TITLE

Obesity and the Microvasculature: A Systematic Review and Meta-Analysis

AUTHOR(S)
Boillot, Adrien; Zoungas, Sophia; Mitchell, Paul; Klein, Ronald; Klein, Barbara; Ikram, Mohammad Kamran; Klaver, Caroline; Wang, Jie Jin; Gopinath, Bamini; Tai, E. Shyong; Neubauer, Aljoscha Steffen; Hercberg, Serge; Brazionis, Laima; Saw, Seang-Mei; Wong, Tien-Yin; Czernichow, Sébastien
PUB. DATE
February 2013
SOURCE
PLoS ONE;Feb2013, Vol. 8 Issue 2, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Overweight and obesity are thought to significantly influence a person's risk of cardiovascular disease, possibly via its effect on the microvasculature. Retinal vascular caliber is a surrogate marker of microvascular disease and a predictor of cardiovascular events. The aim of this systematic review and meta-analysis was to determine the association between body mass index (BMI) and retinal vascular caliber. Methods and Findings: Relevant studies were identified by searches of the MEDLINE and EMBASE databases from 1966 to August 2011. Standardized forms were used for data extraction. Among over 44,000 individuals, obese subjects had narrower arteriolar and wider venular calibers when compared with normal weight subjects, independent of conventional cardiovascular risk factors. In adults, a 1 kg/m2 increase in BMI was associated with a difference of 0.07 μm [95% CI: −0.08; −0.06] in arteriolar caliber and 0.22 μm [95% CI: 0.21; 0.23] in venular caliber. Similar results were found for children. Conclusions: Higher BMI is associated with narrower retinal arteriolar and wider venular calibers. Further prospective studies are needed to examine whether a causative relationship between BMI and retinal microcirculation exists.
ACCESSION #
87623396

 

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