Myosin Type I
Mostrando 1-12 de 90 artigos, teses e dissertações.
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1. Characterization of the variety on cross sectional area, capillary density and neonatal myosin expression in the masseter and temporalis muscle / Caracterização da variação do calibre das fibras musculares, densidade capilar e expressão de miosina neonatal nos músculos masseter e temporal
Temporomandibular disfunction (TMD) is a colletive term that refers to different clinical problems of the temporomandibular joint and the jaw muscles. These disfunctions are characterizied meanly by pain, joint sounds and irregular or limited mandibular function. The jaw muscles can be involved in the TMD of muscle etiology, and by definition they are the on
Publicado em: 2009
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2. Muscle fiber type distribution and genotype correlation in the Pompe disease / Distribuição do tipo de fibras musculares e sua correlação genotípica na doença de Pompe
A doença de Pompe (GSDII), autossômica recessiva, é causada pela deficiência da enzima lisossomal que degrada o glicogênio, -glucosidase ácida (GAA). O quadro clínico varia de acordo com a idade de início da doença, grau de progressão e envolvimento dos tecidos: predominantemente cardíaco e muscular esquelético na forma de início-precoce (FIP) e
Publicado em: 2009
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3. Effect of salbutamol on innervated and denervated rat soleus muscle
The objective of the present investigation was to perform a 14-day time-course study of treatment with salbutamol, a ß2 adrenoceptor agonist, on rat soleus muscle in order to assess fiber type selectivity in the hypertrophic response and fiber type composition. Male Wistar rats were divided into four groups: control (N = 10), treated with salbutamol (N = 30
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-12
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4. Expressão da oxido nitrico sintase em musculo esqueletico de ratos cronicamente tratados com L-NAME : estudos histoenzimologicos, bioquimicos e imunohistoquimicos
Nitric oxide (NO) is a short-lived gas molecule that modulates neurotransmission, contractile force, glucose metabolism, vascular tone, and muscle function in general. Skeletal muscle is a major source of NO in mammals and expresses all three isoforms of NO synthases (NOS). Inhibitors of the NOS are useful tools for studying the role of NO in muscle physiolo
Publicado em: 2005
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5. Analise fenotipica do musculo semitendinoso de ratos wistar e os efeitos do treinamento intervalado sobre suas fibras musculares
In general, the skeletal muscles are formed to several muscle fiber types that are able to express different kinds of myosin heavy chain (MHC) isoforms. The MHCI, IIa, IId and IIb will establish the pure muscle fibers of the type I, IIA, IID and IIB, respectively and, among them there are the hybrid fibers that can express two or more MHC types. In this work
Publicado em: 2004
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6. Regenerated rat skeletal muscle after periodic contusions
In the present study we evaluated the morphological aspect and changes in the area and incidence of muscle fiber types of long-term regenerated rat tibialis anterior (TA) muscle previously submitted to periodic contusions. Animals received eight consecutive traumas: one trauma per week, for eight weeks, and were evaluated one (N = 8) and four (N = 9) months
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-11
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7. Chicken myosin IB mRNA is highly expressed in lymphoid tissues.
Little is known about the functions of members of the myosin I family in vertebrates. Chicken myosin IB is a member of the amoeba-type subclass of myosin I molecules and tissue localisation studies may provide possible clues to the functions of these myosin I molecules. The expression of the mRNA of this unconventional myosin IB was analysed by in situ hybri
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8. Force responses following stepwise length changes of rat skeletal muscle fibre types.
1. Force responses following stepwise length changes of Ca(2+)-activated skinned leg muscle fibres (6 degrees C) of the rat were correlated with their myosin heavy chain (HC) isoforms (myosin HC I, fibre type I; myosin HC IIA, type IIA; myosin HC IID (HC IIX), type IID (type IIX); myosin HC IIB, type IIB) in order to study the mechanical properties of these
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9. Stretch activation, unloaded shortening velocity, and myosin heavy chain isoforms of rat skeletal muscle fibres.
1. Contractile properties were investigated on single skinned-fibre preparations from rat leg muscles. Following the mechanical measurements, the myosin heavy chain (HC) composition of the same fibre was analysed by gradient gel electrophoresis. 2. Fibres were typed according to their myosin HC isoform composition (HCI, type I; HCIIA, type IIA; HCIID, type I
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10. Myosin I mutants with only 1% of wild-type actin-activated MgATPase activity retain essential in vivo function(s)
The single class I myosin (MYOA) of Aspergillus nidulans is essential for hyphal growth. It is generally assumed that the functions of all myosins depend on their actin-activated MgATPase activity. Here we show that MYOA mutants with no more than 1% of the actin-activated MgATPase activity of wild-type MYOA in vitro and no detectable in vitro motility activi
The National Academy of Sciences.
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11. Myosin heavy chain isoform expression and high energy phosphate content in human muscle fibres at rest and post-exercise.
1. The relationship between myosin heavy chain (MyHC) isoforms and high energy phosphate content was studied in human muscle fibres at rest and following maximal dynamic exercise lasting 25 s. 2. Single fibre fragments were characterized as type I, type IIA, type IIX or type IIAX. These latter fibres were subdivided into five groups on the basis of the propo
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12. Myosin ATPase activity after strengthening exercise.
Alteration in the histochemical activity of myosin ATPase has been demonstrated in the soleus of adult rats after brief (A) and prolonged (B) intensive weight lifting exercises. The former represented 'high intensity-short duration' and the latter 'high intensity-prolonged duration' exercise. The data revealed a significant muscle hypertrophy (23-26%) in bot