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https://www.readbyqxmd.com/read/28211204/evaluation-of-the-enhanced-permeability-and-retention-effect-in-the-early-stages-of-lymph-node-metastasis
#1
Mamoru Mikada, Ariunbuyan Sukhbaatar, Yoshinobu Miura, Sachiko Horie, Maya Sakamoto, Shiro Mori, Tetsuya Kodama
Most solid cancers spread to new sites via the lymphatics before hematogenous dissemination. However, only a small fraction of an intravenously administered anti-cancer drug enters the lymphatic system to reach metastatic lymph nodes (LNs). Here, we show that the enhanced permeability and retention (EPR) effect is not induced during the early stages of LN metastasis. Luciferase-expressing tumor cells were injected into the subiliac LN of the MXH10/Mo-lpr/lpr mouse to induce metastasis to the proper axillary LN (PALN)...
February 17, 2017: Cancer Science
https://www.readbyqxmd.com/read/28209562/vinexin-%C3%AE-ablation-inhibits-atherosclerosis-in-apolipoprotein-e-deficient-mice-by-inactivating-the-akt-nuclear-factor-%C3%AE%C2%BAb-inflammatory-axis
#2
Hongjing Guan, Wen-Lin Cheng, Junhong Guo, Meng-Lin Chao, Yan Zhang, Jun Gong, Xue-Yong Zhu, Zhi-Gang She, Zan Huang, Hongliang Li
BACKGROUND: Vinexin β is a novel adaptor protein that regulates cellular adhesion, cytoskeletal reorganization, signal transduction, and transcription; however, the exact role that vinexin β plays in atherosclerosis remains unknown. METHODS AND RESULTS: Immunoblot analysis showed that vinexin β expression is upregulated in the atherosclerotic lesions of both patients with coronary heart disease and hyperlipemic apolipoprotein E-deficient mice and is primarily localized in macrophages indicated by immunofluorescence staining...
February 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28209519/effect-of-crocetin-on-vascular-smooth-muscle-cells-migration-induced-by-advanced-glycosylation-end-products
#3
REVIEW
Min Xiang, Runlin Yang, Yaqin Zhang, Pingping Wu, Lizhen Wang, Zhenyu Gao, Jianmei Wang
Crocetin is a major active constituent of Gardenia jasminoides J. Ellis, and can aid in the prevention of cardiovascular disease. The effect and possible mechanism of crocetin on the migration of vascular smooth muscle cells (VSMCs) induced by advanced glycosylation end products (AGEs) were investigated. VSMCs were pre-incubated with or without crocetin and exposed to AGEs subsequently. The invasion of the cells was investigated using a 24-well Cell Invasion Chamber. The anti-proliferative activity of crocetin was evaluated by MTT assay and VSMCs cell-cycle distribution was examined by flow cytometry...
February 13, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28193524/synthetic-peptide-ala-arg-glu-gly-glu-met-abolishes-pro-proliferative-and-anti-apoptotic-effects-of-high-glucose-in-vascular-smooth-muscle-cells
#4
Xiaozhou Cao, Yi Lyu, Junyu Ning, Xiaozhi Tang, Xinchun Shen
Apoptosis plays a critical role in normal vascular development and atherosclerosis. However, high glucose has been reported to generate a certain level of ROS that can inhibit vascular smooth muscle cell (VSMC) apoptosis, with the underlying mechanism remaining unclear. In this study, a synthetic peptide AREGEM (Ala-Arg-Glu-Gly-Glu-Met) exhibited antioxidative effects and was used to investigate its function in VSMCs during hyperglycaemia. MTT assay results demonstrated that AREGEM significantly attenuated high glucose-induced VSMCs proliferation...
February 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28192121/convulxin-a-c-type-lectin-like-protein-inhibits-hcasmcs-functions-via-wad-motif-integrin-%C3%AE-v-interaction-and-nf-%C3%AE%C2%BAb-independent-gene-suppression-of-gro-and-il-8
#5
Chun-Ho Shih, Tin-Bin Chiang, Wen-Jeng Wang
Convulxin (CVX), a C-type lectin-like protein (CLPs), is a potent platelet aggregation inducer. To evaluate its potential applications in angiogenic diseases, the multimeric CVX were further explored on its mode of actions toward human coronary artery smooth muscle cells (HCASMCs). The N-terminus of β-chain of CVX (CVX-β) contains a putative disintegrin-like domain with a conserved motif upon the sequence comparison with other CLPs. Importantly, native CVX had no cytotoxic activity as examined by electrophoretic pattern...
