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Kyle K Jensen, Karen Y Oh, Anne M Kennedy, Roya Sohaey
Intrauterine linear echogenicity (ILE) is a common ultrasonographic finding in the gravid uterus and has variable causes and variable maternal and fetal outcomes. Correctly categorizing ILE during pregnancy is crucial for guiding surveillance and advanced imaging strategies. Common causes of ILE include membranes in multiple gestations, uterine synechiae with amniotic sheets, and uterine duplication anomalies. Less common causes include circumvallate placenta, chorioamniotic separation, and hemorrhage between membranes...
March 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Sophia M R Lannon, Kristina M Adams Waldorf, Tina Fiedler, Raj P Kapur, Kathy Agnew, Lakshmi Rajagopal, Michael G Gravett, David N Fredricks
BACKGROUND: The majority of early preterm births are associated with intrauterine infections, which are thought to occur when microbes traffic into the uterus from the lower genital tract and seed the placenta. Bacterial vaginosis (BV) is associated with heterogeneous bacterial communities in the vagina and is linked to preterm birth. The extent to which trafficking into the uterus of normal and BV-associated vaginal bacteria occurs is unknown. The study objective was to characterize in parallel the distribution and quantities of bacteria in the vagina, uterus, and placental compartments...
February 25, 2018: Journal of Maternal-fetal & Neonatal Medicine
Emiliano Chiarot, Angela Spagnuolo, Silvia Maccari, Eleonora Naimo, Alessandra Acquaviva, Raffaella Cecchi, Bruno Galletti, Monica Fabbrini, Elena Mori, Paolo Ruggiero, Guido Grandi, Maria Rita Fontana, Giuliano Bensi, Immaculada Margarit
Group B Streptococcus (GBS) is a normal inhabitant of recto-vaginal mucosae in up to 30% of healthy women. Colonization is a major risk factor for perinatal infection which can lead to severe complications such as stillbirth and neonatal invasive disease. Intra-partum antibiotic prophylaxis in colonized women is a safe and cost-effective preventive measure against early-onset disease in the first days of life, but has no effect on late-onset manifestations or on early maternal infection. Maternal immunization with capsular polysaccharide-based vaccines shows promise for the prevention of both early-onset and late-onset neonatal infections, although ability to prevent maternal colonization and ascending infection has been less studied...
February 7, 2018: Scientific Reports
Bogdan Panaitescu, Roberto Romero, Nardhy Gomez-Lopez, Yi Xu, Yaozhu Leng, Eli Maymon, Percy Pacora, Offer Erez, Lami Yeo, Sonia S Hassan, Chaur-Dong Hsu
OBJECTIVE: Upon inflammasome activation, the adaptor protein of the inflammasome apoptosis-associated speck-like protein containing a CARD (ASC) forms intracellular specks, which can be released into the extracellular space. The objectives of this study were to investigate whether: 1) extracellular ASC is present in the amniotic fluid of women who delivered at term; 2) amniotic fluid ASC concentrations are greater in women who underwent spontaneous labor at term than in those who delivered at term in the absence of labor; and 3) amniotic epithelial and mesenchymal cells can form intracellular ASC specks invitro...
January 2, 2018: Journal of Maternal-fetal & Neonatal Medicine
JoonHo Lee, Chong Jai Kim, Jung-Sun Kim, Deug-Chan Lee, Sejin Ahn, Bo Hyun Yoon
Acute chorioamnionitis, frequently observed in preterm placentas, is a major risk factor for the development of infection and non-infection-related adverse perinatal outcomes. MicroRNAs play important roles in immune cell development and function as well as in the development of cancers and neurologic diseases. We sought to investigate the changes in microRNA-223 (miR-223) expression and the functional significance of the changes in miR-223 expression in foetal organs in the presence of acute chorioamnionitis...
October 30, 2017: Journal of Cellular and Molecular Medicine
Natalia S Carvalho, Antonio F Moron, Ramkumar Menon, Sergio Cavalheiro, Mauricio M Barbosa, Herbene J Milani, Marcia M Ishigai
An increased understanding of the reparative process in fetal membrane following surgical techniques may be helpful to decrease the risks to mother and fetus and avoid adverse pregnancy outcomes. The present study discusses histological evaluation of the fetal membrane following open fetal surgery. Chorioamniotic membranes (n=10) were obtained following birth from pregnancies that underwent open fetal surgery for myelomeningocele. The collagen distribution was quantified using picrosirius-polarization method comparing the suture site with non-suture site...
