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Preterm birth biomarker

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https://www.readbyqxmd.com/read/29136068/electrokinetically-operated-microfluidic-devices-for-integrated-immunoaffinity-monolith-extraction-and-electrophoretic-separation-of-preterm-birth-biomarkers
#1
Mukul Sonker, Ellen K Parker, Anna V Nielsen, Vishal Sahore, Adam T Woolley
Biomarkers are often present in complex biological fluids like blood, requiring multiple, slow sample preparation steps that pose limitations in simplifying analysis. Here we report integrated immunoaffinity extraction and separation devices for analysis of preterm birth biomarkers in a human blood serum matrix. A reactive polymer monolith was used for immobilization of antibodies for selective extraction of target preterm birth biomarkers. Microfluidic immunoaffinity extraction protocols were optimized and then integrated with microchip electrophoresis for separation...
November 14, 2017: Analyst
https://www.readbyqxmd.com/read/29130703/nutritional-practices-in-very-low-birth-weight-infants-a-national-survey
#2
Gerardo Rodríguez-Martínez, Eduardo Narbona, Marcos Linés, María Gormaz, Miguel Sáenz de Pipaón, Ricardo Closa, José Uberos, Carlos Zozaya, María L Couce
BACKGROUND: Significant efforts have been made to improve the nutritional support of very preterm infants. Large surveys may help to know the nutritional practices for preterm infants in neonatal units and identify if they are in line with the current guidelines. METHODS: A multicentre nationwide web-based survey on clinical feeding practices in very low birth weight (VLBW) infants was conducted in tertiary neonatal hospitals that admit infants with a birth weight < 1,500 g and/or a gestational age of < 32 weeks...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29096631/prediction-of-uncomplicated-pregnancies-in-obese-women-a-prospective-multicentre-study
#3
Matias C Vieira, Sara L White, Nashita Patel, Paul T Seed, Annette L Briley, Jane Sandall, Paul Welsh, Naveed Sattar, Scott M Nelson, Debbie A Lawlor, Lucilla Poston, Dharmintra Pasupathy
BACKGROUND: All obese pregnant women are considered at equal high risk with respect to complications in pregnancy and birth, and are commonly managed through resource-intensive care pathways. However, the identification of maternal characteristics associated with normal pregnancy outcomes could assist in the management of these pregnancies. The present study aims to identify the factors associated with uncomplicated pregnancy and birth in obese women, and to assess their predictive performance...
November 3, 2017: BMC Medicine
https://www.readbyqxmd.com/read/29092751/a-time-based-analysis-of-inflammation-in-infants-at-risk-of-bronchopulmonary-dysplasia
#4
Sandrine Leroy, Elsa Caumette, Chandra Waddington, Audrey Hébert, Rollin Brant, Pascal M Lavoie
OBJECTIVE: To precisely delineate the timing and contribution of inflammation to bronchopulmonary dysplasia (BPD) in preterm infants during the neonatal period. STUDY DESIGN: Longitudinal study of blood inflammatory biomarkers (interleukin [IL]-6, IL-8, and granulocyte colony-stimulating factor) measured between birth and 42 days of age, at high temporal (daily) resolution, in infants born at or below 30 weeks of gestation. Cytokine predictors of BPD at 36 weeks postmenstrual age were adjusted for infant-specific and time-dependent factors, using hierarchical mixed effects regressions models...
October 30, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29073805/comparison-of-the-effectiveness-of-a-pamg-1-test-and-standard-clinical-assessment-in-the-prediction-of-preterm-birth-and-reduction-of-unnecessary-hospital-admissions
#5
Ghassan Lotfi, Saima Faraz, Razan Nasir, Sreenisha Somini, Rasha M Abdeldayem, Raghunandini Koratkar, Nadia Alsawalhi, Abeer Ammar
PURPOSE: The purpose of this study is to first compare the performance of the PAMG-1 biomarker test to that of standard clinical assessment (SCA) for the risk assessment of spontaneous preterm delivery (sPTD) among women with symptoms of preterm labor (PTL) and then calculate the potential impact on unnecessary admission reduction. MATERIALS AND METHODS: Patients of gestational age 24(0/7)-36(6/7) with PTL symptoms, cervical dilatation ≤3 cm, no intercourse within 24 h, and clinically intact membranes were recruited consecutively into this prospective observational study...