February 10, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28189040/an-anti-%C3%AE-v%C3%AE-3-antibody-inhibits-coronary-artery-atherosclerosis-in-diabetic-pigs
#6
L A Maile, W H Busby, G Xi, K P Gollahan, W Flowers, N Gafbacik, S Gafbacik, K Stewart, E P Merricks, T C Nichols, D A Bellinger, D R Clemmons
BACKGROUND AND AIMS: Diabetes is a major risk factor for the development of atherosclerosis. Hyperglycemia stimulates vascular smooth muscle cells (VSMC) to secrete ligands that bind to the αVβ3 integrin, a receptor that regulates VSMC proliferation and migration. This study determined whether an antibody that had previously been shown to block αVβ3 activation and to inhibit VSMC proliferation and migration in vitro, inhibited the development of atherosclerosis in diabetic pigs. METHODS: Twenty diabetic pigs were maintained on a high fat diet for 22 weeks...
January 27, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28187396/methyl-orvinol-dual-activity-opioid-receptor-ligand-inhibits-gastrointestinal-transit-and-alleviates-abdominal-pain-in-the-mouse-models-mimicking-diarrhea-predominant-irritable-bowel-syndrome
#7
Marta Zielińska, Agata Jarmuż, Andrzej Wasilewski, Gerta Cami-Kobeci, Stephen Husbands, Jakub Fichna
BACKGROUND: Diarrhea-predominant irritable bowel syndrome (IBS-D) is a functional disorder of the gastrointestinal (GI) tract. The major IBS-D symptoms include diarrhea, abdominal pain and discomfort. High density of opioid receptors (ORs) in the GI tract and their participation in the maintenance of GI homeostasis make ORs ligands an attractive option for developing new anti-IBS-D treatments. The aim of this study was to characterize the effect of methyl-orvinol on the GI motility and secretion and in mouse models mimicking symptoms of IBS-D...
December 5, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28185804/7-cyclopentyl-5-4-phenoxyphenyl-7h-pyrrolo-2-3-d-pyrimidin-4-ylamine-inhibits-the-proliferation-and-migration-of-vascular-smooth-muscle-cells-by-suppressing-erk-and-akt-pathways
#8
Hyang-Hee Seo, Sang Woo Kim, Chang Youn Lee, Kyu Hee Lim, Jiyun Lee, Soyeon Lim, Seahyoung Lee, Ki-Chul Hwang
Excessive vascular smooth muscle cell (VSMC) proliferation and migration after vascular injury significantly contributes to the development of occlusive vascular disease. Therefore, inhibiting the proliferation and migration of VSMCs is a validated therapeutic modality for occlusive vascular disease such as atherosclerosis and restenosis. In the present study, we screened chemical compounds for their anti-proliferative effects on VSMCs using multiple approaches, such as MTT assays, wound healing assays, and trans-well migration assays...
February 6, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28177667/ursolic-acid-suppresses-leptin-induced-cell-proliferation-in-rat-vascular-smooth-muscle-cells
#9
Ya-Mei Yu, Chiang-Chin Tsai, Yu-Wen Tzeng, Weng-Cheng Chang, Su-Yin Chiang, Ming-Fen Lee
Accumulating lines of evidence indicate that high leptin levels are associated with adverse cardiovascular health in obese individuals. Proatherogenic effects of leptin include endothelial cell activation, vascular smooth muscle cell proliferation and migration. Ursolic acid (UA) has been reported to exhibit multiple biological effects including antioxidant and anti-inflammatory properties. In this study, we investigated the effect of UA on leptin-induced biological responses in rat vascular smooth muscle cells (VSMCs)...
January 29, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28176948/theophylline-action-on-primary-human-bronchial-epithelial-cells-under-proinflammatory-stimuli-and-steroidal-drugs-a-therapeutic-rationale-approach
#10
Luca Gallelli, Daniela Falcone, Roberto Cannataro, Mariarita Perri, Raffaele Serra, Girolamo Pelaia, Rosario Maselli, Rocco Savino, Giuseppe Spaziano, Bruno D'Agostino
Theophylline is a natural compound present in tea. Because of its property to relax smooth muscle it is used in pharmacology for the treatment of airway diseases (ie, chronic obstructive pulmonary disease, asthma). However, this effect on smooth muscle is dose dependent and it is related to the development of side effects. Recently, an increasing body of evidence suggests that theophylline, at low concentrations, also has anti-inflammatory effects related to the activation of histone deacetylases. In this study, we evaluated the effects of theophylline alone and in combination with corticosteroids on human bronchial epithelial cells under inflammatory stimuli...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28173812/anthocyanins-encapsulated-by-plga-peg-nanoparticles-potentially-improved-its-free-radical-scavenging-capabilities-via-p38-jnk-pathway-against-a%C3%AE-1-42-induced-oxidative-stress
#11
Faiz Ul Amin, Shahid Ali Shah, Haroon Badshah, Mehtab Khan, Myeong Ok Kim
BACKGROUND: In order to increase the bioavailability of hydrophilic unstable drugs like anthocyanins, we employed a polymer-based nanoparticles approach due to its unique properties such as high stability, improved bioavailability and high water-soluble drug loading efficiency. Anthocyanins constitute a subfamily of flavonoids that possess anti-oxidative, anti-inflammatory and neuroprotective properties. However, anthocyanins are unstable because their phenolic hydroxyl groups are easily oxidized into quinones, causing a reduced biological activity...
