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Metalloproteinase 9

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https://www.readbyqxmd.com/read/28654890/wogonoside-inhibits-il-1%C3%AE-induced-catabolism-and-hypertrophy-in-mouse-chondrocyte-and-ameliorates-murine-osteoarthritis
#1
Qian Tang, Gang Zheng, Zhenhua Feng, Minji Tong, Jianxiang Xu, Zhiyan Hu, Ping Shang, Yu Chen, Chenggui Wang, Yiting Lou, Deheng Chen, Di Zhang, Majid Nisar, Xiaolei Zhang, Huazi Xu, Haixiao Liu
The inflammatory environment is correlated with extracellular matrix (ECM) degradation and chondrocyte hypertrophy in the development of osteoarthritis (OA). Previous studies have reported the anti-inflammatory effects of wogonoside in several diseases. In the present study, we investigated the protective effects of wogonoside in relation to the development of OA and delineated the potential mechanism. In vitro, wogonoside decreased the production of pro-inflammatory cytokines like Nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor alpha (TNF-α), and interleukin-6 (IL-6)...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28653224/acquisition-of-anoikis-resistance-promotes-alterations-in-the-ras-erk-and-pi3k-akt-signaling-pathways-and-matrix-remodeling-in-endothelial-cells
#2
Ana Paula de Sousa Mesquita, Silvana de Araújo Lopes, Paulo Castanho A Pernambuco Filho, Helena B Nader, Carla Cristina Lopes
Anoikis is a programmed cell death induced upon cell detachment from extracellular matrix. Anoikis resistance is a critical mechanism in tumor metastasis. Cancer cells deregulate and adapt their metabolism to survive in the absence of adhesion, spreading metastases to distant organs. These adaptations include abnormal regulation of growth factor receptors activating prosurvival signaling pathways, such as the Ras/ERK and PI3K/Akt pathways, and extracellular matrix remodeling, leading to metastasis by an increase of invasiveness and inhibiting anoikis...
June 26, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28652766/role-of-matrix-metalloproteinase-9-in-transforming-growth-factor-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-esophageal-squamous-cell-carcinoma
#3
Xue Bai, Yun-Yun Li, Hong-Yan Zhang, Feng Wang, Hong-Liu He, Jin-Chao Yao, Ling Liu, Shan-Shan Li
Epithelial-mesenchymal transition (EMT) is thought to be a crucial event during the early metastasis of tumor cells. Transforming growth factor (TGF)-β1 is involved in the process of EMT in a variety of human malignancies. Matrix metalloproteinase (MMP)-9 plays an important role in tumor invasion and metastasis, and its expression is regulated by various growth factors, including TGF-β1, in different cell types. To date, the role of MMP-9 in TGF-β1-induced EMT in esophageal squamous cell carcinoma (ESCC) remains unclear...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28650691/changes-in-cartilage-biomarker-levels-during-a-transcontinental-multistage-footrace-over-4486-km
#4
Annegret Mündermann, Christopher Klenk, Christian Billich, Corina Nüesch, Geert Pagenstert, Arno Schmidt-Trucksäss, Uwe Schütz
BACKGROUND: Cartilage turnover and load-induced tissue changes are frequently assessed by quantifying concentrations of cartilage biomarkers in serum. To date, information on the effects of ultramarathon running on articular cartilage is scarce. HYPOTHESIS: Serum concentrations of cartilage oligomeric matrix protein (COMP), matrix metalloproteinase (MMP)-1, MMP-3, MMP-9, COL2-3/4C long mono (C2C), procollagen type II C-terminal propeptide (CPII), and C2C:CPII will increase throughout a multistage ultramarathon...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28650334/expression-of-twist-protein-in-colorectal-carcinoma-and-its-effect-on-proliferation-and-invasion-of-colorectal-cancer-cells
#5
Chuanyao Cheng, Yaguang Qin, Yanhua Li, Jia Pan, Jianjun Wang
This paper aims to study Twist protein expression in colorectal carcinoma and its effect on the proliferation and invasion of colorectal cancer cells, and to explore its specific mechanism of promoting cancer. Tissues of 20 patients and specimens of 20 normal people were examined by colonoscopy biopsy; the Twist mRNA expression level was detected by real-time quantitative PCR; the RNA interference in colorectal carcinoma cell line CT-26 cells was performed by lipid transfection method; the effects of Twist interference on proliferation and invasion of colorectal cancer cells were observed by CCK8 assay and tran swell assay; the mRNA and protein levels of mRNA in CT-26 cells were detected by RT-PCR and Western blot...
