无骨折脱位型颈脊髓损伤再手术原因分析

目的:探讨无骨折脱位型颈脊髓损伤患者再次手术治疗的原因,总结经验教训。方法:对1993年1月～2003年2月间13例经再次手术治疗的无骨折脱位型颈脊髓损伤患者的临床资料进行回顾性分析,根据其影像学表现,分析致伤的病理基础与形成因素的特点。结果:患者再手术的原因主要有:(1)前次手术入路选择不当(8例);(2)前次手术中脊髓减压不彻底(5例)。再手术后均获随访(平均43个月),神经功能得到了一定的改善(JOA评分改善率平均为40.6%)。结论:手术入路选择不当和减压不彻底是无骨折脱位型颈脊髓损伤再手术的主要原因,再次手术治疗应针对此类损伤致伤特点,选择合理的手术入路,并矫正前次手术不当之处,可获得一定的疗效。     

青山抗癌注射液抑制小鼠肿瘤生长的实验研究

目的：研究青山抗癌注射液对动物移植性肿瘤生长的影响．方法：以小鼠移植性肉瘤S180和肝癌H22为模型，以顺铂(DDP)为阳性对照，生理盐水(阳)为阴性对照，观察青山抗癌注射液对肿瘤生长的影响。结果：青山抗癌注射液不同剂量组对小鼠移植性肉瘤S180和肝癌H22的生长均显示了明显的抑制作用，与NS对照组相比，P＜0.01，且呈现出量效关系．结论：青山抗癌注射液具有抑制肿瘤生长的作用.     

Effect of (+/-)-, (+)- and (-)-gossypol on the lactate dehydrogenase-X activity of rat testis

The effect of (+/-)-, (+)- and (-)-gossypol on testicular lactate dehydrogenase-X (LDH-X) was studied in vitro and in vivo. It was found that racemic gossypol and the two optical enantiomers had similar inhibitory effects on rat testicular LDH-X in vitro. However, neither racemic gossypol nor the enantiomers exhibited an inhibitory effect on testicular LDH-X in vivo. It is concluded that inhibition of testicular LDH-X is not likely to be the mechanism of the antifertility action of gossypol. The inhibition of testicular LDH-X in vitro by all three preparations of gossypol is probably non-specific.     

植酸磷的测定──离子交换法

介绍用离子交换法测定植酸磷的含量。对消化终点、最适的提取时间、离子交换树脂的分离效果进行了试验。黄豆粉、窝窝头、豆腐干植酸测得值的变异系数分别为２．１６％、４．９２％、１．７８％，回收率依次为１０３．３８％、１０２．８１％、１０３．４１％。植酸标准品的植酸含量理论值为５７．６４％，本法测定值为５５．２３％，相对误差为２．１４％。本法的精密度及准确度均符合要求。     

H—TdR前体掺入技术在复方中药抗癌制剂研究中的应用

将一种快速、灵敏、可靠、简便的抗癌活性微量测定技术——~3H—TdR前体掺入技术用于复方中药抗癌制剂制备工艺筛选,短期内即拟定出较合理的工艺,经临床及14项生物学指标综合评定,该制剂疗效好,无明显的毒副作用。表明把一些快速、灵敏的医学检测技术引入药物制备工艺、质量标准及稳定性研究,可克服由于活性成分不清楚带来的一些困难,拓宽了研究途径,提高了研究水平。     

