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AIMS Mismatch repair gene malfunction occurs early in the carcinogenesis of hereditary non-polyposis colorectal cancers (HNPCCs), leading to an accelerated accumulation of mutations and possibly to change in expression of cell cycle proteins. There is strong evidence that tumorigenesis in HNPCCs differs from sporadic ones. HNPCC-related endometrial cancers are less well studied. Our aim was to ...

We investigated the expression and function of laminin and type IV collagen (COL-4) in the human endometrial epithelium throughout the menstrual cycle. Their expression was demonstrated by immunohistochemistry, while cytological analysis of the human endometrial epithelial cell line HHUA cultured on laminin- or COL-4-coated plates provided information on their roles in cell proliferation, struc...

the success of oocyte donation is influenced by multiple factors. we performed a retrospective analysis to evaluate prognostic factors in oocyte donation cycles. the main outcome measurements including recipient age, donor age, estradiol level in midcycle, the day of transfer and number of transferred embryos were not different in pregnant and non pregnant groups. endometrial pattern but not en...

BACKGROUND The transcription factor CCAAT/enhancer-binding protein (C/EBP) beta is a critical mediator of murine endometrial function during embryo implantation. Our objective is to characterize changes in C/EBP beta mRNA abundance and protein localization over the normal human menstrual cycle. METHODS Fifty normally cycling volunteers without reproductive disorders were randomized to undergo...

BACKGROUND We aimed to explore the endometrial histology and endocrine profiles on day 21 of an artificial cycle in patients with premature ovarian failure (POF) treated with oral dydrogesterone (DG) or vaginal micronized progesterone. METHODS The study was designed as a prospective pilot study at an academic reproductive medicine unit. Six POF patients were included in the study. After estro...

Objective: The aim of this trial was to determine whether endometrial scratch-suction caused by insertion tube of (IUCD) with suction improved the probability of pregnancy in the subsequent IVF cycle in patients who had previous failed IVF outcome by removing small polyps and any hazardous materials. Design: Observational prospective cohort experimental study. Setting: Zagazig University Hospit...

Inactivating mutations in the PTEN tumor suppressor gene occur in approximately 30-50% of endometrial carcinomas. PTEN is a phosphatase that negatively regulates the phosphoinositide 3-kinase signaling pathway, including the downstream effector AKT. To evaluate the role of PTEN in endometrial growth regulation, we expressed wild-type or mutant PTEN in endometrial carcinoma cell lines. As expect...

background: recurrent implantation failure is one of the most issues in ivf cycles.some researchers found that beneficial effects of endometrial scratching in womenwith recurrent implantation failure, while some authors demonstrated contrary resultsobjective: the present study aimed to investigate the effect of intrauterine. salineinfusion as a form of endometrial injury, during fresh in vitro ...

Placenta protein 14 (PP14), which is the most abundant product of the secretory endometrium, has been proposed as the best biochemical marker of endometrial function in women. In this study, 19 normogonadotrophic women of infertile couples were monitored with serial measurements of concentrations of PP14, gonadotrophins and sex steroids and ultrasound scanning of endometrial thickness throughou...