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- W2775187415 abstract "Impaired insulin sensitivity (IS) predicts complications and mortality in type 1 diabetes (T1D). Insulin sensitivity improves shortly after islet cell transplant for T1D, yet long-term changes in IS and associated factors such as patient characteristics, transplant factors, clinical management, and IS-related biomarkers are unknown.Up to 9 years (mean 4) of longitudinal data were available on 22 adults (18 female) with T1D who received 1 to 3 transplants in Phase 1/2 or 3 clinical trials (2004-2014). Metabolic testing posttransplant estimated IS by the Homeostasis Model Assessment for Insulin Resistance (HOMA-IR; 111 observations) and the Simple Index of Insulin Sensitivity (SIis ; 95 observations).Simple Index of Insulin Sensitivity significantly increased the first year posttransplant (P = .02), then stabilized (P = .39); HOMA-IR remained stable posttransplant (P = .92). Adjusting for age and BMI, higher SIis was associated with lower HbA1c following transplant (P = .03). Greater IS as measured by lower HOMA-IR and higher SIis was associated with lower fasting C-peptide (both P ≤ .04) and also with higher exenatide dose (both P ≤ .01). More islets transplanted were associated with higher SIis (P < .0001). Lower leptin at transplant predicted lower HOMA-IR and higher SIis after transplant, and lower bone marker receptor activator of nuclear factor kappa-B ligand predicted lower HOMA-IR (all P ≤ .01).Insulin sensitivity measured by SIis was improved several years following transplant, while IS measured by HOMA-IR did not worsen. Higher exenatide dose, more islets transplanted, and diet and exercise (lowering leptin and receptor activator of nuclear factor kappa-B ligand) may improve IS, which may enhance glycaemic control and lower metabolic demand on transplanted islets. Long-term clamp studies are needed to confirm these results." @default.
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- W2775187415 date "2018-01-11" @default.
- W2775187415 modified "2023-10-17" @default.
- W2775187415 title "Long term (4 years) improved insulin sensitivity following islet cell transplant in type 1 diabetes" @default.
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- W2775187415 doi "https://doi.org/10.1002/dmrr.2972" @default.
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