Title : Protein kinase C agonists increase the expression of angiotensin II receptors in neuronal cultures.

Pub. Date : 1987 Jun

PMID : 3572405






7 Functional Relationships(s)
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1 In the present study, we have examined the effects of protein kinase C activators, phorbol esters, on the expression of Ang II receptors in neuronal cultures prepared from 1-day-old rat brains. Phorbol Esters angiotensinogen Rattus norvegicus
2 The active phorbol ester phorbol-12-myristate-13-acetate (TPA) caused time- and concentration-dependent increases in the specific binding of [125I]Ang II to its receptors in neuronal cultures of normotensive and spontaneously hypertensive rat brains. Phorbol Esters angiotensinogen Rattus norvegicus
3 The stimulatory effect of TPA on Ang II receptors was apparent within 15 min and reached a maximum between 1 and 2 h. Ang II specific binding had returned to control levels by 24 h. Various phorbol esters increased [125I]Ang II binding in accordance with their order of potency in stimulating protein kinase C activity. Phorbol Esters angiotensinogen Rattus norvegicus
4 The stimulatory effect of TPA on Ang II receptors was apparent within 15 min and reached a maximum between 1 and 2 h. Ang II specific binding had returned to control levels by 24 h. Various phorbol esters increased [125I]Ang II binding in accordance with their order of potency in stimulating protein kinase C activity. Phorbol Esters angiotensinogen Rattus norvegicus
5 The stimulatory effect of TPA on Ang II receptors was apparent within 15 min and reached a maximum between 1 and 2 h. Ang II specific binding had returned to control levels by 24 h. Various phorbol esters increased [125I]Ang II binding in accordance with their order of potency in stimulating protein kinase C activity. Phorbol Esters angiotensinogen Rattus norvegicus
6 Saturation and Scatchard analysis revealed that the phorbol ester-induced increase in [125I]Ang II binding was due to an increase in the number of Ang II receptors. Phorbol Esters angiotensinogen Rattus norvegicus
7 Saturation and Scatchard analysis revealed that the phorbol ester-induced increase in [125I]Ang II binding was due to an increase in the number of Ang II receptors. Phorbol Esters angiotensinogen Rattus norvegicus