目的 探讨miRNA基因多态性与钠钾饮食干预后血压反应性之间的关系.方法 本课题组2004年从中国陕西宝鸡7个村庄的124个家庭中招募514名参与者进行慢性盐负荷试验干预,包括3 d基线期、7 d低盐饮食、7 d高盐饮食和7 d高盐补钾饮食干预.纳入19个miRNA-SNP位点进行分析研究.结果 在钠钾饮食干预过程中,受试者的血压在低盐期呈下降趋势,高盐期呈现上升趋势,而在高盐补钾后,血压则再次下降.在低盐期,miR-210-3p SNP rs12364149与收缩压反应性、舒张压反应性及平均动脉压反应性显著相关,miR-4638-3p SNP rs6601178与收缩压反应性显著相关,而miR-26b-3p SNPrs115254818与平均动脉压反应性显著相关.在高盐干预后,miR-26b-3p SNP rs115254818与收缩压反应性、舒张压反应性及平均动脉压反应性显著相关;miR-1307-5p SNP rs 11191676、rs2292807与收缩压反应性及平均动脉压反应性密切相关;miR-4638-3p SNP rs6601178、miR-210-3p SNP rs12364149以及miR-382-5p SNP rs4906032、rs4143957与收缩压反应性存在显著关联性.此外,在给予补钾干预后miR-26b-3p SNP rs115254818与收缩压反应性、舒张压反应性及平均动脉压反应性关联显著;miR-1307-5p SNP rs11191676、rs2292807以及miR-19a-3p SNP rss4284505与收缩压反应性显著相关.结论 miRNA基因多态性与血压钠钾反应性密切相关,提示miRNA基因可能参与血压盐敏感性及钾敏感性的形成.
Abstract
Objective To investigate the relationship of miRNA gene polymorphisms with blood pressure(BP)responses to the sodium and potassium diet intervention.Methods In 2004,we recruited 514 participants from 124 families in seven villages of Baoji,Shaanxi Province,China.All subjects were given a three-day normal diet,followed by a seven-day low-salt diet,a seven-day high-salt diet,and finally a seven-day high-salt and potassium supplementation.A total of 19 miRNA single nucleotide polymorphisms(SNPs)were selected for analysis.Results Throughout the sodium-potassium dietary intervention,the BP of the subjects fluctuated across all phases,showing a decrease during the low-salt period and an increase during the high-salt period,followed by a reduction in BP subsequent to potassium supplementation during the high-salt diet.MiR-210-3p SNP rs 12364149 was significantly associated with systolic BP(SBP),diastolic BP(DBP)and mean arterial pressure(MAP)responses to low-salt diet.MiR-4638-3p SNP rs6601178 was significantly associated with SBP while miR-26b-3p SNP rs115254818 was significantly associated with MAP responses to low-salt intervention.In addition,miR-26b-3p SNP rs115254818 was significantly correlated with SBP,DBP and MAP responses to high-salt intervention.MiR-1307-5p SNPs rs1 1191676 and rs2292807 were associated with SBP and MAP responses to high-salt diet.MiR-4638-3p SNP rs6601178,miR-210-3p SNP rs12364149,miR-382-5p SNP rs4906032 and rs4143957 were significantly associated with SBP response to high-salt diet.In addition,miR-26b-3p SNP rs115254818 was significantly associated with SBP,DBP and MAP responses to potassium supplementation.MiR-1307-5p SNPs rs11191676,rs2292807,and miR-19a-3p SNP rs4284505 were significantly associated with SBP responses to high-salt and potassium supplementation.Conclusion miRNA gene polymorphisms are associated with BP response to sodium and potassium,suggesting that miRNA genes may be involved in the pathophysiological process of salt sensitivity and potassium sensitivity.
关键词
miRNA/基因多态性/盐敏感性/血压的钠钾反应性
Key words
miRNA/genetic polymorphism/salt-sensitivity/blood pressure response to salt and potassium
维普
万方数据