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https://www.readbyqxmd.com/read/29034302/comparison-of-two-immunoassay-systems-for-hcg%C3%AE-and-papp-a-in-prenatal-screening-for-trisomy-21-18-and-13-in-the-first-trimester
#1
Anna Elise Engell, Elin Rebecka Carlsson, Finn Stener Jørgensen, Steen Sørensen
OBJECTIVES: The biochemical serum markers free β-human chorionic gonadotropin (hCGβ) and pregnancy associated plasma protein A (PAPP-A), used in screening for trisomy 21 (T21), trisomy 18 (T18), and trisomy 13 (T13) during the first trimester, can be measured on different laboratory instruments e.g. Kryptor (Brahms) and Cobas (Roche). We compared the performance of these two analytical instruments when used for first trimester combined testing. DESIGN AND METHODS: Serum samples from 944 singleton pregnant women attending for first trimester combined testing were routinely assayed for hCGβ and PAPP-A on Kryptor, and re-analyzed on Cobas...
December 2017: Pract Lab Med
https://www.readbyqxmd.com/read/28992321/pregnancy-associated-plasma-protein-a-predicts-survival-in-end-stage-renal-disease-confounding-and-modifying-effects-of-cardiovascular-disease-body-composition-and-inflammation
#2
Erik Nilsson, Yang Cao, Bengt Lindholm, Ayane Ohyama, Juan Jesus Carrero, Abdul Rashid Qureshi, Peter Stenvinkel
Background: High pregnancy-associated plasma protein-A (PAPP-A) levels are linked to atherosclerosis and associate with increased mortality in prevalent dialysis patients. We investigated associations of PAPP-A, measured at dialysis initiation, with cardiovascular disease (CVD), CVD risk factors and mortality in incident dialysis patients, and explored if body composition and inflammation modulated these associations. Methods: Baseline plasma PAPP-A levels, inflammation biomarkers and body composition, using dual-energy X-ray absorptiometry, were measured in 286 incident dialysis patients...
July 24, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28964327/performance-of-first-trimester-biochemical-markers-and-mean-arterial-pressure-in-prediction-of-early-onset-pre-eclampsia
#3
Jaana Nevalainen, Teemu Korpimaki, Heikki Kouru, Mikko Sairanen, Markku Ryynanen
OBJECTIVE: To develop a predictive risk model for early-onset pre-eclampsia (EO-PE) using maternal characteristics, combined screening markers, previously reported biomarkers for PE and mean arterial pressure (MAP). METHODS: This retrospective study was conducted at Oulu University hospital between 2006 and 2010. Maternal serum from first trimester combined screening was further analyzed for alpha fetoprotein (AFP), placental growth factor (PlGF), soluble tumor necrosis factor receptor-1 (sTNFR1), retinol binding protein-4 (RBP4), a disintegrin and metalloprotease-12 (ADAM12), soluble P-selectin (sP-selectin), follistatin like-3 (FSTL3), adiponectin, angiopoietin-2 (Ang-2) and sex hormone binding globulin (SHBG)...
October 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28964325/physiological-parameters-regulating-circulating-levels-of-the-igfbp-4-stanniocalcin-2-papp-a-axis
#4
Grigorios Panagiotou, Athanasios D Anastasilakis, Georgios Kynigopoulos, Elpida C Skouvaklidou, Zacharias G Saridakis, Jagriti Upadhyay, Eirini Pagkalidou, Aggeliki Apostolou, Thomai Karagiozoglou-Lampoudi, Christos S Mantzoros
BACKGROUND: Insulin Growth Factor Binding Protein 4 (IGFBP-4), Stanniocalcin-2 (STC-2) and Pregnancy-Associated Plasma Protein-A (PAPP-A) have a well-documented involvement in several physiological functions in humans but predictors of their circulating levels remain largely unknown. We aimed to identify anthropometric and biochemical parameters associated with circulating levels of IGFBP-4/STC-2/PAPP-A axis (ISPa) cross-sectionally and to study their day-night variation and their regulation in response to mixed meal and exercise...
October 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28958763/the-relationship-between-environmental-exposures-and-hormonal-abnormalities-in-pregnant-women-an-epidemiological-study-in-yazd-iran
#5
Sahar Ghale Askari, Masomeh Khatbasreh, Mohammad Hassan Ehrampoush, Mohammad Hassan Sheikhha, Hadi Eslami, Mahmoud Taghavi, Samira Shahrokhi, Sodeh Andishmand
PROBLEM: The process of industrialization and lifestyle changes have gradually exposed human ‎societies to a larger number of environmental risk factors, which may cause hormonal ‎abnormalities and congenital anomalies. BACKGROUND: The current study aimed to investigate the relationship ‎between environmental factors and hormonal abnormalities among pregnant women in Yazd, ‎Iran. METHODS: A hundred participants were randomly selected from among a group of pregnant women...
