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https://www.readbyqxmd.com/read/28077143/pregnant-women-carrying-microcephaly-foetuses-and-zika-virus-contain-potentially-pathogenic-microbes-and-parasites-in-their-amniotic-fluid
#1
Diogo Antonio Tschoeke, Louisi Souza de Oliveira, Luciana Leomil, Amilcar Tanuri, Fabiano Lopes Thompson
BACKGROUND: Microcephaly has become a major public health problem in Brazil. The total number of newborns with microcephaly was reported to be >4000 in June 2016. Studies suggest that Zika Virus is a major cause of new microcephaly cases in Brazil. Inside the uterus, the foetus is surrounded by the Amniotic Fluid, a proximal fluid that contains foetal and maternal cells as well as microorganisms and where Zika Virus was already found. CASE PRESENTATION: A previous study reported the presence of the Zika Virus in the amniotic fluid (collected in the 28th gestational week) of two pregnant women carrying microcephaly foetuses in Brazil...
January 11, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28064548/amniotic-fluid-sludge-prevalence-and-clinical-significans-of-it-in-asymptomatic-patients-at-high-risk-for-spontaneous-preterm-delivery
#2
Ilknur Adanir, Ozgur Ozyuncu, Ayse Filiz Gokmen Karasu, Lutfu S Onderoglu
INTRODUCTION: The aim of our study is to determine prevalence and clinical significance of the presence of amniotic fluid 'sludge' among asymptomatic patients at high-risk for spontaneous preterm delivery, prospectively. MATERIAL AND METHODS: In our study, 99 patients at high risk for spontaneous preterm delivery were evaluated for the presence of amniotic fluid sludge with transvaginal ultrasonography at 20-22., 26-28. and 32-34. gestational weeks, prospectively; between August 2009 and October 2010 in Hacettepe University Hospital...
January 8, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28045214/neutrophil-extracellular-traps-in-acute-chorioamnionitis-a%C3%A2-mechanism-of-host-defense
#3
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...
January 3, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28031434/testing-for-cmv-in-pregnancy
#4
Alda Saldan, Gabriella Forner, Carlo Mengoli, Nadia Gussetti, Giorgio Palù, Davide Abate
Congenital CMV-infection (cCMV) represents a relevant cause of deafness and neurological damage in newborns. Intrauterine CMV transmission might result after primary or non-primary infections, though at different rates (30% vs 0.2%, respectively). At present prenatal diagnosis of CMV infection is mainly based on maternal serology, detection of CMV-DNA in amniotic fluid and fetal blood, and US and MRI imaging. Recent evidences suggest that cCMV may be an immune-mediated disease and that evaluation of humoral and especially T-cell immunity may improve the overall prenatal diagnosis...
December 28, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28025631/amniotic-band-syndrome-perinatal-hospice-and-palliative-care-versus-active-management
#5
Shadi Rezai, Justin Faye, Annika Chadee, Sri Gottimukkala, Ruchi Upadhyay, Carla Lara, Benamanahalli H Rajegowda, Andrew D Corwin, Rasila V Lala, Jessica Vernon, Dilfuza Nuritdinova, Stephen Chasen, Cassandra E Henderson
Introduction. Amniotic band syndrome and sequence are a relatively rare condition in which congenital anomalies occur as a result of the adherence and entrapment of fetal parts with coarse fibrous bands of the amniotic membrane. A large percentage of reported cases have an atypical gestational history. The frequency of this obstetric complication is not affected by fetal gender, genetic abnormality, or prenatal infection. Case. A 21-year-old, G1P0 female parturient at 18 weeks and 5 days with a single intrauterine gestation during a routine ultrasound evaluation was noted to have amniotic band sequence...
