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https://www.readbyqxmd.com/read/29759046/classification-of-preterm-birth-with-placental-correlates
#1
Karen M Chisholm, Mary E Norton, Anna A Penn, Amy Heerema-McKenney
Premature birth lacks a widely accepted classification that unites features of the clinical presentation with placental pathology. To further explore associations between the clinical categories of preterm birth and placental histology, 109 infants with gestational age <34 weeks and birth weight <2000 g were selected and, based on electronic records, were classified into preterm birth categories of preterm labor, prelabor premature rupture of membranes, preeclampsia, indicated preterm birth for maternal factors (other than preeclampsia), indicated preterm birth for fetal factors, and the clinical diagnosis of abruption...
January 1, 2018: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/29754448/periodontal-infection-with-porphyromonas-gingivalis-induces-preterm-birth-and-lower-birth-weight-in-rats
#2
Shanshan Liang, Hongyu Ren, Haiying Guo, Wenyan Xing, Chang Liu, Yaoting Ji, Han Jiang, Ping Zhang, Minquan Du
Preterm birth (PTB), accompanied by low birth weight (LBW) or not, is a syndrome with tremendous risk factors and long-term health consequences for children. In recent decades, overwhelming studies have shown that periodontitis contributes to prematurity and LBW. This study was conducted to determine the link between maternal periodontitis and the pathogenesis of PTB and/or LBW through a rat infection model induced by Porphyromonas gingivalis, an important periodontopathic bacterium. The murine model was established by surgically ligating the left mandibular 1st molars and inoculating with P...
May 13, 2018: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29743041/plasma-inflammatory-and-immune-proteins-as-predictors-of-intra-amniotic-infection-and-spontaneous-preterm-delivery-in-women-with-preterm-labor-a-retrospective-study
#3
Hyunsoo Park, Kyo Hoon Park, Yu Mi Kim, Song Yi Kook, Se Jeong Jeon, Ha-Na Yoo
BACKGROUND: We investigated whether various inflammatory and immune proteins in plasma predict intra-amniotic infection and imminent preterm delivery in women with preterm labor and compared their predictive ability with that of amniotic fluid (AF) interleukin (IL)-6 and serum C-reactive protein (CRP). METHODS: This retrospective cohort study included 173 consecutive women with preterm labor who underwent amniocentesis for diagnosis of infection and/or inflammation in the AF...
May 9, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29709964/bacterial-culture-negative-subclinical-intra-amniotic-infection-can-be-detected-by-bacterial-16s-ribosomal-dna-amplifying-polymerase-chain-reaction
#4
Sachi Morimoto, Hirokazu Usui, Tatsuya Kobayashi, Eiji Katou, Shunji Goto, Hirokazu Tanaka, Makio Shozu
Comprehensive analysis of bacterial DNA enhanced our understanding of the maternal microbiome and its disturbance in preterm birth, although clinical utility of these techniques remains to be determined. We examined whether broad-range polymerase technique is useful for detection of culture-negative intra-amniotic infection (IAI). Pregnant women who underwent amniocentesis for the management of preterm birth with or without the premature rupture of membranes. Bacterial 16S ribosomal DNA in the amniotic fluid was detected by polymerase chain reaction (PCR) using primers for a sequence shared by Ureaplasma, Mycoplasma, and other bacteria...
April 27, 2018: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29691387/fetal-demise-and-failed-antibody-therapy-during-zika-virus-infection-of-pregnant-macaques
#5
Diogo M Magnani, Thomas F Rogers, Nicholas J Maness, Nathan D Grubaugh, Nathan Beutler, Varian K Bailey, Lucas Gonzalez-Nieto, Martin J Gutman, Núria Pedreño-Lopez, Jaclyn M Kwal, Michael J Ricciardi, Tereance A Myers, Justin G Julander, Rudolf P Bohm, Margaret H Gilbert, Faith Schiro, Pyone P Aye, Robert V Blair, Mauricio A Martins, Kathrine P Falkenstein, Amitinder Kaur, Christine L Curry, Esper G Kallas, Ronald C Desrosiers, Pascal J Goldschmidt-Clermont, Stephen S Whitehead, Kristian G Andersen, Myrna C Bonaldo, Andrew A Lackner, Antonito T Panganiban, Dennis R Burton, David I Watkins
Zika virus (ZIKV) infection of pregnant women is associated with pathologic complications of fetal development. Here, we infect pregnant rhesus macaques (Macaca mulatta) with a minimally passaged ZIKV isolate from Rio de Janeiro, where a high rate of fetal development complications was observed. The infection of pregnant macaques with this virus results in maternal viremia, virus crossing into the amniotic fluid (AF), and in utero fetal deaths. We also treated three additional ZIKV-infected pregnant macaques with a cocktail of ZIKV-neutralizing human monoclonal antibodies (nmAbs) at peak viremia...
