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https://www.readbyqxmd.com/read/28817576/gestational-diabetes-mellitus-is-associated-with-increased-pro-migratory-activation-of-vascular-endothelial-growth-factor-receptor-2-and-reduced-expression-of-vascular-endothelial-growth-factor-receptor-1
#1
Felipe Troncoso, Jesenia Acurio, Kurt Herlitz, Claudio Aguayo, Patricio Bertoglia, Enrique Guzman-Gutierrez, Marco Loyola, Marcelo Gonzalez, Meriem Rezgaoui, Gernot Desoye, Carlos Escudero
Placentas from gestational diabetes mellitus (GDM) are often hypervascularized; however, participation of vascular endothelial growth factor (VEGF) and its receptors in this placental adaptation is unclear. We aimed to test whether changes in phosphorylation of tyrosine 951 or tyrosine 1175 (pY951 or pY1175) of the vascular endothelial growth factor receptor 2 (KDR) are associated with the proangiogenic state observed in placentas from GDM. We obtained placental samples from women with normal pregnancies (n = 24) or GDM (n = 18)...
2017: PloS One
https://www.readbyqxmd.com/read/28807201/overexpression-of-thioredoxin1-enhances-functional-recovery-in-a-mouse-model-of-hind-limb-ischemia
#2
Inam A Shaikh, Muhammad Tipu Rishi, Mark Youssef, Vaithinathan Selvaraju, Mahesh Thirunavukkarasu, Gopi Ukani, Rajesh Lakshmanan, J Alexander Palesty, Nilanjana Maulik
BACKGROUND: There is keen interest in finding nonsurgical treatments for peripheral vascular disease (PVD). Previously, we demonstrated that selective activation of Thioredoxin1 (Trx1), a 12-kDa cytosolic protein, initiates redox-dependent signaling and promotes neovascularization after ischemic heart disease. Therefore, Trx1 might possess immense potential to not only treat murine hind limb ischemia (HLI) through effective angiogenesis but also provide PVD patients with nonsurgical therapy to enhance neovascularization and improve blood perfusion...
August 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28799432/targeted-therapies-in-acute-myeloid-leukemia-a-focus-on-flt-3-inhibitors-and-abt199
#3
Kiran Naqvi, Marina Konopleva, Farhad Ravandi
Acute myeloid leukemia (AML) remains a therapeutic challenge. Despite ongoing research, the standard therapy for AML has not changed significantly in the past four decades. With the identification of cytogenetic and molecular abnormalities, several promising therapeutic agents are currently being investigated. FLT3 mutation is a well-recognized target seen in 30% of the cytogenetically normal AML. More recently, the BCL2 family of anti-apoptotic proteins have also generated great interest as a therapeutic target...
August 11, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28799176/the-molecular-mechanism-behind-resistance-of-the-kinase-flt3-to-the-inhibitor-quizartinib
#4
Ran Friedman
Fms-like tyrosine kinase 3 (FLT3) is a receptor tyrosine kinase that is a drug target for leukaemias. Several potent inhibitors of FLT3 exists, and bind to the inactive form of the enzyme. Unfortunately, resistance due to mutations in the kinase domain of FLT3 limits the therapeutic effects of these inhibitors. As in many other cases, it is not straightforward to explain why certain mutations lead to drug resistance. Extensive fully-atomistic molecular dynamics (MD) simulations of FLT3 were carried out with an inhibited form (FLT-quizartinib complex), a free (apo) form and an active conformation...
August 11, 2017: Proteins
https://www.readbyqxmd.com/read/28795252/ipet-study-an-flt-pet-window-study-to-assess-the-activity-of-the-steroid-sulfatase-inhibitor-irosustat-in-early-breast-cancer
#5
Carlo Palmieri, Richard Szydlo, Marie Miller, Laura Barker, Neva H Patel, Hironobu Sasano, Tara Barwick, Henry Tam, Dimitri Hadjiminas, Jasmin Lee, Abeer Shaaban, Hanna Nicholas, R Charles Coombes, Laura M Kenny
BACKGROUND: Steroid sulfatase (STS) is involved in oestrogen biosynthesis and irosustat is a first generation, irreversible steroid sulfatase inhibitor. A pre-surgical window-of-opportunity study with irosustat was undertaken in estrogen receptor-positive (ER+) breast cancer to assess the effect of irosustat on tumour cell proliferation as measured by 3'-deoxy-3'-[18F] fluorothymidine uptake measured by PET scanning (FLT-PET) and Ki67. METHODS: Postmenopausal women with untreated ER+ early breast cancer were recruited, and imaged with FLT-PET at baseline and after at least 2 weeks treatment with irosustat, 40 mg once daily orally...
