Organization of hepatic nitrogen metabolism and its relation to acid-base homeostasis
Organization of hepatic nitrogen metabolism and its relation to acid-base homeostasis
复制标题
肝脏氮代谢的组织及其与酸碱稳态的关系
DOI:
10.1007/bf01798059
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发表时间:
1990
期刊:
影响因子:
--
通讯作者:
D. Häussinger
中科院分区:
文献类型:
--
作者:
D. Häussinger
SummaryHepatic and renal nitrogen metabolism are linked by an interorgan glutamine flux, coupling both renal ammoniagenesis and hepatic ureogenesis to systemic acid base regulation. This is because protein breakdown produces equimolar amounts of NH4+ and HCO3−. A hepatic role in this interorgan team effort is based upon the tissuespecific presence of urea synthesis, which represents a major irreversible pathway for removal of metabolically generated bicarbonate. A sensitive and complex control of bicarbonate disposal via ureogenesis by the extracellular acid-base status creates a feed-back control loop between the acidbase status and the rate of bicarbonate elimination. This bicarbonate-homeostatic mechanism operates without threat of hyperammonemia, because a sophisticated structural and functional organisation of ammonia-metabolizing pathways in the liver acinus uncouples urea synthesis from the vital need to eliminate potentially toxic ammonia.
DOI:
10.1042/bj2670265
发表时间:
1990
期刊:
The Biochemical journal
影响因子:
--
作者:
Watford,M;Smith,EM
通讯作者:
Smith,EM
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Cooper,AJ;Nieves,E;Coleman,AE;Filc-DeRicco,S;Gelbard,AS
通讯作者:
Gelbard,AS