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	Provedor de dados BABT (1) Neotropical Ichthyology (1) Autor Rantin,Francisco Tadeu (2) Costa,Monica Jones (1) Donatti,Lucélia (1) Fernandes,Marisa Narciso (1) Kalinin,Ana Lucia (1) Kalinin,Ana Lúcia (1) Rios,Flavia Sant'Anna (1) Mais... Palavra-chave Excitation-contraction coupling (1) Fish (1) Morphology (1) Muscle (1) Proximate composition (1) Ryanodine (1) Sarcoplasmic reticulum (1) Starvation (1) Ventricle strips (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2009 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Differences in Ca2+-management between the ventricle of two species of neotropical teleosts: the jeju, Hoplerythrinus unitaeniatus (Spix & Agassiz, 1829), and the acara, Geophagus brasiliensis (Quoy & Gaimard, 1824) Neotropical Ichthyology Costa,Monica Jones; Rantin,Francisco Tadeu; Kalinin,Ana Lúcia. This study analyzed the physiological role of the cardiac sarcoplasmic reticulum (SR) of two neotropical teleosts, the jeju, Hoplerythrinus unitaeniatus (Erythrinidae), and the acara, Geophagus brasiliensis (Cichlidae). While the in vivo heart frequency (fH - bpm) of acara (79.6 ± 6.6) was higher than that of the jeju (50.3 ± 2.7), the opposite was observed for the ventricular inotropism (Fc - mN/mm²) at 12 bpm (acara = 28.66 ± 1.86 vs. jeju = 36.09 ± 1.67). A 5 min diastolic pause resulted in a strong potentiation of Fc (≅ 90%) of strips from jeju, which was completely abolished by ryanodine. Ryanodine also resulted in a ≅ 20% decrease in the Fc developed by strips from jeju at both subphysiological (12 bpm) and physiological (in vivo) frequencies.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Excitation-contraction coupling; Ryanodine; Sarcoplasmic reticulum; Ventricle strips. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300015 Effects of food deprivation in muscle structure and composition of traíra (Hoplias malabaricus): potential implications on flesh quality BABT Rios,Flavia Sant'Anna; Donatti,Lucélia; Fernandes,Marisa Narciso; Kalinin,Ana Lucia; Rantin,Francisco Tadeu. Hoplias malabaricus (traíra) were experimentally starved (0 to 240 days) and subsequently re-fed for 30 days (after 90 and 240-d fasting). Long-term starvation produced minor changes in muscle composition, but shrinkage of muscle fibres was a conspicuous result. The diameter of muscle fibres decreased gradually and the spaces among them increased as the starvation period progressed. After re-feeding, fish prior starved for 90 days presented partial restoration on diameter of muscle fibres. However, the fibres remained shrunken after re-feeding following 240-d fasting. While the lipid content did not change, the protein levels fell after 240-d fasting, but they were restored after re-feeding Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Morphology; Muscle; Proximate composition; Starvation. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200025 Registros recuperados: 2 Primeira ... 1 ... Última

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