Abstract
Since circulating hormone levels are able to modify some bichemical parameters in the pineal, it is of interest to determine if hormonal manipulations are able to prevent pineal-mediated short photoperiod-induced gonadal regression. Neither adrenalectomy nor thyroidectomy is able to alter short photoperiod-induced gonadal regression in male hamsters. Likewise, addition of excess thyroxine or cortisol, by biweekly implantation of hormone pellets, is unable to modify short photoperiod-induced gonadal regression. These results suggest that the pineal can remain physiologically active even in the face of major hormonal imbalances.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 319-324 |
| Number of pages | 6 |
| Journal | Neuroendocrinology Letters |
| Volume | 11 |
| Issue number | 6 |
| State | Published - Dec 1 1989 |
| Externally published | Yes |
ASJC Scopus subject areas
- Endocrinology, Diabetes and Metabolism
- Endocrinology
- Neurology
- Endocrine and Autonomic Systems
- Clinical Neurology
- Psychiatry and Mental health
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