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https://www.readbyqxmd.com/read/28526811/proteomic-analysis-of-cerebrospinal-fluid-from-children-with-central-nervous-system-tumors-identifies-candidate-proteins-relating-to-tumor-metastatic-spread
#1
Filippo Spreafico, Italia Bongarzone, Sara Pizzamiglio, Ruben Magni, Elena Taverna, Maida De Bortoli, Chiara M Ciniselli, Elena Barzanò, Veronica Biassoni, Alessandra Luchini, Lance A Liotta, Weidong Zhou, Michele Signore, Paolo Verderio, Maura Massimino
Central nervous system (CNS) tumors are the most common solid tumors in childhood. Since the sensitivity of combined cerebrospinal fluid (CSF) cytology and radiological neuroimaging in detecting meningeal metastases remains relatively low, we sought to characterize the CSF proteome of patients with CSF tumors to identify biomarkers predictive of metastatic spread. CSF samples from 27 children with brain tumors and 13 controls (extra-CNS non-Hodgkin lymphoma) were processed using core-shell hydrogel nanoparticles, and analyzed with reverse-phase liquid chromatography/electrospray tandem mass spectrometry (LC-MS/MS)...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28526784/trpv4-mediates-the-calcium-influx-required-for-flightless-non-muscle-myosin-interaction-and-collagen-remodeling
#2
P D Arora, M Di Gregorio, P He, C A McCulloch
Collagen remodeling by phagocytosis requires cell extension formation, which in turn involves interaction of the actin binding protein Flightless I (FliI) with non-muscle myosin IIA (NMMIIA) at cell-matrix adhesion sites. As Ca(2+) plays a central role in controlling actomyosin-dependent functions, we examined how Ca(2+) controls the generation of cell extensions and collagen remodeling. Ratio fluorimetry demonstrated localized Ca(2+) influx at extensions of fibroblasts. Western Blotting and qPCR showed high expression levels of the Ca(2+)-permeable, Transient Receptor Potential Vanilloid-4 (TRPV4) channel, which co-immunoprecipitated with β1 integrin and localized to adhesions...
May 19, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28526296/mesenchymal-stem-cells-mscs-attenuate-cutaneous-sclerodermatous-graft-versus-host-disease-scl-gvhd-through-inhibition-of-immune-cell-infiltration-in-a-mouse-model
#3
Ji-Young Lim, Da-Bin Ryu, Sung-Eun Lee, Gyeongsin Park, Chang-Ki Min
Human chronic graft-versus-host disease (CGVHD) shares clinical characteristics with a murine sclerodermatous GVHD (Scl-GVHD) model that is characterized by skin thickening and lung fibrosis. A B10.D2 → BALB/c transplant model of Scl-GVHD was used to address the therapeutic effect of mesenchymal stem cells (MSCs) on the development of CGVHD. The clinical and pathological severity of cutaneous Scl-GVHD was significantly attenuated in MSC-treated recipients relative to Scl-GVHD controls. After MSC treatment, skin collagen production was significantly reduced with consistent downregulation of TGF-β expression...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28523478/anti-gpvi-fab-sar264565-effectively-blocks-gpvi-function-in-ex-vivo-human-platelets-under-arterial-shear-in-a-perfusion-chamber
#4
Peter Florian, Peter Wonerow, Sebastian Harder, Karina Kuczka, Michel Dubar, Jochen Graff
INTRODUCTION: Glycoprotein VI (GPVI) is the major platelet receptor for collagen-mediated platelet adhesion and activation. SAR264565 is an anti-GPVI-Fab, binds to GPVI with high affinity, and blocks GPVI function in human platelets in vitro. METHODS: The effect of SAR26456 on platelet responsiveness in the blood of 21 healthy male subjects was investigated using Sakariassen's ex vivo thrombogenesis perfusion chamber model on a collagen-coated surface under conditions mimicking arterial flow...
May 18, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28522569/brain-derived-neurotrophic-factor-and-airway-fibrosis-in-asthma
#5
Michelle R Freeman, Venkatachalem Sathish, Logan J Manlove, Shengyu Wang, Rodney D Britt, Michael A Thompson, Christina M Pabelick, Y S Prakash
Airway remodeling in asthma driven by inflammation involves proliferation of epithelial cells and airway smooth muscle (ASM), as well as enhanced extracellular matrix (ECM) generation and deposition, i.e. fibrosis. Accordingly, understanding pro-fibrotic mechanisms is important for developing novel therapeutic strategies in asthma. Recent studies, including our own, have suggested a role for locally-produced growth factors such as brain-derived neurotrophic factor (BDNF) in mediating and modulating inflammation effects...
