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  • 1
    Electronic Resource
    Electronic Resource
    Metabolic type of muscles of the sheep III. Evolution with age and influence of sex (1982)
    Springer
    European journal of applied physiology 49 (1982), S. 197-208 
    Details
    ISSN: 1439-6327
    Keywords: Metabolic type ; Sheep muscle ; Age relationships ; Sex relationships ; Glycolytic enzymes ; LDH isoenzymes ; Mitochondrial enzymes ; ATPase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Myofibrillar ATPase activity (in the presence of Ca2+ and Mg2+), activities of various glycolytic and mitochondrial enzymes, and haemin iron, glycogen, ATP and lactic acid levels were determined in the heart and five skeletal muscles of the sheep as a function of age and sex. During growth from 2 to 13 months, ATPase activity remained stable whereas most mitochondrial and glycolytic activities tended to decrease, particularly betwen 2 and 6 months. The isoenzyme composition of lactic dehydrogenase evolued markedly, with in particular a rise in the percentage of M4. Haemin iron level rose from 6 months. These modifiations occurred in most of the skeletal muscles but rarely in the heart. Glycogen and ATP decreased progressively between 2 and 13 months. Overall, results indicated a regression of the metabolic differentiation among muscles between 2 and 13 months, particularly marked before 6 months. At 3 and 7 months, sex had practically no influence on the enzyme activities studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02334068
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Metabolic types of muscle in the sheep: I. Myosin ATPase, gloycolytic, and mitochondrial enzyme activities (1981)
    Springer
    European journal of applied physiology 46 (1981), S. 347-358 
    Details
    ISSN: 1439-6327
    Keywords: Metabolic type ; Sheep muscle ; Glycolytic enzymes ; Mitochondrial enzymes ; ATPase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The metabolic characteristics of 12 skeletal muscles of the sheep were studied. Glycolytic activities (hexokinase, glycogen synthetase I and D, phosphorylase a and b, phosphofructokinase) were measured. Myofibrillar ATPase activity was evaluated. Oxygen consumption, respiratory control and carnitine palmity1 transferase, isocitrate dehydrogenase, succinate dehydrogenase and cytochrome oxidase activities were measured in isolated mitochondria. Three metabolic types could be distinguished; (1) essentially oxidative slow twitch muscles, typified by the supraspinatus and infraspinatus, having low ATPase activity, (2) fast twitch red muscles, typified by the longissimus dorsi and the semimembranosus, having a higher ATPase activity and both high oxidative and high glycolytic activity, and (3) essentially glycolytic fast twitch muscles, typified by the tensor fascia lata and the semitendinosus, having the highest ATPase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00422122
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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