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- W2004236235 abstract "The finding of adipocyte-derived hormone leptin as an overstimulator of sympathetic activity brought a new perspective to the pathophysiological mechanisms of obesity-hypertension.As aldosterone also increases sympathetic activity, we aimed to assess the relationship between sympathetic overactivity and plasma leptin and aldosterone levels in resistant hypertension (RHTN), comparing the groups with and without T2D.Twenty-five RHTN patients underwent ambulatory electrocardiography to analyze heart rate variability (HRV) in time and frequency domains, which were stratified into two periods: 24 hours and daytime (DT), comprising the records between 2:00 p.m to 6:00 p.m (time domain) and one hour at 3:00 p.m (frequency domain).T2D group (n=10) had higher serum aldosterone and plasma leptin levels than the non-T2D (n=15) (26.0 ± 11.5 vs. 16.9 ± 7.0 ng/dL - p=0.021; 81.368.7 ± 47.086.1 vs 41.228.1 ± 24.523.1 pg/mL - p=0.048, respectively). Both groups had aldosterone correlated with HRV in frequency domain. Non-T2D had aldosterone correlated with DT low frequency in normalized units (LF nu) (r=0.6 [0.12-0.85] p=0.018) and DT high frequency in normalized units (HF nu) (r=-0.6 [-0.85- -0.12] p=0.018). Type-2-diabetes group had aldosterone correlated with DT LF nu (r=0.72 [0.16-0.93] p=0.019) and DT HF nu (r=-0.72 [-0.93- -0.16] p=0.019). However, despite of the importance of leptin in sympathetic overactivity in hypertension, leptin did not correlate with HRV.Aldosterone seems to overdrive sympathetic activity in RHTN with and without T2D. This information combined with the clinical efficacy of mineralocorticoid receptor blocker in RHTN may reinforce that aldosterone is a major player to be a therapeutic target in RHTN." @default.
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- W2004236235 date "2012-07-01" @default.
- W2004236235 modified "2023-09-25" @default.
- W2004236235 title "Leptina e aldosterona na atividade simpática na hipertensão resistente, com ou sem Diabetes Tipo 2" @default.
- W2004236235 doi "https://doi.org/10.1590/s0066-782x2012005000047" @default.
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