BACKGROUND: Prediabetic glucose homeostasis alterations are important cardiovascular risk factors but their role in renal transplant recipients (RTR) has not been established. METHODS: In 172 RTRs without pretransplant or de novo diabetes, we measured carotid intima media thickness (c-IMT) and performed an oral glucose tolerance test (OGTT). RESULTS: In multivariate analysis, age, hypertension and male sex were independently associated with a c-IMT in the third tertile. A significant interaction between gender and glucose homeostasis parameters was observed. Among male RTR, those with a c-IMT in the third tertile showed significantly higher plasma glucose and HbA1c levels (5+/-0.5% vs. 5.1+/-0.5% vs. 5.5+/-0.4%; P<0.01 tertile 3 vs. 2 or 1) than those in other tertiles. Insulin action parameters were not significantly different. The odds ratio of being in the higher c-IMT tertile was 2.9 (95% CI: 1.05-8.1) per each 1% increase of HbA1c. By contrast, glucose and HbA1c levels were not significantly different between c-IMT tertiles in female RTR. However, age-adjusted insulin levels after OGTT were higher (86+/-10 vs. 51.7+/-9.4; P=0.02) and the insulin sensitivity index lower (0.8+/-0.3 vs. 0.048+/-0.03; P=0.04) among females in the third tertile as compared to the first one. CONCLUSION: Prediabetic glucose homeostasis alterations in RTRs are related to carotid atherosclerosis, although there may be gender differences in the underlying alteration.
BACKGROUND:Prediabetic glucose homeostasis alterations are important cardiovascular risk factors but their role in renal transplant recipients (RTR) has not been established. METHODS: In 172 RTRs without pretransplant or de novo diabetes, we measured carotid intima media thickness (c-IMT) and performed an oral glucose tolerance test (OGTT). RESULTS: In multivariate analysis, age, hypertension and male sex were independently associated with a c-IMT in the third tertile. A significant interaction between gender and glucose homeostasis parameters was observed. Among male RTR, those with a c-IMT in the third tertile showed significantly higher plasma glucose and HbA1c levels (5+/-0.5% vs. 5.1+/-0.5% vs. 5.5+/-0.4%; P<0.01 tertile 3 vs. 2 or 1) than those in other tertiles. Insulin action parameters were not significantly different. The odds ratio of being in the higher c-IMT tertile was 2.9 (95% CI: 1.05-8.1) per each 1% increase of HbA1c. By contrast, glucose and HbA1c levels were not significantly different between c-IMT tertiles in female RTR. However, age-adjusted insulin levels after OGTT were higher (86+/-10 vs. 51.7+/-9.4; P=0.02) and the insulin sensitivity index lower (0.8+/-0.3 vs. 0.048+/-0.03; P=0.04) among females in the third tertile as compared to the first one. CONCLUSION:Prediabetic glucose homeostasis alterations in RTRs are related to carotid atherosclerosis, although there may be gender differences in the underlying alteration.
Authors: Patricia Delgado; Juan Manuel Diaz; Irene Silva; José M Osorio; Antonio Osuna; Beatriz Bayés; Ricardo Lauzurica; Edgar Arellano; Jose Maria Campistol; Rosa Dominguez; Carlos Gómez-Alamillo; Meritxell Ibernon; Francisco Moreso; Rocio Benitez; Ildefonso Lampreave; Esteban Porrini; Armando Torres Journal: Clin J Am Soc Nephrol Date: 2008-03-05 Impact factor: 8.237