Systemic leukopenia, evaluation of laminar leukocyte infiltration and laminar lesions in horses with naturally occurring colic syndrome.

The research investigates the link between systemic leukopenia, leukocyte infiltration in hoof laminar tissue, and laminar lesions in horses suffering from colic syndrome. Understanding this correlation could help in treating and preventing colic syndrome, a common and often deadly issue in horses.

Subject Groups and Method

• The study was conducted using a control group, a leukopenic group, and a non-leukopenic group. The control group consisted of six healthy horses, the leukopenic group comprised of seven horses with low leukocyte counts, and the non-leukopenic group contained 11 horses with normal leukocyte count ranges.
• The health of these groups was analyzed by observing and comparing the frequency and severity of laminar lesions and the extent of leukocyte infiltration in the hoof laminar tissues using immunohistochemistry, a technique that enables visualization of specific proteins in cells.

Results

• The study found that laminar lesions were present in both leukopenic and non-leukopenic groups, however, there was no significant difference in the severity of these lesions between the two groups.
• The leukopenic group demonstrated a higher level of leukocyte infiltration compared to both the control and non-leukopenic groups.
• Interestingly, horses with severe colic syndrome demonstrated considerable laminar lesions and increased leukocyte infiltration, regardless of their leukocyte count, but did not show clinical signs of laminitis — a painful, and often chronic, disease affecting the horse’s feet.

Conclusion and Implications

• There was a clear increase in leukocyte infiltration in hoof laminar tissue and the presence of laminar lesions in horses with colic syndrome regardless of their leukocyte count.
• The findings suggest that colic syndrome in horses could induce changes in hoof laminar tissue, which might be an important factor to consider in treatment and prevention strategies for horses suffering from colic syndrome.

The study is significant as it provides valuable insights into the potential link between systemic leukopenia and colic syndrome in horses. However, further research is needed to clarify the relationship and establish appropriate treatment methods.