October 2017: Experimental and Therapeutic Medicine
Majid Zare-Bidaki, Sajad Sadrinia, Soheila Erfani, Ehsan Afkar, Nahid Ghanbarzade
BACKGROUND: There is evidence of antibacterial properties of human chorioamniotic layer. However, the distinctive contribution of its individual parts, amniotic and chorionic membranes, to these effects is still unknown. The aim of present study was comparison of the antibacterial effects between amniotic and chorionic membranes. METHODS: Chorioamniotic layer was removed from placenta belonging to 43 healthy mothers whose infants were delivered by caesarean section...
April 2017: Journal of Reproduction & Infertility
Nicole Ochsenbein-Kölble, Franziska Krähenmann, Margret Hüsler, Martin Meuli, Ueli Moehrlen, Lucca Mazzone, Peter Biro, Roland Zimmermann
INTRODUCTION: To compare tocolysis with magnesium sulfate versus atosiban regarding the occurrence of short-term preterm labor and maternal side effects during and after open fetal myelomeningocele (MMC) repair. MATERIAL AND METHODS: A prospective nonrandomized cohort study was performed including 30 fetal MMC cases. The first 15 cases (group 1) received magnesium sulfate according to the MOMS protocol. In the following 15 cases (group 2), magnesium sulfate was substituted by atosiban...
August 17, 2017: Fetal Diagnosis and Therapy
Binnari Kim, Soo-Young Oh, Jung-Sun Kim
BACKGROUND: Meconium aspiration syndrome (MAS) is defined by respiratory distress requiring supplemental oxygen in a meconium-stained neonate. MAS is clinically subclassified as mild, moderate, and severe according to the oxygen requirement. The aims of this study were to compare the histological findings in the placentas of MAS neonates with those of meconium-stained but non-MAS neonates and to analyze the correlation between the severity of MAS and the grade of its histological parameters...
September 2017: Journal of Pathology and Translational Medicine
Michael V Zaretsky, David K Manchester, Henry L Galan, Nicholas J Behrendt, Ahmed I Marwan, Kenneth W Liechty, Timothy M Crombleholme
Intraperitoneal amniotic fluid leak is a known complication of fetoscopic procedures that usually resolves spontaneously with expectant management. Intraperitoneal amniotic fluid leak may persist after fetoscopic procedures due to a myometrial window as well as to persistent chorioamniotic membrane disruption, which may be amenable to surgical repair.
June 2017: Clinical Case Reports
Jose Uberos
Prematurity is a major health problem in all countries, especially in certain ethic groups and increasing recurrence imply the influence of genetic factors. Published genetic polymorphisms are identified in relation to the 4 pathophysiological models of prematurity described: Chorioamniotic-decidual inflammation, premature contraction pathway, decidual haemorrhage and susceptibility to environmental toxins. 240 articles are identified, 52 articles are excluded because they are not original, not written in English or duplicated...
May 31, 2017: Minerva Pediatrica
Michelle Han, Yalda Afshar, Andrew H Chon, Emily Scibetta, Rashmi Rao, Ramen H Chmait
INTRODUCTION: Pseudoamniotic band syndrome (PABS) occurs iatrogenically after fetal surgery or amniocentesis due to chorioamniotic membrane separation. Separation of the amnion from the chorion can expand to form fibrous amniotic bands that can envelope fetal limbs or the umbilical cord, with consequences ranging from limb constriction to fetal demise. CASE REPORT: We report a case of bilateral fetal pleural effusions at 27 weeks' gestation treated by bilateral thoracoamniotic shunts...
August 2017: Fetal and Pediatric Pathology
Asmama Yasmina, Amina Barakat
Prelabour rupture of membranes (PROM) at term occurs in 5 to 10% of pregnancies. It accounts for a significant proportion of neonatal morbidity and mortality. The aim of this case study was to determine the maternal and obstetric prognostic factors as well as full-term newborns outcomes in pregnancies complicated by prelabour rupture of membranes in patients hospitalized or managed at the outpatient clinic. We conducted a retrospective study of all cases of full-term infants born to mothers whose pregnancy was complicated by PROM, recorded in the neonatology department at the Children's Hospital of Rabat between 1 January and 31 July 2014...
2017: Pan African Medical Journal
Mayumi Takano, Masahiko Nakata, Susumu Murata, Masahiro Sumie, Mineto Morita
INTRODUCTION: This study aimed to investigate the risk factors, incidence, and influence on the perinatal outcome of chorioamniotic membrane separation (CMS) after fetoscopic laser photocoagulation (FLP). MATERIAL AND METHODS: This retrospective study included 312 women who underwent FLP for twin-to-twin transfusion syndrome (TTTS). Clinical records were used to review obstetrical examinations, complications, operative data, ultrasonographic findings, and perinatal and neonatal follow-up data in all patients...
