In vitro metabolic effects of proteolytic digests of bovine growth hormone in adipose tissue

Proteolytic digests of bovine growth hormone (BGH) prepared by controlled tryptic (TBGH) or papain (PBGH) digestion have in vitro metabolic properties which are qualitatively indistinguishable from native BGH preparations when evaluated by their ability to effect glucose- 14C uptake, its oxidation t...

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Veröffentlicht in:Metabolism, clinical and experimental clinical and experimental, 1969-11, Vol.18 (11), p.895-900
1. Verfasser: Swislocki, Norbert I.
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description Proteolytic digests of bovine growth hormone (BGH) prepared by controlled tryptic (TBGH) or papain (PBGH) digestion have in vitro metabolic properties which are qualitatively indistinguishable from native BGH preparations when evaluated by their ability to effect glucose- 14C uptake, its oxidation to CO 2 and incorporation in lipid, glycerol release, and histidine incorporation into protein of adipose tissue obtained from hypophysectomized rats. Chromatographic fractions of TBGH vary as to their relative potencies in stimulating these responses, both with respect to each other and with respect to the total TBGH digest. One fraction of TBGH formed from BGH by the proteolysis of 2–3 peptide bonds, possesses all the qualitative metabolic effects in vitro while exhibiting a moderate loss in potency both in vitro and in growth-promoting activity. Fractions of PBGH had activities similar to the PBGH digest.
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subjects Adipose Tissue - metabolism
Amino Acids - metabolism
Animals
Carbon Isotopes
Cattle
Chromatography
Glucose - metabolism
Glycerides - metabolism
Glycerol - metabolism
Growth Hormone - pharmacology
Histidine - metabolism
In Vitro Techniques
Lipids - biosynthesis
Male
Oxidation-Reduction
Papain - metabolism
Peptide Hydrolases - metabolism
Protein Biosynthesis
Rats
Trypsin - metabolism
title In vitro metabolic effects of proteolytic digests of bovine growth hormone in adipose tissue
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