August 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28790977/micro-and-nano-vesicles-from-first-trimester-human-placentae-carry-flt-1-and-levels-are-increased-in-severe-preeclampsia
#6
Mancy Tong, Qi Chen, Joanna L James, Peter R Stone, Lawrence W Chamley
BACKGROUND/OBJECTIVES: Preeclampsia is a life-threatening hypertensive disease affecting 3-5% of pregnancies. While the pathogenesis of preeclampsia remains unclear, it is known that placenta-derived factors trigger the disease by activating maternal endothelial cells prior to the onset of clinical symptoms. Extracellular vesicles (EVs) of different sizes extruded by the placenta may be one factor. The truncated/secreted form of Flt-1 (sFlt-1) has also been implicated in the pathogenesis of preeclampsia...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28774461/phase-ii-trial-of-bevacizumab-with-dose-dense-paclitaxel-as-first-line-treatment-in-patients-with-advanced-ovarian-cancer
#7
Nicole D Fleming, Robert L Coleman, Celestine Tung, Shannon N Westin, Wei Hu, Yunjie Sun, Priya Bhosale, Mark F Munsell, Anil K Sood
OBJECTIVES: To assess the tolerability and efficacy of bevacizumab with carboplatin and weekly paclitaxel as first-line adjuvant therapy for advanced stage ovarian cancer. METHODS: After IRB approval, this single-institution, phase II study enrolled patients with stage III or IV epithelial ovarian cancer after primary cytoreductive surgery to treatment with carboplatin (AUC 5), weekly paclitaxel (80mg/m2), and bevacizumab (15mg/kg) every 3weeks for at least 6cycles...
July 31, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28770274/a-pilot-study-for-texture-analysis-of-18-f-fdg-and-18-f-flt-pet-ct-to-predict-tumor-recurrence-of-patients-with-colorectal-cancer-who-received-surgery
#8
Masatoyo Nakajo, Yoriko Kajiya, Atsushi Tani, Megumi Jinguji, Masayuki Nakajo, Masaki Kitazono, Takashi Yoshiura
PURPOSE: This retrospective study was done to examine whether the heterogeneity in primary tumor F-18-fluorodeoxyglucose ((18)F-FDG) and (18)F-3'-fluoro-3'-deoxythymidine ((18)F-FLT) distribution can predict prognosis of patients with colorectal cancer who received surgery. METHODS: The enrolled 32 patients with colorectal cancer underwent both (18)F-FDG- and (18)F-FLT-PET/CT studies before surgery. Clinicopathological factors, stage, SUVmax, SUVmean, metabolic tumor volume (SUV ≥ 2...
August 3, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28767400/flt-1-positive-cells-are-cancer-stem-like-cells-in-colorectal-carcinoma
#9
Ye Huang, Yinpeng Huang, Di Liu, Tianyi Wang, Guang Bai
Recent evidence demonstrates an essential role of cancer stem cells (CSCs) in cancer initiation, progression, migration, metastasis as well as chemo-resistance. Nevertheless, identification of CSCs in different cancers has not been succeeded, since such CSCs are typically lack of a specific and unique marker. Therefore, the current strategy is basically using one or several markers to enrich CSCs, or to isolate CSC-like cells. Here, we showed that in clinically obtained colorectal carcinoma (CRC) specimens, Flt-1, the type 1 receptor for vascular endothelial growth factor A, was significantly upregulated...
July 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28702806/efficacy-and-safety-of-nintedanib-plus-docetaxel-in-patients-with-advanced-lung-adenocarcinoma-complementary-and-exploratory-analyses-of-the-phase-iii-lume-lung-1-study
#10
Maya Gottfried, Jaafar Bennouna, Igor Bondarenko, Jean-Yves Douillard, David F Heigener, Maciej Krzakowski, Anders Mellemgaard, Silvia Novello, Sergei Orlov, Yvonne Summers, Joachim von Pawel, Julia Stöhr, Rolf Kaiser, Martin Reck
BACKGROUND: Nintedanib is a triple angiokinase inhibitor approved with docetaxel for adenocarcinoma non-small cell lung cancer after first-line chemotherapy (FLT). In the phase III LUME-Lung 1 study, overall survival (OS) was significantly longer with nintedanib/docetaxel than with placebo/docetaxel in all adenocarcinoma patients and those with time from start of FLT (TSFLT) <9 months. OBJECTIVE: This study sought to extend analyses from the LUME-Lung 1 study, specifically for adenocarcinoma patients, to explore the impact of clinically relevant characteristics on outcomes such as time to progression after FLT...
