Supplementation of L-carnitine during in vitro maturation improves embryo development from less competent bovine oocytes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027162%3A_____%2F17%3AN0000002" target="_blank" >RIV/00027162:_____/17:N0000002 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0093691X1730300X?via%3Dihub" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0093691X1730300X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.theriogenology.2017.06.025" target="_blank" >10.1016/j.theriogenology.2017.06.025</a>

Result language

angličtina

Original language name

Supplementation of L-carnitine during in vitro maturation improves embryo development from less competent bovine oocytes

Original language description

The present study was designed to define the impact of l-carnitine, supplemented during maturation, on bovine oocytes with different meiotic competence in terms of their IVF outcomes. Meiotically more competent (MMC) and less competent (MLC) oocytes were obtained separately from differently sized follicles at selected phases of folliculogenesis. The oocytes were matured with or without l-carnitine, fertilized and cultured to the blastocyst stage. The oocytes were examined for nuclear maturation, mitochondrial cluster formation, lipid consumption, fertilization and embryo development. The proportion of oocytes at metaphase II was significantly higher in the l-carnitine-treated MMC than that in the l-carnitine-treated MLC oocytes. However in comparison with the untreated controls, the proportion of MII oocytes with mitochondrial clusters was significantly higher only in the l-carnitine-treated MLC oocytes, which also showed a significantly lower mean lipid content. The l-carnitine-treated MLC oocytes showed significantly higher fertilization and syngamy rates than the untreated MLC oocytes. On the other hand, in the l-carnitine-treated MMC oocytes, the fertilization rate was similar to that of the untreated controls and the syngamy rate was significantly delayed. Although no significant differences in cleavage on Day 2 were found among all oocyte categories, l-carnitine treatment resulted in a significantly higher blastocyst yield in the MLC oocytes on Day 7 and Day 8 and a significantly higher proportion of expanded blastocysts in relation to the total number of blastocysts in MMC oocytes on Day 8. It can be concluded that l-carnitine supplementation during maturation improves the development of bovine embryos from meiotically less competent oocytes and accelerates blastocyst formation from more competent oocytes.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GI - Farm animal breeding and farm animal pedigree breeding

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Theriogenology

ISSN

0093-691X

e-ISSN

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Volume of the periodical

102

Issue of the periodical within the volume

OCT

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

16-22

UT code for WoS article

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EID of the result in the Scopus database

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