Female reproductive abnormalities in mouse adolescent pregnancy

Reproduction ◽  
2021 ◽  
Author(s):  
Chen Yang ◽  
Yue Li ◽  
Hai-Yang Pan ◽  
Meng-Yuan Li ◽  
Ji-Min Pan ◽  
...  
Keyword(s):  
Adolescent Pregnancy ◽  
Embryo Implantation ◽  
Multiple Pregnancy ◽  
Perinatal Outcomes ◽  
Mature Female ◽  
Placental Development ◽  
Adolescent Pregnancies ◽  
Adverse Perinatal Outcomes ◽  
Multiple Abnormalities ◽  
Shed Light

There are around 300 million adolescent pregnancies worldwide, accounting for 11% of all births worldwide. Accumulating evidence demonstrates that many adverse perinatal outcomes are associated with adolescent pregnancies. However, how and why these abnormalities occur remain to be defined. In this study, pregnancy at different stages were compared between 25-30 day old and mature female mice. We found the litter size of adolescent pregnancy is significantly decreased from F1 to F3 generations compared to mature pregnancy. On days 8 and 12 of pregnancy, multiple abnormalities in decidual and placental development appear in F3 adolescent pregnancy. On days 5 and 8, uterine endoplasmic reticulum stress is dysregulated in F3 adolescent pregnancy. Embryo implantation and decidualization are also compromised in adolescent pregnancy. Many genes are abnormally expressed in adolescent estrous uteri. The abnormal endocrine environment and abnormal implantation from uterine immaturity may result in multiple pregnancy failures in adolescent pregnancy. This study should shed light on human adolescent pregnancy.

scholarly journals Female Reproductive Failures in Mouse Adolescent Pregnancy

2021 ◽  
Author(s):  
Chen Yang ◽  
Yue Li ◽  
Hai-Yang Pan ◽  
Meng-Yuan Li ◽  
Ji-Min Pan ◽  
...  
Keyword(s):  
Adolescent Pregnancy ◽  
Embryo Implantation ◽  
Multiple Pregnancy ◽  
Perinatal Outcomes ◽  
Mature Female ◽  
Placental Development ◽  
Adolescent Pregnancies ◽  
Multiple Abnormalities

Abstract Background: There are around 300 million adolescent pregnancies worldwide, accounting for 11% of all births worldwide. Accumulating evidence demonstrates that many adverse perinatal outcomes are associated with adolescent pregnancies. However, how and why these abnormalities occur remain to be defined. Methods: To compare uterine maturity, implantation, decidualization and placental development between 25-30 days old and 3 months old mature female CD-1 strain mice. Both in vivo mouse pregnancy and in vitro cell culture were used. Western blot, real time RT-PCR, immunostaining and immunofluorescence were used to study the progress of pregnancy during two groups.Results: We found the litter size of adolescent pregnancy is significantly decreased from F1 to F3 generations compared to mature pregnancy. On days 8 and 12 of pregnancy, multiple abnormalities in placental and decidual developments appear in F3 adolescent pregnancy. On days 5 and 8, uterine endoplasmic reticulum stress is dysregulated compared to mature pregnancy. Embryo implantation and decidualization are also compromised in adolescent pregnancy. Many genes are abnormally expressed in adolescent estrous uteri. Conclusion: The uterine immaturities and abnormal implantation may cause multiple pregnancy failures in adolescent pregnancy.

scholarly journals Characteristics and adverse outcomes of Chinese adolescent pregnancies between 2012 and 2019

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yanxia Xie ◽  
Xiaodong Wang ◽  
Yi Mu ◽  
Zheng Liu ◽  
Yanping Wang ◽  
...  
Keyword(s):  
Adolescent Pregnancy ◽  
Gestational Age ◽  
Rural Areas ◽  
Reference Group ◽  
Perinatal Outcomes ◽  
Severe Anaemia ◽  
Adverse Outcomes ◽  
Near Miss ◽  
Adolescent Women ◽  
Adolescent Pregnancies

