双眼视差视觉诱发电位与立体视觉的关系初探

作者采用双眼视差视觉诱发电位（VEP）记录了18名正常人和9名斜视患者（立体盲），结果正常人视觉刺激VEP P₁₀₀振幅明显高于非视差刺激者；斜视患者视差刺激与非视差刺激VEP P₁₀₀振幅差异无显著性；正常人视差刺激VEP P₁₀₀振幅增加的幅度值[（DSA-NDA）/NDA]明显高于斜视患者。 （中华眼底病杂志，1992，8：10-13）     

病毒性肝炎病人血浆VitE水平及其临床意义

观测了急性肝炎和重症肝炎病人血浆ＶｉｔＥ及Ｌｐｏ水平及其动态变化。急性肝炎和重症肝炎病人血浆ＶｉｔＥ低于对照组，Ｌｐｏ高于对照组，均以重症肝炎更明显，且死亡病例血浆ＶｉｔＥ低于存活者。部份病人口服ＶｉｔＥ不能提高其血浆水平，并随病情加重而逐渐降低。讨论了病毒性肝炎病人血浆ＶｉｔＥ降低与Ｌｐｏ升高的关系及其临床意义，认为动态观测血浆ＶｉｔＥ可作为判断重症肝炎病情进展及预后的参考。     

城市污灌废水的致突变性检测及色谱/质谱分析

应用Ames致突变试验,对比研究了武汉市易家墩、黄孝河污灌区污灌废水与土壤的致突变性。同时应用色谱/质谱(GC/MS)分析技术。测定了主要污水中有机污染物的化学组成。结果表明:罗家渠废水的致突变活性最强;受各条污水灌溉的土壤的致突变活性顺序与相应废水的强弱顺序一致;罗家渠废水中致突变致癌物主要是萘、联苯等。     

Hwa-byung. A community study of Korean Americans.

One hundred nine Korean American community subjects were interviewed regarding their experiences with hwa-byung (HB), a Korean folk illness label commonly used by Koreans with a myriad of physiological and psychological complaints. During these interviews, standard instruments were also used to assess their depressive and somatic symptoms. The results indicated that a relatively high proportion (12%) of the subjects labeled themselves as having suffered from HB. While no apparent sociodemographic differences were found between HB and non-HB subjects, significantly more HB subjects fulfilled the diagnosis of DSM-III major depression and also had previous diagnoses of depression. The HB subjects also had significantly higher scores for the total, depressive, and somatic subscales and 16 of the 20 individual items of the Center for Epidemiologic Studies-Depression Scale. These data confirm previous observations of substantial overlap between HB and DSM-III major depression among Koreans and Korean Americans, and suggest that HB may be a culturally patterned way of expression for Koreans experiencing major depression and related conditions. The clinical and theoretical implications of these findings are also discussed.     

Morphology of griseofulvin-resistant isolates of Mongolian variant of Trichophyton schoenleini.

Clinical, experimental and electronmicroscopic observations, and computer-enhanced images were made on 5 patients with tinea favosa resistant to griseofulvin. The pathologic fungus was identified as the Mongolian variant of Trichophyton schoenleini. The results of physical examinations, routine tests of blood, urine and stool, liver and immunologic function examinations were normal in all of the 5 patients. Under scanning electron microscopy, the surface of the spore showed pineapple-like form, the cluster of the acrogenous spores presented flower shape, and the antler-like hyphae appeared twisted in the culture. They were observed by transmission electron microscope and the images were processed by microcomputer. It was found that the cell walls of the fungi consisted of 8 layers, among which the inner layer was loose and contained cytoplasm. It was also found that all structures within the cytoplasm possessed a 1-3 layer intact envelope and there was chromatin in the nucleus. These may be contributing factors in the development of resistance to griseofulvin. This multiple-layered thick cell wall may act as a barrier responsible for the impermeability of the cell of fungi to griseofulvin.