October 26, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29055117/can-neutrophil-to-lymphocyte-ratio-predict-late-onset-sepsis-in-preterm-infants
#6
Senem Alkan Ozdemir, Esra Arun Ozer, Ozkan Ilhan, Sumer Sutcuoglu
BACKGROUND: The neutrophil to lymphocyte ratio (NLR) is an easily accessible biomarker that has been reported to represent disease severity in adult trials. The aim of this study was to evaluate the relationship between culture positiveness and NLR in cases where the reason of sepsis was considered, and to foresight an idea about the active agents. METHODS: Preterm infants with birth weights ≤1500 g and/or ≤32 gestational weeks were eligible for this study...
October 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29035757/pulmonary-hypertension-associated-with-bronchopulmonary-dysplasia-in-preterm-infants
#7
REVIEW
Christine B Bui, Merrin A Pang, Arvind Sehgal, Christiane Theda, Jason C Lao, Philip J Berger, Marcel F Nold, Claudia A Nold-Petry
Bronchopulmonary dysplasia (BPD) and BPD-associated pulmonary hypertension (BPD-PH) are chronic inflammatory cardiopulmonary diseases with devastating short- and long-term consequences for infants born prematurely. The immature lungs of preterm infants are ill-prepared to achieve sufficient gas exchange, thus usually necessitating immediate commencement of respiratory support and oxygen supplementation. These therapies are life-saving, but they exacerbate the tissue damage that is inevitably inflicted on a preterm lung forced to perform gas exchange...
October 2, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29031892/altered-angiogenesis-as-a-common-mechanism-underlying-preterm-birth-small-for-gestational-age-and-stillbirth-in-women-living-with-hiv
#8
Andrea L Conroy, Chloe R McDonald, Joel L Gamble, Peter Olwoch, Paul Natureeba, Deborah Cohan, Moses R Kamya, Diane V Havlir, Grant Dorsey, Kevin C Kain
BACKGROUND: Angiogenic processes in the placenta are critical regulators of fetal growth and impact birth outcomes, but there are limited data documenting these processes in HIV-infected women or women from low-resource settings. OBJECTIVE: We sought to determine whether angiogenic factors are associated with adverse birth outcomes in HIV-infected pregnant women started on antiretroviral therapy. STUDY DESIGN: This is a secondary analysis of samples collected as part of a clinical trial randomizing pregnant women infected with HIV to lopinavir/ritonavir-based (n = 166) or efavirenz-based (n = 160) antiretroviral therapy in Tororo, Uganda...
October 12, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29025303/serum-surfactant-protein-d-as-a-marker-for-bronchopulmonary-dysplasia
#9
Suja Vinod, Andrew Gow, Barry Weinberger, Debra Potak, Mark Hiatt, Shaku Chandra, Thomas Hegyi
BACKGROUND: Lung epithelial cells express surfactant protein D (SP-D), a calcium-dependent lectin that plays an important role in antibody-independent pulmonary host defense. Previous studies have shown that it is found in the peripheral circulation in patients with pulmonary disease, likely because of translocation into the blood when lung epithelial barriers are disrupted by inflammation or acute injury. In adults, serum SP-D levels are biomarkers for the progression and severity of chronic lung disease...
October 26, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29017560/effect-of-intra-pregnancy-nonsurgical-periodontal-therapy-on-inflammatory-biomarkers-and-adverse-pregnancy-outcomes-a-systematic-review-with-meta-analysis
#10
Helbert Eustáquio Cardoso da Silva, Cristine Miron Stefani, Nilce de Santos Melo, Adriano de Almeida de Lima, Cassiano Kuchenbecker Rösing, André Luís Porporatti, Graziela De Luca Canto
BACKGROUND: The aim of this systematic review with meta-analysis was to analyze the effects of intra-pregnancy nonsurgical periodontal therapy on periodontal inflammatory biomarkers and adverse pregnancy outcomes. METHODS: On June 5, 2017, we searched PubMed, Cochrane, SCOPUS, Web of Science, LILACS, ProQuest, Open Grey, and Google Scholar databases. Randomized clinical trials in which pregnant women with chronic periodontitis underwent nonsurgical periodontal therapy, compared with an untreated group, tested for inflammatory biomarkers, and followed till delivery were included...