February 7, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28166932/hyaluronan-mediates-the-adhesion-of-porcine-peripheral-blood-mononuclear-cells-to-poly-i-c-treated-intestinal-cells-and-modulates-their-cytokine-production
#12
María José Docampo, Jennifer Cabrera, Anna Bassols
Hyaluronan (HA), a major component of the extracellular matrix (ECM), has been increasingly recognized as a regulator of inflammation. Its role is complex since it has pro- and anti-inflammatory actions by modulating the expression of inflammatory genes, the recruitment of inflammatory cells and the production of inflammatory cytokines, but also by attenuating the course of inflammation and providing protection against tissue damage. Certain viruses and other inflammatory stimuli induce organization of HA into cable-like structures, which may be responsible for leukocyte recruitment and, on the other hand, low molecular weight fragments of HA have been shown to activate various inflammatory responses...
February 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28165488/restenosis-inhibition-and-re-differentiation-of-tgf%C3%AE-smad3-activated-smooth-muscle-cells-by-resveratrol
#13
Yichen Zhu, Toshio Takayama, Bowen Wang, Alycia Kent, Mengxue Zhang, Bernard Y K Binder, Go Urabe, Yatao Shi, Daniel DiRenzo, Shakti A Goel, Yifan Zhou, Christopher Little, Drew A Roenneburg, Xu Dong Shi, Lingjun Li, William L Murphy, K Craig Kent, Jianjuan Ke, Lian-Wang Guo
To date, there is no periadventitial drug delivery method available in the clinic to prevent restenotic failure of open vascular reconstructions. Resveratrol is a promising anti-restenotic natural drug but subject to low bioavailability when systemically administered. In order to reconcile these two prominent issues, we tested effects of periadventitial delivery of resveratrol on all three major pro-restenotic pathologies including intimal hyperplasia (IH), endothelium impairment, and vessel shrinkage. In a rat carotid injury model, periadventitial delivery of resveratrol either via Pluronic gel (2-week), or polymer sheath (3-month), effectively reduced IH without causing endothelium impairment and vessel shrinkage...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28165420/behavior-of-gingival-fibroblasts-on-titanium-implant-surfaces-in-combination-with-either-injectable-prf-or-prp
#14
Xuzhu Wang, Yufeng Zhang, Joseph Choukroun, Shahram Ghanaati, Richard J Miron
Various strategies have been employed to speed tissue regeneration using bioactive molecules. Interestingly, platelet concentrates derived from a patient's own blood have been utilized as a regenerative strategy in recent years. In the present study, a novel liquid platelet formulation prepared without the use of anti-coagulants (injectable-platelet-rich fibrin, i-PRF) was compared to standard platelet-rich plasma (PRP) with gingival fibroblasts cultured on smooth and roughened titanium implant surfaces. Standard PRP and i-PRF (centrifuged at 700 rpm (60× g) for 3 min) were compared by assays for fibroblast biocompatibility, migration, adhesion, proliferation, as well as expression of platelet-derived growth factor (PDGF), transforming growth factor-β (TGF-β), collagen1 (COL1) and fibronectin (FN)...
February 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28163029/airway-hyperresponsiveness-in-asthma-measurement-and-clinical-relevance
#15
REVIEW
Parameswaran Nair, James G Martin, Donald C Cockcroft, Myrna Dolovich, Catherine Lemiere, Louis-Philippe Boulet, Paul M O'Byrne
Airway hyperresponsiveness is a characteristic feature of asthma, and its measurement is an important tool in its diagnosis. With a few caveats, methacholine bronchial provocation by a 2-minute tidal breathing method is highly sensitive; a negative test result (PC20 > 16 mg/mL, PD20 > 400 μg) rules out current asthma with reasonable certainty. A PC20 value of less than 1 mg/mL/PD20 value of less than 25 μg is highly specific (ie, diagnostic) but quite insensitive for asthma. For accurate interpretation of the test results, it is important to control and standardize technical factors that have an impact on nebulizer performance...
