单丝聚丙烯合成非吸收齿状线在美容整形应用中并发症的防治及应用改进

目的探讨单丝聚丙烯合成非吸收齿状线在美容整形中的并发症产生的原因及应用方法及技术的改进。方法对近两年的单丝聚丙烯合成非吸收齿状线在美容整形中的应用进行总结与分析。结果改进应用方法后，并发症明显减少，效果加强。结论单丝聚丙烯合成非吸收齿状线在美容整形中应用得当，可减少并发症、取得显著效果。     

CD44v6和组织蛋白酶D表达与食管癌预后的关系

目的　研究CD4 4v6和组织蛋白酶D(cathepsinD ,CD)表达与食管癌生物学行为的关系。方法　应用免疫组化法 ,检测 6 5例食管鳞状细胞癌组织中CD4 4v6和CD表达水平。结果　在食管癌中CD4 4v6和CD表达阳性率分别为 5 8.5 %和 6 4 .6 %。CD4 4v6和CD表达均与肿瘤分级、浸润、淋巴结转移和预后相关。结论　CD4 4v6和CD异常表达与食管癌的病理生物学行为密切相关 ,可作为是预测食管癌转移潜能和评估食管癌预后的客观指标     

Picotamide inhibition of excess in vitro thromboxane B2 release by colorectal mucosa in inflammatory bowel disease.

BACKGROUND: Inflammatory bowel disease is associated with increased mucosal release of eicosanoids. Among these, thromboxane A2 has been proposed as a possible inflammatory mediator; its suppression may be a useful therapeutic option. METHODS: Using a tissue incubation technique, we compared release of immunoreactive thromboxane B2 by colonic biopsies from patients with ulcerative colitis, Crohn's disease and controls, and assessed the inhibitory effect of picotamide, a thromboxane synthesis inhibitor-receptor antagonist, which has been widely used in Italy for management of ischaemic heart and cerebrovascular disease. RESULTS: Increased amounts of thromboxane B2 were released from biopsies from patients with active ulcerative colitis (median 238 pg/20 min/mg wet weight (interquartile range 147- 325), n = 12) and active Crohn's disease (252 (174-450), 6) compared with those from patients with quiescent ulcerative colitis (95 (61- 140), 12) or Crohn's disease (105 (57-201), 13), or controls (136 (64- 206), 8). Incubation with picotamide at concentrations between 100 microM and 1 mM reduced thromboxane B2 release (IC50 890 microM). CONCLUSION: Since increased thromboxane A2 production may have pathogenetic importance, thromboxane synthesis inhibitor-receptor antagonists such as picotamide merit therapeutic trial in the management of inflammatory bowel disease.     

Perforation of the large bowel during colonoscopy in Singapore

The management of seven patients with colonoscopy-related perforations is described. This study demonstrates the need for an early laparotomy. A high index of suspicion is required to reach an early diagnosis. Patients with no preexisting medical problems who underwent early surgery recovered with little morbidity. In elderly patients (greater than 75 years), colonoscopic perforation can be fatal. Endoscopy should be performed with special care in such patients.     

Follistatin and activin A production by the male reproductive tract

Follistatin is a binding protein for the activin and inhibin family of hormones, regulating their biological activity. In the male reproductive tract, the interaction of these factors is likely to be involved in the regulation of the proliferation of several cell types. We have investigated the presence of follistatin and activin A in seminal plasma using specific immunoassays and have localized follistatin and activin/inhibin subunits in the adult human testis, prostate and seminal vesicle to establish their likely sources. High concentrations of immunoreactive follistatin were present in seminal plasma in normal men (mean 97.9 ng/ml; 1.43 ng/ml in peripheral plasma) and were similar in men with oligo/azoospermia and following vasectomy. Follistatin immunoreactivity was localized to both Leydig and Sertoli cells of the testis, and to epithelial cells of the prostate gland and seminal vesicle, which are likely to be the predominant sources of the hormone in seminal plasma. Activin A was also present in seminal plasma in normal men but was undetectable following vasectomy, thus deriving from the testis. Consistent with this finding, the betaA-subunit was immunolocalized in Sertoli and Leydig cells but was not present in seminal vesicle or prostate gland. The functional significance of the high concentrations of follistatin secreted into seminal plasma by the prostate gland and/or seminal vesicle is uncertain, but they may regulate the biological activity of testis-derived activin A and inhibin B.      

甲型肝炎早期实验诊断的研究

以人胚肺二倍体细胞分离出的甲型肝炎病毒作抗原,以马抗人IgM经纯化后的抗体为捕捉抗体,以纯化甲型肝炎恢复血清为特异性抗体,过碘酸钠法标记酶,以OPD为底物制成抗-HAV IgM诊断试剂盒,建立了ELISA捕捉法检测抗-HAV IgM,结果:甲型肝炎暴发点84例均为阳性,流行性出血热及健康成人各30例均为阴性。322例急性黄疸型肝炎住院患者中192例阳性(占59.6%)。12例第一病日患者11例阳性(占91.6%),证明该方法对甲型肝炎早期诊断有重要价值。     

男性不育患者精浆尿酸的检测及临床意义初探

目的 :检测男性不育患者精浆尿酸的含量 ,并探讨其与不育的关系。　方法 :2 0 0 3年 2～ 8月就诊的男性不育患者 1 6 3例 ,分为 4组 :梗阻性无精子症组 ,1 5例 ;非梗阻性无精子症组 ,36例 ;少精子症组 ,4 3例 ;弱精子症组 ,6 9例。 2 0例正常生育男性为正常对照组。上述各组均作精液参数分析及精浆尿酸含量的测定。　结果 :正常对照组精浆尿酸含量为 (396 .9± 5 3.1 ) μmol/L ,显著高于梗阻性无精子症组 [(79.5± 1 8.1 ) μmol/L]、非梗阻性无精子症组[(2 4 5 .8± 76 .5 ) μmol/L]、少精子症组 [(2 6 2 .2± 79.2 ) μmol/L]和弱精子症组 [(2 5 1 .4± 75 .4 ) μmol/L](P均 <0 .0 1 )。其中 ,梗阻性无精子症组精浆尿酸含量又显著低于其他各不育症组 (P均 <0 .0 1 ) ,其余各不育症组间精浆尿酸含量差异无显著性 (P >0 .0 5 )。　结论 :精浆中尿酸作为生殖系统中的一种重要抗氧化物 ,可能在男性生殖中具有一定意义。     

上尿路结石致肾积水患者锂清除率的测定

采用原子吸收光谱法对４０例上尿路结石致肾积水患者进行了锂清除率测定。结果显示：梗阻所致肾积水患者的ＣＬｉ明显低于正常人（Ｐ〈０．００１），ＣＣｒ、ＣＮａ、Ｃｋ与正常对照组相比差异无显著意义（Ｐ〉０．０５）；并发现ＣＬｉ与肾积水程度呈负相关。认为可将ＣＬｉ作为发现梗阻性肾病早期肾功能损害的可靠指标，评价肾功能损害的程度和预后。     

W／H^2和W／H^3指数在儿童少年肥胖评价中的适用性

身高体重指数因其测量计算简便、误差小而在儿童少年肥胖评价中逐渐受到重视，但Ｗ／Ｈ２和Ｗ／Ｈ３在儿童少年肥胖评价中的适用性仍有争议，为了探讨两指数在儿童少年肥胖评价中的适用性，在西安市７～１８岁儿童少年中进行了本研究，结果发现在７～１３岁间Ｗ／Ｈ３指数比Ｗ／Ｈ２指数好，而在１４岁以后Ｗ／Ｈ２比Ｗ／Ｈ３更合适。