Cytological identification and quantification of testicular cell types using fine needle aspiration in horses.

This research article is about a study conducted on fifteen stallions where their right testicles were evaluated using fine needle aspiration cytology (FNAC). The primary objective was to identify and quantify different types of testicular cells, which will benefit the diagnosis of male equine infertility.

Objective and Methodology of the Study

• The main purpose of this research study is to employ fine needle aspiration cytology (FNAC) technique for identifying and quantifying the cellular composition of stallion’s testicles. This approach can potentially aid in improved clinical diagnosis of male equine infertility.
• The technique of fine needle aspiration cytology was used to study the testicles of fifteen stallions of varying breeds and ages (3 to 11 years). The right testicle of each stallion was examined.

Findings of the Study

• The analysis revealed the presence of different types of spermatogenic cells, namely, spermatogonia, spermatocyte I, spermatocyte II, early spermatids, and late spermatids, with their respective percentages and standard deviation values.
• The study also quantified spermatozoal numbers using a spermatic index (SI = 31.5% +/- 8.5). In addition, Sertoli cells, crucial for the process of spermatogenesis, were quantified using a Sertoli cell index (SEI = 20.9% +/- 17.0).

Conclusion and Implications of the Study

• The study found out that it is relatively straightforward to identify the cellular types in the stallion’s testicles using FNAC, and no short-term adverse effects of the aspiration procedure were observed.
• These findings suggest that FNAC can be a viable technique to assist clinical diagnosis in the field of male equine infertility studies and treatment. By providing a detailed cellular makeup of the stallion’s testicles, the FNAC method could offer valuable diagnostic information to evaluate potential fertility disorders.