The effect of intracerebroventricular infusion of leptin on the secretory activity of the somtotropic axis in fasted prepubertal lambs

Journal of Animal and Feed Sciences

Volumn 19, Issue 3, 2010, Pages 379-397

  Wojcik Gladysz A ^a   Wankowska M ^a   Misztal, T ^a   Szczepankiewicz, D ^b   Romanowicz, K ^a   Polkowska, J ^a  

^a KIELANOWSKI INSTITUTE OF ANIMAL PHYSIOLOGY AND NUTRITION   (Poland)

^b POZNA UNIVERSITY OF LIFE SCIENCES   (Poland)

Author keywords

Growth hormone; Leptin; Sheep; Somatostatin

Indexed keywords

OVIS ARIES;

EID: 78149432881     PISSN: 12301388     EISSN: None     Source Type: Journal    
DOI: 10.22358/jafs/66301/2010     Document Type: Article

References (30)

1. Baratta M., 2002. Leptin - from a signal of adiposity to a hormonal mediator in peripheral tissues. Med. Sci. Monit. 8, RA282-RA292
2. Baratta M., Saleri R., Mainardi G.L., Valle D., Giustina A., Tamanini C., 2002. Leptin regulates GH gene expression and secretion and nitric oxide production in pig pituitary cells. Endocrinology 143, 551-557
3. Barb C.R., Yan X., Azain M.J., Kraeling R.R., Rampacek G.B., Ramsay T.G., 1998. Recombinant porcine leptin reduces feed intake and stimulates growth hormone secretion in swine. Dornest. Anim. Endocrinol. 15, 77-86
4. Baskin D.G., Breininger J.F., Bonigut S., Miller M.A., 1999. Leptin binding in the arcuate nucleus is increased during fasting. Brain Res. 828, 154-158
5. Baskin D.G., Seeley R.J., Kujiper J.L., Lok S., Weigle D.S., Erickson J.C., Palmiter R.D., Schwartz M.W., 1998. Increased expression of mRNA for the long form of the leptin receptor in the hypothalamus is associated with leptin hypersensivity and fasting. Diabetes 47, 538-543
6. Brazeau P., Bohlen P., Esch F., Ling N., Wehrenberg W.B., Guillemin R., 1984. Growth hormonereleasing factor from ovine and caprine hypothalamus: isolation, sequence analysis and total synthesis. Biochem. Biophys. Res. Commun. 125, 601-614
7. Brazeau P., Vale W., Burgus R.., Ling N., Buthcher M., Rivier J., Guilleman R., 1973. Hypothalamic polypeptide that inhibits the secretion of immunoreactive pituitary growth hormone. Science 179, 77-79
8. Carro E., Senaris R., Considine R.V., Casanueva F.F., Dieguez C., 1997. Regulation of in vivo growth hormone secretion by leptin. Endocrinology 138, 2203-2206
9. Casanueva F.F., Dieguez C., 1999. Neuroendocrine regulation and action of leptin. Front. Neuroendocrinol. 20, 317-363
10. Casanueva F.F., Dieguez C., 2005. Leptin and ghrelin: what is the impact on pituitary function? Rev. Endocr. Metab. Disord. 6, 39-45
11. Cocchi D., De Gennaro Colonna V., Bagnasco M., Bonacci D., Müller E.E., 1999. Leptin regulates GH secretion in the rat by acting on GHRH and somatostatinergic functions. J. Endocrinol. 162, 95-99
12. Dubois M.P., 1971. Misé en évidence par immuno-fluorescence des cellules somatotropes et des cellules á prolactine dans l'hypophyse foetale des bovines. CR Acad. Sci. 272,433-435
13. Dyer C.J., Simmons J.M., Matteri R.L., Keisler D.H., 1997. Leptin receptor m RNA is expressed in ewe anterior pituitary and adipose tissues and is differentially expressed in hypothalamic regions of well-fed and feed-restricted ewes. Dornest. Anim. Endocrinol. 14, 119-128
14. Gladysz A., Krejci P., Simunek J., Polkowska J., 2001. Effects of central infusions of neuropeptide Y on the somatotrophic axis in sheep fed on two levels of protein. Acta Neurobiol. Exp. 61, 255-266
