Title : The extracellular regulated kinases (ERK) 1/2 mediate cannabinoid-induced inhibition of gap junctional communication in endothelial cells.

Pub. Date : 2002 Jul

PMID : 12086980






5 Functional Relationships(s)
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1 In cultured endothelial cells, Delta(9)-tetrahydrocannabinol (Delta(9)-THC) and the cannabinoid receptor agonist HU210, increased the phosphorylation of extracellular regulated kinases 1/2 (ERK1/2) and inhibited gap junctional communication, as determined by Lucifer Yellow dye transfer and electrical capacity measurements. Dronabinol mitogen-activated protein kinase 3 Homo sapiens
2 In cultured endothelial cells, Delta(9)-tetrahydrocannabinol (Delta(9)-THC) and the cannabinoid receptor agonist HU210, increased the phosphorylation of extracellular regulated kinases 1/2 (ERK1/2) and inhibited gap junctional communication, as determined by Lucifer Yellow dye transfer and electrical capacity measurements. Dronabinol mitogen-activated protein kinase 3 Homo sapiens
3 Delta(9)-THC elicited a pronounced increase in the phosphorylation of connexin 43, which was sensitive to PD98059 and U0126, two inhibitors of ERK1/2 activation. Dronabinol mitogen-activated protein kinase 3 Homo sapiens
4 Inhibition of ERK1/2 also prevented the Delta(9)-THC-induced inhibition of gap junctional communication. Dronabinol mitogen-activated protein kinase 3 Homo sapiens
5 These results indicate that the cannabinoid-induced activation of ERK1/2, which leads to the phosphorylation of connexin 43 and inhibition of gap junctional communication, may partially account for the Delta(9)-THC-induced inhibition of EDHF-mediated relaxation. Dronabinol mitogen-activated protein kinase 3 Homo sapiens