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https://www.readbyqxmd.com/read/28537456/angiogenic-profile-and-smoking-in-the-finnish-genetics-of-pre-eclampsia-consortium-finnpec-cohort
#1
Tiina Jääskeläinen, Sanna Suomalainen-König, Esa Hämäläinen, Kari Pulkki, Jarkko Romppanen, Seppo Heinonen, Hannele Laivuori
Objectives The biological mechanism by which smoking reduces the risk of pre-eclampsia (PE) is unresolved. We studied serum levels of soluble fms-like tyrosine kinase 1 (sFlt-1), placental growth factor (PlGF) and their ratio, in addition to soluble endoglin (sEng) in early and late pregnancy to ascertain whether these factors are altered in women who smoke. Subjects and Methods First trimester serum samples were available from 217 women who later developed PE and 238 women who did not develop PE. Second/third trimester serum samples were available from 174 PE and 54 non-PE women...
May 24, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28514925/factors-affecting-cell-free-dna-fetal-fraction-and-the-consequences-for-test-accuracy
#2
Fergus Perry Scott, Melody Menezes, Ricardo Palma-Dias, Debbie Nisbet, Philip Schluter, Fabricio da Silva Costa, Andrew Cameron McLennan
INTRODUCTION: Biological factors are known to influence the fetal fraction (FF) of cell-free DNA and may also influence the accuracy of non-invasive prenatal testing. MATERIAL AND METHODS: NIPT from 5,267 mixed risk women across three specialist clinics in Australia were analysed. Multivariable regression analysis was used to determine whether maternal characteristics, ultrasound and placental biomarkers affect FF and test accuracy. RESULTS: FF ranged from 4% - 37% (mean 11...
May 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28501276/diagnosis-of-preeclampsia-and-fetal-growth-restriction-with-the-sflt-1-plgf-ratio-diagnostic-accuracy-of-the-automated-immunoassay-kryptor%C3%A2
#3
Lisa Antonia Dröge, Alice Höller, Laura Ehrlich, Stefan Verlohren, Wolfgang Henrich, Frank Holger Perschel
OBJECTIVE: We aimed to characterize the diagnostic accuracy of the Kryptor® assay for sFlt-1 and PlGF in maternal serum samples of uneventful singleton pregnancies and subjects with preeclampsia (PE) and PE-related outcomes such as fetal growth restriction (FGR). Longitudinal reference ranges of the sFlt-1 and PlGF level in the course of normal pregnancies were generated. METHODS: A cohort of subjects with PE and PE-related outcomes including FGR in the third trimester was compared to a cohort of women with uneventful outcome...
April 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/28494189/increased-placental-sflt-1-but-unchanged-plgf-expression-in-late-onset-preeclampsia
#4
Laura Ehrlich, Alice Hoeller, Michaela Golic, Florian Herse, Frank H Perschel, Wolfgang Henrich, Ralf Dechend, Berthold Huppertz, Stefan Verlohren
OBJECTIVE: To investigate whether differences between late-onset preeclampsia (PE) and intrauterine growth restriction (IUGR) can be explained by differential placental expression patters of sFlt-1, Flt-1, and placental growth factor (PlGF). METHODS: Placental tissues and maternal blood samples from seven patients with PE, five IUGR, and seven age-matched controls were studied for mRNA and protein levels as well as protein localization and expression intensity. RESULTS: Placental PlGF mRNA and protein expression were not altered by placental dysfunction while placental villous trophoblast expression intensity of PlGF was increased...
May 11, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28494174/human-endometrial-stromal-cell-plasticity-reversible-sflt1-expression-negatively-coincides-with-decidualization
#5
Hanh N Cottrell, JuanJuan Wu, Bassam H Rimawi, Juan Manuel Duran, Jessica B Spencer, Neil Sidell, Augustine Rajakumar
Preeclampsia (PE) is a major complication of pregnancy in which the placenta is known to have shallow implantation into the uterine decidua. Studies have implicated soluble fms-like tyrosine kinase-1 (sFlt1), a soluble vascular endothelial growth factor (VEGF) receptor protein, in the pathogenesis of PE. sFlt1 has the ability to bind to and neutralize the angiogenic functions of VEGF and placental growth factor (PlGF). The presence of sFlt1 and its action in the endometrium is yet to be determined. We hypothesize that endometrial stromal cells (ESC) at the maternal-fetal interface may play a role in sFlt-1 regulation during pregnancy...
