高效液相色谱-荧光检测法测定血浆总同型半胱氨酸浓度

目的 :建立测定血浆总同型半胱氨酸的高效液相色谱 (HPLC) 荧光检测分析方法。方法 :用TCEP将血浆中各种形式的同型半胱氨酸 (Hcy)还原成总同型半胱氨酸 (tHcy) ,以光胺作内标 ,巯基特异性荧光衍生剂SBD F对Hcy ,胱胺等含巯基化合物进行柱前衍生 ,然后行HPLC 荧光检测。结果 :本方法所检测的Hcy浓度在 2 .5～ 16 0 μmol·L- 1 范围具有良好的线性关系 (r =0 .9975 ) ,Hcy最低检测限 0 .6 2 5 μmol·L- 1 ,批内变异小于 5 .5 % ,批间变异小于 9.0 % ,平均回收率 98.87%。结论 :本法简便、灵敏、精确、稳定     

柴胡及甘草酸对小鼠肝细胞凋亡的影响

目的：研究柴胡（ＲＢ）及甘草酸（ＧＬ）对小鼠肝细胞凋亡的影响。方法：以肝／体重比，肝组织ＤＮＡ含量，组织学改变及原位凋亡细胞ＴＵＮＥＬ反应为指标，观察ＲＢ（１２．０ｇ／ｋｇ）及ＧＬ（５０ｍｇ／ｋｇ）ｉｐ，１次／８ｈ，对撇除苯巴比胺钠（ＰＢ）后引起的小鼠肝细胞凋亡的影响。结果：与对照组Ｃ相比，ＲＢ组小鼠肝／体重比及肝ＤＮＡ含量无明显回落，组织学检查未见明显凋亡改变，ＴＵＮＥＬ反应阴性，ＧＬ组小鼠肝／     

垂体腺瘤细胞VEGF表达与细胞因子分泌的关系

目的:探讨垂体腺瘤细胞株HP75 VEGF表达与细胞因子IL-1α和IL-6分泌的关系。方法:HP75细胞常规培养,经各种因素处理后,取培养上清液,采用ELISA方法分别检测VEGF、IL-1α和IL-6的分泌水平。结果:①HP75细胞时间依赖性分泌VEGF、IL-1α和IL-6;②较大剂量的IL-1α剂量依赖性的刺激VEGF表达;③所用各种剂量的IL-6对VEGF的分泌均无显著影响;④IL-1α和IL-6中和抗体对VEGF基础分泌无显著影响。结论:VEGF的表达与IL-1α和IL-6的分泌密切相关,提示细胞因子在垂体腺瘤的生长过程中发挥重要作用。     

肝移植手术中的配合

自从 1 96 3年Starzl成功实施世界上第一例活体肝移植后 ,肝移植手术已经成为现代肝脏外科学领域里的一个比较实用、也比较时髦的手术及研究项目。结合我院已完成的 2例肝移植手术 ,简要介绍肝移植手术术前、术中及术后的相关问题 ,并介绍肝移植手术的主要步骤 ,叙述手术中的相关配合问题     

Oral and dental manifestations in diabetic and nondiabetic uremic patients receiving hemodialysis.

OBJECTIVE: The aim of this study was to examine the dental condition and oral manifestations in diabetic and nondiabetic uremic patients undergoing hemodialysis. STUDY DESIGN: A total of 128 patients undergoing hemodialysis therapy were classified into the diabetic and nondiabetic groups and examined for uremic oral manifestations, dental caries, and the periodontal status. All the patients received predialytic salivary pH examination. In the diabetic group, the correlation between oral findings and glycemic controlled levels, which was collected based on Hb A1C values, were further studied. RESULTS: The diabetic group exhibited significantly higher prevalence of caries and more severe dry mouth, taste change, and mucosa pain than the nondiabetic group. The diabetic group tended to have lower predialytic salivary pH, and patients with poor glycemic control (ie, Hb A1C > 9%) showed higher incidence of dry mouth, mucosal pain, and tongue coating. However, the DMFT and CPI index were not associated with glycemic control in the diabetic group. CONCLUSIONS: This study reveals that diabetic uremic patients undergoing maintained hemodialysis exhibited a potentially higher risk for dental decay and xerostomia. Lower salivary pH and poor glycemic control may affect oral manifestations. Further research is needed to clarify the combined influence of diabetic nephropathy on oral health.     

Glycine transporter I inhibitor, N-methylglycine (sarcosine), added to antipsychotics for the treatment of schizophrenia.

BACKGROUND: Hypofunction of N-methyl-D-aspartate glutamate receptor had been implicated in the pathophysiology of schizophrenia. Treatment with D-serine or glycine, endogenous full agonists of the glycine site of N-methyl-D-aspartate receptor, or D-cycloserine, a partial agonist, improve the symptoms of schizophrenia. N-methylglycine (sarcosine) is an endogenous antagonist of glycine transporter-1, which potentiates glycine's action on N-methyl-D-aspartate glycine site and can have beneficial effects on schizophrenia. METHODS: Thirty-eight schizophrenic patients were enrolled in a 6-week double-blind, placebo-controlled trial of sarcosine (2 g/d), which was added to their stable antipsychotic regimens. Twenty of them received risperidone. Measures of clinical efficacy and side effects were determined every other week. RESULTS: Patient who received sarcosine treatment revealed significant improvements in their positive, negative, cognitive, and general psychiatric symptoms. Similar therapeutic effects were observed when only risperidone-treated patients were analyzed. Sarcosine was well-tolerated, and no significant side effect was noted. CONCLUSIONS: Sarcosine treatment can benefit schizophrenic patients treated by antipsychotics including risperidone. The significant improvement with the sarcosine further supports the hypothesis of N-methyl-D-aspartate receptor hypofunction in schizophrenia. Glycine transporter-1 is a novel target for the pharmacotherapy to enhance N-methyl-D-aspartate function.     

实验教学改革与学生综合素质培养的实践

在培养医学检验专业学生中 ,通过设置综合性、设计开放性实验 ,改革实验考核方法和内容 ,强化毕业实习 ,以深化实验室体制改革。以学生为中心 ,培养学生综合素质、创新精神和实践能力 ,全面推进教学质量提高     

局部麻醉和硬膜外麻醉下行无张力腹股沟疝修补术对老年病人的影响

[目的]比较局部麻醉和硬膜外麻醉下行无张力腹股沟疝修补术对老年病人的影响。[方法]将133例同期手术老年病人用抽签法随机分为局部神经阻滞麻醉组（观察组）和硬膜外浸润麻醉组（对照组），观察两组病人术中及术后血压、心率、平均手术时间、术后首次自排小便时间、住院时间、手术并发症等。[结果]观察组病人术后生活自理时间、术后首次自排小便时间、手术及麻醉时间、住院天数均少于对照组。[结论]老年病人局部麻醉下行无张力腹股沟疝修补术比硬膜外麻醉术痛苦少、恢复快、住院时间短。