September 25, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/28945869/effects-of-prednisolone-on-serum-and-tissue-fluid-igf-i-receptor-activation-and-post-receptor-signaling-in-humans
#6
Nilani Ramshanker, Maiken Aagaard, Rikke Hjortebjerg, Thomas Schmidt Voss, Niels Møller, Jens Otto Lunde Jørgensen, Niels Jessen, Peter Bjerring, Nils Erik Magnusson, Mette Bjerre, Claus Oxvig, Jan Frystyk
Context: Short-term glucocorticoid exposure increases serum IGF-I concentrations, but antagonizes IGF-I tissue signaling. The underlying mechanisms remain unknown. Objective: To identify at which levels glucocorticoid inhibits IGF-I signaling. Design and methods: Nineteen healthy males received prednisolone (37.5 mg daily) and placebo for 5 days in a randomized, double-blinded, placebo-controlled cross-over study. Serum was collected on day 1, 3 and 5, abdominal skin suction blister fluid (SBF; ≈interstitial fluid) on day 5 (n=9) together with muscle biopsies (n=19)...
September 13, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28942305/role-of-components-of-the-insulin-like-growth-factor-system-in-the-early-stages-of-ovarian-follicular-persistence-in-cattle
#7
F M Rodríguez, N C Gareis, G J Hein, N R Salvetti, A N Amweg, E Huber, A F Stassi, H H Ortega, F Rey
Cystic ovarian disease (COD) is one of the main causes of infertility in dairy cattle. It has been postulated that the insulin-like growth factor (IGF) system may contribute to follicular persistence and development of COD. The initiation of the IGF response is a result of interactions between IGF-binding proteins (IGFBPs) and IGFBP proteases, mainly pregnancy-associated plasma protein A (PAPP-A). IGFBPs bind IGFs with high affinity and consequently regulate their access to IGF receptors (IGFRs). The aim of this research was to determine variations in components of the IGF system in the ovaries of cows with persistent follicles induced by long-term administration of progesterone...
August 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28925570/first-trimester-screening-based-on-ultrasound-and-cfdna-vs-first-trimester-combined-screening-a-randomized-controlled-study
#8
Karl Oliver Kagan, Fabrina Sroka, Jiri Sonek, Harald Abele, Kai Lüthgens, Maximilian Schmid, Philipp Wagner, Sara Brucker, Diethelm Wallwiener, Markus Hoopmann
OBJECTIVE: Prospective randomized trial to compare the performance of first trimester combined screening (FTCS) with an approach that uses the combination of a detailed ultrasound examination and cfDNA analysis. METHODS: Pregnant women with a normal first-trimester ultrasound examination at 11 to 13 weeks' gestation (fetal NT ≤3.5 mm and no fetal defects) were randomized into two groups. In the first group, the risk of aneuploidy was assessed using FTCS based on the most recent FMF UK algorithm...
September 19, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28921586/down-syndrome-maternal-serum-markers-in-oocyte-donation-and-other-assisted-reproductive-technologies
#9
Aurore Bonnin, Françoise Muller, Marie-Victoire Senat, Corinne Sault, Armelle Galland, Joëlle Taieb, Sophie Dreux, Jean Bouyer, Alexandra Benachi
OBJECTIVE: Because maternal serum markers (PAPP-A, hCGβ, and AFP) used for Down syndrome (DS) screening have been described as predictors of obstetrical complications and because assisted reproductive technology (ART) pregnancies are known to be at increased risk for obstetrical complications, it is unclear whether or not correction factors should be applied to the calculated risk of DS. The purpose of this study was to evaluate DS maternal serum markers in oocyte donation (OD) and ART pregnancies in comparison with natural pregnancies...
