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Matrix metalloproteinases

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https://www.readbyqxmd.com/read/28933561/ckap2-promotes-ovarian-cancer-proliferation-and-tumorigenesis-through-the-fak-erk-pathway
#1
Mei Zhang, Longjun Zhao
Upregulation of cytoskeleton-associated protein 2 (CKAP2) has been observed in ovarian cancer. This study aimed to determine the effects of overexpression of CKAP2 on cell proliferation and tumorigenesis and to explore the potential signal pathway in the oncogenic process. Expression of CKAP2 in tissue of ovarian cancer patients was detected. Human cancer cell line SKOV3 was overexpressed with CKAP2 and measured for cell growth and mobility. Moreover, CKAP2 effect was estimated using mouse tumor xenografts...
September 21, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28933476/piceatannol-inhibits-the-il-1%C3%AE-induced-inflammatory-response-in-human-osteoarthritic-chondrocytes-and-ameliorates-osteoarthritis-in-mice-by-activating-nrf2
#2
Qian Tang, Zhenhua Feng, Minji Tong, Jianxiang Xu, Gang Zheng, Liyan Shen, Ping Shang, Yu Zhang, Haixiao Liu
Osteoarthritis (OA) is a complex process, to which an inflammatory environment contributes markedly. Piceatannol exerts anti-inflammatory effects on several diseases. In the current study, we explored the protective effects of piceatannol on the progression of OA and investigated its molecular target. In vitro, piceatannol not only attenuated the over-production of inflammatory mediators and cytokines-such as nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor alpha (TNF-α), and interleukin-6 (IL-6)-but also suppressed the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) at both the mRNA and protein levels...
September 21, 2017: Food & Function
https://www.readbyqxmd.com/read/28932707/neisseria-gonorrhoeae-challenge-increases-matrix-metalloproteinase-8-expression-in-fallopian-tube-explants
#3
Natalia E Juica, Paula I Rodas, Paula Solar, Paula Borda, Renato Vargas, Cristobal Muñoz, Rodolfo Paredes, Myron Christodoulides, Luis A Velasquez
Background:Neisseria gonorrhoeae (Ngo) is the etiological agent of gonorrhea, a sexually transmitted infection that initially infects the female lower genital tract. In untreated women, the bacteria can ascend to the upper genital reproductive tract and infect the fallopian tube (FTs), which is associated with salpingitis and can lead to impaired FT function and infertility. The extracellular matrix (ECM) plays an important role in cell migration and differentiation in the female genital tract, and some pathogens modify the ECM to establish successful infections...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28932082/effects-and-mechanism-of-adenovirus-mediated-phosphatase-and-tension-homologue-deleted-on-chromosome-ten-gene-on-collagen-deposition-in-rat-liver-fibrosis
#4
Shu-Rui Xie, Jun-Yan An, Li-Bo Zheng, Xiao-Xia Huo, Jian Guo, David Shih, Xiao-Lan Zhang
AIM: To evaluate the effects of phosphatase and tension homologue deleted on chromosome ten (PTEN) gene on collagen metabolism in hepatic fibrosis and the underlying mechanisms. METHODS: Rat primary hepatic stellate cells (HSCs) and human LX-2 cells were transfected with adenovirus containing cDNA constructs encoding wild-type PTEN (Ad-PTEN), PTEN mutant G129E gene (Ad-G129E), and RNA interference constructs targeting the PTEN sequence PTEN short hairpin RNA to up-regulate and down-regulate the expression of PTEN...
August 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28931761/periodontal-induced-chronic-inflammation-triggers-macrophage-secretion-of-ccl12-to-inhibit-fibroblast-mediated-cardiac-wound-healing
#5
Kristine Y DeLeon-Pennell, Rugmani Padmanabhan Iyer, Osasere K Ero, Courtney A Cates, Elizabeth R Flynn, Presley L Cannon, Mira Jung, De'Aries Shannon, Michael R Garrett, William Buchanan, Michael E Hall, Yonggang Ma, Merry L Lindsey
Chronic inflammatory diseases, such as periodontal disease, associate with adverse wound healing in response to myocardial infarction (MI). The goal of this study was to elucidate the molecular basis for impaired cardiac wound healing in the setting of periodontal-induced chronic inflammation. Causal network analysis of 168 inflammatory and extracellular matrix genes revealed that chronic inflammation induced by a subseptic dose of Porphyromonas gingivalis lipopolysaccharide (LPS) exacerbated infarct expression of the proinflammatory cytokine Ccl12...
