<b>Can renin activate inactive human plasma renin </b><b>? </b>
نویسندگان
چکیده
منابع مشابه
Activation and reinactivation of inactive renin in normal human plasma.
Various facets of activation of inactive renin by acidification or cold exposure were investigated in normal human plasma. The acid activation obtained by titration was usually less than that by dialysis method, but varied from 41% to 122% of the latter. The acid phase of acid activation accounted for about 70% of the total activation achieved by the combined effects of the acid and alkaline ph...
متن کاملInactive Renin of High Molecular Weight (Big Renin) in Normal Human Plasma
Normal plasma contains inactive renin, which becomes active when plasma is dialyzed to pH 3.3 and to pH 7.5, or treated with pepsin or trypsin. Under optimal conditions, each of these procedures activated the same quantity of renin, which was not further increased by repeating or combining two procedures, thus suggesting that the same pool of inactive renin was activated by each procedure. When...
متن کاملCharacterization of inactive renin from human kidney and plasma. Evidence of a renal source of circulating inactive renin.
An inactive form of renin has been isolated from human plasma. It has been suggested that this may represent renin precursor secreted from the kidney. However, early studies failed to isolate inactive renin from human renal tissue. In this investigation, rapid processing of human kidney cortex at temperatures below 4 degrees C in the presence of protease inhibitors followed by cibacron-blue aff...
متن کاملKinetic comparisons of amniotic fluid inactive renin and renal renin using synthetic and human renin substrates.
Inactive renin has been isolated from pooled amniotic fluid and purified approximately 642-fold. Prior to activation the isolates had approximately 4% of the activity found after activation. The observation is similar to that reported for inactive renin from chorionic cell culture and suggests a placental origin of amniotic fluid inactive renin. Using plasma from an estrogen-treated woman, reni...
متن کاملActivation of inactive plasma renin by plasma and tissue kallikreins.
1. Normal human plasma contains a proactivator of inactive renin. The pro-activator is activated at physiological pH in plasma that has been pretreated with acid. This activation in vitro leads to the conversion of inactive renin into the active form with simultaneous generation of kallikrein activity. 2. The endogenous activator of inactive renin has the same pH profile and inhibitor spectrum ...
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ژورنال
عنوان ژورنال: Biomedical Research
سال: 1982
ISSN: 0388-6107,1880-313X
DOI: 10.2220/biomedres.3.219