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EFFECTS OF ACUTE HYPERTHERMIA ON POLYRIBOSOMES, IN VIVO PROTEIN SYNTHESIS AND ORNITHINE DECARBOXYLASE ACTIVITY IN THE NEONATAL RAT BRAIN

Noemi Millan

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

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Larry L. Murdock,

Larry L. Murdock

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

Department of Entomology, Purdue University, LaFayette, IN, USA.

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Ruth Bleier,

Ruth Bleier

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

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Frank L. Siegel,

Corresponding Author

Frank L. Siegel

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

To whom requests for reprints should be addressed.Search for more papers by this author

Noemi Millan,

Noemi Millan

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

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Larry L. Murdock,

Larry L. Murdock

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

Department of Entomology, Purdue University, LaFayette, IN, USA.

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Ruth Bleier,

Ruth Bleier

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

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Frank L. Siegel,

Corresponding Author

Frank L. Siegel

Departments of Pediatrics, Neurophysiology and Physiological Chemistry, University of Wisconsin for Health Sciences, Madison, WI 53706, U.S.A.

To whom requests for reprints should be addressed.Search for more papers by this author

First published: February 1979

https://doi.org/10.1111/j.1471-4159.1979.tb00353.x

Citations: 31

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Abstract—

—Acute hyperthermia produces in situ disaggregation of brain polyribosomes in infant rats, as determined by electron microscopy. Protein synthesis is inhibited in infant, but not weanling, rat brain by 45 min of hyperthermia; this inhibition is reversed during a 2 h recovery period at normothermic conditions. Hepatic protein synthesis was inhibited less than that of brain. Acute hyperthermia also leads to a profound loss of ornithine decarboxylase activity in brain; during recovery the activity of this enzyme overshoots to values greater than those of normothermic control rats. This increase is blocked by cycloheximide administration. In testis, a tissue with high ornithine decarboxylase activity, enzyme activity was not affected by hyperthermia and recovery, indicating tissue specificity for these effects.

Abbreviations used:

PKU: phenylketonuria

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Volume32, Issue2

February 1979

Pages 311-317

EFFECTS OF ACUTE HYPERTHERMIA ON POLYRIBOSOMES, IN VIVO PROTEIN SYNTHESIS AND ORNITHINE DECARBOXYLASE ACTIVITY IN THE NEONATAL RAT BRAIN

Abstract—

Abbreviations used:

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References

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EFFECTS OF ACUTE HYPERTHERMIA ON POLYRIBOSOMES, IN VIVO PROTEIN SYNTHESIS AND ORNITHINE DECARBOXYLASE ACTIVITY IN THE NEONATAL RAT BRAIN

Abstract—

Abbreviations used:

REFERENCES

Citing Literature

References

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