May 18, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28521869/high-fgf21-levels-are-associated-with-altered-bone-homeostasis-in-hiv-1-infected-patients
#6
José M Gallego-Escuredo, Maria Karuna Lamarca, Joan Villarroya, Joan C Domingo, Ma Gracia Mateo, Ma Del Mar Gutierrez, Francesc Vidal, Francesc Villarroya, Pere Domingo, Marta Giralt
BACKGROUND: Fibroblast growth factor-21 (FGF21) has emerged as an important regulator of glucose, lipid, and body weight homeostasis. However, recent experimental studies have reported that increased FGF21 levels may lead to bone loss. OBJECTIVE: To assess the relationship of serum FGF21 levels and altered bone homeostasis in HIV-1-infected patients. DESIGN: Cross-sectional study of 137 HIV-1-infected patients and 35 healthy controls conducted at the Hospital de la Santa Creu i Sant Pau, Barcelona...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28518476/adult-onset-chronic-cyclic-thrombocytopenia-in-a-rhesus-macaque-macaca-mulatta-after-dengue-virus-vaccination-and-viral-challenge
#7
Galit H Frydman, Kelly A Metcalf Pate, Robert P Marini, Armelle M de Laforcade, Irene Bosch, Vasudevan Bakthavatchalu, Sureshkumar Muthupalani, Alton G Swennes, Claire E Lyons, Ronald G Tompkins, James G Fox
An 8-year-old, male Rhesus macaque (Macaca mulatta), previously used for dengue virus (DENV) vaccine research with viral challenge, was presented with adult-onset, chronic, cyclic thrombocytopenia. Platelet number, morphology, and function were evaluated by automated hematology, peripheral blood smears, electron microscopy, flow cytometry, and impedance aggregometry. Bone marrow was evaluated by cytology. Both serum anti-dengue nonstructural protein 1 (NS1) antibodies and anti-platelet antibodies were detected by ELISA...
May 18, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28518142/mir-130a-3p-attenuates-activation-and-induces-apoptosis-of-hepatic-stellate-cells-in-nonalcoholic-fibrosing-steatohepatitis-by-directly-targeting-tgfbr1-and-tgfbr2
#8
Yang Wang, Jinghua Du, Xuemin Niu, Na Fu, Rongqi Wang, Yuguo Zhang, Suxian Zhao, Dianxing Sun, Yuemin Nan
Nonalcoholic fibrosing steatohepatitis is a uniform process that occurs throughout nonalcoholic fatty liver disease (NAFLD). MicroRNAs (miRNAs) have been shown to be involved in the biological processes, but the role and molecular mechanism of miRNAs in NAFLD are not entirely clear. In this study, we observed a significant reduction in the expression of miR-130a-3p in livers of a mouse model with fibrosis induced by a methionine-choline-deficient diet, of NAFLD patients, and in activated hepatic stellate cells (HSCs)...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518137/nerve-growth-factor-from-chinese-cobra-venom-stimulates-chondrogenic-differentiation-of-mesenchymal-stem-cells
#9
Zhenhui Lu, Danqing Lei, Tongmeng Jiang, Lihui Yang, Li Zheng, Jinmin Zhao
Growth factors such as transforming growth factor beta1 (TGF-β1), have critical roles in the regulation of the chondrogenic differentiation of mesenchymal stem cells (MSCs), which promote cartilage repair. However, the clinical applications of the traditional growth factors are limited by their high cost, functional heterogeneity and unpredictable effects, such as cyst formation. It may be advantageous for cartilage regeneration to identify a low-cost substitute with greater chondral specificity and easy accessibility...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28506859/the-obstructed-bladder-expression-of-collagen-matrix-metalloproteinases-muscarinic-receptors-angiogenic-and-neurotrophic-factors-in-patients-with-benign-prostatic-hyperplasia
#10
João Arthur Brunhara Alves Barbosa, Sabrina T Reis, Marco Nunes, Yuri A Ferreira, Katia R Leite, William C Nahas, Miguel Srougi, Alberto A Antunes
OBJECTIVE: to evaluate gene expression of Collagen, Matrix Metalloproteinases (MMP) and Inhibitors, Cholinergic Muscarinic Receptors (CHRM), Angiogenic and Nerve Growth Factors (NGF) in the bladder of patients with Bladder Outlet Obstruction due to Benign Prostatic Hyperplasia METHODS: We analyzed bladder specimens from 43 patients with obstructive BPH undergoing TURP as compared to 10 age-matched controls with IPSS<8 and prostate <30g. A bladder biopsy was performed for relative gene expression analysis with qRT-PCR of Collagens I and III, MMPs 1,2,9; Tissue Inhibitors of Metalloproteinases (TIMP) 1,2 and RECK; CHRM2 and -3; VEGF, CD105; NGF and NGF receptor...