April 24, 2018: Nature Communications
https://www.readbyqxmd.com/read/29686267/amniotic-fluid-c-reactive-protein-as-a-predictor-of-infection-in-caesarean-section-a-feasibility-study
#6
Zbigniew Marchocki, Angela Vinturache, Kevin Collins, Paddy O' Reilly, Keelin O'Donoghue
This study evaluated the feasibility of maternal C-reactive protein (CRP) in amniotic fluid (AF) as a predictor of post-partum infection in women who undergo emergency or elective caesarean section (CS). AF bacterial culture and levels of hs-CRP in maternal serum and AF were evaluated in Day 0 and three days thereafter (Day 3) in 79 women undergoing CS. Univariate analyses assessed the clinical and demographic characteristics, whereas the ROC curves assessed the feasibility of hs-CRP as marker of inflammation in women who undergo CS...
April 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29685081/longitudinal-trajectory-of-vulvovaginal-candidiasis-trichomoniasis-and-bacterial-vaginosis-during-pregnancy-as-well-as-the-impact-on-pregnancy-outcome-a-preliminary-study
#7
Cheng-Yang Hu, Feng-Li Li, Xiao-Guo Hua, Wen-Jiang, Xiu-Jun Zhang
OBJECTIVES: The aims of this study were to describe the course of vulvovaginal candidiasis (VVC), trichomoniasis, and bacterial vaginosis (BV) in pregnancy and to explore the association between these longitudinal changes and pregnancy outcomes. METHODS: A total of 793 pregnant women were enrolled at the first trimester of pregnancy and were followed prospectively twice at the second and third trimester. VVC, trichomoniasis, and BV were evaluated at each trimester of pregnancy...
April 23, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29668332/neurological-complications-of-zika-virus-infection
#8
Francisco Javier Carod-Artal
Zika virus (ZIKV) disease is a vector-borne infectious disease transmitted by Aedes mosquitoes. Recently, ZIKV has caused outbreaks in most American countries. Areas covered: Publications about neurological complications of ZIKV infection retrieved from pubmed searchers were reviewed, and reference lists and relevant articles from review articles were also examined. Vertical/intrauterine transmission leads to congenital infection and causes microcephaly and congenital ZIKV syndrome. ZIKV preferentially infects human neural progenitor cells and triggers cell apoptosis...
May 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29663900/congenital-toxoplasmosis-in-tunisia-prenatal-and-neonatal-diagnosis-and-postnatal-follow-up-of-35-cases
#9
Boudaouara Yosr, Aoun Karim, Maatoug Rania, Souissi Olfa, Bouratbine Aïda, Ben Abdallah Rym
Congenital toxoplasmosis (CT) results from transplacental passage of Toxoplasma gondii to the fetus during acute maternal infection. Our study aims to report clinical and biological patterns of 35 cases of CT diagnosed at the department of the Parasitology of the Pasteur Institute of Tunis and to access the performance of prenatal and early postnatal diagnosis techniques. Serological screening of maternal infection was performed by Immunoglobulin (Ig) M and IgG detection and IgG avidity determination. Prenatal diagnosis was based on both Toxoplasma DNA detection in the amniotic fluid and monthly ultrasound examinations...
April 16, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29661198/adverse-effects-of-maternal-enterovirus-infection-on-the-pregnancy-outcome-a-prospective-and-retrospective-pilot-study
#10
Z Khediri, C Vauloup-Fellous, A Benachi, J M Ayoubi, L Mandelbrot, O Picone
BACKGROUND: Enteroviruses account for about one billion infections worldwide each year, the majority remain asymptomatic. Data on enterovirus infections during pregnancy appear to be very rare. Several cases have been reported in the literature of fetal and neonatal complications attributed to these viruses, but prospective data on these infections during pregnancy are not available. OBJECTIVE: To estimate the prevalence of enterovirus infections in febrile syndromes in pregnant women, and in case of in utero fetal death (IUFD)...
