Search Results
Results 1 - 50 of 2218
1 2 3 4 5 6 7 8 9 10 >
Mursalimov Sergey S Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Prospekt Lavrentyeva 10, Novosibirsk, 630090, Russian - - 2014
Cytomixis is the migration of nuclei from one cell to another in higher plants, most frequently observable during microsporogenesis, which has a potential evolutionary significance. Currently, a major challenge is to label the chromatin migrating between cells to clarify its further fate. We have for the first time succeeded in ...
Bondì Maria - - 2014
BackgroundNanomedicine studies have showed a great potential for drug delivery into the lung. In this manuscript nanostructured lipid carriers (NLC) containing Fluticasone propionate (FP) were prepared and their biocompatibility and effects in a human bronchial epithelial cell line (16-HBE) stimulated with cigarette smoke extracts (CSE) were tested.ResultsBiocompatibility studies showed that ...
Dong Ping P State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Nanjing University Medical School, 22 Hankou Road, Nanjing, 210093, - - 2014
The aim of this study is to investigate protective effects of sesaminol on the human bronchial epithelial (BEAS-2B) cell line against oxidative damage of cigarette smoke extract (CSE). BEAS-2B cells were pre-incubated with sesaminol for 12 h and then treated with various concentrations of CSE for 24 h. After that proliferation ability, ...
Liu Min M Department of Life Science, Chinese Culture University, Taipei, Taiwan, Republic of China; Graduate Institute of Biotechnology, Chinese Culture University, Taipei, Taiwan, Republic of China. Electronic address: - - 2014
Lung cancer is one of the few human diseases for which the primary etiological agent, cigarette smoke (CS), has been described; however, the precise role of individual cigarette smoke toxicant in tumor development and progression remains to be elusive. The purpose of this study was to assess in vitro the ...
Ma Wen-Jiang WJ The First Affiliated Hospital of Medical College, Zhejiang University, Hangzhou 310009, - - 2014
In response to endothelial cell activation, arachidonic acid can be converted by cytochrome P450 (CYP) epoxygenases to epoxyeicosatrienoic acids (EETs), which have potent vasodilator and anti-inflammatory properties. In this study, we investigated the effects of exogenous EETs on cigarette smoke extract (CSE)-induced inflammation in human bronchial epithelial cells (NCI-H292). We ...
Crystal Ronald G RG Weill Cornell Medical College , 1300 York Avenue, Box96 , New York, New York, United States, 10065 ; - - 2014
The earliest abnormality in the lung associated with smoking is hyperplasia of airway basal cells, the stem/progenitor cells of the ciliated and secretory cells that are central to pulmonary host defense. Using cell biology and 'omics technologies to assess basal cells isolated from bronchoscopic brushings of nonsmokers, smokers and smokers ...
Chen Xiaoqi X Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, - - 2014
Extracellular alkalinization and H2O2 production are important early events during induced systemic resistance (ISR) establishment in plants. In a screen for metabolites as potential ISR activators from 98 fungal isolates associated with marine sponge Hymeniacidon perleve, the crude metabolites of fungus Eupenicillium brefeldianum HMP-F96 induced significant extracellular alkalinization coupled with ...
Takeuchi-Igarashi Hiroko H Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan, - - 2014
It is widely accepted that fibrosis is frequently observed in the gingiva of smokers. However, the mechanisms by which smoking results in pathological changes in periodontal tissue that lead to fibrosis are not entirely clear. Our former report showed that type I collagen synthesis was promoted by nicotine via CCN ...
Corrao Simona S Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, - - 2014
Heat-shock protein (Hsp)10 is the co-chaperone for Hsp60 inside mitochondria, but it also resides outside the organelle. Variations in its levels and intracellular distribution have been documented in pathological conditions, e.g. cancer and chronic obstructive pulmonary disease (COPD). Here, we show that Hsp10 in COPD undergoes changes at the molecular ...
Sobinoff A P AP Reproductive Science Group, School of Environmental & Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia Priority Research Centre for Chemical Biology, University of Newcastle, Callaghan, NSW 2308, - - 2014
What are the effects on fertility of cigarette smoke-induced toxicity on male offspring exposed during the gestational/weaning period? Maternal cigarette smoke exposure during the gestational/weaning period causes long-term defects in male offspring fertility. Cigarette smoke is a well-known reproductive toxicant which is particularly harmful to both fetal and neonatal germ ...
