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Impact of congenital uterine anomalies on reproductive outcomes of IVF/ICSI-embryo transfer: a retrospective study.

Eur J Med Res

January 2024

Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China.

Objective: To study the impact of congenital uterine anomalies on reproductive outcomes after in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI)-embryo transfer (ET).

Methods: A retrospective study including a total of 865women with congenital uterine anomalies and 865 age and admission time matched controls who underwent the first IVF/ICSI-ET cycle between January 2010 and December 2019 was conducted. Women with uterine anomalies were classified into canalization defect (complete septate uterus and subseptate uterus) and unification defect (unicornuate uterus, bicornuate uterus, and didelphus uterus) according to the processes of abnormal embryological development.

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Body size is one of the most economically important traits of dairy cattle, as it is significantly associated with cow longevity, production, health, fertility, and environmental adaptation. The identification and application of genetic variants using a novel genetic approach, such as genome-wide association studies (GWASs), may give more insights into the genetic architecture of complex traits. The identification of genes, single nucleotide polymorphisms (SNPs), and pathways associated with the body size traits may offer a contribution to genomic selection and long-term planning for selection in dairy cows.

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Genome-wide association studies uncover genes associated with litter traits in the pig.

Animal

December 2022

School of Life Science and Engineering, Foshan University, Foshan, Guangdong 528000, China. Electronic address:

Litter traits are critical economic variables in the pig industry as they represent a production indicator that can serve to determine sow fertility. In this study, a genome-wide association study on litter traits, including total number born (TNB), number born alive (NBA), litter birth weight (LBW), average birth weight (ABW), and piglet uniformity (PU), was carried out on two pig breeds (Yorkshire and Landrace). A total of 3 637 pigs of both breeds were genotyped using the GeneSeek GGP Porcine 50K SNP BeadChip.

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Impact of uterine malformations on pregnancy and neonatal outcomes of IVF/ICSI-frozen embryo transfer.

Hum Reprod

March 2022

Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.

Study Question: What is the impact of uterine malformations on reproductive and neonatal outcomes of IVF/ICSI-frozen embryo transfer?

Summary Answer: Unification defective uteri are associated with poorer neonatal outcomes including higher preterm delivery rate and lower birthweight, and septate uteri are associated with worse fertility outcomes including higher miscarriage and lower live birth rates (LBRs).

What Is Known Already: Several studies have investigated the negative effects of uterine malformations on pregnancy outcomes. However, an all-round and definitive conclusion has not been reached yet owing to the relatively low incidence of the disease and the heterogeneity of study populations, especially among women undergoing ART.

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Reproductive, Obstetric and Neonatal Outcomes in Women with Congenital Uterine Anomalies: A Systematic Review and Meta-Analysis.

J Clin Med

October 2021

Department of Obstetrics and Gynecology, Severance Hospital, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul 06273, Korea.

Congenital uterine anomalies (CUA) may influence reproductive performance, resulting in adverse pregnancy associated complications. This study aimed to assess the association of CUA subtypes with reproductive, obstetric, and perinatal outcomes. We performed a systematic search of the MEDLINE, EMBASE, and Cochrane libraries for studies comparing pregnancy outcomes between women with CUA and those with a normal uterus.

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