Publications by authors named "Ragaa Mansour"

Article Synopsis
  • In 2014, approximately 1.93 million assisted reproductive technology (ART) cycles were conducted in 76 countries, accounting for about 66% of global ART activity, with notable increases in success rates and the use of frozen embryo transfer (FET).
  • There was a continued rise in single embryo transfer (SET), which has helped decrease multiple birth rates, alongside a higher adoption of preimplantation genetic testing and stabilized use of intracytoplasmic sperm injection (ICSI).
  • The study highlighted the global disparities in ART practices and outcomes, emphasizing the importance of the International Committee for Monitoring Assisted Reproductive Technologies (ICMART) for tracking trends and providing relevant data to stakeholders.
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Article Synopsis
  • In 2012, there was a nearly 20% increase in the total number of assisted reproductive technology (ART) cycles compared to 2011, with notable trends in frozen embryo transfers, oocyte donation, and single embryo transfers.
  • Although ART usage and techniques evolved, pregnancy and delivery rates remained stable while the number of multiple deliveries decreased.
  • The data was gathered from 69 countries and 2600 clinics, indicating a global participation in ART practices, highlighting ongoing disparities in access and effectiveness across different regions.
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The present study was led to investigate the defensive role of Terminalia laxiflora extract (TLE) on fipronil (FPN) induced hepatotoxicity and nephrotoxicity in male rats. Rats were administered with TLE (100 mg/kg) against the renal toxicity and hepatotoxicity induced by administration of FPN (10.5 mg/kg) for 30 days.

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Background: The rate of multiple pregnancies in IVF/ICSI ranges from 20 to 30%. The incidence of preterm birth in multiple pregnancies is as high as 60% and is even higher in pregnancies conceived after IVF & ICSI. The effect of progesterone on prevention of preterm birth in twins is controversial.

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Summary: Reprogramming autologous adult cells to pluripotent cells allows for relatively safe cell replacement therapy. This can be achieved by nuclear transfer, cell fusion, or induced pluripotent stem cell technology However, the epigenetic memory of the cell is considered as a great challenge facing the complete reprograming of cells by these methods. Introducing oocyte-specific factors into differentiated cells may present a promising approach by mimicking cellular reprogramming during fertilization.

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Article Synopsis
  • The commentary highlights that assisted reproductive technology (ART) serves as a key indicator for assessing access to infertility care globally.
  • It discusses various factors that impact ART usage, along with the inequalities that affect access to these services.
  • The importance of a standardized reporting method for ART usage is emphasized to aid in policy evaluation and track advancements in infertility care.
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Introduction: One potential stressor that can affect preimplantation and postimplantation embryonic growth after in vitro fertilisation (IVF) is the pH of the human embryo culture medium, but no evidence exists to indicate which pH level is optimal for IVF. Based on anecdotal evidence or mouse models, culture media manufacturers recommend a pH range of 7.2 to 7.

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Female aging is one of the most important factors that impacts human reproduction. With aging, there is a natural decline in female fertility. The decrease in fertility is slow and steady in women aged 30-35 years; however, this decline is accelerated after the age of 35 due to decreases in the ovarian reserve and oocyte quality.

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The multifetal reduction (MFR) procedure is usually reserved for high-order multiple pregnancies, and aspirated tissues are typically discarded. In this study, cells obtained from MFR tissue (termed multifetal reduction embryonic cells (MFR-ECs)), were characterized by genotypic and phenotypic analyses and tested by injection under the kidney capsule of nude mice. MFR-ECs were highly proliferative in culture and showed a normal karyotype by microarray CGH.

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Objective: To report the utilization, effectiveness, and safety of practices in assisted reproductive technology (ART) globally in 2011 and assess global trends over time.

Design: Retrospective, cross-sectional survey on the utilization, effectiveness, and safety of ART procedures performed globally during 2011.

Setting: Sixty-five countries and 2,560 ART clinics.

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This prospective case-control study aimed to test the presence of insulin resistance (IR) in men with unexplained infertility. We included two groups: the study group including 160 infertile men with unexplained oligozoospermia (sperm count <10 × 10/ml) and normal hormonal profile, and the control group of 79 men with proven fertility within the preceding year. A fasting blood test measured IR, FSH, LH, total cholesterol, low-density lipoprotein, high-density lipoprotein and triglycerides.

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Objective: Heparin can modulate proteins, and influence processes involved in implantation and trophoblastic development. This study aimed to assess the improvement of clinical pregnancy and implantation rates after local intrauterine injection of low-molecular-weight heparin (LMWH) in patients undergoing intracytoplasmic sperm injection (ICSI).

