Reproductive Biology

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Article Reproductive Biology

Bacteria in the healthy equine vagina during the estrous cycle

P. Malaluang, T. Akerholm, G. Nyman, J. Lindahl, I. Hansson, J. M. Morrell

Summary: An understanding of the normal bacterial microbiota of any organ is important to study the changes that may occur due to different conditions or interventions. This study aimed to investigate the bacterial microbiota of the mare vagina and its changes throughout the estrous cycle. The results showed that there was an increase in bacterial diversity during the estrous cycle, with the highest diversity observed on day 14.

THERIOGENOLOGY (2024)

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Article Obstetrics & Gynecology

Outcome of subsequent pregnancies in women with prior uterine rupture

Ohad Houri, Asaf Romano, Yossi Geron, Gil Zeevi, Eran Hadar, Shiri Barbash-Hazan, Shir Danieli-Gruber

Summary: Women with prior uterine rupture have good maternal and neonatal outcomes in subsequent pregnancies when managed at a tertiary medical center, with planned elective term cesarean delivery, or even earlier, at the onset of spontaneous preterm labor.

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY (2024)

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Article Obstetrics & Gynecology

Performance of fetal ultrasound and magnetic resonance imaging in predicting birthweight according to the test-to-delivery interval: A cohort study

Dominique A. Badr, Mieke M. Cannie, Caroline Kadji, Xin Kang, Andrew Carlin, Jacques C. Jani

Summary: The objective of this study was to assess the influence of the test-to-delivery interval on the performance of ultrasound and MRI in predicting birthweight. The results showed that MRI performed best in predicting birthweight greater than gestational age if delivery occurred within two weeks of the examination, with a slight decrease thereafter, while ultrasound performance decreased drastically over time.

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY (2024)

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Review Obstetrics & Gynecology

A systematic review on idiopathic intracranial hypertension comorbid with polycystic ovarian syndrome and its consequences

Natalia Rzewuska, Jacek Kunicki, Katarzyna Pieniak, Paulina Laskus, Bernadeta Zabielska, Roman Smolarczyk, Michal Kunicki

Summary: This systematic review examined the comorbidity of idiopathic intracranial hypertension (IIH) and polycystic ovarian syndrome (PCOS) and their impact on metabolism, hormone levels, and reproduction. The findings showed a high prevalence of comorbidity between the two conditions, which may have significant clinical implications for patient management.

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY (2024)

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Article Obstetrics & Gynecology

An artificial intelligence-based approach for selecting the optimal day for triggering in antagonist protocol cycles

Shachar Reuvenny, Michal Youngster, Almog Luz, Rohi Hourvitz, Ettie Maman, Micha Baum, Ariel Hourvitz

Summary: Using a machine-learning model to determine the optimal trigger days can improve the outcomes of antagonist protocol cycles in freeze-all or fresh transfer cycles, for all age groups. Implementing these models can more accurately predict the number of retrieved oocytes, optimizing physicians' decisions, balancing workloads, and creating more standardized yet patient-specific protocols.

REPRODUCTIVE BIOMEDICINE ONLINE (2024)

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Article Reproductive Biology

Alteration of epigenetic methyl and acetyl marks by postnatal chromium (VI) exposure causes apoptotic changes in the ovary of the F1 offspring

Sudipta Dutta, Kirthiram K. Sivakumar, John W. Erwin, Jone A. Stanley, Joe A. Arosh, Robert J. Taylor, Sakhila K. Banu

Summary: This study found that exposure to hexavalent chromium disrupts follicle development and causes apoptosis by altering epigenetic marks in the ovary.

REPRODUCTIVE TOXICOLOGY (2024)

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Article Obstetrics & Gynecology

Endometrial protein expression and phosphorylation landscape decipher aberrant insulin and mTOR signalling in patients with recurrent pregnancy loss

Chao Chen, Qi Wen, Feng Deng, Rong Li, Ying Wang, Xiumei Zhen, Jing Hang

Summary: This study investigates the proteomic and phosphoproteomic differences in the endometrium of women with recurrent pregnancy loss (RPL) compared to healthy control women during different phases of the menstrual cycle. The results identify differentially expressed proteins and phosphorylated proteins, and highlight the insulin/cyclic nucleotide signalling pathway and AMPK/mTOR signalling pathway as major contributors to the abnormality of RPL endometrium. The findings provide insights into potential proteins associated with the pathogenesis of RPL and contribute to the identification of potential targets for RPL treatment.

