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MMP-2, MMP-9

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https://www.readbyqxmd.com/read/27920521/celastrol-nanomicelles-attenuate-cytokine-secretion-in-macrophages-and-inhibit-macrophage-induced-corneal-neovascularization-in-rats
#1
Zhanrong Li, Jingguo Li, Lei Zhu, Ying Zhang, Junjie Zhang, Lin Yao, Dan Liang, Liya Wang
The aim of the present study was to investigate the inhibitory effects of celastrol-loaded nanomicelles (CNMs) on activated macrophage-induced corneal neovascularization (CNV) in rats and cytokine secretion in macrophages. Using an angiogenesis assay in vitro, we detected the effects of CNMs on human umbilical vein endothelial cell (HUVEC) migration and invasion. In addition, the expression levels of cytokines secreted from hypoxia-induced macrophages were assessed through cytokine array analysis. The expression of hypoxia-inducible factors-1α (HIF-1α), nuclear factor-kappa B p65 (NF-κB p65), phospho-nuclear factor-kappa B p65 (phospho-NF-κB p65), p38 mitogen-activated protein kinase (p38 MAPK), phospho-p38 MAPK, extracellular signal-regulated kinase 1/2 (ERK1/2), and phospho-ERK1/2 was analyzed by western blotting...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920494/presence-or-absence-of-ocular-surface-inflammation-directs-clinical-and-therapeutic-management-of-dry-eye
#2
Robert Sambursky
BACKGROUND: The presence of clinically significant inflammation has been confirmed in the tears of 40%-65% of patients with symptoms of dry eye. Ocular surface inflammation may lead to tear film instability, epithelial cell irregularities, and permeability, resulting in chronic symptomatic pain and fluctuating vision as well as negative surgical outcomes. PATIENTS AND METHODS: A retrospective single center medical chart review of 100 patients was conducted. All patients were tested with the InflammaDry test to determine if patients exhibited elevated levels of matrix metalloproteinase 9 (MMP-9)...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27920206/activation-of-d2-dopamine-receptors-in-cd133-ve-cancer-stem-cells-in-non-small-cell-lung-carcinoma-inhibits-proliferation-clonogenic-ability-and-invasiveness-of-these-cells
#3
Soumyabrata Roy, Kai Lu, Mukti Kant Nayak, Avishek Bhuniya, Tithi Ghosh, Suman Kundu, Sarbari Ghosh, Rathindranath Baral, Partha Sarathi Dasgupta, Sujit Basu
Lung carcinoma is the leading cause of cancer-related death worldwide, and among this cancer, non-small cell lung carcinoma (NSCLC) comprises the majority of cases. Furthermore, recurrence and metastasis of NSCLC correlate well with CD133+ve tumor cells, a small population of tumor cells, which has been designated as cancer stem cells (CSC). We here for the first time have demonstrated high expression of D2 dopamine (DA) receptors in CD133+ve adenocarcinoma NSCLC cells. Also, activation of D2 DA receptors in these cells significantly inhibited their proliferation, clonogenic ability and invasiveness by suppressing extracellular-signal-regulated kinases 1/2 (ERK1/2) and AKT, downregulation of octamer-binding transcription factor 4 (Oct-4) expression and matrix metalloproteinase-9 (MMP-9) secretion by these cells...
December 5, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27920147/accumbens-nnos-interneurons-regulate-cocaine-relapse
#4
Alexander C W Smith, Michael D Scofield, Jasper A Heinsbroek, Cassandra D Gipson, Daniela Neuhofer, Doug J Roberts-Wolfe, Sade Spencer, Neringa M Stankeviciute, Rachel Smith, Nicholas P Allen, Melissa R Lorang, William C Griffin, Heather A Boger, Peter W Kalivas
: Relapse to drug use can be initiated by drug-associated cues. The intensity of cue-induced relapse is correlated with the induction of transient synaptic potentiation (t-SP) at glutamatergic synapses on medium spiny neurons (MSNs) in the nucleus accumbens core (NAcore), and requires spillover of glutamate from prefrontal cortical afferents. We used a rodent self-administration/reinstatement model of relapse to show that cue-induced t-SP and reinstated cocaine-seeking result from glutamate spillover initiating a metabotropic glutamate receptor 5 (mGluR5)-dependent increase in nitric oxide (NO) production...
