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据Mitchell C2014年4月7日(Proc Natl Acad Sci USA,2014)报道,科学家对40个来自美国大城市的9岁男孩的DNA进行检查发现,来自恶劣环境家庭的男孩端粒平均缩短19%。端粒长度一直被认为是慢性应激的生物标记。该研究结果可让科学家进一步理解社会环境对儿童健康产生长期影响。曾经有学者发表在《科学》杂志的论文证明,早期社会教育能提高贫困儿童成年后的健康状况,与这一研究相呼应。美国加州大学旧金山分校健康心理学家Epel E和宾夕法尼亚州立大学分子生物学家项目的负责人Notterman D一起研究该课题。受试者的DNA样品和社会经济相关资料的采集是脆弱家庭和儿童福利研究项目的一部分内容,该项目由美国国立卫生研究院资助,追踪1998年~2000年期美国大城市内5 000例非婚生育儿童的健康状况。这些孩子的环境状况通过其母亲受教育水平、
According to Mitchell C (Proc Natl Acad Sci USA, 2014), scientists examined the DNA of 40 9-year-old boys from big cities in the United States and found that on average, boys from harsh home environments had a 19% reduction in telomeres. Telomere length has long been considered a chronic stress biomarker. The results of this study will allow scientists to further understand the long-term impact of the social environment on children’s health. There have been scholar papers published in Science that demonstrate that early social education can improve the health of poor children after their adulthood and echo this research. Epel E, a health psychologist at the University of California, San Francisco, in the United States, and Notterman D, a molecular biologist at Penn State University, studied the subject. Subjects’ DNA samples and the collection of socioeconomic data were part of a project to study the welfare of vulnerable families and children funded by the National Institutes of Health, which tracks 5,000 cases of ill-treatment in major cities in the United States from 1998 to 2000 Health status of childbearing partners. The environmental conditions of these children, through their mothers’ level of education,