AbstractWe aimed to describe the characteristics of adolescent pregnancy, determine its effect on adverse maternal and perinatal outcomes and explore whether that association varies with gestational age with the goal of proposing specific recommendations for adolescent health in China. This study included 2,366,559 women aged 10–24 years who had singleton pregnancies between 2012 and 2019 at 438 hospitals. Adolescent pregnancy was defined as younger than 20 years of age. We used multivariable logistic regression to estimate the effects. Women aged 20–24 years served as the reference group in all analyses. The proportion of rural girls with adolescent pregnancies rebounded after 2015 even though common-law marriage in rural areas decreased. Higher risks of eclampsia (adjusted odds ratio (aOR) 1.87, 95% confidence interval (CI) 1.57 ~ 2.23), severe anaemia (aOR 1.18, 95% CI 1.09 ~ 1.28), maternal near miss (MNM; aOR 1.24, 95% CI 1.12 ~ 1.37), and small for gestational age (SGA; aOR 1.30, 95% CI 1.28 ~ 1.33) were observed when gestational age was > 37 weeks. Adolescent pregnancy was independently associated with increased risks of other perinatal outcomes. Further implementation of pregnancy prevention strategies and improved health care interventions are needed to reduce adolescent pregnancies and prevent adverse fertility outcomes among adolescent women in China at a time when adolescent fertility rate is rebounding.

scholarly journals Association between adverse perinatal outcomes and amino acid levels measured with nutrient questionnaire in adolescent pregnancies

2016 ◽  
Vol 79 (6) ◽  
pp. 335-339 ◽  
Author(s):  
Ali Irfan Guzel ◽  
Mehmet Cinar ◽  
Selcuk Erkilinc ◽  
Rıfat Taner Aksoy ◽  
Omer Hamid Yumusak ◽  
...  
Keyword(s):  
Amino Acid ◽  
Perinatal Outcomes ◽  
Amino Acid Levels ◽  
Adolescent Pregnancies ◽  
Adverse Perinatal Outcomes

scholarly journals Exploring  the influence of advanced maternal age on adverse perinatal outcome in Southern Anhui province, China

2019 ◽  
Author(s):  
Dandan Ge ◽  
Mingshu Si ◽  
Yong Xia
Keyword(s):  
Risk Factors ◽  
Perinatal Outcome ◽  
Maternal Age ◽  
Multiple Logistic Regression Analysis ◽  
Multiple Pregnancy ◽  
Perinatal Outcomes ◽  
Advanced Maternal Age ◽  
Multiple Logistic Regression ◽  
Adverse Perinatal Outcome ◽  
Adverse Perinatal Outcomes

Abstract Background : Elderly parturient women may face many pregnancy risks, which have serious consequences for perinatal and maternal. The objective of this study is to explore the association between advanced maternal age and adverse perinatal outcomes. Methods : In this study, we used retrospective study to randomly selected 977 puerpera ( aged 35 years and older) as the research group and 977 puerpera (aged 20 to 34 years older) as the control group from Yijishan Hospital for the years 2017-2018. Univariate analysis was used to test the association between gestational age and adverse perinatal outcomes. Multiple logistic regression analysis was performed to examine the factors associated with adverse perinatal outcome. A nomogram was conducted to explore the risk probability between risk factors and adverse perinatal outcome. Results : the AMA group (23.2%)exhibited a higher incidence of adverse perinatal outcome than the Non-AMA group(17.8%). Multiple logistic regression analysis showed among those who experienced multiple pregnancy, premature, hypertension, diabetes were more likely to induce adverse perinatal outcome. In this study, the risk of adverse perinatal outcome occurred in women aged 35 to 45 years with multiple pregnancy and preterm birth all was 42%-48%. The risk of adverse perinatal outcome in women aged 35 to 45 years with other variables respectively were 18%-19% (diabetes), 16%-18% (hypertension).The risk of adverse perinatal outcomes among women with AMA combined with these variables were higher than the counterpart. Conclusions : AMA is the risk factor for adverse perinatal outcome among pregnancy women and the probability that these risk factors combined with age produced poor perinatal outcome were also found. Active intervention measures focusing on the complications and treatment in AMA should be taken to ensure the health of mother and baby.

