نتایج جستجو برای: amp activated protein kinase
تعداد نتایج: 1505784 فیلتر نتایج به سال:
Sitagliptin, a selective dipeptidyl peptidase 4 inhibitor, inhibits the inactivation and degradation of glucagon like peptide 1 (GLP-1), which is used for the treatment of type 2 diabetes mellitus. However, little is known about the role of GLP-1 in hypertension. This study investigated whether the activation of GLP-1 signaling protects endothelial function in hypertension. Two-week sitagliptin...
The AMP-activated protein kinase (AMPK) cascade is activated by an increase in the AMP/ATP ratio within the cell. AMPK is regulated allosterically by AMP and by reversible phosphorylation. Threonine-172 within the catalytic subunit (alpha) of AMPK (Thr(172)) was identified as the major site phosphorylated by the AMP-activated protein kinase kinase (AMPKK) in vitro. We have used site-directed mu...
AMP-activated protein kinase (AMP-PK) is a multi substrate kinase with an important role in the regulation of mammalian lipid metabolism. The enzymes that regulate fatty acid and cholestrol biosynthesis are acetyl-CoA carboxylase and 3hydroxymethylglutaryl-CoA reductase, respectively. Hormonal regulation of each is achieved through their phosphorylation and inactivation by AMP-PK. Like many oth...
Malonyl-CoA, an inhibitor of fatty acid oxidation in skeletal muscle mitochondria, decreases in rat skeletal muscle during exercise or in response to electrical stimulation. Regulation of rat skeletal muscle acetyl-CoA carboxylase (ACC), the enzyme that synthesizes malonyl-CoA, was studied in vitro and in vivo. Avidin-Sepharose affinity-purified ACC from hindlimb skeletal muscle was phosphoryla...
BACKGROUND Genetic studies of Saccharomyces cerevisiae have shown that Snf1p and Snf4p, which together form the SNF1 complex, are essential for gene derepression on removal of glucose from the medium. However the metabolic signal(s) involved, and the exact role of SNF1, have remained enigmatic. Recently, the AMP-activated protein kinase (AMPK) was shown to be the mammalian homologue of SNF1. AM...
diabetic retinopathy is the lead among causes of blindness in north america. glucose-induced endothelial injury is the most important cause of diabetic retinopathy and other vascular complications. extracellular signal-regulated kinase 5 (erk5), also known as big mitogen-activated protein kinase 1 (bmk1), is a member of mitogen-activated protein kinases (mapk) family. physiologically, it is cri...
AMP-activated protein kinase (AMPK) is emerging as an important energy-sensing/signaling system in skeletal muscle. This kinase is activated allosterically by 5'-AMP and inhibited allosterically by creatine phosphate. Phosphorylation of AMPK by an upstream kinase, AMPK kinase (also activated allosterically by 5'-AMP), results in activation. It is activated in both rat and human muscle in respon...
Ion channels underlying the electrical activity of neurons can be regulated by neurotransmitters via two basic mechanisms: ligand binding and covalent modification. Whereas neurotransmitters often act by binding directly to ion channels, the intracellular messenger cyclic AMP is thought usually to act indirectly, by activating protein kinase A, which in turn can phosphorylate channel proteins. ...
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