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fetal fibronectine

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https://www.readbyqxmd.com/read/27905298/haploinsufficiency-of-the-folliculin-gene-leads-to-impaired-functions-of-lung-fibroblasts-in-patients-with-birt-hogg-dub%C3%A3-syndrome
#1
Yoshito Hoshika, Fumiyuki Takahashi, Shinsaku Togo, Muneaki Hashimoto, Takeshi Nara, Toshiyuki Kobayashi, Fariz Nurwidya, Hideyuki Kataoka, Masatoshi Kurihara, Etsuko Kobayashi, Hiroki Ebana, Mika Kikkawa, Katsutoshi Ando, Koichi Nishino, Okio Hino, Kazuhisa Takahashi, Kuniaki Seyama
Birt-Hogg-Dubé syndrome (BHDS) is an autosomal dominant inherited disorder caused by germline mutations in the FLCN gene, and characterized by skin fibrofolliculomas, multiple lung cysts, spontaneous pneumothorax, and renal neoplasms. Pulmonary manifestations frequently develop earlier than other organ involvements, prompting a diagnosis of BHDS However, the mechanism of lung cyst formation and pathogenesis of pneumothorax have not yet been clarified. Fibroblasts were isolated from lung tissues obtained from patients with BHDS (n = 12) and lung cancer (n = 10) as controls...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27836377/-prevention-of-spontaneous-preterm-birth-excluding-preterm-premature-rupture-of-membranes-guidelines-for-clinical-practice%C3%A2-%C3%A2-text-of-the-guidelines-short-text
#2
L Sentilhes, M-V Sénat, P-Y Ancel, E Azria, G Benoist, J Blanc, G Brabant, F Bretelle, S Brun, M Doret, C Ducroux-Schouwey, A Evrard, G Kayem, E Maisonneuve, L Marcellin, S Marret, N Mottet, S Paysant, D Riethmuller, P Rozenberg, T Schmitz, H Torchin, B Langer
OBJECTIVES: To determine the measures to prevent spontaneous preterm birth (excluding preterm premature rupture of membranes)and its consequences. MATERIALS AND METHODS: The PubMed database, the Cochrane Library and the recommendations from the French and foreign obstetrical societies or colleges have been consulted. RESULTS: In France, premature birth concerns 60,000 neonates every year (7.4 %), half of them are delivered after spontaneous onset of labor...
November 8, 2016: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
https://www.readbyqxmd.com/read/27777928/cervicovaginal-fluid-acetate-a-metabolite-marker-of-preterm-birth-in-symptomatic-pregnant-women
#3
Emmanuel Amabebe, Steven Reynolds, Victoria Stern, Graham Stafford, Martyn Paley, Dilly O C Anumba
Changes in vaginal microbiota that is associated with preterm birth (PTB) leave specific metabolite fingerprints that can be detected in the cervicovaginal fluid (CVF) using metabolomics techniques. In this study, we characterize and validate the CVF metabolite profile of pregnant women presenting with symptoms of threatened preterm labor (PTL) by both (1)H-nuclear magnetic resonance spectroscopy (NMR) and enzyme-based spectrophotometry. We also determine their predictive capacity for PTB, singly, and in combination, with current clinical screening tools - cervicovaginal fetal fibronectin (FFN) and ultrasound cervical length (CL)...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27750180/comparison-of-the-actim-partus-test-and-the-fetal-fibronectin-test-in-the-prediction-of-spontaneous-preterm-birth-in-symptomatic-women-undergoing-cervical-length-measurement
#4
Merel M C Bruijn, Jolande Y Vis, Femke F Wilms, Martijn A Oudijk, Anneke Kwee, Martina M Porath, Guid Oei, Hubertina C J Scheepers, Marc E A Spaanderman, Kitty W M Bloemenkamp, Monique C Haak, Antoinette C Bolte, Frank P H A Vandenbussche, Mallory D Woiski, Caroline J Bax, Jérôme M J Cornette, Johannes J Duvekot, Bas W A Nij Bijvank, Jim van Eyck, Maureen T M Franssen, Krystyna M Sollie, Joris A M van der Post, Patrick M M Bossuyt, Brent C Opmeer, M Kok, Ben W J Mol, Gert-Jan van Baaren
OBJECTIVE: To compare the accuracy of the Actim Partus test and fetal fibronectin (fFN) test in the prediction of spontaneous preterm delivery within seven days in symptomatic women undergoing cervical length measurement. STUDY DESIGN: We performed a post-hoc analysis on frozen samples of a nationwide cohort study in all 10 perinatal centres in the Netherlands. We selected samples from women with signs of preterm labour between 24 and 34 weeks of gestational age and a cervical length below 30mm...
