This is secondary to renal vasoconstriction of the afferent arteriole
Blood enters the glomerulus through the afferent arteriole
and exits via the efferent arteriole.
Local renal baroreceptors located in the afferent arterioles constrict in the face of decreased volume, which leads to renin release.
The vasodilatory prostaglandins act primarily on the afferent arterioles, counteracting the vasoconstrictive effects of angiotensin II mid SNS stimulation, and maintaining RBF despite systemic arteriolar vasoconstriction.
Uncomplicated vascular immune complex deposits consist of a deposition of immunoglobulins and complement primarily in afferent arterioles.
The walls of afferent arterioles were effaced by smudgy eosinophilic material that severely narrowed the vessel lumens, and nuclear pyknosis and karyorrhexis were seen within the altered arteriolar walls (Figure 1).
Rolofylline increases renal blood flow and urine production by blocking adenosine-mediated vasoconstriction of the afferent arterioles
of the kidneys and inhibiting salt and water reabsorption by the kidney.