先天性肾上腺皮质增生伴睾丸间质细胞腺瘤性增生一例报告并文献复习

目的提高对先灭性肾上腺皮质增生伴睾丸间质细胞腺瘤性增生的认识。方法总结1例先天性肾上隙皮质增生伴睾丸间质细胞腺瘤性增生患者资料。患者，男，25岁。以双侧睾丸结节就诊。查体见双侧睾丸、附睾结节感，右睾丸增大，表面凹凸不平，质地硬。实验审检查睾酮（T）18．7nmol／L、17α-羟化酶（17α-（OH）P）〉20．0ng／ml、快速ACTH兴奋试验阳性、中剂量地塞米松抑制试验阳性。B超提示双睾丸弥漫性病变合并部分占位，示双侧肾上腺皮质增生。睾丸活枪结果为间质细胞增生结节，免疫组化α-inhibin（＋）。结果结合病史、实验室、影像学及病理学检查诊断为先大性肾上腺皮质增生伴睾丸间质细胞腺瘤性增生。口服氢化可的松替代治疗，40mg／d，2周后30mg／d维持治疗，8个月后超声检查双侧睾丸结节消退。随访2年，肿物无复发。结论双侧睾丸肿块应结合病史和内分泌检查除外先天性肾上腺皮质增生伴睾凡间质细胞腺瘤性增生，经口服皮质激素替代治疗，激素敏感型睾丸间质细胞腺瘤性增生可以消退。     

东部马脑炎病毒E2基因与GM-CSF共表达质粒的构建及其免疫原性初步研究

目的:利用粒细胞-巨噬细胞集落刺激因子(GM-CSF)作为基因佐剂,提高东部马脑炎病毒E2基因重组质粒的免疫效果.方法:分别扩增E2基因与GM-CSF基因,连接进入含有内部核糖体插入位点(IRES)的真核表达载体中,构建共表达质粒.Lipofectamine2000介导转染真核细胞BHK-21,反转录PCR检测E2和GM-CSF两个基因的转录,Western印迹法和间接免疫荧光法(IFA)检测细胞内E2基因表达产物的抗原性.通过肌肉注射免疫BALB/c小鼠,IFA法测定血清抗体效价,FACS测定免疫小鼠脾细胞中CD4 /CD8 淋巴细胞构成比,初步观察共表达质粒的免疫原性.结果:经酶切鉴定与序列测定证明重组共表达质粒中含有E2和GM-CSF两个基因且序列正确.转染细胞的反转录PCR可见E2和GM-CSF两个基因的转录.Western印迹结果可见转染细胞的裂解液在相对分子质量50 000位置有特异性条带.将转染细胞制成荧光抗原片,经IFA检测可见胞浆中出现特异荧光.免疫小鼠的最高血清抗体效价为1:160,但细胞免疫未观察到明显的提高.结论:构建的共表达质粒pE2-IRES-mGM-CSF具有良好的免疫原性,能有效刺激小鼠特异性体液免疫应答,提高了E2基因重组质粒诱导的血清抗体效价.     

肝内HBcAg与血清学指标的关系及慢性乙型肝炎发病机理的探讨

We detected the presence and distribution of HBcAg in the liver by immunohistochemistry (ABC method) and the presence of HBV-DNA in serum (spot hybridization) and anti-HBe in serum (ELISA) from 59 cases of hepatitis B hospitalized in our hospital, including 47 cases of CAH, 5 cases of CPH, and 7 cases of subacute fulminant hepatitis. 1. HBcAg in the liver was detected in 25 out of 47 cases (53%) of CAH, in 2 out of 5 cases of CPH and in 4 out of 7 cases of subacute fulminant hepatitis. The total percentage was 53% (31/59). 2. There was no positive correlation between HBV replication activity and liver disease activity (P greater than 0.05). Our results did not support the hypothesis that suggests a direct cytopathic effect of HBV. Oppositely, the fact was that the presence, the amount and the patterns of HBcAg in the liver, and the presence of HBV-DNA in serum were predominant in mild CAH compared with those in severe CAH, predominant in CAH without cirrhosis compared with those in CAH with cirrhosis. There was a tendency of inverse correlation between HBV replication activity and liver disease activity. The results above were in line with the concept that HBcAg expressed on the surface of infected hepatocytes may be relevant target for T lymphocyte cytotoxicity. The results have suggested that an immune response to HBV is present, leading to the destruction of most infected cells. 3. There was a positive correlation between HBV-DNA in serum and HBcAg in the liver (P less than 0.005), indicating that HBV-DNA in serum can represent HBV replication.(ABSTRACT TRUNCATED AT 250 WORDS)