Diabetes Clinical Trial
Official title:
Nitrite Infusion in Islet Cell Transplantation: Test of Clinical Efficacy and Determination of Cytoprotective Mechanisms
This study seeks to investigate the effects of administering nitrite to pancreatic islet cells that have been removed from a patient for autotransplantation.
Patients diagnosed with chronic pancreatitis or recurrent acute pancreatitis may acquire insulin-dependent diabetes due to islet cell destruction. Therefore, islet cell autotransplantation is the optimal therapeutic approach for many of these patients. Islet cell autotransplantation is typically done by excision of the pancreas, followed by isolation of the islet cells and then infusion of these cells into the sinusoids of the liver. Isolation of the islet cells occurs in an ischemic and hypoxic environment, resulting in ischemia reperfusion (IR) injury and destruction of islet cells following infusion into the sinusoids. Hence, strategies to prevent IR injury and subsequent islet cell destruction, such as the administration of inhaled nitric oxide (NO) or sodium nitrite (NaNO2) could enhance islet cell survival following reperfusion, also decreasing long-term insulin requirement. The purpose of this study is to determine if NO administered by infusion in patients undergoing islet cell auto transplantation, will inhibit islet cell destruction, increase diabetes cure rate (decrease the amount of and/or the need for long-term insulin requirement), decrease the ischemic injury (reduces the injury to the islet cells from a decrease in oxygen levels during procurement of the islet cells) during islet cell procurement, and decrease IR injury following islet cell infusion. The primary endpoints of the study are exogenous insulin use, HgbA1c levels post-operatively, and blood glucose levels. ;
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