Equine Cushing’s disease.

The research article focuses on Cushing’s disease in horses which is a result of the abnormal pituitary gland secretion of specific hormones.

Overview of Equine Cushing’s Disease

• The research paper broadly discusses Cushing’s disease in horses which is largely associated with abnormal growths, known as adenomata, in the pars intermedia of the pituitary gland. This disease arises due to excessive secretion of hormones like adrenocorticotropin (ACTH) and other proopiomelanocortin (POMC) peptides.
• The secretion of peptides from the pars intermedia is regulated by dopamine. Therefore, substances like pergolide or bromocriptine that function as dopamine agonists can help to alleviate the clinical symptoms of Cushing’s disease in horses.

Endocrinological Abnormalities in Equine Cushing’s Disease

• There are several endocrinal irregularities relevant to both the onset and diagnosis of Cushing’s disease. These include hyperadrenocorticism which is the overproduction of adrenal hormones, issues with insulin resistance in peripheral areas, and excessive secretion of POMC-peptides from the pituitary gland.

Insights from Carbohydrate Metabolism Studies

• The researchers mentioned initial studies on carbohydrate metabolism that convey the potential usefulness of quantifying insulin activity as a way to predict the course of equine Cushing’s disease.
• It was also suggested that if secondary diabetes mellitus emerges as a resulting condition in horses with Cushing’s disease, insulin therapy may be considered as a treatment in some cases.