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https://www.readbyqxmd.com/read/27902771/piceatannol-attenuates-renal-fibrosis-induced-by-unilateral-ureteral-obstruction-via-downregulation-of-histone-deacetylase-4-5-or-p38-mapk-signaling
#1
Sin Young Choi, Zhe Hao Piao, Li Jin, Jung Ha Kim, Gwi Ran Kim, Yuhee Ryu, Ming Quan Lin, Hyung-Seok Kim, Hae Jin Kee, Myung Ho Jeong
Piceatannol, a resveratrol metabolite, is a phenolic compound found in red wine and grapes. We investigated the effect of piceatannol on renal fibrosis and histone deacetylase (HDAC) expression in a mouse model of unilateral ureteral obstruction (UUO). Fibrosis was established by UUO and piceatannol was intraperitoneally injected for 2 weeks. Piceatannol suppressed extracellular matrix (ECM) protein deposition including collagen type I and fibronectin as well as connective tissue growth factor (CTGF) and α-smooth muscle actin (α-SMA) in UUO kidneys...
2016: PloS One
https://www.readbyqxmd.com/read/27894619/expression-of-pro-fibrotic-and-anti-fibrotic-molecules-in-dimethylnitrosamine-induced-hepatic-fibrosis
#2
Roberta Sferra, Antonella Vetuschi, Simona Pompili, Eugenio Gaudio, Silvia Speca, Giovanni Latella
BACKGROUND: Hepatic fibrosis is characterized by a progressive accumulation of fibrillar extracellular matrix (ECM) proteins, produced by activated myofibroblasts which are modulated by both profibrotic and antifibrotic factors. OBJECTIVE: To evaluate in vivo the expression of pro-fibrotic molecules like avβ6 integrin, transforming growth factor-β (TGF-β), Smad3, connective tissue growth factor (CTGF) and mammalian target of Rapamycin (mTOR), as well as anti-fibrotic peroxisome proliferator-activated receptor-γ (PPARγ) in an experimental model of chronic hepatitis-associated fibrosis induced by intraperitoneal administration of dimethylnitrosamine (DMN) in mice...
November 11, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27894387/-effect-of-hydrocinnamoyl-l-valyl-pyrrolidine-on-healing-quality-of-deep-partial-thickness-scald-wound-in-mice
#3
M L Yang, Y H Li, Q Tan, J T Li, L L Que
Objective: To observe the effect of Toll interleukin-1 recptor homology/BB-loop mimetic hydrocinnamoyl-L-valyl pyrrolidine (AS-1) on the healing quality of deep partial-thickness scald wound in mice. Methods: Forty-two adult C57BL/6 mice were divided into sham injury group (SI), scald group (S), early AS-1 treatment group (EAT), early dimethyl sulfoxide (DMSO) control group (EDC), late AS-1 treatment group (LAT), late DMSO control group (LDC) according to the random number table, with 7 mice in each group. Mice in group SI were sham injured without other treatment...
November 20, 2016: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/27889505/candesartan-ameliorates-arsenic-induced-hypertensive-vascular-remodeling-by-regularizing-angiotensin-ii-and-tgf-beta-signaling-in-rats
#4
Maibam Wanta Khuman, Sankaran Kutty Harikumar, Abdul Sadam, Manickam Kesavan, Vattaparambil Sukumaran Susanth, Subhashree Parida, Karam Pal Singh, Souvendra Nath Sarkar
Arsenic exposure can cause several cardiovascular diseases, including hypertension, atherosclerosis and microvascular disease. Earlier, we reported that arsenic-mediated enhancement of angiotensin II (AngII) signaling can impair vascular physiology. Here, we investigated whether the AT1 receptor (AT1R) blocker candesartan can ameliorate the arsenic-induced hypertensive vascular remodeling in rats and whether the amelioration could relate to attenuation in vascular AngII and TGF-β signaling. Rats were exposed to sodium arsenite (50ppm) through drinking water for 90 consecutive days...
