Effects of Acute Exercise and Training on Gene Expression and Regulatory Proteins in Human Skeletal Muscle PDF Download
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Author:
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ISBN: 9789178314812
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN: 9789178314812
Category :
Languages : en
Pages :
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Author: Yorgos N. Kraniou
Publisher:
ISBN:
Category : Carbohydrates
Languages : en
Pages : 170
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Twenty two, young, healthy individuals participated in three studies aiming to assess the effect of various types of physical activity - acute exercise of moderate intensity and duration, varying intensity, short-term training - on skeletal muscle GLUT-4 gene and protein expression as well as on a range of genes encoding the proteins involved in carbohydrate metabolism in skeletal muscle.
Author: Antonios Matsakas
Publisher: diplom.de
ISBN: 3832482938
Category : Medical
Languages : en
Pages : 124
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Inhaltsangabe:Abstract: Skeletal muscle is a complex and heterogeneous tissue capable of remarkable adaptation in response to various stimuli such as exercise training. Molecular biology approaches have made a large contribution to our current understanding of how mechanical loading can alter gene expression and muscle protein synthesis rates in skeletal muscle. The steady-state level of a given mRNA is a function of both its rate of synthesis and its rate of degradation, implying that the rate of change in response to a cellular stimulus is dependent on the dynamics of mRNA turnover. Changes in muscle mRNA steady-state levels can be taken as an index of changes in gene expression, constituting currently one of the best described and understood molecular events that underlie muscle plasticity. The discovery of new growth factors involved in the regulation of muscle development provides a better understanding of the molecular mechanisms involved in the adaptation of skeletal muscle to exercise training. Since it has been shown that changes in contractile function can be brought about by switching on one subset and repressing another subset of genes, it was hypothesized that the steady state level of multiple mRNAs (growth factors and metabolic genes) involved in regulatory functions in a muscle which is frequently recruited during exercise is different between endurance trained versus untrained rats. Recent scientific data indicate that myostatin constitutes a limiting factor in normal muscle development playing a crucial role in skeletal muscle hypertrophy. Nevertheless, there are only scarce data so far about the role of myostatin in the exercise-induced skeletal muscle adaptation. The transient changes in regulatory and structural gene expression provide the molecular basis of the adaptability of the skeletal muscle to exercise stimulus. To get an insight into the molecular mechanisms of skeletal muscle adaptation, the main objective of this study was to examine the effect of both the short- and long- term effect of exercise (five day of swimming vs. chronic wheel running) on IGF-I and MSTN (positive and negative skeletal muscle regulators respectively) mRNA contents in male Wistar rats. Potential increase of positive and/or decrease of negative regulators of muscle growth lead to enhanced muscle-progenitor proliferation providing a new perspective in the mechanism of muscle adaptability. It was hypothesized that exercise training could be [...]
Author: Mark Hargreaves
Publisher: Human Kinetics
ISBN: 9780736041034
Category : Energy metabolism
Languages : en
Pages : 320
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A comprehensive reference for biochemists, sport nutritionists, exercise physiologists, and graduate students in those disciplines. Provides information on the metabolic processes that take place during exercise, examining in depth the mobilization and utilization of substrates during physical activity. Focuses primarily on the skeletal muscle, but also discusses the roles of the liver and adipose tissue. Annotation copyright by Book News, Inc., Portland, OR
Author: Sandra Thöny
Publisher:
ISBN:
Category :
Languages : en
Pages : 44
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Author: Bruce Spiegelman
Publisher: Springer
ISBN: 3319727907
Category : Science
Languages : en
Pages : 108
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The world is faced with an epidemic of metabolic diseases such as obesity and type 2 diabetes. This is due to changes in dietary habits and the decrease in physical activity. Exercise is usually part of the prescription, the first line of defense, to prevent or treat metabolic disorders. However, we are still learning how and why exercise provides metabolic benefits in human health. This open access volume focuses on the cellular and molecular pathways that link exercise, muscle biology, hormones and metabolism. This will include novel “myokines” that might act as new therapeutic agents in the future.
Author: Brian McDonagh
Publisher: Frontiers Media SA
ISBN: 2889451968
Category :
Languages : en
Pages : 103
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Skeletal muscle represents the largest organ of the human body and comprises about 40% of total body mass in humans. Even in people who ‘age well’, there is a noticeable loss of muscle strength and function that accelerates dramatically after the age of 60, a major factor in the reduction in life quality for the aging population. One of the most effective interventions to maintain muscle mass and function is through exercise. Skeletal muscle generates reactive oxygen and reactive nitrogen (ROS/RNS) species in response to muscle contractions. The concentration and species of ROS/RNS generated can depend on the age and fitness of the individual, muscle fibre type and the intensity of the muscle contractions. ROS/RNS generate unique signaling cascades that are not only essential in skeletal muscle contraction and adaptation but also play a role in a wide array of cell processes including cell proliferation, protein synthesis/degradation, immune response and antioxidant defense. ROS/RNS generated by contractions are involved in a co-ordinated local response that is tightly controlled at all levels from generation to detoxification. This collection of original articles and reviews highlights investigations that measure different aspects of the redox response of skeletal muscle to aging and exercise.
Author: Robert C. Noland
Publisher:
ISBN:
Category : Cycling
Languages : en
Pages : 254
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Author:
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ISBN:
Category :
Languages : en
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Author: Krista R. Howarth
Publisher:
ISBN: 9780494360460
Category :
Languages : en
Pages :
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