May 11, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28470791/impaired-placentation-in-women-with-chronic-hypertension-that-develop-preeclampsia
#6
Anca M Panaitescu, Ranjit Akolekar, Nicholas Kametas, Argyro Syngelaki, Kypros H Nicolaides
OBJECTIVE: To compare the degree of impaired placentation in pregnancies which develop preeclampsia (PE) in women with and without chronic hypertension (CH). METHODS: The data for this study were derived from prospective screening for adverse pregnancy outcomes in women with singleton pregnancies attending for their first routine hospital visit at 11(+0) -13(+6) weeks' gestation. This visit included recording of maternal characteristics and medical history and measurements of mean arterial pressure (MAP), uterine artery pulsatility index (UTPI), serum placental growth factor (PLGF) and serum pregnancy associated plasma protein-A (PAPP-A)...
May 4, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28455450/microvascular-function-in-pre-eclampsia-is-influenced-by-insulin-resistance-and-an-imbalance-of-angiogenic-mediators
#7
Anshuman Ghosh, Nicholas S Freestone, Nicholas Anim-Nyame, Francesca I F Arrigoni
In preeclampsia, maternal microvascular function is disrupted and angiogenesis is dysfunctional. Insulin resistance that occurs in some pregnancies also pathologically affects microvascular function. We wished to examine the relationship of angiogenic mediators and insulin resistance on microvascular health in pregnancy. We performed a nested, case-control study of 16 women who developed preeclampsia with 17 normal pregnant controls. We hypothesized that the impaired microvascular blood flow in preeclamptic women associated with an increased ratio of the antiangiogenic factors; (s-endoglin [sEng] and soluble fms-like tyrosine kinase-1 [sFlt-1]) and proangiogenic molecule (placental growth factor [PlGF]) could be influenced by insulin resistance...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28447504/placental-growth-factor-plgf-as-an-angiogenic-inflammatory-switcher-lesson-from-early-pregnancy-losses
#8
Hamid Reza Nejabati, Zeinab Latifi, Tohid Ghasemnejad, Amir Fattahi, Mohammad Nouri
Placental growth factor (PlGF) is an angiogenic factor which belongs to vascular endothelial growth factor (VEGF) family. In addition to the angiogenic function of PlGF, in some conditions such as preeclampsia and early pregnancy losses, it can induce inflammatory reactions which could be accompanied with reduced angiogenesis. Hence, it is crucial to investigate inflammatory and angiogenic switching states and understand underlying mechanisms. PlGF is expressed in endometrium, placenta and trophoblast cells and is involved in maturation of uterine NK cells...
April 27, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28444128/low-dose-ionizing-radiation-induces-therapeutic-neovascularization-in-a-pre-clinical-model-of-hindlimb-ischemia
#9
Augusto Ministro, Paula de Oliveira, Raquel J Nunes, André Dos Santos Rocha, Adriana Correia, Tânia Carvalho, José Rino, Pedro Faísca, Jorg D Becker, João Goyri-O'Neill, Filomena Pina, Esmeralda Poli, Bruno Silva-Santos, Fausto Pinto, Marc Mareel, Karine Serre, Susana Constantino Rosa Santos
Aims: We have previously shown that low-dose ionizing radiation (LDIR) induces angiogenesis but there is no evidence that it induces neovascularization in the setting of peripheral arterial disease. Here, we investigated the use of LDIR as an innovative and non-invasive strategy to stimulate therapeutic neovascularization using a model of experimentally induced hindlimb ischemia (HLI). Methods and results: After surgical induction of unilateral HLI, both hindlimbs of female C57BL/6 mice were sham-irradiated or irradiated with four daily fractions of 0...
