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  • Title: Novel role of curcumin combined with bone marrow transplantation in reversing experimental diabetes: Effects on pancreatic islet regeneration, oxidative stress, and inflammatory cytokines.
    Author: El-Azab MF, Attia FM, El-Mowafy AM.
    Journal: Eur J Pharmacol; 2011 May 01; 658(1):41-8. PubMed ID: 21349269.
    Abstract:
    Therapeutic utility of bone marrow transplantation in diabetes is an attractive approach. However, the oxidative stress generated by hyperglycemia may hinder β-cell regeneration. The present study was undertaken to investigate the therapeutic potential of curcumin, a dietary spice with antioxidant activity, bone marrow transplantation, and their combined effects in the reversal of experimental diabetes. Diabetes was induced in mice by multiple low doses of streptozotocin. After the onset of diabetes, mice were treated with curcumin (10 mM; 100 μl/mouse, i.p., for 28 days) or received a single bone marrow transplantation (10(6) un-fractionated bone marrow cells), or both. Parameters of diabetes, integrity of pancreatic islets, pancreatic oxidative stress markers, and serum pro-inflammatory cytokines, were evaluated. Treatment with either curcumin or bone marrow transplantation significantly reversed streptozotocin-induced hyperglycemia/glucose intolerance, hypoinsulinemia, and damage of pancreatic islets. Interestingly, combination of curcumin and bone marrow transplantation elicited the most profound alleviation of such streptozotocin-evoked anomalies; including islet regeneration/insulin secretion. On the other hand, curcumin, either alone or combined with bone marrow transplantation, blunted the pancreatic lipid-peroxidation, up-regulated activities of the antioxidant enzymes, and suppressed serum levels of TNF-α and IL-1β. Curcumin and single bone marrow transplantation proved their therapeutic potential in reversing diabetes when used in combination. Curcumin, via its antioxidant and anti-inflammatory effects, evidently enhanced the ability of bone marrow transplantation to regenerate functional pancreatic islets. Hence, the use of natural antioxidants combined with other therapeutic regimens to induce pancreatic regeneration is a promising strategy in the management of diabetes.
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