Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines
Objective: To assess the effect of L-carnitine supplementation during in vitro oocyte maturation and in vitro culture process of bovine oocytes. Methods: L-carnitine (3.8 mM) was added to maturation medium and the effect was assessed in the quality (Experiment 1) and in the cleavage and 4-cells stag...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2019-01-01
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| Series: | Asian Pacific Journal of Reproduction |
| Subjects: | |
| Online Access: | http://www.apjr.net/article.asp?issn=2305-0500;year=2019;volume=8;issue=6;spage=289;epage=296;aulast=Carrillo-Gonzalez |
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| author | Diego F Carrillo-Gonzalez Nélida Rodríguez-Osorio Charles R Long Neil A Vásquez-Araque Juan G Maldonado-Estrada |
| author_facet | Diego F Carrillo-Gonzalez Nélida Rodríguez-Osorio Charles R Long Neil A Vásquez-Araque Juan G Maldonado-Estrada |
| author_sort | Diego F Carrillo-Gonzalez |
| collection | DOAJ |
| description | Objective: To assess the effect of L-carnitine supplementation during in vitro oocyte maturation and in vitro culture process of bovine oocytes.
Methods: L-carnitine (3.8 mM) was added to maturation medium and the effect was assessed in the quality (Experiment 1) and in the cleavage and 4-cells stage (Experiment 2). Besides, the effect of L-carnitine addition on maturation medium (3.8 mM) and culture medium (1.5 mM) on embryo rate production was assessed. In Experiment 1, bovine oocytes from abattoir were randomly separated into two groups (the control group and L-carnitine group) for in vitro maturation. Matured oocytes were examined for cumulus cells expansion as an indicator of maturation, and the content of the mitochondrial activity, the presence of lipid droplets, the reduced glutathione, and the reactive oxygen species were measured by using specific fluorochromes. In Experiment 2, oocytes were matured as performed in Experiment 1, afterward fertilized and cultured until day 3, and cleavage rate and 4-cells stage rate were determinated. In Experiment 3, in vitro maturation and fertilization were done as performed in Experiment 2, but at day 3 of culture, each group of embryos was separated into two new groups, and L-carnitine (1.5 mM) was added in culture media until day 8. The cleavage and embryo development rate were determined on the basis with the oocytes put on maturation. Hatching rate was calculated from cleaved embryos.
Results: The cumulus expansion rate at grade III and mitochondrial activity were significantly higher in the L-carnitine group in comparison with the control group (P <0.05). However, the content from the other variables tested did not significantly differ from the control group. Furthermore, the cleavage rate and 4-cells stage rate were similar in both groups (P >0.05). In addition, cleavage and the proportion of embryo development and hatching rate were similar for all groups (P >0.05).
Received 30 March 2019 Revision 10 May 2019 Accepted 18 July 2019 Available online 7 November 2019
Antioxidants Culture supplement Embryo development Lipid droplets Maturation Mitochondria
Conclusions: L-carnitine as a supplement in culture media improves the cumulus expansion and increases the mitochondrial activity during in vitro maturation process but has no apparent effect on the cleavage and development of bovine embryos. Further investigations of L-carnitine addition on in vitro culture are needed to test their effect on embryo quality. |
| first_indexed | 2024-12-23T20:59:28Z |
| format | Article |
| id | doaj.art-06652e12409648fc92406dc4fb58fd6f |
| institution | Directory Open Access Journal |
| issn | 2305-0500 2305-0519 |
| language | English |
| last_indexed | 2024-12-23T20:59:28Z |
| publishDate | 2019-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Asian Pacific Journal of Reproduction |
| spelling | doaj.art-06652e12409648fc92406dc4fb58fd6f2022-12-21T17:31:25ZengWolters Kluwer Medknow PublicationsAsian Pacific Journal of Reproduction2305-05002305-05192019-01-018628929610.4103/2305-0500.270107Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovinesDiego F Carrillo-GonzalezNélida Rodríguez-OsorioCharles R LongNeil A Vásquez-AraqueJuan G Maldonado-EstradaObjective: To assess the effect of L-carnitine supplementation during in vitro oocyte maturation and in vitro culture process of bovine oocytes. Methods: L-carnitine (3.8 mM) was added to maturation medium and the effect was assessed in the quality (Experiment 1) and in the cleavage and 4-cells stage (Experiment 2). Besides, the effect of L-carnitine addition on maturation medium (3.8 mM) and culture medium (1.5 mM) on embryo rate production was assessed. In Experiment 1, bovine oocytes from abattoir were randomly separated into two groups (the control group and L-carnitine group) for in vitro maturation. Matured oocytes were examined for cumulus cells expansion as an indicator of maturation, and the content of the mitochondrial activity, the presence of lipid droplets, the reduced glutathione, and the reactive oxygen species were measured by using specific fluorochromes. In Experiment 2, oocytes were matured as performed in Experiment 1, afterward fertilized and cultured until day 3, and cleavage rate and 4-cells stage rate were determinated. In Experiment 3, in vitro maturation and fertilization were done as performed in Experiment 2, but at day 3 of culture, each group of embryos was separated into two new groups, and L-carnitine (1.5 mM) was added in culture media until day 8. The cleavage and embryo development rate were determined on the basis with the oocytes put on maturation. Hatching rate was calculated from cleaved embryos. Results: The cumulus expansion rate at grade III and mitochondrial activity were significantly higher in the L-carnitine group in comparison with the control group (P <0.05). However, the content from the other variables tested did not significantly differ from the control group. Furthermore, the cleavage rate and 4-cells stage rate were similar in both groups (P >0.05). In addition, cleavage and the proportion of embryo development and hatching rate were similar for all groups (P >0.05). Received 30 March 2019 Revision 10 May 2019 Accepted 18 July 2019 Available online 7 November 2019 Antioxidants Culture supplement Embryo development Lipid droplets Maturation Mitochondria Conclusions: L-carnitine as a supplement in culture media improves the cumulus expansion and increases the mitochondrial activity during in vitro maturation process but has no apparent effect on the cleavage and development of bovine embryos. Further investigations of L-carnitine addition on in vitro culture are needed to test their effect on embryo quality.http://www.apjr.net/article.asp?issn=2305-0500;year=2019;volume=8;issue=6;spage=289;epage=296;aulast=Carrillo-Gonzalezantioxidantsculture supplementembryo developmentlipid dropletsmaturationmitochondria |
| spellingShingle | Diego F Carrillo-Gonzalez Nélida Rodríguez-Osorio Charles R Long Neil A Vásquez-Araque Juan G Maldonado-Estrada Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines Asian Pacific Journal of Reproduction antioxidants culture supplement embryo development lipid droplets maturation mitochondria |
| title | Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines |
| title_full | Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines |
| title_fullStr | Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines |
| title_full_unstemmed | Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines |
| title_short | Effect of L-carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines |
| title_sort | effect of l carnitine supplementation during in vitro maturation and in vitro culture on oocyte quality and embryonic development rate of bovines |
| topic | antioxidants culture supplement embryo development lipid droplets maturation mitochondria |
| url | http://www.apjr.net/article.asp?issn=2305-0500;year=2019;volume=8;issue=6;spage=289;epage=296;aulast=Carrillo-Gonzalez |
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