一株西沙来源软珊瑚共附生真菌Penicillium citrinum（15XS112ZM-18）次级代谢产物及其活性研究

目的 研究1株中国西沙群岛永兴岛海域短指软珊瑚Sinularia cf. molesta共附生真菌Penicillium citrinum (15XS112ZM-18)的次级代谢产物及其生物活性。方法 利用TLC、硅胶柱层析、Sephadex LH-20凝胶柱层析、MPLC、半制备HPLC等方法,对菌株代谢物进行分离纯化;通过1H NMR及13C NMR等波谱学方法,结合相关文献数据,鉴定化合物结构;通过细胞毒活性模型评价化合物抗肿瘤活性。结果 从真菌P. citrinum (15XS112ZM-18)代谢产物中分离得到8个化合物,分别为：penicillenol A1 (1),penicillenol A2 (2),penicillenol B1 (3),penicillenol B2 (4),sorbicillin (5),2",3"-dihydrosorbicillin (6),ergosterol (7)和25–Hydroxyergosta-4,6,8(14),22-tetraen-3-one (8),其中化合物4在30 μmol L-1浓度下对HL-60细胞的抑制率达到100%,其IC50值为22.97 μmol L-1。     

运动对超重/肥胖型葡萄糖耐量减低患者炎症相关蛋白表达水平的影响

目的:研究运动对超重／肥胖型葡萄糖耐量减低(IGT)患者血循环中炎症相关蛋白--白细胞介素-6(IL-6)、可溶性内皮细胞选择素(sE-selectin)水平的影响。方法:60例超重／肥胖型IGT患者入选为期12周的随机对照研究,对照组予以单纯生活方式干预,运动组在此基础上增加运动强度及时间。观察血中IL-6、sE-selectin及体重变化。结果:超重／肥胖型ICT患者的血循环中IL-6、sE-Selectin明显升高,与正常人组比较,差异有显著性意义(P均<0.01)。经12周的干预治疗研究IGT患者体重减轻,运动组减轻体重较对照组更明显4.82±2.12kg,2.35±2.14kg(P<0.01)。伴随着血糖和体重的下降IL-6、sE-selectin明显降低,运动组改善更明显。相关分析显示:sE-selectin与体重指数(BMI)及糖化血红蛋白(HbAlc)之间分别存在显著的正相关(P均<0.01)。结论:超重／肥胖型IGT患者已有炎症因子的异常表达,而运动干预能使这些异常得到显著改善。     

Relationship between aryl hydrocarbon receptor and spermatogenic dysfunction in male patients with varicocele

The main purpose of this project is to verify whether there is a difference in the expression of aryl hydrocarbon receptor (AhR) between varicocele (VC) and normal male semen, and determine whether there is a connection with the parameters of semen analysis. The risk factors of infertility in patients with VC were also studied. Semen samples were collected for semen analysis and Western blot. Logistic regression was used to investigate the risk factors associated with infertility in patients with VC. Men with VC had lower AhR expression compared to healthy men; correlation analysis results showed that: AhR expression in patients with VC group was significantly positively correlated with sperm concentration and sperm motility; significantly negatively correlated with the diameter of spermatic veins during Valsalva and the percentage of abnormal sperm morphology; the research results of related risk factors show that the risk of infertility of patients with grade III is 1.67 times that of patients with grades I and II. For each unit of abnormal sperm morphology, the risk of infertility increases 1.04 times. Sperm concentration, total sperm viability and each unit the expression of AhR protein decreases the risk of infertility by 3%, 9% and 11% respectively.     

阿托伐他汀对冠状动脉慢血流患者内皮功能的影响

目的 研究阿托伐他汀对冠状动脉慢血流患者血脂、炎症标志物、血管内皮功能的影响.方法 用校正的TIMI血流分级（CTFC）方法评价冠状动脉血流速度.于本院2012年8月～2013年10月因胸痛可疑冠心病行冠状动脉造影（CAG）检查的患者中选择诊断为慢血流的患者66例,随机分为他汀治疗组（31例）和常规治疗组（35例）,他汀治疗组给予阿托伐他汀20 mg治疗4周,常规治疗组给予常规药物治疗.另选取36例有胸痛症状但CAG正常的无心脏病患者为正常对照组.采用ELISA法测定内皮素-1（ET-1）及白细胞介素6（IL-6）浓度,采用比色法测定NO水平.结果 他汀治疗组治疗后总胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）、三酰甘油（TG）水平显著降低,与治疗前比较差异有统计学意义（P＜0.05）.他汀治疗组治疗后ET-1、IL-6水平明显降低,NO水平明显升高,与治疗前比较差异有统计学意义（P＜0.05）.结论 短期服用阿托伐他汀治疗能改善冠状动脉慢血流患者的血管内皮功能.     

Two new 12-membered macrolides from the endophytic fungal strain Cladosprium colocasiae A801 of Callistemon viminalis

Two new polyketide metabolites, the 12-membered macrolides 4-hydroxy-12-methyloxacyclododecane-2,5,6-trione (1) and 12-methyloxacyclododecane-2,5,6-trione (2), were isolated from the endophytic fungal strain Cladosprium colocasiae A801 of the plant Callistemon viminalis, together with five known derivatives. Their structures were fully characterized by means of detailed spectroscopic analysis for new structures, and in comparison with published data for known compounds. The antibacterial, cytotoxic, and α-glucosidase inhibitory activities of the new compounds 1 and 2 were evaluated.