ArticlePloS one2024
The antioxidant betulinic acid enhances porcine oocyte maturation through Nrf2/Keap1 signaling pathway modulation.
Article in PloS one, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Epigallocatechin Gallate From Tea Delays Oocyte Aging After Ovulation in Mice.Food science & nutrition · 2026Article
- Supplementation of lupeol during in vitro maturation improves preimplantation embryonic development in pigs.Veterinary and animal science · 2026Article
- Effects of Moderately Reduced Dietary Net Energy on Growth Performance, Meat Quality and Intestinal Barrier Function in Growing Pigs.Veterinary sciences · 2026Article
- Effect of Low-Temperature Plasma on Porcine Oocytes In Vitro Primary Culture.Antioxidants (Basel, Switzerland) · 2026Article
- Effect of Melatonin and Epigallocatechin-3-Gallate Combination on In Vitro Maturation of Mouse Oocytes.International journal of molecular sciences · 2026Article
- Betulinic Acid Suppresses UBE2T Expression via MAPK/ERK Inhibition to Block FANCI and FANCD2 Monoubiquitination in Glioblastoma.Journal of cellular and molecular medicine · 2026Article
- Indole-3-propionic acid supplementation during in vitro maturation improves in vitro production of porcine embryos.BMC veterinary research · 2025Article
- Mitochondrial dysfunction in oocytes: implications for fertility and ageing.Journal of ovarian research · 2025Review
- IGF-1 promotes trophectoderm cell proliferation of porcine embryos by activating the Wnt/β-catenin pathway.Cell communication and signaling : CCS · 2025Article
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9 authors.
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Abstract
During in vitro maturation, excess levels of reactive oxygen species (ROS) are a major cause of developmental defects in embryos. Betulinic acid (BA) is a naturally produced antioxidant in white birch bark. Recent studies have shown that BA exhibits antioxidant properties in various cells through the activation of antioxidant genes. Therefore, we investigated the effect of BA treatment on porcine oocytes and its underlying mechanism during oocyte maturation. Treatment with 0.1 μM BA significantly increased the proportion of MII oocytes compared with controls, and BA-treated oocytes had significantly higher development rates, trophectoderm cell numbers, and cell survival rates than controls. These results demonstrate that BA treatment improved the developmental competence of oocytes. Following BA treatment, oocytes exhibited reduced ROS levels and elevated glutathione (GSH) levels, accompanied by the enhanced expression of antioxidant genes, compared with control oocytes. To evaluate the antioxidant effects of BA, oocytes were exposed to H2O2, a potent ROS activator. Impaired nuclear maturation, ROS levels, and GSH levels induced in oocytes by H2O2 exposure was restored by BA treatment. As these antioxidant genes are regulated by the Nrf2/Keap1 signaling pathway, which is involved in antioxidant responses, we applied the Nrf2 inhibitor brusatol to investigate the effects of BA on this pathway. The negative effects of brusatol on meiotic maturation and oocyte quality, including levels of ROS, GSH, and antioxidant-related gene expression, were mitigated by BA treatment. Our results suggested that BA plays an effective role as an antioxidant in porcine oocyte maturation through adjusting the Nrf2/Keap1 signaling pathway. This finding provides valuable insights into the mechanisms governing oocyte maturation and embryonic development.
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