Prolactin regulation of testosterone secretion and testes growth in DLS rams at the onset of seasonal testicular recrudescence

Reproduction

Volumn 139, Issue 1, 2010, Pages 197-207

  Sanford, L M ^a   Baker, S J ^a  

^a MCGILL UNIVERSITY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

BROMOCRIPTINE; FOLLITROPIN; GONADORELIN; LUTEINIZING HORMONE; LUTEINIZING HORMONE RECEPTOR; PROLACTIN; TESTOSTERONE;

ANIMAL EXPERIMENT; ANIMAL TISSUE; ARTICLE; CONTROLLED STUDY; FOLLITROPIN BLOOD LEVEL; FOLLITROPIN RELEASE; LUTEINIZING HORMONE BLOOD LEVEL; LUTEINIZING HORMONE RELEASE; MALE; NONHUMAN; PRIORITY JOURNAL; PROLACTIN BLOOD LEVEL; RAM (SHEEP); TESTIS DEVELOPMENT; TESTIS FUNCTION; TESTIS SIZE; TESTOSTERONE BLOOD LEVEL; TESTOSTERONE RELEASE;

ADAPTATION, PHYSIOLOGICAL; ANIMALS; BIOLOGICAL MARKERS; BROMOCRIPTINE; FOLLICLE STIMULATING HORMONE; GONADOTROPIN-RELEASING HORMONE; HORMONE ANTAGONISTS; LEYDIG CELLS; LUTEINIZING HORMONE; MALE; ORGAN SIZE; PHOTOPERIOD; PITUITARY GLAND; PROLACTIN; RECURRENCE; SCROTUM; SEASONS; SECRETORY RATE; SERTOLI CELLS; SHEEP, DOMESTIC; TESTIS; TESTOSTERONE; TIME FACTORS;

EID: 75149193163     PISSN: 14701626     EISSN: 17417899     Source Type: Journal    
DOI: 10.1530/REP-09-0180     Document Type: Article

References (64)

