Influence of bovine growth hormone and growth hormone-releasing factor on messenger RNA abundance of lipoprotein lipase and stearoyl-CoA desaturase in the bovine mammary gland and adipose tissue.

2000 ◽  
Vol 78 (2) ◽  
pp. 412 ◽  
Author(s):  
N S Beswick ◽  
J J Kennelly
Keyword(s):  
Growth Hormone ◽  
Adipose Tissue ◽  
Mammary Gland ◽  
Lipoprotein Lipase ◽  
Messenger Rna ◽  
Bovine Growth Hormone ◽  
Bovine Mammary Gland ◽  
Growth Hormone Releasing Factor ◽  
Stearoyl Coa Desaturase

scholarly journals Evidence for conservation of dietary lipid in the rat during lactation and the immediate period after removal of the litter. Decreased oxidation of oral [1-14C]triolein

1986 ◽  
Vol 239 (1) ◽  
pp. 233-236 ◽  
Author(s):  
C M Oller do Nascimento ◽  
D H Williamson
Keyword(s):  
Adipose Tissue ◽  
Mammary Gland ◽  
Lipoprotein Lipase ◽  
Relative Activity ◽  
Dietary Lipid ◽  
Litter Removal ◽  
Lactating Mammary Gland ◽  
14Co2 Production

Production of 14CO2 from an oral load of [1-14C]triolein was greatly decreased (70%) in lactating rats or immediately after (24-48 h) removal of the litter, compared with virgin rats. This decreased oxidation of dietary lipid was accompanied by accumulation of 14C-labelled lipid in lactating mammary gland or adipose tissue (after litter removal). No difference in 14CO2 production between lactating and virgin rats was observed when [1-14C]octanoate was administered. It is concluded that a major factor in this conservation of dietary triacylglycerol is the relative activity of lipoprotein lipase in the tissues.

Native and Recombinant Bovine Growth Hormone Antagonize Insulin Action in Cultured Bovine Adipose Tissue*

Endocrinology ◽  
1987 ◽  
Vol 121 (2) ◽  
pp. 699-703 ◽  
Author(s):  
TERRY D. ETHERTON ◽  
CHRISTINA M. EVOCK ◽  
RONALD S. KENSINGER
Keyword(s):  
Growth Hormone ◽  
Adipose Tissue ◽  
Insulin Action ◽  
Bovine Growth Hormone

A review of bovine growth hormone

1994 ◽  
Vol 74 (2) ◽  
pp. 167-201 ◽  
Author(s):  
Jeanne L. Burton ◽  
Brian W. McBride ◽  
Elliot Block ◽  
David R. Glimm ◽  
John J. Kennelly
Keyword(s):  
Growth Hormone ◽  
Mammary Gland ◽  
Growth Factor ◽  
Dairy Cows ◽  
Milk Production ◽  
Reproductive Efficiency ◽  
Bovine Growth Hormone ◽  
Insulin Like Growth Factor ◽  
Factor I ◽  
Exogenous Growth

Unprecedented numbers of technical papers, abstracts, and short communications have been published in the past decade regarding the effects of exogenous bovine growth hormone on milk production, health, and reproductive efficiency of treated dairy cows. In well-managed dairy herds, exogenous growth hormone increases milk production without altering normal variability in milk composition. This has held true regardless of dairy breed tested, geographical location studied, or feeding management system used. Also consistent across studies is the rapidity of the galactopoietic effect of administered bovine growth hormone, which arises from altered partitioning and use of post-absorptive nutrients and increased synthetic capacity of the mammary gland. Growth hormone and its associated peptide, insulin-like growth factor-I, are now known to provide chronic lipolytic, diabetogenic, and gluconeogenic signals to target tissues culminating in increased mammary gland availability of glucose and nonesterified fatty acids. Together with yet ill-defined effects on mammary secretory tissue, this homeorhetic control of metabolism elicited by exogenous growth hormone is so efficient that treated cows are not more susceptible to metabolic disorders than untreated cows. However, some studies have reported an increased frequency of mastitis in groups of treated cows. This has been attributed mainly to increased milk volume in the mammary glands of treated cows and no convincing data are available that show decreased mammary gland immunity as a result of growth hormone treatments. On the contrary, an expanding body of evidence implicates growth hormone as a key neuroendocrine factor that is required for immunological competence. Trends of decreased reproductive efficiency in cows treated with growth hormone have also been reported, but available data imply that this is probably an indirect effect via prolonged negative energy balance in cows treated in early lactation rather than a direct negative effect on estrous cycling via altered reproductive hormone profiles. The objectives of the present review are to bring into focus and summarize pertinent biological discoveries regarding the treatment of dairy cows with recombinant bovine growth hormone, and to explore areas where additional growth hormone research is needed or warranted. Key words: Growth hormone, somatotropin, dairy cows, insulin-like growth factor-I

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