Key result
Renal venous congestion impairs hemodynamics and increases nerve activity, but intact nerves preserve medullary oxygenation.
Why the study?
Renal venous congestion drives renal dysfunction in heart failure, but the mechanisms by which increased renal venous pressure impairs renal function remain poorly understood.
Does experimentally induced renal venous congestion increase renal nerve activity and mediate impairments in renal hemodynamics and tissue oxygenation in an ovine model?
Comparison
Renal nerve intact vs right unilateral renal denervated animals during induced renal venous congestion
Design
Animal experimental study
Authors
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Renal denervation unlikely to alleviate RVP-driven renal impairment in HF; leaves open RAS mediation for targeted investigation.
Does experimentally induced renal venous congestion increase renal nerve activity and mediate impairments in renal hemodynamics and tissue oxygenation in an ovine model?
This preclinical study demonstrates that while renal nerves do not regulate congestion-induced hemodynamic impairments, they play a crucial role in maintaining renal medullary tissue oxygenation during renal venous congestion, a key pathophysiological feature of heart failure.
Aikeremu et al. (2026) studied Renal venous congestion (n=15). Experimentally induced renal venous congestion vs. Intact vs unilateral denervated groups was evaluated on Renal nerve activity, hemodynamics, and tissue oxygenation. Experimentally induced renal venous congestion increased renal nerve activity and impaired renal hemodynamics, while intact renal nerves helped maintain renal medullary tissue oxygenation.
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