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https://www.readbyqxmd.com/read/28105727/placental-dysfunction-is-associated-with-altered-microrna-expression-in-pregnant-women-with-low-folate-status
#1
Bernadette C Baker, Fiona L Mackie, Samantha C Lean, Susan L Greenwood, Alexander Ep Heazell, Karen Forbes, Rebecca L Jones
SCOPE: Low maternal folate status during pregnancy increases the risk of delivering small for gestational age (SGA) infants, but the mechanistic link between maternal folate status, SGA and placental dysfunction is unknown. microRNAs (miRNA) are altered in pregnancy pathologies and by folate in other systems. We hypothesized low maternal folate status causes placental dysfunction, mediated by altered miRNA expression. METHODS AND RESULTS: A prospective observational study recruited pregnant adolescents, and assessed third trimester folate status and placental function...
January 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28099695/low-maternal-pregnancy-associated-plasma-protein-a-during-the-first-trimester-of-pregnancy-and-pregnancy-outcomes
#2
Marja Kaijomaa, Leena Rahkonen, Veli-Matti Ulander, Esa Hämäläinen, Henrik Alfthan, Helene Markkanen, Seppo Heinonen, Vedran Stefanovic
OBJECTIVE: To assess the association between pregnancy-associated placental protein A (PAPP-A) levels in the first trimester of pregnancy and adverse pregnancy outcomes. METHOD: A retrospective study included data from a group of patients in the first trimester of pregnancy with PAPP-A levels below 0.3 multiples of median who attended the Helsinki University Hospital, Finland, between January 1, 2009 and December 31, 2012; an age-matched control group of patients with PAPP-A levels 0...
January 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28035757/papp-a-a-promising-therapeutic-target-for-healthy-longevity
#3
REVIEW
Cheryl A Conover, Claus Oxvig
Pregnancy-associated plasma protein-A (PAPP-A) is a proteolytic enzyme that was discovered to increase local insulin-like growth factor (IGF) availability for receptor activation through cleavage of inhibitory IGF binding proteins (IGFBPs). Reduced IGF signaling has been associated with increased lifespan and healthspan. Therefore, inhibition of PAPP-A represents a novel approach to indirectly decrease the availability of bioactive IGF. Here, we will review data in support of PAPP-A as a therapeutic target to promote healthy longevity...
December 29, 2016: Aging Cell
https://www.readbyqxmd.com/read/28034366/pregnancy-associated-plasma-protein-a-and-its-role-in-cardiovascular-disease-biology-experimental-clinical-evidences-and-potential-therapeutic-approaches
#4
Francesca Ziviello, Stefano Conte, Giovanni Cimmino, Ferdinando Carlo Sasso, Bruno Trimarco, Plinio Cirillo
Pregnancy-Associated Plasma Protein-A (PAPP-A) is a zinc-binding metalloproteinase protein produced by placental syncytio-trophoblasts and secreted into the maternal circulation where its concentration progressively increases until term. In recent years, PAPP-A has been studied for its potential involvement in cardiovascular (CV) disease. However, all those studies did not provide a clear view to identify the pathophysiological links between PAPP-A plasma levels and the occurrence of CV events. In this review, starting from a complete description of PAPP-A structure and biology, we present an updated overview of experimental as well as clinical evidence on the role of this metalloproteinase in CV disease...
December 30, 2016: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28027672/relationship-between-first-trimester-aneuploidy-screening-test-serum-analytes-and-placenta-accreta
#5
Barış Büke, Hatice Akkaya, Sibel Demir, Sermet Sağol, Deniz Şimşek, Güneş Başol, Burcu Barutçuoğlu
OBJECTIVE: The aim of this study is to determine whether there is a relationship between first trimester serum pregnancy-associated plasma protein A (PAPP-A) and free beta human chorionic gonadotropin (fβhCG) MoM values and placenta accreta in women who had placenta previa. STUDY DESIGN: A total of 88 patients with placenta previa who had first trimester aneuploidy screening test results were enrolled in the study. Nineteen of these patients were also diagnosed with placenta accreta...
