Mesangial Cells and Arteriolar Control of GFR
Glomerular Filtration Rate (GFR) is dynamically regulated by hemodynamic changes in renal blood flow and mesangial cell tone within the domain of nephropathophysiology. The core mechanism dictates that afferent arteriolar vasoconstriction reduces GFR via diminished hydrostatic pressure, whereas efferent arteriolar constriction initially elevates GFR through increased capillary hydrostatic pressure before secondary increases in oncotic pressure cause a biphasic decline; conversely, mesangial cell contraction acts as an intrinsic autoregulatory mechanism to decrease GFR by reducing the filtration surface area.
Mesangial Cell Regulation and GFR Changes in Kidney Physiology
Glomerular Filtration Rate (GFR) is dynamically regulated by hemodynamic changes in renal blood flow and mesangial cell tone within the domain of nephropathophysiology. The core mechanism dictates th…