基于VPN和SDH技术实现医院异地网络通信及资源共享

随着国家医疗制度的改革和卫生事业的发展,目前很多医院都有分院分布在不同区域内,或异地或同城。这就要求网络能够实现远程互通医疗相关信息,节约成本以及数据的共享和安全传输。较之医院内的局域网早已经不能满足此类需求。为了解决这些问题,,必须借助于新的网络技术来实现。     

血清TSH测定与纸片TSH测定的对比观察

观察了６３例正常成人血清ＴＳＨ与纸片ＴＳＨ关系，并与１０４例新生儿纸片ＴＳＨ进行对比分析。结果表明，成人血清ＴＳＨ与纸片ＴＳＨ无显著性差异；成人纸片ＴＳＨ与新生儿纸片ＴＳＨ也无显著性差异。提示纸片ＴＳＨ测定可代替血清ＴＳＨ测定用于碘缺乏病的人群监测。     

敦煌大宝胶囊对衰老大鼠及肾阳虚小鼠肝脏代谢能力的影响

目的研究敦煌大宝胶囊对衰老大鼠及肾阳虚小鼠肝脏代谢能力的影响。方法采用D-半乳糖颈部大鼠皮下注射造成亚急性衰老动物模型,采用泼尼松小鼠皮下注射,造成肾阳虚动物模型。观察敦煌大宝胶囊对衰老模型大鼠肝组织琥珀酸脱氢酶(SDH)、乳酸脱氢酶(LDH)水平以及肾阳虚小鼠负重游泳后肝糖原和血清乳酸(LA)含量的影响。结果与模型组比较,敦煌大宝胶囊可显著提高衰老模型大鼠肝组织SDH水平(P<0.01),显著降低肝组织LDH水平(P<0.05);敦煌大宝胶囊能明显提高肾阳虚小鼠负重游泳后肝糖原(P<0.05),降低运动后血清LA含量(P<0.05)。结论敦煌大宝胶囊能够改善肝细胞能量代谢,增强细胞有氧呼吸,使细胞处于功能活跃状态,提高衰老大鼠及肾阳虚小鼠肝脏代谢能力。     

湖北钉螺肝脏细胞原代培养的初步研究

目的 研究湖北钉螺肝脏细胞的原代培养方法，观察肝脏细胞琥珀酸脱氢酶（SDH）和乳酸脱氢酶（LDH） 的活性分布。 方法 解剖湖北钉螺取肝脏，用0.2%（体积比）苯扎溴铵（新洁尔灭）浸泡及含抗生素的生理盐水无菌洗涤、磨碎、过滤，收集肝脏细胞。采用联合法和静置悬浮法接种培养。细胞培养液配方: 50 ml M199溶液、3 mg/ml 水解乳蛋白溶液30 ml(平衡盐溶液配制)及胎牛血清20 ml, 混匀，附加常量抗生素（青霉素100 IU/ml、链霉素100 μg/ml、卡那霉素50 μg/ml），混匀，调节pH值为7.2～7.4。于26.5 ℃ 培养。联合法培养的肝脏细胞分别进行Giemsa、SDH和LDH染色，显微镜观察活细胞与染色细胞形态、SDH和LDH的分布，以及观察静置悬浮法培养的肝脏细胞形态。 结果 联合法培养的肝脏细胞贴壁后形态各异，以圆形、椭圆形为主, 也有三角形和不规则形等。细胞大小约（4～16） μm×（6～20） μm。较小细胞形成细胞簇，细胞核不明显，细胞质丰富、透亮。散在分布的单个细胞稍大，细胞核较大而明显，细胞质较少。培养5～7 d 的肝脏细胞逐渐退化。Giemsa染色将细胞分为两种，一种为细胞质呈蓝色，细胞核紫红色；另一种是细胞质呈紫红色，细胞核呈蓝色。SDH和LDH染色，细胞质出现大小不同、深浅不一的蓝色颗粒。静置悬浮法培养的肝脏细胞不易贴壁，多为圆形，细胞核不明显。细胞较小，约为（4～6） μm×（6～8） μm。培养3 d 均被细菌污染。 结论 联合法更适合湖北钉螺肝脏细胞原代培养，SDH和LDH活性位于肝脏细胞质中。     

面肌失神经支配后线粒体变化与功能康复的关系

目的:探讨不同程度面神经失神经支配后口轮匝肌线粒体结构、琥珀酸脱氢酶(SDH)的变化与面肌功能恢复的关系。方法:制造颞骨内面神经麻痹模型,分为面神经压榨5s组(11例)、15s组(10例)、30s组(10例),应用神经电图测试3组的平均阈值差值,SDH染色后,透射电镜观察面神经损伤15,30d后口轮匝肌线粒体结构和SDH阳性反应产物的变化。结果:压榨持续时间越长,反应阈值差值越大,5s组、15s组、30s组的反应阈值差值分别为0.443±0.024,12.174±1.532,15.720±1.536,组间比较差异有显著性意义(F=461.560,P<0.0001)。面神经压榨5s组的平均神经兴奋传导抑制时间为(35±17)min;15s组瞬目反射恢复正常需(47±15)d;30s组半年内未恢复。15s组面神经损伤15d后,线粒体嵴断裂,SDH阳性反应颗粒减少,损伤30d基本恢复正常。30s组面神经损伤15d后,线粒体空泡变性,SDH颗粒明显减少,损伤30d后的线粒体结构和SDH颗粒有轻度恢复。结论:面神经受损伤时间越长,失神经支配程度越重,线粒体病变也越重,面肌功能恢复越难,应早期行面神经减压术。     

