Effect of serum on the in vitro maturation of canine oocytes

1999 ◽  
Vol 11 (8) ◽  
pp. 387 ◽  
Author(s):  
Takeshige Otoi ◽  
Maya Fujii ◽  
Aya Ooka ◽  
Masaki Tanaka ◽  
Tatsuyuki Suzuki

The meiotic competence of canine oocytes cultured for 72 h in medium supplemented with three different concentrations (5, 10 and 20%) of anoestrous, oestrous or metoestrous bitch serum, or with 0.3% bovine serum albumin (BSA), was examined. The oestrous serum supplement had a positive effect on the resumption of meiosis, compared with the other supplements (P<0.05). The number of oocytes that reached metaphase I (MI) and metaphase II (MII) was significantly higher (P<0.05) with the oestrous serum supplement than with the anoestrous serum supplement. There were no significant differences among the three different concentrations in each serum type with respect to the proportion of oocytes that completed meiosis (MI to MII). The number of oocytes that resumed meiosis in the 10% oestrous serum supplement was significantly higher (P<0.05) than those of each concentration of the anoestrous and metoestrous serum supplements, and of the 0.3% BSA supplement. Moreover, a higher number of oocytes reached MII in the presence of the 10% oestrous serum supplement than with the 10% anoestrous serum supplement. These results suggest that supplementation of the culture medium with 10% oestrous serum is the optimal treatment for in vitro maturation of canine oocytes.

2012 ◽  
Vol 41 (1) ◽  
pp. 6-12
Author(s):  
MAMY Khandoker ◽  
MMT Reza ◽  
LY Asad ◽  
S Saha ◽  
AS Apu ◽  
...  

The present research was undertaken to explore the maturation of buffalo oocytes using bovine follicular fluid (BFF) and bovine serum albumin (BSA), as well as subsequent fertilization using cattle spermatozoa. The cumulus oocyte complexes (COCs) were collected by aspiration of slaughterhouse buffalo ovaries. Maturation was performed in TCM 199 supplemented with 10% BFF, 5% BSA or without supplementation (control). The COCs were fertilized in Brackett and Oliphant (BO) medium using capacitated fresh cattle spermatozoa. It was observed that the percentage of COCs reached to M-II stages were 40.78±3.84, 65.74±2.39 and 67.52±0.85; normal fertilization (formation of 2 pronuclei) were 23.28±3.00, 29.30±0.73 and 30.52±1.21 for control, 10% BFF and 5% BSA supplementation, respectively. The supplementation of BFF (10%) and BSA (5%) were given similar results on maturation and increased significantly (p<0.05) than that of the control. It was observed that cattle spermatozoa were fertilized by the buffalo oocytes and the fertilization rate was 23.28% to 30.52% in BFA and BSA supplemented media, respectively. It can be concluded that buffalo oocytes might be fertilized using capacitated cattle spermatozoa and both 10% BFF and 5% BSA could be supplemented in maturation media to enhance the maturation rate as well as fertilization of buffalo oocytes.http://dx.doi.org/10.3329/bjas.v41i1.11969


2018 ◽  
Vol 22 ◽  
pp. 257-261 ◽  
Author(s):  
S. I. Kovtun ◽  
A. B. Zyuzyun ◽  
O. V. Shcherbak ◽  
P. A. Trotskiy

Aim. Investigated effect nanomaterial of highly dispersed ultra fine silica (UFS) by carbohydrate – sucrose (UFS/sucrose) on the effectiveness of meiotic maturation cows oocytes in vitro. Methods. The fresh and frozen – thawed cow oocyte-cumulus complex (OCC) was divided into four groups: three experimental in which the cultivation was carried out in a medium containing of 0, 1; 0, 01 and 0,001 % UFS/sucrose and control without adding nanomaterial. Results. It was concluded that the addition of UFS/sucrose in 0.001 % concentration is effective for elevation level of oocytes maturation and provides reception of 76,8% oocytes that induced the metaphase II of meiosis. Adding carbohydrate – sucrose (UFS/sucrose) in 0.001 % concentration to the culture medium frozen – thawed cow generative cells, make positive effect on in vitro fertilization and provide embryos quantity enhancement to 33.3 %. Conclusions. Addition of UFS/sucrose in 0.001 % concentration to the culture medium have increase effect and promote level in vitro maturation of cows oocytes rising to 76.8 %. Usage of UFS/sucrose in 0.001 % concentration as part of in vitro culture medium for cows oocyte-cumulus complex conduce rising quantity of cattle embryos to 33.3 % after in vitro fecundation frozen – thawed and maturation oocytes. Keywords: oocytes, in vitro culture, embryos, nanomaterial, ultra fine silica (UFS).


2015 ◽  
Vol 82 (4) ◽  
pp. 315-320 ◽  
Author(s):  
Lee D. Spate ◽  
Alana Brown ◽  
Bethany K. Redel ◽  
Kristin M. Whitworth ◽  
Randall S. Prather

2016 ◽  
Vol 28 (11) ◽  
pp. 1721 ◽  
Author(s):  
Maite del Collado ◽  
Naiara Z. Saraiva ◽  
Flavia L. Lopes ◽  
Roberta C. Gaspar ◽  
Luciana C. Padilha ◽  
...  