August 2017: Targeted Oncology
https://www.readbyqxmd.com/read/28700140/development-of-a-molecular-bio-switch-using-fluorescence-lifetime-imaging-incremental-activation-of-fluorescein-diacetate
#11
Eran A Barnoy, Rachela Popovtzer, Dror Fixler
Molecular bio-switches offer an invaluable asset in the shift from systemic to targeted treatments. Within the growing arsenal of switches are imaging probes that functionalize only in given locations or situations. Acetate esters are a common fluorescent example, known to activate upon interaction with esterases. Fluorescein diacetate (FDA) is one such fluorophore used in cell viability assays. These assays rely on the fact that the compound begins colorless and with no fluorescent signature whatsoever, and only after internalization into cells it is possible to detect a fluorescence signal...
July 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28695424/flt-pet-for-early-response-evaluation-of-colorectal-cancer-patients-with-liver-metastases-a-prospective-study
#12
Marie Benzon Mogensen, Annika Loft, Marianne Aznar, Thomas Axelsen, Ben Vainer, Kell Osterlind, Andreas Kjaer
BACKGROUND: Fluoro-L-thymidine (FLT) is a positron emission tomography/computed tomography (PET/CT) tracer which reflects proliferative activity in a cancer lesion. The main objective of this prospective explorative study was to evaluate whether FLT-PET can be used for the early evaluation of treatment response in colorectal cancer patients (CRC) with liver metastases. Patients with metastatic CRC having at least one measurable (>1 cm) liver metastasis receiving first-line chemotherapy were included...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28687961/allogeneic-adipose-derived-mesenchymal-stem-cell-transplantation-enhances-the-expression-of-angiogenic-factors-in-a-mouse-acute-hindlimb-ischemic-model
#13
Ngoc Bich Vu, Ha Thi-Ngan Le, Thuy Thi-Thanh Dao, Lan Thi Phi, Ngoc Kim Phan, Van Thanh Ta
Cell migration and molecular mechanisms during healing of damaged vascular or muscle tissues are emerging fields of interest worldwide. The study herein focuses on evaluating the role of allogenic adipose-derived mesenchymal stem cells (ADMSCs) in restoring damaged tissues. Using a hindlimb ischemic mouse model, ADMSC-mediated induction of cell migration and gene expression related to myocyte regeneration and angiogenesis were evaluated. ADMSCs were labeled with GFP (ADMSC-GFP). The proximal end of the femoral blood vessel of mice (over 6 months of age) are ligated at two positions then cut between the two ties...
July 8, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28683299/effectiveness-and-feasibility-of-nailfold-microcirculation-test-to-screen-for-diabetic-peripheral-neuropathy
#14
Guotao Hu, Fanglong Zhai, Feifei Mo, Li He, Weiya Shen, Hailan Wang
AIMS: The nailfold microcirculation index (MI) is a non-invasive, objective, and highly sensitive blood capillary detection method. This study evaluated the diagnostic efficiency of the nailfold MI relative to the more subjective vibration perception threshold (VPT) examination for early diagnostic screening of diabetic peripheral neuropathy (DPN). METHODS: From February 2015 to February 2016, 227 diabetes mellitus patients and 39 healthy individuals were enrolled...
June 13, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28660853/fluorescence-lifetime-based-bioassays
#15
Franz-Josef Meyer-Almes
Fluorescence lifetime (FLT) is a robust intrinsic property and material constant of fluorescent matter. Measuring this important physical indicator has evolved from a laboratory curiosity to a powerful and established technique for a variety of applications in drug discovery, medical diagnostics and basic biological research. This distinct trend was mainly driven by improved and meanwhile affordable laser and detection instrumentation on the one hand and the development of suitable FLT probes and biological assays on the other...
