The effect of geographic location, breed, and pituitary dysfunction on seasonal adrenocorticotropin and α-melanocyte-stimulating hormone plasma concentrations in horses

Journal of Veterinary Internal Medicine

Volumn 25, Issue 4, 2011, Pages 872-881

  McFarlane, D ^a   Paradis, M R ^b   Zimmel, D ^c   Sykes, B ^d   Brorsen, B W ^a   Sanchez, A ^b   Vainio, K ^e  

^a OKLAHOMA STATE UNIVERSITY   (United States)

^b TUFTS UNIVERSITY   (United States)

^c University of Florida College of Veterinary Medicine   (United States)

^d ESTONIAN UNIVERSITY OF LIFE SCIENCES   (Estonia)

^e Hyvinkaan Hevossairaala   (Finland)

Author keywords

Biorhythm; Equine Cushing's disease; Photoperiod; Pituitary pars intermedia dysfunction

Indexed keywords

ALPHA INTERMEDIN; CORTICOTROPIN;

ANIMAL; ARTICLE; BLOOD; COMPARATIVE STUDY; FEMALE; FINLAND; HORSE; HYPOPHYSIS INTERMEDIATE LOBE; MALE; PATHOPHYSIOLOGY; REGRESSION ANALYSIS; SEASON; UNITED STATES;

ADRENOCORTICOTROPIC HORMONE; ALPHA-MSH; ANIMALS; FEMALE; FINLAND; FLORIDA; HORSES; MALE; MASSACHUSETTS; PITUITARY GLAND, INTERMEDIATE; REGRESSION ANALYSIS; SEASONS;

ANIMALIA; EQUIDAE;

EID: 79960561604     PISSN: 08916640     EISSN: 19391676     Source Type: Journal    
DOI: 10.1111/j.1939-1676.2011.0745.x     Document Type: Article

References (19)

1. Schott HC. Pituitary pars intermedia dysfunction: Equine Cushing's disease. Vet Clin North Am Equine Pract 2002;18:237-270.
2. Brosnahan MM, Paradis MR. Demographic and clinical characteristics of geriatric horses: 467 cases (1989-1999). J Am Vet Med Assoc 2003;223:93-98.
3. McGowan CM, McGowan TW. Update on aged horse health, management and welfare. Montreal, Canada: Proceedings of American College of Veterinary Internal Medicine Forum; 2009:178-180.
4. Frank N, Andrews FM, Sommardahl CS, et al. Evaluation of the combined dexamethasone suppression/thyrotropin-releasing hormone stimulation test for detection of pars intermedia pituitary adenomas in horses. J Vet Intern Med 2006;20:987-993.
5. McFarlane D, Donaldson MT, McDonnell SM, et al. Effects of season and sample handling on measurement of plasma alpha-melanocyte-stimulating hormone concentrations in horses and ponies. Am J Vet Res 2004;65:1463-1468.
6. Donaldson MT, McDonnell SM, Schanbacher BJ, et al. Variation in plasma adrenocorticotropic hormone concentration and dexamethasone suppression test results with season, age, and sex in healthy ponies and horses. J Vet Intern Med 2005;19:217-222.
7. Logan A, Weatherhead B. Photoperiodic dependence of seasonal changes in pituitary content of melanocyte-stimulating hormone. Neuroendocrinology 1980;30:309-312.
8. Lincoln GA, Baker BI. Seasonal and photoperiod-induced changes in the secretion of alpha-melanocyte-stimulating hormone in Soay sheep: Temporal relationships with changes in beta-endorphin, prolactin, follicle-stimulating hormone, activity of the gonads and growth of wool and horns. J Endocrinol 1995;144:471-481.
9. Lincoln GA, Rhind SM, Pompolo S, et al. Hypothalamic control of photoperiod-induced cycles in food intake, body weight, and metabolic hormones in rams. Am J Physiol Regul Integr Comp Physiol 2001;281:R76-R90.
10. Lincoln GA, Richardson M. Photo-neuroendocrine control of seasonal cycles in body weight, pelage growth and reproduction: Lessons from the HPD sheep model. Comp Biochem Physiol C Pharmacol Toxicol Endocrinol 1998;119:283-294.
11. Schuhler S, Horan TL, Hastings MH, et al. Feeding and behavioural effects of central administration of the melanocortin 3/4-R antagonist SHU9119 in obese and lean Siberian hamsters. Behav Brain Res 2004;152:177-185.
12. Beech J, Boston RC, McFarlane D, et al. Evaluation of plasma ACTH, alpha-melanocyte-stimulating hormone, and insulin concentrations during various photoperiods in clinically normal horses and ponies and those with pituitary pars intermedia dysfunction. J Am Vet Med Assoc 2009;235:715-722.
13. Couetil L, Paradis MR, Knoll J. Plasma adrenocorticotropin concentration in healthy horses and in horses with clinical signs of hyperadrenocorticism. J Vet Intern Med 1996;10:1-6.
14. McFarlane D, Hale GM, Johnson EM, et al. Fecal egg counts after anthelmintic administration to aged horses and horses with pituitary pars intermedia dysfunction. J Am Vet Med Assoc 2010;236:330-334.
15. Silverin B, Wingfield J, Stokkan KA, et al. Ambient temperature effects on photo induced gonadal cycles and hormonal secretion patterns in Great Tits from three different breeding latitudes. Horm Behav 2008;54:60-68.
16. Donaldson MT, McFarlane D, Jorgensen AJ, et al. Correlation between plasma alpha-melanocyte-stimulating hormone concentration and body mass index in healthy horses. Am J Vet Res 2004;65:1469-1473.
17. Fazio E, Medica P, Aronica V, et al. Circulating beta-endorphin, adrenocorticotrophic hormone and cortisol levels of stallions before and after short road transport: Stress effect of different distances. Acta Vet Scand 2008;50:6.
18. de Graaf-Roelfsema E, Keizer HA, van Breda E, et al. Hormonal responses to acute exercise, training and overtraining. A review with emphasis on the horse. Vet Q 2007;29:82-101.
19. Hada T, Onaka T, Takahashi T, et al. Effects of novelty stress on neuroendocrine activities and running performance in thoroughbred horses. J Neuroendocrinol 2003;15:638-648.