September 21, 2017: JCI Insight
https://www.readbyqxmd.com/read/28931365/predictive-value-of-matrix-metalloproteinases-and-their-inhibitors-for-mortality-in-septic-patients-a-cohort-study
#6
Sergio Serrano-Gomez, Gabriel Burgos-Angulo, Daniela Camila Niño-Vargas, María Eugenia Niño, María Eugenia Cárdenas, Estephania Chacón-Valenzuela, Diana Margarita McCosham, Juan Sebastián Peinado-Acevedo, M Marcos Lopez, Fernando Cunha, Antonio Pazin-Filho, Ramses Ilarraza, Richard Schulz, Diego Torres-Dueñas
PURPOSE: Over 170 biomarkers are being investigated regarding their prognostic and diagnostic accuracy in sepsis in order to find new tools to reduce morbidity and mortality. Matrix metalloproteinases (MMPs) and their inhibitors have been recently studied as promising new prognostic biomarkers in patients with sepsis. This study is aimed at determining the utility of several cutoff points of these biomarkers to predict mortality in patients with sepsis. MATERIALS AND METHODS: A multicenter, prospective, analytic cohort study was performed in the metropolitan area of Bucaramanga, Colombia...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28930548/l-name-improves-doxycycline-and-ml-7-cardioprotection-from-oxidative-stress
#7
Iwona Bil-Lula, Anna Krzywonos-Zawadzka, Jolanta Sawicka, Dariusz Bialy, Magdalena Wawrzynska, Mieczyslaw Wozniak, Grzegorz Sawicki
Matrix metalloproteinase-2 (MMP-2) mediated degradation of myosin light chain 1 (MLC1) and troponin I (TnI) contributes to myocardial ischemia/reperfusion (I/R) injury. Modifications of MLC1 triggered by oxidative stress are mediated by myosin light chain kinase (MLCK), nitric oxide synthase (NOS), and MMP-2. Previous studies have shown that inhibiting both MLCK and MMP-2 protects against I/R injury. Here, we hypothesized that the addition of NOS inhibitor (L-NAME) at subprotective concentration to the mixture of subprotective concentrations of ML-7 and doxycycline (Doxy), will increase a synergistic cardioprotection of Doxy and ML-7 during I/R...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28929923/rethinking-brain-cancer-therapy-tumor-enzyme-activatable-theranostic-nanoparticles
#8
Heike E Daldrup-Link
This invited commentary discusses a recent article by Mohanty et al in Molecular Cancer Therapeutics about significant therapeutic efficacies of novel theranostic nanoparticles (TNPs) for the treatment of human brain cancers in mouse models. The TNPs were cleaved by enzymes in the tumor tissue, matrix metalloproteinase (MMP-14), which lead to release of a highly potent therapeutic drug, azademethylcolchicine. Data showed that the TNPs caused selective toxic effects in MMP-14-expressing glioblastoma and not normal brain...
January 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28929915/is-synovitis-detected-on-non-contrast-enhanced-magnetic-resonance-imaging-associated-with-serum-biomarkers-and-clinical-signs-of-effusion-data-from-the-osteoarthritis-initiative
#9
L A Deveza, V B Kraus, J E Collins, A Guermazi, F W Roemer, M C Nevitt, D J Hunter
OBJECTIVES: To determine the relationship between synovitis detected on non-contrast-enhanced (non-CE) magnetic resonance imaging (MRI), biochemical markers of inflammation, and clinical assessment of effusion in people with knee osteoarthritis (OA). METHOD: We examined data from the OA Biomarkers Consortium within the Osteoarthritis Initiative (n = 600). Non-CE MRIs were semi-quantitatively scored (grades 0-3) for severity of Hoffa synovitis and effusion synovitis...
