Abstract
The effect of electrical stimulation of the anterior hypothalamus of the guinea-pig upon follicle-stimulating hormone (FSH) and luteinizing hormone (LH) secretion during two phases of the oestrous cycle was examined and compared with the response to electrolytic or radio-frequency lesions placed in the same area. The secretion of LH was briefly increased by electrical stimulation of the hypothalamus, with a greater response occurring over days 7-8 (luteal phase) of the oestrous cycle than on days 13-14 (follicular phase). An equivalent rise in LH output was produced by placement of direct current (d.c.) lesions in the hypothalamus, whereas lesions made with radio-frequency current produced a small increase only on days 13-14. The secretion of FSH was not changed by any procedure.
Full text
PDF







Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Bishop W., Fawcett C. P., Krulich L., McCann S. M. Acute and chronic effects of hypothalamic lesions on the release of FSH, LH and prolactin in intact and castrated rats. Endocrinology. 1972 Sep;91(3):643–656. doi: 10.1210/endo-91-3-643. [DOI] [PubMed] [Google Scholar]
- Blatchley F. R., Donovan B. T., Ter Haar M. B. Plasma progesterone and gonadotrophin levels during the estrous cycle of the guinea pig. Biol Reprod. 1976 Aug;15(1):29–38. doi: 10.1095/biolreprod15.1.29. [DOI] [PubMed] [Google Scholar]
- Booth J. E., Donovan B. T. Implantation of oestrogen in the brain and the induction of ovulation in the guinea-pig. J Endocrinol. 1974 Jul;62(1):153–160. doi: 10.1677/joe.0.0620153. [DOI] [PubMed] [Google Scholar]
- Booth J. E., Donovan B. T. Stimulation of the hypothalamus and ovulation in the guinea-pig. J Physiol. 1974 Sep;241(2):373–388. doi: 10.1113/jphysiol.1974.sp010661. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Donovan B. T. Experimental lesions of the hypothalamus. A critical survey with particular reference to endocrine effects. Br Med Bull. 1966 Sep;22(3):249–253. doi: 10.1093/oxfordjournals.bmb.a070482. [DOI] [PubMed] [Google Scholar]
- Donovan B. T., Haar M. B., Parvizi N. Gonadotrophin secretion in the ovariectomized guinea-pig: effects of electrical stimulation of the hypothalamus and of LH-RH. J Physiol. 1977 Mar;265(3):597–613. doi: 10.1113/jphysiol.1977.sp011733. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Donovan B. T., ter Haar M. B. Acute effects of hypothalamic lesions upon gonadotrophin secretion in the ferret. J Endocrinol. 1981 Jun;89(3):329–336. doi: 10.1677/joe.0.0890329. [DOI] [PubMed] [Google Scholar]
- Donovan B. T., ter Haar M. B., Lockhart A. N., MacKinnon P. C., Mattock J. M., Peddie M. J. Changes in the concentration of luteinizing hormone in plasma during development in the guinea-pig. J Endocrinol. 1975 Mar;64(3):511–520. doi: 10.1677/joe.0.0640511. [DOI] [PubMed] [Google Scholar]
- Donovan B. T., ter Haar M. B., Lockhart A. N., Peddit M. J. Changes in the concentration of follicle-stimulating hormone in plasma during development in the guinea-pig. J Endocrinol. 1975 Mar;64(3):521–528. doi: 10.1677/joe.0.0640521. [DOI] [PubMed] [Google Scholar]
- EVERETT J. W. CENTRAL NEURAL CONTROL OF REPRODUCTIVE FUNCTIONS OF THE ADENOHYPOPHYSIS. Physiol Rev. 1964 Jul;44:373–431. doi: 10.1152/physrev.1964.44.3.373. [DOI] [PubMed] [Google Scholar]
- Harris G. W., Manabe Y., Ruf K. B. A study of the parameters of electrical stimulation of unmyelinated fibres in the pituitary stalk. J Physiol. 1969 Jul;203(1):67–81. doi: 10.1113/jphysiol.1969.sp008850. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kilpatrick M. J., Donovan B. T. Effect of anaesthesia on the negative feedback action of gonadal steroids on gonadotrophin secretion in the ovariectomized guinea-pig. J Endocrinol. 1981 Apr;89(1):167–177. doi: 10.1677/joe.0.0890167. [DOI] [PubMed] [Google Scholar]
- Pohl C. R., Knobil E. The role of the central nervous system in the control of ovarian function in higher primates. Annu Rev Physiol. 1982;44:583–593. doi: 10.1146/annurev.ph.44.030182.003055. [DOI] [PubMed] [Google Scholar]
- Quinn D. L. Hypothalamic mechanisms involved in the control of gonadotropic hormone secretion in the guinea pig: evidence of elevated brain thresholds to electrical stimulation in the medial preoptic-anterior hypothalamic region during "early" diestrus. Endocrinology. 1970 Aug;87(2):343–349. doi: 10.1210/endo-87-2-343. [DOI] [PubMed] [Google Scholar]
- Terasawa E., King M. K., Wiegand S. J., Bridson W. E., Goy R. W. Barbiturate anesthesia blocks the positive feedback effect of progesterone, but not of estrogen, on luteinizing hormone release in ovariectomized guinea pigs. Endocrinology. 1979 Mar;104(3):687–692. doi: 10.1210/endo-104-3-687. [DOI] [PubMed] [Google Scholar]
- ter Haar M. B. Luteinizing hormone responsiveness to luteinizing hormone releasing hormone in the adult guinea-pig: direct ovarian involvement. J Endocrinol. 1978 Jan;76(1):49–61. doi: 10.1677/joe.0.0760049. [DOI] [PubMed] [Google Scholar]
