Simultaneous detection of equine sperm subpopulations with different phenomes using a novel staining technique

NILENDU  PAUL; THIRUMALA RAO  TALLURI; KAMARAJ  ELANGO; KATHAN  RAVAL; PRADEEP  NAG; YASH  PAL; LEGHA RAM  AVTAR; T K  BHATTACHARYA; ARUMUGAM  KUMARESAN

doi:10.56093/ijans.v95i4.166560

Authors

NILENDU PAUL Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru – 560030, Karnataka India
THIRUMALA RAO TALLURI Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru – 560030, Karnataka India
KAMARAJ ELANGO Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru – 560030, Karnataka India
KATHAN RAVAL Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru – 560030, Karnataka India
PRADEEP NAG Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru – 560030, Karnataka India
YASH PAL ICAR-National Research Centre on Equines, Hisar - 125001, Haryana
LEGHA RAM AVTAR ICAR-National Research Centre on Equines, Hisar - 125001, Haryana
T K BHATTACHARYA ICAR-National Research Centre on Equines, Hisar - 125001, Haryana
ARUMUGAM KUMARESAN Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru – 560030, Karnataka India

https://doi.org/10.56093/ijans.v95i4.166560

Keywords:

Fluorescent microscopy, Mitochondria, Reactive oxygen species, Spermatozoa, Stallion, Subpopulation

Abstract

Nowadays, there is an increased demand for liquid and frozen semen of stallion as the breeding registries have allowed artificial inseminations. Therefore, it is important to ensure the quality of stallion semen because it will be used for inseminating a large number of mares. Traditionally, various dyes were being used for assessing individual sperm functional parameters which is laborious, time consuming and require large quantity of samples. Recently, fluorescent dye-based sperm quality assessment techniques are replacing the conventional staining procedures and are proving to be more accurate, reliable and time efficient. In the current study, we developed fluorescent dye based triple staining methods for simultaneous detection of sperm vital parameters i.e viability, acrosome integrity, mitochondrial membrane potential and mitochondrial reactive oxygen species. Cryopreserved semen from 6 stallions were used for the current study. Through the standardized triple staining methods, we identified various sperm subpopulations (seven sub populations in FITC-PNA+MitoSox+Hoechst 33258 and four subpopulations in FITC- PNA+JC-1+Hoechst 33258), all of which cannot be assessed using single or dual staining techniques. We therefore conclude, that triple staining can be useful for simultaneous assessment of important sperm functional parameters of stallion spermatozoa in a cost and time effective manner.

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