Slow Twitch
Mostrando 1-12 de 196 artigos, teses e dissertações.
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1. Perfil histoquímico das fibras do músculo bíceps braquial do macaco-prego (Cebus apella, Linnaeus, 1758)
Uma análise geral do comportamento do “Cebus apella” mostra que este primata quando desloca para se alimentar ou realizar outra atividade apresenta diferentes maneiras de locomoção. Estas informações mostram que o músculo bíceps braquial deste animal é usado freqüentemente nas suas atividades de locomoção, mas deve ser lembrado ainda que este
Braz. J. Biol.. Publicado em: 2014-08
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2. Effect of tibiotarsal joint inflammation on gene expression and cross-sectional area in rat soleus muscle
BACKGROUND: Joint inflammation is a common clinical problem in patients treated by physical therapists. The hypothesis of this study is that joint inflammation induces molecular and structural changes in the soleus muscle, which is composed mainly of slow-twitch muscle fibers. OBJECTIVE: To study the effect of tibiotarsal joint inflammation on muscle f
Braz. J. Phys. Ther.. Publicado em: 07/06/2013
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3. Evaluation of the electromyographic signal and the histomorphometry of vastus lateralis muscle in different electrodes placement, intensities of contraction and genders / Avaliação do sinal eletromiografico e da histomorfometria do musculo vasto lateral em diferentes posicionamentos de eletrodos, intensidades de contração e generos
It has been shown that electromyography signal (EMGs) and histomorphometry are different along the muscle belly and between genders, although the relationship between these parameters is not clear. The aim of this study was to evaluate the EMGs in different intensities of volunteer isometric muscle contraction (10-100%) and electrodes positions over the bell
Publicado em: 2010
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4. Caracterização da distribuição da miosina rápida, lenta e híbrida na musculatura da mastigação / Characterization of fast, slow and hybrid fibers in masticatory muscles
Introdução: Os músculos da mastigação masseter, temporal, pterigóideo medial e pterigóideo lateral são componentes essenciais do sistema estomatognático. A mastigação decorre da movimentação destes músculos. Além da função fisiológica, os músculos da mastigação estão envolvidos na disfunção temporomandibular (DTM) que é importante ca
Publicado em: 2009
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5. Efeito da inflamação articular aguda sobre a morfologia e a expressão gênica dos músculos sóleo e tibial anterior de ratos
Clinic evidences show that joint injuries affect muscles related to that joint making them more sensitive to atrophy and loss of force. However, muscle molecular responses in those conditions has not been investigated yet. Objective: To evaluate the effects of tibiotarsal acute joint inflammation on the expression of genes related to muscle atrophy (atrogin-
Publicado em: 2008
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6. Cyclosporin A preferentially attenuates skeletal slow-twitch muscle regeneration
Calcineurin, a Ca2+/calmodulin-dependent phosphatase, is associated with muscle regeneration via NFATc1/GATA2-dependent pathways. However, it is not clear whether calcineurin preferentially affects the regeneration of slow- or fast-twitch muscles. We investigated the effect of a calcineurin inhibitor, cyclosporin A (CsA), on the morphology and fiber diameter
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-04
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7. Inhibition of the sarcoplasmic reticulum Ca2+ pump with thapsigargin to estimate the contribution of Na+-Ca2+ exchange to ventricular myocyte relaxation
Relaxation in the mammalian ventricle is initiated by Ca2+ removal from the cytosol, which is performed by three main transport systems: sarcoplasmic reticulum Ca2+-ATPase (SR-A), Na+-Ca2+ exchanger (NCX) and the so-called slow mechanisms (sarcolemmal Ca2+-ATPase and mitochondrial Ca2+ uptake). To estimate the relative contribution of each system to twitch r
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-12
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8. Estudo da interação da veratrina com o musculo esqueletico por metodos histoquimicos, ultraestruturais e bioquimicos
Veratrine, a commercial extract from the South and Central America plant Schoenocaulon officinale (Liliaceae), activates voltage-dependent Na + channels to produce persistent depolarization and an increase in sodium ion penneability in muscle fibers or nerves. The aim of this study was to investigate the effects of the veratrine aIkaloid on skeletal muscle o
Publicado em: 2000
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9. Ação do veneno total de Bothrops pirajai e de suas frações miotoxicas piratoxinas I e III sobre a musculatura esqueletica : estudos in vitro
Several reasons can be cited which motivate the study of natural substances such as the characterization of the active principles and its biological effects. Among them, the ophidic venoms stand out because it is common the occurrence of accidental envenomation after snake bites in tropical countries. In Brazil, ophidic accidents account for a major part in
Publicado em: 1999
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10. Properties of the fragmented sarcoplasmic reticulum from fast twitch and slow twitch muscles
Skeletal muscle of guinea pigs is composed of at least three types of fibers which are distinguishable by their kinetic and histochemical properties. Fast twitch muscles may be histochemically red or white; fragmented sarcoplasmic reticulum (FSR) prepared from both types of fast twitch muscles has identical calcium-accumulating capacity (maximal calcium upta
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11. Comparison between slow sodium channel inactivation in rat slow- and fast-twitch muscle.
1. Voltage-clamp Na+ currents (INa) were studied in rat soleus slow-twitch muscle fibres at about 18 degrees C using the loose-patch-clamp technique. The maximum inward current density was produced by depolarizations to about -19 mV. 2. Fast inactivation was studied utilizing 20 ms conditioning potentials. INa was reduced by 50% with conditioning potentials
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12. Six1 and Eya1 Expression Can Reprogram Adult Muscle from the Slow-Twitch Phenotype into the Fast-Twitch Phenotype
Muscle fibers show great differences in their contractile and metabolic properties. This diversity enables skeletal muscles to fulfill and adapt to different tasks. In this report, we show that the Six/Eya pathway is implicated in the establishment and maintenance of the fast-twitch skeletal muscle phenotype. We demonstrate that the MEF3/Six DNA binding elem
American Society for Microbiology.