November 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27739072/il-7-and-immobilized-kit-ligand-stimulate-serum-and-stromal-cell-free-cultures-of-precursor-b-cell-lines-and-clones
#5
Yohei Kawano, Georg Petkau, Ingrid Wolf, Julia Tornack, Fritz Melchers
Long-term proliferating, DH JH -rearranged mouse precursor B-cell lines have previously been established in serum- and IL-7-containing media from fetal liver, but not from bone marrow. Serum and stromal cells expose these pre-B cells to undefined factors, hampering accurate analyses of ligand-dependent signalling, which controls pre-B cell proliferation, survival, residence and migration. Here, we describe a novel serum-free, stromal cell-free culture system, which allows to establish and maintain pre-B cells not only from fetal liver, but also from bone marrow with practically identical efficiencies in proliferation, cloning and differentiation...
October 14, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27730762/optimizing-a-multifunctional-microsphere-scaffold-to-improve-neural-precursor-cell-transplantation-for-traumatic-brain-injury-repair
#6
Nolan B Skop, Frances Calderon, Cheul H Cho, Chirag D Gandhi, Steven W Levison
Tissue engineering using stem cells is widely used to repair damaged tissues in diverse biological systems; however, this approach has met with less success in regenerating the central nervous system (CNS). In this study we optimized and characterized the surface chemistry of chitosan-based scaffolds for CNS repair. To maintain radial glial cell (RGC) character of primitive neural precursors, fibronectin was adsorbed to chitosan. The chitosan was further modified by covalently linking heparin using genipin, which then served as a linker to immobilize fibroblast growth factor-2 (FGF-2), creating a multifunctional film...
October 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27686036/fetal-fibronectin-testing-in-threatened-preterm-labor-time-to-stop
#7
EDITORIAL
George A Macones
No abstract text is available yet for this article.
October 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27591351/post-policy-implementation-review-of-rapid-fetal-fibronectin-ffn-testing-for-preterm-labour-in-alberta
#8
Anderson W Chuck, Nguyen X Thanh, Radha S Chari, Robert Douglas Wilson, Selikke Janes-Kelley, James C Wesenberg
OBJECTIVES: In 2006, the Alberta Ministry of Health issued a policy to implement fetal fibronectin (fFN) testing as a publicly funded service for pregnant women. The goals were to reduce maternity health care utilization and unnecessary treatment, which would result in cost-savings for the health system by more accurately diagnosing false preterm labour. We conducted a post-policy implementation review to determine whether the policy implementation achieved its goals. METHODS: We assessed the impacts of fFN testing on clinical decision-making for ambulance transfer, hospital admission, and length of hospital stay by comparing these variables between the tested and untested patients...
July 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/27545716/preventing-newborn-deaths-due-to-prematurity
#9
Kishwar Azad, Jiji Mathews
Preterm births (PTBs), defined as births before 37 weeks of gestation account for the majority of deaths in the newborn period. Prediction and prevention of PTB is challenging. A history of preterm labour or second trimester losses and accurate measurement of cervical length help to identify women who would benefit from progesterone and cerclage. Fibronectin estimation in the cervicovaginal secretions of a symptomatic woman with an undilated cervix can predict PTB within 10 days of testing. Antibiotics should be given to women with preterm prelabour rupture of membranes but tocolysis has a limited role in the management of preterm labour...
June 24, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27542720/the-predictive-value-of-quantitative-fibronectin-testing-in%C3%A2-combination-with-cervical-length-measurement-in%C3%A2-symptomatic-women
#10
Merel M C Bruijn, Esme I Kamphuis, Irene M Hoesli, Begoña Martinez de Tejada, Anne R Loccufier, Maritta Kühnert, Hanns Helmer, Marie Franz, Martina M Porath, Martijn A Oudijk, Yves Jacquemyn, Sven M Schulzke, Grit Vetter, Griet Hoste, Jolande Y Vis, Marjolein Kok, Ben W J Mol, Gert-Jan van Baaren
BACKGROUND: The combination of the qualitative fetal fibronectin test and cervical length measurement has a high negative predictive value for preterm birth within 7 days; however, positive prediction is poor. A new bedside quantitative fetal fibronectin test showed potential additional value over the conventional qualitative test, but there is limited evidence on the combination with cervical length measurement. OBJECTIVE: The purpose of this study was to compare quantitative fetal fibronectin and qualitative fetal fibronectin testing in the prediction of spontaneous preterm birth within 7 days in symptomatic women who undergo cervical length measurement...
