نتایج جستجو برای: hexosamine pathway
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Diabetes-related morbidity and mortality is evident in the increased prevalence of cardiovascular diseases and the high-risk of heart failure. Diabetic cardiomyopathy is a well-known complication of diabetes, and is defined as a ventricular dysfunction independent of coronary heart diseases and hypertension. The Framingham study firmly established an epidemiological link between diabetes and he...
The number of N-glycans (n) is a distinct feature of each glycoprotein sequence and cooperates with the physical properties of the Golgi N-glycan-branching pathway to regulate surface glycoprotein levels. The Golgi pathway is ultrasensitive to hexosamine flux for the production of tri- and tetra-antennary N-glycans, which bind to galectins and form a molecular lattice that opposes glycoprotein ...
Rapidly proliferating cells switch from oxidative phosphorylation to aerobic glycolysis plus glutaminolysis, markedly increasing glucose and glutamine catabolism. Although Otto Warburg first described aerobic glycolysis in cancer cells >90 years ago, the primary purpose of this metabolic switch remains controversial. The hexosamine biosynthetic pathway requires glucose and glutamine for de novo...
The environment that the oocyte is exposed to during the peri-conception period can have a significant impact on oocyte developmental competence (the ability of the oocyte to support fertilisation and subsequent embryo development) and the long-term health of the resulting offspring. This is particularly true for maternal hyperglycaemia. While maternal hyperglycaemia during early pregnancy thro...
Aging entails a progressive decline in protein homeostasis, which often leads to age-related diseases. The endoplasmic reticulum (ER) is the site of protein synthesis and maturation for secreted and membrane proteins. Correct folding of ER proteins requires covalent attachment of N-linked glycan oligosaccharides. Here, we report that increased synthesis of N-glycan precursors in the hexosamine ...
The hexosamine biosynthesis pathway (HBP) serves as a nutrient sensor and has been implicated in the development of type 2 diabetes. We previously demonstrated that fatty acid oxidation was enhanced in transgenic mouse adipocytes, wherein the rate-limiting enzyme of the HBP, glutamine:fructose-6-phosphate amidotransferase (GFA), was overexpressed. To explore the molecular mechanism of the HBP-i...
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