October 10, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28960518/high-sensitivity-c-reactive-protein-concentration-in-young-adults-in-the-helsinki-study-of-very-low-birth-weight-adults
#11
Kai Yin Ho, Rie Goto, Pieta Näsänen-Gilmore, Sture Andersson, Johan G Eriksson, Eero Kajantie, Petteri Hovi
No abstract text is available yet for this article.
September 28, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28947540/in-utero-exposure-to-histological-chorioamnionitis-primes-the-exometabolomic-profiles-of-preterm-cd4-t-lymphocytes
#12
Poojitha Matta, Stacy D Sherrod, Christina C Marasco, Daniel J Moore, John A McLean, Joern-Hendrik Weitkamp
Histological chorioamnionitis (HCA) is an intrauterine inflammatory condition that increases the risk for preterm birth, death, and disability because of persistent systemic and localized inflammation. The immunological mechanisms sustaining this response in the preterm newborn remain unclear. We sought to determine the consequences of HCA exposure on the fetal CD4(+) T lymphocyte exometabolome. We cultured naive CD4(+) T lymphocytes from HCA-positive and -negative preterm infants matched for gestational age, sex, race, prenatal steroid exposure, and delivery mode...
November 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28944158/environmental-chemicals-and-preterm-birth-biological-mechanisms-and-the-state-of-the-science
#13
Kelly K Ferguson, Helen B Chin
PURPOSE OF REVIEW: Preterm birth is a significant worldwide health problem of uncertain origins. The extant body of literature examining environmental contaminant exposures in relation to preterm birth is extensive but results remain ambiguous for most organic pollutants, metals and metalloids, and air pollutants. In the present review we examine recent epidemiologic studies investigating these associations, and identify recent advances and the state of the science. Additionally, we highlight biological mechanisms of action in the pathway between chemical exposures and preterm birth, including inflammation, oxidative stress, and endocrine disruption, that deserve more attention in this context...
March 2017: Current Epidemiology Reports
https://www.readbyqxmd.com/read/28939908/microbiome-profile-of-the-amniotic-fluid-as-a-predictive-biomarker-of-perinatal-outcome
#14
Daichi Urushiyama, Wataru Suda, Eriko Ohnishi, Ryota Araki, Chihiro Kiyoshima, Masamitsu Kurakazu, Ayako Sanui, Fusanori Yotsumoto, Masaharu Murata, Kazuki Nabeshima, Shin'ichiro Yasunaga, Shigeru Saito, Makoto Nomiyama, Masahira Hattori, Shingo Miyamoto, Kenichiro Hata
Chorioamnionitis (CAM), an inflammation of the foetal membranes due to infection, is associated with preterm birth and poor perinatal prognosis. The present study aimed to determine whether CAM can be diagnosed prior to delivery based on the bacterial composition of the amniotic fluid (AF). AF samples from 79 patients were classified according to placental inflammation: Stage III (n = 32), CAM; Stage II (n = 27), chorionitis; Stage 0-I (n = 20), sub-chorionitis or no neutrophil infiltration; and normal AF in early pregnancy (n = 18)...
September 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934718/urinary-bpa-and-phthalate-metabolite-concentrations-and-plasma-vitamin-d-levels-in-pregnant-women-a-repeated-measures-analysis
#15
Lauren E Johns, Kelly K Ferguson, David E Cantonwine, Thomas F McElrath, Bhramar Mukherjee, John D Meeker
BACKGROUND: In addition to its well-established role in maintaining skeletal health, vitamin D has essential regulatory functions in female reproductive and pregnancy outcomes. Phthalates and bisphenol A (BPA) are endocrine disruptors, and previous research has suggested that these chemical agents may disrupt circulating levels of total 25(OH)D in adults. OBJECTIVES: We investigated the relationships between repeated measures of urinary phthalate metabolites and BPA and circulating total 25(OH)D in a prospective cohort of pregnant women...
