Cerebrospinal fluid S100B correlates with brain atrophy in Alzheimer's disease

S100B is a predominantly astrocytic protein with dose-dependent cytotoxic and neurotrophic properties encoded on chromosome 21q22.3. Concentrations of S100B were measured in the cerebrospinal fluid (CSF) of 31 patients with Alzheimer's disease (AD), 36 patients with frontotemporal lobe dementia (FTLD) and 49 patients with other non-inflammatory neurological diseases. Additional CSF S100B concentrations were correlated with normalised brain volume measurements in AD and FTLD. CSF S100B was significantly higher in AD (Mean+/-standard deviation=0.4+/-0.2 ng/ml) and FTLD (0.42+/-0.19 ng/ml) patients when compared with control subjects (0.25+/-0.08, P<0.001). In patients with AD, S100B correlated negatively with normalised brain volume (R(S)=-0.53, P<0.001). No such correlation was found for FTLD patients. This study supports the concept that S100B is of pathological relevance for degeneration of the central nervous system in AD.     

骨髓增生异常综合征免疫异常的表型

本文探讨免疫异常表型对骨髓增生异常综合征 (MDS )分型诊断及鉴别诊断价值。选用多种单克隆抗体 ,用流式细胞测定分析仪 ,对 4 9例MDS、 5 0例良性血液病患者 (贫血、粒细胞减少症、血小板减少性紫癜、感染等 )的骨髓细胞免疫表型进行测定分析研究。结果MDS 89 3%以上有二系或三系免疫表型异常 ,其中CD7、CD19、CD13、CD14、CD33、CD34、HLA DR免疫标志变化最大 ,明显高于正常对照组 (P <0 0 1) ;髓系抗原表达明显增高 ,而且随MDS进展恶化 ,FAB亚型抗原表达出现规律性变化 ,RA→RAS→RAEB→向RAEB T转化 ,较早期髓系抗原表达 (如CD13、CD33)逐渐增加 ,而较晚期髓系抗原表达 (如CD15、CD14 )逐渐减少 ;同时伴淋系抗原表达逐渐减少 ;骨髓干细胞 /祖细胞表面抗原 (如CD34、HLA DR ) ,随着MDS恶化发展 ,有逐渐明显增加异常表现 ,而且CD34、HLA DR早期抗原表达增高者 ,常常预后较差 ,易于转化成白血病。结论MDS患者骨髓细胞免疫异常表型 ,有利于MDS诊断、分型诊断及鉴别诊断 ,并对治疗、预后判断有重要指导价值[1,2 ,5] 。     

五子衍宗方合逍遥散加减对男子弱精症的临床疗效

目的:观察五子衍宗方合逍遥散加减对男子弱精症的临床疗效。方法:136例弱精症患者随机分为治疗组(n=95)和对照组(n=41)。治疗组口服五子衍宗方合逍遥散加减;对照组只口服五子衍宗丸,连服三个月(一个疗程)。比较两组治疗前后精子活力、畸形率和密度,并比较两组临床疗效。结果:治疗前两组精子活力、畸形率和密度均无统计学差异(P0.05)。治疗1个疗程后,两组a级精子百分率和a+b级精子百分率均较治疗前增加(P0.01),治疗组较对照组增加更显著(P0.01);两组精子畸形率较治疗前降低(P0.01),治疗组降低更明显(P0.01);两组精子密度较治疗前升高(P0.01),治疗组升高更显著(P0.01)。治疗组临床总有效率明显高于对照组(P0.05)。结论:五子衍宗方合逍遥散加减对男子弱精症有较好疗效。     

家庭婚姻状况与家庭功能、中学生自尊及行为问题的关系

目的:考查家庭的婚姻状况对中学生的自尊和行为产生怎样的影响.方法:采用家庭功能量表(FAD)、行为问题量表(BPS)和自尊量表(SES),对北京市6所中学的144个离婚家庭、75个再婚家庭以及作为对比组的139个在婚家庭的学生在这三个量表的各个维度上进行了对比.结果:不同家庭婚姻状况中,中学生问题行为(F=6.607,P=0.002)与家庭功能的问题解决(F=3.620,P=0.028)存在显著的差异,这些差异在男生和女生中的表现差异明显;不同婚姻状况家庭之间以及男女生之间自尊的差异不显著;多元线性回归分析中,自尊、家庭婚姻状况和家庭功能多方面因素对于中学生问题行为有一定的解释力(Radj2=19.5%).结论:离婚家庭中的中学生受到的消极影响最大,产生的问题行为也最多;在离婚和再婚家庭中,男生受到的消极影响显著大于女生.     

Simian immunodeficiency virus-induced CD4+ T cell deficits in cytokine secretion profile are dependent on monkey origin

Facets of the immune response early after human immunodeficiency virus (HIV) infection influence the course of disease. In the simian immunodeficiency virus (SIV)-rhesus monkey system, a global dysfunction of CD4(+) T cell cytokine secretion was reported to develop early after infection [McKay PF, Barouch DH, Schmitz JE, Veazey RS, Gorgone DA, Lifton MA, Williams KC, and Letvin NL: J Virol 2003;77:4695-4702]. Because differences have been found in SIV pathogenesis depending on the origin of the monkeys, we investigated the correlation between animal background, defined by country of origin (India or China), and circulating T cell cytokine secretion as well as cycling ability within the first 3 mo of SIV infection. An early loss of CD4(+) T cells that produce interferon (IFN)-gamma and interleukin (IL)-2, those that produce IFN-gamma but not tumor necrosis factor (TNF)-alpha, as well as those that do not express IFN-gamma but can express IL-2 or TNF-alpha, was observed in animals of Indian, but not of Chinese, origin after SIV infection. After infection CD4(+) T cells in Chinese macaques developed an increased proliferating pool of T cells compared with Indian animals. These data reveal host diversity in the global effects of SIV infection on functional subsets of immune cells, which can add to a better understanding of differences observed in populations from diverse ethnic origins.     

小针刀治疗肛裂的临床研究

目的 通过随机对照研究,比较小针刀侧方内括约肌切断术和后方内括约肌切断术对肛裂治疗的疗效和安全性.方法 观察96例肛裂患者,其中48例采用小针刀侧方内括约肌切断术(观察组),48例采用后方内括约肌切断术(对照组),比较两组疗效、术后疼痛评分、术后并发症、恢复正常生活时间、伤口愈合时间、伤口愈合等级和术后1年复发率.结果...