2016: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28018449/congenital-miliary-tuberculosis-in-an-18-day-old-boy
#6
Jue Seong Lee, Chang Hoon Lim, Eunji Kim, Hyunwook Lim, Yoon Lee, Ji Tae Choung, Young Yoo
Congenital tuberculosis (TB) is a rare disease that is associated with high mortality. Mycobacterium tuberculosis, the causative agent, may be transmitted from the infected mother to the fetus by the transplacental route or by aspiration of infected amniotic fluid. Clinical symptoms and signs are not specific. Miliary patterns are the most common findings in the chest X-rays of many infants with congenital TB. In this case, an 18-day-old boy had jaundice on the fifth day of birth, and fever and respiratory distress appeared on the 18th day...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28001177/uromodulin-a-new-biomarker-of-fetal-renal-function
#7
Thais Emanuelle Faria Botelho, Alamanda Kfoury Pereira, Patrícia Gonçalves Teixeira, Eura Martins Lage, Gabriel Costa Osanan, Ana Cristina Simões E Silva
INTRODUCTION: Obstructive uropathies are main diseases affecting the fetus. Early diagnosis allows to establish the appropriate therapy to minimize the risk of damage to kidney function at birth. Biochemical markers have been used to predict the prognosis of renal function in fetuses. Uromodulin, also known by Tamm-Horsfall protein (THP) is exclusively produced in the kidneys and in normal conditions is the protein excreted in larger amounts in human urine. It plays important roles in kidneys and urinary tract...
December 2016: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/27999684/a-perspective-of-the-diagnosis-and-management-of-congenital-tuberculosis
#8
REVIEW
Manou Irmina Saramba, Dongchi Zhao
Tuberculosis continues to be a prevalent disease in the world and a global public health issue in many countries. The disease is more complicated in pregnant women because it imperils unborn offspring and results in congenital tuberculosis later if undiagnosed and untreated. Congenital tuberculosis is rare entity and an uncommon disease along with a high mortality rate. Congenital tuberculosis, a severe clinical type of tuberculosis caused by Mycobacterium tuberculosis, is a serious and fatal disease if left untreated...
2016: Journal of Pathogens
https://www.readbyqxmd.com/read/27995540/high-mobility-group-box-1-and-receptor-for-advanced-glycation-end-products-in-preterm-infants-with-brain-injury
#9
Hong-Yan Lu, Jiang-Lin Ma, Ji-Yan Shan, Jie Zhang, Qiu-Xia Wang, Qiang Zhang
BACKGROUND: High-mobility group box-1 (HMGB1) protein acts as an important pro-infl ammatory mediator, which is capable of activating inflammation and tissue repair. HMGB1 can bind to its receptor such as advanced glycation end products (RAGE). RAGE, in turn, can promote the production of pro-inflammatory cytokines. Soluble RAGE (sRAGE) is a truncated form of the receptor comprising the extracellular domain of RAGE and can inhibit RAGE-activation. The objective of this study was to investigate whether HMGB1 and RAGE are involved in the development of brain injury in preterm infants...
December 20, 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27977881/immune-activation-in-amniotic-fluid-from-zika-virus-associated-microcephaly
#10
Alice M M Ornelas, Paula Pezzuto, Paola P Silveira, Fabiana O Melo, Thales A Ferreira, Patricia S Oliveira-Szejnfeld, Jeime I Leal, Melania M R Amorim, Stuart Hamilton, William D Rawlinson, Cynthia C Cardoso, Douglas F Nixon, Amilcar Tanuri, Adriana S Melo, Renato S Aguiar
Recent advances in the understanding of neuropathogenesis associated with Zika virus (ZIKV) infection has led to descriptions of neonatal microcephaly cases. However, none of these reports has evaluated the humoral response during ZIKV infection. We report here polyfunctional immune activation associated with increased IP-10, IL-6, IL-8, VEGF, MCP-1 and G-CSF levels in the amniotic fluid of ZIKV positive pregnant women with neonatal microcephaly. These cytokines have been associated not only with neuronal damage, but also with differentiation and proliferation of neural progenitor cells...
December 15, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/27974410/the-human-ureaplasma-species-as-causative-agents-of-chorioamnionitis
#11
REVIEW
Emma L Sweeney, Samantha J Dando, Suhas G Kallapur, Christine L Knox
The human Ureaplasma species are the most frequently isolated microorganisms from the amniotic fluid and placentae of women who deliver preterm and are also associated with spontaneous abortions or miscarriages, neonatal respiratory diseases, and chorioamnionitis. Despite the fact that these microorganisms have been habitually found within placentae of pregnancies with chorioamnionitis, the role of Ureaplasma species as a causative agent has not been satisfactorily explained. There is also controversy surrounding their role in disease, particularly as not all women infected with Ureaplasma spp...
