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  1. Fulltext Electrophoretic protein profiles in seminal plasma and sperm: a comparative study of Bali and Wagyu Bulls
    Maulana T, Hendrawan PA, Sutikno S, Anwar P, Ulum MF, Priyanto R, et al.
    Open Vet J, 2025 May;15(5):2021-2029.
    PMID: 40557106 DOI: 10.5455/OVJ.2025.v15.i5.18
    BACKGROUND: Seminal plasma and sperm play vital roles in fertility because they contain various proteins that influence sperm quality and function.

    AIM: This study aimed to compare the protein profiles of seminal plasma and sperm in Bali and Wagyu cattle and evaluate their correlation with fresh semen quality.

    METHODS: The study was conducted at the Singosari National Artificial Insemination Center using 3 Bali and 3 Wagyu superior bulls aged 5-12 years. Sperm motility parameters were analyzed using computer-assisted sperm analysis (IVOS-Hamilton). Sperm were extracted using the PRO-PREPTM Protein Extraction Solution. Sperm and seminal plasma protein concentrations were measured using the BCA protein assay, and 1D SDS-PAGE was used to analyze protein profiles. The gels were stained with Coomassie Brilliant Blue to visualize protein bands.

    RESULTS: Comparative analysis of semen characteristics, motility parameters, and kinematic parameters between Wagyu and Bali bulls revealed no significant differences. The seminal plasma protein concentrations in Bali bulls and Wagyu did not show a statistically significant difference. The sperm protein concentration in Bali bulls was significantly higher compared to Wagyu. Seminal plasma analysis of Bali bulls showed a diverse protein profile and Wagyu semen plasma had fewer bands, reflecting breed-specific differences. In contrast, sperm analysis of Bali bulls and Wagyu consistently showed heavy protein bands on sperm function and viability.

    CONCLUSION: Bali bulls showed greater variation in spermatozoa protein than Wagyu, with protein differences at molecular weights of 60-63 kDa, 35 kDa, and 18-20 kDa. In addition, a positive correlation was found between the number of motile spermatozoa and the number of straws per ejaculate.

    Matched MeSH terms: Seminal Plasma Proteins*
  2. Two-dimensional polyacrylamide gel electrophoresis of Bali bull (Bos javanicus) seminal plasma proteins and their relationship with semen quality
    Sarsaifi K, Haron AW, Vejayan J, Yusoff R, Hani H, Omar MA, et al.
    Theriogenology, 2015 Oct 1;84(6):956-68.
    PMID: 26119476 DOI: 10.1016/j.theriogenology.2015.05.035
    The present study evaluated the relationship between Bali bull (Bos javanicus) seminal plasma proteins and different semen quality parameters. Semen samples from 10 mature Bali bulls were evaluated for conventional semen parameters (general motility, viability, and normal morphology), sperm functionality (acrosome reaction, sperm penetration rate, sperm penetration index), sperm kinetics (computer-assisted semen analysis parameters such as sperm velocity), and sperm morphology (acrosome and membrane integrity). Frozen-thawed semen with higher sperm motility, viability, acrosome integrity, and membrane integrity (P < 0.05) are consistently higher in acrosome reaction and sperm penetration assay. Three bulls showed the highest, four bulls displayed the medium, and the remaining three bulls showed the lowest for all sperm parameters and SPA. The proteome maps of seminal plasma from high-quality and low-quality Bali bulls were also established. Seminal plasma of both high-quality and low-quality Bali bulls was subjected to two-dimensional SDS-PAGE with isoelectric point ranged from 3 to 10 and molecular weight from 10 to 250 kDa. Approximately 116 spots were detected with Blue Silver stain, and of these spots, 29 were selected and identified by MALDI-TOF/TOF-MS/MS. A majority of the proteins visualized in the seminal plasma two-dimensional maps was successfully identified. An essential group of the identified spots represented binder of sperm 1 (BSP1), clusterin, spermadhesin, tissue inhibitor of metalloproteinases 2 (TIMP-2), and phospholipase A2 (PLA2). Other proteins found in high abundance included seminal ribonuclease, serum albumin, cationic trypsin, and peptide similar to β2 microglobulin. Thus, a reference map of Bali bull seminal plasma proteins has been generated for the very first time and can be used to relate protein pattern changes to physiopathologic events that may influence Bali bull reproductive performance.
    Matched MeSH terms: Seminal Plasma Proteins
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