1. Angiotensin I1 together with any immunoreactive fragments of angiotensin were measured in arterial and venous plasma before and during infusion of angiotensin I1 amide in five normotensive subjects, both in sodium-replete and sodium-depleted states. Because the antibody used in the radioimmunoassay cross-reacted with larger angiotensin breakdown products and because these fragments are prese...

In the rat, angiotensin II receptors of the adrenal glomerulosa and smooth muscle undergo reciprocal regulatory changes that parallel the changes in target cell sensitivity to angiotensin II during altered sodium intake. In primates, the relative importance of angiotensin II receptor regulation during sodium-induced changes in angiotensin II sensitivity is not clear. To evaluate the role of ang...

We examined the angiotensin-induced potentiation of noradrenergic transmission in the isolated mesenteric arteries of one-kidney, one clip (1K1C) hypertensive rats. The angiotensin converting enzyme activity measured in plasma did not change during the development of hypertension, whereas the activity measured in the aortic tissue was significantly augmented 28 days after the renal artery was c...

Coronaviruses (CoVs) are a group of viruses that induce infection in the respiratory and other systems in the human body. There are two coronaviruses that transmitted from animals to humans including severe acute respiratory syndrome (SARS) and the Middle East respiratory syndrome (MERS) (1). The novel coronavirus that appeared at first in Wuhan, China, in December 2019 was named as severe acut...

The effect of l-Asn-8-Ak-angiotensin II (Asn-Arg-Val-Tyr-Val-His-Pro-Ala) on the vascular action of angiotensin II was studied with rabbit aortic strips, pithed rats, and conscious rats. Dose-response (contraction) curves for angiotensin II on rabbit aortic strips shifted progressively to the right with increasing bath concentrations of l-Asn-8-Ala-angiotensin II. The pA2 value (an indication o...

A low expression of angiotensinogen in the heart has been construed as indicating a circulating uptake mechanism to explain the local effects of angiotensin II on tissues. The recent identification of angiotensin-(1-12) in an array of rat organs suggests this propeptide may be an alternate substrate for local angiotensin production. To test this hypothesis, tissues from 11-wk-old spontaneously ...

The novel coronavirus infection, COVID-19, is a highly contagious viral disease associated with acute, severe respiratory syndrome, which based on the development of pronounced thrombo-inflammatory syndrome. As number patients COVID-19 increased, heart damage has been reported, especially in and critical COVID-19. This review describes role angiotensin-converting enzyme 2 receptor regulation en...

(Pro)renin receptor (PRR) is the recently discovered component of renin-angiotensin-aldosterone system (RAS). Many organs contain their own RAS, wherein PRR can exert organ-specific localized effects. The Binding prorenin/renin to activates angiotensin-dependent and independent pathways which leads development physiological pathological Continued progress in research suggests that upregulation ...

Angiotensin II regulates many aspects of renal function and thereby influences long-term blood pressure. The effects of angiotensin II on the kidney have been exhaustively studied; however, the converse (i.e., effects of the kidney on angiotensin II) has received little attention. Accordingly, the focus of this study was to determine whether renal degradation of angiotensin II is regulated by c...

We measured the concentrations of three principal products of the renin-angiotensin system and seven of their metabolites in the plasma of anesthetized normal dogs and in dogs 24 hours after bilateral nephrectomy. The levels of the angiotensin peptides were measured by highperformance liquid chromatography combined with radioimmunoassay using three specific antibodies that recognized different ...