胚胎干细胞研究面面观

人胚胎干细胞来自具有发育成一个个体潜力的人胚胎,其研究引发了一场伦理大辩论。就胚胎干细胞的概念、人胚胎干细胞研究将带给人类的巨大效益和研究所面临需要解决的技术难题,进行了重点阐述,提出了科学技术的发展是解决伦理争议的根本手段。     

胚胎干细胞源性配子细胞的诞生对伦理学的冲击

胚胎干细胞在伦理学界引发的争论尚未平息,胚胎干细胞源性配子的诞生又在更深层次对伦理学产生了新的冲击.ESDG将在解决人类生殖问题中作出重要贡献,特别是给合法结婚的同性恋者带来了拥有带有自身遗传性状后代的希望.但是,这方面的进展势必会与伦理学产生冲突,并且有多方面的伦理问题需要人类慎重考虑.     

Dizziness- and Palpitations-predominant Orthostatic Panic: Physiology,Flashbacks, and Catastrophic Cognitions

In an orthostatic challenge, Cambodian patients with orthostatic panic in the last month (OP patients) sometimes panicked during orthostatic challenge, whereas those without orthostatic panic in the last month (NOP patients) did not. Also, OP patients with primarily dizziness during orthostatic challenge panic (OP_OCP-D) had a less vigorous physiological response than two other groups: (a) OP patients with primarily palpitations during orthostatic challenge panic (OP_OCP-P) and (b) NOP patients who had no symptoms during orthostatic challenge (NOP_NOCP-NS). Among the patients experiencing orthostatic challenge–induced panic (i.e., the OP_OCP-D and OP_OCP-P patients), there were prominent orthostatic challenge–induced flashbacks and catastrophic cognitions, and the severity of orthostatic challenge–induced flashbacks and catastrophic cognitions correlated with the severity of orthostatic panic in the previous month and with the severity of orthostatic challenge–induced panic.     

持续性植物状态若干问题的探讨

明确意识的含义及意识障碍的分类是分析持续性植物状态的前提。根据多年临床经验对持续性植物状态的定义、评分标准、诊断与鉴别诊断进行深入割析。植物状态的研究取得相当进展,但从诊断、评分到治疗手段仍面临诸多困惑,而神经干细胞移植和神经电刺激术是未来希望所在。     

胰岛细胞移植治疗1型糖尿病现状与未来

自2000年加拿大Edmonton报道了7例1型糖尿痛患者施行胰岛细胞移植术成功以来,越来越多的人把注意力投向了胰岛细胞移植的领域。然而,临床移植工作的成功开展还面临两大困难,一方面现有的胰岛细胞来源已经远远不能满足临床移植的需要,另一方面,现有免疫抑制方案造成了很多副作用。近年来,科技工作者正在探索新的途径,寻找新的胰岛来源。特别是包括体外重编程干细胞（iPS）、调节性T细胞和脐血干细胞在内的多种新技术的研究工作取得了许多进展,将为我们提供更多的选择,有可能成为今后的发展方向。本文就胰岛细胞移植治疗1型糖尿病的现状与未来展望进行简要的综述。     

噻唑烷二酮类药物在1型糖尿病治疗中的价值

噻唑烷二酮类药物（TZD）已在2型糖尿病中广泛应用。鉴于TZD具有增加胰岛素敏感性、抗炎症、调节免疫等作用,对它在1型糖尿病中的应用价值亦有探讨,这有助于指导实践和进一步研究。     

胰腺干细胞研究中的思考

从干细胞研究发展和胰腺生理病理学研究发展两个方面,横向和纵向两个角度阐述了胰腺干细胞研究的思路,用辩证认识论和普遍联系与对立统一原理分析了胰腺干细胞研究中所面临的问题和挑战,提出应对的策略和方法,并结合胰腺干细胞发展现状,展望其应用前景。     

Parallel processing across neural systems: implications for a multiple memory system hypothesis

A common conceptualization of the organization of memory systems in brain is that different types of memory are mediated by distinct neural systems. Strong support for this view comes from studies that show double (or triple) dissociations between spatial, response, and emotional memories following selective lesions of hippocampus, striatum, and the amygdala. Here, we examine the extent to which hippocampal and striatal neural activity patterns support the multiple memory systems view. A comparison is made between hippocampal and striatal neural correlates with behavior during asymptotic performance of spatial and response maze tasks. Location- (or place), movement, and reward-specific firing patterns were found in both structures regardless of the task demands. Many, but not all, place fields of hippocampal and striatal neurons were similarly affected by changes in the visual and reward context regardless of the cognitive demands. Also, many, but not all, hippocampal and striatal movement-sensitive neurons showed significant changes in their behavioral correlates after a change in visual context, irrespective of cognitive strategy. Similar partial reorganization was observed following manipulations of the reward condition for cells recorded from both structures, again regardless of task. Assuming that representations that persist across context changes reflect learned information, we make the following conclusions. First, the consistent pattern of partial reorganization supports a view that the analysis of spatial, response, and reinforcement information is accomplished via an error-driven, or match-mismatch, algorithm across neural systems. Second, task-relevant processing occurs continuously within hippocampus and striatum regardless of the cognitive demands of the task. Third, given the high degree of parallel processing across allegedly different memory systems, we propose that different neural systems may effectively compete for control of a behavioral expression system. The strength of the influence of any one neural system on behavioral output is likely modulated by factors such as motivation, experience, or hormone status.     

Can Bioethics be Lutheran?

Abstract :  A Lutheran bioethics must rest on a reconstructed version of Martin Luther's ethics. In the article it is shown that this ethics is Christian in that it has faith in Jesus Christ as its source. But the ethics of neighbor love is practiced in the secular world where it to some extent corresponds with natural law ethics. A Christian believer acts ethically both as an individual and as a citizen. Against the background of this understanding of Lutheran ethics, the position of Ted Peters and Gilbert Meilaender on genetics and stem cells is presented and criticized. One conclusion is that there is no Lutheran doctrine on the status of the human embryo.     

骨髓间充质干细胞移植治疗感音神经性聋的进展及评价

目前感音神经性聋缺乏直接有效的药物治疗措施,基因治疗及干细胞移植治疗为临床治疗提供新的思路。骨髓间充质干细胞具有异于其他干细胞的优点,耳蜗内移植后能起到基因治疗的目的,并有潜在的分化为内耳功能细胞的功能,但仍面临诸多尚待解决的问题。