Immunohistochemical Assessment of GDNF and Chromogranin A Expression in Erosive and Granulomatous Lesions in Glandular Region of Equine Stomach.

This research studied the occurrence of erosive and granulomatous lesions in the glandular region of horse’s stomachs, and how these are influenced by the presence of certain proteins. The study found that while glial cell line-derived neurotrophic factor doesn’t influence the development of these lesions, the increase of neuroendocrine cells does. The study also links the proliferation and control process of cells in the formation and healing of the lesion with heightened expressions of Ki67 and p53 proteins.

Study Overview

• The study examined 41 hybrid-native horses over a five-year period, including both stallions and mares. Of the horses examined, 65.85% were found to have lesions in the glandular region of their stomachs. These lesions could either be erosive or granulomatous or, in some cases, both.
• The research aimed to analyse the occurrence of these lesions based on varying variables such as the age and gender of the horses, and the time of sampling. The study found that none of these factors had a significant influence on the appearance of the lesions. However, parasites were found to be the primary reason for the formation of the lesions.

Protein Expression and Lesions

• One of the key findings from this study is the relationship between the expression of glial cell line-derived neurotrophic factor and these lesions. This protein was found to be absent in the lesions, whereas its presence was detected in normal stomach tissues.
• Additionally, Chromogranin A, a protein produced by neuroendocrine cells, was shown to have a significant relationship with the severity and depth of the lesions. Thus, as the lesions became more intense, there was increased expression of Chromogranin A.
• The study concludes that the absence of glial cell line-derived neurotrophic factor does not affect the pathogenesis of these gastric lesions. However, the heightened presence of gastric neuroendocrine cells can be linked to better lesion progression, which might inform future treatment strategies.

Additional Findings

• Other important proteins named in the study were Ki67 and p53. The researchers noticed an increased expression of these proteins in granulomatous lesions, suggesting that they are associated with cell proliferation and control, contributing to the formation and healing of the lesion.
• This finding provides a new perspective on understanding the mechanisms behind the formation and recovery of these stomach lesions in horses, and potentially opens doors for more targeted therapeutic approaches in the future.