August 31, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28916946/association-between-placental-polycyclic-aromatic-hydrocarbons-pahs-oxidative-stress-and-preterm-delivery-a-case-control-study
#16
Priyanka Agarwal, Laxmi Singh, Madhu Anand, Ajay Taneja
Polycyclic aromatic hydrocarbons are known to disturb the antioxidant defense system, which may indirectly contribute to induction of early pregnancy in women. Therefore, the present investigation was designed to offer preliminary information about exposure to PAHs by estimating their placental levels and its association with oxidative stress as well as with preterm birth. Placenta tissue samples were drawn after delivery from 84 healthy pregnant women, recruited at a local nursing home of Agra, India, and levels of PAHs were quantified by gas chromatograph equipped with flame ionization detector...
September 15, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28900713/complement-activation-a-threat-to-pregnancy
#17
REVIEW
Guillermina Girardi
Pregnancy poses a challenge for the immune systems of placental mammals. As fetal tissues are semi-allogeneic and alloantibodies that commonly develop in the mother, the fetus and the placenta might be subject to complement-mediated immune attack with the potential risk of adverse pregnancy outcomes. Here, I describe how the use of animal models was pivotal in demonstrating that complement inhibition at the fetomaternal interface is essential for a successful pregnancy. Studies in animals also helped the identification of uncontrolled complement activation as a crucial effector in the pathogenesis of recurrent miscarriages, intrauterine growth restriction, preeclampsia, and preterm birth...
September 12, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28884117/the-role-of-mirnas-as-biomarkers-for-pregnancy-outcomes-a-comprehensive-review
#18
REVIEW
Martina Barchitta, Andrea Maugeri, Annalisa Quattrocchi, Ottavia Agrifoglio, Antonella Agodi
Several studies showed that altered expression of the miRNA-ome in maternal circulation or in placental tissue may reflect not only gestational disorders, such as preeclampsia, spontaneous abortion, preterm birth, low birth weight, or macrosomia, but also prenatal exposure to environmental pollutants. Generally, the relationships between environmental exposure, changes in miRNA expression, and gestational disorders are explored separately, producing conflicting findings. However, validation of tissue-accessible biomarkers for the monitoring of adverse pregnancy outcomes needs a systematic methodological approach that takes also into account early-life environmental exposure...
2017: International Journal of Genomics
https://www.readbyqxmd.com/read/28864022/child-neurodevelopmental-outcomes-following-preterm-and-term-birth-what-can-the-placenta-tell-us
#19
REVIEW
Nicolette A Hodyl, Natalie Aboustate, Tina Bianco-Miotto, Claire T Roberts, Vicki L Clifton, Michael J Stark
A significant proportion of children born preterm will experience some level of neurodevelopmental impairment. Changes in placental function have been observed with many antenatal conditions that are risk factors for preterm birth and/or poor neurodevelopment including fetal growth restriction and in-utero inflammation. This review will highlight placental factors that have been studied to understand the underlying mechanisms and identify biomarkers that lead to poor child neurodevelopmental outcomes. These include changes in gross morphological and histopathological structure and the placental inflammatory response to prenatal infection...
September 2017: Placenta
https://www.readbyqxmd.com/read/28833913/trends-of-urinary-beta-2-microglobulin-levels-and-bronchopulmonary-dysplasia-in-preterm-infants
#20
Yoshio Shima, Sakae Kumasaka, Shigeru Nishimaki
BACKGROUND: The developmental process of bronchopulmonary dysplasia is not identical between very preterm infants born small-for-gestational age and those born appropriate-for-gestational age. In this study, we compared the pattern of the inflammatory response in infants of each group, by measuring urinary beta-2-microglobulin as an alternative, concise, and less- invasive biomarker. METHODS: Urinary beta-2-microglobulin levels and clinical details were examined at birth and 4 weeks of age in 146 very preterm infants...
August 18, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
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