March 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28648837/integrative-characterization-of-chronic-cigarette-smoke-induced-cardiopulmonary-comorbidities-in-a-mouse-model
#6
Ágnes Kemény, Kata Csekő, István Szitter, Zoltán V Varga, Péter Bencsik, Krisztina Kiss, Róbert Halmosi, László Deres, Krisztián Erős, Anikó Perkecz, László Kereskai, Terézia László, Tamás Kiss, Péter Ferdinandy, Zsuzsanna Helyes
Cigarette smoke-triggered inflammatory cascades and consequent tissue damage are the main causes of chronic obstructive pulmonary disease (COPD). There is no effective therapy and the key mediators of COPD are not identified due to the lack of translational animal models with complex characterization. This integrative chronic study investigated cardiopulmonary pathophysiological alterations and mechanisms with functional, morphological and biochemical techniques in a 6-month-long cigarette smoke exposure mouse model...
June 22, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28648644/quercetin-suppresses-the-metastatic-ability-of-lung-cancer-through-inhibiting-snail-dependent-akt-activation-and-snail-independent-adam9-expression-pathways
#7
Jer-Hwa Chang, Shu-Leung Lai, Wan-Shen Chen, Wen-Yueh Hung, Jyh-Ming Chow, Michael Hsiao, Wei-Jiunn Lee, Ming-Hsien Chien
Metastasis is the major cause of death from lung cancer. Quercetin, a widely distributed bioflavonoid, is well known to induce growth inhibition in a variety of human cancer cells, but how it affects lung cancer cell invasion and metastasis is unclear. Herein, we found that quercetin inhibited the migration/invasion of non-small cell lung cancer (NSCLC) cell lines and bone metastasis in an orthotopic A549 xenograft model by suppressing the Snail-mediated epithelial-to-mesenchymal transition (EMT). Moreover, survival times of animals were also prolonged after quercetin treatment...
June 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28648635/pro-oxidant-pro-inflammatory-alterations-in-the-offspring%C3%A2-s-heart-of-mild-diabetic-rats-are-regulated-by-maternal-treatments-with-a-mitochondrial-antioxidant
#8
Romina Higa, Sabrina L Roberti, Evangelina Capobianco, Daiana Fornes, Verónica White, Alicia Jawerbaum
Maternal diabetes programs metabolic and cardiovascular diseases in the offspring. Here, we demonstrated increased pro-oxidant/pro-inflammatory markers in the heart of 2-day-old offspring of diabetic rats, previous to the induction of metabolic alterations. At a pre-pubertal stage, sex-dependent changes were evidenced in the diabetic group, as only males showed increased glycemia as well as increased lipoperoxidation and concentrations of nitrated proteins, matrix metalloproteinase-9 and peroxisome proliferator activated receptor α (PPARα) in the heart...
June 22, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28646881/heme-molecule-functions-as-an-endogenous-agonist-of-astrocyte-tlr2-to-contribute-to-secondary-brain-damage-after-intracerebral-hemorrhage
#9
Hyunjung Min, Boomin Choi, Yong Ho Jang, Ik-Hyun Cho, Sung Joong Lee
Toll-like receptor 2 (TLR2) was recently shown to contribute to secondary brain damage after intracerebral hemorrhage (ICH), although the molecular mechanisms of this contribution are elusive. In this study, we tested the hypothesis that hemin functions as a TLR2 endogenous agonist, causing proinflammatory astrocyte activation and secondary brain damage after ICH. Hemin administration to the mouse brain striatum induced ICH injury and neurological deficits, however, the brain injury volume and neurological deficits due to hemin injection were significantly reduced in TLR2 knock-out (KO) mice...
June 24, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28646455/human-nucleus-pulposus-intervertebral-disc-cells-becoming-senescent-using-different-treatments-exhibit-a-similar-transcriptional-profile-of-catabolic-and-inflammatory-genes
#10
Sotiris-Spyros Vamvakas, Eleni Mavrogonatou, Dimitris Kletsas
PURPOSE: Chronic low back pain has been associated with intervertebral disc (IVD) degeneration, which is characterized by the accumulation of extracellular matrix (ECM)-degrading proteases and inflammatory molecules in the degenerate tissue. IVD degeneration could be the outcome of natural organismal ageing and/or of the exposure of the disc to cumulative stressful environmental stimuli and is accompanied by an increased population of senescent cells in the tissue. On the other hand, senescent cells are known to secrete proteolytic enzymes and inflammatory molecules, which can contribute to ECM catabolism...