December 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27498178/combinatorial-extracellular-matrix-microenvironments-promote-survival-and-phenotype-of-human-induced-pluripotent-stem-cell-derived-endothelial-cells-in-hypoxia
#11
Luqia Hou, John Coller, Vanita Natu, Trevor J Hastie, Ngan F Huang
UNLABELLED: Recent developments in cell therapy using human induced pluripotent stem cell-derived endothelial cells (iPSC-ECs) hold great promise for treating ischemic cardiovascular tissues. However, poor post-transplantation viability largely limits the potential of stem cell therapy. Although the extracellular matrix (ECM) has become increasingly recognized as an important cell survival factor, conventional approaches primarily rely on single ECMs for in vivo co-delivery with cells, even though the endothelial basement membrane is comprised of a milieu of different ECMs...
October 15, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27457091/hydroxysafflor-yellow-a-inhibits-tgf-%C3%AE-1-induced-activation-of-human-fetal-lung-fibroblasts-in-vitro
#12
Ruiyan Pan, Yadan Zhang, Baoxia Zang, Li Tan, Ming Jin
OBJECTIVE: Hydroxysafflor yellow A (HSYA) is one of the chemical component isolated from Chinese medicine Carthamus tinctorius L. Our preliminary study confirmed that HSYA attenuated bleomycin-induced pulmonary fibrosis in mice. In this study, we evaluated the effect of HSYA on TGF-β1-induced activation of human fetal lung fibroblasts (MRC-5) and explored the underlying mechanisms of its activity. METHOD: MRC-5 cells activated by TGF-β1 were incubated with HSYA and/or the TGF-β type I receptor inhibitor, SB431542...
October 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27441567/which-factors-contribute-to-false-positive-false-negative-and-invalid-results-in-fetal-fibronectin-testing-in-women-with-symptoms-of-preterm-labor
#13
Merel M C Bruijn, Frederik J R Hermans, Jolande Y Vis, Femke F Wilms, Martijn A Oudijk, Anneke Kwee, Martina M Porath, Guid Oei, Hubertina C J Scheepers, Marc E A Spaanderman, Kitty W M Bloemenkamp, Monique C Haak, Antoinette C Bolte, Frank P H A Vandenbussche, Mallory D Woiski, Caroline J Bax, Jérôme M J Cornette, Johannes J Duvekot, Bas W A N I J Bijvank, Jim van Eyck, Maureen T M Franssen, Krystyna M Sollie, Joris A M van der Post, Patrick M M Bossuyt, Marjolein Kok, Ben W J Mol, Gert-Jan van Baaren
Objective We assessed the influence of external factors on false-positive, false-negative, and invalid fibronectin results in the prediction of spontaneous delivery within 7 days. Methods We studied symptomatic women between 24 and 34 weeks' gestational age. We performed uni- and multivariable logistic regression to estimate the effect of external factors (vaginal soap, digital examination, transvaginal sonography, sexual intercourse, vaginal bleeding) on the risk of false-positive, false-negative, and invalid results, using spontaneous delivery within 7 days as the outcome...
July 21, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27441291/screening-for-post-32-week-preterm-birth-risk-how-helpful-is-routine-perinatal-data-collection
#14
Wei Luo, Emily Y-S Huning, Truyen Tran, Dinh Phung, Svetha Venkatesh
BACKGROUND: Preterm birth is a clinical event significant but difficult to predict. Biomarkers such as fetal fibronectin and cervical length are effective, but the often are used only for women with clinically suspected preterm risk. It is unknown whether routinely collected data can be used in early pregnancy to stratify preterm birth risk by identifying asymptomatic women. This paper tries to determine the value of the Victorian Perinatal Data Collection (VPDC) dataset in predicting preterm birth and screening for invasive tests...
June 2016: Heliyon
https://www.readbyqxmd.com/read/27434692/the-independent-association-of-a-short-cervix-positive-fetal-fibronectin-amniotic-fluid-sludge-and-cervical-funneling-with-spontaneous-preterm-birth-in-twin-pregnancies
#15
Jessica Spiegelman, Whitney Booker, Simi Gupta, Jennifer Lam-Rochlin, Andrei Rebarber, Daniel H Saltzman, Ana Monteagudo, Nathan S Fox
Objective To estimate the independent association of a short cervical length (CL), positive fetal fibronectin (fFN), amniotic fluid (AF) sludge, and cervical funneling with spontaneous preterm birth in twin pregnancies. Methods Retrospective cohort study of twin pregnancies managed by a single maternal-fetal medicine practice from June 2005 to February 2014. All patients underwent transvaginal sonographic CL and fFN testing. We reviewed all images from the first CL at 22(0/7) to 25(6/7) weeks for the presence of (1) a short CL, which is defined as ≤25 mm, (2) AF sludge, and (3) cervical funneling, and also recorded (4) the fFN result from that time...