Methods: A randomised case/control design was followed in women scheduled for ICSI.

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Objective: To analyze information on assisted reproductive technology (ART) performed worldwide, and trends in outcomes over successive years.

Design: Cross-sectional survey on access, efficiency, and safety of ART procedures performed in 55 countries during 2007.

Setting: Not applicable.

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In this prospective randomized study, the effect of daily gonadotrophin-releasing hormone agonist (GnRHa) in the luteal phase on IVF and intracytoplasmic sperm injection (ICSI) outcomes was assessed. Women (n = 446) were counselled for IVF-ICSI, and randomized on the day of embryo transfer to group 1 (daily 0.1 mg subcutaneous GnRHa until day of beta-HCG) (n = 224) and group 2 (stopped GnRHa on day of HCG injection) (n = 222).

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Study Question: What are the access, effectiveness and safety of assisted reproductive technology (ART) worldwide in 2006?

Summary Answer: ART access, effectiveness and safety vary markedly among countries. Overall, there was an increase in the use of ICSI, single embryo transfer (SET) and frozen embryo transfer (FET). There was a decline in the multiple delivery rate (DR) and preterm birth rate.

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Three new flavonol glycosides isolated from the 70% methanol extract of Suaeda maritima (Chenopodiaceae) were characterized based on spectroscopic and chemical methods as quercetin 3-O-α-l-rhamnopyranosyl(1″' → 6″)-β-d-galactopyranoside-7-O-β-d-glucopyranosyl(1″″' → 2″″)-glucopyranoside, kaempferol 3-O-α-l-rhamnopyranosyl(1″' → 6″)-β-d-galactopyranoside-7-O-β-d-glucopyranosyl(1″″' → 2″″)-glucopyranoside, and kaempferol 3-O-α-l-rhamnopyranosyl(1″' → 6″)-β-d-galactopyranoside-7-O-(2″″'-O-trans-feruloyl)-β-d-glucopyranosyl-(1″″' → 2″″)-β-d-glucopyranoside. In addition, four known compounds, namely, quercetin and kaempferol, methyl cis, trans-ferulate, and methyl trans-ferulate were identified. The plant extract and these compounds showed cytotoxic activity against the human tumor cell lines MCF7, HCT116, and HEPG2.

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Objective: To assess the value of routine antimüllerian hormone (AMH) assays in patients considered high risk for cancellation.

Design: Prospective controlled study.

Setting: A private IVF center, Cairo, Egypt.

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Objective: To analyze information on assisted reproductive technology (ART) performed worldwide and trends in outcomes over successive years.

Design: Cross-sectional survey on access, effectiveness, and safety of ART procedures performed in 53 countries during 2005.

Setting: A total of 2,973 clinics from national and regional ART registries.

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The aim of this study was to evaluate the effect of vaginal natural progesterone on the prevention of preterm birth in IVF/intracytoplasmic sperm injection (ICSI) pregnancies. A single-centre prospective placebo-controlled randomized study was performed. A total of 313 IVF/ICSI pregnant patients were randomized into two groups for either treatment with daily 400 mg vaginal natural progesterone or placebo, starting from mid-trimester up to 37 weeks or delivery.

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Objective: To investigate the value of intrauterine injection of human chorionic gonadotropin (hCG) before embryo transfer (ET).

Design: Prospective randomized study.

Setting: The Egyptian IVF-ET Center.

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Objective: To evaluate the use of a thin catheter for hysterosalpingography (HSG) for reducing the pain experienced during the procedure.

Methods: Infertile women undergoing tubal patency tests were randomised into two groups. In the study group (n=66) a thin catheter originally designed for intrauterine insemination was used to inject the dye.

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Objective: To analyze information on assisted reproductive technologies (ART) performed globally.

Design: Data on access, efficacy, and safety of ART were collected for the year 2003 from 54 countries.

Setting: National and regional ART registries globally.

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Background: For the last few decades urinary human chorionic gonadotrophin (hCG) has been used to induce final oocyte maturation triggering in in vitro fertilization (IVF) and intra-cytoplasmic sperm injection (ICSI) cycles. Recombinant technology has allowed the production of two drugs that can be used for the same purpose, to mimic the endogenous luteinizing hormone (LH) surge. This allows commercial production to be adjusted according to market requirements; the removal of all urinary contaminants; and the safe subcutaneous administration of a compound with less batch-to-batch variation.

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Vanishing fetal twins occurred in 9% (264 out of 2,829) intracytoplasmic sperm injection pregnancies and are associated with a lower fetal loss rate in the first trimester. The live birth rate was higher in pregnancies associated with vanishing fetuses.

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