September 20, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28929861/ulipristal-acetate-and-extracellular-matrix-production-in-human-leiomyomas-in-vivo-a-laboratory-analysis-of-a-randomized-placebo-controlled-trial
#10
Jeris Cox, Minnie Malik, Joy Britten, Terrence Lewis, William H Catherino
In a prior randomized controlled study, patients treated with ulipristal acetate (UPA) or placebo for 3 months had a decrease in leiomyoma size. A total of 10 patients' tissue samples (5 placebo and 5 treated with 10 mg/d UPA) that underwent hysterectomy and tissue preservation were identified from this study. Quantitative real-time reverse transcriptase polymerase chain reaction and Western blotting were used to assess fold gene and protein expression of extracellular membrane (ECM) proteins: collagen 1A (COL1A), fibronectin (FN1), and versican (VCAN) of the samples...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28929659/-effects-and-mechanisms-of-shenkang-injection-promoting-extracellular-matrix-degradation-via-regulating-erk1-2-mmps-signaling-pathway-in-renal-failure-rats
#11
Jing-Jing Yang, Zhi-Min Mao, Yi-Gang Wan, Wei Wu, Yan-Ru Huang, Ge Shi, Wen-Bei Han, Jian Yao
This study aimed to clarify preliminarily the effects and mechanisms of Shenkang injection (SKI) promoting extracellular matrix(ECM)degradation via regulating extracellular-signal regulated protein kinase(ERK)1/2/matrix metalloproteinases(MMPs)signaling pathway in renal failure rats. Twenty rats were randomly divided into 4 groups:the Sham group,the Model group,the SKI group and the Enalapril maleate(EM)group. The model rats with renal failure were induced by intragastric administration of adenine and unilateral ureteral obstruction(UUO)...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929560/minocycline-and-matrix-metalloproteinase-inhibition-in-acute-intracerebral-hemorrhage-a-pilot-study
#12
J J Chang, M Kim-Tenser, B A Emanuel, G M Jones, K Chapple, A Alikhani, N Sanossian, W J Mack, G Tsivgoulis, A V Alexandrov, T Pourmotabbed
BACKGROUND AND PURPOSE: Intracerebral hemorrhage (ICH) is a devastating cerebrovascular disorder with high morbidity and mortality. Minocycline is a matrix metalloproteinase-9 (MMP-9) inhibitor that may attenuate secondary mechanisms of injury in ICH. The feasibility and safety of minocycline in ICH patients were evaluated in a pilot, double-blinded, placebo-controlled randomized clinical trial. METHODS: Patients with acute onset (<12 h from symptom onset) ICH and small initial hematoma volume (<30 ml) were randomized to high-dose (10 mg/kg) intravenous minocycline or placebo...
September 20, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28928871/twisted-gastrulation-bmp-signaling-modulator-1-regulates-papillary-thyroid-cancer-cell-motility-and-proliferation
#13
Shujun Xia, Ri Ji, Yongmin Xu, Xiaofeng Ni, Yijie Dong, Weiwei Zhan
Bone morphogenetic proteins (BMPs) are growth factors that have important functions in cell proliferation, migration and differentiation. To date, BMP pathway activation has been found in multiple human tumors and is associated with enhanced malignant tumor growth and metastasis. BMP activity is tightly regulated by a family of soluble extracellular secreted BMP modulators. Twisted gastrulation BMP signaling modulator 1 (TWSG1) is a direct BMP regulator that is required for the full signaling activity of BMPs...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928847/anti-angiogenic-effect-of-arsenic-trioxide-in-lung-cancer-via-inhibition-of-endothelial-cell-migration-proliferation-and-tube-formation
#14
Meng-Hang Yang, Ke-Jie Chang, Jin-Cheng Zheng, Hai Huang, Guang-Yuan Sun, Xue-Wei Zhao, Bing Li, Qing-Yu Xiu
Arsenic trioxide (As2O3) exhibits a remarkable effect on leukemia treatment; however, its effect on solid tumors remains poorly explored. The present study demonstrated the inhibitory effect of As2O3 on lung cancer and explored its possible mechanism. It was observed that As2O3 significantly inhibited the growth of lung cancer xenografts and tumor angiogenesis in vivo. The inhibitory effect of As2O3 on cell proliferation in vitro was more remarkable in vascular endothelial cells than in lung cancer cells. It was also observed that As2O3 inhibited the migration of vascular endothelial cells and disrupted vascular tube formation on Matrigel assays...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928824/isobavachalcone-inhibits-the-proliferation-and-invasion-of-tongue-squamous-cell-carcinoma-cells
#15
Yi Shi, Wei-Zhong Wu, An Huo, Wei Zhou, Xiao-Hong Jin
Isobavachalcone (2',4',4-trihydroxy-3'-[3'-methylbut-3'-ethyl] chalcone or IBC) exhibits anticancer activities in a number of types of cancer cell. However, its role in tongue squamous cell carcinoma (TSCC) cells remains unclear. The aim of the present study was to investigate the biological effect of IBC in TSCC Tca8113 cells. The function of IBC on Tca8113 cell apoptosis and apoptosis-associated signaling pathways was determined using an MTT assay, morphological staining, annexin V-propidium iodide (PI) staining and Western blot analysis...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928633/glutaminase-and-mmp-9-downregulation-in-cortex-and-hippocampus-of-lpa1-receptor-null-mice-correlate-with-altered-dendritic-spine-plasticity
