二硫化碳对大鼠胚胎发育及血清锌和铜含量影响的研究

本文观察了CS_2对大鼠胚胎发育及血清锌、铜含量的影响。发现胚胎着床前死亡率升高,胎鼠皮下出血、心包淤血及骨骼骨化不金的发生率增高。但无明显的致畸效应。14.1及103.9ng/m~3的CS_2对妊娠大鼠的血清锌、铜含量无明显影响。说明CS_2对大鼠的胚胎毒性与其对妊娠大鼠血清锌、铜含量的影响之间没有关联。     

原钒酸钠对Ⅱ型糖尿病的降糖作用研究

目的　观察原钒酸钠对Ⅱ型糖尿病大鼠的降糖作用。方法　用高脂饲料灌胃正常大鼠 ,引起肥胖 ,测定血中游离脂肪酸浓度。同时应用正糖钳技术检测胰岛素抗性 ,对产生胰岛素抵抗的大鼠腹腔注射小剂量链脲菌素 (5 5mg·kg-1) ,然后筛选空腹血糖值大于 11 1mmol·L-1大鼠为糖尿病模型组。连续灌胃原钒酸钠 7d后 ,测定空腹血糖值。结果　①大鼠喂食高脂饲料后 ,正糖钳实验中维持血糖稳态所需胰岛素量增多 ,为 (0 5 4± 0 0 2 )U·min-1,高于正常组 (P <0 0 1) ;同时血中游离脂肪酸浓度增加 ,从正常 (0 4 6 9±0 0 4 7)mmol·L-1至 (1 5 32± 0 2 91)mmol·L-1(P <0 0 1) ;②原钒酸钠对正常大鼠的血糖值无影响 ,而对Ⅱ型糖尿病大鼠的空腹血糖值及糖耐量曲线下面积有降低作用 (P <0 0 5 )。结论　实验结果证明了原钒酸钠可以明显降低Ⅱ型糖尿病大鼠的空腹血糖值 ,并且对糖耐量具有保护作用     

恶性肿瘤局部淋巴结树突状细胞免疫组化研究

本文采用S-100蛋白为免疫学标记，对34例恶性肿瘤局部淋巴结内树突状细胞进行免疫组化定量研究。结果按S-100蛋白阳性细胞数目多少分为增多（7例）、减少（20例）及正常（7例）3组，统计学分析增多组均值（164.4个/mm^2)明显高于对照组（58.3个/mm^2)；减少组均值（16.5个/mm^2)组显低于对照组；而正常组均值（69.8个/mm^2)与对照组无显著差异。     

Radioimmunotherapy combined with chemotherapy and immunotherapy for nude mice bearing human hepatocellular carcinoma

A comparative study of multiple modalities, radioimmunotherapy combined with cisplatin and MBV was made. The tumor size and macrophage activity (acid phosphatase) were measured after treatment. The results showed that the tumor inhibition rates were 48, 55, 74, 76, 79% in radioimmunotherapy, cisplatin, radioimmunotherapy + MBV, radioimmunotherapy + cisplatin and radioimmunotherapy + MBV + cisplatin groups, respectively. Radioimmunotherapy was effective in controlling tumor growth, especially in sequential treatment by two injections. Both cisplatin and MBV could increase therapeutic effect of radioimmunotherapy. Therefore, combination of the three modalities is the best choice for tumor growth control. The effectiveness of MBV may be related to the increase of macrophage activity. Preliminary clinical results were satisfactory. Decline in serum AFP level and shrinkage of tumor were observed in 80% (12/15) and 65% (13/20) of the patients. It is suggested that combination of multiple treatment modalities may provide an important approach to treat moderately advanced liver cancer.     

2687例血清甲状腺球蛋白抗体和微粒体抗体测定及其临床意义

报告2687例血清甲状腺球蛋白抗体和甲状腺微粒体抗体的放射免疫测定结果,九类病人的抗体阳性率如下:甲状腺正常病人12.6(30/239)、孤立甲状腺结节16.9%(62/383)、弥漫性甲状腺肿35.4%(226/638)、多结节甲状腺肿54.7%(104/190)、甲亢未治疗77.7%(404/520)、甲亢治疗中67.2%(218/345)甲亢临床已治愈60.3(102/169),原发性甲减80.8%(118/146)、亚急性甲状腺炎35.1%(20/57)。各种甲状腺疾病的总阳性率为51.2%(1254/2448)。对甲状腺自抗体阳性在甲状腺疾病的诊断、治疗、和预后判断上的意义进行了讨论。     

