Renal Hemodynamics and Oxidative Stress in Hypertension
Summary
Hypertension exerts profound effects on renal haemodynamics by elevating glomerular capillary pressure and altering the autoregulatory capacity of afferent arterioles. These changes compromise the myogenic response and tubuloglomerular feedback, leading to hyperfiltration, proteinuria and progressive nephron loss. Concurrently, enhanced generation of reactive oxygen species via NADPH oxidases and mitochondrial pathways overwhelms antioxidant defences, further impairing endothelial-dependent vasodilatation and promoting inflammation and fibrosis. Interactions between the renin–angiotensin system and oxidative pathways amplify vasoconstriction and tubular injury, creating a vicious cycle that accelerates chronic kidney disease. Recent advances have begun to unravel genetic predispositions, novel biomarkers and targeted interventions aimed at restoring renal blood flow, reducing oxidative damage and improving long-term outcomes.
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Renal Hemodynamics and Oxidative Stress in Hypertension publication trend
The graph below shows the total number of articles in renal hemodynamics and oxidative stress in hypertension across all publications each year (not limited to Nature Index journals).
Technical terms
Renal haemodynamics: The mechanisms regulating blood flow and pressure within the renal vasculature to maintain glomerular filtration.
Oxidative stress: A state in which reactive oxygen species exceed antioxidant capacity, leading to cellular damage.
Afferent arteriole: The small artery that delivers blood to the glomerulus and participates in autoregulation of renal blood flow.
Myogenic response: The intrinsic ability of vascular smooth muscle to constrict in response to increased intraluminal pressure.
Tubuloglomerular feedback: A mechanism by which the macula densa senses sodium delivery and adjusts afferent arteriole tone to stabilise filtration rate.
Reactive oxygen species (ROS): Chemically reactive molecules derived from oxygen, such as superoxide and hydrogen peroxide, which can damage proteins, lipids and DNA.
References
- Genetic susceptibility of hypertension‐induced kidney disease. Physiological Reports (2020).
- Impaired myogenic response of the afferent arteriole contributes to the increased susceptibility to renal disease in Milan normotensive rats. Physiological Reports (2017).
- Effects of Single and Combined Losartan and Tempol Treatments on Oxidative Stress, Kidney Structure and Function in Spontaneously Hypertensive Rats with Early Course of Proteinuric Nephropathy. PLOS ONE (2016).
- Involvement of Vanin-1 in Ameliorating Effect of Oxidative Renal Tubular Injury in Dahl-Salt Sensitive Rats. International Journal of Molecular Sciences (2019).
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