Steroid-Free Immune Suppression Impairs Glycemic Control in a Healthy Cynomolgus Monkey.

Abstract:

:The need for chronic immune suppression (IS) is one of the hurdles precluding widespread use of islet cell transplantation to restore glycemic control in patients with type 1 diabetes. We report the case of a healthy nonhuman primate (NHP) treated on and off for over 2.5 years with steroid-free IS, consisting of daclizumab induction and maintenance therapy with rapamycin and low dose tacrolimus. Treatment for 1 year resulted in a striking destabilization of glycemic control, with concomitant decreases in fasting c-peptide and insulin levels. Although these changes gradually reversed during a wash out period of 7 months, retreatment with the same therapy led to accelerated deterioration in glycemic control. Intravenous glucose tolerance and percentage of glycosylated hemoglobin testing further supported a dramatic effect on metabolic control. IS also led to decreases in weight during treatment. Histological evaluation of the pancreas revealed islet hyperplasia, with varying sizes and endocrine cell ratios that differed from normal islet composition, and parenchymal infiltration with adipose tissue. These deleterious effects of IS on glucose control and endocrine components in the native pancreas of a healthy NHP suggest that IS agents commonly utilized for islet transplantation may contribute to failure in islet allograft function in long-term transplant patients.

journal_name

Cell Transplant

journal_title

Cell transplantation

authors

Berman DM,Ruiz P Jr,Blandino-Rosano M,Bernal-Mizrachi E,Kenyon NS

doi

10.1177/0963689718823505

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

262-268

issue

3

eissn

0963-6897

issn

1555-3892

journal_volume

28

pub_type

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