Secondary regulatory sites in rat liver cholesterol biosynthesis: Role of 5-pyrophosphomevalonate decarboxylase

Lipids ◽  
1980 ◽  
Vol 15 (3) ◽  
pp. 196-199 ◽  
Author(s):  
Ana María Jabalquinto ◽  
Emilio Cardemil
Keyword(s):  
Rat Liver ◽  
Cholesterol Biosynthesis ◽  
Liver Cholesterol ◽  
Regulatory Sites

scholarly journals Abnormal brain cholesterol homeostasis in Alzheimer’s disease—a targeted metabolomic and transcriptomic study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Vijay R. Varma ◽  
H. Büşra Lüleci ◽  
Anup M. Oommen ◽  
Sudhir Varma ◽  
Chad T. Blackshear ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Brain Tissue ◽  
Cholesterol Metabolism ◽  
Cholesterol Biosynthesis ◽  
Cholesterol Homeostasis ◽  
Transcriptomic Data ◽  
Brain Cholesterol ◽  
Cholesterol Levels

AbstractThe role of brain cholesterol metabolism in Alzheimer’s disease (AD) remains unclear. Peripheral and brain cholesterol levels are largely independent due to the impermeability of the blood brain barrier (BBB), highlighting the importance of studying the role of brain cholesterol homeostasis in AD. We first tested whether metabolite markers of brain cholesterol biosynthesis and catabolism were altered in AD and associated with AD pathology using linear mixed-effects models in two brain autopsy samples from the Baltimore Longitudinal Study of Aging (BLSA) and the Religious Orders Study (ROS). We next tested whether genetic regulators of brain cholesterol biosynthesis and catabolism were altered in AD using the ANOVA test in publicly available brain tissue transcriptomic datasets. Finally, using regional brain transcriptomic data, we performed genome-scale metabolic network modeling to assess alterations in cholesterol biosynthesis and catabolism reactions in AD. We show that AD is associated with pervasive abnormalities in cholesterol biosynthesis and catabolism. Using transcriptomic data from Parkinson’s disease (PD) brain tissue samples, we found that gene expression alterations identified in AD were not observed in PD, suggesting that these changes may be specific to AD. Our results suggest that reduced de novo cholesterol biosynthesis may occur in response to impaired enzymatic cholesterol catabolism and efflux to maintain brain cholesterol levels in AD. This is accompanied by the accumulation of nonenzymatically generated cytotoxic oxysterols. Our results set the stage for experimental studies to address whether abnormalities in cholesterol metabolism are plausible therapeutic targets in AD.

Role of nitric oxide in hepatic and pulmonary injury following ischemia-reperfusion of rat liver

2003 ◽  
Vol 124 (4) ◽  
pp. A719-A720
Author(s):  
Yuji Takamatsu ◽  
Kazuo Shimada ◽  
Koji Yamaguchi ◽  
Kazuo Chijiiwa ◽  
Masao Tanaka
Keyword(s):  
Nitric Oxide ◽  
Rat Liver ◽  
Ischemia Reperfusion ◽  
Pulmonary Injury

scholarly journals Role of hepatic lipase in the uptake and processing of chylomicron remnants in rat liver.

1994 ◽  
Vol 35 (4) ◽  
pp. 709-720
Author(s):  
S Shafi ◽  
S E Brady ◽  
A Bensadoun ◽  
R J Havel
Keyword(s):  
Rat Liver ◽  
Hepatic Lipase ◽  
Chylomicron Remnants

scholarly journals Role of calcium as an inhibitor of rat liver carbamylphosphate synthetase I.

1984 ◽  
Vol 259 (1) ◽  
pp. 323-331 ◽  
Author(s):  
S Cerdan ◽  
C J Lusty ◽  
K N Davis ◽  
J A Jacobsohn ◽  
J R Williamson
Keyword(s):  
Rat Liver ◽  
Carbamylphosphate Synthetase
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