益肾活血法联合中医周期疗法治疗抗精子抗体阳性不孕患者的临床观察

【目的】观察益肾活血法联合中医周期疗法治疗抗精子抗体(AsAb)阳性不孕的临床疗效。【方法】采用随机数字表法将86例患者随机分为治疗组和对照组各43例。治疗组采用益肾活血法联合中医周期疗法治疗,对照组采用强的松治疗,2组均以治疗1个月为1个疗程,共治疗3个疗程。观察2组AsAb转阴时间、转阴率及转阴后1年内的妊娠情况。【结果】治疗组转阴率为72.50%,对照组为78.95%,2组比较,差异无统计学意义(P>0.05)。治疗组的妊娠率为45.0%,对照组为23.7%,治疗组妊娠率显著高于对照组,2组比较差异有统计学意义(P<0.05)。【结论】益肾活血法联合中医周期疗法治疗抗精子抗体阳性不孕患者疗效显著,值得进一步研究。     

辛伐他汀对急性脑卒中患者血清脂联素和不对称性二甲基精氨酸水平的影响

目的 探讨辛伐他汀对急性脑卒中患者血清脂联素和不对称性二甲基精氨酸(ADMA)水平的影响.方法 选择急性脑卒中患者90例,按随机数字表法分为常规治疗组和干预治疗组,每组45例.计算两组患者脑梗死体积和临床神经功能缺损程度评分.酶联免疫吸附试验法检测两组治疗前后血清脂联素和ADMA水平.比较两组治疗前后脂联素和ADMA水平的变化,并分析其与脑梗死体积和临床神经功能缺损程度评分的相关性.结果 治疗前两组患者脂联素和ADMA水平比较差异无统计学意义(P＞0.05)；治疗后两组患者脂联素水平明显升高,ADMA水平明显下降,与治疗前比较差异有统计学意义(P＜0.05).但是干预治疗组治疗后脂联素水平明显高于同期常规治疗组,ADMA水平明显低于同期常规治疗组,差异有统计学意义[(5.92±0.15)mg/L比(4.51±0.13)mg/L,(0.96±0.13)μmol/L比(1.08±0.15)μ mol/L] (P＜ 0.05).等级相关分析结果显示患者治疗前脂联素水平与脑梗死体积和临床神经功能缺损程度评分均呈负相关,相关系数分别为-0.75和-0.59,P值均＜0.05.患者治疗前ADMA水平与脑梗死体积和临床神经功能缺损程度评分均呈正相关,相关系数分别为0.68和0.71,P值均＜0.05.结论 辛伐他汀能有效地升高急性脑卒中患者脂联素水平和降低ADMA水平,改善患者预后.     

Differential miRNA profile on photoaged primary human fibroblasts irradiated with ultraviolet A

Photoaging is cell aging caused by long-wave ultraviolet (UVA) radiation which is the main cause of human skin aging produced by exogenous environment. As an endogenous noncoding small RNA, microRNAs (miRNAs) are sensitive to environmental changes, and the expression change of miRNAs is an important manner to adjust to environment. However, the miRNA profile on photoaged human skin irradiated with UVA remains unknown and whether UVA responsive miRNAs participate in the UVA-caused stress reaction of skin cells is also unclear. In this study, we established an in vitro photoaging model with UVA-radiated human primary cultured fibroblasts, which could mimic UVA-induced photoaging of skin. Differentially expressed miRNAs during photoaging, including five up- and seven downregulated miRNAs, were found by microarray analysis and were verified by quantitative real-time PCR. With bioinformatics methods, the predicted miRNA targets were suggested to be associated with pathways in cancers. Among the significantly UVA-downregulated miRNAs, miR-146a overexpression antagonized the UVA-induced proliferation inhibition and suppressed the upregulation of aging-related genes in photoaging of our model. Western blot and luciferase assay showed that Smad4 might be a target of miR-146a to exert miR-146a functions during photoaging. Therefore, UVA radiation-induced photoaging results in specific patterns of miRNA response and miR-146a are able to antagonize UVA-caused photoaging partially through targeting Smad4.     

高血压患者中Hcy增高在不同年龄段及性别的构成比调查

目的通过对佛山地区人群的调查,了解高血压患者中同型半胱氨酸(Hcy)增高在不同年龄阶段所占的比例,探究Hcy增高在不同年龄阶段的重要性。方法使用试剂盒酶法对各年龄阶段高血压患者血中的Hcy水平进行测定。结果各年龄段高血压的患者Hcy增高率差异有统计学意义(P<0.05),男女之间有显著性差异(P<0.01)。结论不同年龄阶段高血压患者Hcy增高率中,年龄越大,其比例越高。41~60岁之间没显著差异,且41岁以后Hcy增高率明显加大,在对高血压患者更具诊断性意义。     

Heterogeneity in Rhesus Macaque Complement Factor H Binding to Meningococcal Factor H Binding Protein (FHbp) Informs Selection of Primates To Assess Immunogenicity of FHbp-Based Vaccines

Neisseria meningitidis causes disease only in humans. An important mechanism underlying this host specificity is the ability of the organism to resist complement by recruiting the complement downregulator factor H (FH) to the bacterial surface. In previous studies, binding of FH to one of the major meningococcal FH ligands, factor H binding protein (FHbp), was reported to be specific for human FH. Here we report that sera from 23 of 73 rhesus macaques (32%) tested had high FH binding to FHbp. Similar to human FH, binding of macaque FH to the meningococcal cell surface inhibited the complement alternative pathway by decreasing deposition of C3b. FH contains 20 domains (or short consensus repeats), with domains 6 and 7 being responsible for binding of human FH to FHbp. DNA sequence analyses of FH domains 6 and 7 from macaques with high or low FH binding showed a polymorphism at residue 352 in domain 6, with Tyr being associated with high binding and His with low binding. A recombinant macaque FH 6,7/Fc fragment with Tyr352 showed higher binding to FHbp than the corresponding fragment with His352. In previous studies in human FH transgenic mice, binding of FH to FHbp vaccines decreased protective antibody responses, and mutant FHbp vaccines with decreased FH binding elicited serum antibodies with greater protective activity. Thus, macaques with high FH binding to FHbp represent an attractive nonhuman primate model to investigate further the effects of FH binding on the immunogenicity of FHbp vaccines.