improvements on embryo micromanipulation techniques led to the use of embryo biopsy in commercial embryo transfer programs for genetic analysis of preimplantation bovine embryos. the aim of this study was to evaluate the quality of bovine blastocyst derived from embryos biopsied at different precompacted morulae stages by assessment of cryosurvivability of the resulting blastocysts. the in vitr...

background :subclinical hypothyroidism may adversely affect in vitro fertilization (ivf) outcomes. however the cutoff of thyroid-stimulating hormone (tsh) for diagnosis and treatment is controversal. the aim of this study was to find the association of clinical pregnancy rate with regard to tsh levels in women undergoing ivf.   methods: a historical cohort study of 816 infertile patients who un...

background: repeated implantation failure (rif) is defined as pregnancy failure after two to six times with at least ten high grade embryo transfer to uterus. a variety of causes have been anticipated for rif, including anatomical, autoimmune, genetics, endocrine and thrombotic anomalies. factors responsible for rif have important implication regarding treatment however in many couples a perfec...

background: various approaches have been used in the attempts to improve the quality of frozen–thawed mouse sperms. according to literatures, it seems that hyaluronic acid (ha) has an important role on the permeability and motility of sperms and their interaction with gametes. objective: for evaluation of ha supplementation on sperm characteristics and fertilization capability, we investigated ...

background to current knowledge, different oocyte's recovery method and various seasons have profound impact on in vitro embryo production (ivep). objectives the aim of this study was to define an efficient recovery method for oocytes harvesting from slaughterhouse material in different seasons, and their effects on ivep yield. materials and methods ovaries from slaughtered ewes in breeding sea...

background: determination of oocyte and embryo quality are one of the most important goals in ivf. anti-mullerian hormone (amh) is secreted by the ovarian granulosa cells into blood flow and follicular fluid. follicular fluid anti-mullerian hormone level is probably a marker of activity of granulose cells. objective: to evaluate whether high level of follicular fluid anti-mullerian hormone leve...

background: luteal phase support is mandatory in art (assisted reproductive technologies) for optimizing outcome, so the luteal phase is supported with either progesterone, addition of estradiol to progesterone, hcg or gonadotropin releasing hormone (gnrh) agonists. supplementation of luteal phase with progesterone is prescribed for women undergoing routine ivf treatment. objective: to compare ...

background: caffeine increases the camp production that stimulates spermatozoa movement. caffeine is also used for induction of in vitro acrosome reaction in mammalian spermatozoa, an important step in achieving fertilization. objective: the aim of this study was to assess the effect of caffeine on sperm's motility, vitality and laboratory fertilization rates in mouse in two t6 and m16 media. m...

background:   case: we discuss 3 clinical cases of tubo-ovarian abscess in women with endometriosis after oocyte retrieval despite antibiotic prophylaxis between 2004 and 2011 at our center, and discuss our experience in the context of earlier reports.   conclusion: it is unclear whether antibiotic prophylaxis is necessary in these women, and which antibiotic is best. only douching with povidon...

background: the selection of blastocyst warmed for transfer is based on pre-freeze morphology in vitrified-warmed single blastocyst transfer cycles. but, it is controversial which parameter of blastocyst morphology most closely related to the clinical outcomes. objective: to estimate the effect of blastocoele expansion, trophectoderm (te) morphology grade, and inner cell mass (icm) morphology g...