Is UCP2 Gene Polymorphism Associated With Decreased Resting Energy Expenditure in Nondialyzed Chronic Kidney Disease Patients?

Is UCP2 Gene Polymorphism Associated With Decreased Resting Energy Expenditure in Nondialyzed Chronic Kidney Disease Patients?

Author Avesani, Carla Maria Autor UNIFESP Google Scholar
Kamimura, Maria Ayako Autor UNIFESP Google Scholar
Uraka, Simone Autor UNIFESP Google Scholar
Pecoits-Filho, Roberto Google Scholar
Nordfors, Louise Google Scholar
Stenvinkel, Peter Google Scholar
Lindholm, Bengt Google Scholar
Draibe, Sergio Antonio Autor UNIFESP Google Scholar
Cuppari, Lilian Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Karolinska Inst
Pontificia Univ Catolica Parana
Abstract Objective: the deletion/deletion (del/del) polymorphism of uncoupling protein 2 (UCP2) was associated with decreased energy expenditure in diabetic and obese patients. There is evidence of decreased resting energy expenditure (REE) in chronic kidney disease (CKD) patients not yet on dialysis. However, whether REE is associated with the UCP2 polymorphism was not previously investigated in this population. This study evaluated whether the del/del polymorphism of the UCP2 gene is associated with lower REE in nondialyzed CKD patients.Design: This was a cross-sectional study.Patients and Methods: Forty-four nondialyzed CKD patients (29 male; aged 52 12 years; creatinine clearance, 37 +/- 13 mL/min/1.73 m(2) [values are mean +/- SD unless otherwise noted]) were included. Their REE was assessed by indirect calorimetry, and body composition by bioelectrical impedance. High-sensitivity C-reactive protein (hs-CRP) was also evaluated. the insertion/deletion (ins/del) polymorphism of the UCP2 gene was determined in all participants. To test whether the deletion/deletion (del/del) polymorphism of the UCP2 gene was associated with lower REE, the REE of carriers of the del/del genotype (n = 24; group Del) was compared with that of carriers of the insertion and ins/del genotype (n = 20; group Ins).Main Outcome Measure: the main outcome measure was REE.Results: the REE of group Del was similar to that of the group Ins (1379 +/- 239 kcal/day vs. 1360 +/- 289 kcal/day, respectively, P = NS). This result was maintained even after the REE was adjusted for lean body mass by analysis of covariance. in addition, in a multiple-regression analysis using REE as the dependent variable, only lean body mass and hs-CRP were significant predictors of REE.Conclusion: the results suggest that the del/del polymorphism of the UCP2 gene is not associated with lower FEE in nondialyzed CKD patients. (C) 2008 by the National Kidney Foundation, Inc.
Language English
Sponsor Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
undo de Auxilio aos Docente e Alunos da Universidade Federal de São Paulo
Oswaldo Ramos Foundation (Brazil)
Baxter Healthcare (Deerfield, IL)
Date 2008-11-01
Published in Journal of Renal Nutrition. Philadelphia: W B Saunders Co-Elsevier Inc, v. 18, n. 6, p. 489-494, 2008.
ISSN 1051-2276 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 489-494
Access rights Closed access
Type Article
Web of Science ID WOS:000260916300003

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