Excitation Contraction Coupling
Mostrando 1-12 de 195 artigos, teses e dissertações.
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1. Effects of eugenol on resting tension of rat atria
In cardiac and skeletal muscle, eugenol (μM range) blocks excitation-contraction coupling. In skeletal muscle, however, larger doses of eugenol (mM range) induce calcium release from the sarcoplasmic reticulum. The effects of eugenol are therefore dependent on its concentration. In this study, we evaluated the effects of eugenol on the contractility of isol
Braz J Med Biol Res. Publicado em: 21/03/2014
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2. EFFECT OF AQUEOUS FRACTION OF LEAVES DE COSTUS SPIRALIS (JACQ.) ROSCOE CONTRACTILE FUNCTION ON HEART MAMMALS. / EFEITO DA FRAÇÃO AQUOSA DAS FOLHAS DE COSTUS SPIRALIS (JACQ.) ROSCOE SOBRE A FUNÇÃO CONTRÁTIL DO CORAÇÃO DE MAMÍFEROS.
Teas and infusions from C. spiralis leaf have largely been used by folk medicine as diuretic, hypotensor, cytotoxic, immunomodulator, antilithiasic, antidiarrheic, antispasmodic, antiurolitic, antimicrobian, antifungic, antioxidant, antileishmania activity, antiinflamatory, and antiedematogenic activity. In spite of these biological effects attributed to the
Publicado em: 2011
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3. Estudo farmacológico do timol e carvacrol sobre a contratilidade da aorta isolada de rato / Pharmacological study of carvacrol and thymol on contractility of isolated rat aorta
Timol e carvacrol são extraídos de alguns óleos essenciais de plantas dos gêneros Origanum, Thymus e Lippia. Esses monoterpenóides apresentam, dentre outras atividades biológicas, importante efeito relaxante no músculo liso. Este estudo visa avaliar o efeito vasorrelaxante do timol e carvacrol em aorta isolada de rato e seus possíveis mecanismos de a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2009
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4. Relaxamento do músculo liso traqueal de rato pelo eugenol. / Relaxation of rat tracheal smooth muscle by eugenol.
Eugenol, a phenol monoterpenoid, is the main component of clove oil. This study aims to evaluate the relaxation of tracheal smooth muscle of rat by eugenol and the mechanisms underlying these effects. We used preparations of trachea of male Wistar rats maintained in aerated modified Tyrode to record isometric muscle contractions. Increasing and cumulative co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2009
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5. Efeitos da acidose lática nos processos da contratilidade cardíaca do teleósteo de água doce matrinxã, Brycon cephalus
In the majority of the fish species already studied, cardiac force contraction is sensitive to small changes in the extracellular pH. During intense swimming, the increased lactic acid (LA) levels significantly reduce the Fc, impairing the myocardial contractile performance. The freshwater teleost matrinxã, Brycon cephalus, is a reofilic species presenting
Publicado em: 2009
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6. Efeito do inseticida organofosforado metilparation (Folisuper 600BR) sobre a função cardio-respiratória do peixe teleósteo matrinxã, Brycon cephalus
Methyl parathion (MP) is an organophosphorus insecticide used worldwide in agriculture and aquaculture due to its high activity against a broad spectrum of insect pests. In a first phase of the study, specimens of matrinxã (Brycon cephalus) were exposed to a sublethal concentration (2 mg.L-1, 1/3 of the 96h-LC50) of MP (Folisuper 600, MP 600 g.L-1) for 96h,
Publicado em: 2007
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7. CaMKIIdelta overexpression in hypertrophy and heart failure: cellular consequences for excitation-contraction coupling
Ca/calmodulin-dependent protein kinase IIdelta (CaMKIIdelta) is the predominant isoform in the heart. During excitation-contraction coupling (ECC) CaMKII phosphorylates several Ca-handling proteins including ryanodine receptors (RyR), phospholamban, and L-type Ca channels. CaMKII expression and activity have been shown to correlate positively with impaired e
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-09
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8. Minor sarcoplasmic reticulum membrane components that modulate excitation–contraction coupling in striated muscles
In striated muscle, activation of contraction is initiated by membrane depolarisation caused by an action potential, which triggers the release of Ca2+ stored in the sarcoplasmic reticulum by a process called excitation–contraction coupling. Excitation–contraction coupling occurs via a highly sophisticated supramolecular signalling complex at the junctio
Blackwell Science Inc.
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9. Involvement of sarcoplasmic reticulum 'Ca2+ release channels' in excitation-contraction coupling in vertebrate skeletal muscle.
1. Pharmacological blockers of calcium-induced calcium release from isolated skeletal sarcoplasmic reticulum (SR) vesicles have been introduced into frog skeletal muscle fibres to determine their effects on excitation-contraction coupling. 2. Among the blockers tested, Ruthenium Red, neomycin, gentamicin and 9-aminoacridine inhibited the SR Ca2+ release asso
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10. Excitation—contraction coupling in smooth muscle cells of the guinea-pig mesenteric artery
1. The excitation—contraction coupling mechanism in the smooth muscle of the guinea-pig mesenteric artery was studied using intact and chemically skinned muscle cells.
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11. Optical studies of excitation-contraction coupling in the early embryonic chick heart.
Excitation-contraction coupling at the onset of beating in the 9-10-somite embryonic chick heart was studied by means of an optical method together with a voltage-sensitive merocyanine-rhodanine dye. Spontaneous optical signals were recorded simultaneously from many areas of the embryonic heart, using a square photodiode matrix array. At time of initiation o
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12. A PRELIMINARY NOTE ON EXCITATION-CONTRACTION COUPLING