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https://www.readbyqxmd.com/read/28326518/chorionic-thickness-and-plgf-concentrations-as-early-predictors-of-small-for-gestational-age-birth-weight-in-a-low-risk-population
#1
Anna Gąsiorowska, Marek Pietryga, Agnieszka Zawiejska, Piotr Dydowicz, Katarzyna Ziółkowska, Hubert Wolski, Jacek Brązert
OBJECTIVES: SGA is associated with higher incidence of postnatal complications, including suboptimal neurodevelopment and increased cardiovascular risk. Screening for SGA, carried out at 11-13 (+ 6d) gestational weeks enables to reduce or completely eliminate the above mentioned complications. The aim of this study was to assess the correlation between chorionic thickness, concentration of PIGF protein and foetal birth weight in a single low-risk pregnancy. MATERIAL AND METHODS: The study included 76 patients at 11-13 (+ 6d) gestational weeks, monitored throughout preg-nancy...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28320252/the-impact-of-laser-surgery-on-angiogenic-and-anti-angiogenic-factors-in-twin-twin-transfusion-syndrome-a-prospective-study
#2
Andrew H Chon, Emiliano R Chavira, Melissa L Wilson, Sue A Ingles, Arlyn Llanes, Ramen H Chmait
OBJECTIVE: To examine the effect of laser surgery on angiogenic and anti-angiogenic factors in patients with twin-twin transfusion syndrome (TTTS). METHODS: Cases of TTTS and uncomplicated monochorionic diamniotic twin pregnancies between 16-26 weeks' gestation were prospectively enrolled into the study. Maternal blood samples were obtained to measure angiogenic factors (vascular endothelial growth factor-A (VEGF), placental-derived growth factor (PlGF), endothelin) and anti-angiogenic factors (soluble fms-like tyrosine kinase (sFlt-1), soluble endoglin (sEng), sFlt-1/PlGF ratio)...
March 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28319199/a-computational-analysis-of-in-vivo-vegfr-activation-by-multiple-co-expressed-ligands
#3
Lindsay E Clegg, Feilim Mac Gabhann
The splice isoforms of vascular endothelial growth A (VEGF) each have different affinities for the extracellular matrix (ECM) and the coreceptor NRP1, which leads to distinct vascular phenotypes in model systems expressing only a single VEGF isoform. ECM-immobilized VEGF can bind to and activate VEGF receptor 2 (VEGFR2) directly, with a different pattern of site-specific phosphorylation than diffusible VEGF. To date, the way in which ECM binding alters the distribution of isoforms of VEGF and of the related placental growth factor (PlGF) in the body and resulting angiogenic signaling is not well-understood...
March 20, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28314990/an-apparent-clinical-pharmacokinetic-drug-drug-interaction-between-bevacizumab-and-the-anti-placental-growth-factor-monoclonal-antibody-ro5323441-via-a-target-trapping-mechanism
#4
Ka Wang, Franziska Schaedeli Stark, Tilman Schlothauer, Angelika Lahr, Valerie Cosson, Jianguo Zhi, Kai Habben, Jean Tessier, Eginhard Schick, Roland F Staack, Oliver Krieter
PURPOSE: RO5323441 is a humanized anti-placental growth factor (PlGF) monoclonal antibody that has shown preclinical activity in several cancer models. The objective of this analysis is to examine the pharmacokinetic (PK) results from four Phase I studies that have been conducted with RO5323441 (n = 61) and to report an apparent drug-drug interaction observed when RO5323441 was administered in combination with bevacizumab. METHODS: The four Phase I studies were a multiple-ascending dose study in 23 patients with solid tumors (Study 1), an open-label study in seven patients with colorectal/ovarian cancer (Study 2), a sorafenib combination study in nine patients with hepatocellular carcinoma (Study 3), and a bevacizumab combination study in 22 patients with recurrent glioblastoma (Study 4)...
March 17, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28314983/dual-cutoff-of-sflt-1-plgf-ratio-in-the-stratification-of-preeclampsia-a-systematic-review-and-meta-analysis
#5
REVIEW
Mutong Zhao, Zhiqing Zhu, Chongdong Liu, Zhenyu Zhang
PURPOSE: To systematically review the approach of using two independent sFlt-1/PlGF cutoffs that has better sensitivity (cutoff-sen) and specificity (cutoff-spe) separately for risk stratification in the detection of preeclampsia. METHODS: PubMed and Embase databases and reference lists were searched up to June 2016. Inclusion criteria were blood samples for sFlt-1/PlGF with separate cutoffs (cutoff-sen and cutoff-spe) provided. Six relevant studies were identified...