May 12, 2017: Urology
https://www.readbyqxmd.com/read/28501760/stromal-pdgfr-%C3%AE-activation-enhances-matrix-stiffness-impedes-mammary-ductal-development-and-accelerates-tumor-growth
#11
Anisha M Hammer, Gina M Sizemore, Vasudha C Shukla, Alex Avendano, Steven T Sizemore, Jonathan J Chang, Raleigh D Kladney, Maria C Cuitiño, Katie A Thies, Quinn Verfurth, Arnab Chakravarti, Lisa D Yee, Gustavo Leone, Jonathan W Song, Samir N Ghadiali, Michael C Ostrowski
The extracellular matrix (ECM) is critical for mammary ductal development and differentiation, but how mammary fibroblasts regulate ECM remodeling remains to be elucidated. Herein, we used a mouse genetic model to activate platelet derived growth factor receptor-alpha (PDGFRα) specifically in the stroma. Hyperactivation of PDGFRα in the mammary stroma severely hindered pubertal mammary ductal morphogenesis, but did not interrupt the lobuloalveolar differentiation program. Increased stromal PDGFRα signaling induced mammary fat pad fibrosis with a corresponding increase in interstitial hyaluronic acid (HA) and collagen deposition...
May 11, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28501138/submucosal-neurons-and-enteric-glial-cells-expressing-the-p2x7-receptor-in-rat-experimental-colitis
#12
Marcos Vinícius da Silva, Aline Rosa Marosti, Cristina Eusébio Mendes, Kelly Palombit, Patricia Castelucci
The aim of this study was to evaluate the effect of ulcerative colitis on the submucosal neurons and glial cells of the submucosal ganglia of rats. 2,4,6-Trinitrobenzene sulfonic acid (TNBS; colitis group) was administered in the colon to induce ulcerative colitis, and distal colons were collected after 24h. The colitis rats were compared with those in the sham and control groups. Double labelling of the P2X7 receptor with calbindin (marker for intrinsic primary afferent neurons, IPANs, submucosal plexus), calretinin (marker for secretory and vasodilator neurons of the submucosal plexus), HuC/D and S100β was performed in the submucosal plexus...
May 10, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28501115/postconditioning-attenuates-coronary-perivascular%C3%A2-and-interstitial-fibrosis-through-modulating-angiotensin-ii-receptors-and-angiotensin-converting-enzyme-2-after-myocardial-infarction
#13
Zhang-Feng Wang, Ning-Ping Wang, Suzanna Harmouche, Tiji Philip, Xue-Fen Pang, Feng Bai, Zhi-Qing Zhao
BACKGROUND: Postconditioning (Postcon) is known to reduce infarct size. This study tested the hypothesis that Postcon attenuates the perivascular and interstitial fibrosis after myocardial infarction through modulating angiotensin II-activated fibrotic cascade. MATERIALS AND METHODS: Male Sprague-Dawley rats were subjected to 45-min coronary occlusion followed by 1 and 6 wk of reperfusion. Postcon was applied at the onset of reperfusion with four cycles of 10/10-s reperfusion-ischemia at the onset of reperfusion...
May 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28501006/liquid-chromatography-mass-spectrometry-based-quantitative-proteomics-analysis-reveals-chondroprotective-effects-of-astragaloside-iv-in-interleukin-1%C3%AE-induced-sw1353-chondrocyte-like-cells
#14
Huali Luo, Ling Yao, Yudi Zhang, Rongheng Li
OBJECTIVE: Chondrocyte apoptosis played a key role on the progression of Osteoarthritis (OA). Safe and effective drugs are urgently needed for the treatment of OA. Previous study reported that Astragaloside IV (ASG-IV) had exerted a protective effect against articular cartilage degeneration by promoting rapid proliferation of chondrocyte. Therefore, the aim of our study is to explore the effects and mechanisms of ASG-IV in chondrocyte apoptosis. METHODS: Isobaric Tags For Relative And Absolute Quantitation (iTRAQ)-based quantitative proteomics was used to quantitatively detect and map proteins in SW1353 chondrocyte-like cells pre-treated with ASG-IV or interleukin-1β (IL-1β) or ASG-IV+IL-1β...
May 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28500970/histopathological-changes-and-lipid-metabolism-in-the-liver-of-bufo-gargarizans-tadpoles-exposed-to-triclosan
#15
Lihong Chai, Aixia Chen, Pingping Luo, Hongfeng Zhao, Hongyuan Wang
In the current study, the adverse effects of TCS on liver health of B. gargarizans tadpoles were assessed. B. gargarizans larvae were exposed to TCS at 0, 10, 30, 60, and 150 μg L(-1) from Gosner stage 3 until metamorphic climax. The hepatosomatic index (HSI), hepatic histological and ultrastructural features, and transcript levels of genes associated with detoxification and oxidative stress as well as lipid metabolism in the livers were determined. Exposure to 150 μg L(-1) TCS resulted in increased HSI of tadpoles at metamorphic climax...
