Home / 2018 (page 27)

Yearly Archives: 2018

International Textbook of Diabetes Mellitus, 4th Ed., Excerpt #148: Glucose Toxicity Part 4

The hexosamine/O-linked N-acetyl glucosamine pathway: One metabolic fate of glucose is the hexosamine biosynthetic pathway (HBP), and high flux through this pathway, such as occurs in diabetes or overnutrition, has been convincingly linked to insulin resistance and beta-cell failure. In this pathway a relatively small fraction of cellular glucose flux—a few percent in most tissues—is converted to UDP-N-acetylglucosamine (UDP-GlcNAc) and other amino sugars. The rate limiting step is catalyzed by the enzyme glutamine: fructose-6-phosphate amidotransferase (GFA) that catalyzes the synthesis of glucosamine-6-P from fructose-6-P and glutamine.

Read More »