March 17, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28301573/panel-of-three-novel-serum-markers-predicts-liver-stiffness-and-fibrosis-stages-in-patients-with-chronic-liver-disease
#6
Marcin Krawczyk, Simone Zimmermann, Georg Hess, Robert Holz, Marc Dauer, Jochen Raedle, Frank Lammert, Frank Grünhage
Latest data suggest that placental growth factor (PLGF), growth differentiation factor-15 (GDF-15) and hepatic growth factor (HGF) are involved in hepatic fibrogenesis. Diagnostic performance of these markers for non-invasive liver fibrosis prediction was evaluated based on liver histology and stiffness. In total 834 patients were recruited. Receiver-operating-characteristics were used to define cut-offs for markers correlating to fibrosis stages. Odds-ratios were calculated for the presence/absence of fibrosis/cirrhosis and confirmed in the sub-group of patients phenotyped by elastography only...
2017: PloS One
https://www.readbyqxmd.com/read/28299499/evaluation-of-vitreous-levels-of-advanced-glycation-end-products-and-angiogenic-factors-as-biomarkers-for-severity-of-diabetic-retinopathy
#7
Makiko Katagiri, Jun Shoji, Noriko Inada, Satoshi Kato, Shigehiko Kitano, Yasuko Uchigata
BACKGROUND/AIMS: Glyceraldehyde-derived advanced glycation end products (glycer-AGE; also called Toxic-AGE [TAGE]) play a crucial role in the pathogenesis of diabetic angiopathy. However, the relationships between vitreous glycer-AGE levels and diabetic retinopathy (DR) severity, and between glycer-AGE levels and the levels of other angiogenic factors remain unknown. We investigated the correlation between levels of vitreous biomarkers, including glycer-AGE and angiogenic factors (vascular endothelial growth factor [VEGF], interleukin [IL]-8, leptin, placental growth factor [PlGF], endoglin, and fibroblast growth factor [FGF]-2) in patients with DR, using three DR staging groups...
March 15, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28295782/multicenter-screening-for-preeclampsia-by-maternal-factors-and-biomarkers-at-11-13-weeks-gestation-comparison-to-nice-guidelines-and-acog-recommendations
#8
Neil O' Gorman, David Wright, Liona C Poon, Daniel L Rolnik, Argyro Syngelaki, Mercedes de Alvarado, Ilma F Carbone, Vivien Dutemeyer, Madgalena Fiolna, Alex Frick, Natalia Karagiotis, Sofia Mastrodima, Catalina de Paco Matallana, George Papaioannou, Andrea Pazos, Walter Plasencia, Kypros H Nicolaides
OBJECTIVE: To compare the performance of screening for preeclampsia (PE) based on risk factors from the medical history, as recommended by NICE and ACOG, with the method proposed by the Fetal Medicine Foundation (FMF), which uses Bayes theorem to combine the a priori risk from maternal factors, derived by a multivariable logistic model, with the results of various combinations of biophysical and biochemical measurements. METHODS: This was a prospective multicenter study of screening for PE in 8,775 singleton pregnancies at 11-13 weeks' gestation...
March 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28295773/a-study-protocol-for-the-prospective-validation-study-screening-programme-for-pre-eclampsia-spree
#9
Min Yi Tan, Lemonia Koutoulas, David Wright, Kypros H Nicolaides, Liona C Poon
INTRODUCTION: Pre-eclampsia (PE), which affects about 2% of pregnancies, is a major cause of maternal and perinatal morbidity and mortality. Early detection of PE can improve pregnancy outcome by providing timely intervention and closer monitoring. The current guideline from the National Institute for Health and Care Excellence (NICE) recommends that at the booking visit, women identified with one major risk factor or more than one moderate risk factor for PE should be advised to take low-dose aspirin daily from 12 weeks until the birth of the baby...
March 13, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28295158/first-trimester-ultrasound-tests-alone-or-in-combination-with-first-trimester-serum-tests-for-down-s-syndrome-screening
#10
REVIEW
S Kate Alldred, Yemisi Takwoingi, Boliang Guo, Mary Pennant, Jonathan J Deeks, James P Neilson, Zarko Alfirevic
BACKGROUND: Down's syndrome occurs when a person has three, rather than two copies of chromosome 21; or the specific area of chromosome 21 implicated in causing Down's syndrome. It is the commonest congenital cause of mental disability and also leads to numerous metabolic and structural problems. It can be life-threatening, or lead to considerable ill health, although some individuals have only mild problems and can lead relatively normal lives. Having a baby with Down's syndrome is likely to have a significant impact on family life...