May 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/28500745/advanced-oxidation-protein-products-induce-hepatocyte-epithelial-mesenchymal-transition-via-a-ros-dependent-tgf-%C3%AE-smad-signaling-pathway
#16
Shibo Sun, Fang Xie, Qifan Zhang, Zhonglin Cui, Xinsheng Cheng, Feng Zhong, Kun He, Jie Zhou
Epithelial-mesenchymal transition (EMT) occurs during the progression of liver fibrosis in response to chronic liver injury. However, the molecular mechanism underlying the regulation of hepatocyte EMT remains unclear. The aim of this study was to determine whether advanced oxidation protein products (AOPP) had an effect on hepatocyte EMT. The human L02 hepatocyte cell line and hepatocytes from normal Sprague-Dawley rats were challenged with AOPP treatment in both in vitro and in vivo studies. The expression of cell and molecular markers of EMT in L02 hepatocytes were studied using Western blotting, and quantitative reverse transcription-polymerase chain reaction (qRT-PCR) assays...
May 13, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28498971/deletion-of-rhoa-in-progesterone-receptor-expressing-cells-leads-to-luteal-insufficiency-and-infertility-in-female-mice
#17
Ahmed E El Zowalaty, Rong Li, Yi Zheng, John P Lydon, Francesco J DeMayo, Xiaoqin Ye
RhoA is widely expressed throughout the female reproductive system. To assess its role in progesterone receptor (Pgr) expressing cells, we generated RhoA conditional knockout mice RhoAd/d (RhoAf/f-Pgr-Cre+/-). RhoAd/d females had comparable mating activity, serum LH, prolactin, and estradiol levels and ovulation with control but were infertile with progesterone insufficiency, indicating impaired steroidogenesis in RhoAd/d corpus luteum (CL). RhoA was highly expressed in wild type luteal cells and conditionally deleted in RhoAd/d CL...
May 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28498357/adiponectin-is-involved-in-connective-tissue-growth-factor-induced-proliferation-migration-and-overproduction-of-the-extracellular-matrix-in-keloid-fibroblasts
#18
Limin Luo, Jun Li, Han Liu, Xiaoqing Jian, Qianlei Zou, Qing Zhao, Qu Le, Hongdou Chen, Xinghua Gao, Chundi He
Adiponectin, an adipocyte-derived hormone, exerts pleiotropic biological effects on metabolism, inflammation, vascular homeostasis, apoptosis and immunity. Recently, adiponectin has been suggested to attenuate the progression of human dermal fibrosis. Connective tissue growth factor (CTGF) is induced in keloids and is thought to be participated in the formation of keloid fibrosis. However, the roles played by adiponectin in keloids remain unclear. In this study, we explored the effects of adiponectin on CTGF-induced cell proliferation, migration and the deposition of extracellular matrix (ECM) and their associated intracellular signalling pathways in keloid fibroblasts (KFs)...
May 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28498152/oligoclonal-t-cell-receptor-repertoire-in-colonic-biopsies-of-patients-with-microscopic-colitis-and-ulcerative-colitis
#19
Sezin Günaltay, Dirk Repsilber, Gisela Helenius, Nils Nyhlin, Johan Bohr, Olof Hultgren, Elisabeth Hultgren Hörnquist
BACKGROUND: Microscopic colitis (MC), comprising collagenous colitis (CC) and lymphocytic colitis (LC), is a type of variation of inflammatory bowel diseases. Local T-cell infiltration in the mucosa plays a major role in MC immunopathology. METHODS: To understand diversity and clonality of infiltrating T cells, we analyzed the T-cell receptor beta (TCRβ) chains in colonic biopsies of MC, ulcerative colitis (UC), and their remission counterparts (CC/LC-HR [histological remission] or UC-R [remission]) compared with patients with noninflamed colons using next-generation sequencing...
May 10, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28497879/bone-morphogenetic-protein-5-a-key-molecule-that-mediates-differentiation-in-mc3t3e1-osteoblast-cell-line
#20
Viji Vijayan, Sakshi Gupta, Sarika Gupta
Bone morphogenetic protein-5 (BMP-5) is a member of the TGF receptor-β family with osteoinductive property. However, its physiological role in osteoblast differentiation is not defined. This study highlights the importance of BMP-5 in MC3T3E1 osteoblast differentiation. Pre-osteoblasts exposed to osteogenic media (ascorbic acid, 50 µg/ml and β-glycerophosphate, 10 mM) showed high protein expression of BMP-5 in cell lysates and cell culture supernatants, which peaked during early time-points of differentiation and declined with onset of mineralization...
May 12, 2017: BioFactors
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