Chronic enteritis associated with the malabsorption and protein-losing enteropathy in the horse.

This research paper documents two cases of chronic enteritis in horses, followed by malabsorption and protein-losing enteropathy. Despite treatment, the cause of the condition remained unidentified.

Identifying the Condition

• The paper discusses two cases where horses were suffering from chronic granulomatous enteritis. This condition was characterized by loss of weight and lower than normal levels of protein in the blood (hypoproteinemia). Interestingly, both of these horses were noted to have normally formed feces, which doesn’t always occur in such cases.

Malabsorption & Protein Loss

• It was observed that one of the horses was not properly absorbing carbohydrates and lipids while also experiencing significant gastrointestinal protein loss. This issue of malabsorption and protein loss is a clear indication of an underlying issue in the gastrointestinal tract.

Potential Treatment and Recuperation

• One horse was treated symptomatically, which means that instead of targeting a specific cause, the treatment sought to improve general health and mitigate symptoms. It was noted that this horse gained 108 kilos following treatment, which indicates that the treatment had a positive effect on the overall health and wellbeing of the horse. However, without identifying the specific underlying cause, ensuring long-term health is challenging.

Pathological Findings

• Autopsies of the gastrointestinal tract revealed damage and partial to total loss of villi. These are small, finger-like structures that increase the surface area of the intestine for efficient absorption of nutrients.
• There were also observable instances of a transmural mononuclear leukocytosis, that refers to an increased number of white blood cells (likely lymphocytes and histiocytes) in the wall of the gut. This is typically evidence of an inflammatory response.

Lack of Determinable Cause

• The significant and somewhat frustrating finding was that despite these observations, the researchers were unable to identify the definitive cause of the chronic enteritis in both cases. This lack of a specific diagnosis emphasizes the need for further research to better understand and treat this condition in horses. The unforeseen sources of such diseases can also pose major challenges to treatment and pharmaceutical interventions.