September 16, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28911149/insulin-like-growth-factor-bioactivity-stanniocalcin-2-pregnancy-associated-plasma-protein-a-and-igf-binding-protein-4-in-pleural-fluid-and-serum-from-patients-with-pulmonary-disease
#10
COMPARATIVE STUDY
Ulrick Skipper Espelund, Mette Bjerre, Rikke Hjortebjerg, Torben Riis Rasmussen, Anders Lundby, Andreas Hoeflich, Birgitte Holst Folkersen, Claus Oxvig, Jan Frystyk
Context: Members of the insulin-like growth factor (IGF) system are primarily produced in the liver and secreted into the circulation, but they are also produced, recruited, and activated locally in tissues. Objective: To compare activity and concentrations of IGF system components in pleural fluid and blood. Design: Pathological pleural fluid, secondary to lung cancer or nonmalignant disease, and matching blood samples were collected from 24 patients ages 66...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28889785/validation-of-fetal-medicine-foundation-algorithm-for-prediction-of-preeclampsia-in-the-first-trimester-in-an-unselected-brazilian-population
#11
Guilherme Antonio Rago Lobo, Paulo Martin Nowak, Ana Paula Panigassi, Angélia Iara Felipe Lima, Edward Araujo Júnior, Luciano Marcondes Machado Nardozza, David Baptista Silva Pares
OBJECTIVE: To evaluate the predictive performance of the Fetal Medicine Foundation (FMF) algorithm for prediction of preeclampsia (PE) between 11 and 14 weeks of gestation in an unselected Brazilian population. METHODS: We conducted a prospective cohort study with 617 singleton pregnancies of unselected risk. Biophysical markers (mean pulsatility index, mean arterial pressure) and biochemical markers (placental growth factor (PLGF) and PAPP-A) were inserted into the FMF software and converted into multiples of the median (MoM)...
September 10, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28883908/increased-levels-of-oxidative-stress-markers-soluble-cd40-ligand-and-carotid-intima-media-thickness-reflect-acceleration-of-atherosclerosis-in-male-patients-with-ankylosing-spondylitis-in-active-phase-and-without-the-classical-cardiovascular-risk-factors
#12
Agata Stanek, Armand Cholewka, Tomasz Wielkoszyński, Ewa Romuk, Karolina Sieroń, Aleksander Sieroń
OBJECTIVE: The primary aim of the study was to assess levels of oxidative stress markers, soluble CD40 ligand (sCD40L), serum pregnancy-associated plasma protein-A (PAPP-A), and placental growth factor (PlGF) as well as carotid intima-media thickness (IMT) in patients with ankylosing spondylitis (AS) with active phase without concomitant classical cardiovascular risk factors. MATERIAL AND METHODS: The observational study involved 96 male subjects: 48 AS patients and 48 healthy ones, who did not differ significantly regarding age, BMI, comorbid disorders, and distribution of classical cardiovascular risk factors...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28854436/pregnancy-associated-plasma-protein-a2-in-hemodialysis-patients-significance-for-prognosis
#13
Marta Kalousová, Sylvie Dusilová-Sulková, Aleš A Kuběna, Oskar Zakiyanov, Kateřina Levová, Markéta Bocková, Erika Gedeonová, Xue Chadtová Song, Maria Laura Ermini, Tomáš Špringer, Jiří Homola, Vladimír Tesař, Tomáš Zima
BACKGROUND: Pregnancy-associated plasma protein A (PAPP-A) is associated with adverse outcome of long-term hemodialysis patients (HD). The aim of the study was to test whether its homolog pregnancy-associated plasma protein A2 (PAPP-A2) can be detected in serum of HD patients and to define its significance. METHODS: The studied group consisted of 102 long-term HD patients and 25 healthy controls. HD patients were prospectively followed up for five years (2009-2014)...
2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28852057/placental-dysfunction-underlies-increased-risk-of-fetal-growth-restriction-and-stillbirth-in-advanced-maternal-age-women
#14
Samantha C Lean, Alexander E P Heazell, Mark R Dilworth, Tracey A Mills, Rebecca L Jones
Pregnancies in women of advanced maternal age (AMA) are susceptible to fetal growth restriction (FGR) and stillbirth. We hypothesised that maternal ageing is associated with utero-placental dysfunction, predisposing to adverse fetal outcomes. Women of AMA (≥35 years) and young controls (20-30 years) with uncomplicated pregnancies were studied. Placentas from AMA women exhibited increased syncytial nuclear aggregates and decreased proliferation, and had increased amino acid transporter activity. Chorionic plate and myometrial artery relaxation was increased compared to controls...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28838266/recurrence-of-extreme-serum-analytes-in-consecutive-pregnancies-and-association-with-obstetrical-outcomes
#15
Shelly Soni, David A Krantz, Meir Greenberg, Nidhi Vohra, Burton Rochelson
OBJECTIVE: To evaluate if presence of extreme maternal serum biochemical analytes recurs in consecutive pregnancies. We hypothesized that presence of >1 extreme analyte in prior pregnancy is associated with increased risk of adverse pregnancy outcome in subsequent pregnancy. METHODS: Retrospective cohort study of singleton pregnancies evaluated and delivered in 2 consecutive pregnancies (2011-2015). Adverse outcomes were defined as indicated preterm delivery before 37 completed weeks due to preeclampsia, fetal growth restriction or other complications...
September 12, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28835236/impact-of-copper-oxide-nanomaterials-on-differentiated-and-undifferentiated-caco-2-intestinal-epithelial-cells-assessment-of-cytotoxicity-barrier-integrity-cytokine-production-and-nanomaterial-penetration
#16
Victor C Ude, David M Brown, Luca Viale, Nilesh Kanase, Vicki Stone, Helinor J Johnston
BACKGROUND: Copper oxide nanomaterials (CuO NMs) are exploited in a diverse array of products including antimicrobials, inks, cosmetics, textiles and food contact materials. There is therefore a need to assess the toxicity of CuO NMs to the gastrointestinal (GI) tract since exposure could occur via direct oral ingestion, mucocillary clearance (following inhalation) or hand to mouth contact. METHODS: Undifferentiated Caco-2 intestinal cells were exposed to CuO NMs (10 nm) at concentrations ranging from 0...
August 23, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28833651/major-cardiac-defects-and-placental-dysfunction-at-11-13-weeks-gestation
#17
Ilaria Fantasia, Dila Kasapoglu, Taner Kasapoglu, Argyro Syngelaki, Ranjit Akolekar, Kypros H Nicolaides
OBJECTIVES: To investigate the relationship between fetal major cardiac defects and markers of placental perfusion and function. METHODS: This was a prospective screening study in singleton pregnancies at 11-13 weeks' gestation. Uterine artery pulsatility index (UTPI), serum pregnancy associated plasma protein-A (PAPP-A) and placental growth factor (PLGF) were measured and the values were converted into multiples of the normal median (MoM). Median MoM values in fetuses with isolated major cardiac defects were compared to those in fetuses without major defects...
August 18, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28815596/use-of-first-trimester-placenta-growth-factor-concentration-to-predict-hypertensive-disorders-of-pregnancy-in-a-low-risk-asian-population
#18
Manisha Kumar, Karuna Sharma, Shalini Singh, Ritu Singh, Abha Singh, Jayashree Bhattacharjee
OBJECTIVE: To determine the value of placenta growth factor (PlGF) for predicting hypertensive disorders of pregnancy (HDP) in a low-risk population when used either alone or in combination with other markers. METHODS: A prospective observational cohort study was conducted among women with singleton pregnancy in the first trimester in New Delhi, India, between October 1, 2013, and September 30, 2016. First-trimester measures included maternal history, body mass index (BMI), mean arterial pressure (MAP), Doppler uterine artery pulsatility index, and serum levels of biomarkers (including PlGF)...
August 17, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28801361/one-level-up-abnormal-proteolytic-regulation-of-igf-activity-plays-a-role-in-human-pathophysiology
#19
REVIEW
Jesús Argente, Julie A Chowen, Luis A Pérez-Jurado, Jan Frystyk, Claus Oxvig
The discovery of a mutation in a specific gene can be very important for determining the pathophysiology underlying the disease of a patient and may also help to decide the best treatment protocol on an individual basis. However, sometimes the discovery of mutations in new proteins advances our comprehension in a more widespread manner. The growth hormone (GH)/insulin-like growth factor (IGF)-1 axis is fundamental for systemic growth, but is also involved in many other important processes. Our understanding of this system in physiology and pathophysiology has advanced throughout the years with each discovery of mutations in members of this axis...
October 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28792712/external-quality-assessment-of-first-trimester-prenatal-biochemical-screening-in-china
#20
Shishi Zhang, Xiaoyan Zhang, Wei Wang, Falin He, Kun Zhong, Shuai Yuan, Zhiguo Wang
BACKGROUND: Free β subunit of human chorionic gonadotropin (free β-hCG) and pregnancy-associated plasma protein A (PAPP-A) are two important biomarkers in first-trimester prenatal screening. This study intended to reflect their analytical performance in clinical laboratories and main platforms of the 2015 External Quality Assessment (EQA) scheme for the first-trimester biochemical screening in China. METHODS: Ten lyophilized EQA samples, divided into two sets and analyzed in two cycles 20151 and 20152, were distributed to each participant in 2015...
July 1, 2017: Clinical Laboratory
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