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Circadian variation of serum testosterone in the adult male rat with a late morning acrophase

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  • Endocrinologica
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Summary

Serum testosterone concentrations were measured in adult male Sprague-Dawley rats. A significant circadian testosterone rhythm (p<0.01) was found with peak values at 10.00 and 13.00 h.

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Authors and Affiliations

  1. Toxicology Research Laboratory, Veterans Administration Hospital, 54th Street and 48th Avenue South, Minneapolis, 55417, Minnesota, USA

    M. J. Wilson,  J. M. McMillin, U. S. Seal & K. Ahmed

  2. Department of Laboratory Medicine and Pathology, University of Minnesota, 55455, Minneapolis, USA

    M. J. Wilson,  J. M. McMillin, U. S. Seal & K. Ahmed

  3. VA Hospital, Bldg. 49, Rm. 207, 55417, Minneapolis, Minn., USA

    J. M. McMillin

Authors
  1. M. J. Wilson
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  2. J. M. McMillin
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  3. U. S. Seal
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  4. K. Ahmed
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Additional information

Supported in part by NIH, NCI Grant No. CA 15062 and NIH, NIAMDD Grant No. 5 RO1 AM11376.

The authors would like to acknowledge the excellent technical assistance of Ms.Kris Strom.

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Wilson, M.J., McMillin, J.M., Seal, U.S. et al. Circadian variation of serum testosterone in the adult male rat with a late morning acrophase. Experientia 32, 944–945 (1976). https://doi.org/10.1007/BF02003784

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  • DOI: https://doi.org/10.1007/BF02003784

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