Related Experiment Video
Updated: Aug 18, 2026

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
Published on: December 7, 2017
The mechanism of chlorothiazide-induced carbohydrate intolerance
Abstract:
In order to establish the mechanism(s) of chlorothiazide-induced hyperglycemia, measurements of blood glucose, plasma insulin, liver glycogen and hepatic cyclic adenosine 3':5'-monophosphate (cyclic AMP) levels, and liver phosphodiesterase activity were made in rats administered 10, 25, 50 or 100 mg/kg of the drug. Comparison of data obtained on these animals with those from controls revealed significant and dose-dependent increases in blood glucose, decreases in liver glycogen, increases in hepatic cyclic AMP and inhibition of phosphodiesterase. Although basal insulin levels were significantly increased at the two higher doses of chlorothiazide, ratios of blood glucose/plasma insulin levels showed suppression of insulin secretion at all four doses. However, this suppression was not dose-related. All effects of the drug were maximal at 2 hours after subcutaneous administration. The results of this investigation indicate that the primary mechanism of chlorothiazide-induced carbohydrate intolerance is cyclic AMP-mediated stimulation of glycogenolysis and inhibition of glycogenesis. Suppression of insulin secretion is secondary but probably contributes to the hyperglycemia.
More Related Videos
Related Concept Videos
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Glucose Absorption Into the Small Intestine
Antihypertensive Drugs: Thiazide-Class Diuretics
Overview of Carbohydrate Metabolism
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Carbohydrate Absorption
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
Oral Hypoglycemic Agents: Biguanides and Glitazones

