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Published in: Journal of Assisted Reproduction and Genetics 4/2015

01-04-2015 | Gamete Biology

Effect of L-carnitine supplementation on maturation and early embryo development of immature mouse oocytes selected by brilliant cresyle blue staining

Authors: Zohreh Zare, Reza Masteri Farahani, Mohammad Salehi, Abbas Piryaei, Marefat Ghaffari Novin, Fatemeh Fadaei Fathabadi, Moslem Mohammadi, Maryam Dehghani-Mohammadabadi

Published in: Journal of Assisted Reproduction and Genetics | Issue 4/2015

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Abstract

Purpose

The present study was designed to investigate the effect of L-carnitine treatment during IVM on nuclear and cytoplasmic maturation of immature oocytes selected by Brilliant Cresyle Blue (BCB) staining, and their subsequent developmental competence.

Materials & methods

Compact cumulus-oocyte complexes (COCs) were collected from NMRI mice ovaries and stained with BCB staining. BCB+ (colored cytoplasm) oocytes were then cultured in tissue culture medium (TCM) 199 with 0.0, 0.3 and 0.6 mg/ml L-carnitine.

Results

The both L-carnitine concentrations significantly increased the intracellular glutathione (P < 0.001), nuclear maturation (P < 0.01) and expression levels of cyclin-dependent kinase1 (CDK1) (P < 0.05). Moreover, treated oocytes with 0.6 mg/ml L-carnitine showed increased (P < 0.05) expression of mitogen-activated protein kinase1 (MAPK1) mRNA. Also, adding L-carnitine (0.6 mg/ml) to IVM medium significantly increased the cleavage rate (P < 0.05). The blastocyst development rate (BDR) in the both L-carnitine treated groups was significantly higher (P < 0.001) than the control group. L-carnitine had no significant effect on total blastocyst cell numbers.

Conclusions

These data indicated that L-carnitine supplementation during IVM of immature BCB+ oocytes improved preimplantation developmental competence of oocytes after IVF, probably by accelerating cytoplasmic and nuclear maturation of oocytes. It may provide a novel approach to improving ART outcomes in infertile couples.
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Metadata
Title
Effect of L-carnitine supplementation on maturation and early embryo development of immature mouse oocytes selected by brilliant cresyle blue staining
Authors
Zohreh Zare
Reza Masteri Farahani
Mohammad Salehi
Abbas Piryaei
Marefat Ghaffari Novin
Fatemeh Fadaei Fathabadi
Moslem Mohammadi
Maryam Dehghani-Mohammadabadi
Publication date
01-04-2015
Publisher
Springer US
Published in
Journal of Assisted Reproduction and Genetics / Issue 4/2015
Print ISSN: 1058-0468
Electronic ISSN: 1573-7330
DOI
https://doi.org/10.1007/s10815-015-0430-5

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