PMID- 19033682 OWN - NLM STAT- MEDLINE DCOM- 20090417 LR - 20131121 IS - 1421-9697 (Electronic) IS - 0250-6807 (Linking) VI - 53 IP - 3-4 DP - 2008 TI - Effect of vanadium on insulin sensitivity in patients with impaired glucose tolerance. PG - 195-8 LID - 10.1159/000175844 [doi] AB - BACKGROUND/AIM: Impaired glucose tolerance (IGT) is considered a risk factor for developing type 2 diabetes mellitus (T2DM) and is associated with insulin resistance. Vanadium seems to block protein tyrosine phosphatase with the consequent increment in insulin sensitivity (INS) in T2DM patients, but this effect has not been studied in IGT patients. The aim of this study was to evaluate the effect of vanadium on INS in IGT patients. METHODS: A randomized, double-blind, placebo-controlled clinical trial was carried out in 14 overweight/obese patients with IGT. Intervention consisted of vanadyl sulfate (VS, 50 mg p.o. twice daily) or placebo for 4 weeks. Before and after the intervention, a metabolic profile was performed and INS was assessed using the euglycemic-hyperinsulinemic clamp technique. Mann-Whitney U and Wilcoxon rank tests were used for statistical analyses. RESULTS: There were no significant differences in basal characteristics between groups. VS did not affect INS [2.7+/-0.8 vs. 2.9+/-0.9 mg/(kg/min), p=0.735] but increased triglyceride levels (1.35+/-0.61 vs. 1.70+/-0.46 mmol/l, p=0.018). CONCLUSIONS: VS administration in IGT patients increased triglyceride concentrations without changes in INS. CI - Copyright 2008 S. Karger AG, Basel. FAU - Jacques-Camarena, Omar AU - Jacques-Camarena O AD - Medical Research Unit in Clinical Epidemiology, Medical Unit of High Specialty, West National Medical Center, Mexican Institute of Social Security, Guadalajara, Mexico. FAU - Gonzalez-Ortiz, Manuel AU - Gonzalez-Ortiz M FAU - Martinez-Abundis, Esperanza AU - Martinez-Abundis E FAU - Lopez-Madrueno, J F Pariz AU - Lopez-Madrueno JF FAU - Medina-Santillan, Roberto AU - Medina-Santillan R LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20081122 PL - Switzerland TA - Ann Nutr Metab JT - Annals of nutrition & metabolism JID - 8105511 RN - 0 (Blood Glucose) RN - 0 (Insulin) RN - 0 (Trace Elements) RN - 0 (Triglycerides) RN - 00J9J9XKDE (Vanadium) SB - IM MH - Adult MH - Blood Glucose/*metabolism MH - Double-Blind Method MH - Female MH - Glucose Clamp Technique MH - Glucose Intolerance/blood/*drug therapy MH - Glucose Tolerance Test MH - Humans MH - Insulin/*blood MH - Insulin Resistance MH - Male MH - Middle Aged MH - Statistics, Nonparametric MH - Trace Elements/pharmacology MH - Treatment Outcome MH - Triglycerides/blood MH - Vanadium/*pharmacology EDAT- 2008/11/27 09:00 MHDA- 2009/04/18 09:00 CRDT- 2008/11/27 09:00 PHST- 2008/03/28 00:00 [received] PHST- 2008/09/11 00:00 [accepted] PHST- 2008/11/27 09:00 [pubmed] PHST- 2009/04/18 09:00 [medline] PHST- 2008/11/27 09:00 [entrez] AID - 000175844 [pii] AID - 10.1159/000175844 [doi] PST - ppublish SO - Ann Nutr Metab. 2008;53(3-4):195-8. doi: 10.1159/000175844. Epub 2008 Nov 22.