REPRODUCTIVE BIOMEDICINE ONLINE (2024)

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Article Reproductive Biology

Diuron-induced fetal Leydig cell dysfunction in in vitro organ cultured fetal testes

Ran Lee, Won-Young Lee, Hyun-Jung Park

Summary: This study investigates the toxicity of diuron on fetal mouse testes and finds that diuron has a negative impact on the development of fetal Leydig cells, while not affecting germ cells and Sertoli cells.

REPRODUCTIVE TOXICOLOGY (2024)

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Article Obstetrics & Gynecology

Is a pregnancy following a second trimester uterine evacuation associated with increased adverse maternal and neonatal outcomes?

Tal Margaliot Kalifa, Hen Y. Sela, Jordanna Joseph, Sorina Grisaru-Granovsky, Fayez Khatib, Misgav Rottenstreich

Summary: Pregnancies following a second trimester uterine evacuation do not have an increased risk of preterm delivery or other adverse perinatal outcomes compared to pregnancies following a first trimester uterine evacuation.

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY (2024)

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Article Reproductive Biology

STZ-induced gestational diabetes exposure alters PTEN/AKT/ mTOR-mediated autophagy signaling pathway leading to increase the risk of neonatal hypoxic-ischemic encephalopathy

Lei Gong, Siyi Jiang, Jia Tian, Yong Li, Wansu Yu, Lubo Zhang, Daliao Xiao

Summary: Exposure to gestational diabetes mellitus during pregnancy can lead to the development of a neonatal brain hypoxia/ischemia-sensitive phenotype. The PTEN/AKT/mTOR/autophagy signaling pathway plays a role in this process.

REPRODUCTIVE TOXICOLOGY (2024)

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Article Obstetrics & Gynecology

Induction of labor versus expectant management in patients with idiopathic polyhydramnios

Corina N. Schoen, Sami Backley, Lauren Orr, Amrita Roy, Tiffany Corlin, Alexander B. Knee

Summary: This retrospective cohort study aimed to evaluate whether induction of labor is associated with a lower risk of cesarean section in patients with isolated polyhydramnios. The study found that planned induction was associated with a lower rate of cesarean delivery compared to expectant management, but the difference was not statistically significant. Additionally, no differences were observed in maternal or fetal secondary outcomes.

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY (2024)

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Article Reproductive Biology

Combined exposure of beta-cypermethrin and emamectin benzoate interferes with the HPO axis through oxidative stress, causing an imbalance of hormone homeostasis in female rats

Yuxin Li, Xianzhi He, Bin Sun, Nannan Hu, Jiamin Li, Ruolan You, Feiyan Tao, Lei Fang, Yuanyuan Li, Qingfeng Zhai

Summary: This study investigated the toxic effects and mechanism of beta-CYP and EMB on the reproductive system of female rats. The results showed that exposure to these pesticides led to changes in hormone and gene expression in the hypothalamic-pituitary-ovarian axis, as well as alterations in oxidative damage indicators. The findings support the evaluation of the adverse effects of pesticide exposure on reproductive health in greenhouse operations.

REPRODUCTIVE TOXICOLOGY (2024)

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Correction Obstetrics & Gynecology

Left ventricular diastolic function in the fifth decade of life in women with a history of spontaneous preterm birth (Vol 286, pg 40, 2023)

Laura E. Janssen, Marjon A. de Boer, Eline C. E. von Konigslow, Elisa Dal, Martijn A. Oudijk, Danielle Robbers-Visser, Christianne J. M. de Groot

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY (2024)

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Article Obstetrics & Gynecology

Gym lifestyle factors and male reproductive health: a study into young adult usage and perceptions

Alice Newman-Sanders, Jackson C. Kirkman-Brown, Meurig T. Gallagher

Summary: This study revealed a significant lack of awareness among young adults in the UK regarding the potential impacts of gym lifestyles and supplementation on male infertility. Men were found to have a concerning lack of concern for their own fertility, with differences in awareness levels between men and women. It was also observed that men were more likely to consider making changes to their behavior if it had a long-term impact on their fertility compared to short-term effects.

