Phenotypic flexibility in passerine birds: Seasonal variation of aerobic enzyme activities in skeletal muscle

2011 ◽  
Vol 36 (7) ◽  
pp. 430-436 ◽  
Author(s):  
Eric T. Liknes ◽  
David L. Swanson
Keyword(s):  
Skeletal Muscle ◽  
Seasonal Variation ◽  
Enzyme Activities ◽  
Phenotypic Flexibility ◽  
Passerine Birds

Phenotypic flexibility of skeletal muscle and heart masses and expression of myostatin and tolloid-like proteinases in migrating passerine birds

2015 ◽  
Vol 185 (3) ◽  
pp. 333-342 ◽  
Author(s):  
Marisa O. King ◽  
Yufeng Zhang ◽  
Travis Carter ◽  
Jake Johnson ◽  
Erin Harmon ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Phenotypic Flexibility ◽  
Passerine Birds

Effects of Chronic Ethanol Abuse on Structure and Enzyme Activities of Skeletal Muscle in Man

1975 ◽  
Vol 35 (6) ◽  
pp. 601-607 ◽  
Author(s):  
K. -H. Kiessling ◽  
L. Pilström ◽  
A. -C. Bylund ◽  
K. Piehl ◽  
B. Saltin
Keyword(s):  
Skeletal Muscle ◽  
Enzyme Activities ◽  
Chronic Ethanol ◽  
Ethanol Abuse

Enzyme studies of skeletal muscle in mice with hereditary muscular dystrophy

1963 ◽  
Vol 205 (5) ◽  
pp. 897-901 ◽  
Author(s):  
Marilyn W. McCaman
Keyword(s):  
Skeletal Muscle ◽  
Muscular Dystrophy ◽  
Glutathione Reductase ◽  
Enzyme Activities ◽  
Lactic Dehydrogenase ◽  
Normal Muscle ◽  
Dystrophic Muscle ◽  
Nerve Section ◽  
Mouse Muscle ◽  
Dystrophic Mouse

The activities of 20 enzymes in normal, heterozygous, and dystrophic mouse muscle were studied by means of quantitative microchemical methods. Enzyme activities in normal and heterozygous muscle were essentially the same. In dystrophic muscle glucose-6-P dehydrogenase, 6-P-gluconic dehydrogenase, glutathione reductase, peptidase, ß-glucuronidase, and glucokinase activities were significantly higher than in normal muscle, while α-glycero-P dehydrogenase and lactic dehydrogenase activities were significantly lower. The pattern of enzyme activities found in normal gastrocnemius denervated by nerve section was strikingly similar to that in dystrophic muscle.

scholarly journals Anaerobic and Aerobic Enzyme Activities in Human Skeletal Muscle from Children and Adults

2005 ◽  
Vol 57 (3) ◽  
pp. 331-335 ◽  
Author(s):  
Jan J Kaczor ◽  
Wieslaw Ziolkowski ◽  
Jerzy Popinigis ◽  
Mark A Tarnopolsky
Keyword(s):  
Skeletal Muscle ◽  
Enzyme Activities ◽  
Human Skeletal Muscle

Seasonal Variation in the Physiological Response of Atlantic Cod (Gadus morhua) to Low Salinity

1992 ◽  
Vol 49 (6) ◽  
pp. 1149-1156 ◽  
Author(s):  
J.-D. Dutil ◽  
J. Munro ◽  
C. Audet ◽  
M. Besner
Keyword(s):  
Skeletal Muscle ◽  
Seasonal Variation ◽  
Osmotic Pressure ◽  
Principal Components ◽  
Physiological Response ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Low Salinity ◽  
Natural Photoperiod ◽  
Highly Correlated

Plasma Na+, Cl−, K+, osmotic pressure, Cortisol, glucose, and protein, blood hemoglobin and hematocrit, and water content of skeletal muscle were measured at regular intervals during a 28-d period following the transfer of Atlantic cod (Gadus morhua) to waters of 7, 14, 21, and 28‰ (control) salinity. These experiments were repeated four times at 3-mo intervals under natural photoperiod and temperatures (0–10 °C). Exposure to 7‰ salinity caused large decreases in plasma Na+ in winter (25 mmol/L over 14 d) and in spring (32 mmol/L over 7 d) when the lowest value for the year was reached (156 mmol/L). Transfer to 14 and 21‰ salinity resulted in a slight decrease (maximum 4%) in plasma Na+ which was much smaller than the seasonal variation (14%) observed in controls. Hydration of skeletal muscle occurred only at 7‰ (2.3% maximum), but these changes were small compared with the seasonal variation (3.9%) observed in the controls. Principal components and clustering analyses showed that all ionic and osmotic variables measured were highly correlated while being only weakly associated with the condition or reproductive status of the fish. There were no indications that acclimation to low salinity was stressful for cod.

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