November 23, 2016: Toxicology
https://www.readbyqxmd.com/read/27883059/hepatic-satb1-induces-paracrine-activation-of-hepatic-stellate-cells-and-is-upregulated-by-hbx
#5
Jin Gong, Wei Tu, Jian Han, Jiayi He, Jingmei Liu, Ping Han, Yunwu Wang, Mengke Li, Mei Liu, Jiazhi Liao, Dean Tian
Chronic hepatitis B virus (HBV) infection is a major cause of chronic liver diseases, but its involvement in hepatic fibrogenesis remains unclear. Special AT-rich binding protein 1 (SATB1) has been implicated in reprogramming chromatin organization and transcription profiles in many cancers and non-cancer-related conditions. We found that hepatic SATB1 expression was significantly up-regulated in fibrotic tissues from chronic hepatitis B virus (HBV)-infected patients and HBV transgenic (HBV-Tg) mouse model...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27881436/knockdown-of-histidine-rich-calcium-binding-protein-hrc-suppresses-liver-fibrosis-by-inhibiting-the-activation-of-hepatic-stellate-cells
#6
Jingmei Liu, Mengke Li, Jin Gong, Ping Han, Yunwu Wang, Dean Tian, Jiazhi Liao
The histidine-rich calcium binding protein (HRC) is a regulator of Ca(2+)- homeostasis and it plays a significant role in hepatocellular carcinoma (HCC) progression. However, the relationship between HRC and liver fibrogenesis is still unknown. Our data demonstrated that HRC was upregulated in fibrotic liver and activated HSCs. TGF-β treatment increased α-SMA and HRC expression dose-dependently in HSCs. Repression of HRC reduced α-SMA, CTGF and collagens expression, and inhibited HSCs proliferation and migration...
November 23, 2016: Biology Open
https://www.readbyqxmd.com/read/27881410/taz-activation-drives-fibroblast-spheroid-growth-expression-of-pro-fibrotic-paracrine-signals-and-context-dependent-ecm-gene-expression
#7
Amy J Jorgenson, Kyoung Moo Choi, Delphine Sicard, Karry M J Smith, Samantha E Hiemer, Xaralabos Varelas, Daniel J Tschumperlin
Recent studies have implicated the Hippo pathway and its transcriptional effectors YAP and TAZ as necessary for fibroblast activation and tissue fibrosis. To test the specific and sufficient roles for TAZ in driving autonomous fibroblast activation, we cultured NIH3T3 fibroblasts expressing a doxycycline-inducible nuclear-localized mutant of TAZ (TAZ4SA) in scaffold-free 3D hanging drop spheroids, or on matrices of specified mechanical rigidity. Control NIH3T3 fibroblasts formed spheroids in hanging drop culture that remained stable and neither increased nor decreased in size significantly over 15 days...
November 23, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27875740/conditional-knockout-of-tfpi-1-in-vsmcs-of-mice-accelerates-atherosclerosis-by-enhancing-amot-yap-pathway
#8
Jiajun Xiao, Kaiyue Jin, Jiping Wang, Jing Ma, Jin Zhang, Nan Jiang, Huijun Wang, Xinping Luo, Jian Fei, Zhugang Wang, Xiao Yang, Duan Ma
BACKGROUND: Tissue factor pathway inhibitor-1 (TFPI-1) has multiple functions and its precise role and molecular mechanism during the development of atherosclerosis are not clear. OBJECTIVES: To determine the effect and molecular mechanism of TFPI-1 deficiency in vascular smooth muscle cells (VSMCs) in atherosclerosis in the apolipoprotein E knockout (ApoE(-/-)) mouse. METHODS AND RESULTS: A mouse model with a conditional knockout of TFPI-1 in VSMCs in an atherosclerosis-prone background (ApoE(-/-)) was generated...
November 12, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27874055/the-coordinated-roles-of-mir-26a-and-mir-30c-in-regulating-tgf%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-diabetic-nephropathy
#9
Zongji Zheng, Meiping Guan, Yijie Jia, Dan Wang, Ruoyu Pang, Fuping Lv, Zhizhou Xiao, Ling Wang, Hongbin Zhang, Yaoming Xue
MicroRNAs (miRNAs) play vital roles in the development of diabetic nephropathy. Here, we compared the protective efficacies of miR-26a and miR-30c in renal tubular epithelial cells (NRK-52E) and determined whether they demonstrated additive effects in the attenuation of renal fibrosis. TGFβ1 suppressed miR-26a and miR-30c expression but up-regulated pro-fibrotic markers in NRK-52E cells, and these changes were also found in the kidney cortex of 40-week-old diabetic Otsuka Long-Evans Tokushima fatty (OLETF) rats...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27872076/anti-schistosomiasis-liver-fibrosis-effects-of-chlorogenic-acid-through-il-13-mir-21-smad7-signaling-interactions-in-vivo-and-in-vitro
#10
Yao Wang, Fan Yang, Jun Xue, Xuan Zhou, Lei Luo, Qian Ma, Yun-Fei Chen, Juan Zhang, Shu-Ling Zhang, Lei Zhao
This study is to investigate the anti-Schistosomiasis liver fibrosis effects of chlorogenic acid (CGA) on IL-13/miR-21/Smad7 signaling interactions in hepatic stellate LX2 cell line and Schistosome-infected mice. The transfection was based on the GV273-miR-21-EGFP and GV369-miR-21-EGFP lentiviral system to up- or down-regulate miR-21 gene in LX2 cells. The mRNA expression of miR-21, Smad7 and connective tissue growth factor (CTGF) and protein expression of Smad7, CTGF, Smad1, p-Smad1, Smad2, p-Smad2, Smad2/3, p-Smad2/3, TGF-β receptor I and α-SMA were assayed...