REPRODUCTIVE BIOMEDICINE ONLINE (2024)

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Article Obstetrics & Gynecology

Random-start ovarian stimulation in an oocyte donation programme: a large, single-centre, experience

Jaime Guerrero, Juan Carlos Castillo, Jorge Ten, Jose Antonio Ortiz, Belen Lledo, Domingo Orozco, Francisco Quereda, Andrea Bernabeu, Rafael Bernabeu

Summary: The study found no significant differences in clinical outcomes between using oocytes obtained from random-start protocols and those from conventional ovarian stimulation in oocyte donation treatments. Luteal-phase stimulation required longer stimulation and higher FSH consumption.

REPRODUCTIVE BIOMEDICINE ONLINE (2024)

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Article Genetics & Heredity

An overview of CFTR mutation profiles and assisted reproductive technology outcomes in Chinese patients with congenital obstructive azoospermia

Meng Wang, Juepu Zhou, Rui Long, Ruolin Mao, Limin Gao, Xiangfei Wang, Yinwei Chen, Lei Jin, Lixia Zhu

Summary: This study conducted an epidemiological survey of patients with congenital obstructive azoospermia (OA), screened for CFTR mutations, and analyzed the pregnancy outcomes in assisted reproductive technology. The results showed that the genetic mutation pattern of CFTR in Chinese OA patients is heterogeneous and carrying two CFTR mutations did not affect pregnancy outcomes. However, genetic counseling is still recommended for these patients.

JOURNAL OF ASSISTED REPRODUCTION AND GENETICS (2023)

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Article Obstetrics & Gynecology

Oral dydrogesterone versus micronized vaginal progesterone for luteal phase support: a double-blind crossover study investigating pharmacokinetics and impact on the endometrium

S. Loreti, K. Thiele, M. De Brucker, C. Olsen, J. Centelles-Lodeiro, C. Bourgain, W. Waelput, H. Tournaye, G. Griesinger, J. Raes, S. Vieira-Silva, P. Arck, C. Blockeel, S. Mackens

Summary: This study aimed to compare the pharmacokinetics, endometrial histology, transcriptomics, and immune cell composition of oral dydrogesterone and micronized vaginal progesterone for luteal phase support. The results showed that although plasma concentrations of dydrogesterone significantly increased after oral intake, its effect on the endometrium was similar to micronized vaginal progesterone. Oral dydrogesterone exhibited rapid clearance, and dosing frequency may be an important factor in its efficacy.

HUMAN REPRODUCTION (2023)

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Article Endocrinology & Metabolism

Can AMH levels predict the need to step up FSH dose for controlled ovarian stimulation following a long GnRH agonist protocol in PCOS women?

Hui Huang, Haijie Gao, Yingying Shi, Bingbing Deng, Xuemei He, Jin Lin, Ping Li

Summary: The study aimed to explore the role of anti-Mullerian hormone (AMH) in predicting the need for increased recombinant FSH (rFSH) dose in polycystic ovarian syndrome (PCOS) women undergoing IVF/ICSI cycles. The results showed that increased AMH level was an independent factor for the need to increase the initial rFSH dose in PCOS patients. AMH could serve as a predictor of the need for initial rFSH dose.

REPRODUCTIVE BIOLOGY AND ENDOCRINOLOGY (2023)

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Article Obstetrics & Gynecology

Life satisfaction in parents after successful in vitro fertilization and natural pregnancy: a prospective longitudinal study from before pregnancy to 24 months after childbirth

Manuel Kiesswetter, Erik Danay, Stefan Duschek

Summary: Psychological variables in couples undergoing IVF and those with natural pregnancy were compared. IVF couples had less favorable baseline scores for all variables, but experienced an improvement in life satisfaction and a decrease in stress and worry during the first year postpartum. Couples with natural pregnancy reported temporary worsening in all variables during this period. During follow-up, all variables remained stable in both groups, with no differences in life satisfaction and stress between groups, but lower levels of worry in IVF couples at month 24. Infertility's negative impacts may fully abate after childbirth in IVF couples, while initially negative changes in well-being are reversed and stabilized in naturally conceiving couples during the child's first 2 years. Psychological support may benefit both groups at different times during pregnancy and parenthood.

HUMAN FERTILITY (2023)

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Article Obstetrics & Gynecology

Time to pregnancy and life expectancy: a cohort study of 18 796 pregnant couples

R. Lindahl-Jacobsen, M. Tavlo Petersson, L. Priskorn, N. E. Skakkebaek, A. Juul, D. M. Kristensen, M. L. Eisenberg, T. K. Jensen

Summary: Prolonged time to pregnancy is associated with increased mortality in parents in a dose-response manner.

HUMAN REPRODUCTION (2023)

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