March 15, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28292023/green-tea-and-its-anti-angiogenesis-effects
#11
REVIEW
Bahman Rashidi, Mehrnoush Malekzadeh, Mohammad Goodarzi, Aria Masoudifar, Hamed Mirzaei
The development of new blood vessels from a pre-existing vasculature (also known as angiogenesis) is required for many physiological processes including embryogenesis and post-natal growth. However, pathological angiogenesis is also a hallmark of cancer and many ischaemic and inflammatory diseases. The pro-angiogenic members of the VEGF family (vascular endothelial growth factor family), VEGF-A, VEGF-B, VEGF-C, VEGF-D and placental growth factor (PlGF), and the related receptors, VEGFR-1, VEGFR-2 and VEGFR-3 have a central and decisive role in angiogenesis...
March 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28285686/pilot-phase-ii-study-of-metronomic-chemotherapy-in-combination-with-bevacizumab-in-patients-with-advanced-non-squamous-non-small-cell-lung-cancer
#12
Benjamin S Jones, Mary S Jerome, Deborah Miley, Bradford E Jackson, Mollie R DeShazo, Vishnu V B Reddy, Karan P Singh, Olivia C Brown, Francisco Robert
INTRODUCTION: The goal of this study was to explore the efficacy and tolerability of metronomic chemotherapy, a novel anti-angiogenic treatment strategy, in combination with bevacizumab in patients with advanced non-small cell lung cancer (NSCLC). METHODS: Subjects with newly diagnosed stage IV NSCLC were treated with 4-week cycles of paclitaxel 80mg/m(2) and gemcitabine 300mg/m(2) weekly for three weeks, plus bevacizumab 10mg/kg every two weeks. Radiologic assessments were performed every 8 weeks...
April 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28267633/sclerostin-stimulates-angiogenesis-in-human-endothelial-cells
#13
Angela Oranger, Giacomina Brunetti, Graziana Colaianni, Roberto Tamma, Claudia Carbone, Luciana Lippo, Giorgio Mori, Paolo Pignataro, Nunzio Cirulli, Roberta Zerlotin, Biagio Moretti, Angela Notarnicola, Domenico Ribatti, Maria Grano, Silvia Colucci
Sclerostin, negative regulator of bone formation, has been originally known as an osteocyte product. Recently, it has been also detected in hypertrophic chondrocytes, distinctive cells of avascular cartilage which is invaded by capillaries and then replaced by vascularized bone. Thus, we hypothesized that sclerostin, in addition to its role already known, may exert an angiogenic activity. We first proved that sclerostin increased the proliferation of human umbilical vein endothelial cells (HUVECs), and next, by using the chicken chorioallantoic membrane (CAM) in vivo assay, we demonstrated that it exerts an angiogenic activity similar to that of vascular endothelial growth factor (VEGF)...
March 3, 2017: Bone
https://www.readbyqxmd.com/read/28263753/the-maternal-plasma-proteome-changes-as-a-function-of-gestational-age-in-normal-pregnancy-a-longitudinal-study
#14
Roberto Romero, Offer Erez, Eli Maymon, Piya Chaemsaithong, Zhonghui Xu, Percy Pacora, Tinnakorn Chaiworapongsa, Bogdan Done, Sonia S Hassan, Adi L Tarca
OBJECTIVE: Pregnancy is accompanied by dramatic physiologic changes in maternal plasma proteins. Characterization of the maternal plasma proteome in normal pregnancy is an essential step for understanding changes to predict pregnancy outcome. The objective of this study was to describe maternal plasma proteins that change in abundance with advancing gestational age, and determine biological processes that are perturbed in normal pregnancy. MATERIALS AND METHODS: A longitudinal study included 43 normal pregnancies that had a term delivery of an infant who was appropriate for gestational age (AGA) without maternal or neonatal complications...