June 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28646265/omega-3-and-omega-6-fatty-acids-act-as-inhibitors-of-the-matrix-metalloproteinase-2-and-matrix-metalloproteinase-9-activity
#11
Eleonora Nicolai, Federica Sinibaldi, Gianpaolo Sannino, Giuseppina Laganà, Francesco Basoli, Silvia Licoccia, Paola Cozza, Roberto Santucci, Maria Cristina Piro
Polyunsaturated fatty acids have been reported to play a protective role in a wide range of diseases characterized by an increased metalloproteinases (MMPs) activity. The recent finding that omega-3 and omega-6 fatty acids exert an anti-inflammatory effect in periodontal diseases has stimulated the present study, designed to determine whether such properties derive from a direct inhibitory action of these compounds on the activity of MMPs. To this issue, we investigated the effect exerted by omega-3 and omega-6 fatty acids on the activity of MMP-2 and MMP-9, two enzymes that actively participate to the destruction of the organic matrix of dentin following demineralization operated by bacteria acids...
June 23, 2017: Protein Journal
https://www.readbyqxmd.com/read/28645880/biomarkers-of-airway-and-systemic-inflammation-in-obese-asthmatic-paediatric-patients
#12
H T Nacaroglu, O B Gayret, M Erol, O Buke, O Zengi, M Tasdemir, Z Tasdemir, O Yigit
BACKGROUND: It is thought that airway inflammation is more common in obese asthmatic patients because inflammation is harder to control and does not respond well to glucocorticoid treatment. OBJECTIVE: This study's aim was to investigate the effect of obesity on airway and systemic inflammation in children with asthma and to identify the biomarkers that play a role in this inflammation. METHODS: The study included patients aged 6-16 years who were diagnosed with asthma in the paediatric allergy outpatient clinic of Bagcilar Training and Research Hospital in Turkey...
June 20, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28644965/3-4-dihydroxybenzalacetone-attenuates-lipopolysaccharide-induced-inflammation-in-acute-lung-injury-via-down-regulation-of-mmp-2-and-mmp-9-activities-through-suppressing-ros-mediated-mapk-and-pi3k-akt-signaling-pathways
#13
Wei Chao, Jeng-Shyan Deng, Shyh-Shyun Huang, Pei-Ying Li, Yu-Chia Liang, Guan-Jhong Huang
3, 4-Dihydroxybenzalacetone (DBL) is a constituent of Phellinus linteus. This study demonstrated the protective effect of DBL on lipopolysaccharide (LPS)-induced acute lung injuries in mice. Pretreatment with DBL significantly improved LPS-induced histological alterations in lung tissues. In addition, DBL markedly reduced the total cell number, the leukocytes, the protein concentrations, and decreased the release of nitrite, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6 and the activities of matrix metalloproteinase (MMP)-2 and -9 in the bronchoalveolar lavage fluid...
June 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28644870/effects-of-nicotine-on-corneal-wound-healing-following-acute-alkali-burn
#14
Jong Won Kim, Chae Woong Lim, Bumseok Kim
Epidemiological studies have indicated that smoking is a pivotal risk factor for the progression of several chronic diseases. Nicotine, the addictive component of cigarettes, has powerful pathophysiological properties in the body. Although the effects of cigarette smoking on corneal re-epithelialization have been studied, the effects of nicotine on corneal wound healing-related neovascularization and fibrosis have not been fully demonstrated. The aim of this study was to evaluate the effects of chronic administration of nicotine on corneal wound healing following acute insult induced by an alkali burn...
2017: PloS One
https://www.readbyqxmd.com/read/28644426/the-association-between-the-serum-levels-of-matrix-metalloproteinase-9-and-colorectal-cancer
#15
Ismar Rašić, Azra Rašić, Goran Akšamija, Svjetlana Radović, Nedžad Šehović
Aim To determine the serum levels of matrix metalloproteinase 9 (MMP-9) concentration and their association with the stage and histopathologic sizes of colorectal cancer (CRC). Methods One hundred and two patients with clinically diagnosed and histologically confirmed colorectal cancer ready for surgical treatment were included in the study. In each patient, preoperative peripheral venous blood samples were taken for determination of the concentration of MMP-9 using ELISA immunoassay test. Resected tumour specimens were studied pathologically according to the criteria of the TNM classification...
