盐味觉基因型、饮食习惯与健康生物标志物:老年队列研究无相关性。
Salt Taste Genotype, Dietary Habits and Biomarkers of Health: No Associations in an Elderly Cohort.
机构信息
School of Environmental and Life Sciences, The University of Newcastle, Ourimbah, NSW, 2258, Australia.
School of Medicine and Public Health, The University of Newcastle, Gosford, NSW, 2250, Australia.
出版信息
Nutrients. 2020 Apr 10;12(4):1056. doi: 10.3390/nu12041056.
A small amount of emerging research has observed variations between individual sensitivity, preference and intake of salt in the presence of single nucleotide polymorphisms (SNP) on the genes encoding salt taste receptors. Sodium intake is a significant risk factor for common diseases in elderly populations such as hypertension and cardiovascular disease; however, this does not fully explain the risk. Research into the influence of salt taste genetics on diet quality is yet to be undertaken and current research on indicators of health is limited and mixed in the direction of associations. Therefore, a secondary analysis of data from a well-characterised elderly cohort (the cross-sectional Retirement Health and Lifestyle Study, = 536) was conducted to explore relationships between the salt taste-related SNP -rs8065080 (assessed by Taqman genotyping assay), dietary habits and biomarkers of health. Data were analysed with standard least squares regression modelling and Tukey's HSD post hoc tests. No association was found between the -rs8065080 genotype, sodium intake or multiple diet quality indices (assessed by food frequency questionnaire). Sodium-related markers of health including blood pressure and markers of kidney function (urinary creatinine and albumin/creatinine ratio) and general health markers, such as Body Mass Index (BMI), were also not related to -rs8065080 genotype. To date, this study is the most comprehensive investigation conducted to determine if the -rs8065080 genotype relates to sodium intake and health markers influenced by sodium intake. Although no significant relationships were found, these findings are an important contribution to the limited body of knowledge surround this SNP. In addition to further research across other ages and cultures, the -rs8065080 genotype may interact with other ion channels, and so further studies are required to determine if polymorphic variations influence sodium intake, diet and health.
少量新兴研究观察到,在编码盐味觉受体的基因上存在单核苷酸多态性 (SNP) 时,个体对盐的敏感性、偏好和摄入量存在差异。钠摄入量是老年人常见疾病(如高血压和心血管疾病)的一个重要危险因素;然而,这并不能完全解释风险。关于盐味觉遗传学对饮食质量的影响的研究尚未进行,目前关于健康指标的研究在关联方向上有限且混杂。因此,对一个特征明确的老年队列(横断面退休健康和生活方式研究,n=536)的数据进行了二次分析,以探讨与盐味觉相关的 SNP -rs8065080(通过 Taqman 基因分型检测评估)与饮食习惯和健康生物标志物之间的关系。使用标准最小二乘回归模型和 Tukey 的 HSD 事后检验进行数据分析。-rs8065080 基因型、钠摄入量或多个饮食质量指数(通过食物频率问卷评估)之间没有关联。与钠相关的健康标志物,包括血压和肾功能标志物(尿肌酐和白蛋白/肌酐比)以及一般健康标志物,如体重指数 (BMI),也与 -rs8065080 基因型无关。迄今为止,这项研究是最全面的调查,旨在确定 -rs8065080 基因型是否与钠摄入量以及受钠摄入量影响的健康标志物有关。尽管没有发现显著的关系,但这些发现是对围绕该 SNP 的有限知识体系的重要贡献。除了在其他年龄和文化中进行进一步研究外,-rs8065080 基因型可能与其他离子通道相互作用,因此需要进一步研究以确定多态性变异是否影响钠摄入量、饮食和健康。