大鼠胚胎小脑的SDH酶组化研究

本文应用ＳＤＨ酶组化技术，对Ｅ１４、Ｅ１６、Ｅ１８、Ｅ２０ｄ及新生鼠小脑组织进行了细胞组织化学观察，并对结果作显微图像分析，对所得数据作统计学处理。结果表明胚胎第１６天及新生鼠的小脑ＳＤＨ含量有显著性增加。本文对ＳＤＨ酶含量变化与选择最佳胎龄移植供体的关系作了初步探讨     

Effect of malotilate on paracetamol-induced hepatotoxicity

Malotilate (diisopropyl-1,3-dithiol-2-ylidenemalonate) prevented liver damage induced by paracetamol in male mice only when given 1 h prior to the hepatotoxic agent. Furthermore, it partially inhibited paracetamol-induced glutathione depletion in mouse liver, indicating that the antihepatotoxic activity of malotilate is related to an interaction with the bioactivation of paracetamol.     

Diencephalic modulation of activities of raphe-spinal neurons in the cat

The modulatory effects of diencephalic stimulation on the activities of raphe-spinal neurons were studied extracellularly in cats. Among 240 raphe neurons recorded, 57 neurons were activated antidromically by stimulation of the cervical dorsolateral funiculus. These raphe-spinal neurons were found in the caudal raphe nuclei, i.e., the raphe magnus (43 neurons), raphe obscurus (11), raphe pallidus (2), and raphe pontis (1). All of them responded to innocuous and/or noxious peripheral mechanical stimuli with a broad receptive field. The activities of the majority of these neurons were facilitated by trains of pulse stimulation of the rostral periaqueductal gray and the thalamic relay nucleus but not of the thalamic center median nucleus. The facilitation of firing persisted for more than 3 min after the cessation of train pulse stimulation when the stimulation was applied at 20 Hz for 5 to 30 s. This facilitation was not affected by decortication of the sensorimotor area bilaterally. The facilitatory response to periaqueductal gray stimulation was markedly suppressed by systemic administration of naloxone. On the other hand, that of the thalamic relay nucleus stimulation was found to be unaffected. Based on these findings, the mechanisms of pain relief by stimulation of the rostral periaqueductal gray and thalamic relay nucleus reported in human intractable pain appear to relate, at least partly, to the activation of raphe-spinal neurons. However, the paths to raphe-spinal neurons of stimuli from the periaqueductal gray and the thalamic relay nucleus are thought to be independent from each other based on the different effects of naloxone.     

The isolated perfused lung--a critical evaluation

Recent refinement and application of the technique of perfusing isolated intact lung preparations from suitable experimental animal has enhanced our knowledge of the non-respiratory functions of the lung. The technique consists of perfusion with whole blood or constituted media via pulmonary artery or artificially ventilated lungs. Such preparations have been known to be especially useful for studies of uptake, metabolism and disposition of exogenous and endogenous substances. Recent advances in unilateral, split-lung perfusion in which left and right lungs are unilaterally perfused simultaneously have enabled investigators to maintain paired controls during perfusion. Such techniques are useful in the study of the interactions of endogenous and exogenous chemicals in the lung tissue. Differences between subcellular or lung slice preparations and intact lung perfusion are to be expected on the basis of distorting natural vascular and extra-vascular barriers in the case of in vitro preparations. Areas in which perfused lungs have not been extensively used include uptake and disposition of gases, solvents and vapors, effects of toxic chemicals on respiratory and non-respiratory functions of the lung and alteration of pulmonary mechanisms and hemodynamics in the presence of interacting chemical or physical stimuli. With suitable modifications, application of isolated perfused lung preparations for these investigations should be technically feasible in the future.     

SDH-deficient renal cell carcinoma: a clinicopathological analysis highlighting the role of genetic counselling

Succinate dehydrogenase (SDH)-deficient renal cell carcinoma (RCC) accounts for 0.05–2% of all RCCs. The majority of patients have germline mutations, most frequently in the SDHB gene. People with these mutations are predisposed to developing paragangliomas, phaeochromocytomas and gastrointestinal stromal tumours. Patients should be referred to genetic services for further workup and close surveillance imaging due to the risk of development of further tumours. We present a woman with SDH-deficient RCC and review the literature associated with this uncommon entity.