December 5, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27919591/clonorchis-sinensis-excretory-secretory-products-regulate-migration-and-invasion-in-cholangiocarcinoma-cells-via-extracellular-signal-regulated-kinase-1-2-nuclear-factor-%C3%AE%C2%BAb-dependent-matrix-metalloproteinase-9-expression
#5
Jhang Ho Pak, Jimin Shin, In-Sung Song, Sungbo Shim, Sung-Wuk Jang
Matrix metalloproteinase-9 (MMP-9) plays an important role in the invasion and metastasis of various types of cancer cells. We have previously reported that excretory-secretory products (ESPs) from Clonorchis sinensis increases MMP-9 expression. However, the regulatory mechanisms through which MMP-9 expression affects cholangiocarcinoma development remain unclear. In the current study, we examined the potential role of ESPs in regulating the migration and invasion of various cholangiocarcinoma cell lines. We demonstrated that ESPs significantly induced MMP-9 expression and activity in a concentration-dependent manner...
December 2, 2016: International Journal for Parasitology
https://www.readbyqxmd.com/read/27917384/genetic-alterations-in-intervertebral-disc-disease
#6
REVIEW
Nikolay L Martirosyan, Arpan A Patel, Alessandro Carotenuto, M Yashar S Kalani, Evgenii Belykh, Corey T Walker, Mark C Preul, Nicholas Theodore
BACKGROUND: Intervertebral disc degeneration (IVDD) is considered a multifactorial disease that is influenced by both environmental and genetic factors. The last two decades of research strongly demonstrate that genetic factors contribute about 75% of the IVDD etiology. Recent total genome sequencing studies have shed light on the various single-nucleotide polymorphisms (SNPs) that are associated with IVDD. AIM: This review presents comprehensive and updated information about the diversity of genetic factors in the inflammatory, degradative, homeostatic, and structural systems involved in the IVDD...
2016: Frontiers in Surgery
https://www.readbyqxmd.com/read/27916896/the-impact-of-cxcr4-blockade-on-the-survival-of-rat-brain-cortical-neurons
#7
José Joaquín Merino, Alba Garcimartín, María Elvira López-Oliva, Juana Benedí, María Pilar González
BACKGROUND: Chemokine receptor type 4 (CXCR4) plays a role in neuronal survival/cell repair and also contributes to the progression of cancer and neurodegenerative diseases. Chemokine ligand 12 (CXCL12) binds to CXCR4. In this study, we have investigated whether CXCR4 blockade by AMD3100 (a CXCR4 antagonist, member of bicyclam family) may affect neuronal survival in the absence of insult. Thus, we have measured the mitochondrial membrane potential (MMP), Bax and Bcl-2 protein translocation, and cytochrome c release in AMD3100-treated brain cortical neurons at 7 DIV (days in vitro)...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27915985/congenital-muscular-dystrophy-1d-causes-matrix-metalloproteinase-activation-and-blood-brain-barrier-impairment
#8
Aryadnne L Schactae, Daphne Plamas, Monique Michels, Jaqueline S Generoso, Tatiana Barichello, Felipe Dal-Pizzol, Mariz Vainzof, Clarissa M Comim
Congenital Muscular Dystrophy type 1D (CMD1D) is characterized by an abnormal glycosylation of α-DG (α-dystroglycan) and associate to central nervous system (CNS) abnormalities such cognitive impairment. The purpose of the research were evaluate the blood-brain barrier permeability (BBB) permeability and matrix metalloproteinases (MMP) -2 and -9 in adult Largemyd-/- mice in order to understand the physiopathology of brain involvement during the CMD1D process. To this aim, we used adult homozygous Largemyd-/- (mutation in Large), heterozygous Largemyd+/- as well as wild-type (C57BL/6) mice...
December 1, 2016: Current Neurovascular Research
https://www.readbyqxmd.com/read/27914947/synthesis-and-binding-monitoring-of-a-new-nanomolar-pamam-based-matrix-metalloproteinases-inhibitor-mmpis
#9
Linda Cerofolini, Veronica Baldoneschi, Elisa Dragoni, Andrea Storai, Marianna Mamusa, Debora Berti, Marco Fragai, Barbara Richichi, Cristina Nativi
Dendrimers are efficient drug delivery systems particularly useful in ocular diseases. In particular, low generation PAMAM dendrimers are non-toxic and non-immunogenic and they provide an enhancement of the residence time of drugs in the eyes. In this context, the synthesis of the PAMAM-based matrix metalloproteinases inhibitor 5, is reported. In particular, we demonstrated that 5 strongly binds (18.0nM±2.5nM) MMP-9, the most relevant MMP responsible of ocular surface damages in induced dry eyes syndrome (DES)...
November 19, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27914878/hydroxytyrosol-modulates-the-levels-of-microrna-9-and-its-target-sirtuin-1-thereby-counteracting-oxidative-stress-induced-chondrocyte-death
#10
Stefania D'Adamo, Silvia Cetrullo, Serena Guidotti, Rosa Maria Borzì, Flavio Flamigni
OBJECTIVE: Nutraceutical compounds, such as hydroxytyrosol (HT), have been found to exert protective effects in osteoarthritis (OA) by affecting a variety of key molecular and cellular processes in chondrocytes. However, to our knowledge, no relationship has been reported between nutraceuticals and microRNA (miR) network in OA models. Here, we identified a miR that is implicated in hydroxytyrosol (HT)-mediated chondroprotection following oxidative stress condition by targeting sirtuin-1 (SIRT-1)...