December 27, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28012202/association-of-serum-papp-a-levels-in-first-trimester-with-small-for-gestational-age-and-adverse-pregnancy-outcomes-systematic-review-and-meta-analysis
#6
R Katie Morris, Ashwini Bilagi, Pooja Devani, Mark D Kilby
OBJECTIVES: To determine association, and predictive ability, of first trimester maternal serum pregnancy associated plasma protein A (PAPP-A) with adverse pregnancy outcomes. METHOD: Searches of Medline, Embase and CINAHL (inception-September 2015) for studies including pregnant women with first trimester PAPP-A and assessment of pregnancy outcomes.Study characteristics, quality and results extracted. Meta-analysis of odds ratios (OR), and likelihood ratios (LR) and 95% confidence intervals (CI)...
December 23, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28006080/crown-rump-length-audit-plots-with-the-use-of-operator-specific-papp-a-and-%C3%A3-hcg-median-mom
#7
Joan Sabria, Laura Guirado, Isabel Miró, Maria Dolors Gómez-Roig, Antoni Borrell
OBJECTIVE: Audit the crown-rump length (CRL) measurements taken at 11-13 weeks scan, using operator-specific median multiples of the median (MoM) for pregnancy-associated plasma protein-A (PAPP-A) and free ß-human chorionic gonadotropin (ß-hCG) plots, to identify deviations potentially related to a systematic CRL bias. METHODS: Study population included consecutive singleton pregnancies undergoing first trimester combined screening, scanned by sonologists with at least 100 scans, during the 2011-12 period...
December 22, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27958633/nasal-bone-in-screening-for-t21-at-11-13-6-weeks-of-gestation-a-multicenter-study
#8
Piotr Węgrzyn, Bartosz Czuba, Dawid Serafin, Wojciech Cnota, Mariusz Dubiel, Marek Mączka, Dariusz Zarotyński, Aleksandra Ruci, Mirosław Wielgoś, Krzysztof Sodowski, Dariusz Borowski
OBJECTIVES: Trisomy 21 is one of the most common chromosomal defects diagnosed prenatally. Screening for Down syndrome is based on maternal age, measurement of crown-rump length, nuchal translucency and fetal heart rate, together with free β-hCG and PAPP-A at 11 to 13 + 6 weeks. Introduction of additional ultrasound marker of trisomy 21 (evaluation of the nasal bone) may result in increased DR and decreased invasive diagnostic testing rates (FPR). MATERIAL AND METHODS: Ultrasound scan with NB evaluation was performed in 5814 fetuses during routine screening for chromosomal defects at 11 to 13 + 6 weeks of gestation...
2016: Ginekologia Polska
https://www.readbyqxmd.com/read/27939474/evaluation-of-fetal-hypermethylated-rassf1a-in-pre-eclampsia-and-its-relationship-with-placental-protein-13-pregnancy-associated-plasma-protein-a-and-urine-protein
#9
Seema Saraswathy, Kavita Sahai, Tribhuvan Pal Yadav, Devendra Arora, Suman Lata Mendiratta, Samar Husain Naqvi, Shilpie Biswas, Manu Krishnan, Kurian Mathew Abraham
OBJECTIVES: Cell free fetal DNA (cffDNA) and its hypermethylated RASSF1A gene signify a recent advancement in non-invasive prenatal diagnosis of feto-placental anomalies like pre-eclampsia. The study uses hypermethylated RASSF1A gene to quantify cffDNA and to assess its relationship with placental and urine proteins in pre-eclampsia cases. DESIGN AND METHODS: DNA was isolated from plasma samples of clinically diagnosed cases of pre-eclampsia (n=103) and normal pregnancy (n=616) from 21weeks of gestation...
October 2016: Pregnancy Hypertension
https://www.readbyqxmd.com/read/27939466/the-utility-of-first-trimester-uterine-artery-doppler-placental-volume-and-papp-a-levels-alone-and-in-combination-to-predict-preeclampsia
#10
Burak Yücel, Ali Gedikbasi, Oznur Dündar, Yusuf Olgac, Dogukan Yıldırım, Gokhan Yıldırım, Ibrahim Polat
In this study, we aimed to evaluate the detection of pre-eclampsia (PE) by integrating uterine artery Doppler, placental volume, and pregnancy-associated plasma protein A (PAPP-A) levels in the first trimester. We prospectively recruited 602 women that underwent 11-13weeks' aneuploidy screening. The mean pulsatility index (PI) of the uterine arteries and the placental volume were measured by ultrasonography. Measurement of PAPP-A levels has been performed at the same day of ultrasonographic examinations. The 90th percentile of uterine artery PI and the 10th percentile of placental volume and PAPP-A levels were used as cut-offs...
