In vivo mapping of hemodynamic responses mediated by tubuloglomerular feedback in hypertensive kidneys.

ABSTRACT: The kidney has a sophisticated vascular structure that performs the unique function of filtering blood and managing blood pressure. Tubuloglomerular feedback is an intra-nephron negative feedback mechanism stabilizing single-nephron blood flow, glomerular filtration rate, and tubular flow rate, which is exhibited as self-sustained oscillations in single-nephron blood flow. We report the application of multi-scale laser speckle imaging to monitor global blood flow changes across the kidney surface (low zoom) and local changes in individual microvessels (high zoom) in normotensive and spontaneously hypertensive rats in vivo. We reveal significant differences in the parameters of TGF-mediated hemodynamics and patterns of synchronization. Furthermore, systemic infusion of a glucagon-like-pepti

SUBMITTER: Lee B 

PROVIDER: S-EPMC10713540 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature