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	Provedor de dados BJMBR (3) Autor Lima,V.V. (3) Tostes,R.C. (3) Webb,R.C. (3) Carneiro,F.S. (2) Giachini,F.R. (2) Brands,M.W. (1) Carneiro,Z.N. (1) Filgueira,F.P. (1) Giachini,F.R.C. (1) Hannan,J.L. (1) Lobato,N.S. (1) Mais... Palavra-chave Ca2+ influx (1) Ca2+ release-activated Ca2+ channel (1) Intracellular Ca2+ store (1) Myosin light chain (1) Na+/K+-ATPase pump (1) O-GlcNAcylation (1) Oscillatory activity (1) Ouabain (1) Sarcoplasmic reticulum (1) Small mesenteric arteries (1) Vascular reactivity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2014 (1) 2011 (1) 2009 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última A key role for Na+/K+-ATPase in the endothelium-dependent oscillatory activity of mouse small mesenteric arteries BJMBR Giachini,F.R.C.; Carneiro,F.S.; Lima,V.V.; Carneiro,Z.N.; Brands,M.W.; Webb,R.C.; Tostes,R.C.. Oscillatory contractile activity is an inherent property of blood vessels. Various cellular mechanisms have been proposed to contribute to oscillatory activity. Mouse small mesenteric arteries display a unique low frequency contractile oscillatory activity (1 cycle every 10-12 min) upon phenylephrine stimulation. Our objective was to identify mechanisms involved in this peculiar oscillatory activity. First-order mesenteric arteries were mounted in tissue baths for isometric force measurement. The oscillatory activity was observed only in vessels with endothelium, but it was not blocked by L-NAME (100 µM) or indomethacin (10 µM), ruling out the participation of nitric oxide and prostacyclin, respectively, in this phenomenon. Oscillatory activity was not... Tipo: Info:eu-repo/semantics/article Palavras-chave: Oscillatory activity; Na+/K+-ATPase pump; Ouabain; Small mesenteric arteries. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001100010 STIM1/Orai1-mediated store-operated Ca2+ entry: the tip of the iceberg BJMBR Giachini,F.R.; Lima,V.V.; Hannan,J.L.; Carneiro,F.S.; Webb,R.C.; Tostes,R.C.. Highly efficient mechanisms regulate intracellular calcium (Ca2+) levels. The recent discovery of new components linking intracellular Ca2+ stores to plasma membrane Ca2+ entry channels has brought new insight into the understanding of Ca2+ homeostasis. Stromal interaction molecule 1 (STIM1) was identified as a Ca2+ sensor essential for Ca2+ store depletion-triggered Ca2+ influx. Orai1 was recognized as being an essential component for the Ca2+ release-activated Ca2+ (CRAC) channel. Together, these proteins participate in store-operated Ca2+ channel function. Defective regulation of intracellular Ca2+ is a hallmark of several diseases. In this review, we focus on Ca2+ regulation by the STIM1/Orai1 pathway and review evidence that implicates STIM1/Orai1 in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ca2+ release-activated Ca2+ channel; Sarcoplasmic reticulum; Intracellular Ca2+ store; Ca2+ influx. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001100002 Vascular O-GlcNAcylation augments reactivity to constrictor stimuli by prolonging phosphorylated levels of the myosin light chain BJMBR Lima,V.V.; Lobato,N.S.; Filgueira,F.P.; Webb,R.C.; Tostes,R.C.; Giachini,F.R.. O-GlcNAcylation is a modification that alters the function of numerous proteins. We hypothesized that augmented O-GlcNAcylation levels enhance myosin light chain kinase (MLCK) and reduce myosin light chain phosphatase (MLCP) activity, leading to increased vascular contractile responsiveness. The vascular responses were measured by isometric force displacement. Thoracic aorta and vascular smooth muscle cells (VSMCs) from rats were incubated with vehicle or with PugNAc, which increases O-GlcNAcylation. In addition, we determined whether proteins that play an important role in the regulation of MLCK and MLCP activity are directly affected by O-GlcNAcylation. PugNAc enhanced phenylephrine (PE) responses in rat aortas (maximal effect, 14.2±2 vs 7.9±1 mN for... Tipo: Info:eu-repo/semantics/article Palavras-chave: O-GlcNAcylation; Myosin light chain; Vascular reactivity. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001000826 Registros recuperados: 3 Primeira ... 1 ... Última

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