October 2016: Pregnancy Hypertension
https://www.readbyqxmd.com/read/27935854/second-trimester-maternal-serum-markers-in-the-prediction-of-preeclampsia
#11
Qiong Luo, Xiujun Han
AIM: To determine whether late second-trimester maternal serum biomarkers are useful for the prediction of preeclampsia during the third trimester, a case-control study including 33 preeclamptic and 71 healthy pregnancies was conducted. Maternal serum concentrations of placental protein 13 (PP13), pregnancy-associated plasma protein (PAPP-A), pentraxin3 (PTX3), soluble FMS-like tyrosine kinase-1 (sFlt-1), myostatin and follistatin-like-3 (FSLT-3) were measured at 24-28 weeks' gestation...
December 9, 2016: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/27923276/association-between-maternal-circulating-25-hydroxyvitamin-d-concentration-and-placental-volume-in-the-first-trimester
#12
Çiğdem Yayla Abide, Meryem Kurek Eken, Işıl Turan, Enis Özkaya, Oya Pekin, Ateş Karateke
OBJECTIVES: We aimed to assess placental volume and placental mean gray value in vitamin D deficiency and healthy placentas in the first trimester of pregnancy using three-dimensional (3D) ultrasonography and Virtual Organ Computer-aided Analysis (VOCAL). METHODS: This prospective cross sectional study comprised 274 patients, divided into two groups according to the presence or absence of vitamin D deficiency (<20ng/ml deficient, n = 153,>20 ng/ml not deficient, n= 121) in the first trimester of pregnancy...
December 6, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27904516/serum-pregnancy-associated-plasma-protein-a-levels-in-the-first-second-and-third-trimester-of-pregnancy-relation-to-newborn-anthropometric-parameters-and-maternal-tobacco-smoking
#13
Magdalena Chełchowska, Joanna Gajewska, Joanna Mazur, Jadwiga Ambroszkiewicz, Tomasz M Maciejewski, Jerzy Leibschang
INTRODUCTION: The purpose of this study was to evaluate the associations of the first, second and third trimester serum pregnancy-associated plasma protein A (PAPP-A) concentrations with neonatal anthropometric parameters. The effect of tobacco smoking during pregnancy on PAPP-A level was also studied. MATERIAL AND METHODS: One hundred and fifty healthy pregnant women were divided into smoking and tobacco-abstinent groups. Serum PAPP-A level was measured with the KRYPTOR rapid random-access immunoassay analyzer...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27887594/first-trimester-serum-placental-growth-factor-and-hyperglycosylated-human-chorionic-gonadotropin-are-associated-with-pre-eclampsia-a-case-control-study
#14
Elina Keikkala, Sini Koskinen, Piia Vuorela, Hannele Laivuori, Jarkko Romppanen, Seppo Heinonen, Ulf-Håkan Stenman
BACKGROUND: To study whether maternal serum hyperglycosylated human chorionic gonadotropin (hCG-h) improves first trimester prediction of pre-eclampsia when combined with placental growth factor (PlGF), pregnancy-associated plasma protein-A (PAPP-A) and maternal risk factors. METHODS: Gestational-age-adjusted concentrations of hCG, hCG-h, PlGF and PAPP-A were analysed in serum samples by time-resolved immunofluorometric assays at 8-13 weeks of gestation. The case-control study included 98 women who developed pre-eclampsia, 25 who developed gestational hypertension, 41 normotensive women with small-for-gestational-age (SGA) infants and 177 controls...
November 25, 2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27881939/can-pregnancy-associated-plasma-protein-a-be-a-marker-for-the-assessment-of-atherosclerosis-risk-in-patients-with-chronic-plaque-psoriasis
#15
Mualla Polat, Guler Bugdayci, Asli Sahin, Hatice Kaya, Tuna Sezer, Serkan Ozturk
INTRODUCTION: Psoriasis is an immune-mediated chronic inflammatory dermatosis. Several studies have shown that patients with psoriasis have a much greater risk of cardiovascular diseases than the normal population. The chronic inflammation observed in psoriasis is thought to have a role in the development of atherosclerosis and vascular endothelial injury. AIM: To examine serum pregnancy-associated plasma protein-A (PAPP-A) levels, which has been regarded as a marker of early stage atherosclerosis in patients with psoriasis that do not have concurrent conventional cardiovascular risk markers...