August 1, 2017: Medicinski Glasnik
https://www.readbyqxmd.com/read/28642677/a-novel-workflow-combining-plaque-imaging-plaque-and-plasma-proteomics-identifies-biomarkers-of-human-coronary-atherosclerotic-plaque-disruption
#16
Regent Lee, Roman Fischer, Philip D Charles, David Adlam, Alessandro Valli, Katalin Di Gleria, Rajesh K Kharbanda, Robin P Choudhury, Charalambos Antoniades, Benedikt M Kessler, Keith M Channon
BACKGROUND: Atherosclerotic plaque rupture is the culprit event which underpins most acute vascular syndromes such as acute myocardial infarction. Novel biomarkers of plaque rupture could improve biological understanding and clinical management of patients presenting with possible acute vascular syndromes but such biomarker(s) remain elusive. Investigation of biomarkers in the context of de novo plaque rupture in humans is confounded by the inability to attribute the plaque rupture as the source of biomarker release, as plaque ruptures are typically associated with prompt down-stream events of myocardial necrosis and systemic inflammation...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28639502/rituximab-as-first-line-treatment-for-acquired-thrombotic-thrombocytopenic-purpura
#17
Haifei Chen, Ailin Fu, Jing Wang, Tianqin Wu, Zhengyang Li, Jieqing Tang, Hongshi Shen, Jingjing Zhu, Jie Li, Qian Zhu, Longmei Qing
Objective To investigate the efficacy and safety of rituximab (RTX) as first-line treatment of acquired thrombotic thrombocytopenic purpura (aTTP). Methods Twenty-five patients with acute aTTP and/or severe a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13 (ADAMTS13) deficiency were admitted to our centre from April 2009 to March 2015. Fourteen patients received RTX plus standard therapy (plasma exchange and corticosteroids) at acute episodes. Haemoglobin, platelet count, schistocytes, lactate dehydrogenase levels, ADAMTS13 activity and its inhibitors, and the ratio of B lymphocytes in the peripheral blood, were monitored...
June 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28639050/paeoniflorin-suppressed-high-glucose-induced-retinal-microglia-mmp-9-expression-and-inflammatory-response-via-inhibition-of-tlr4-nf-%C3%AE%C2%BAb-pathway-through-upregulation-of-socs3-in-diabetic-retinopathy
#18
Su-Hua Zhu, Bing-Qian Liu, Mao-Juan Hao, Yi-Xin Fan, Cheng Qian, Peng Teng, Xiao-Wei Zhou, Liang Hu, Wen-Tao Liu, Zhi-Lan Yuan, Qing-Ping Li
Diabetic retinopathy (DR) is a serious-threatening complication of diabetes and urgently needed to be treated. Evidence has accumulated indicating that microglia inflammation within the retina plays a critical role in DR. Microglial matrix metalloproteinase 9 (MMP-9) has an important role in the destruction of the integrity of the blood-retinal barrier (BRB) associated with the development of DR. MMP-9 was also considered important for regulating inflammatory responses. Paeoniflorin, a monoterpene glucoside, has a potent immunomodulatory effect on microglia...
June 21, 2017: Inflammation
https://www.readbyqxmd.com/read/28638268/klf6-inhibited-oral-cancer-migration-and-invasion-via-downregulation-of-mesenchymal-markers-and-inhibition-of-mmp-9-activities
#19
Li-Sung Hsu, Ren-Hung Huang, Hung-Wen Lai, Hui-Ting Hsu, Wen-Wei Sung, Ming-Ju Hsieh, Chong-Yu Wu, Yueh-Min Lin, Mu-Kuan Chen, Yu-Sheng Lo, Chih-Jung Chen
Krüppel-like factors can bind to specific DNA motifs and regulate various cellular functions, such as metabolism, cell proliferation, and differentiation. Krüppel-like factor 6 (KLF6), a member of this family, is downregulated in human cancers. Oral cancer is a highly prevalent type in Taiwan. Although KLF6 overexpression in human cancer cells inhibits cell proliferation, induces apoptosis, and attenuates cell migration, the effects of KLF6 on oral cancer remains poorly elucidated. This study investigated the role of KLF6 in oral cancer tumorigenesis...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28636071/the-role-of-homocysteine-in-seminal-vesicles-remodeling-in-rat
#20
Adel Ghoul, Elara Moudilou, Mohamed El Hadi Cherifi, Fouzia Zerrouk, Billel Chaouad, Anissa Moulahoum, Souhila Aouichat-Bouguerra, Khira Othmani, Jean-Marie Exbrayat, Yasmina Benazzoug
INTRODUCTION: Elevated plasma homocysteine (Hcy) levels have been associated with several tissue injuries including heart and liver fibrosis. In these diseases, hyperhomocysteinemia (Hhcy) plays a major role in modulating the alteration of the balance between matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMPs), leading to the pathological accumulation of extracellular matrix (ECM) proteins. Since the effect of Hhcy on ECM of seminal vesicle was not studied, the aim of our research was to check if Hcy can induce a remodeling within seminal vesicles ECM...
June 21, 2017: Folia Histochemica et Cytobiologica
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