June 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28429366/analysis-of-transcriptional-activities-of-angiogenic-biomarkers-during-intrauterine-complications-leading-to-preterm-birth
#10
M Rabajdová, R Dudič, P Urban, V Dudičová, P Urdzík, M Mareková
OBJECTIVE: Pre-eclampsia, growth retardation and preterm delivery are the most common reasons leading to increased maternal and perinatal mortality. The increased expression of hypoxia induced factors, such as HIF-1, triggers the overexpression of anti-angiogenic genes. The aim of this study was to determine the transcriptional activity of individual pro- and anti-angiogenic markers (VEGF, HIF-1, sEng, Flt-1, PlGF-1) in maternal blood samples from patients with spontaneous preterm labor, preterm labor in combination with pre-eclampsia and fetal growth restriction in comparison with physiologically terminated pregnancies...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28427434/adenovirus-mediated-cd40l-gene-transfer-increases-teffector-tregulatory-cell-ratio-and-upregulates-death-receptors-in-metastatic-melanoma-patients
#11
A Schiza, J Wenthe, S Mangsbo, E Eriksson, Anders Nilsson, T H Tötterman, A Loskog, G Ullenhag
BACKGROUND AND AIMS: Malignant melanoma is an aggressive tumor sensitive for immunotherapy such as checkpoint blockade antibodies. Still, most patients with late stage disease do not respond, and the side effects can be severe. Stimulation of the CD40 pathway to initiate anti-tumor immunity is a promising alternative. Herein, we demonstrate immune profiling data from melanoma patients treated with an adenovirus-based CD40 ligand gene therapy (AdCD40L). METHODS: Peripheral blood mononuclear cells and plasma were collected from malignant melanoma patients (n = 15) enrolled in a phase I/IIa study investigating intratumoral delivery of AdCD40L with or without low dose cyclophosphamide...
April 20, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28427198/hypoxia-activates-placental-growth-factor-expression-in-lymphatic-endothelial-cells
#12
Laura Tudisco, Augusto Orlandi, Valeria Tarallo, Sandro De Falco
Placental growth factor (PlGF), a proangiogenic member of vascular endothelial growth family, is active during pathological conditions like cancer, metastasis formation and hind limb ischemia and in wound healing. Endothelial cells express PlGF and hypoxia positively modulates in vitro its expression. To verify whether hypoxia modulates PlGF expression in different cellular contexts and in vivo, we first analyzed five human and five mouse cancer cell lines showing that in eight of them hypoxia positively modulates PlGF...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425270/a-new-angiogenesis-prognostic-index-with-vegfa-plgf-and-angiopoietin1-predicts-survival-in-patients-with-advanced-gastric-cancer
#13
Sedef Hande Aktaş, Hakan Ozan Akbulut Yazici, Nurullah Zengin, Halime Nalan Akgün, Zeki Üstüner, Fikri Içli
BACKGROUND/AIM: The role of angiogenic factors in gastric cancer is not clear. We aimed to assess the role of vascular endothelial growth factor A (VEGFA), angiopoietin 1 (Ang-1), and placental growth factor (PlGF) in the prognosis of patients with advanced gastric cancer. MATERIALS AND METHODS: Thirty consecutive patients treated with a modified DCF (docetaxel, cisplatin, and fluorouracil) regimen were included in the study. The plasma VEGFA, Ang-1, and PlGF levels of the patients before treatment and following two cycles of chemotherapy were measured and evaluated as prognostic factors...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28422347/serum-placental-growth-factor-and-soluble-fms-like-tyrosine-kinase-1-at-mid-gestation-in-healthy-women-association-with-small-for-gestational-age-neonates
#14
Itsuko Furuta, Takeshi Umazume, Takashi Kojima, Kentaro Chiba, Kinuko Nakagawa, Ami Hosokawa, Satoshi Ishikawa, Takahiro Yamada, Mamoru Morikawa, Hisanori Minakami
AIM: This study was performed to determine the associations between serum placental growth factor (PlGF) and soluble fms-like tyrosine kinase 1 (sFlt-1) levels at mid-gestation with the risk of small-for-gestational-age (SGA) neonates born at gestational week (GW) ≥ 36 in healthy women. METHODS: PlGF and sFlt-1 concentrations were determined at GW 24-27 in 183 women with births at GW ≥ 36, but without gestational diabetes mellitus and hypertension. RESULTS: Thirteen (7...
April 19, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28420611/characterization-of-the-conbercept-gene-localization-in-dhfr-amplified-cho-cells-using-fluorescence-in-situ-hybridization
#15
Shi Minglei, Lai Weili, Yi Tianhong, Ke Xiao, Zhao Zhihu
Chinese-hamster ovary (CHO) cells are most widely used for mammalian protein expression. After integration into the CHO genome, the exogenous gene may be lost in the process of large-scale protein production due to the removal of related selection pressures. Therefore, it is necessary to test its stability in the genome. Conbercept is a fusion protein that specifically binds to the various isoforms of vascular endothelial growth factor (VEGF)-A, VEGF-B, and placental growth factor (PlGF), thereby exerting anti-angiogenic activities...