October 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/27881070/pregnancy-specific-%C3%AE-1-glycoproteins-combined-biomarker-roles-structure-function-relationships-and-implications-for-drug-design
#16
Nurbubu T Moldogazieva, Innokenty M Mokhosoev, Alexander A Terentiev
BACKGROUND: Pregnancy specific β1-glycoproteins (PSGs) have long been recognized as trophoblast quality and embryo viability markers. However, biological roles of PSGs remain obscure, and structure/function relationships to other feto-placental proteins as well as implications for drug design have not been reviewed. This review summarizes and discusses advances in 45-year studies of PSGs with focus on the latest achievements and the challenges for future investigations. METHODS: Literature search was performed to review the majority of recent PSG studies with emphasis on usage of high-throughput integrated proteomic profiling technologies, systems biology and bioinformatics approaches that enhance novel biomarker and drug target discovery as well as protein structure/activity analysis...
November 22, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27866393/potentially-pathogenic-circulating-autoantibodies-to-cardiac-troponin-are-present-in-hemodialysis-patients
#17
Helen J Jefferies, Risto Tertti, Saara Wittfooth, James O Burton, Kaj Metsärinne, Kim Pettersson, Christopher W McIntyre
Introduction Repetitive dialysis-induced cardiac injury is associated with elevated troponin levels, inflammation, and longitudinal reduction in cardiac function. Pathogenic autoantibodies to cardiac troponins (cTnAAb) produce inflammatory cardiomyopathy in murine models. This study aimed to explore the possibility that analogous autoimmune processes might occur in hemodialysis (HD) patients, by initially investigating cTnAAb prevalence, and exploring potential links with HD-induced myocardial stunning. Methods In 130 prevalent HD patients from two centers (Derby, UK; Turku, Finland), cTnAAb (immunoassay) and cardiac troponins were quantified...
November 20, 2016: Hemodialysis International
https://www.readbyqxmd.com/read/27854388/prediction-of-stillbirth-from-placental-growth-factor-at-11-13-weeks
#18
R Akolekar, M Machuca, M Mendes, V Paschos, K H Nicolaides
OBJECTIVES: To investigate whether the addition of maternal serum placental growth factor (PlGF) measured at 11-13 weeks' gestation improves the performance of screening for stillbirths that is achieved by a combination of maternal factors and first-trimester biomarkers such as maternal serum pregnancy-associated plasma protein-A (PAPP-A), fetal ductus venosus pulsatility index for veins (DV-PIV) and uterine artery pulsatility index (UtA-PI) and to evaluate the performance of screening with this model for all stillbirths and those due to impaired placentation and unexplained causes...
November 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27837083/a-first-trimester-biomarker-panel-for-predicting-the-development-of-gestational-diabetes
#19
Antonio Farina, Elizabeth Eklund, Dalila Bernabini, Mariangela Paladino, Francesca Righetti, Giuseppe Monti, Geralyn Lambert-Messerlian
OBJECTIVE: Serum markers measured early in pregnancy have been associated with the later diagnosis of gestational diabetes mellitus (GDM). This study aims to explore the performance of a panel of first-trimester biochemical markers for the prediction of GDM. METHODS: A case-control study was performed that included 12 women who developed GDM and 60 controls matched for maternal and gestational age at blood collection. Levels of pregnancy-associated plasma protein A (PAPP-A), soluble endoglin, pregnancy protein 13, and adiponectin (Adipo) were measured on residual sera used in first-trimester screening for Down syndrome...
November 11, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27835040/developing-a-new-algorithm-for-first-and-second-trimester-preeclampsia-screening-in-twin-pregnancies
#20
Ron Maymon, Alla Trahtenherts, Ran Svirsky, Yaakov Melcer, Liora Madar-Shapiro, Esther Klog, Hamutal Meiri, Howard Cuckle
OBJECTIVES: Construct a new preeclampsia predicting algorithm in twins. METHODS: Twins sampled at 10-13 and 16-20 gestational weeks and their marker values were log transformed into multiples of the gestation-specific medians (MoMs) for singletons and entered into a new logistic regression model with/without prior risk factors. RESULTS: The cohort included 9 PE (18 samples) and 96 unaffected cases (175 samples) twin pregnant women. The algorithm constructed of PlGF, PAPP-A, PP13, Doppler UTPI, and MAP with prior risk factors generated an area under the curve of 0...
November 11, 2016: Hypertension in Pregnancy
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