April 22, 2017: Fetal Diagnosis and Therapy
Elsa Lorthe, Mathilde Quere, Loïc Sentilhes, Pierre Delorme, Gilles Kayem
OBJECTIVES: To describe the incidence of breech presentation at 22-34 weeks' gestation, estimate the incidence of cesarean section delivery by cause of prematurity, and assess the factors associated with caesarean delivery in preterm breech births with preterm labor or preterm premature rupture of membranes. STUDY DESIGN: EPIPAGE 2 is a French national prospective population-based cohort study of preterm births that occurred in 546 maternity units in 2011. We estimated the overall incidence of breech presentation and the incidence of cesarean delivery by cause of prematurity...
May 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
Haidy El-Azzamy, Andrea Balogh, Roberto Romero, Yi Xu, Christopher LaJeunesse, Olesya Plazyo, Zhonghui Xu, Theodore G Price, Zhong Dong, Adi L Tarca, Zoltan Papp, Sonia S Hassan, Tinnakorn Chaiworapongsa, Chong Jai Kim, Nardhy Gomez-Lopez, Nandor Gabor Than
BACKGROUND: The decidua has been implicated in the "terminal pathway" of human term parturition, which is characterized by the activation of pro-inflammatory pathways in gestational tissues. However, the transcriptomic changes in the decidua leading to terminal pathway activation have not been systematically explored. This study aimed to compare the decidual expression of developmental signaling and inflammation-related genes before and after spontaneous term labor in order to reveal their involvement in this process...
May 2017: Journal of Pathology and Translational Medicine
Masaharu Murata, Keisuke Ishii, Yuka Sato, Jun Sasahara, Shusaku Hayashi, Nobuaki Mitsuda
No abstract text is available yet for this article.
January 31, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
Nardhy Gomez-Lopez, Roberto Romero, Marcia Arenas-Hernandez, Bogdan Panaitescu, Valeria Garcia-Flores, Tara N Mial, Aashna Sahi, Sonia S Hassan
OBJECTIVE: Intra-amniotic infection is associated with spontaneous preterm labor. In most cases, the infection is subclinical and bacteria are detected in the amniotic cavity rather than in the chorioamniotic membranes. The aims of this study were to establish a model of intra-amniotic lipopolysaccharide (LPS)-induced preterm labor/birth that resembles the subclinical syndrome and to compare this model to two established models of LPS-induced preterm labor/birth. METHODS: Pregnant B6 mice received an intra-amniotic, intra-uterine, or intra-peritoneal injection of LPS (100 ng/amniotic sac, 15 μg/25 μL, and 15 μg/200 μL respectively) or PBS (control)...
February 2018: Journal of Maternal-fetal & Neonatal Medicine
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Olesya Plazyo, Ronald Unkel, Yaozhu Leng, Nandor Gabor Than, Tinnakorn Chaiworapongsa, Bogdan Panaitescu, Zhong Dong, Adi L Tarca, Vikki M Abrahams, Lami Yeo, Sonia S Hassan
Inflammasomes are cytosolic multiprotein complexes that orchestrate inflammation in response to pathogens and endogenous danger signals. Herein, we determined whether the chorioamniotic membranes from women in spontaneous preterm labor with acute histologic chorioamnionitis (1) express major inflammasome components; (2) express caspase (CASP)-1 and CASP-4 as well as their active forms; (3) exhibit apoptosis-associated speck-like protein containing a CARD (ASC)/CASP-1 complex formation; and (4) release the mature forms of interleukin (IL)-1β and IL-18...
January 1, 2017: Reproductive Sciences
Nardhy Gomez-Lopez, Roberto Romero, Yaozhu Leng, Valeria Garcia-Flores, Yi Xu, Derek Miller, Sonia S Hassan
PROBLEM: Neutrophil extracellular traps (NETs) were recently described as a mechanism for microbial killing in the amniotic cavity of women with intra-amniotic infection. Such a clinical condition can result in acute chorioamnionitis, a placental lesion characterized by the infiltration of maternal neutrophils in the chorioamniotic membranes. Herein, we investigated whether these infiltrating neutrophils form NETs in the chorioamniotic membranes from women who underwent spontaneous term or preterm labor with acute chorioamnionitis...
March 2017: American Journal of Reproductive Immunology: AJRI
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