司帕沙星对试验动物的一般药理研究

小鼠单次经口灌服司帕沙星4、20和100mg/kg后,动物的活动正常,未出现兴奋的抑制作用;小鼠单次经口灌服司帕沙星4、20和100mg/kg,与戊巴比妥钠镇静催眠无明显协同作用;给猫静脉注射司帕沙星4、16和64mg/kg,对动物呼吸和心血管系统无明显影响。     

Association of the CTLA-4 gene with rheumatoid arthritis in Chinese Han population

Cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) is important for downregulation of T-cell activation, and CTLA-4 gene polymorphisms have been implicated as risk factors for rheumatoid arthritis (RA). Previous studies of the association between the +49 polymorphism of the CTLA-4 gene in RA have provided conflicting results. In order to determine association of the CTLA-4 gene with RA in Chinese Han population, we used denaturing gradient gel electrophoresis (DGGE) to genotype polymorphisms of four SNPs (MH30, +49, CT60 and JO31) of the CTLA-4 gene in 326 RA patients and 250 healthy controls. Furthermore, meta-analysis of all available studies relating +49 polymorphism to the risk of RA was performed to confirm the disease association. Among the SNPs examined, the genotype frequencies of CTLA-4 +49 and CT60 in RA patients differed significantly from controls (P=0.028 and 0.007). In addition, the distribution of four haplotypes constructed by these two SNPs was significantly different between patients and controls (chi(2)=10.58, d.f. =3, P=0.014). The meta-analysis also revealed that in both European and Asian populations, the CLTA-4 +49 G allele was associated with the risk of RA. These results suggested that the CTLA-4 gene might be involved in the susceptibility to RA in the Chinese Han population and both +49 and CT60 of CTLA-4 gene might be the causal variants in RA disease.     

高血压鼠动脉壁去甲肾上腺素含量及形态变化研究

取不同年龄组自发性高血压鼠的胸主动脉，颈劝脉和基底动脉，用高效液相色谱－电化学检测仪测定其去甲肾上腺素含量，并取脑软膜血管作超微结构观察，结果显示：各组高血压鼠动有脉壁去甲肾上腺素含量均下降，颈内动脉更明显；脑血管内弹性膜部分断裂，平滑肌细胞有空不包变性等。     

The Athletic Prevention Programming and Leadership Education (APPLE) Model: Developing Substance Abuse Prevention Programs

Alcohol and other drug (AOD) abuse affects every sector of society, and student-athletes are no exception. Because many factors affecting athletes do not affect other students, athletic departments commonly approach prevention through AOD education. Different educational approaches are described in this article, particularly the Athletic Prevention Programming and Leadership Education (APPLE) model. Project APPLE is designed to enable an athletic department to systematically analyze its AOD prevention in seven areas: recruitment practices, expectations and attitudes, education and AOD programs, policies, drug testing, discipline, and referral and counseling. Because athletic trainers often are involved in this process, this article should help them to design more effective AOD programs.     

采用MDA-MB-231细胞膜进行表皮生长因子受体活性的检测

目的　探讨能否直接利用肿瘤细胞膜进行表皮生长因子受体 (Epidermalgrowthfactorreceptor,EGFR)催化活性检测。方法　首先筛选出EGFR基因表达水平相对较高的细胞株MDA MB 2 31,通过差速离心制备细胞膜 ,采用Westernblotting检测EGFR催化磷酸化的程度。结果　底物被磷酸化 ,加入特异性拮抗剂AG14 78后 ,磷酸化被抑制。结论　利用肿瘤细胞膜检测EGFR活性的设想是成立的 ,并且其方法简便、经济。     

中西医结合治疗眼底病的实验和临床研究

眼底病是一种复杂的致盲率很高的眼部疾病 ,包括视网膜脱离、视网膜玻璃体出血和增殖性玻璃体视网膜病变 (PVR)等疾病。本文采用中西医结合的治疗方法对动物模型和 1998～ 2 0 0 0年此类眼病患者进行研究 ,疗效显著 ,使眼底病的治愈率有了很大幅度的提高。中医药对眼底病的治疗常用活血化瘀复方治疗 ,对于从动物实验及临床两方面同时进行中西医结合的系统治疗研究 ,尚未见有报道。     

白细胞进入腹腔是引起蛋白质经腹腔丢失的关键

目的为了研究细菌性腹膜炎时经腹腔蛋白质丢失的机制,阐明白细胞移行与蛋白质丢失的关系。方法给兔腹腔内注射大肠杆菌(E.coil)4×106CFU+生理盐水(35ml/kg),做成急性腹膜炎动物模型。通过测定实验6或8h期间腹透液中白细胞总数(WBC)及中性粒细胞(PMNs)计数情况以及腹膜对蛋白质的通透性(蛋白质D/P比值)。设立了两个系列的实验系列一,应用氮介(mustine),1.2mg/kg,实验前3天静脉注射,以耗尽循环血中的白细胞;系列二,用单克隆抗体(mAb)60.32mg/kg,实验前5min静脉注射,以阻滞PMNs上的粘附分子CD18,从而抑制PMNs向腹腔移行。同时设立了阳性对照组(即腹膜炎组)及阴性对照组(无腹膜炎组)。结果系列一中mustine降低87%循环血中白细胞及93%循环血中PMNs,此时即使腹腔内注射细菌,白细胞向腹腔的移行及腹腔蛋白质的渗出均较未注射mustine的腹膜炎组明显降低,而与无腹膜炎的正常对照组结果相似。系列二,静脉注射mAb60.3同样也明显降低白细胞及PMNs向腹腔的移行及经腹腔蛋白质的丢失。结论急性细菌性腹膜炎时白细胞向腹腔移行导致了经腹腔蛋白质的丢失。     

A comprehensive reconstruction strategy for moderate to severe faciocervical scar contractures

The focus of treatment of faciocervical scar contractures includes cervical reconstruction and elimination of hypertrophic scars. Unfortunately, most previous studies have neglected the esthetic appearance of scars. In this study, we tried to combine surgical therapy and ultrapulse fractional CO₂ laser (UFCL) to eliminate facial scars while restoring neck reconstruction and to establish the optimal conventional management for faciocervical contracture. Thirty-eight individuals were enrolled and divided into two groups. After received cervical release surgeries, comprehensive UFCL therapy group received treatment of UFCL at 3-month intervals, silicone sheets, and pressure garments, while another group only received treatment of silicone sheeting and compression. Twelve months after the termination of therapy, faciocervical scars of both two groups were assessed by two uninvolved physicians according to the Vancouver Scar Scale (VSS), and patients’ satisfaction survey was also recorded by the study participants using a patient four-point satisfaction scale. Thirty-six patients completed the treatment and follow-up. The results show that the VSS scores of both two groups decreased after 12 months, but comprehensive UFCL therapy group dropped more significantly than the conventional treatment group at follow-up session, which was statistically significant (P?<?0.001), and the patient satisfaction was higher than that of the conventional treatment group. This comprehensive treatment combined of surgery, UFCL, silicone sheets, and pressure garments works as an effective and esthetic reconstruction for moderate to severe postburn faciocervical scar contractures.