October 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27405353/effectiveness-of-a-cervical-pessary-for-women-who-did-not-deliver-48%C3%A2-h-after-threatened-preterm-labor-assessment-of-perinatal-outcome-after-specific-treatment-in-early-labor-apostel-vi-trial
#16
Frederik J R Hermans, Ewoud Schuit, Brent C Opmeer, Martijn A Oudijk, Mireille Bekker, Mallory Woiski, Caroline J Bax, Marieke Sueters, Hubertina C J Scheepers, Maureen T M Franssen, Eva Pajkrt, Ben Willem J Mol, Marjolein Kok
BACKGROUND: Preterm birth is a major cause of neonatal mortality and morbidity. As preventive strategies are largely ineffective, threatened preterm labor is a frequent problem that affects approximately 10 % of pregnancies. In recent years, risk assessment in these women has incorporated cervical length measurement and fetal fibronectin testing, and this has improved the capacity to identify women at increased risk for delivery within 14 days. Despite these improvements, risk for preterm birth continues to be increased in women who did not deliver after an episode of threatened preterm labor, as indicated by a preterm birth rate between 30 to 60 % in this group of women...
2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27388033/comparison-of-rapid-bedside-tests-for-phosphorylated-insulin-like-growth-factor-binding-protein-1-and-fetal-fibronectin-to-predict-preterm-birth
#17
Reva Tripathi, Shakun Tyagi, Yedla M Mala, Nilanchali Singh, Nalini B Pandey, Preeti Yadav
OBJECTIVE: To compare the accuracy of rapid bedside tests for phosphorylated insulin-like growth factor-binding protein 1 (phIGFBP-1) and fetal fibronectin (fFN) to predict preterm delivery among women with threatened preterm labor. METHODS: A prospective observational study was conducted among women with a singleton pregnancy of 28-36 weeks, intact membranes, and symptoms suggestive of preterm labor who attended a center in New Delhi, India, between April 1, 2011, and March 31, 2014...
October 2016: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/27282765/platelets-are-versatile-cells-new-discoveries-in-hemostasis-thrombosis-immune-responses-tumor-metastasis-and-beyond
#18
Xiaohong Ruby Xu, Dan Zhang, Brigitta Elaine Oswald, Naadiya Carrim, Xiaozhong Wang, Yan Hou, Qing Zhang, Christopher Lavalle, Thomas McKeown, Alexandra H Marshall, Heyu Ni
Platelets are small anucleate blood cells generated from megakaryocytes in the bone marrow and cleared in the reticuloendothelial system. At the site of vascular injury, platelet adhesion, activation and aggregation constitute the first wave of hemostasis. Blood coagulation, which is initiated by the intrinsic or extrinsic coagulation cascades, is the second wave of hemostasis. Activated platelets can also provide negatively-charged surfaces that harbor coagulation factors and markedly potentiate cell-based thrombin generation...
December 2016: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/27280542/quantitative-fetal-fibronectin-predicts-preterm-birth-in-women-with-bulging-fetal-membranes
#19
Francesco Fiorini, Alexander Isted, Natasha L Hezelgrave, Andrew H Shennan
OBJECTIVE: To assess the predictive value of quantitative fetal fibronectin (fFN) concentration in cervicovaginal fluid for spontaneous preterm birth in women with bulging fetal membranes. STUDY DESIGN: This was a prospective observational study from five UK tertiary centres of a cohort of women with singleton pregnancy and bulging fetal membranes presenting between 18 and 32 weeks of gestation (n=62), in the period 2010-2014. fFN concentrations in cervicovaginal fluid were measured both quantitatively and qualitatively at presentation in all women...
August 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27267388/quantitative-fetal-fibronectin-and-cervical-length-to%C3%A2-predict%C3%A2-preterm-birth-in-asymptomatic-women-with%C3%A2-previous-cervical-surgery
#20
Brooke I Vandermolen, Natasha L Hezelgrave, Elizabeth M Smout, Danielle S Abbott, Paul T Seed, Andrew H Shennan
BACKGROUND: Quantitative fetal fibronectin testing has demonstrated accuracy for prediction of spontaneous preterm birth in asymptomatic women with a history of preterm birth. Predictive accuracy in women with previous cervical surgery (a potentially different risk mechanism) is not known. OBJECTIVE: We sought to compare the predictive accuracy of cervicovaginal fluid quantitative fetal fibronectin and cervical length testing in asymptomatic women with previous cervical surgery to that in women with 1 previous preterm birth...
October 2016: American Journal of Obstetrics and Gynecology
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