The dynamic distribution of nitric oxide synthase in the small intestine of mice with intestinal radiation sickness

ＴｈｅｄｙｎａｍｉｃｄｉｓｔｒｉｂｕｔｉｏｎｏｆｎｉｔｒｉｃｏｘｉｄｅｓｙｎｔｈａｓｅｉｎｔｈｅｓｍａｌｌｉｎｔｅｓｔｉｎｅｏｆｍｉｃｅｗｉｔｈｉｎｔｅｓｔｉｎａｌｒａｄｉａｔｉｏｎｓｉｃｋｎｅｓｓＷｅｉＬｉｃｈｕｎ（魏丽春）；ＧｕｏＹａｏ（郭鹞）（...     

慢性活动性肝炎中单核性细胞超微形态研究

经电镜观察,慢活肝中主要为淋巴细胞及单核巨噬细胞浸润。淋巴细胞分3型,通过4种方式与肝细胞接触,可能代表杀伤肝细胞的动态过程。与肝细胞接触的主要为起细胞毒作用的T_8~+Ⅱ型淋巴细胞及单核巨噬细胞。多数T_4~+淋巴细胞为Ⅰ型淋巴细胞,可能为T辅助细胞。在肝细胞损伤中,淋巴细胞及单核巨噬细胞均起重要作用。     

Prevalence of vitamin B12 deficiency among geriatric outpatients.

BACKGROUND. Healthy people can have low levels of cobalamin (vitamin B12) without symptoms or signs of cobalamin deficiency. Early detection of deficiency is imperative for treatment to be effective. Development of radioimmunoassay tests has greatly improved accurate determination of cobalamin (Cbl) levels. Nevertheless, results of studies of Cbl deficiency vary widely because of the variety of populations studied. METHODS. In a prospective study, we tested 100 consecutive, unselected geriatric outpatients in a primary care setting to determine the prevalence of cobalamin deficiency. All patients, 65 years of age or older, who visited the office of one of the authors during a period of 11 consecutive working days, had their serum Cbl level checked. If the level was 299 pg/mL or lower, serum intrinsic factor and parietal cell antibodies, serum gastrin, part 1 Schilling test, serum methylmalonic acid, and total homocysteine were done, when possible, for the diagnosis of type A gastritis and intracellular Cbl deficiency. RESULTS. Sixteen percent of geriatric outpatients had serum Cbl levels of 200 pg/mL or below, and 21% had levels between 201 and 299 pg/mL. Among the 16 patients with levels < or = 200 pg/mL, 2 patients had macrocytic anemia, 3 patients had peripheral neuropathy, and 8 patients had type A gastritis. Among the 21 patients with levels of 201 to 299 pg/mL, 2 patients had peripheral neuropathy, 9 patients had type A gastritis, and none of the patients had macrocytic anemia. Among the patients whose methylmalonic acid and total homocysteine levels were determined, the results were high in 80% of those with Cbl levels < or = 200 pg/mL and in 33% of those with levels from 201 to 299 pg/mL. CONCLUSIONS. The prevalence of Cbl deficiency in geriatric outpatients was found to be higher than in any recent report. The lower limit of the normal range for Cbl level should be increased to 300 pg/mL.     

华蟾蜍毒素对离体豚鼠输精管的作用

华蟾蜍毒素(华蟾素)使离体豚鼠输精管产生剂量依赖性收缩反应,利血平化豚鼠输精管及冷藏输精管对华蟾素反应减弱。给酚妥拉明、维拉帕米后,输精管对华蟾素反应均受抑制,溴苄胺可使反应潜伏期缩短。结果提示华蟾素收缩输精管反应可能与其促进肾上腺素能神经末稍NA释放有关。     

烫伤大鼠细胞免疫抑制与肠源性内毒素血症的关系

采用大鼠４０％ＴＢＳＡⅢ度烫伤模型，将动物随机分烫伤对照组和选择性消脱污染防治组，探讨烫伤大鼠全身性细胞免疫抑制与肠源性内毒素血症的关系。结果显示，大鼠４０％Ⅲ度烫伤后脾细胞对促有丝分裂原增殖应答反应、诱生白介素－２（ＩＬ－２）活性及Ｔ细胞亚群（Ｔｈ／Ｔｓ）比值明显下降，预防性进行ＳＯＤ动物，内毒素血症发生率显著降低，脾细胞增殖应答反应和ＩＬ－２活性的诱生能力均明显恢复（Ｐ〈０．０５￣０．０１），     

脾结核的临床特征

目的 探讨脾结核的临床特点、诊断和治疗。方法 回顾性分析经临床、手术及病理证实的11例脾结核的临床特征。结果 11例患者中，男7例，女4例，平均年龄29岁。6例术后证实，5例经内科保守治疗后证实。多数患者表现为发热、消瘦、血沉增快、贫血、脾肿大，B超发现脾脏肿大11例，其中8例脾内多发占位，3例为孤立性占位；7例行CT检查，6例发现脾脏多发性大小不等的结节状低密度灶，1例为单发类圆形低密度影，边缘不清，增强扫描病灶内部无强化；6例患者伴后腹膜、脾门区等淋巴结肿大，5例患者伴其它脏器结核。结论 不明原因发热、消瘦、血沉增快、贫血、脾肿大为脾结核的主要临床表现，腹部B超和腹部CT能对脾结核作出较准确的判断，脾结核患者经正规治疗可治愈。     

原癌基因C－erb B－2蛋白产物在前列腺癌中的表达

应用抗Ｃ－ｅｒｂＢ－２癌蛋白抗体对３０例前列腺癌进行研究，同时选取１０例正常前列腺组织作为对照。结果表明Ｃ－ｅｒｂＢ－２蛋白与肿瘤分化程度有关。并可能对判断其生物学行为，评估预后有重要意义。     

The postoperative recurrence of crohn's disease: An analysis of 37 patients with crohn's disease who underwent endoscopy during initial surgery

A total 37 patients with Crohn's disease who underwent intraoperative endoscopy during resection of the affected intestine were evaluated in this study. The average age of the patients at surgery was 23.2 years. The residual lesions in the remaining intestine identified by intraoperative endoscopy were classified according to their pathologic profiles into three groups: A, B and C. In group A, comprising patients with longitudinal ulcers and/or a cobblestone appearance, 10 of 12 patients had recurrence. In 5 of these 10, the residual lesions were exacerbated and 2 required a further operation. The remaining 5 patients showed recurrence at the site of previous anastomosis and 2 of these 5 required additional surgery.In group B, comprising patients with small ulcers, aphthoid ulcers, or scars, and group C, comprising patients with no residual lesions, recurrence was observed in 13 of 16, and 3 of 9 patients, respectively. The recurrent lesions were all found proximal to, or at the site of previous anastomosis. Additional operations were performed on 3 of the group B patients. The findings of this study revealed that recurrence requiring additional surgery is more frequent at the site of anastomosis, regardless of the endoscopic appearance of the residual lesions.     

巢式聚合酶链反应检测脑脊液中单纯疱疹病毒DNA

应用巢式聚合酶链反应(PCR)检测患者脑脊液(CSF)中单纯疱疹病毒1型(HSV-1)DNA。23例经鞘内HSV-1特异性IgG抗体检测阳性的“HSV-1型性脑炎(HSE)”中19例PCR阳性,4例阴性患者病程均超过1个月。22例IgG阴性的“散发性脑炎”中7例PCR阳性,此7例皆于发病1周内检查CSF,其中2例取材于发病当日。1周后复查7例患者,CSF PCR仍为阳性,IgG皆阴性,提示PCR适用于HSE的早期诊断。