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- doi: 10.1002/2211-5463.12579
- issn: 2211-5463
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B. Toffoli et al., « Renal mineralocorticoid receptor expression is reduced in lipoatrophy. », Serveur académique Lausannois, ID : 10.1002/2211-5463.12579
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Obesity is a condition characterized by adipose tissue hypertrophy; it is estimated that the obesity epidemic accounted for 4 million deaths in 2015 and that 70% of these were due to cardiovascular disease (CVD). One of the mechanisms linking obesity to CVD is the ability of adipose tissue to secrete circulating factors. We hypothesized that adipose tissue and its secretory products may influence mineralocorticoid receptor (MR) expression. Here, we showed that expression of MR and its downstream targets (Cnksr3, Scnn1b, and Sgk1) were significantly reduced in the kidneys of peroxisome proliferator-activated receptor-γ null (Pparg Δ/Δ ) and A-ZIP/F-1 (AZIP tg/+ ) lipoatrophic mice with respect to their controls. Intriguingly, MR expression was also found to be significantly reduced in the kidneys of genetically obese ob/ob mice. Our data suggest that adipose tissue contributes to the regulation of MR expression. Given that leptin deficiency seems to be the major feature shared by Pparg Δ/Δ , AZIP tg/+ , and ob/ob mice, we speculate that adipose tissue modulates MR expression through the leptin system.