November 30, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27914788/claudin-6-enhances-cell-invasiveness-through-claudin-1-in-ags-human-adenocarcinoma-gastric-cancer-cells
#11
A C Torres-Martínez, J F Gallardo-Vera, A N Lara-Holguin, L F Montaño, E P Rendón-Huerta
Claudins participate in tissue barrier function. The loss of this barrier is associated to metalloproteases-related extracellular matrix and basal membranes degradation. Claudin-1 is a pro-MMP-2 activator and claudin-6 transfected AGS (AGS-Cld6) cells are highly invasive. Our aim was to determine if claudin-6 was direct or indirectly associated with MMP-2 activation and cell invasiveness. Cytofluorometry, cell fractioning, immunoprecipitation, gelatin-zymography, cell migration and invasiveness assays were performed, claudin-2, -6, -7 and -9 transfected AGS cells, anti-MMP-2, -9 and -14, anti-claudins specific antibodies and claudin-1 small interfering RNA were used...
November 30, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27914256/the-effect-of-sambucus-nigra-l-extract-and-phytosinthesized-gold-nanoparticles-on-diabetic-rats
#12
Razvan Opris, Corina Tatomir, Diana Olteanu, Remus Moldovan, Bianca Moldovan, Luminita David, Andras Nagy, Nicoleta Decea, Mihai Ludovic Kiss, Gabriela Adriana Filip
Nanomaterials such as gold nanoparticles (NPs) conjugated with natural products have shown good results in lowering the glycated hemoglobin and have an anti-inflamatory effect. The aim of our study is to evaluate the antidiabetic effect of NPs functionalized with Sambucus nigra L. (SN) extract on experimental model of diabetes in rats. Diabetes was induced to 18 Wistar male rats (n=6) by a single intramuscular injection of streptozotocin (30mg/kg body weight - b.w.). SN extract (15mg/kg b.w.), NPs (0.3mg/kg b...
November 27, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27914007/evaluation-of-68-ga-labeled-peptide-tracer-for-detection-of-gelatinase-expression-after-myocardial-infarction-in-rat
#13
Max Kiugel, Ville Kytö, Tiina Saanijoki, Heidi Liljenbäck, Olli Metsälä, Mia Ståhle, Johanna Tuomela, Xiang-Guo Li, Pekka Saukko, Juhani Knuuti, Anne Roivainen, Antti Saraste
BACKGROUND: Matrix metalloproteinases 2 and 9 (MMP-2/9) play a role in extracellular matrix remodeling after an ischemic myocardial injury. We evaluated (68)Ga-DOTA-peptide targeting MMP-2/9 for the detection of gelatinase expression after myocardial infarction (MI) in rat. METHODS: Rats were injected with 43 ± 7.7 MBq of (68)Ga-DOTA-peptide targeting MMP-2/9 at 7 days (n = 7) or 4 weeks (n = 8) after permanent coronary ligation or sham operation (n = 5 at both time points) followed by positron emission tomography (PET)...
December 2, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27911281/polymorphisms-in-promoter-regions-of-mmp-3-and-il-6-genes-are-not-associated-to-adolescent-idiopathic-scoliosis-ais-gender-bias
#14
Wenyuan Sui, Junlin Yang, Zifang Huang, Qifei Wang, Hengwei Fan, Yaolong Deng
STUDY DESIGN: A retrospective study in Chinese Han people. PURPOSE: To explore whether promoter polymorphisms of matrix metalloproteinases-3 (MMP-3) (rs3025058) and interleukin-6(IL-6) (rs1800795) genes are associated to AIS gender bias. METHODS: A total of 200 patients (100 boys and 100 girls) with AIS and 200 healthy age-matched adolescents were recruited from July 2008 to August 2013 in our scoliosis center. All AIS patients had Cobb angles larger than 20°, average 43 ± 3...
November 25, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27910999/relationship-between-serum-cytokines-receptors-and-matrix-metalloproteinase-9-levels-and-coronary-artery-disease
#15
Seyed Reza Mirhafez, Amir Avan, Mohammad Tajfard, Shabnam Mohammadi, Mohsen Moohebati, Arash Fallah, Hamed Ghazavi, Hossein Savadi, Majid Ghayour Mobarhan
BACKGROUND: The prevalence of coronary artery disease (CAD) is increasing globally, supporting the need for the identification of novel biomarkers. Therefore in the present study, we have explored the association of SIL2A, SIL6R, STNFRI, STNFRII, and MMP9 in CAD patients. METHODS: Twenty one patients with angiographically defined CAD with more than 50% occlusion, at least, in one coronary artery and twenty healthy subjects (n=20) without the history of cardiovascular symptoms were enrolled...
