Association analysis of CA repeat polymorphism of the endothelial nitric oxide synthase gene with essential hypertension in Japanese

The nitric oxide synthase (NOS) gene is thought to be associated with essential hypertension (EH), because NO is implicated in endothelium-mediated vasodilation. We investigated the possible association between the alleles of simple tandem repeat DNA polymorphism of the endothelial constitutive NOS (cNOS) gene and EH in Japanese subjects. In all, 100 patients with EH and 123 subjects with normal blood pressure were studied. Polymerase chain reaction was used to amplify the CA repeat site in the endothelial cNOS gene and alleles based on the CA repeat number were determined. The allele frequencies in the hypertensive group and normotensive group were then compared. Twenty-three alleles were identified in this study of Japanese subjects. The overall distributions of allele frequencies in the two groups were not significantly different. However, comparing the allele frequencies in the EH group without left ventricular hypertrophy (LVH) and the normotensive group, the overall distributions were significantly different (p = 0.019). The 33-repeat allele was found more frequently in the EH group without LVH than in the normotensive group (p = 0.000047, Odds ratio = 3.71). In conclusion, the 33-repeat allele of the endothelial cNOS gene is associated with EH without LVH, and may be a genetic marker of EH in Japanese subjects.     

Use of the 90Sr applicator for intraoperative radiation therapy in a mouse tumor model

Intraoperative radiation therapy (IORT) research is limited by the lack of small-animal models. We have implanted B16 melanoma into mouse kidneys, which we subsequently operated upon and irradiated with beta rays from a ⁹⁰Sr ophthalmic applicator. The IORT has effectively prolonged survival and produced some cures. The strategy should be applicable to other murine tumors and to other internal implantation sites.     

P16MTS1、P27KIP1基因在胆管癌组织中的表达研究

目的：探讨P16^MIS1,P27^KIP1基因与胆管癌临床病理的关系。方法：采用免疫组化方法，检测48例胆管癌和8例伴慢性炎症的胆管壁组织中P16^MIS1,P27^KIP1蛋白表达情况。结果：（1）胆管癌中P16^MIS1,P27^KIP1阳性表达率分别为47．9％和35．4％，而伴炎症的胆管组织阳性表达率为100％和87．5％；（2）P16^MIS1,P27KIP1蛋白表达与胆管癌的分化程度，有无淋巴结或远处转移以及临床分期呈显著相关性。结论：P16^MIS1,P27^KIP1多基因表达异常可能与胆管癌的发生发展有关，是衡量胆管癌预后的有用指标。     

长波紫外线照射对小鼠黑素瘤细胞的影响

[目的]研究不同剂量UVA照射对体外培养B_16小鼠黑素瘤细胞的形态、增殖率、黑素含量和酪氨酸酶活性的影响。[方法]选用B_16小鼠黑素瘤细胞 ,经不同剂量的UVA照射后 ,采用MTT法测定细胞的增殖 ,参照HideyaAndo等的方法测定酪氨酸酶活性和黑素含量。[结果]UVA照射后 ,黑素含量增加 (P<0.01) ,酪氨酸酶活性提高 (P<0.05) ,细胞增殖率上升 ,照射剂量在0.6、1.2、1.8J/cm2时 ,细胞增殖率的变化有显著性 (t=2.495、2.645、3.081,均为P<0.05)。[结论]随着照射剂量的增加 ,黑素含量增加 ,酪氨酸酶活性提高 ,细胞的增殖率增加 ,但UVA的促黑素瘤细胞增殖作用是有限的     

卵巢甲状腺肿并发胸腹水及血清CA125升高1例报告

本文报告1例卵巢甲状腺肿并发胸腹水及血清CA125升高.     

人乳头瘤病毒多肽与人免疫球蛋白G融合表达

目的 将人乳头瘤病毒16型(Human papillomavirus type 16，HPV-16)的晚期表达蛋白E7上的抗原24肽(从第38位氨基酸到第61位氨基6病毒感染防治酸)与人免疫球蛋白G的重链恒定区融合表达，并以此融合蛋白作为抗原，可能为HPV-1提供免疫治疗方法。方法 利用PCR方法分别扩增HPV-16 E7(38-61)24肽的DNA片段和人免疫球蛋白G的重链恒定区DNA片段，并构建到pEV21a表达载体上，转化入E．coli中表达，利用SDS-聚丙烯酰胺凝胶电泳(SDS-PAGE)和蛋白质免疫印迹(Western-blotting)的方法对表达结果进行鉴定。结果 构建的表达载体HPV16E7e／hIgGHCCR-pET21a经酶切鉴定和测序显示序列正确；通过SDS-PAGE和Western-blotting的鉴定，重组融合蛋白Mr约40000，表达量可占菌体蛋白的20％左右。结论 成功构建HPV16-E7的抗原多肽片段和人免疫球蛋白G的重链恒定区的融合蛋白，并可在E．coli中高效表达。     

CA125水平与肝硬化腹水定量及预后判断的关系探讨

目的探讨肝硬化患者CA125水平与腹水定量及预后的关系.方法肝硬化患者115例,84例伴有腹水,31例不伴有腹水;Child-pugh A级25例,B级53例,C级37例,健康对照组31例.用放射免疫法检测血清CA125水平,42例患者同时检测腹水CA125水平.对47例患者进行随访,其中25例有腹水,22例无腹水,结合CA125水平,观察腹水再发生的情况.结果肝硬化患者血清CA125显著高于正常对照组,并随肝硬化程度加重而进行性增加.伴有腹水患者血清CA125水平明显提高,与同一Child分级的无腹水患者相比有统计学意义.而且随着腹水量的增多,其血清CA125水平也呈逐渐升高趋势.CA125水平高且有腹水者腹水的再发生多,而CA125水平正常者腹水的再发生少.结论血清CA125水平对衡量肝硬化患者的预后和预测腹水再发生率有一定的参考价值.     

结核性胸水患者治疗前后检测血清CA125的临床价值

CA12 5在卵巢肿瘤诊断中已被广泛应用 ,并被证实对消化系统恶性肿瘤的诊断也有较好的参考价值 ;在胚胎组织发育中也可找到 ,属混合性肿瘤标志物[1 ] 。国外已有文献报道结核性腹膜炎患者血清CA12 5可明显升高[2 ] 。我们对结核性胸水患者血清CA12 5治疗前后水平的变化进行了临床分析。对象与方法1.对象 :3 6例均为我院收住院的结核性胸水患者 ,男性 2 1例 ,女性 15例 ,年龄 2 6～ 82岁 ,平均年龄 5 5岁± 13岁。依据陈灏珠主编的《实用内科学》第 10版的诊断标准确诊 ,并结合临床表现、X线胸片或CT、PPD试验 ,胸水ADA和抗结核治疗有效…     

CA125测定对某些妇科肿瘤的诊断意义

本文对４０名正常妇女和２０２名妇科肿瘤、宫内膜异位症的患者进行了血清ＣＡ１２５的测定。结果表明９８％正常妇女血清ＣＡ１２５水平＜５０ｕ／ｍｌ，行经期水平高于滤泡期、黄体期和绝经期水平。五组妇科疾病患者血清ＣＡ１２５水平也进行了测定，并观察了２１名卵巢癌患者ＣＡ１２５水平的变化情况。卵巢癌患者ＣＡ１２５水平最高，它与其它疾病组及正常对照组有明显的差异。血清ＣＡ１２５的测定在妇科临床上是有价值的。     

D16S80和D16S125两位点RFLP在多囊肾症状前诊断中的应用

给出了用“混合型”雅可比级数的泰勒平均逼近黎普希兹函数类的点态估计。