ArticleThe Journal of reproduction and development2024
Carnosine supplementation in cryopreservation solution improved frozen-thawed bovine embryo viability.
Article in The Journal of reproduction and development, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The Ameliorative Effects of Carnosine on the In Vitro Developmental Competence of Bovine Oocytes.Antioxidants (Basel, Switzerland) · 2026Article
- Vitrification of bovine oocytes and embryos: roadmaps to cryopreservation success.Animal reproduction · 2026Article
- Optimization of the Embryo Transfer Technique in the Korean Native Cattle: Effects of Key Influencing Factors.Animals : an open access journal from MDPI · 2026Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cryopreservation adversely affects embryo quality and viability in vitro. We investigated the effects of cryopreservation solutions supplemented with the antioxidant carnosine on frozen-thawed bovine embryo viability. Bovine blastocysts were produced in vitro and cryopreserved using slow freezing. The rates of re-expanded and hatched blastocysts in the 50 μg/ml carnosine-supplemented group at 4, 24, and 48 h after thawing were higher than those in the control (P < 0.05) group. In frozen-thawed embryos, cryopreservation solution supplemented with carnosine (50 μg/ml) significantly reduced reactive oxygen species (ROS) production (P < 0.05), decreased TUNEL-positive apoptotic cells (P < 0.05), and increased the mRNA expression of BCL2 (P < 0.05), an apoptosis suppressor gene. The expression of translocase of outer mitochondrial membrane 20 (TOMM20), which is involved in protein mitochondrial transport, in the carnosine (50 μg/ml)-treated embryos was significantly higher than that in the control group (P < 0.05). ATP production in frozen-thawed embryos in the 50 μg/ml carnosine-supplemented group was significantly higher than that in the control group (P < 0.05), however no significant difference in the total number of cells per embryo among the groups was observed. These results suggest that supplementing the cryopreservation solution with carnosine can improve the viability of frozen-thawed bovine embryos by reducing oxidative damage.
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