2008
DOI: 10.1124/jpet.108.139659
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Simvastatin Inhibits Catecholamine Secretion and Synthesis Induced by Acetylcholine via Blocking Na+and Ca2+Influx in Bovine Adrenal Medullary Cells

Abstract: Simvastatin, an inhibitor of HMG-CoA reductase, is a potent inhibitor of cholesterol biosynthesis and has beneficial effects in the primary and secondary prevention of cardiovascular diseases. In this study, we report the effects of simvastatin on catecholamine secretion and synthesis in cultured bovine adrenal medullary cells used as a model of sympathetic neurons. Simvastatin inhibited catecholamine secretion induced by acetylcholine, an agonist of the nicotinic acetylcholine receptor; by veratridine, an act… Show more

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Cited by 11 publications
(5 citation statements)
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References 39 publications
(38 reference statements)
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“…SIM addition led to a drastic decline in TH phosphorylation. An earlier report also showed that SIM decreases TH activity in bovine adrenal medullary cells during cardiac neural remodeling [41]. Thus our study also pinpoints the concern about safety of statins like SIM for treating disorders like Segawa’s dystonia, Parkinson’s disease and Schizophrenia.…”
Section: Discussionsupporting
confidence: 72%
“…SIM addition led to a drastic decline in TH phosphorylation. An earlier report also showed that SIM decreases TH activity in bovine adrenal medullary cells during cardiac neural remodeling [41]. Thus our study also pinpoints the concern about safety of statins like SIM for treating disorders like Segawa’s dystonia, Parkinson’s disease and Schizophrenia.…”
Section: Discussionsupporting
confidence: 72%
“…In contrast, hydrophilic pravastatin has limited access to the plasma membrane and intracellular space [13] , which may explain the absence of immediate effect on I KACh . In accordance with our results, Matsuda et al [43] showed that the inhibitory effect of simvastatin on catecholamine secretion induced by acetylcholine does not involve its inhibition of mevalonate-derived isoprenoid synthesis, and that pravastatin does not inhibit acetylcholine-induced catecholamine secretion in cultured adrenal medullary cells. Pravastatin significantly increases parasympathetic modulation of heart rate by stimulation of Gα (i2) expression [44] and protects against ventricular arrhythmias [45] , while parasympathetic stimulation is known to promote AF through shortening of atrial refractory periods.…”
Section: Discussionsupporting
confidence: 93%
“…As estatinas são drogas inibidoras da HGM-CoA que são usadas para controle do colesterol, porém sabe-se que essas drogas têm muitos efeitos pleiotrópicos, incluindo a regulação da atividade do sistema nervoso autonômico e do sistema imune. As estatinas restauram a função autonômica do sistema cardiovascular na insuficiência cardíaca congestiva 22 e modulam sua ação em casos de arritmias ventriculares e atriais pela diminuição da atividade nervosa simpática [23][24][25] . Outros estudos mostram sua ação no fluxo simpático por interferência na síntese de óxido nítrico 23 , isso é possível pela diminuição da prenilação de Rho-quinase 22,26 .…”
Section: Discussionunclassified
“…Outros estudos mostram sua ação no fluxo simpático por interferência na síntese de óxido nítrico 23 , isso é possível pela diminuição da prenilação de Rho-quinase 22,26 . A influência sobre o sistema autônomo também foi observada em células da medula adrenal bovina, a administração de sinvastatina induziu à síntese de acetilcolina por meio da supressão do fluxo de Na+ e Ca2+ 25 . A estimulação parassimpática aumenta consideravelmente o volume de secreção salivar, isso deve-se quase que totalmente à formação da guanosina 3´5´ monofosfato cíclico que ocorre nos ácinos 27 .…”
Section: Discussionunclassified