Increased adrenocortical response to adrenocorticotropic hormone (ACTH) in sport horses with equine glandular gastric disease (EGGD).

Scheidegger, Milena Deborah; Gerber, Vinzenz; Bruckmaier, Rupert; van der Kolk, Johannes Hermanus; Burger, Dominik; Ramseyer, Alessandra (2017). Increased adrenocortical response to adrenocorticotropic hormone (ACTH) in sport horses with equine glandular gastric disease (EGGD). Veterinary journal, 228, pp. 7-12. Elsevier 10.1016/j.tvjl.2017.09.002

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This study tested the hypothesis that adrenocortical function would be altered in horses with equine gastric ulcer syndrome (EGUS). Twenty-six sport horses competing at national or international levels in eventing (n=15) or endurance (n=11) were subjected to a gastroscopic examination and an adrenocorticotropic hormone (ACTH) stimulation test. Salivary cortisol concentrations were measured before (baseline) and after (30, 60, 90, 120 and 150min) IV ACTH injection (1μg/kg bodyweight). Within EGUS, two distinct diseases, equine squamous gastric disease (ESGD) and equine glandular gastric disease (EGGD), can be distinguished. ESGD was diagnosed in 8/11 (73%; 95% confidence intervals [95%CI], 43-92%) endurance horses and 5/15 (33%; 95% CI, 14-58%) eventing horses. EGGD was observed in 9/11 (82%; 95% CI, 53-96%) endurance horses and 9/15 (60%; 95% CI, 35-81%) eventing horses. The presence or severity of ESGD was unrelated to the presence or severity of EGGD. ACTH stimulation induced a larger increase in cortisol concentration in horses with moderate EGGD than in horses with mild EGGD. Cortisol concentration during the entire sampling period (total increase in cortisol concentration during the entire sampling period [dAUC], 31.1±6.4ng/mL) and the highest measured concentration at a single time point (maximal increase in cortisol concentration [dMAX], 10.3±2.3ng/mL) were increased (P=0.005 and P=0.038, respectively), indicating that horses with glandular gastric disease exhibited increased adrenocortical responses to ACTH stimulation. These results suggest that EGGD might be associated with an enhanced adrenocortical sensitivity. Further investigations are warranted to confirm the association between adrenocortical sensitivity and EGGD and to elucidate the pathophysiological mechanisms involved.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Equine Clinic
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Physiology
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)

UniBE Contributor:

Scheidegger, Milena Deborah; Gerber, Vinzenz; Bruckmaier, Rupert; van der Kolk, Johannes Hermanus; Burger, Dominik and Ramseyer, Alessandra

Subjects:

600 Technology > 630 Agriculture

ISSN:

1090-0233

Publisher:

Elsevier

Language:

English

Submitter:

Andrea Gassmann-Suter

Date Deposited:

10 Apr 2018 09:54

Last Modified:

10 Apr 2018 09:54

Publisher DOI:

10.1016/j.tvjl.2017.09.002

PubMed ID:

29153110

Uncontrolled Keywords:

ACTH Adrenal function Gastric ulcerations Horses Stress

BORIS DOI:

10.7892/boris.107733

URI:

https://boris.unibe.ch/id/eprint/107733

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