hepatic clearance

hepatic clearance

Therapeutics The hypothetical calculation of the volume of distribution in liters of unmetabolized drug cleared through the liver in 1 min–L/min. See Clearance.
References in periodicals archive ?
These substances reach systemic circulation as a result of portal-systemic shunting or reduced hepatic clearance and produce deleterious effects on brain function (4).
It has been shown in a number of studies that the accumulation and clearance of cardiac iron in patients with TDT is slower than the hepatic clearance. (13) Soltanpour et al,12 emphasize the importance of cardiac T2*MRI in the assessment of iron overload in patients with TDT.
The compensatory mechanism known as hepatic artery buffer response (HABR) which leads to an increase in the hepatic arterial blood flow in circumstances where the portal flow is reduced, allowing by that a partially maintained hepatic blood flow and subsequently adequate hepatic clearance and oxygen supply [22], could state for the relative good tolerance by the liver of decreased hepatic blood flow induced by the closed abdominal procedure for HIPEC.
Uptake hepatic clearance [CL.sub.uptake,in vivo] was calculated by integration plots obtained applying the Patlak method in Pmod (Pmod Technologies, CH) version 3.2, limiting the linear fit to the uptake phase (0-3 min) [3,12].
And the occurrence of bacterial infection is usually thought to be caused by systemic translocation of microbes from gut-derived organisms, impaired hepatic clearance mechanisms, and an ability of circulating immune cells to combat infectious cues [11, 13].
The binding of chylomicron remnants to LRP1 is mediated by apoE and further enhanced by LPL [37], which remains attached to triglyceride-rich lipoproteins (TRLs) following lipolysis and facilitates hepatic clearance from the circulation [38].
Exact pathogenic mechanism involved is unknown till date, however the basic processes are failure of hepatic clearance of gut derived substances such as ammonia, free fatty acids, mercaptans etc., either through hepatocellular failure or shunting, and altered amino acid metabolism, both of which result in changes in cerebral transmission causing depressed cerebral function.
The serum markers of fibrosis can be affected by disturbed metabolism as they are the end products of synthesis or breakdown of extracellular matrix and may represent impaired hepatic clearance. Hence coexisting pathologies and altered blood parameters not related to CLD must be taken into account.7 There can also be analytic variability due to laboratory skills.
Aging liver exhibits metabolic alteration, slower hepatic clearance [1], fibrosis [2], reduced blood flow, and perfusion [3].
When considering hepatic clearing effects, hepatic clearance of sorbitol was similar before and after HD [4].
Drugs that are particularly affected are those with a high hepatic clearance and high first-pass metabolism.
The findings, reported at the annual Digestive Disease Week, should help allay fears that decreased hepatic clearance of statins could lead to complications in patients with advanced liver disease, as was previously hypothesized, said lead investigator Dr.