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71.
目的:探讨指背腱膜滑动距离与近侧指间关节(PIP)屈曲关系,为临床修复提供解剖学基础。方法:男性成人新鲜尸体标本10侧30指(示、中、环指各10指),切除手指皮肤,不破坏腱鞘、屈肌支持带、伸肌支持带、内在肌及外在肌,使肌腱保持正常的生理状态,分别测量各指中央束(CS)、侧束(LB)在PIP屈曲45°和90°时的滑动距离。结果:当PIP屈曲45°时,CS滑动距离为(2.7±0.4)mm,LB滑动距离为(2.8±0.6)mm;当PIP屈曲90°时,CS滑动距离为(4.3±0.7)mm,LB滑动距离为(4.8±0.6)mm。结论:指背腱膜滑动距离减少,严重影响手指的屈曲功能。对于指背腱膜的新鲜性损伤应予以精确修复;对于陈旧性损伤的修复应确保指背腱膜的正常滑动范围。 相似文献
72.
本文观察了体外丙二醛(MDA),铜离子(Cu2+氧化修饰的脂蛋白(a)[Lp(a)]结构和生物学性质的变化。氧化修饰Lp(a)过氧化程度增高,负电荷增加,易被巨噬细胞—清道夫受体识别和摄取。MDA修饰Lp(a)出现新的MDA-LDL位点;同纤维蛋白溶酶原(Pg)竞争抑制试验显示氧化、修饰Lp(a)同Pg同源性增加。提示载脂蛋白(a)状态同动脉粥样硬化的病理过程有关。 相似文献
73.
He Z Dong Q Zhuang H Song S Peng G Luo G Dwyer DE 《Clinical and diagnostic laboratory immunology》2004,11(4):792-794
The sensitivities and specificities of an immunofluorescence assay and an enzyme immunoassay for detection of antibodies specific for severe acute respiratory syndrome coronavirus (SARS-CoV) were compared for 148 laboratory-confirmed SARS cases. The appearance and persistence of SARS-CoV-specific antibodies were assessed, with immunoglobulin G detected in 59% of samples collected within 14 days and persisting for 60 to 95 days after the onset of illness. 相似文献
74.
75.
Retrospective analysis of non-A-E hepatitis: possible role of hepatitis B and C virus infection 总被引:6,自引:0,他引:6
He Z Zhuang H Wang X Song S Dong Q Yan J Buehring GC Luo G 《Journal of medical virology》2003,69(1):59-65
In an effort to determine the cause of non-A-E hepatitis, a retrospective study was undertaken on a group of patients with hepatitis but without serological infection markers of hepatitis viruses A-E. A total of 60 patients admitted to Beijing Ditan Hospital during the period of September 1997 and September 1999 were chosen for this study. These patients were diagnosed as either acute or chronic hepatitis, but no serological markers of hepatitis viruses A-E were detected. Since TT virus (TTV), human parvovirus B19 (B19), SEN virus (SENV), and GB virus C/HGV were reported to be associated with hepatitis, attempts were made to detect the presence of these viruses in the sera of patients with non-A-E hepatitis by a nested polymerase chain reaction (nPCR) method. Also, more sensitive nPCR and RT-nPCR methods were used to determine HBV DNA and HCV RNA in these patients. Results derived from these analyses demonstrate that HBV DNA was detected in most of these patients (47/60, 78.3%), suggesting that HBV infection played a major role in occult non-A-E hepatitis and detection of HBV DNA by more sensitive PCR methods such as nPCR should be considered for diagnosis of HBV infection. In addition, HCV RNA was detected in three (5%) of these patients. However, GBV-C (HGV) RNA was not detected, and TTV, B19, and SENV appear not to be associated with non-A-E hepatitis, as the prevalence rates of these viruses in patients with non-A-E hepatitis were similar to those in patients with viral hepatitis A-E. The results from this study indicate that co-infection of TTV or B19 with HBV did not increase the severity of the disease. 相似文献
76.