November 21, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27863509/profibrotic-mediators-in-tendon-disease-a-systematic-review
#11
Wataru Morita, Sarah Jane Bothwell Snelling, Stephanie Georgina Dakin, Andrew Jonathan Carr
BACKGROUND: Tendon disease is characterized by the development of fibrosis. Transforming growth factor beta (TGF-β), bone morphogenic proteins (BMPs) and connective tissue growth factor (CTGF) are key mediators in the pathogenesis of fibrotic disorders. The aim of this systematic review was to investigate the evidence for the expression of TGF-β, BMPs and CTGF along tendon disease progression and the response of tendon cells to these growth factors accordingly. METHOD: We conducted a systematic screen of the scientific literature using the Medline database...
November 18, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27863006/the-role-of-ccn5-wisp2-protein-in-pancreatic-islets
#12
REVIEW
Jun-Li Liu, Nancy Kaddour, Subrata Chowdhury, Qing Li, Zu-Hua Gao
In search of direct targets of IGF-I action, we discovered CCN5/WISP2 as a novel protein expressed in pancreatic β-cells. As a member of Cyr61 (connective tissue growth factor in human), CTGF (cysteine rich 61, in mouse), and Nov (nephroblastoma overexpressed, in chicken) family, IGF-I together with Wnt signaling stimulate its expression. When overexpressed in insulinoma cells, CCN5 promotes cell proliferation and cell survival against streptozotocin-induced cell death. The cell proliferation effect seems to be caused by AKT phosphorylation and increased cyclin D1 level...
November 12, 2016: Journal of Diabetes
https://www.readbyqxmd.com/read/27859294/tgf-%C3%AE-antagonist-attenuates-fibrosis-but-not-luminal-narrowing-in-experimental-tracheal-stenosis
#13
Juan L Antón-Pacheco, Alicia Usategui, Iván Martínez, Carmen M García-Herrero, Antonio P Gamez, Montserrat Grau, Ana M Martínez, José L Rodríguez-Peralto, José L Pablos
OBJECTIVE: Acquired tracheal stenosis (ATS) is an unusual disease often secondary to prolonged mechanical trauma. Acquired tracheal stenosis pathogenesis involves inflammation and subsequent fibrosis with narrowing of the tracheal lumen. Transforming growth factor-β1 (TGF-β) represents a pivotal factor in most fibrotic processes, and therefore a potential target in this context. The aim of this study is to analyze the role of TGF-β as a target for anti-fibrotic interventions in tracheal stenosis...
November 16, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27851781/characterization-of-a-novel-dermal-fibrosis-model-induced-by-areca-nut-extract-that-mimics-oral-submucous-fibrosis
#14
Min-Hsuan Chiang, Ping-Ho Chen, Yuk-Kwan Chen, Chia-Hsin Chen, Mei-Ling Ho, Yan-Hsiung Wang
Oral submucous fibrosis (OSF) is an oral potentially malignant disorder and areca quid chewing is the main etiological factor. However, the molecular mechanism underlying OSF remains unclear, partly due to the lack of an appropriate animal model. The present study aimed to establish and characterize an animal model of areca nut extract (ANE)-induced skin fibrosis that mimics OSF. Mice were divided into 4 groups: the control group; the bleomycin group; and the ANE10 and ANE20 groups, which received 10mg/ml and 20mg/ml subcutaneous (SC) injection of ANE, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/27829832/members-of-the-cyr61-ctgf-nov-protein-family-emerging-players-in-hepatic-progenitor-cell-activation-and-intrahepatic-cholangiocarcinoma
#15
Qunfeng Wu, Marda Jorgensen, Joanna Song, Junmei Zhou, Chen Liu, Liya Pi
Hepatic stem/progenitor cells (HPC) reside quiescently in normal biliary trees and are activated in the form of ductular reactions during severe liver damage when the replicative ability of hepatocytes is inhibited. HPC niches are full of profibrotic stimuli favoring scarring and hepatocarcinogenesis. The Cyr61/CTGF/NOV (CCN) protein family consists of six members, CCN1/CYR61, CCN2/CTGF, CCN3/NOV, CCN4/WISP1, CCN5/WISP2, and CCN6/WISP3, which function as extracellular signaling modulators to mediate cell-matrix interaction during angiogenesis, wound healing, fibrosis, and tumorigenesis...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/27829066/galectin-3-blockade-reduces-renal-fibrosis-in-two-normotensive-experimental-models-of-renal-damage
#16
Ernesto Martinez-Martinez, Jaime Ibarrola, Laurent Calvier, Amaya Fernandez-Celis, Celine Leroy, Victoria Cachofeiro, Patrick Rossignol, Natalia Lopez-Andres
BACKGROUND: Galectin-3 (Gal-3), a β-galactoside-binding lectin, is increased in kidney injury and its pharmacological blockade reduces renal damage in acute kidney injury, hyperaldosteronism or hypertensive nephropathy. We herein investigated the effects of pharmacological Gal-3 inhibition by modified citrus pectin (MCP) in early renal damage associated with obesity and aortic stenosis (AS). RESULTS: Gal-3 was upregulated in kidneys from high fat diet (HFD) rats and in animals with partial occlusion of ascending aorta (AS)...
