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Energy metabolism in the granulation tissue of diabetic rats during cutaneous wound healing

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Abstract

The skin cells chiefly depend on carbohydrate metabolism for their energy requirement during cutaneous wound healing. Since the glucose metabolism is greatly hampered in diabetes and this might affect wound repair process. This prompted us to investigate the intermediate steps of energy metabolism by measuring enzyme activities in the wound tissues of normal and streptozotocin-induced diabetic rats following excision-type of cutaneous injury. The activities of key regulatory enzymes namely hexokinase (HK), phosphofructokinase (PFK), lactate dehydrogenase (LDH), citrate synthase (CS) and glucose-6 phosphate dehydrogenase (G6PD) have been monitored in the granulation tissues of normal and diabetic rats at different time points (2, 7, 14 and 21 days) of postwounding. Interestingly, a significant alteration in all these enzyme activities was observed in diabetic rats. The activity of PFK was increased but HK, LDH and CS showed a decreased activity in the wound tissue of diabetics as compared to normal rats. However G6PD exhibited an elevated activity only at early stage of healing in diabetic rats. Thus, the results suggest that significant alterations in the activities of energy metabolizing enzymes in the wound tissue of diabetic rats may affect the energy availability for cellular activity needed for repair process and this may perhaps be one of the factor responsible for impaired healing in these subjects. (Mol Cell Biochem 270: 71–77, 2005)

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  1. Asheesh Gupta

    Present address: Division of Biochemical Pharmacology, Defence Institute of Physiology and Allied Sciences, Delhi, 110054, India

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  1. Division of Pharmacology, Central Drug Research Institute, P.O. Box No. 173, Lucknow, 226001, India

    Asheesh Gupta & Ram Raghubir

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  1. Asheesh Gupta
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  2. Ram Raghubir
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Correspondence to Ram Raghubir.

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Gupta, A., Raghubir, R. Energy metabolism in the granulation tissue of diabetic rats during cutaneous wound healing. Mol Cell Biochem 270, 71–77 (2005). https://doi.org/10.1007/s11010-005-5258-3

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  • DOI: https://doi.org/10.1007/s11010-005-5258-3

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