renin-angiotensin system

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re·nin-an·gi·o·ten·sin sys·tem

a selective regulator of the aldosterone biosynthetic pathway that acts by increasing aldosterone production and sodium retention as a result of volume depletion, with resulting increased renin production in the kidney and conversion of angiotensin I in the plasma to angiotensin II.

renin-angiotensin system

the regulation of sodium balance, fluid volume, and blood pressure. In response to reduced perfusion, renin is secreted, which hydrolyzes a plasma globulin to release angiotensin I, which is rapidly hydrolyzed to angiotensin II, a powerful vasoconstrictor; angiotension II also stimulates aldosterone secretion, which causes sodium retention, an increase in blood pressure, and restoration of renal perfusion, which shuts off the signal for renin release (negative feedback). Angiotensin-converting enzyme also deactivates bradykinin, a vasodilator. Also called renin-angiotensin-aldosterone system.
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Renin-angiotensin system

re·nin-an·gi·o·ten·sin sys·tem

(RAS) (rē'nin-an-jē-ō-tensin sistĕm)
Selective regulator of the aldosterone biosynthetic pathway that acts by increasing aldosterone production and sodium retention due to volume depletion.

renin

a proteolytic enzyme synthesized, stored and secreted by the juxtaglomerular cells of the kidney; it plays a role in regulation of blood pressure by catalyzing the conversion of the plasma glycoprotein angiotensinogen to angiotensin I. This, in turn, is converted to angiotensin II by an enzyme that is present in relatively high concentrations in the lung. Angiotensin II is one of the most potent vasoconstrictors known, and also is a powerful stimulus of aldosterone secretion.

renin-angiotensin system
renin, secreted by the juxtaglomerular apparatus, activates the precursor angiotensinogen. This liberates angiotensin I, then angiotensin II, a vasoconstrictor and stimulant to the secretion of aldosterone.
big renin
a relatively inactive protein with a higher molecular weight than normal renin, which is activated after exposure to low pH or to proteolytic enzymes.
References in periodicals archive ?
Director General of Aquaculture, Slamet Soebjakto, interrupted by Minister Susi, explained that RAS system advantages compared with conventional system, this system is able to produce a much higher productivity, where the density of tilapia can boost up to 5,000 head / m3, while solid spreading on conventional system only reach 50 tail / m2.
Effects due to interfering with RAS system such as hypotension and hyperkalemia are usually dose related and can be ameliorated by slow dose titration and decreasing doses or discontinuation.
Using the MultiMax option, you can also work with defined groups of RAS systems.
For example, in one application alone we were able to quickly move from our old legacy system to the new system - saving over $10,000 in one time conversion costs by mining accounts receivable information from our old AS400 platform directly to the RAS system prior to transitioning to our new AS400 hardware - with all of the data that we needed intact and easily accessible.
Similarly the RAS system is also split and operated as two separate systems.
Tenders are invited for Construction Of Platform Drainage System And Roof For Putting The Ras System Under Nfdb Indicus Project At Muttukadu Experimental Station Of Ciba At Muttukadu Chennai
For the present time, a 5th pump that would be used as an on the-shelf stand-by unit would provide the additional redundancy and flexibility to the RAS system is strongly recommended.
And once installed, standard NT Server RRAS facilities make it easy for managers to administer their RAS system from anywhere on the LAN.
To the risk of failure to keep the conversion effort and training costs minimal, the new server system 100% must be compatible with the existing infrastructure (especially in the Parallel Sysplex with IBM z196, EMC DCX4-S SAN Directors, Cisco Catalysts 6500, RAS system of the company , etc.
To the risk of failure to keep the conversion costs and training costs minimal, the new server system 100% must be compatible with the existing infrastructure (especially in the Parallel Sysplex with IBM z196, EMC DCX4-S SAN Directors, Cisco Catalysts 6500, RAS system from , etc.
The Assured Access Broadband RAS system can be placed in a carrier's central office, a CLEC co-location site, or metro area office, an NSP's mega-POP, as well as an Internet Service Providers' POP.
Ascend's product is one of the few, in grueling lab tests that met or exceeded the reliability and performance of any other RAS system tested.