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Extracellular Glucose Depletion as an Indirect Measure of Glucose Uptake in Cells and Tissues Ex Vivo
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Cellular glucose transport and glucotransporter 4 expression as a therapeutic target: clinical and experimental

Anna Czech1, Paweł Piatkiewicz, Jan Tatoń

  • 1Chair and Department of Internal Medicine, and Diabetology, Warsaw Medical University (Brodnowski Hospital), Warsaw, Poland.

Archivum Immunologiae Et Therapiae Experimentalis
|November 4, 2009
PubMed
Abstract

Insights

Sulfonylurea therapy significantly improved cellular glucose transport (CGT) in type 2 diabetes mellitus (T2DM) patients. This enhancement normalized glucose transporter 4 (GLUT4) expression, suggesting CGT as a therapeutic target.

Area of Science:

  • Metabolic research
  • Diabetes mellitus treatment
  • Cellular physiology

Background:

  • Cellular glucose assimilation is key for type 2 diabetes mellitus (T2DM) metabolic therapy.
  • Cellular glucose transport (CGT) levels are potential therapeutic targets for oral hypoglycemic drugs.
  • Investigating CGT levels before and after sulfonylurea therapy in T2DM.

Purpose of the Study:

  • To determine if CGT levels can be a therapeutic target in T2DM.
  • To assess the impact of sulfonylurea therapy on CGT.
  • To evaluate changes in GLUT4 expression following sulfonylurea treatment.

Main Methods:

  • Assessed CGT using in vitro tests with 2-[(3)H(G)] glucose on peripheral blood lymphocytes.
  • Incubation tests performed under basal conditions and with sulfonylurea +/- insulin.
  • Assessed GLUT4 expression via flow cytometry before and after 3 months of sulfonylurea therapy in T2DM patients.

Main Results:

  • Baseline CGT was significantly lower in T2DM patients compared to controls.
  • Sulfonylurea moderately increased CGT in T2DM lymphocytes.
  • Insulin augmented the sulfonylurea-induced increase in CGT.

Conclusions:

  • Three-month sulfonylurea therapy significantly increased CGT in T2DM patients.
  • The observed improvement in CGT correlated with near-normal GLUT4 expression.
  • These findings support CGT as a viable therapeutic target in T2DM management.

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