#16
Ana Peñalver, José A Campos-Sandoval, Eduardo Blanco, Carolina Cardona, Laura Castilla, Mercedes Martín-Rufián, Guillermo Estivill-Torrús, Raquel Sánchez-Varo, Francisco J Alonso, Mercedes Pérez-Hernández, María I Colado, Antonia Gutiérrez, Fernando Rodríguez de Fonseca, Javier Márquez
Lysophosphatidic acid (LPA) is an extracellular lipid mediator that regulates nervous system development and functions acting through G protein-coupled receptors (GPCRs). Here we explore the crosstalk between LPA1 receptor and glutamatergic transmission by examining expression of glutaminase (GA) isoforms in different brain areas isolated from wild-type (WT) and KOLPA1 mice. Silencing of LPA1 receptor induced a severe down-regulation of Gls-encoded long glutaminase protein variant (KGA) (glutaminase gene encoding the kidney-type isoforms, GLS) protein expression in several brain regions, particularly in brain cortex and hippocampus...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28928383/human-stem-cells-alter-the-invasive-properties-of-somatic-cells-via-paracrine-activation-of-mtorc1
#17
Margit Rosner, Ha Thi Thanh Pham, Richard Moriggl, Markus Hengstschläger
Controlled invasion is essential during many physiological processes, whereas its deregulation is a hallmark of cancer. Here we demonstrate that embryonic, induced pluripotent and amniotic fluid stem cells share the property to induce the invasion of primary somatic cells of various origins through insulin-like growth factor I (IGF-I)- or II (IGF-II)-mediated paracrine activation of mechanistic target of rapamycin complex 1 (mTORC1). We propose a model in which downstream of mTORC1 this stem cell-induced invasion is mediated by hypoxia-inducible factor 1-alpha (HIF-1α)-regulated matrix metalloproteinases...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28927932/chitosan-doxycycline-hydrogel-an-mmp-inhibitor-sclerosing-embolizing-agent-as-a-new-approach-to-endoleak-prevention-and-treatment-after-endovascular-aneurysm-repair
#18
Fatemeh Zehtabi, Pompilia Ispas-Szabo, Djahida Djerir, Lojan Sivakumaran, Borhane Annabi, Gilles Soulez, Mircea Alexandru Mateescu, Sophie Lerouge
The success of endovascular repair of abdominal aortic aneurysms remains limited due to the development of endoleaks. Sac embolization has been proposed to manage endoleaks, but current embolizing materials are associated with frequent recurrence. An injectable agent that combines vascular occlusion and sclerosing properties has demonstrated promise for the treatment of endoleaks. Moreover, the inhibition of aneurysmal wall degradation via matrix metalloproteinases (MMPs) may further prevent aneurysm progression...
September 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28927692/prognostic-influence-of-tumor-stroma-on-breast-cancer-subtypes
#19
Sandra Cid, Noemi Eiro, Berta Fernández, Rosario Sánchez, Alejandro Andicoechea, Pablo Ignacio Fernández-Muñiz, Luis O González, Francisco J Vizoso
INTRODUCTION: The objective of the present work was to evaluate the impact of the phenotype of both intratumoral mononuclear inflammatory cells (MICs) and cancer-associated fibroblast (CAFs), assessed as to their expression of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) on prognosis in different breast cancer subtypes. MATERIALS AND METHODS: A total of 247 tumors of patients with primary ductal invasive breast cancer were categorized into 1 of 4 major subtypes, using the 3 standard immunohistochemical markers (estrogen receptor [ER], progesterone receptor [PR], and human epidermal growth factor receptor/Neu 2 [HER2] receptor status)...
August 19, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28927156/activation-of-%C3%AE-adrenergic-receptor-promotes-cellular-proliferation-in-human-glioblastoma
#20
Jing-Jing He, Wen-Hua Zhang, Shi-Ling Liu, Yi-Fang Chen, Chen-Xi Liao, Qian-Qing Shen, Ping Hu
Glioblastoma multiforme is the most common and aggressive form of primary malignant brain tumor. Previous evidence demonstrates that β-adrenergic receptors (β-ARs) are closely associated with the occurrence and development of brain tumors. However, the functional role of β-ARs in human glioblastoma and the underlying mechanisms are not fully understood. In the present study, by using the MTT assay, western blotting, and the reverse transcription polymerase chain reaction, it was revealed that isoproterenol (ISO), an agonist of β-ARs, promoted the proliferation of U251 cells but not U87-MG cells, and that this effect was blocked by the β-ARs antagonist propranolol...
September 2017: Oncology Letters
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