1. Barenton B & Pelletier J 1980 Prolactin, testicular growth and LH receptors in the ram following light and 2-Br-α-ergocryptine (CB-154) treatments. Biology of Reproduction 22 781-790.
2. Barenton B, Hochereau-de Reviers MT, Perreau C & Poirier J-C 1982 Effects of induced hypoprolactinemia in the ram: plasma gonadotrophin levels, LH and FSH receptors and histology of the testis. Reproduction, Nutrition, Development 22 621-630.
3. Bartke A 2004 Prolactin in the male: 25 years later. Journal of Andrology 25 661-666.
4. Bole-Feysot C, Goffin V, Edery M, Binart N & Kelly PA 1998 Prolactin (PRL), and its receptor: actions, signal transduction pathways and phenotypes observed in PRL receptor knockout mice. Endocrine Reviews 19 225-268.
5. Bremner WJ, Findlay JK, Lee VWK, de Kretser DM & Cumming IA 1980 Feedback effects of the testis on pituitary responsiveness to luteinizing hormone-releasing hormone infusions in the ram. Endocrinology 106 329-336.
6. Chandrashekar V & Bartke A 1988 Influence of endogenous prolactin on the luteinizing hormone stimulation of testicular steroidogenesis and the role of prolactin in adult male rats. Steroids 51 559-576.
7. Cheng KW, Simaraks S & Palmer WM 1981 Characterization of a radioimmunoassay for ovine-FSH utilizing an antibovine FSH serum. Journal of Reproduction and Fertility 61 115-121.
8. Cheung CY 1983 Prolactin suppresses luteinizing hormone secretion and pituitary responsiveness to luteinizing hormone-releasing hormone by a direct action at the anterior pituitary. Endocrinology 113 632-638.
9. Courot M & Ortavant R 1981 Endocrine control of spermatogenesis in the ram. Journal of Reproduction and Fertility Supplement 30 47-60.
10. Curlewis JD 1992 Seasonal prolactin secretion and its role in seasonal reproduction: a review. Reproduction, Fertility, and Development 4 1-23.
11. Curlewis JD & McNeilly AS 1991 Prolactin short-loop feedback and prolactin inhibition of luteinizing hormone secretion during the breeding season and seasonal anoestrus in the ewe. Neuroendocrinology 54 279-285.
12. Darbeïda H & Brudieux R 1980 Seasonal variations in plasma testosterone and dihydrotestosterone levels and in metabolic clearance rate of testosterone in rams in Algeria. Journal of Reproduction and Fertility 59 229-235.
13. Dombrowicz D, Sente B, Closset J & Hennen G 1992 Dose-dependent effects of human prolactin on the immature hypophysectomized rat testis. Endocrinology 130 695-700.
14. Evans NP, McNeilly JR & Webb R 1995 Effects of indirect selection for pituitary responsiveness to gonadotropin-releasing hormone on the storage and release of luteinizing hormone and follicle-stimulating hormone in prepubertal male lambs. Biology of Reproduction 53 237-243.
15. Freeman ME, Kanyicska B, Lerant A & Nagy G 2000 Prolactin: structure, function, and regulation of secretion. Physiological Reviews 80 1523-1631.
16. Gregory SJ, Townsend J, McNeilly AS & Tortonese DJ 2004 Effects of prolactin on the luteinizing hormone response to gonadotropin- releasing hormone in primary pituitary cell cultures during the ovine annual reproductive cycle. Biology of Reproduction 70 1299-1305.
17. Hochereau-de Reviers MT, Perreau C & Lincoln GA 1985 Photoperiodic variations of somatic and germ cell populations in the Soay ram testis. Journal of Reproduction and Fertility 74 329-334.
18. Hochereau-de Reviers MT, Perreau C, Pisselet C & Pelletier J 1992 Effect of a 2-month light cycle regimen on testicular parameters of adult Ile-de-France rams. Microscopy Research and Technique 20 268-273.
19. Jabbour HN & Lincoln GA 1999 Prolactin receptor expression in the testis of the ram: localization, functional activation and the influence of gonadotrophins. Molecular and Cellular Endocrinology 148 151-161.
20. Karsch FJ, Cummins JT, Thomas GB & Clarke IJ 1987 Steroid feedback inhibition of pulsatile secretion of gonadotropin-releasing hormone in the ewe. Biology of Reproduction 36 1207-1218.
21. Kilgour RJ, Courot M, Pisselet C, Dubois MP & Sairam MR 1994 Inhibition of FSH but not LH affects spermatogenesis in the mature ram. Animal Reproduction Science 34 253-264.
22. Klemcke HG, Bartke A & Borer KT 1984 Regulation of testicular prolactin and luteinizing hormone receptors in golden hamsters. Endocrinology 114 594-603.
