Objective: To study the efficacy of estradiol for cycle programming in oocyte donors when administered in the follicular phase only.
Design: Prospective interventional study.
Setting: Single fertility center.
Patients: Ninety-three oocyte donors underwent programmed stimulation using estradiol in the follicular phase. Their previous unprogrammed cycles were used as historical controls.
Interventions: Donors received 8 mg of estradiol hemihydrate from day 2 till 1 day before the start of stimulation.
Main Outcome Measures: The primary outcome measures studied were the number of oocytes retrieved, duration of stimulation, and total gonadotropin dose. The number of mature oocytes, oocyte maturation rate, fertilization rate, blastulation rate, implantation rate, and pregnancy rate were the secondary outcomes.
Results: The average number of oocytes retrieved was higher in the study group (36.4 vs. 32.5). The duration of stimulation (9.22 vs. 9.21 days) and the total gonadotropin dose were similar (3,085.5 vs. 3,026 IU) between both groups. The mean number of mature oocytes retrieved was higher in the study group (30.1 vs. 26.3), but the maturation rate was similar (84.6% vs. 81.2%). The fertilization rate (77.8% vs. 78.7%), number of blastocysts, blastulation rate (32.7% vs. 33.2%), implantation rate (59.3% vs. 66.3%), and pregnancy rate (77.3% vs. 77.1%) showed no statistically significant difference.
Conclusions: Estradiol usage in the follicular phase alone is an effective and convenient option for cycle programming in oocyte donors. It can yield similar mature oocytes and does not affect the clinical outcomes. Further larger sample-sized studies may be needed to validate its use which can also be extended to routine in vitro fertilization cycles.
Clinical Trials Registration Number: CTRI/2020/09/027815.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8978085 | PMC |
| http://dx.doi.org/10.1016/j.xfre.2021.12.007 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Prolactin Response to a Submaximal Dose of Ghrelin in Different Phases of the Normal Menstrual Cycle.
Medicina (Kaunas)
December 2024
Department of Obstetrics and Gynaecology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece.
A similar secretory pattern of prolactin (PRL) and growth hormone (GH) during the menstrual cycle has been reported in response to a high dose of ghrelin in adult healthy women. The present study aimed to assess the pattern of PRL and GH secretions in response to a submaximal dose of ghrelin during different menstrual phases in adult healthy women. Eight female subjects with normal cyclicity were enrolled.
View Article and Find Full Text PDFImpact of the menstrual cycle phases and time of day on markers of stress: salivary α-amylase and secretory immunoglobulin A.
Stress
December 2025
Metabolic & Applied Physiology Laboratory, Department of Health & Human Performance, Texas State University, San Marcos, TX, USA.
Article Synopsis
- The study investigates the effects of menstrual cycle phases and time of day on various stress and immune biomarkers, including salivary α-amylase (sAA) and secretory immunoglobulin A (SIgA), in a group of 17 participants.
- No significant interactions were found between menstrual cycle phases and time of day for the biomarkers, resting blood pressure, heart rate, or body composition.
- However, results indicate that resting heart rate and sAA levels were higher in the afternoon, while SIgA levels were higher in the morning, highlighting the influence of time of day on these markers, rather than the menstrual cycle phases.
Ara h 2-expressing cucumber mosaic virus-like particle (VLP Peanut) induces in vitro tolerogenic cellular responses in peanut-allergic individuals.
J Allergy Clin Immunol
January 2025
National Heart and Lung Institute, Imperial College London, London, United Kingdom. Electronic address:
Background: Peanut allergy (PA) is one of the most prevalent food allergies with a lack of favorable safety/efficacy treatment. A cucumber mosaic virus-like particle expressing peanut allergen component Ara h 2 (VLP Peanut) has been developed as a novel therapeutic approach for PA.
Objective: We assessed the tolerogenic properties and reactivity of VLP Peanut.
MVA-based SARS-CoV-2 vaccine candidates encoding different spike protein conformations induce distinct early transcriptional responses which may impact subsequent adaptive immunity.
Front Immunol
January 2025
Institute for Infection Research and Vaccine Development (IIRVD), Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Introduction: Vaccine platforms such as viral vectors and mRNA can accelerate vaccine development in response to newly emerging pathogens, as demonstrated during the COVID-19 pandemic. However, the differential effects of platform and antigen insert on vaccine immunogenicity remain incompletely understood. Innate immune responses induced by viral vector vaccines are suggested to have an adjuvant effect for subsequent adaptive immunity.
View Article and Find Full Text PDFOvarian steroids modulate mRNA expression of ECM associated genes and collagen deposition induced by TGF β1 in equine endometrium in vitro.
Sci Rep
January 2025
Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, 10-748, Poland.
Equine endometrosis is a major cause of infertility in mares and is characterized by degenerative, functional and fibrotic changes in the endometrium with increased collagen (COL) deposition. Transforming growth factor (TGF)-β1 is one of the major pro-fibrotic factors involved in the excessive deposition of extracellular matrix (ECM) components in the equine endometrium. It has been demonstrated that ovarian steroids, specifically 17β-estradiol (E2) and progesterone (P4), not only regulate the cyclicity of the estrous cycle, but also have been implicated as anti- or pro-fibrotic factors.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!