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β-cell dysfunction rather than insulin resistance is the main contributing factor for the development of postrenal transplantation diabetes mellitus

Authors
 J. H. NAM ; J. I. MUN ; K. B. HUH ; H. C. LEE ; K. R. KIM ; S. K. LIM ; Y. D. SONG ; B. S. CHA ; C. W. AHN ; K. PARK ; K. H. CHOI ; S. W. KANG ; S. I. KIM 
Citation
 Transplantation, Vol.71(10) : 1417~1423, 2001 
Journal Title
 Transplantation 
ISSN
 0041-1337 
Issue Date
2001
Abstract
Background. Our study was undertaken to investigate the pathogenesisand possible risk factors for postrenal transplantation diabetes mellitus(PTDM). Methods. We recruited 114 patients with normal glucose tolerance(NGT) and performed both 75-g oral glucose tolerance tests (OGTT) and shortinsulin tolerance tests 1 week before and 9–12 months aftertransplantation. Results. The subjects were classified into three groups by WorldHealth Organization criteria on the basis of OGTT after transplantation: (a)36 (31.6%) subjects with normal glucose tolerance; (b) 51 (45.7%) subjectswith impaired glucose tolerance (IGT); and (c) 27 (23.7%) subjects withpostrenal transplantation diabetes mellitus. Dosages of steroid andcyclosporine were equivalent among the three groups. Before transplantation,the fasting and 2-hr plasma glucose and proinsulin/insulin (PI/I) ratios weresignificantly higher in the IGT and PTDM groups than in the NGT group, but theinsulin sensitivity index (ISI) was not significantly different among thethree groups. In addition, the area under the curve-insulin on OGTT wassignificantly lower in the PTDM group than in the NGT group. Aftertransplantation, however, the ISI was increased in all groups. Furthermore,the ISI and PI/I ratios revealed significantly higher values in the PTDM groupthan in the NGT group aftertransplantation. Conclusions. These results revealed that fasting and 2-hr plasma glucoselevels, as well as the proinsulin/insulin ratio before transplantation, areboth possible indicators of [beta]-cell dysfunction and may be predictors forthe development of PTDM. Furthermore, [beta]-cell dysfunction, rather thaninsulin resistance, was proven to be the main factor for the pathogenesis ofPTDM.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/142160
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Internal Medicine
Yonsei Authors
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