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1遗传与环境因素。遗传因素对人类血压的影响,目前已经被国内外学者广泛地接受,且多倾向于多基因遗传的观点。但是,国内外大量有关确定遗传因素对血压作用的研究资料中显示,遗传度的分析结果存在较大差异,这可能与研究对象及分析方法的差异有关,然而也不能排除其他因素(如环境因素)的影响。有研究显示,在同卵双生家系的研究中认为:血缘关系为1的同卵双生之间血压的相关系数并不为1,血缘系数为1/2的各种亲属之间血压的相关系数也不都是0.5。在对血压变异影响的估计中,环境组SBP、DBP分别为0.52、0.44;遗传组SBP、DBP分别占0.48、0.56;在高原环境下,儿童动脉血压在白天和夜晚均有所增加,夜晚的记录提示,不论是
1 genetic and environmental factors. The influence of genetic factors on human blood pressure has been widely accepted by scholars both at home and abroad, and the tendency of polygenes is more. However, a great deal of research data on determining the effect of genetic factors on blood pressure at home and abroad shows that the genetic analysis results are quite different, which may be related to the differences between the research objects and the analysis methods. However, other factors (such as environmental factors )Impact. Studies have shown that twins in the study of the same family that: the blood relationship between the same twins blood pressure is not a correlation coefficient of 1, the coefficient of blood relative coefficient of correlation between blood relatives of 1/2 Not all is 0.5. SBP and DBP in the environmental group were 0.52 and 0.44, respectively, and SBP and DBP in the genetic group accounted for 0.48 and 0.56, respectively. In the plateau environment, arterial blood pressure increased in both day and night, Record prompts, either