精神分裂症服用氯氮平能降低其甲状腺素水平的对照分析

目的探索氯氮平治疗是否影响T3、T4和TSH水平.方法对17例精神分裂症患者,给予氯氮平治疗第4天和第4周末分别测定T3、T4和TSH水平.结果治疗第4周末的T3(3.309±0.689)、T4(9.449±1.941)水平比第4天的T3(3.915±0.850)、T4(11.178±2.180)水平明显降低(P均＜0.05).结论氯氮平治疗能降低甲状腺素水平.     

A Latex Finger Strip and Nylon Zip-Tie Combo as a Tunable Digital Tourniquet

BACKGROUND: Surgery on digit and nail requires a clear bloodless field that is often achieved by a tourniquet. OBJECTIVE: The objective is to present a simple, effective, and safe tourniquet for digital surgery. MATERIALS AND METHODS: A latex glove and a nylon zip-tie were used. A long strip is cut from the little finger tube of a latex glove. This is used for wrapping around the digit for exsanguination. The pressure is then maintained with a household nylon zip-tie. The finger strip is then cut to expose the operative field ready for surgery. The tourniquet pressure can be adjusted by tightening or loosening of the nylon zip-tie. RESULTS: Exsanguination and a bloodless field can be effectively achieved. The long tail of the nylon zip-tie reminds the operator to remove it at end of the surgery. CONCLUSION: A latex strip and nylon zip-tie combo serves as a simple, effective, and safe tourniquet for digital surgery.     

Reciprocity between tissue calmodulin and cAMP levels: modulation by excess zinc

Signal transduction of many intracellular events is initiated by a minute influx of calcium ions into the cells, resulting in the formation of calcium-calmodulin complex and cAMP. Because zinc appears to have an inhibitory effect on a number of tissue reactions, it is postulated that this occurs through modulation of intracellular calcium influx. To test the hypothesis that the inhibitory effects of zinc are mediated through the calcium calmodulin-cAMP pathway, zinc was administered by various routes to five groups of nude mice (control, intragastric, intraperitoneal. intradermal and oral groups), and calmodulin and cAMP concentrations were measured in the cytosol of epidermal cells. Calmodulin levels decreased significantly in the groups given intraperitoneal zinc (P>0.025) and intradermal zinc (P>0.001) injections. Significant elevations of cAMP levels were noted with intradermal zinc (P>0.025). Overall, the relationship between calmodulin and cAMP appeared to be inversely logarithmic, with the lowest calmodulin levels associated with the highest cAMP concentrations. In addition, there was a significant trend towards a smaller calmodulin/cAMP ratio in all zinc-treated groups, except the mice fed dietary zinc. These results appear to correlate with tissue zinc levels obtained with these various forms of zinc administration. Our results therefore indicate that there is a reciprocity between epidermal calmodulin and cAMP levels, which may be modulated by external factors such as zinc.     

头孢替唑钠与头孢唑啉钠对照治疗急性细菌性感染130例

目的：观察头孢替唑钠治疗急性细菌性感染的疗效及安全性。方法：130例急性呼吸道及泌尿道感染患者，随机分成试验组和对照组。分别接受头孢替唑钠和头孢唑啉钠，均用2g溶于5％葡萄糖溶液或生理氯化钠溶液中静滴，bid，疗程7-14d。结果：试验组痊愈率66．7％，明显优于对照组（P＜0．01），总有效率试验组97．0，优照组无明显差异（P＞0．05）。头孢替唑钠对106株致病菌的敏感率96％（102／106株高敏），对金葡球菌MIC值为0.06-0.5mg.L^-1，低于头孢唑啉、头孢氨苄，头孢呋辛及头孢他啶的MIC值。结论：头孢替唑钠是治疗急性呼吸道及泌尿道感染安全有效的抗生素。     

肝细胞癌NF κ-B表达与CT表现的相关性

目的 探讨核因子（NF κ-B）在肝细胞癌组织中的表达与CT影像特点间的关系。方法 收集华西医院有完整临床资料和全肝CT扫描图像并经手术完整切除的肝癌组织标本患者80例,采用免疫组织化学方法染色定量分析癌组织中NF κ-B表达情况和在不同的临床参数中表达的差异;再分别以肿瘤坏死、血供、瘤体直径和瘤周子灶的有无分四组,探讨NF κ-B表达量在不同CT影像特征中有无差异。结果 CT检测80例患者中肝癌细胞核内NF κ-B表达阳性有74例（92.5%）。肝细胞癌NF κ-B表达与临床参数,包括性别、肝炎病史无相关性,瘤体大小与NF κ-B表达无统计学差异。CT检测肿瘤血供、坏死及瘤周子灶的有无与NF κB表达相关（P＜0.05）,富血供肝细胞癌NF κ-B表达较乏血供者明显增高,而瘤体有坏死者较未发生坏死者低,瘤周出现子灶的病例NF κ-B表达也增高,且差异有统计学意义（P＜0.05）。结论 肝癌血供、坏死及瘤周子灶CT影像特点与NF κ-B水平密切相关。瘤体血供丰富、瘤内无坏死、瘤周伴有子灶的肝癌组织NF κ-B表达水平明显增高,NF κ-B表达水平量可能与肿瘤的生物学特性,疾病的转归和预后相关,CT检测可为肝癌的治疗及预防评估提供重要依据。     