Adverse Perinatal Outcomes of Adolescent Pregnancies in Cameroon

2007 ◽  
Vol 12 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Eugene Justine Kongnyuy ◽  
Philip N. Nana ◽  
Nelson Fomulu ◽  
Shey Charles Wiysonge ◽  
Luc Kouam ◽  
...  
Keyword(s):  
Perinatal Outcomes ◽  
Adolescent Pregnancies ◽  
Adverse Perinatal Outcomes

scholarly journals Comparative analysis of monocyesis and multiple gestation course after in vitro fertilization and embriotransfer

2014 ◽  
Vol 18 (2 (70)) ◽  
Author(s):  
L. I. Sehedii ◽  
О. I. Prokopiv
Keyword(s):  
Intrauterine Growth Retardation ◽  
Multiple Pregnancy ◽  
Perinatal Outcomes ◽  
Multiple Gestation ◽  
Stimulation Protocol ◽  
Vitro Fertilization ◽  
Intrauterine Growth ◽  
Adverse Perinatal Outcomes ◽  
Observation Period

The data of comparative clinical and statistical analysis of gestation process and pregnancy outcome after IVF & ET in the observation period from 2008 through 2012 have been presented. For a set of initial parameters (age structure; cases, duration and infertility factors, the choice of controlled ovarian stimulation protocol) the studied groups did not differ. It has been concluded, that multiple gestation has a aggravating impact on pregnancies achieved in the result of IVF & ET, which was manifested in statistically more frequent, in comparison to monocyesis, cases of late miscarriage threat, intrauterine growth retardation of fetus (fetuses), preterm labour, adverse perinatal outcomes instances, which has been supported by the corresponding findings of the research in both monocyesis and multiple pregnancy groups. A substantial role in aggravating impact on pregnancy also refers to anemia, which statistically more frequently develops in women with a multiple gestation in comparison to those with monocyesis.

scholarly journals Challenges and prospects of preterm birth prediction in multiple pregnancies

2018 ◽  
Vol 67 (4) ◽  
pp. 48-59 ◽  
Author(s):  
Olga V Kosyakova ◽  
Olesya N Bespalova
Keyword(s):  
Preterm Birth ◽  
Metabolic Disorders ◽  
Multiple Pregnancy ◽  
Perinatal Outcomes ◽  
High Rate ◽  
Premature Births ◽  
Multiple Pregnancies ◽  
Priority Task ◽  
Adverse Perinatal Outcomes ◽  
High Level

For today, twins make up about 1.5% of the population of our planet. It is more than one hundred million people, which in number corresponds to the population of two Frances. The number of twins born relative to the total number of newborns in different countries and on different continents is different, but the overall trend is that it continues to grow. In recent years, the percentage of multiple pregnancy has increased almost 2.5 times, which is associated with the widespread use of assisted reproductive technologies.At the same time, pregnancy in multiple births is an extremely important problem in modern obstetrics, as it is accompanied by a high level of complications for both the mother and the fetuses. Multiple pregnancy contributes significantly to the formation of adverse perinatal outcomes, which is primarily due to the high rate of preterm birth. Premature twins are at high risk of neurological and neuropsychiatric disorders, respiratory distress, endocrine and metabolic disorders, which subsequently become the cause of disability and social maladaptation of children. In this regard, the reduction in the number of premature births is today a priority task, the solution of which is possible only through timely and correct forecasting. The multifactority of pathogenic mechanisms determines the necessity of diagnostic search strategies that can identify markers of various pathogenetic ways of preterm birth. (For citation: Kosyakova OV, Bespalova ОN. Challenges and prospects of preterm birth prediction in multiple pregnancies. Journal of Obstetrics and Women’s Diseases. 2018;67(4):48-59. doi: 10.17816/JOWD67448-59).

