background: infertility is an increasing medical and social problem. in vitro fertilization (ivf) has become a common and accessible treatment for a wide variety of indications that have variable outcomes. natural killer (nk) cells have been identified as relevant immunological factors involved in reproductive success or failure. objective: the aim of this study was to compare the percentage of...

background: pyridaben, a pyridazinone derivative, is a new acaricide and insecticide for control of mites and some insects such as white flies, aphids and thrips. objective: this study was designed to elucidate how pyridaben can affect the sperms' morphological parameters, its dna integrity, and to estimate the effect of various quantities of pyridaben on in vitro fertilization rate. materials ...

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...

BACKGROUND As discontinuation in in vitro fertilization (IVF) programs has been associated with a poor prognosis, one hypothesis is that some couple-specific predictive factors in IVF may be shared with opposite effect by both success (i.e. live birth) and treatment discontinuation processes. Our objective was to perform a joint analysis of these two processes to examine the hypothesis of a lin...

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 :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...