一种自动优选标准型股骨柄的方法

髋关节置换手术中采用标准型假体时,术前只能大致选取假体,术中还要预备多个假体,往往手术时间增长。为了解决这一问题,本文提出一种利用计算机优选标准型髋关节假体的方法。从X线片中获取患者股骨解剖数据。利用这些解剖数据和股骨近端截面平均数据库三维重建患者股骨近端,重建出的股骨近端模型使优选标准假体成为可能。理论分析表明,该方法切实可行。     

Association of genetic polymorphism in plasminogen activator inhibitor-1 gene with endometrial hypoplasia in infertile women

OBJECTIVE: To investigate the relationship between the plasminogen activator inhibitor (PAI-1) polymorphisms and endometrial hypoplasia in infertile women. METHODS: The study was conducted in 105 primary infertile patients with endometrial hypoplasia diagnosed by pathology and the thickness of endometrium by B-mode ultrasound and 85 controls who were not pregnant and had normal fertility. The -675 4G/5G polymorphism in the PAI-1 gene was detected by polymerase chain reaction-restriction fragment length polymerphim analysis. RESULTS: The frequencies of 4G/4G genotype and 4G allele of the PAI-1 gene were higher in the patient group (48.6% and 66.2%) than in the normal controls (22.4% and 47.1%) (P < 0.01). ThePAI-1 4G/4G genotype was significantly associated with endometrial hypoplasia in the infertile patients (OR=4.9, 95% CI: 2.10-10.12). CONCLUSION: The present findings suggest that the 4G/5G polymorphism of the PAI-1 gene was associated with endometrial hypoplasia in infertile patients.     

A new haplogroup pattern displayed in Fujian Han in China

Human Y-chromosomal binary polymorphisms have been considered to preserve the paternal genetic legacy and provide evidence on human evolution and the genetic relationships among and demographic history of different populations. To reveal the genetic origin and immigration of the Fujian Han, 13 binary markers on the Y chromosome were used to screen Fujian Han by allele-specific polymerase chain reaction. The results indicated that the M₉G marker was highly prevalent (96.20%), suggesting a significant genetic drift. In addition, M₁₂₂C frequency was only 22.78%, and M₄₅A and M₁₀₃T were default. The distinctive haplogroup frequencies (H₁, H₅, and H_6/7/8) imply that the haplogroup pattern is a relatively ancestral and interim type. Received: October 13, 2001 / Accepted: December 3, 2001     

社区精神分裂症综合式家庭干预对照研究

目的：了解综合式家庭干预对社区精神分裂症患者和家属的效果。方法：在宝山区随机抽取186例精神分裂症进行一年的综合式家庭干预对照研究,干预组86例接受综合式家庭干预和常规社区服务,对照组100例仅接受常规社区服务。结果：干预组患者年复发率下降47．3％,社区功能明显改善,干预组家庭对有关疾病知识增长,心理状况改善,照料负担减轻,与对照组比较效果显著。结论：综合式家庭干预对精神分裂症患者家属有良好的效果,应纳入常规社区服务。     

微乳液反应法制备磺胺嘧啶银均匀微晶及其最佳处方评价

目的：应用微乳液反应法制备磺胺嘧啶银均匀微晶,均匀制得的微晶的粒径大小约为2～4um,均匀微晶的结晶性好,纯度高。用均匀设计方法优化条件,制备的均匀的微晶平均粒径大小为2.09um,实验结果达到预测结果要求。结论：用微乳液反应法能获得磺胺嘧啶银均匀微晶。     

大鼠去势后胸腺变化的组织学及超微结构的观察

目的：探讨去势对大鼠胸腺淋巴细胞超微结构与细胞功能的影响。方法：分别于去势大鼠术后2周、4周、6周、8周后,取胸腺组织进行HE染色和透射电镜观察。结果：实验表明去势导致胸腺淋巴细胞结构坏死,或者细胞器严重受损。结论：去势后胸腺淋巴细胞形态和功能均受到损害。     

益母草中阿魏酸的色谱鉴别

目的：鉴别益母草中是否含阿魏酸,方法：采用薄层色谱法和高效液相色谱法鉴别不同提取溶煤制备的样品,结果：从益母草中能检出阿魏酸。结论：益母草中可能含游离的阿魏酸,以5％Na2CO3溶液替代药典中的甲醇提取,方法简化,稳定性高,重现性好。     

Mechanism of Graft Damage Caused by NTPDase1-activated Macrophages in Acute Antibody-Mediated Rejection

ObjectivesTo investigate the effect and mechanism of macrophage activation and graft damage caused by nucleoside triphosphate diphosphohydrolase 1 (NTPDase1) in acute antibody-mediated rejection (AMR).MethodsAcute AMR was induced in different skin-grafted nude mouse models with wild-type NTPDase1 expression, transgene-enhanced NTPDase1 expression, or NTPDase1 gene knockout. Several methods (eg, real-time fluorescence quantitative polymerase chain reaction, high-performance liquid chromatography [HPLC], immunofluorescence, flow cytometry, and luciferin/luciferase assays) were used to study (at the histologic and molecular levels) the extracellular adenosine diphosphate (ADP) concentration, macrophage proliferation, major histocompatibility complex (MHC) class II antigen expression on the surface of macrophages, B-cell activating factor (BAFF) expression in the peripheral blood serum, and the total number of SmIg-positive B cells during acute AMR. The relative activity of NTPDase1 in B cells and epithelial cells, pathologic changes, and the incidence of positive C4d deposition around the capillaries of skin grafts on the different nude mice were studied.ResultsMacrophages proliferated significantly when acute AMR occurred. The higher the NTPDase1 expression level, the lower the extracellular ADP concentration, the expression of MHC class II antigens on the surface of macrophages, the expression of BAFF in the peripheral blood serum, and the total number of SmIg-positive B cells, indicating negative correlations. The relative activity of NTPDase1 in B cells and epithelial cells of the skin graft was different among the different mice. The higher the NTPDase1 expression level, the lower the degree of pathologic damage to the skin graft.ConclusionsImbalance in extracellular ADP degradation by NTPDase1 may promote macrophage activation, and activated macrophages may be an important cause of graft damage.