： | 7 |
| 20 | 从远志中分离鉴定出1种多巴胺受体活性化合物显示文摘目的从中药远志中提取脑内多巴胺(DA)受体活性化合物。方法用体外的放射配体-受体结合和高压液相法提取、分离、纯化DA受体活性化合物,用核磁共振和质谱仪确定活性化合物的结构。结果提取、分离到1种四氢非洲防己胺的活性化合物。其在体外可抑制3H-SCH23390(DA1受体亚型)和3H-螺呱隆(DA2受体亚型)与大鼠纹状体细胞膜的结合,其IC50值分别为(0.75±0.08)μmol/L和(0.92±0.10)μmol/L。这种活性化合物还能抑制3H-呱唑嗪和大鼠大脑膜α1-肾上腺素受体的结合(IC50值为46μmol/L),但是不能改变3H-QNB及3H-muscimol对膜的结合。Scatchardplot分析显示此化合物对3H-SCH23390和3H-螺呱隆与纹状体细胞膜的结合的抑制作用是通过竞争性与非竞争性混合机制而实现的。结论远志中提取到的四氢非洲防己胺是脑内多巴胺受体的活性化合物,它的抑制作用是通过竞争性与非竞争性混合机制而实现的。 | 沈行良 Witt MR Dekermendjian K Nielsen M | 2004 | 海南医学院学报2004，10，3： | 7 |
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