     

Monitoring urinary amylase and pH in pancreas transplantation with urinary drainage in rats

Whole pancreas isografts or allografts (ACI donors, RT1a) with bladder drainage of exocrine secretions were performed in Lewis rats (RR1(1] with streptozotocin-induced diabetes. Urinary amylase, pH, and volume and serum glucose were measured daily. They were analyzed alone, or in combination, to determine patterns in deviations from normal values, from isograft control values, or from a posttransplant baseline in relation to rejection (defined as reversion of plasma glucose of greater than 200 mg/dl) in nonimmunosuppressed recipients. Also studied were the sensitivity and specificity by which such deviations predicted rejection. Functioning grafts were associated with increased urinary amylase and pH compared with normal or diabetic controls; urinary volume was less than that of diabetic rats, but greater than that of normal rats. In nonimmunosuppressed allograft recipients (n = 9), rejection occurred at a mean (+/- SD) of 7.78 +/- 0.44 days. Serum glucose rose to above normal (greater than 134 mg/dl) 1 day before rejection in 3 animals (sensitivity 33%, false negative rate 66%; false positive rate in 9 isograft recipients, 44%). Urinary volume dropped below 3 ml at a mean of 3.17 +/- 0.98 days (range 2-5 days) before rejection in 6 animals (sensitivity 66%, false negative rate 33%; false positive rate 0%). Urinary pH fell below 7.25 at a mean of 3.13 +/- 1.81 days (range 1-5 days) before rejection in 8 rats (sensitivity of 89%, false negative rate 11%; false positive rate 29%). Urinary amylase dropped from a posttransplant peak at a mean of 3.56 +/- 1.42 days (range 1-6 days) before rejection in 9 animals (sensitivity 100%, false negative rate 0%; false positive rate 43%), and dropped below 1500 units per 24 hr at a mean of 2.00 +/- 1.32 days (range 1-5 days) before rejection in 8 animals (sensitivity 89%, false negative rate 11%; false positive rate 0%). A drop in urinary amylase combined with a drop in urinary volume or pH occurred at a mean of 3.22 +/- 1.48 days (range 1-5 days) before rejection in 9 rats (sensitivity 100%, false negative rate 0%; false positive rate 0%). In a separate group of 10 allograft recipients, immunosuppression with prednisone and cyclosporine was begun concomitant with, or within 2 days of, the drop in urinary amylase from the peak value; rejection did not occur in 3 animals and was delayed to a mean of 12.0 +/- 5.0 days posttransplant in 7 animals (P less than .05 compared with the nonimmunosuppressed group).(ABSTRACT TRUNCATED AT 400 WORDS)     

梅罗综合征和螺旋体感染的关系

用Ｗａｒｔｈｉｎ－Ｓｔａｒｒｙ螺旋体特殊染色法及透射电镜观察，分别在１９例肉芽肿性唇炎和５例梅罗综合征（ＭＲＳ）病人的病变组织内发现有螺旋体存在，并对其在光，电镜下的形态和在病变组织内的分布部位进行了描述。经用大刘量青霉素治疗１１例病人，１０例有效。本结果为ＭＲＳ的发可能和螺旋体感染有关的推测提供了依据。     

缺血－再灌注兔心肌肌浆网自由基的测定

应用电子自旋共振波谱仪（ＥＳＲ）直接检测了缺血－再灌注兔心肌肌浆网自由基的变化，以探讨肌质网系统与氧自由基的关系。实验中将２０只兔随机分为再灌注对照组、超氧化物歧化酶（ＳＯＤ）组、ＡＴＰ－氯化镁组和人参皂甙Ｒｅ组。实验结果，ｇ值２．００４６处为半醌自由基波谱，其相对浓度各组依次为７８．９４±２．１２６，１４．４６±２．８６，２０．６５±７．６５，１４．６６±３．６７（ｘ±ＳＤ），对照组与用药组均有显著性差异（Ｐ＜０．０５），表明缺血－再灌注兔心肌肌浆网产生大量的自由基，用ＥＳＲ可以直接检测到半醌自由基，外源性高能磷酸盐制剂ＡＴＰ－氯化镁及人参皂甙Ｒｅ与超氧化物歧化酶一样，发挥清除兔心肌肌浆网自由基的作用。     

术中使用缓释型5-FU对于进展期结肠癌的疗效研究

随着生活水平的提高,恶性肿瘤的发病率也逐年增高,最新资料统计表明,目前全球结肠直肠癌病人每年有100万之多[1]。在我国其发病率近年来也呈明显上升趋势,到目前为止,结肠直肠癌病人的术后5年生存率也一直徘徊在50%左右[2]。因而如何有效地进行结肠肿瘤治疗,无论是在手术还是在其他辅助治疗方面都值得我们深入地探讨和研究。