Maintenance of protein synthesis in hearts of diabetic animals

D. E. Rannels; L. S. Jefferson; Å C. Hjalmarson; E. B. Wolpert; H. E. Morgan

doi:10.1016/0006-291X(70)90909-5

Maintenance of protein synthesis in hearts of diabetic animals

D. E. Rannels, L. S. Jefferson, Å C. Hjalmarson, E. B. Wolpert, H. E. Morgan

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Skeletal muscle of diabetic animals contained increased numbers of ribosomal subunits and decreased polysomes. However, numbers of polysomes and subunits in heart muscle 5 diabetic rats were the same as controls. Incorporation of¹⁴C-phenylalanine into protein of diabetic hearts occurred at the control rate. When control hearts were perfused, in vitro, with medium containing glucose and normal plasma levels of amino acids, polysomes decreased and subunits increased. These changes were prevented by addition of either insulin or palmitate suggesting that these factors facilitated peptide-chain initiation in heart muscle.

Original language	English (US)
Pages (from-to)	1110-1116
Number of pages	7
Journal	Biochemical and Biophysical Research Communications
Volume	40
Issue number	5
DOIs	https://doi.org/10.1016/0006-291X(70)90909-5
State	Published - Sep 10 1970

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Biophysics
Biochemistry
Molecular Biology
Cell Biology

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10.1016/0006-291X(70)90909-5

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title = "Maintenance of protein synthesis in hearts of diabetic animals",

abstract = "Skeletal muscle of diabetic animals contained increased numbers of ribosomal subunits and decreased polysomes. However, numbers of polysomes and subunits in heart muscle 5 diabetic rats were the same as controls. Incorporation of14C-phenylalanine into protein of diabetic hearts occurred at the control rate. When control hearts were perfused, in vitro, with medium containing glucose and normal plasma levels of amino acids, polysomes decreased and subunits increased. These changes were prevented by addition of either insulin or palmitate suggesting that these factors facilitated peptide-chain initiation in heart muscle.",

author = "Rannels, {D. E.} and Jefferson, {L. S.} and Hjalmarson, {{\AA} C.} and Wolpert, {E. B.} and Morgan, {H. E.}",

note = "Funding Information: *Supported by grants from The National Heart Institute and Life Insurance Medical Research Fund.",

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T1 - Maintenance of protein synthesis in hearts of diabetic animals

AU - Rannels, D. E.

AU - Jefferson, L. S.

AU - Hjalmarson, Å C.

AU - Wolpert, E. B.

AU - Morgan, H. E.

N1 - Funding Information: *Supported by grants from The National Heart Institute and Life Insurance Medical Research Fund.

PY - 1970/9/10

Y1 - 1970/9/10

N2 - Skeletal muscle of diabetic animals contained increased numbers of ribosomal subunits and decreased polysomes. However, numbers of polysomes and subunits in heart muscle 5 diabetic rats were the same as controls. Incorporation of14C-phenylalanine into protein of diabetic hearts occurred at the control rate. When control hearts were perfused, in vitro, with medium containing glucose and normal plasma levels of amino acids, polysomes decreased and subunits increased. These changes were prevented by addition of either insulin or palmitate suggesting that these factors facilitated peptide-chain initiation in heart muscle.

AB - Skeletal muscle of diabetic animals contained increased numbers of ribosomal subunits and decreased polysomes. However, numbers of polysomes and subunits in heart muscle 5 diabetic rats were the same as controls. Incorporation of14C-phenylalanine into protein of diabetic hearts occurred at the control rate. When control hearts were perfused, in vitro, with medium containing glucose and normal plasma levels of amino acids, polysomes decreased and subunits increased. These changes were prevented by addition of either insulin or palmitate suggesting that these factors facilitated peptide-chain initiation in heart muscle.

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Maintenance of protein synthesis in hearts of diabetic animals

Abstract

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