scholarly journals Pregnancy Outcomes and SARS-CoV-2 Infection: The Spanish Obstetric Emergency Group Study

Viruses ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 853
Author(s):  
Sara Cruz Melguizo ◽  
María Luisa de la Cruz Conty ◽  
Paola Carmona Payán ◽  
Alejandra Abascal-Saiz ◽  
Pilar Pintando Recarte ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Perinatal Outcomes ◽  
Preterm Births ◽  
Hypertensive Disorder ◽  
Obstetric Emergency ◽  
Increased Risk ◽  
Emergency Group ◽  
Adverse Perinatal Outcomes ◽  
Maternal Disease ◽  
The Relationship

Pregnant women who are infected with SARS-CoV-2 are at an increased risk of adverse perinatal outcomes. With this study, we aimed to better understand the relationship between maternal infection and perinatal outcomes, especially preterm births, and the underlying medical and interventionist factors. This was a prospective observational study carried out in 78 centers (Spanish Obstetric Emergency Group) with a cohort of 1347 SARS-CoV-2 PCR-positive pregnant women registered consecutively between 26 February and 5 November 2020, and a concurrent sample of PCR-negative mothers. The patients’ information was collected from their medical records, and the association of SARS-CoV-2 and perinatal outcomes was evaluated by univariable and multivariate analyses. The data from 1347 SARS-CoV-2-positive pregnancies were compared with those from 1607 SARS-CoV-2-negative pregnancies. Differences were observed between both groups in premature rupture of membranes (15.5% vs. 11.1%, p < 0.001); venous thrombotic events (1.5% vs. 0.2%, p < 0.001); and severe pre-eclampsia incidence (40.6 vs. 15.6%, p = 0.001), which could have been overestimated in the infected cohort due to the shared analytical signs between this hypertensive disorder and COVID-19. In addition, more preterm deliveries were observed in infected patients (11.1% vs. 5.8%, p < 0.001) mainly due to an increase in iatrogenic preterm births. The prematurity in SARS-CoV-2-affected pregnancies results from a predisposition to end the pregnancy because of maternal disease (pneumonia and pre-eclampsia, with or without COVID-19 symptoms).

scholarly journals Fetal movement counting is associated with the reduction of delayed maternal reaction after perceiving decreased fetal movements: a prospective study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shigeki Koshida ◽  
Shinsuke Tokoro ◽  
Daisuke Katsura ◽  
Shunichiro Tsuji ◽  
Takashi Murakami ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Maternal Behavior ◽  
Multivariable Analysis ◽  
Perinatal Outcomes ◽  
Fetal Movement ◽  
Post Intervention ◽  
Fetal Movements ◽  
Adverse Perinatal Outcomes ◽  
The Impact ◽  
Maternal Reaction

AbstractMaternal perception of decreased fetal movement is associated with adverse perinatal outcomes. Although there have been several studies on interventions related to the fetal movements count, most focused on adverse perinatal outcomes, and little is known about the impact of the fetal movement count on maternal behavior after the perception of decreased fetal movement. We investigated the impact of the daily fetal movement count on maternal behavior after the perception of decreased fetal movement and on the stillbirth rate in this prospective population-based study. Pregnant women in Shiga prefecture of Japan were asked to count the time of 10 fetal movements from 34 weeks of gestation. We analyzed 101 stillbirths after the intervention compared to 121 stillbirths before the intervention. In multivariable analysis, maternal delayed visit to a health care provider after the perception of decreased fetal movement significantly reduced after the intervention (aOR 0.31, 95% CI 0.11–0.83). Our regional stillbirth rates in the pre-intervention and post-intervention periods were 3.06 and 2.70 per 1000 births, respectively. Informing pregnant women about the fetal movement count was associated with a reduction in delayed maternal reaction after the perception of decreased fetal movement, which might reduce stillbirths.

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