补肾解毒方抗脑老化机制的体外研究

摘要 目的：探讨补肾解毒方含药血清抗脑老化的体外分子机制。方法：采用过氧化氢诱导制备人脑胶质细胞衰老模型，使用补肾解毒方含药血清干预以期达到对人脑胶质细胞衰老模型的治疗效果，CCK-8法检测细胞活力，采用β-半乳糖苷酶染色法观察衰老阳性细胞比例，活性氧荧光探针法检测胞内活性氧水平，流式细胞术检测细胞凋亡比例，qPCR检测细胞中衰老相关基因CXCL1、FOXO1、P16、IL1A、IGFBP3、IL6的转录水平。结果：补肾解毒方含药血清可显著增强细胞活力（P＜0.05），显著减少过氧化氢诱导的衰老阳性细胞比例（P＜0.05），降低活性氧水平，显著减少凋亡细胞比例（P＜0.01），下调IL1A、IL6、CXCL1、IGFBP3、FOXO1转录水平。结论：补肾解毒方含药血清可显著抑制过氧化氢诱导的人脑胶质细胞衰老，其可能与增强细胞活力、抗炎、抗凋亡、降低胞内活性氧水平等有关。     

In vivo therapeutic potentiality of red seaweed,Asparagopsis (Bonnemaisoniales,Rhodophyta) in the treatment of Vibriosis in Penaeus monodon Fabricius

The crude extract of the red seaweed, Asparagopsis sp. was evaluated for in vivo antibacterial activity against the shrimp vibrio pathogens. The algal extract was rationalized with commercial shrimp feed and orally administered for different duration of time followed by the artificial bacterial challenge experiment. In dose titration experiments, the oral administration of Asparagopsis sp. at a dosage of 850 mg kg^–1 of biomass was highly efficacious in the treatment of natural infestations of Vibriosis in Penaeus monodon. The results of the confirmatory dose experiment revealed that the prophylactic treatment with moderate dose of 850 mg kg^–1 of biomass day^–1 for four weeks followed by 14 days of post infection therapy was highly effective in controlling Vibrio infection in shrimps. Moreover, results of the percent survival index and microbiological analysis clearly show that Asparagopsis extract incorporated medicated feed had broad therapeutic potential for managing shrimp Vibriosis. In addition, in vivo trials and results obtained in this work are based on the crude organic extract sourced from an unidentified Asparagopsis cryptic lineage, therefore further molecular analysis to identify the species will be required.     

中药"神曲"对肠道菌群失调小鼠调整和保护作用的观察

目的研究中药"神曲"在肠道微生态失调中的调整和保护作用.方法使用中药大黄煎剂给小鼠灌胃8 d,造成肠道菌群失调病理模型,将菌群失调小鼠分为5组模型组、自然恢复组、丽珠肠乐组、同仁堂神曲组和复方神曲组.实验动物经不同因素处理后,取结肠内容物、粪便进行菌群培养;取回肠组织进行各项病理指标的测定;取各组小鼠肝脏和结肠标本进行光镜观察.结果治疗组肠道菌群与正常对照组相比无明显变化,与自然恢复组相比差异有显著性(P＜0.05);各治疗组超氧化物歧化酶(superoxide dismutase,SOD)、丙二醛(methyl-di-alde-hyde,MDA)、黄嘌吟氧化酶(xanthine oxidase,XOD)和一氧化氮(NO)水平与正常组相比差异无显著性,与自然恢复组相比差异有显著性(P＜0.05);治疗组肝脏和结肠与正常对照组相比无明显变化,其与自然恢复组相比差异有显著性.结论中药"神曲"对肠道菌群失调动物具有调整和保护作用.