January 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/27925622/relation-between-amniotic-fluid-infection-or-cytokine-levels-and-hearing-screen-failure-in-infants-at-32-wk-gestation-or-less
#12
Eun Young Jung, Byung Yoon Choi, Jihye Rhee, Jaehong Park, Soo-Hyun Cho, Kyo Hoon Park
BACKGROUND: To determine whether the presence of intra-amniotic infection and elevated proinflammatory cytokine levels in amniotic fluid (AF) are associated with failure in the newborn hearing screen (NHS) test in very preterm neonates. METHODS: This is a retrospective cohort study of 112 premature singleton neonates born to women with preterm labor or preterm premature rupture of membranes at ≤32 wk. AF obtained through amniocentesis was cultured, and interleukin-6 (IL-6) and IL-8 levels were determined...
December 7, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27888650/closure-of-the-cervical-os-in-patients-after-fertility-preserving-treatment-for-early-cervical-cancer-results-of-a-prospective-observational-study
#13
Mandy Mangler, Malgorzata Lanowska, Anne Bartens, Aaron Schindler, Jens-Uwe Blohmer, Dorothee Speiser
INTRODUCTION: Up to 50% of the infants delivered after radical vaginal trachelectomy (RVT) are born prematurely. An effective strategy to reduce this number could be the closure of the cervical os (CCO). PATIENTS AND METHODS: Fifteen pregnant patients who had a RVT due to early cervical cancer were included in this prospective case control study. All patients were scheduled for CCO early in the second trimester. CCO was performed in 12 patients. Their data were compared to data from 125 pregnancies after a RVT without CCO...
November 26, 2016: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/27884950/neutrophil-extracellular-traps-in-the-amniotic-cavity-of-women-with-intra-amniotic-infection-a-new-mechanism-of-host-defense
#14
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Derek Miller, Ronald Unkel, Majid Shaman, Suzanne M Jacques, Bogdan Panaitescu, Valeria Garcia-Flores, Sonia S Hassan
OBJECTIVE: Neutrophil extracellular traps (NETs) control microbial infections through their antimicrobial activities attributed to DNA, histones, granules, and cytoplasmic proteins (eg, elastase). Intra-amniotic infection is characterized by the influx of neutrophils into the amniotic cavity; therefore, the aim of this study was to determine whether amniotic fluid neutrophils form NETs in this inflammatory process. METHODS: Amniotic fluid samples from women with intra-amniotic infection (n = 15) were stained for bacteria detection using fluorescent dyes...
November 23, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27870156/combinations-and-loads-of-bacteria-affect-the-cytokine-production-by-fetal-membranes-an-in-vitro-study
#15
Nathalia Mayumi Noda-Nicolau, Jossimara Polettini, Morgan R Peltier, Márcia Guimarães da Silva, Ramkumar Menon
PROBLEM: The polybacterial invasion and inflammation of the amniotic cavity is a common scenario in PTB, and then, we analyzed the cytokine production by human fetal membranes to better understand the host response to polybacterial infections. METHOD OF STUDY: Fetal membranes were treated by heat-inactivated genital mycoplasmas and Gardnerella vaginalis at 10(3) or 10(6) colony/color-forming units/mL alone or in combination. Cytokines/receptors were measured in the medium by immunoassays...
December 2016: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27824126/preservation-of-epithelial-progenitor-cells-from-collagenase-digested-oral-mucosa-during-ex-vivo-cultivation
#16
Yi-Jen Hsueh, Shiang-Fu Huang, Jui-Yang Lai, Shih-Chieh Ma, Hung-Chi Chen, Sung-En Wu, Tze-Kai Wang, Chi-Chin Sun, Kevin Sheng-Kai Ma, Jan-Kan Chen, Chyong-Huey Lai, David Hui-Kang Ma
To avoid xenogeneic infection, we report a novel protocol for producing animal-derived component-free oral mucosal epithelial cells (OMECs) sheet for transplantation, in which collagenase was used to replace dispase II/trypsin-EDTA for digesting oral mucosal tissue, and human platelet-derived PLTMax to replace fetal bovine serum. The resulting epithelial aggregates were expanded on de-epithelialized amniotic membranes without 3T3 feeder cells, and serum-free EpiLife was used to reduce contamination by submucosal mesenchymal cells...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27819066/group-b-streptococcus-circumvents-neutrophils-and-neutrophil-extracellular-traps-during-amniotic-cavity-invasion-and-preterm-labor
#17
Erica Boldenow, Claire Gendrin, Lisa Ngo, Craig Bierle, Jay Vornhagen, Michelle Coleman, Sean Merillat, Blair Armistead, Christopher Whidbey, Varchita Alishetti, Veronica Santana-Ufret, Jason Ogle, Michael Gough, Sengkeo Srinouanprachanh, James W MacDonald, Theo K Bammler, Aasthaa Bansal, H Denny Liggitt, Lakshmi Rajagopal, Kristina M Adams Waldorf
Preterm birth is a leading cause of neonatal morbidity and mortality. Although microbial invasion of the amniotic cavity (MIAC) is associated with the majority of early preterm births, the temporal events that occur during MIAC and preterm labor are not known. Group B Streptococci (GBS) are β-hemolytic, gram-positive bacteria, which commonly colonize the vagina but have been recovered from the amniotic fluid in preterm birth cases. To understand temporal events that occur during MIAC, we utilized a unique chronically catheterized nonhuman primate model that closely emulates human pregnancy...