2016: PloS One
https://www.readbyqxmd.com/read/27819674/mmtv-cre-ccn6-knockout-mice-develop-tumors-recapitulating-human-metaplastic-breast-carcinomas
#17
E E Martin, W Huang, T Anwar, C Arellano-Garcia, B Burman, J-L Guan, M E Gonzalez, C G Kleer
Metaplastic breast carcinoma is an aggressive form of invasive breast cancer with histological evidence of epithelial to mesenchymal transition (EMT). However, the defining molecular events are unknown. Here we show that CCN6 (WISP3), a secreted matricellular protein of the CCN (CYR61/CTGF/NOV) family, is significantly downregulated in clinical samples of human spindle cell metaplastic breast carcinoma. We generated a mouse model of mammary epithelial-specific Ccn6 deletion by developing a floxed Ccn6 mouse which was bred with an MMTV-Cre mouse...
November 7, 2016: Oncogene
https://www.readbyqxmd.com/read/27815256/toll-like-receptor-4-tlr4-activation-attenuates-pro-fibrotic-response-in-control-lung-fibroblasts-but-not-in-fibroblasts-from-ipf-patients
#18
Simone Ebener, Sandra Barnowski, Carlos Wotzkow, Thomas Michael Marti, Elena Lopez-Rodriguez, Bruno Crestani, Fabian Blank, Ralph Alexander Schmid, Thomas Geiser, Manuela Funke
Idiopathic pulmonary fibrosis (IPF) is a devastating lung disease with a median survival of three years. IPF deteriorates upon viral or bacterial lung infection although pulmonary infection (pneumonia) in healthy lungs rarely induces fibrosis. Bacterial lipopolysaccharide (LPS) activates Toll-like receptor 4 (TLR4) initiating pro-inflammatory pathways. As TLR4 has already been linked to hepatic fibrosis and scleroderma, we now investigated the role of TLR4 in IPF fibroblasts. Lung tissue sections from IPF patients were analyzed for TLR4 expression...
November 4, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27811277/injury-induced-ctgfa-directs-glial-bridging-and-spinal-cord-regeneration-in-zebrafish
#19
Mayssa H Mokalled, Chinmoy Patra, Amy L Dickson, Toyokazu Endo, Didier Y R Stainier, Kenneth D Poss
Unlike mammals, zebrafish efficiently regenerate functional nervous system tissue after major spinal cord injury. Whereas glial scarring presents a roadblock for mammalian spinal cord repair, glial cells in zebrafish form a bridge across severed spinal cord tissue and facilitate regeneration. We performed a genome-wide profiling screen for secreted factors that are up-regulated during zebrafish spinal cord regeneration. We found that connective tissue growth factor a (ctgfa) is induced in and around glial cells that participate in initial bridging events...
November 4, 2016: Science
https://www.readbyqxmd.com/read/27806318/med12-mutations-in-breast-phyllodes-tumors-evidence-of-temporal-tumoral-heterogeneity-and-identification-of-associated-critical-signaling-pathways
#20
Marick Laé, Sophie Gardrat, Sophie Rondeau, Camille Richardot, Martial Caly, Walid Chemlali, Sophie Vacher, Jérôme Couturier, Odette Mariani, Philippe Terrier, Ivan Bièche
Exome sequencing has recently identified highly recurrent MED12 somatic mutations in fibroadenomas (FAs) and phyllodes tumors (PTs). In the present study, based on a large series, we confirmed the presence of MED12 exon 1 and 2 mutations in 49% (41/83) of PTs, 70% (7/10) of FAs and 9.1% (1/11) of fibromatoses. We show that MED12 mutations are associated with benign behavior of phyllodes tumors, as they are detected less frequently in malignant PTs (27.6%) compared to benign (58.3%) and borderline (63.3%) PTs, respectively (p = 0...
October 31, 2016: Oncotarget
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