December 2, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27910782/chemoprevention-of-colon-cancer-through-inhibition-of-angiogenesis-and-induction-of-apoptosis-by-nonsteroidal-anti-inflammatory-drugs
#16
Preety Ghanghas, Shelly Jain, Chandan Rana, Sankar Nath Sanyal
Cancer cells require nourishment for the growth of the primary tumor mass and spread of the metastatic colony. These needs are fulfilled by tumor-associated neovasculature known as angiogenesis, which also favors the transition from hyperplasia to neoplasia, that is, from a state of cellular multiplication to uncontrolled proliferation. Therefore, targeting angiogenesis is profitable as a mechanism to inhibit tumor growth. Furthermore, it is important to understand the cross-communication between vascular endothelial growth factor (VEGF) and matrix metalloproteinases (MMPs) in the neoplastic and proinflammatory milieu...
2016: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/27909812/in-phyllodes-tumors-of-the-breast-expression-of-sparc-osteonectin-bm40-mrna-by-in-situ-hybridization-correlates-with-protein-expression-by-immunohistochemistry-and-is-associated-with-tumor-progression
#17
Nah Ihm Kim, Ga-Eon Kim, Ji Shin Lee, Min Ho Park
Secreted protein acidic and rich in cysteine (SPARC) plays an essential role in tumor invasion and metastasis. The present work was undertaken to detect expression of SPARC mRNA in phyllodes tumors (PTs) and its association with SPARC protein expression. This study also evaluated expression of SPARC mRNA and its correlation between grade and clinical behavior of PTs. In addition, we assessed in PTs the association of expression of SPARC with that of matrix metalloproteinase (MMP)-2 and of MMP-9. SPARC mRNA expression was determined by RNAscope in situ hybridization (ISH) in 50 benign, 22 borderline, and 10 malignant PTs using a tissue microarray...
December 1, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27909732/early-vegf-inhibition-attenuates-blood-brain-barrier-disruption-in-ischemic-rat-brains-by-regulating-the-expression-of-mmps
#18
Hai-Tao Zhang, Ping Zhang, Yi Gao, Chen-Long Li, Hong-Jun Wang, Ling-Chao Chen, Yan Feng, Rui-Yan Li, Yong-Li Li, Chuan-Lu Jiang
Vascular endothelial growth factor (VEGF) inhibition has been demonstrated to be an effective strategy in preserving the integrity of the blood-brain barrier (BBB) in patients with acute ischemic stroke. Loss of the BBB is the key event associated with morbidity and mortality in these patients. However, the underlying mechanisms remain poorly understood. In the present study, the effects of VEGF inhibition and the possible mechanism that underlies acute cerebral ischemia in rats was investigated. Following the induction of transient middle cerebral artery occlusion for a 90‑min period, either an anti‑VEGF neutralizing antibody (RB‑222; 5 or 10 µg), or IgG (control), was administered by intracerebroventricular injection at 1 h following reperfusion...
November 29, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27908544/inhibition-of-cartilage-degradation-and-suppression-of-pge2-and-mmps-expression-by-pomegranate-fruit-extract-in-a-model-of-posttraumatic-osteoarthritis
#19
Nahid Akhtar, Nazir M Khan, Omer S Ashruf, Tariq M Haqqi
OBJECTIVE: Osteoarthritis (OA) is characterized by cartilage degradation in the affected joints. Pomegranate fruit extract (PFE) inhibits cartilage degradation in vitro. The aim of this study was to determine whether oral consumption of PFE inhibits disease progression in rabbits with surgically induced OA. METHODS: OA was surgically induced in the tibiofemoral joints of adult New Zealand White rabbits. In one group, animals were fed PFE in water for 8 wk postsurgery...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27904678/mir-221-promotes-growth-and-invasion-of-hepatocellular-carcinoma-cells-by-constitutive-activation-of-nf%C3%AE%C2%BAb
#20
Zimin Liu, Chenghong Wang, Xuelong Jiao, Shanna Zhao, Xudong Liu, Yun Wang, Jian Zhang
BACKGROUND AND OBJECTIVE: microRNAs (miRs) are small noncoding RNAs that modulate a variety of cellular processes by regulating multiple targets, which can promote or inhibit the development of malignant behaviors. Accumulating evidence suggests that microRNA-221 (miR-221) plays important roles in human carcinogenesis. It has recently found that miR-221 was overexpressed in hepatocellular carcinoma (HCC), and overexpression of miR-221 has a bad prognosis in these patients. Thus, down-regulation of miR-221 expression in HCC would provide new treatment approaches...
2016: American Journal of Translational Research
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