The Role of NO-cGMP Signaling Pathway in Pancreatic Beta-cell Function
Maria-Luisa Lazo-de-la-Vega-Monroy and Alonso Vilches-FloresAffiliation:
Departamento de Ciencias Medicas, División de Ciencias de la Salud, Universidad de Guanajuato Campus Leon. 20 de Enero No. 929 Col. Obregon, 37320 León, Guanajuato, Mexico.
AbstractInsulin-secretion in pancreatic beta-cells is modulated by several second messengers and complex signaling pathways. Nitric oxide has been usually associated with beta-cell apoptosis, as part of the physiopathology of Type-2 diabetes. However there is increasing evidence that NO/cGMP signaling pathway is also involved in the secretory function through the activation of some target proteins such as the modulation of glucokinase activity, ionic channels, protein kinases, phosphodiesterases; and gene expression through the activation of transcription factors. These observations could be useful to establish new therapeutic strategies to maintain beta-cell optimal response before the development of islet dysfunction that leads to diabetes.
channels, cGMP, insulin secretion, insulin transcription, Nitric oxide, pancreatic beta-cell, PKG, soluble Guanylate Cyclase.
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