23. Knight TW 1977 Methods for the indirect estimation of testes weight and sperm numbers in Merino and Romney rams. New Zealand Journal of Agricultural Research 20 291-296.
24. Koike K, Miyake A, Aono T, Sakumoto T, Ohmichi M, Yamaguchi M & Tanizawa O 1991 Effect of prolactin on the secretion of hypothalamic GnRH and pituitary gonadotropins. Hormone Research 35 (Supplement 1) 5-12.
25. Lejeune H, Habert R & Saez JM 1998 Origin, proliferation and differentiation of Leydig cells. Journal of Molecular Endocrinology 20 1-25.
26. Lincoln GA 1990 Correlation with changes in horns and pelage, but not reproduction, of seasonal cycles in the secretion of prolactin in rams of wild, feral and domesticated breeds of sheep. Journal of Reproduction and Fertility Abstract Series 90 285-296.
27. Lincoln GA & Tortonese DJ 1997 Prolactin: an impotent inhibitor of gonadotrophin secretion in sheep? Journal of Reproduction and Fertility 19 15.
28. Lincoln GA & Tortonese DJ 1999 Prolactin replacement fails to inhibit reactivation of gonadotropin secretion in rams treated with melatonin under long days. Biology of Reproduction 60 602-610.
29. Lincoln GA, Lincoln CE & McNeilly AS 1990 Seasonal cycles in the blood plasma concentration of FSH, inhibin and testosterone, and testicular size in rams of wild, feral and domesticated breeds of sheep. Journal of Reproduction and Fertility 88 623-633.
30. Lincoln GA, Clarke IJ & Sweeney T 1996 'Hamster-like' cycles in testicular size in the absence of gonadotrophin secretion in HPD rams exposed to long-term changes in photoperiod and treatment with melatonin. Journal of Neuroendocrinology 8 855-866.
31. Lincoln GA, Townsend J & Jabbour HN 2001 Prolactin actions in the sheep testis: a test of the priming hypothesis. Biology of Reproduction 65 936-943.
32. Manna PR, El-Hefnawy T, Kero J & Huhtaniemi IT 2001 Biphasic action of prolactin in the regulation of murine Leydig cell tumor cell functions. Endocrinology 142 308-318.
33. McPherson GA 1983 A practical computer-based approach to the analysis of radioligand binding experiments. Computer Programs in Biomedicine 17 107-114.
34. Mendis-Handagama SMLC 1997 Luteinizing hormone on Leydig cell structure and function. Histology and Histopathology 12 869-882.
35. Misztal T, Romanowicz K, Wankowska M, Wojcik-Gladysz A & Polkowska J 2005 Does prolactin influence the hypothalamo-pituitary GnRH-LH system in preovulatory-phase ewes? Reproductive Biology 5 31-49.
36. Motulsky HJ 1999 Analyzing Data with GraphPad Prism, San Diego CA: GraphPad Software Inc.
37. Munson PJ & Rodbard D 1980 LIGAND: a versatile computerized approach for characterization of ligand-binding systems. Analytical Biochemistry 107 220-239.
38. Niswender GD, Reichert LE Jr, Midgely AR Jr & Nalbandov AV 1969 Radioimmunoassay for bovine and ovine LH. Endocrinology 84 1166-1173.
39. Pakarinen P, Niemimaa T, Huhtaniemi IT & Warren DW 1994 Transcriptional and translational regulation of LH, prolactin and their testicular receptors by hCG and bromocriptine treatments in adult and neonatal rats. Molecular and Cellular Endocrinology 101 37-47.
40. Price CA, Cooke GM & Sanford LM 2000 Influence of season and low-level oestradiol immunoneutralization on episodic LH and testosterone secretion and testicular steroidogenic enzymes and steroidogenic acute regulatory protein in the adult ram. Journal of Reproduction and Fertility 118 251-262.
41. Purvis K, Clausen OPF, Brandtzaeg P & Hansson V 1978 LH receptors and Leydig cell responsiveness to hCG in vitro. Archives of Andrology 1 299-310.
42. Regisford EGC & Katz LS 1993 Effects of bromocriptine-induced hypoprolactinaemia on gonadotrophin secretion and testicular function of rams (Ovis aries) during two seasons. Journal of Reproduction and Fertility 99 529-537.
43. Regisford EGC & Katz LS 1994 Testicular LH receptor numbers are dependent on serum prolactin (PRL) concentrations in the ram (Ovis aries). Biology of Reproduction 50 (Supplement 1) 112.
44. Rhim T-J, Kuehl D & Jackson GL 1993 Seasonal changes in the relationships between secretion of gonadotropin-releasing hormone, luteinizing hormone, and testosterone in the ram. Biology of Reproduction 48 197-204.
45. Romanowicz K, Misztal T & Barcikowski B 2004 The effects of intracerebroventricular infusion of prolactin on luteinizing hormone, testosterone and growth hormone secretion in male sheep. Animal Reproduction Science 81 261-271.