皱瘤海鞘乙醇提取物对HSV-2基因复制的影响

目的：研究皱瘤海鞘乙醇提取物对HSV-2 DNA复制的影响;方法：以Vero细胞为模型,应用CPE法,MTT法、real-time PCR与反向PCR检测皱瘤海鞘乙醇提取物对HSV-2DNA合成的抑制作用。结果：皱瘤海鞘乙醇提取物显著抑制HSV-2所致的CPE;皱瘤海鞘乙醇提取物在HSV-2生物合成早期(-2,0,2小时)时干预,对HSV-2的生物合成抑制效果较好,病毒抑制率达65%以上;皱瘤海鞘乙醇提取物能够显著抑制HSV-2 DNA拷贝数,与病毒对照组比较具有显著差异(P＜0.01),并能下调HSV-2DNA聚合酶UL30基因的表达。结论：皱瘤海鞘对HSV-2DNA复制具有抑制作用,其作用靶点之一是HSV-2DNA聚合酶UL30基因。     

鼻咽癌组织中Survivin蛋白和HIF-1α表达水平及临床意义

目的 探讨鼻咽癌组织中Survivin蛋白和缺氧诱导因子-1α(HIF-1 α)表达水平及临床意义.方法 选取2010年12月-2015年12月经病理切片确诊为鼻咽癌的患者72例;同时选取24例慢性鼻咽炎组织标本进行对照.应用免疫组织化学检测Survivin蛋白和HIF-1α的表达情况,并分析其表达水平的临床意义.结果 鼻咽癌组织中Survivin蛋白和HIF-1α阳性表达率均高于慢性鼻咽炎组织(P＜ 0.001).Ⅲ+Ⅳ期鼻咽癌组织Survivin蛋白和HIF-1α的阳性表达率、中等及以上阳性表达率均高于Ⅰ+Ⅱ期鼻咽癌组织(P ＜0.001);有淋巴结转移的患者Survivin蛋白和HIF-1α的阳性表达率均高于无淋巴结转移的患者(P＜0.05和P＜0.001).结论 Survivin和HIF-1α表达在鼻咽癌组织中具有较高的表达,两者在鼻咽癌的分期,进展过程中起到了重要的作用.     

炔雌醇环丙孕酮片治疗多囊卵巢综合征临床分析

目的：探讨炔雌醇环丙孕酮片治疗多囊卵巢综合征（PCOS）的临床效果。方法：选择本院收治的66例多囊卵巢综合征患者,全部PCOS患者都从撤药流血或者月经流血第5天起,每天晚上服用1片炔雌醇环丙孕酮片,连续服用21d。然后在撤药撤血第5天开始重复使用炔雌醇环丙孕酮片,共使用6个周期。观察治疗前后体征参数、性激素水平和血糖代谢水平。结果：多囊卵巢综合征患者在治疗后,多毛体征和痤疮严重程度大为减轻,而且卵巢的体积显著减小,黄体生成素、黄体生成素/空腹胰岛素、总睾酮均显著下降（P〈0.05）,血糖代谢不受影响（P〉0.05）。治疗前正常排卵者3例,治疗后正常排卵者45例。结论：炔雌醇环丙孕酮片对多囊卵巢综合征患者有显著的抗激素作用,对血糖代谢无不良影响,促进排卵,能显著降低雄激素和相关体征。     

PELA-BSA微球体外释药的灰色数学模型与结果预测

目的：运用灰色数学理论预测长效缓释蛋白微球的体外释药过程。方法：以复乳法制备PELA蛋白微球作为实验对象，根据灰色数学模型，借助计算机编程，预测PELA蛋白微球的体外释药过程。结果：预测值与实测值平均绝对误差E在2.3-4.6之间，平均相对误差在9.2％-14％范围内。结论：灰色数学理论可用于预测长效缓释释药体系体外释药过程。     

双旋转皮瓣应用于乳腺癌保留乳房治疗的临床研究

目的：研究拓宽乳腺癌保留乳房治疗的指征及改善术后美容效果的手术方法。方法：对65例临床T1-3N0-2M。乳腺癌患者行肿瘤切除＋全腋淋巴结清除术,达到切缘阴性,术中采用双旋转乳腺皮瓣进行乳腺整形,辅以放、化和（或）内分泌治疗。结果：65例清除腋窝淋巴结8～26枚／例,平均16枚／例,术后中位随访时间为68个月,均无局部复发,3、5、8年生存率分别为100％、91．67％和86．67％。保留乳房的美容效果满意率为95．38％。结论：采用双旋转乳腺皮瓣行乳腺癌保留乳房手术,可以拓宽乳腺癌保留乳房治疗的指征,提高术后美容效果的满意度,不降低肿瘤局部控制率及生存率。