February 2, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28150521/drug-repurposing-and-therapeutic-anti-microrna-predictions-for-inhibition-of-oxidized-low-density-lipoprotein-induced-vascular-smooth-muscle-cell-associated-diseases
#16
Shun-Tsung Chen, Chien-Hung Huang, Victor C Kok, Chi-Ying F Huang, Jin-Shuei Ciou, Jeffrey J P Tsai, Nilubon Kurubanjerdjit, Ka-Lok Ng
Drug repurposing is a new method for disease treatments, which accelerates the identification of new uses for existing drugs with minimal side effects for patients. MicroRNA-based therapeutics are a class of drugs that have been used in gene therapy following the FDA's approval of the first anti-sense therapy. This study examines the effects of oxLDL on vascular smooth muscle cells (VSMCs) and identifies potential drugs and antimiRs for treating VSMC-associated diseases. The Connectivity Map (cMap) database is utilized to identify potential new uses of existing drugs...
December 22, 2016: Journal of Bioinformatics and Computational Biology
https://www.readbyqxmd.com/read/28148565/pirfenidone-exerts-antifibrotic-effects-through-inhibition-of-gli-transcription-factors
#17
Miroslava Didiasova, Rajeev Singh, Jochen Wilhelm, Grazyna Kwapiszewska, Lukasz Wujak, Dariusz Zakrzewicz, Liliana Schaefer, Philipp Markart, Werner Seeger, Matthias Lauth, Malgorzata Wygrecka
Pirfenidone is an antifibrotic drug, recently approved for the treatment of patients suffering from idiopathic pulmonary fibrosis (IPF). Although pirfenidone exhibits anti-inflammatory, antioxidant, and antifibrotic properties, the molecular mechanism underlying its protective effects remains unknown. Here, we link pirfenidone action with the regulation of the profibrotic hedgehog (Hh) signaling pathway. We demonstrate that pirfenidone selectively destabilizes the glioma-associated oncogene homolog (GLI)2 protein, the primary activator of Hh-mediated gene transcription...
February 1, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28144138/in-vitro-determination-of-the-efficacy-of-scorpion-venoms-as-anti-cancer-agents-against-colorectal-cancer-cells-a-nano-liposomal-delivery-approach
#18
Abdulrahman K Al-Asmari, Zabih Ullah, Ali Al Balowi, Mozaffarul Islam
The use of liposomes in biological and medicinal sciences is a relatively new approach. The liposomal strategy greatly depends on the technological advancement in the formation of vesicles of various sizes and properties. In the current study, we encapsulated the venoms obtained from medically important scorpions such as Androctonus bicolor (AB), Androctonus crassicauda (AC), and Leiurus quinquestriatus (LQ). To begin with, our first and foremost aim was to prepare biocompatible and biodegradable nanovesicles...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28138219/resveratrol-inhibits-transforming-growth-factor-%C3%AE-2-induced-epithelial-to-mesenchymal-transition-in-human-retinal-pigment-epithelial-cells-by-suppressing-the-smad-pathway
#19
Ching-Long Chen, Yi-Hao Chen, Ming-Cheng Tai, Chang-Min Liang, Da-Wen Lu, Jiann-Torng Chen
Proliferative vitreoretinopathy (PVR) is the main cause of failure following retinal detachment surgery. Transforming growth factor (TGF)-β2-induced epithelial-to-mesenchymal transition (EMT) plays an important role in the development of PVR, and EMT inhibition decreases collagen gel contraction and fibrotic membrane formation, resulting in prevention of PVR. Resveratrol is naturally found in red wine and has inhibitory effects on EMT. Resveratrol is widely used in cardioprotection, neuroprotection, chemotherapy, and antiaging therapy...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28138042/control-of-neurotransmission-by-nav1-7-in-human-guinea-pig-and-mouse-airway-parasympathetic-nerves
#20
Michaela Kocmalova, Marian Kollarik, Brendan J Canning, Fei Ru, Robert A Herbstromer, Sonya Meeker, Silvia Fonquerna, Monica Aparici, Montserrat Miralpeix, Xian Chi, Baolin Li, Ben Wilenkin, Jeff McDermott, Eric Nisenbaum, Jeff Krajewski, Bradley J Undem
Little is known about the voltage-gated sodium channels (NaVs) that control neurotransmission in the parasympathetic nervous system. We evaluated the expression of the α subunits of each of the nine NaVs in human, guinea pig, and mouse airway parasympathetic ganglia. We combined this information with a pharmacological analysis of selective NaV blockers on parasympathetic contractions of isolated airway smooth muscle. As would be expected from previous studies, tetrodotoxin potently blocked the parasympathetic responses in the airways of each species...
January 30, 2017: Journal of Pharmacology and Experimental Therapeutics
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