April 16, 2018: Virology Journal
https://www.readbyqxmd.com/read/29660299/infection-induced-thrombin-production-a-potential-novel-mechanism-for-preterm-premature-rupture-of-membranes-pprom
#11
Liping Feng, Terrence K Allen, William P Marinello, Amy P Murtha
BACKGROUND: Preterm premature rupture of membranes (PPROM) is a leading contributor to maternal and neonatal morbidity and mortality. Epidemiologic and experimental studies have demonstrated that thrombin causes fetal membrane weakening and subsequently PPROM. Although blood is suspected as the likely source of thrombin in fetal membranes and amniotic fluid of patients with PPROM, this has not been proven. Ureaplasma Parvum (U. parvum) is emerging as a pathogen involved in prematurity, including PPROM, but until now, prothrombin production directly induced by bacteria in fetal membranes has not been described...
April 13, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29626984/the-proteome-of-fetal-fluids-in-mares-with-experimentally-induced-placentitis
#12
S C Loux, B A Ball
INTRODUCTION: Placental inflammation (placentitis) is one of the leading causes of late-term abortion in mares. Although prognosis is good assuming early diagnosis and treatment, diagnostics are limited. METHODS: To better characterize the disease and identify potential biomarkers, we analyzed the proteome of fetal fluids (amniotic and allantoic) in both control mares (n = 5) and mares with experimentally-induced placentitis (n = 5) using LTQ-Orbitrap mass-spectrometry...
April 2018: Placenta
https://www.readbyqxmd.com/read/29619446/isolation-and-identification-of-brucella-suis-in-pigs-as-zoonotic-disease-in-endemic-areas-of-east-java-indonesia
#13
Emy Koestanti S, Wiwik Misaco, Sri Chusniati, Lilik Maslachah
Background: Brucellosis in pigs at East Java Indonesia has not only cause great economic losses due to a decrease in productivity of livestock but also are zoonotic. Infection on free brucelosis pigs were initially begun with the infected pigs both male and female, or the use of superior male pigs together. The elimination of the disease either on a group or population is considered as the most effective way to prevent the spread of the disease in pigs. Prevention efforts mainly addressed to vaccination, sanitary maintenace and government policy...
2018: African Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29549721/analysis-of-cytokines-ifn-%C3%AE-tnf-%C3%AE-tgf-%C3%AE-and-nitric-oxide-in-amniotic-fluid-and-serum-of-pregnant-women-with-toxoplasmosis-in-southern-brazil
#14
Ariella Andrade Marchioro, Cristiane Maria Colli, Carla Zangari de Souza, Suelen Santos da Silva, Bruna Tiaki Tiyo, Fernanda F Evangelista, Lourenco Higa, Ivete Conchon-Costa, Ana Lúcia Falavigna-Guilherme
This study detected and compared the levels of IFN-γ, TNF-α, TGF-β and nitric oxide (NO) in amniotic fluid (AF) and serum of pregnancies with acute toxoplasmosis, Southern Brazil. It also was compared the levels of the same mediators in the serum of pregnancies in acute and chronic toxoplasmosis with non-infected. Serological investigation, anti-T gondii IgM and IgG, of the 67 pregnancies was determined by Elisa MEIA. Forty two were uninfected, eight in chronic phase and 17 in acute phase. Among the acute phase, seven agreed to amniocentesis...
June 2018: Cytokine
https://www.readbyqxmd.com/read/29500850/the-immunophenotype-of-amniotic-fluid-leukocytes-in-normal-and-complicated-pregnancies
#15
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Derek Miller, Yaozhu Leng, Bogdan Panaitescu, Pablo Silva, Jonathan Faro, Ali Alhousseini, Navleen Gill, Sonia S Hassan, Chaur-Dong Hsu
PROBLEM: The immune cellular composition of amniotic fluid is poorly understood. Herein, we determined: 1) the immunophenotype of amniotic fluid immune cells during the second and third trimester in the absence of intra-amniotic infection/inflammation; 2) whether amniotic fluid T cells and ILCs display different phenotypical characteristics to that of peripheral cells; and 3) whether the amniotic fluid immune cells are altered in women with intra-amniotic infection/inflammation. METHOD OF STUDY: Amniotic fluid samples (n = 57) were collected from 15 to 40 weeks of gestation in women without intra-amniotic infection/inflammation...
