The mechanism of enzyme action.

The mechanism of enzyme action.

Mechanism of Action of the Thyroid Hormone on the Heart

SUMMARY  The foliowing cardiac effects may be at­tributed to thyroxin:  1-Thyroxin augments all anaerobic pro­cesses in the body includ::ng the heart, and decreases the glycogen content of the heart ( 1, 2, 5, 27). The resistance of the heart to anoxia is increased in hyperthyroidism ( 25). 2- Thyroxin influences the cardiac weight and prevents cardiac atrophy (3, 8, 10, 11, 19, 20, 21, 30...

Mechanism of amylopectin formation by the action of Q enzyme.

It has been previously demonstrated that linear amylose can be transformed with the Q enzyme from potatoes to a branched polysaccharide possessing the chemical and biochemical properties of amylopectin (l-3). A mechanism for its synthesis was first suggested by Bourne and Peat (4) in 1945. They postulated that glucose-l-phosphate is built up by phosphorylase to an unbranched chain, “pseudoamylo...

Antibacterial Activity of Polypyrrole-Chitosan Nanocomposite: Mechanism of Action

Polypyrrole-chitosan nanocomposite (PPy-CTN) was synthesized by dispersion polymerization of PPy in presence of CTN. Preparation of spherical PPy nanoparticles that were successfully covered with a thin layer of chitosan was confirm by transmission electron microscopy (TEM) technique. Characterization techniques also revealed the presence of CNT in the polymer matrix and its presence was confir...

Diabetes and Oxidative Stress: The Mechanism and Action

Abstract Diabetes mellitus is one of the major metabolic disorders. Diabetes is recognized for severe complications including diabetic nephropathy, neuropathy and retinopathy. Long-lasting effect of hyperglycemia results in increased oxidative stress. Oxidative stress results from an imbalance between radical-generating and radical scavenging systems. Increased oxidative stress has been shown ...