June 29, 2017: Methods and Applications in Fluorescence
https://www.readbyqxmd.com/read/28654205/driving-toward-precision-medicine-for-acute-leukemias-are-we-there-yet
#16
Clement Chung, Hilary Ma
Despite recent progress in the understanding of the molecular basis of acute leukemias, treatment options for these diseases have not shown significant changes over the last few decades. In this review, we present a nonexhaustive key summary of the current cytogenetic and molecular changes associated with acute leukemias in disease prognostication and potential targeted therapies. An emerging paradigm is that many genetic or molecular alterations target similar signal transduction, transcriptional, and epigenetic pathways...
June 27, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28641227/presence-distribution-and-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-rice-wheat-continuous-cropping-soils-close-to-five-industrial-parks-of-suzhou-china
#17
Yong Li, Ling Long, Jing Ge, Li-Xuan Yang, Jin-Jin Cheng, Ling-Xiang Sun, Changying Lu, Xiang-Yang Yu
Polycyclic aromatic hydrocarbons (PAHs) accumulated in agricultural soils are likely to threaten human health and ecosystem though the food chain, therefore, it is worth to pay more attention to soil contamination by PAHs. In this study, the presence, distribution and risk assessment of 16 priority PAHs in rice-wheat continuous cropping soils close to industrial parks of Suzhou were firstly investigated. The concentrations of the total PAHs ranged from 125.99 ng/g to 796.65 ng/g with an average of 352.94 ng/g...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28626137/novel-palm-fatty-acid-functionalized-magnetite-nanoparticles-for-magnetic-solid-phase-extraction-of-trace-polycyclic-aromatic-hydrocarbons-from-environmental-samples
#18
Siti Khalijah Mahmad Rozi, Hamid Rashidi Nodeh, Muhammad Afzal Kamboh, Ninie Suhana Abdul Manan, Sharifah Mohamad
A novel adsorbent, palm fatty acid coated magnetic Fe3O4 nanoparticles (MNP-FA) was successfully synthesized with immobilization of the palm fatty acid onto the surface of MNPs. The successful synthesis of MNP-FA was further confirmed by X-Ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and Energy dispersive X-Ray spectroscopy (EDX) analyses and water contact angle (WCA) measurement. This newly synthesized MNP-FA was applied as magnetic solid phase extraction (MSPE) adsorbent for the enrichment of polycyclic aromatic hydrocarbons (PAHs), namely fluoranthene (FLT), pyrene (Pyr), chrysene (Cry) and benzo(a)pyrene (BaP) from environmental samples prior to High Performance Liquid Chromatography- Diode Array Detector (HPLC-DAD) analysis...
June 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28623325/fluorescence-lifetime-imaging-microscopy-a-novel-diagnostic-tool-for-metastatic-cell-detection-in-the-cerebrospinal-fluid-of-children-with-medulloblastoma
#19
Sivan Gershanov, Shalom Michowiz, Helen Toledano, Gilad Yahav, Orit Barinfeld, Avraham Hirshberg, Haim Ben-Zvi, Gabriel Mircus, Mali Salmon-Divon, Dror Fixler, Nitza Goldenberg-Cohen
In pediatric brain tumours, dissemination of malignant cells within the central nervous system confers poor prognosis and determines treatment intensity, but is often undetectable by imaging or cytology. This study describes the use of fluorescence lifetime (FLT) imaging microscopy (FLIM), a novel diagnostic tool, for detection of metastatic spread. The study group included 15 children with medulloblastoma and 2 with atypical teratoid/rhabdoid tumour. Cells extracted from the tumour and the cerebrospinal fluid (CSF) 2 weeks postoperatively and repeatedly during chemo/radiotherapy were subjected to nuclear staining followed by FLT measurement and cytological study...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619020/medical-students-can-teach-communication-skills-a-mixed-methods-study-of-cross-year-peer-tutoring
#20
Osamu Nomura, Hirotaka Onishi, Hiroyuki Kato
BACKGROUND: Cross-year peer tutoring (CYPT) of medical students is recognized as an effective learning tool. The aim of this study is to investigate the non-inferiority of the objective outcome of medical interview training with CYPT compared with the results of faculty-led training (FLT), and to explore qualitatively the educational benefits of CYPT. METHODS: We conducted a convergent mixed methods study including a randomized controlled non-inferiority trial and two focus groups...
June 15, 2017: BMC Medical Education
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