April 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29494891/maternal-immune-activation-induced-by-lipopolysaccharide-triggers-immune-response-in-pregnant-mother-and-fetus-and-induces-behavioral-impairment-in-adult-rats
#16
Lutiana Roque Simões, Gustavo Sangiogo, Michael Hikaru Tashiro, Jaqueline S Generoso, Cristiano Julio Faller, Diogo Dominguini, Gustavo Antunes Mastella, Giselli Scaini, Vijayasree Vayalanellore Giridharan, Monique Michels, Drielly Florentino, Fabricia Petronilho, Gislaine Zilli Réus, Felipe Dal-Pizzol, Alexandra I Zugno, Tatiana Barichello
Evidence suggest that prenatal immune system disturbance contributes largely to the pathophysiology of neuropsychiatric disorders. We investigated if maternal immune activation (MIA) could induce inflammatory alterations in fetal brain and pregnant rats. Adult rats subjected to MIA also were investigated to evaluate if ketamine potentiates the effects of infection. On gestational day 15, Wistar pregnant rats received lipopolysaccharide (LPS) to induce MIA. After 6, 12 and 24 h, fetus brain, placenta, and amniotic fluid were collected to evaluate early effects of LPS...
May 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29476868/a-new-lamp-based-assay-for-the-molecular-diagnosis-of-toxoplasmosis-comparison-with-a-proficient-pcr-assay
#17
Emmanuelle Varlet-Marie, Yvon Sterkers, Marina Perrotte, Patrick Bastien
Toxoplasmosis is generally a benign infection caused by the protozoan parasite Toxoplasma gondii but can have severe consequences in fetuses of mothers infected during pregnancy (congenital toxoplasmosis) and immunocompromised individuals. PCR-based diagnostic tests have become crucial for its diagnosis. However, this molecular diagnosis essentially relies upon laboratory-developed methods and suffers from a lack of standardization, leading to great variation in methods and performance among laboratories. With the need for accreditation of clinical microbiological laboratories, the use of commercial PCR kits has become an attractive alternative; but thorough evaluation of newly commercialized kits by proficient groups is necessary before any recommendation can be made to parasitology laboratories by health authorities or learned societies...
May 2018: International Journal for Parasitology
https://www.readbyqxmd.com/read/29444982/the-unique-features-of-proteins-depicting-the-chicken-amniotic-fluid
#18
Mylène Da Silva, Clara Dombre, Aurélien Brionne, Philippe Monget, Magali Chessé, Marion De Pauw, Maryse Mills, Lucie Combes-Soia, Valérie Labas, Nicolas Guyot, Yves Nys, Sophie Rehault-Godbert
In many amniotes, the amniotic fluid is depicted as a dynamic milieu that participates in the protection of the embryo (cushioning, hydration, and immunity). However, in birds, the protein profile of the amniotic fluid remains unexplored, even though its proteomic signature is predicted to differ compared to human's. In fact, unlike humans, chicken amniotic fluid does not collect excretory products and its protein composition strikingly changes at mid-development due to the massive inflow of egg white proteins, which are thereafter swallowed by the embryo to support its growth...
February 14, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29434245/galectin-3-plays-an-important-role-in-preterm-birth-caused-by-dental-infection-of-porphyromonas-gingivalis
#19
Mutsumi Miyauchi, Min Ao, Hisako Furusho, Chanbora Chea, Atsuhiro Nagasaki, Shinnichi Sakamoto, Toshinori Ando, Toshihiro Inubushi, Katsuyuki Kozai, Takashi Takata
Dental infection is risk for preterm birth (PTB) through unclear mechanisms. We established a dental infection-induced PTB mouse model, in which Porphyromonas gingivalis (P.g.) induced PTB by 2 days. We analysed pathogenic factors contributing to PTB and their effects on trophoblasts in vitro. TNF-α, IL-8, and COX-2 were upregulated in P.g.-infected placenta. Galectin-3 (Gal-3), an immune regulator, was significantly upregulated in placenta, amniotic fluid, and serum. In vitro, P.g.-lipopolysaccharide (P.g...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29425317/human-cervical-mucus-plugs-exhibit-insufficiencies-in-antimicrobial-activity-towards-group-b-streptococcus
#20
Jay Vornhagen, Phoenicia Quach, Verónica Santana-Ufret, Varchita Alishetti, Alyssa Brokaw, Blair Armistead, Hai Qing Tang, James W MacDonald, Theo K Bammler, Kristina M Adams Waldorf, Niels Uldbjerg, Lakshmi Rajagopal
Preterm birth is a leading cause of neonatal mortality and lacks an effective therapy. Ascending microbial infections from the lower genital tract lead to infection of the placenta, amniotic fluid, and fetus causing preterm birth or stillbirth. Directly in the path of an ascending infection is the cervical mucus plug (CMP), a dense mucoid structure in the cervical canal with potential antimicrobial properties. In this study, we aimed to define the components of CMP responsible for antimicrobial activity against a common lower genital tract organism associated with preterm birth and stillbirths, namely, group B streptococcus (GBS)...
April 23, 2018: Journal of Infectious Diseases
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