Duchenne型肌营养不良基因诊断技术的发展及其哲学评析

Duchenne型肌营养不良（DMD）是发病率较高的神经系统遗传病,其基因突变机制复杂,探索简便、准确的基因突变检测技术是DMD研究的热点之一。随着分子生物学的进展,DMD基因诊断技术不断发展,经历了DNA印迹杂交、聚合酶链反应、生物芯片、多重连接探针扩增等。其发展过程带给我们许多哲学思考。     

The nature (and nurture) of personality disorders

Personality disorders have a long history in the literature but a short scientific history. The point prevalence of personality disorders is 10%, but the lifetime prevalence is probably 30–40%. Genetic factors contribute to around 40–50% of the variation in the development of personality disorders. The effect of shared environment is very small or non‐existent. Some researchers have tried to promote gene‐environment interaction. However, in reality, the studies investigated gene‐situation interaction, as the “environment” may in reality be partly of a genetic nature. Thus, we are dealing with an unknown part of gene‐gene interaction. Gene‐experience (not gene‐environment) correlations are the rule in human life. Personality disorders co‐occur (are comorbid) with symptom disorders (Axis I) and correlate with common personality dimensions. Possibly, the concept of personality disorder could merge with dysfunctional personality types. But it is likely that the concept will survive on its own.     

Reviews

Books reviewed: Science and Theology: An Introduction, by JohnPolkinghorne Genesis, Genes, and God: Values and Their Origins in Naturaland Human History, by Holmes Rolston, III Playing God? Genetic Determinism and Human Freedom, by Ted Peters Green Space, Green Time: The Way of Science, by Connie Barlow Reconstructing Nature: The Engagement of Science and Religion , by John Brooke and GeoffreyCantor Whatever Happened to the Soul? Scientific and Theological Portraits ofHuman Nature, Edited by Warren S. Brown, Nancey Murphy, and H.Newton Malony The Turn of the Millennium: An Agenda for Christian Religion in an Age of Science, by Jeffrey G. Sobosan God without the Supernatural: A Defense of Scientific Theism, by Peter Forrest Religion and Creation, by Keith Ward     

GENETIC AND REPRODUCTIVE TECHNOLOGIES IN THE LIGHT OF RELIGIOUS DIALOGUE

Since the gene splicing debates of the 1980s, the public has been exposed to an ongoing sequence of genetic and reproductive technologies. Many issue areas have outcomes that lose track of people's inner values or engender opposing religious viewpoints defying final resolution. This essay relocates the discussion of what is an acceptable application from the individual to the societal level, examining technologies that stand to address large numbers of people and thus call for policy resolution, rather than individual fiat, in their application. A major source of guidance is the “Genetic Frontiers” series of professional dialogues and conferences held by the National Conference for Community and Justice from 2002 to 2004. Genetic testing, human gene therapy, genetic engineering of plants and animals, and stem cell technology are examined. While differences in perspective on the beginning of life persist, a stepwise approach to the examination of genetic testing reveals areas of general agreement. Stewardship of life, human co‐creativity with the divine, and social justice help define the bounds of application of genetic engineering and therapy; compassionate care plays a major role in establishing stem cell policy. Active, sustained dialogue is a useful resource for enabling sharing of religious values and crystallization of policies.     

Duchenne型肌营养不良基因诊断技术的发展及其哲学评析

Duchenne型肌营养不良(DMD)是发病率较高的神经系统遗传病,其基因突变机制复杂,探索简便、准确的基因突变检测技术是DMD研究的热点之一.随着分子生物学的进展,DMD基因诊断技术不断发展,经历了DNA印迹杂交、聚合酶链反应、生物芯片、多重连接探针扩增等.其发展过程带给我们许多哲学思考.     

Beyond the Sociobiological Dilemma: Social Emotions and the Evolution of Morality

Is morality biologically altruistic? Does it imply a disadvantage in the struggle for existence? A positive answer puts morality at odds with natural selection, unless natural selection operates at the level of groups. In this case, a trait that is good for groups though bad (reproductively) for individuals can evolve. Sociobiologists reject group selection and have adopted one of two horns of a dilemma. Either morality is based on an egoistic calculus, compatible with natural selection; or morality continues tied to psychological and biological altruism but not as a product of natural selection. The dilemma denies a third possibility—that psychological altruism evolves as a biologically selfish trait. I discuss the classical treatments of the paradox by Charles Darwin ([1871] 1989) and Robert Trivers (1971), focusing on the role they attribute to social emotions. The upshot is that both Darwin and Trivers sketch a natural‐selection process relying on innate emotional mechanisms that render morality adaptive for individuals as well as for groups. I give additional reasons for viewing it as a form of natural, instead of only cultural, selection.     

为什么要对人类作图--人类基因组计划对人类社会的意义暨纪念人类基因组计划实施10周年

人类基因组计划 (HGP)经过 10年的实施 ,已取得巨大成果。该计划将显著改变医疗科学 ,同时也潜伏着新的危险。随着HGP的发展 ,人类社会在基因检查、药物基因组研究及基因治疗等三大应用领域有着美好的发展前景 ,同时也面临着新的困境。在将HGP成果应用于人类社会时 ,我们必须及时考虑和解决所涉及的伦理、道德和社会等问题 ,从而使HGP成果更好地为人类社会服务。     

DRD4基因与亲社会行为的关联及其潜在脑机制

DRD4基因是亲社会行为的重要候选基因,且与环境交互影响亲社会行为的发生发展。通过梳理既有研究,本文从性别差异、亲社会行为的不同类型及发展动态性等角度探讨了亲社会行为遗传研究存在分歧的原因,并在此基础上探索了DRD4基因作用于亲社会行为的潜在脑机制。未来研究应采用纵向设计探究DRD4基因影响亲社会行为的发展动态性问题,并深入探索其性别差异;采用多质多法分析考察不同类型亲社会行为遗传机制的差异性;采用影像遗传学设计揭示“DRD4基因—脑—亲社会行为”作用机制。     

反社会行为的遗传基础:基因多态性和DNA甲基化

反社会行为是受遗传与环境共同影响的不良行为。分子遗传学和神经生物学的研究发现,基因以基因多态性和DNA甲基化的方式影响脑结构、功能及脑内神经递质的产生和释放,进而影响反社会行为的发生发展。本文从基因多态性和DNA甲基化两方面整理了5-HTT、MAOA、OXTR等8个候选基因与反社会行为的关联。并提出未来研究需进一步探讨基因、脑和神经递质对反社会行为的联合作用。同时,扩展多基因位点、基因多态性与DNA甲基化、积极环境与基因交互作用对反社会行为影响的研究,以全面探索反社会行为发生的遗传基础,进而更加有效的预防反社会行为。