Proper oocyte maturation is crucial for subsequent embryo development; however, oocyte mitochondrial and lipid-droplet behaviour are still poorly understood. Although excessive lipid accumulation during in vitro production (IVP) of bovine embryos has been linked with impaired cryotolerance, lipid oxidation is essential for adequate energy supply. Fetal bovine serum (FBS) and bovine serum albumin (BSA) are supplements used during IVP, containing high and low lipid content, respectively. This study aimed to understand how these supplements influence oocyte mitochondrial and lipid behaviour during in vitro maturation (IVM) in comparison to in vivo maturation, as well as their influence on development rates and embryo lipid accumulation during IVP. We demonstrate that only in vivo-matured oocytes maintained correlation between lipid content and active mitochondria. IVM media containing FBS increased total lipid content 18-fold and resulted in higher lipid accumulation in oocytes when compared with media with BSA. IVM using a lower FBS concentration combined with BSA resulted in satisfactory maturation and embryo development and also reduced lipid accumulation in blastocysts. In conclusion, IVM causes changes in mitochondrial and lipid dynamics, which may have negative effects on oocyte development rates and embryo lipid accumulation. Moreover, decreasing FBS concentrations during IVM may reduce embryo lipid accumulation without affecting production rates.


1981 ◽  
Vol 96 (4) ◽  
pp. 546-551 ◽  
Author(s):  
S. K. Roy ◽  
Jayasree Sengupta ◽  
S. K. Manchanda

Abstract. We report the first successful culture of 8-cell/morula stage rat embryos in a fully synthetic medium supplemented with 3% crystalline bovine serum albumin. Eighty-four per cent of morulae developed to blastocysts, showing that this is a highly efficient culture medium for in vitro studies on rat pre-implantation embryos. Blastocyst formation was severely inhibited by antioestrogen (nafoxidine 3 μg/ml) but no further reversal was obtained by giving oestrogen to culture medium containing this antagonist.


Zygote ◽  
2004 ◽  
Vol 12 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Boon Chin Alexis Heng ◽  
Ng Soon Chye

This study attempted to develop a ‘less meiotically competent’ murine model for oocyte in vitro maturation (IVM), which could more readily be extrapolated to human clinical assisted reproduction. Oocyte meiotic competence was drastically reduced upon shortening the standard duration of in vivo gonadotrophin stimulation from 48 h to 24 h, and by selecting only naked or partially naked germinal vesicle oocytes, instead of fully cumulus enclosed oocyte complexes. With such a less meiotically competent model, only porcine granulosa coculture significantly enhanced the oocyte maturation rate in vitro, whereas no significant enhancement was observed with macaque and murine granulosa coculture. Increased serum concentrations and the supplementation of gonadotrophins, follicular fluid and extracellular matrix gel within the culture medium did not enhance IVM under either cell-free or coculture conditions. Culture medium conditioned by porcine granulosa also enhanced the maturation rate, and this beneficial effect was not diminished upon freeze–thawing. Enhanced IVM in the presence of porcine granulosa coculture did not, however, translate into improved developmental competence, as assessed by in vitro fertilization and embryo culture to the blastocyst stage.


Author(s):  
Mohamad Agus Setiadi ◽  
Ni Wayan Kurniani Karja

Penelitian ini bertujuan mengetahui kemampuan perkembangan awal embrio sapi in vitro menggunakan media tunggal untuk maturasi, fertilisasi, dan kultur berbahan dasar tissue culture medium (TCM) 199. Oosit sapi dikumpulkan dari rumah potong hewan dengan teknik aspirasi dan diklasifikasikan berdasarkan kekompakan sel kumulus dan sitoplasma yang homogen. Oosit dimaturasi pada medium TCM 199 yang disuplementasi dengan 10 IU/ml pregnant mare’s serum gonadotropin (PMSG), 10 IU/ml human chorionic gonadotropin (hCG), dan 10% fetal bovine serum (FBS), dilakukan selama 24 jam pada inkubator 5% CO2, 39 C. Fertilisasi dilakukan pada dua media yang berbeda yaitu media rutin fertilisasi dan media berbahan dasar TCM 199 dengan suplemen bovine serum albumin (BSA) dan heparin. Setelah fertilisasi, kumulus sel dihilangkan (denudasi), kemudian dikultur pada media TCM 199 yang disuplementasi dengan asam amino esensial dan non-esensial serta 10% FBS selama 3 hari. Hasil penelitian menunjukkan tingkat maturasi oosit pada sistem yang digunakan mampu mendukung 81,5% oosit mencapai tahap metafase II (M-II). Tingkat pembelahan embrio lebih tinggi pada media rutin dibandingkan dengan media TCM 199 yakni masing-masing 44,4 dan 23,2%. Jumlah embrio tahap 4-8 sel pada kedua perlakuan tidak berbeda nyata. Dapat disimpulkan media tunggal berbasis TCM dapat digunakan untuk produksi embrio in vitro.


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