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Pre Transplant Rapamycin Treatment in Islet Transplantation Alone

2014-08-27 03:16:14 | BioPortfolio

Summary

Numerous changes to the original Edmonton protocol have been proposed in the attempt of improving the still unsatisfactory long-term function of ITA. Rapamycin may blunt the early inflammatory response to islet transplantation in the liver, thus favoring islet engraftment.

Aim of the investigators study was to evaluate the effect of a pre-transplant treatment with rapamycin in patients with type 1 diabetes receiving islet transplant alone and immunosuppression according to the Edmonton protocol.

Description

Pre-transplant rapamycin is administered for at least four weeks prior to the first islet infusion at the dose of 0.1 mg/kg (target trough levels: 8-10 ng/mL). During the pre-transplant rapamycin treatment rapamycin trough levels, renal and liver function, white blood cells count, total lymphocytes and lymphocytes subpopulations, hemoglobin, fibrinogen, cross-linked fibrin degradation products, C-reactive protein, exogenous insulin requirement every week for the first month, and monthly thereafter are measured. Induction and maintenance immunosuppressive regimen after each islet infusion is administered according to the Edmonton protocol (daclizumab, rapamycin, target trough levels: 12-15 ng/mL during the first 3 months and 10-12 ng/mL thereafter and tacrolimus 2 mg/day,target trough levels: 4-6 ng/mL). Islets are infused into the liver through the portal vein under local anesthesia Portography is performed before and after infusion. The islet function is evaluated measuring fasting C-pep, EIR, and HbA1c, immediately before the first islet infusion and subsequently every day for the first week, and then weekly for the first month ; every month after the last islet infusion for the first year and every 6 month thereafter.

Study Design

Allocation: Non-Randomized, Control: Historical Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Diabetes Mellitus, Type 1

Intervention

rapamycin

Location

Transplant Unit, IRCCS San Raffaele
Milano
Italy
20131

Status

Completed

Source

IRCCS San Raffaele

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:16:14-0400

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A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.

The time period before the development of symptomatic diabetes. For example, certain risk factors can be observed in subjects who subsequently develop INSULIN RESISTANCE as in type 2 diabetes (DIABETES MELLITUS, TYPE 2).

A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.

A type of diabetes mellitus that is characterized by severe INSULIN RESISTANCE and LIPODYSTROPHY. The latter may be generalized, partial, acquired, or congenital (LIPODYSTROPHY, CONGENITAL GENERALIZED).

A life-threatening complication of diabetes mellitus, primarily of TYPE 1 DIABETES MELLITUS with severe INSULIN deficiency and extreme HYPERGLYCEMIA. It is characterized by excessive LIPOLYSIS, oxidation of FATTY ACIDS, production of KETONE BODIES, a sweet smell to the breath (KETOSIS;) DEHYDRATION; and depressed consciousness leading to COMA.

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