Abstract
Male Wistar rats of the third generation of rats drinking 200 μg Ni2+/mL as NiCl2 in their drinking water were studied. Basal plasma glucose and insulin levels were unchanged. Epididymal adipocytes from Ni2+-fed rats showed an increased insulin binding with a slight increase in apparent insulin affinity (ED50: Ni2+-fed rats 2.8×10−9 M and controls 5×10−9 M) with no change in insulin receptor numbers (Ni2+-fed rats 143,000±12,000 (6) receptors/cell and controls 126,000±13,000 (5)). Moreover, a decreased sensitivity to the antilipolytic response of insulin was also observed in adipocytes from Ni2+-fed rats. These events could represent actions of Ni2+ both at the receptor and post-receptor insulin levels. Several possible mechanisms involved in the process are suggested.
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Mayor, P., Cabrera, R., Ribas, B. et al. Effect of long-term nickel ingestion on insulin binding and antilipolytic response in rat adipocytes. Biol Trace Elem Res 22, 63–70 (1989). https://doi.org/10.1007/BF02917417
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DOI: https://doi.org/10.1007/BF02917417