Research Question: Does frozen embryo transfer (FET) increase the risk of allergic diseases in offspring?
Design: This study followed up 653 singleton children: 166 born through FET and 487 born through natural conception. Demographic characteristics, perinatal information and allergic diseases of children and their parents were collected through clinical medical systems and questionnaires. Among these 653 children, allergen-specific immunoglobulin E (IgE) testing was performed using peripheral blood samples collected from 207 children: 145 in the FET group and 62 in the natural conception group. The prevalence of allergic diseases and positive rates of allergen-specific IgE testing were compared between the two groups with adjustments for confounding factors.
Results: The prevalence of food allergy was significantly higher in children born through FET compared with children born through natural conception (adjusted OR = 3.154, 95% CI 1.895-5.250; P < 0.001). In addition, positive rates of food allergen sensitization were higher in children in the FET group compared with children in the natural conception group (adjusted OR = 5.769, 95% CI 2.859-11.751, P < 0.001). Children in the FET group had a higher positive sensitization rate to at least one allergen compared with children in the natural conception group (adjusted OR = 3.127, 95% CI 1.640-5.961, P < 0.001). No association was observed between FET and other allergic diseases, including asthma (P = 0.136), atopic dermatitis (P = 0.130) and allergic rhinitis (P = 0.922). Allergen sensitization IgE testing indicated no differences between the two groups in terms of positive sensitization rates of other common allergens, including animal and insect allergens (P = 0.627), inhaled outdoor allergens (P = 0.915) and inhaled outdoor allergens (P = 0.544).
Conclusion: This study suggests that children born through FET have increased risk of developing food allergy in early childhood.
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http://dx.doi.org/10.1016/j.rbmo.2024.104320 | DOI Listing |
Andrology
December 2024
Interdisciplinary Department of Medicine, School of Medicine, University of Bari "Aldo Moro", Bari, Italy.
Background: Evidence indicates a wide range of andrological alterations in patients with the Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS-CoV-2) infection and Coronavirus Disease 2019 (COVID-19).
Aim: To provide an update on the andrological effects of SARS-CoV-2 infection and COVID-19.
Methods: PubMed/MEDLINE and Institutional websites were searched for randomized clinical trials, non-systematic reviews, systematic reviews, and meta-analyses.
Front Endocrinol (Lausanne)
December 2024
Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Background: Techniques for sperm cryopreservation have exhibited their potential in male fertility preservation. The use of frozen-thawed sperm in fertilization (IVF) cycles is widespread today. However, many studies reported that cryopreservation might have adverse effects on sperm DNA integrity, motility, and fertilization, probably due to cold shock, intra- and extracellular ice crystals, and excess reactive oxygen species (ROS).
View Article and Find Full Text PDFFront Biosci (Landmark Ed)
December 2024
Department of Obstetrics and Gynecology, the First Affiliated Hospital of Xi'an Jiaotong University, 710061 Xi'an, Shaanxi, China.
The prevalence of sperm DNA fragmentation (SDF) is significantly higher in males with infertility, which is often associated with oligozoospermia and hypospermia. It can also occur in patients with infertility who have normal conventional semen indicators. The etiologies involve aberrations in sperm maturation, dysregulated apoptotic processes, and heightened levels of oxidative stress.
View Article and Find Full Text PDFCureus
November 2024
Department of Obstetrics and Gynecology, Fertility Institute, Assisted Reproduction Unit, Athens, GRC.
The study focuses on spontaneous conception after menopause in a woman with primary ovarian insufficiency (POI), with an emphasis on the role of anti-Müllerian hormone (AMH) in fertility management. This case involves a 33-year-old woman with POI who has experienced both aided and spontaneous pregnancies. She had low AMH and high follicle-stimulating hormone (FSH) levels, which typically indicate a limited ovarian reserve.
View Article and Find Full Text PDFFertil Steril
December 2024
Section of Obstetrics and Gynecology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy. Electronic address:
Objective: To demonstrate the "cold loop technique" for the hysteroscopic treatment of FIGO type 3 myomas.
Design: Step-by-step demonstration of the technique using educative video.
Subject: A 45-year-old infertile patient with repeated oocyte donor IVF failures affected by a FIGO type 3 myoma.
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