Analysis of loss of heterozygosity on chromosome 11q13 in atypical ductal hyperplasia and in situ carcinoma of the breast. 总被引:3,自引:2,他引:3
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R. F. Chuaqui Z. Zhuang M. R. Emmert-Buck L. A. Liotta M. J. Merino 《The American journal of pathology》1997,150(1):297-303
Identical allelic loss in invasive and adjacent in situ ductal breast carcinoma (DCIS) on chromosome 11q13 has been previously reported, providing molecular evidence for the progression of DCIS to invasive tumor. In this study we analyzed loss of heterozygosity (LOH) on 11q13 (PYGM, INT-2) in atypical ductal hyperplasia (ADH) and various histological types of in situ carcinomas of the breast in patients without invasive cancer. Twenty-four cases of in situ carcinoma and twelve cases of ADH were studied. Tissue microdissection of normal, hyperplastic, and tumor cells from fixed, paraffin-embedded sections was performed, and DNA was extracted for polymerase chain reaction. In situ tumors included both high- and low-grade DCIS. LOH was identified in six of twenty-two (27.3%) in situ tumors and in one of eleven (9%) ADH cases. Within in situ carcinomas, LOH was identified in six of seventeen (35%) high-grade DCIS but in none of six low-grade DCIS. The present results show that LOH at 11q13 occurs in an appreciable proportion of high-grade DCIS, although the rate is substantially less than in patients with concomitant DCIS and invasive tumor. LOH was identified less frequently in low-grade in situ tumors and ADH, suggesting that a putative tumor suppressor gene(s) located on chromosome 11q13 may be involved in the transition from early preneoplastic lesions to invasive breast cancer. 相似文献
77.
基于心肌声学造影(MCE)的心肌微循环定量分析系统,对实时MCE图像进行处理,通过非线性回归分析方法计算出心肌供血区内心肌血容量、血流速度、血流量以及三者的心内、外膜层跨壁梯度等冠脉微循环临床诊断指标,能有效满足临床需求,实现了实时MCE的定量分析. 相似文献
78.
制备盐酸恩丹西酮缓释片并对影响释药的因素进行考察。以羟丙甲纤维素(HPMC)为骨架材料制备了盐酸恩丹西酮缓释片,通过正交设计试验优选最佳处方和工艺。对影响释药的因素,如HPMC的黏度和用量、填充剂的种类、制片工艺、润湿剂及释放介质pH等进行了考察。盐酸恩丹西酮缓释片体外释药符合Higuchi方程,HPMC的黏度、填充剂的种类及测定释放度的转速对该缓释片的释药几乎无影响,而制片工艺、润湿剂及释放介质pH值对缓释片释药影响较大。盐酸恩丹西酮缓释片在体外12h缓释效果较好。 相似文献
79.
H Zhuang A G Coulepis S A Locarnini J Kaldor J A Marshall I D Gust 《Journal of medical virology》1983,11(4):267-276
During a search for the aetiological agent of non-A non-B hepatitis, a precipitating antigen was detected in the sera of some patients during the acute phase of their illness. The antigen was detected by agar gel diffusion using antibody from convalescent sera obtained from patients with non-A non-B hepatitis, and from haemophiliac sera. The antigen was usually detected early in the patient's illness, disappearing as liver function tests returned to normal. In some patients specific antibody appeared during the convalescent phase of the disease. The antigen does not appear to be specific for non-A non-B hepatitis, as it could be detected with similar frequency in patients with hepatitis A or hepatitis B and some patients with other liver disorders. Biochemical and biophysical studies suggest that the antigen is probably an abnormal lipoprotein produced as a result of acute liver damage. 相似文献
80.
Identification of novel regions of allelic loss from a genomewide scan of esophageal squamous-cell carcinoma in a high-risk Chinese population 总被引:17,自引:0,他引:17
Hu N Roth MJ Polymeropolous M Tang ZZ Emmert-Buck MR Wang QH Goldstein AM Feng SS Dawsey SM Ding T Zhuang ZP Han XY Ried T Giffen C Taylor PR 《Genes, chromosomes & cancer》2000,27(3):217-228
Esophageal cancer is one of the most common fatal cancers worldwide. Deletions of genomic regions are thought to be important in esophageal carcinogenesis. We conducted a genomewide scan for regions of allelic loss using microdissected DNA from 11 esophageal squamous-cell carcinoma patients with a family history of upper gastrointestinal tract cancer from a high-risk region in north central China. Allelic patterns of 366 fluorescently labeled microsatellite markers distributed at 10-cM intervals over the 22 autosomal chromosomes were examined. We identified 14 regions with very high frequency (>/= 75%) loss of heterozygosity (LOH), including broad regions encompassing whole chromosome arms (on 3p, 5q, 9p, 9q, and 13q), regions of intermediate size (on 2q, 4p, 11p, and 15q), and more discrete regions identified by very high frequency LOH for a single marker (on 4q, 6q, 8p, 14q, and 17p). Among these 14 regions were 7 not previously described in esophageal squamous-cell carcinoma as having very high frequency LOH (on 2q, 4p, 4q, 6q, 8p, 14q, and 15q). The very high frequency LOH regions identified here may point to major susceptibility genes, including potential tumor suppressor genes and inherited gene loci, which will assist in understanding the molecular events involved in esophageal carcinogenesis and may help in the development of markers for genetic susceptibility testing and screening for the early detection of this cancer. Genes Chromosomes Cancer 27:217-228, 2000. Published 2000 Wiley-Liss, Inc. 相似文献