NDLI: Genetic epidemiology of cardiometabolic risk factors and their clustering patterns in Mexican American children and adolescents: the SAFARI Study

Content Provider	Springer Nature Link
Author	Fowler, Sharon P. Puppala, Sobha Arya, Rector Chittoor, Geetha Farook, Vidya S. Schneider, Jennifer Resendez, Roy G. Upadhayay, Ram Prasad VandeBerg, Jane Hunt, Kelly J. Bradshaw, Benjamin Cersosimo, Eugenio VandeBerg, John L. Almasy, Laura Curran, Joanne E. Comuzzie, Anthony G. Lehman, Donna M. Jenkinson, Christopher P. Lynch, Jane L. DeFronzo, Ralph A. Blangero, John Hale, Daniel E. Duggirala, Ravindranath
Copyright Year	2013
Abstract	Pediatric metabolic syndrome (MS) and its cardiometabolic components (MSCs) have become increasingly prevalent, yet little is known about the genetics underlying MS risk in children. We examined the prevalence and genetics of MS-related traits among 670 non-diabetic Mexican American (MA) children and adolescents, aged 6–17 years (49 % female), who were participants in the San Antonio Family Assessment of Metabolic Risk Indicators in Youth study. These children are offspring or biological relatives of adult participants from three well-established Mexican American family studies in San Antonio, TX, at increased risk of type 2 diabetes. MS was defined as ≥3 abnormalities among 6 MSC measures: waist circumference, systolic and/or diastolic blood pressure, fasting insulin, triglycerides, HDL-cholesterol, and fasting and/or 2-h OGTT glucose. Genetic analyses of MS, number of MSCs (MSC-N), MS factors, and bivariate MS traits were performed. Overweight/obesity (53 %), pre-diabetes (13 %), acanthosis nigricans (33 %), and MS (19 %) were strikingly prevalent, as were MS components, including abdominal adiposity (32 %) and low HDL-cholesterol (32 %). Factor analysis of MS traits yielded three constructs: adipo-insulin-lipid, blood pressure, and glucose factors, and their factor scores were highly heritable. MS itself exhibited 68 % heritability. MSC-N showed strong positive genetic correlations with obesity, insulin resistance, inflammation, and acanthosis nigricans, and negative genetic correlation with physical fitness. MS trait pairs exhibited strong genetic and/or environmental correlations. These findings highlight the complex genetic architecture of MS/MSCs in MA children, and underscore the need for early screening and intervention to prevent chronic sequelae in this vulnerable pediatric population.
Starting Page	1059
Ending Page	1071
Page Count	13
File Format	PDF
ISSN	03406717
Journal	Human Genetics
Volume Number	132
Issue Number	9
e-ISSN	14321203
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-06-05
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human Genetics Molecular Medicine Gene Function Metabolic Diseases
Content Type	Text
Resource Type	Article
Subject	Genetics Genetics (clinical)

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