Posttransplant Diabetes Mellitus: A Single-Center Study

New onset of diabetes after transplantation - an overview of epidemiology, mechanism of development and diagnosis

New onset of diabetes after transplantation (NODAT) is a serious and common complication following solid organ transplantation. NODAT has been reported to occur in 2% to 53% of renal transplant recipients. Several risk factors are associated with NODAT, however the mechanisms underlying were unclear. Renal transplant recipients who develop NODAT are reported to be at increased risk of infections, cardiovascular events, graft loss and patient loss. It has been reported that the incidence of NODAT is high in the early transplant period due to the exposure to the high doses of corticosteroids, calcineurin inhibitors and the physical inactivity during that period. In addition to these risk factors the traditional risk factors also play a major role in developing NODAT. Early detection is crucial in the management and control of NODAT which can be achieved through pretransplant screening there by identifying high risk patients and implementing the measures to reduce the development of NODAT. In the present article we reviewed the literature on the epidemiology, risk factors, mechanisms involved and the diagnostic criteria in the development of NODAT. Development of diagnostic tools for the assessment of β-cell function and determination of the role of glycemic control would include future area of research.

Application of low dose of FK506 in pancreas transplantation model in Wistar-SD rats

OBJECTIVE

To probe into application of low dose of FK506(Tacrolimus) in pancreas transplantation.

METHODS

Effects of low-dose FK506 (Tacrolimus) in pancreas transplantation with examination of ELISA Electron microscopy and TUNEL by method of random control were studied.

RESULTS

Blood glucose concentration in control group is higher than that in treated group A (FK506) and treated group B (CsA) 7 days after transplantation (p < 0.05). Serum C-peptide and insulin concentrations in control group are less than that in treated group A (FK506) and treated group B (CsA) 7 days after transplantation (p < 0.05). Blood glucose, serum C-peptide and insulin concentrations are same as that in control group, group A (FK506) and group B (CsA) (p > 0.05).There are more apoptotic nuclei in control group than that in treated group A (FK506) and treated group B (CsA) (p < 0.05). There is no significant difference between group A (FK506) and treated group B (CsA) in sum of apoptotic nuclei (p > 0.05). There is no significant difference among treated group A (FK506) and treated group B (CsA) in electron microscopy fields.

CONCLUSION

Low-dose FK506 applied in pancreas transplantation could not only be effective for immunosuppressive, but also be safe for islet cells of pancreas.

Pre-transplant weight but not weight gain is associated with new-onset diabetes after transplantation: a multi-centre cohort Spanish study

Background. New-onset diabetes after transplantation (NODAT) is associated with poorer outcomes in kidney transplantation (KT). Thus, identification of modifiable risk factors may be crucial for ameliorating the impact of this entity on transplant outcomes. We assessed the relationships between the weight, body mass index (BMI) and weight gain with NODAT.Methods. We retrospectively analysed 2168 KT performed in Spain during 1990, 1994, 1998 and 2002, with a functioning graft after the first year. At 1 year after KT, three groups were considered: (i) NODAT group (n = 215); (ii) impaired fasting glucose (IFG) group (n = 389); (iii) control group (n = 1564).Results. The incidence of NODAT was 10.8%, 9.9% and 10.0% at 3, 12 and 24 months post-transplantation, respectively. Older recipient age (P < 0.0001) and greater use of tacrolimus (P < 0.0001) were observed in NODAT group. Obesity was more frequent in NODAT group (P < 0.0001), but patients with NODAT had a lower weight gain during the first year after KT (P = 0.038). On multivariate analysis, independent risk factors associated with the development of NODAT were: recipient age [odds ratio (OR): 1.060, P = 0.0001], tacrolimus (OR: 1.611, P = 0.005), triglycerides (OR: 1.511, P = 0.018), positive hepatitis C virus (HCV) status (OR: 1.969, P = 0.001) and pre-transplant body mass index (BMI) (OR: 1.135, P = 0.0001), but not the weight gain.Conclusions. BMI, but not the weight gain at 1 year after transplant, is an independent risk factor for NODAT. Tailoring clinical strategies may minimize the impact of this complication.

New-onset diabetes after transplantation: a review of recent literature

PURPOSE OF REVIEW

New-onset diabetes after transplantation (NODAT) is a serious complication of organ transplantation. Data from kidney transplant studies show that NODAT is a strong independent predictor of graft failure and cardiovascular mortality. This article reviews NODAT in context of some of the recent data on definition, incidence, risk factors, genetics, and the impact on graft survival and cardiovascular events.

RECENT FINDINGS

The reported incidence of NODAT continues to be high. The variability in the incidence can be attributed to varying definitions used in studies and also to the immunosuppressive regimens used at various centers. A 5-day oral glucose tolerance test may be a better predictor for developing NODAT. Comparison studies of various immunosuppressants in contributing to this condition show variable and conflicting results. Hepatitis C has emerged as a strongly associated risk factor and sirolimus may not be less diabetogenic, as thought before. In addition to serious infections, NODAT has been associated with increased cardiovascular risk and atherosclerosis and higher graft failures.

SUMMARY

New-onset diabetes continues to be a common and potentially serious complication after organ transplantation. Risk stratification, early diagnosis, and intervention for this condition may contribute to better long-term graft survival and help in reducing cardiovascular mortality.

New onset diabetes mellitus after liver transplantation and hepatitis C virus infection: meta-analysis of clinical studies

New onset diabetes mellitus (NODM) postliver transplantation (LT) is very common and may negatively affect patient and graft survival, but its causative mechanism is still unclear. This study was to analyze the connection between Hepatitis C virus (HCV) infection and NODM after LT by systematically reviewing published medical literature. We electronically searched databases of MEDLINE, EMBASE and the Cochrane Library from January 1980 to January 2008. Only retrospective studies could be identified. Seven of them were subjected to the meta-analysis. Analysis was performed by using revman 4.2 software. We found that HCV increased the prevalence of NODM [OR 2.46; 95%CI (1.44, 4.19)]. Then, we further analyzed the association between HCV and persistent-NODM (P-NODM) after LT. The result showed that prevalence of P-NODM was higher in HCV-positive group than in HCV-negative group with marginally statistical significance [OR = 1.39; 95%CI (1.06, 1.83)]. The present meta-analysis based on retrospective studies suggested a significant relationship between HCV and NODM after LT, and it seems that HCV infection might also increase the prevalence of P-NODM. Multicenter, large sized prospective studies are still needed to further confirm these results.