October 2016: Science Immunology
https://www.readbyqxmd.com/read/27795433/efficient-transformation-of-primary-human-mesenchymal-stromal-cells-by-adenovirus-early-region-1-oncogenes
#18
Thomas Speiseder, Helga Hofmann-Sieber, Estefanía Rodríguez, Anna Schellenberg, Nuray Akyüz, Judith Dierlamm, Thilo Spruss, Claudia Lange, Thomas Dobner
: Previous observations that human amniotic fluid cells (AFC) can be transformed by human adenovirus type 5 (HAdV-5) E1A/E1B oncogenes prompted us to identify the target cells in the AFC population that are susceptible to transformation. Our results demonstrate that one cell type corresponding to mesenchymal stem/stroma cells (hMSCs) can be reproducibly transformed by HAdV-5 E1A/E1B oncogenes as efficiently as primary rodent cultures. HAdV-5 E1-transformed hMSCs exhibit all properties commonly associated with a high grade of oncogenic transformation, including enhanced cell proliferation, anchorage-independent growth, increased growth rate, and high telomerase activity as well as numerical and structural chromosomal aberrations...
January 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/27794570/limiting-the-exposure-of-select-fetuses-to-intrauterine-infection-inflammation-improves-short-term-neonatal-outcomes-in-preterm-premature-rupture-of-membranes
#19
Karen L Archabald, Irina A Buhimschi, Mert O Bahtiyar, Antonette T Dulay, Sonya S Abdel-Razeq, Christian M Pettker, Heather S Lipkind, John T Hardy, Megan E McCarthy, Guomao Zhao, Vineet Bhandari, Catalin S Buhimschi
BACKGROUND: To improve neonatal outcomes in pregnancies at heightened risk for early-onset neonatal sepsis (EONS), there is a need to identify fetuses that benefit from expectant management as opposed to early delivery. Detectable haptoglobin and haptoglobin-related protein (Hp&HpRP switch-on status) in cord blood has been proposed as a biomarker of antenatal exposure to intra-amniotic infection and/or inflammation (IAI), an important determinant of EONS. SUBJECTS AND METHODS: We analyzed 185 singleton newborns delivered secondary to preterm premature rupture of membranes (PPROM)...
October 29, 2016: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/27763883/clinical-chorioamnionitis-at-term-vii-the-amniotic-fluid-cellular-immune-response
#20
Alicia Martinez-Varea, Roberto Romero, Yi Xu, Derek Miller, Ahmed I Ahmed, Piya Chaemsaithong, Noppadol Chaiyasit, Lami Yeo, Majid Shaman, Kia Lannaman, Benjamin Cher, Sonia S Hassan, Nardhy Gomez-Lopez
OBJECTIVES: 1) To characterize the cellular composition of the amniotic fluid of patients diagnosed with clinical chorioamnionitis at term, as a function of the presence or absence of microorganisms determined by cultivation techniques, and 2) to characterize the cytokine production by white blood cells present in the amniotic fluid using flow cytometry-based techniques. MATERIALS AND METHODS: Amniotic fluid samples from 20 women who had the diagnosis of clinical chorioamnionitis at term were analyzed using cultivation techniques (for aerobic and anaerobic bacteria as well as genital Mycoplasmas)...
October 20, 2016: Journal of Perinatal Medicine
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