Effect of adipose tissue site, animal size, and fasting on lipolysis in bovine adipose tissue in vitro.
1. Lipolytic rates expressed as mumol glycerol released per mg protein increased with body weight in Holstein steers. 2. Lipolytic rates were greatest in both inner and outer back fat and lowest in omental, perirenal, and intermuscular fat depots. 3. Epinephrine stimulated overall glycerol release 3-5-fold. 4. Fasting resulted in greater basal lipolytic rates but epinephrine-stimulated rates tended to be greater for nonfasted steer adipose tissue. 5. Lipolytic activity in adipose tissue seems to increase with growth and fattening, and differences in lipolytic rates between various depots diminish with growth.
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Department of Animal Science, University of Wyoming, Laramie 82071.
Thornton
J H
JH
McGilliard
A D
AD
Beitz
D C
DC
D000273:Adipose Tissue / Q000378:metabolism*; D000818:Animals; D001835:Body Weight; D002417:Cattle; D004837:Epinephrine / Q000502:physiology; D005215:Fasting / Q000378:metabolism; D066298:In Vitro Techniques; D007700:Kinetics; D008066:Lipolysis / Q000502:physiology*; D008297:Male
D004837:Epinephrine