Abstract
THE number of ova released at ovulation in rats varies within a narrow limit, usually between 10 and 15. Factors which maintain this relative constancy are not known. Several agents capable of inhibiting ovulation are known1,2, but apart from gonadotrophin injections there appears to be no way to increase the normal ovulation rate7. An agent capable of doing this might be useful in improving breeding potential of laboratory or farm animals, and provide a tool for the study of the neuroendocrine basis of superovulation. (Superovulation is defined as an increase in the ovulation rate beyond that found in the controls.) Exposure of mice3, rats4 and hamsters5 to X-rays has been found to increase ovulation rate and/or litter size. As radiomimetic agents6 duplicate several effects of X-rays, they might be expected to induce superovulation in rats. Only Cyclophosphamide (CPA) amongst those we tested had this effect.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Pincus, G., Control of Fertility (Academic Press, London and New York, 1965).
Kar, A. B., J. Sci. Ind. Res., 28, 45 (1969).
Russell, L. B., and Russell, W. L., Cold Spring Harbor Symp. Quant. Biol., 19, 50 (1954).
Hahn, E. W., and Ward, W. F., Science, 157, 956 (1967).
Hahn, E. W., Fed. Proc., 27, 739 (1968).
Grollman, A., and Grollman, E., Pharmacology and Therapeutics (seventh ed.), 670 (Lea and Febiger, Philadelphia, 1970).
Rowlands, I. W., and Parkes, A. S., in Physiology of Reproduction, 3, 86 (Little, Brown, Boston, 1966).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
RUSSELL, W., WALPOLE, A. & LABHSETWAR, A. Cyclophosphamide: Induction of Superovulation in Rats. Nature 241, 129–130 (1973). https://doi.org/10.1038/241129a0
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1038/241129a0
This article is cited by
-
Female germline stem cells: aging and anti-aging
Journal of Ovarian Research (2022)
-
The effect of the immune system on ovarian function and features of ovarian germline stem cells
SpringerPlus (2016)
-
Immunoregulation of follicular renewal, selection, POF, and menopause in vivo, vs. neo-oogenesis in vitro, POF and ovarian infertility treatment, and a clinical trial
Reproductive Biology and Endocrinology (2012)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.