[Renal consequences of obesity]

Area of Science:

• Nephrology
• Endocrinology
• Metabolic Syndrome

Context:

• Rising obesity rates correlate with increased chronic kidney disease (CKD) prevalence.
• Obesity acts as an independent risk factor for kidney damage, including albuminuria and glomerulosclerosis.
• Metabolic syndrome, common in type-2 diabetes and linked to abdominal obesity, contributes to renal anomalies.

Purpose:

• To elucidate the multifaceted impact of obesity on kidney health.
• To highlight the mechanisms linking obesity to renal dysfunction, including hyperfiltration and inflammation.
• To emphasize the importance of non-indexed GFR in assessing renal risk and treatment efficacy in obese individuals.

Summary:

• Obesity exacerbates CKD through diabetes and hypertension, and independently increases risks of albuminuria and glomerulosclerosis.
• Renal anomalies in obesity include hyperfiltration, microalbuminuria, glomerulomegaly, and glomerulosclerosis.
• Adipose tissue releases adipokines that promote inflammation and sympathetic hyperactivity, worsening kidney lesions, partly due to adiponectin resistance.
• Hypertension in obesity is linked to salt sensitivity and renin-angiotensin system (RAS) overactivity.

Impact:

• Weight loss, potentially via bariatric surgery, is a primary treatment strategy.
• Renin-angiotensin system (RAS) antagonists are crucial for managing hypertension and protecting kidneys.
• Understanding these links is vital for developing targeted interventions to mitigate kidney disease progression in obese populations.