Much like a dam operator controls water flow into a river, a mechanosensor, likely located inside the smooth muscle cells that form the blood vessel walls, keeps tabs on the pressure of the blood flowing through the afferent arteriolar
into the filters.
Among the mechanisms of increase in PAR the expression of angiotensin converting enzyme has been reported to be increased in pulmonary arteries of PAH patients (2, 3) with a functional predominance at the site of arteriolar
In 2 of the patients, no arteries were seen in the biopsy tissue (but 1 had severe arteriolar
hyaline) and in 3 patients arterial thickening and narrowing were not present.
In addition, the shunts promote an increase in portal venous inflow secondary to splanchnic arteriolar
Melatonin is connected with dementia in that it induces alterations in the cerebral arteriolar
wall during the aging process.
Close monitoring for progression of renal failure should be done with the initiation of ACE inhibitors, as it is possible for ACE inhibitors to induce a fall in efferent arteriolar
resistance and increased intraglomerular pressure.
More patients will need to be studied to determine whether the retinal lesions found in these "prediabetic" individuals represent early diabetic changes or perhaps are more indicative of arteriolar
changes in people who are at risk for atherosclerotic vascular disease in general.
For each challenge, BW, indices of cerebrovascular reserve, cere bral perfusion pressure (CPP), and pial arteriolar
diameter were determined.
Because this mild degree of epicardial coronary artery constriction should not affect coronary blood flow, this suggests that in the normal coronary circulation, nitric oxide contributes to both basal epicardial and arteriolar
Histological changes of BD (demyelination, axonal loss and thickening of the arteriolar
walls) were present in all patients with LA on CT.
damage occurs characteristically in the lenticulostriate arteries of the middle cerebral artery and the posterior cerebral artery, the penetrating branches of the basilar artery, and the central cerebellar artery.
also showed that eyes with open-angle glaucoma had a significantly narrower retinal arteriolar
diameter than did normal eyes .