فهرست مطالب mostafa pournourali

 The aim of this study was to determine whether the addition of bioactive materials derived from Menstrual Blood Stem Cells (MenSCs) to the oocyte maturation medium may improve the quality of bovine embryos in vitro.

 MenSCs were collected from 6 healthy women (between 26 and 36 years old) and after 3 days of culture, their bioactive materials were frozen. The bovine Cumulus-Oocyte-Complexes (COCs) were aspirated from ovarian slaughterhouse and the oocytes with more than three layers of cumulus cells were cultured in vitro in media supplemented with (treatment) and without (control) 10% MenSCs’ bioactive materials. After IVM/IVF, the presumptive zygotes were cultured for 8 days.

 The blastocyst rate on day 8 in treatment group was higher than control (40.2±1.9 vs. 23±4.2.3, p=0.001). The ratio of Trophectoderm (TE) and Inner Cell Mass (ICM) (ICM/TE) cells was also greater in treatment group compared to control (30.3±2 vs. 14.9±1; p=0.001). The re-expansion of vitrified blastocysts, 24 hours after warming, in treatment group was higher than control (93.3±2.5 vs. 66.2±8.8; p=0.01). The expression of some genes related to pluripotency and implantation (OCT4, CDX2, and IFNT) were increased in treatment group compared to control (p<0/05).

 In conclusion, the addition of MenSCs’ bioactive materials during in vitro maturation of bovine oocytes could improve the quantity and quality of bovine IVP embryos. Also, the expression of some genes associated with pluripotency and implantation in the blastocyst would be increased.

Infertility is defined as a lack of conception in a couple that has been having unprotected intercourse, for one year. Despite enormous progresses in the understanding of human reproductive physiology, the underlying causes of male infertility remains undefined in about 50.0% of cases, which are referred to as idiopathic infertility. Human apurinic/apyrimidinic endonuclease (ApE1) is a multifunctional protein that has an important role in the base excision repair (BER) pathway. ApE1 -141 T>G polymorphism is located in the promoter region. The aim of this study was to investigate the relation between ApE1 -141T>G polymorphism and idiopathic male infertility.

In this case-control study, Samples were collected from 90 patients diagnosed with idiopathic male infertility and also from 60 control subjects. Collected samples were genotyped by allele-specific PCR (AS-PCR).

There was significantly association between -141T>G polymorphism and idiopathic male infertility (p = 0.022).

The polymorphism 141T>G can be associated with male infertility. However, further studies are needed to confirm the results.

In the present study karyotype of Mazani river buffalo was studied in comparison with those of Azeri buffalo populations from Iran. Blood samples were taken from ten (5 males and 5 females) Mazani buffaloes and thirty (15 males and 15 females) Azeri buffaloes. The Mazani buffaloes belong to Mazendaran province and Azeri buffaloes belong to west and east Azerbaijan and Ardebil provinces. Blood lymphocytes cultured at 37ºC for 72 hours in the presence of phytohemagglutinin and the metaphase spreads were performed on microscopic slide. Giemsa was used to stain chromosomes. The Mazani and Azeri Buffalo exhibited the same karyotype with diploid number of 2n = 50. The fundamental numbers (NF) were 60 in male and female. The types of chromosome were 6 submetacentric, 4 metacentric and 40 telocentric which the X chromosome is the largest telocentric and the Y chromosome is one of the smallest telocentric chromosomes. The relative length of chromosomes ranged between 2.17% to 7.2% in Mazani buffalo, and also 2.21% to 6.55% in Azeri buffalo. No obvious abnormality was found among chromosomes. Therefore, based on the identified karyotype both Mazani and Azeri buffaloes are riverine.