15. Hart I.C., Chadwick P.M.E., Coert A., James S., Simmons A.D., 1985. Effect of different growth hormone-releasing factors on the concentrations of growth hormone, insulin and metabolites in the plasma of sheep maintained in positive and negative energy balance. J. Endocrinol. 105, 113-119
16. Henry B.A., Goding J.W., Alexander W.S., Tilbrook A.J., Canny B.J., Dunshea F., Rao A., Mansell A., Clarke I.J., 1999. Central administration of leptin to ovariectomized ewes inhibits food intake without affecting the secretion of hormones from pituitary gland: evidence for a dissociation of effects on appetite and neuroendocrine function. Endocrinology 140, 1175-1182
17. Henry B.A., Goding J.W., Tilbrook A.J., Dunshea F., Clarke I.J., 2001. Intracerebroventricular infusion of leptin elevates the secretion of luteinizing hormone without affecting food intake in long-term food-restricted sheep, but increases growth hormone irrespective of bodyweight. J. Endocrinol. 168, 67-77
18. Iqbal J., Pompólo S., Considine R.V., Clarke I.J., 2000. Localization of leptin receptor-like immunoreactivity in the corticotropes, somatotropes and gonadotropes in the ovine anterior pituitary. Endocrinology 141, 1515-1520
19. Merriam G.R., Wachter K.W, 1982. Algorithms for the study of episodic hormone secretion. Amer. J. Physiol. 243, E310-E318
20. Morrison C.D., Daniel J.A., Holmberg B.J., Dijane J., Raver N., Gertler A., Keisler D.H., 2001. Central infusion of leptin into well-fed and undernourished ewe lambs; effects on feed intake and serum concentrations of growth hormone and luteinizing hormone. J. Endocrinol. 168, 317-324
21. Nagatani S., Zeng Y., Keisler D.H., Foster D.L., Jaffe C.A., 2000. Leptin regulates pulsatile luteinizing hormone and growth hormone secretion in the sheep. Endocrinology 141, 3965-3397
22. Polkowska J., Krejči P., Snochowski M., 1996. The long-term effect of low protein diet on the somatostatin hypothalamic neuronal system and the pituitary growth hormone cells in growing ewe. Exp. Clin. Endocrinol. 104, 59-66
23. Slaba J., Krejči P., Škarda J., Huybrechts L.M., Decuypere E., Hermann E., 1994. Plasma profiles of somatotropin and IGF-I in dairy cows following application of two preparations of recombinant bovine somatotropin in a sustained release vehicle. Physiol. Res. 43, 37-43
24. Stupnicki R., Kula E., 1982. Direct radioimmunoassay of progesterone in human plasma. Endokrinologie 80, 1-7
25. Tartaglia L., Dembski M., Weng X., et al., 1995. Identification and expression cloning of a leptin receptor, OB-R. Cell 83, 1263-1271
26. Thomas G.B., Mercer J.E., Karalis T., Rao A., Cummings J.T., Clarke I.J., 1990. Effect of restricted feeding on the concentrations of growth hormone (GH), gonadotropins, and prolactin (PRL) in plasma, and on the amounts of messenger ribonucleic acid for GH, gonadotropin subunits and PRL in the pituitary glands of adult ovariectomized ewes. Endocrinology 126, 1361-1367
27. Traczyk W., Przekop F., 1963. Methods of investigation of the function of the hypothalamus and hypophysis in chronic experiments in sheep. Acta. Physiol. Pol. 14, 217-226
28. Welento J., Szteyn S., Milart Z., 1969. Observations on the stereotaxic configuration of the hypothalamic nuclei in the sheep. Anat. Anz. 124, 1-27
29. Zhang Y., Proenca R., Maffei M., Barone M., Leopold L., Friedman J.M., 1994. Positional cloning of the mouse obese gene and its human homologue. Nature 372, 425-432
30. Zieba D.A., Amstalden M., Morton S., Gallino J.L., Edwards J. F., Harms P. G., Williams G.L., 2003. Effects of leptin on basal and GHRH-stimuIated GH secretion from the bovine adenohypophysis are dependent upon nutritional status. J. Endocrinol. 178, 83-89