April 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28415865/-placental-gene-activity-of-significant-angiogenetic-factors-in-the-background-of-intrauterine-growth-restriction
#16
Péter Kovács, Attila Rab, Imre Szentpéteri, József Gábor Joó, László Kornya
Placental vascular endothelial growth factor A (VEGF-A) gene and endoglin gene are both overexpressed in placental samples obtained from pregnancies with intrauterine growth restriction compared to normal pregnancies. In the background of these changes a mechanism can be supposed, in which the increased endoglin activity in intrauterine growth restriction (IUGR) leads to impaired placental circulation through an antioangiogenetic effect. This results in the development of placental vascular dysfunction and chronic fetal hypoxia...
April 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28401605/prediction-of-delivering-a-small-for-gestational-age-infant-and-adverse-perinatal-outcome-in-women-with-suspected-pre-eclampsia
#17
Melanie Griffin, Paul T Seed, Suzy Duckworth, Robyn North, Jenny Myers, Lucy Mackillop, Nigel Simpson, Jason Waugh, Dilly Anumba, Louise C Kenny, Christopher W G Redman, Andrew H Shennan, Lucy C Chappell
OBJECTIVE: To evaluate the test performance of 47 biomarkers and ultrasound parameters to predict subsequent delivery of an SGA infant and adverse perinatal outcome in women presenting with suspected preeclampsia. METHODS: In a prospective, multicentre observational study, 47 biomarkers and ultrasound parameters were measured in 397 women presenting with suspected preterm preeclampsia, with the objective of evaluating them as predictors of subsequent delivery of an SGA infant and adverse perinatal outcome...
April 12, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28397162/sustained-placental-growth-factor-2-treatment-does-not-aggravate-advanced-atherosclerosis-in-ischemic-cardiomyopathy
#18
Ming Wu, Peter Pokreisz, Melissa Swinnen, Ellen Caluwe, Hilde Gillijns, Nina Vanden Driessche, Andrea Casazza, Erik Verbeken, Desire Collen, Stefan Janssens
Angiogenic growth factor therapy for ischemic cardiovascular disease carries a risk of stimulating atherosclerotic plaque growth. We evaluated risk benefit ratio of sustained administration of recombinant human placental growth factor (rhPlGF)-2 in mice with advanced atherosclerosis and chronic ischemic cardiomyopathy. We maintained apolipoprotein E-deficient mice on a high cholesterol diet and induced myocardial infarction by transient ligation at 4 weeks. At 8 weeks, we assessed left ventricular (LV) function and randomized mice to receive rhPlGF-2 or vehicle (VEH) subcutaneously for 28 days...
April 10, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28391576/phase-i-trial-and-pharmacokinetic-study-of-tanibirumab-a-fully-human-monoclonal-antibody-to-vascular-endothelial-growth-factor-receptor-2-in-patients-with-refractory-solid-tumors
#19
Su Jin Lee, Seon Young Lee, Weon Sup Lee, Jin San Yoo, Jong-Mu Sun, Jeeyun Lee, Se Hoon Park, Joon Oh Park, Myung-Ju Ahn, Ho Yeong Lim, Won Ki Kang, Young Suk Park
Background Tanibirumab is a fully human monoclonal antibody to vascular endothelial growth factor receptor 2 (VEGFR-2). We conducted a first-in-human phase I study of tanibirumab in patients with solid tumors refractory to standard chemotherapy. Primary endpoints were evaluating safety, pharmacokinetics (PKs), estimating maximum-tolerated dose (MTD) and recommended phase II dose (RP2D). Methods We designed our study to escalate tanibirumab at 9 different dose levels with a 3 + 3 method and tanibirumab (1-28 mg/kg) was administered intravenously on D1, 8, 15 in 28-day courses...
April 8, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28378526/placental-growth-factor-silencing-ameliorates-liver-fibrosis-and-angiogenesis-and-inhibits-activation-of-hepatic-stellate-cells-in-a-murine-model-of-chronic-liver-disease
#20
Xi Li, Qun-Yan Yao, Hong-Chun Liu, Qian-Wen Jin, Bei-Li Xu, Shun-Cai Zhang, Chuan-Tao Tu
Placental growth factor (PlGF) is a member of the vascular endothelial growth factor (VEGF) family and is involved in pathological angiogenesis associated with chronic liver diseases. However, the precise mechanisms underlying PlGF signalling contributing to liver fibrosis and angiogenesis remain largely unexplored. This study aimed to assess the effect of reducing PlGF expression using small interfering RNA (siRNA) on experimental liver fibrosis and angiogenesis, and to elucidate the underlying molecular mechanisms...
April 5, 2017: Journal of Cellular and Molecular Medicine
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