46. Sanford LM 1985 Evidence that estrogen regulation of testosterone secretion in adult rams is mediated by both indirect (gonadotropin dependent) and direct (gonadotropin independent) means. Journal of Andrology 6 306-314.
47. Sanford LM 1987 Luteinizing hormone release in intact and castrate rams is altered with immunoneutralization of endogenous estradiol. Canadian Journal of Physiology and Pharmacology 65 1442-1447.
48. Sanford LM 1989 Increases in testosterone secretion in adult rams with immunoneutralization of endogenous estradiol occur in the absence of increases in pulsatile LH release or testicular LH receptors. Acta Endocrinologica (Copenhagen) 120 180-186.
49. Sanford LM & Baker SJ 1990 Enhanced testosterone secretion in adult rams after establishment of a high-frequency, low-amplitude pattern of LH pulses in the nonbreeding season occurs without changes in the number or binding affinity of testicular LH receptors. Acta Endocrinologica (Copenhagen) 122 55-61.
50. Sanford LM & Dickson KA 2008 Prolactin regulation of testicular development and sexual behavior in yearling Suffolk rams. Small Ruminant Research 77 1-10.
51. Sanford LM & Ponzilius K-H 1989 The pattern of LH release in the adult ram influences the testicular steroidogenic response to individual LH pulses and is regulated by testosterone negative feedback. Journal of Andrology 10 1-7.
52. Sanford LM & Robaire B 1990 Interaction of season and estradiol in the regulation of gonadotropin secretion in the ram. Canadian Journal of Physiology and Pharmacology 68 150-156.
53. Sanford LM, Beaton DB, Howland BE & Palmer WM 1978 Photoperiod-induced changes in LH, FSH, prolactin and testosterone secretion in the ram. Canadian Journal of Animal Science 58 123-128.
54. Sanford LM, Voglmayr JK, Vale WW & Robaire B 1993 Photoperiod-mediated increases in serum concentrations of inhibin, follicle-stimulating hormone, and luteinizing hormone are accentuated in adult shortened-scrotum rams without corresponding decreases in testosterone and estradiol. Biology of Reproduction 49 365-373.
55. Sanford LM, Price CA, Leggee DG, Baker SJ & Yarney TA 2002 Role of FSH, numbers of FSH receptors and testosterone in the regulation of inhibin secretion during the seasonal testicular cycle of adult rams. Reproduction 123 269-280.
56. SAS 1989 SAS/STAT User's Guide Version 6, Fourth Edition, Cary NC: Statistical Analysis System Institute Inc.
57. Schanbacher BD, Pelletier J & Hochereau-de-Reviers MT 1987 Follicle stimulating hormone, luteinizing hormone and testicular Leydig cell responses to estradiol immunization in Ile-de-France rams. Journal of Andrology 8 97-102.
58. Takase M, Tsutsui K & Kawashima S 1990 Effects of prolactin and bromocryptine on the regulation of testicular luteinizing hormone receptors in mice. Journal of Experimental Zoology 256 200-209.
59. Tortonese DJ, Brooks J, Ingleton P, McNeilly JR & McNeilly AS 1996 Prolactin receptor gene expression and specific translation of the signal in the ovine anterior hypothalamus and pituitary gonadotrophs. Proceedings of the 10th International Congress of Endocrinology, San Francisco, CA, p 303 (Abstract P1-673).
60. Tortonese DJ, Brooks J, Ingleton PM & McNeilly AS 1998 Detection of prolactin receptor gene expression in the sheep pituitary gland and visualization of the specific translation of the signal in gonadotrophs. Endocrinology 139 5215-5223.
61. Voogt JL, de Greef WJ, Visser TJ, de Koning J, Vreeburg JT & Weber RF 1987 In vivo release of dopamine, luteinizing hormone-releasing hormone and thyrotropin-releasing hormone in male rats bearing a prolactin-secreting tumor. Neuroendocrinology 46 110-116.
62. Weiss-Messer E, Ber R & Barkey RJ 1996 Prolactin and MA-10 Leydig cell steroidogenesis: biphasic effects of prolactin and signal transduction. Endocrinology 137 5509-5518.
63. Wilson PR & Lapwood KR 1978 Studies of hormone secretion in Romney rams: luteinizing hormone, testosterone and prolactin plasma profiles, LH/testosterone interrelationships and the influence of seasons. Theriogenology 9 279-294.
64. Yarney TA, Sanford LM & Sairam MR 1988 Sheep testicular gonadotropin binding sites: characterization and changes with surgical shortening of the scrotum. Canadian Journal of Physiology and Pharmacology 66 1319-1327.