March 2, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28220848/elevated-expression-of-placental-growth-factor-is-associated-with-airway-wall-vascular-remodelling-and-thickening-in-smokers-with-asthma
#15
Dong Wu, Tianwen Lai, Yalian Yuan, Min Chen, Jun Xia, Wen Li, Guihai Pan, Binfan Yuan, Quanchao Lv, Yanyu Li, Dongmin Li, Bin Wu
The increased expression of placental growth factor (PlGF) in chronic obstructive pulmonary disease and allergy-related asthma suggests its role in the pathogenesis of these diseases. In asthmatic smokers, airway remodelling is accompanied by an accelerated decline in lung function. However, whether PlGF contributes to the persistent airflow obstruction and vascular remodelling typically seen in asthmatic smokers is unknown. In this study we measured lung function, airway-wall thickening, and PlGF levels in serum and induced sputum in 74 asthmatic and 42 healthy smokers and never-smokers...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28208844/spectrum-of-factors-triggering-endothelial-dysfunction-in-pih
#16
Visala Sree Jammalamadaga, Philips Abraham
INTRODUCTION: Pre-eclampsia (PE) is a major cause of maternal and fetal/neonatal mortality and morbidity. The aetiology and pathogenesis of PE is yet to be completely understood. Evidence shows that, Endothelial Dysfunction (ED) plays a pivotal role in the genesis of this multi-system disorder that develops in PE and eclampsia. AIM: To determine the circulating levels of factors Malondialdehyde (MDA), Ferric Reducing Ability of Plasma-α (FRAP), Tumour Necrosis Factor (TNF-α), sFlt-1, VEGF, PlGF, Nitric Oxide (NO) that influence the ED...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28199996/importance-of-timing-first-trimester-placental-growth-factor-and-use-of-serial-first-trimester-placental-growth-factor-measurements-in-screening-for-preeclampsia
#17
Beatrice Mosimann, Sofia Amylidi-Mohr, Katrin Höland, Daniel Surbek, Lorenz Risch, Luigi Raio
OBJECTIVE: The aims of this study were to test whether the performance of first-trimester placental growth factor (PlGF) in screening for preterm preeclampsia (PE) is gestational age dependent and to assess the value of serial first-trimester PlGF measurements in discriminating women at risk for PE. METHODS: PlGF was measured in women with singleton pregnancies at their first antenatal visit at 8+0 to 10+6 and additionally at 11+0 to 14+0 weeks of gestation. The difference in absolute values of serial PlGF measurements was expressed as Δ-PlGF...
February 16, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28199380/the-effects-of-pravastatin-on-the-normal-human-placenta-lessons-from-ex-vivo-models
#18
Adelina Balan, Irit Szaingurten-Solodkin, Shani S Swissa, Valeria Feinshtein, Mahmoud Huleihel, Gershon Holcberg, Doron Dukler, Ofer Beharier
INTRODUCTION: Research in animal models and preliminary clinical studies in humans support the use of pravastatin for the prevention of preeclampsia. However, its use during pregnancy is still controversial due to limited data about its effect on the human placenta and fetus. METHODS: In the present study, human placental cotyledons were perfused in the absence or presence of pravastatin in the maternal reservoir (PraM). In addition, placental explants were treated with pravastatin for 5, 24 and 72 h under normoxia and hypoxia...
2017: PloS One
https://www.readbyqxmd.com/read/28194443/sustained-inflammation-after-pericyte-depletion-induces-irreversible-blood-retina-barrier-breakdown
#19
Shuntaro Ogura, Kaori Kurata, Yuki Hattori, Hiroshi Takase, Toshina Ishiguro-Oonuma, Yoonha Hwang, Soyeon Ahn, Inwon Park, Wataru Ikeda, Sentaro Kusuhara, Yoko Fukushima, Hiromi Nara, Hideto Sakai, Takashi Fujiwara, Jun Matsushita, Masatsugu Ema, Masanori Hirashima, Takashi Minami, Masabumi Shibuya, Nobuyuki Takakura, Pilhan Kim, Takaki Miyata, Yuichiro Ogura, Akiyoshi Uemura
In the central nervous system, endothelial cells (ECs) and pericytes (PCs) of blood vessel walls cooperatively form a physical and chemical barrier to maintain neural homeostasis. However, in diabetic retinopathy (DR), the loss of PCs from vessel walls is assumed to cause breakdown of the blood-retina barrier (BRB) and subsequent vision-threatening vascular dysfunctions. Nonetheless, the lack of adequate DR animal models has precluded disease understanding and drug discovery. Here, by using an anti-PDGFRβ antibody, we show that transient inhibition of the PC recruitment to developing retinal vessels sustained EC-PC dissociations and BRB breakdown in adult mouse retinas, reproducing characteristic features of DR such as hyperpermeability, hypoperfusion, and neoangiogenesis...
February 9, 2017: JCI Insight
https://www.readbyqxmd.com/read/28167687/prediction-of-preeclampsia-using-the-soluble-fms-like-tyrosine-kinase-1-to-placental-growth-factor-ratio-a-prospective-cohort-study-of-unselected-nulliparous-women
#20
Ulla Sovio, Francesca Gaccioli, Emma Cook, Martin Hund, D Stephen Charnock-Jones, Gordon C S Smith
We sought to assess the ratio of sFlt-1 (soluble fms-like tyrosine kinase 1) to PlGF (placental growth factor) in maternal serum as a screening test for preeclampsia in unselected nulliparous women with a singleton pregnancy. We studied 4099 women recruited to the POP study (Pregnancy Outcome Prediction) (Cambridge, United Kingdom). The sFlt-1:PlGF ratio was measured using the Roche Cobas e411 platform at ≈20, ≈28, and ≈36 weeks of gestational age (wkGA). Screen positive was defined as an sFlt-1:PlGF ratio >38, but higher thresholds were also studied...
April 2017: Hypertension
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