经蝶窦入路手术切除垂体腺瘤

目的:探讨采用经蝶窦入路手术切除垂体腺瘤的临床疗效.方法:1990年3月至2002年12月采用经蝶窦入路手术切除垂体腺瘤493例(微腺瘤93例,大腺瘤301例,巨大腺瘤99例),其中经唇下-鼻中隔入路345例,经鼻小柱-鼻中隔入路99例,经单鼻孔入路49例.结果:肿瘤全切除269例(54.6％),次全切除117例(23.7％),部分切除107例(21.7％);术后视力及视野改善者占86.7％(268/309),内分泌指标改善者占73.8％(259/351),出现并发症43例(8.7％).结论:经蝶窦手术切除垂体腺瘤是安全有效的;大型垂体腺瘤可以采用分次经蝶窦手术治疗.     

深圳市龙岗区坪地外来工亚健康状态的研究

目的 :探讨深圳市龙岗区坪地外来工亚健康状况及其影响因素 ,为预防亚健康提供科学依据。方法 :采用统一表格对 12 68深圳市龙岗区坪地外来工进行调查。结果 :外来工的平均年龄为 ( 2 4.96± 6.10 )a ,其亚健康状态总体发生率为 65 .3 0 %,男性亚健康状态发生率为 63 .2 1%,女性为 67.91%,男性和女性之间差异无统计学意义。亚健康状态主要影响因素为 :结婚与否、睡眠时间、工作时间、加班时间以及工作是否有压力和居住环境差等因素 ,而与吸烟、饮酒、文化程度等因素无相关。结论 :深圳龙岗区坪地外来工中普遍存在亚健康状态 ,其发生较高且与工作环境、工作时间、加班时间有密切关系 ,故应引起政府部门及社会各界高度重视 ,加强对外来工的健康保护     

碱性成纤维细胞生长因子治疗恶性血液病化疗后口腔黏膜炎的效果观察

口腔黏膜炎（OM）是恶性血液病病人化疗后常见的并发症，具有潜在危险性，且缺乏有效防治手段，不仅给病人带来疼痛，影响病人的生存质量，也是致死性感染的重要原因之一。本组观察2004年6月-2005年6月在我科住院的74例次恶性血液病病人化疗所致的溃疡性OM的临床表现，比较了碱性成纤维细胞生长因子（bFGF）治疗和常规漱口液、软膏治疗对OM的疗效。     

Comparative effects of ethanol on motor activity and operant behavior.

Ethanol effects on two types of motor activity and on lever responding for food delivered on a fixed-ratio 20 (FR 20) reinforcement schedule were compared using C57BL/6 (C57) mice. Low doses of ethanol (1-2 g/kg) transiently elevated horizontal activity and high doses (2.5 and 3.0 g/kg) reduced this behavior throughout testing with a slight recovery toward the end of a 16-min test period. In contrast, similar ethanol doses produced a monotonic reduction in both vertical activity and lever responding for food under the FR 20 schedule. The ethanol-induced reduction in FR 20 lever responding was less prolonged than the reduction in vertical activity but was more prolonged than the reduction in horizontal activity. Because vertical activity and lever responding for food delivered on the FR 20 schedule were never elevated, were reduced at ethanol doses that either stimulated or depressed horizontal activity, and were unaffected by low ethanol doses that did not affect horizontal activity, it is unlikely that either are sensitive to the stimulatory effects of ethanol. Accountable mechanisms for the different effects of ethanol on the three behaviors are unknown; however, the present study eliminates ethanol dose, postinjection time, testing time, and food deprivation condition as possible reasons for the differences.     

组织工程支架在犬急性脊髓损伤修复中应用的初步研究

目的探讨携带神经干细胞的聚碳酸亚丙酯[poly（propylene carbonate），PPC]可降解支架移植在犬脊髓急性损伤后修复中的作用。方法制作犬T13脊髓左侧半切损伤模型。将实验动物随机分为3组：细胞支架组在损伤后1周时将填充神经干细胞的PPC可降解支架植入损伤区．支架组只植入支架，对照组不作移植。8周后观察支架的组织反应、降解情况及神经干细胞的迁移分化和脊髓轴突再生情况。结果支架部分降解，管腔内未见瘢痕侵入。神经干细胞向支架邻近部位广泛迁移、扩散，并分化为3种神经细胞表型。神经丝蛋白（NF）及髓鞘碱性磷酯蛋白（MBP）免疫组化显示细胞支架组脊髓损伤区邻近部位的继发损害较其他组轻。结论携带神经干细胞的PPC可降解支架在犬脊髓组织中无明显组织反应．能够抵御瘢痕侵入：其携带的神经干细胞能够整合入邻近脊髓组织并起到一定保护作用。