Li Tianjia T Department of Vascular surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dong Dan San Tiao, Beijing, 100005, - - 2014
An epidemiological survey has shown that smoking is closely related to atherosclerosis, in which excessive proliferation of vascular smooth muscle cells (SMCs) plays a key role. To investigate the mechanism underlying this unusual smoking-induced proliferation, cigarette smoke extract (CSE), prepared as smoke-bubbled phosphate-buffered saline (PBS), was used to imitate the ...
Huang R R Department of Oral Biology and Tobacco Cessation and Biobehavioral Group, School of Dentistry, Indiana University, Indianapolis State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, - - 2014
Streptococcus gordonii is a commensal species of human oral flora. It initiates dental biofilm formation and provides binding sites for later colonizers to attach to and generate mature biofilm. Smoking is the second highest risk factor for periodontal disease, and cigarette smoke extract has been reported to facilitate Porphyromonas gingivalis-S. ...
Lee Chia-Huei CH National Institute of Cancer Research, National Health Research Institutes, Zhunan, - - 2014
Chronic inflammation, coupled with alcohol, betel quid, and cigarette consumption, is associated with oral squamous cell carcinoma (OSCC). Interleukin-1 beta (IL-1β) is a critical mediator of chronic inflammation and implicated in many cancers. In this study, we showed that increased pro-IL-1β expression was associated with the severity of oral malignant ...
Milara Javier J 1Clinical Research Unit (UIC), University General Hospital Consortium , Valencia , - - 2014
Abstract Background: Cigarette smoking contributes to epithelial-mesenchymal transition (EMT) in COPD small bronchi as part of the lung remodeling process. We recently observed that roflumilast N-oxide (RNO), the active metabolite of the PDE4 inhibitor roflumilast, prevents cigarette smoke-induced EMT in differentiated human bronchial epithelial cells. Further, statins were shown to ...
Brauze Damian D Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479 Poznan, Poland. Electronic address: - - 2014
The aryl hydrocarbon receptor (AhR) mediates a variety of biological responses to ubiquitous environmental pollutants. In this study the effect of administration of β-naphthoflavone (BNF), potent AhR ligand, on the expression of AhR, AhRR, CYP1A1, CYP1A2, CYP1B1, NQO1, GSTA1, ALDH3A1 and UGT1A genes encoding the enzymes controlled by AhR were ...
Imamura K K Department of Periodontology, Tokyo Dental College, Tokyo, - - 2014
Epithelial cells are recognized as the first line of defense against bacterial infection and environmental harmful stimuli such as cigarette smoke (CS). Although previous studies explored the effects of nicotine on host cells, mechanisms by which CS affects cellular functions remain uncertain. The present study investigated the effects of CS ...
Zhuang Yuan Y Department of Microbiology and Biochemical Pharmacy, National Engineering Research Centre of Immunological Products, College of Pharmacy, Third Military Medical University, Chongqing, - - 2014
Helper T (Th) cell responses are critical for the pathogenesis of Helicobacter pylori-induced gastritis. Th22 cells represent a newly discovered Th cell subset, but their relevance to H. pylori-induced gastritis is unknown. Flow cytometry, real-time PCR and ELISA analyses were performed to examine cell, protein and transcript levels in gastric ...
Kawara Fumiaki F Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, - - 2014
Aims: To investigate the utility of ozone nanobubble water (NBW3) for the treatment of Helicobacter pylori in the stomach, we tested the influence of pepsin concentrations and pH levels on the disinfective activity of NBW3, and the cytotoxicity of NBW3 against mammalian cells and mucosa. Methods: Different concentrations of pepsin ...
Lee Inchul I Inchul Lee, Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, South - - 2014
Helicobacter pylori (H. pylori) gastritis may progress to high risk gastropathy and cancer. However, the pathological progression has not been characterized in detail. H. pylori induce persistent inflammatory infiltration. Neutrophils are unique in that they directly infiltrate into foveolar epithelium aiming the proliferative zone specifically. Neutrophilic proliferative zone foveolitis is ...
Ninaber Maarten M Department of Pulmonology, Leiden University Medical Center Leiden, The - - 2014
Cigarette smoking is a major risk factor for pulmonary Langerhans cell histiocytosis (pLCH) and lung cancer. Resolution of pLCH may occur spontaneously, after smoking cessation or other interventions. However, despite clinicoradiological resolution, residual pulmonary Langerhans cells may be present and may lead to recurrent disease. We report the first case ...
Gowda K Lakshmana - - 2014
Purpose: Many virulence factors are involved in the pathomechanism of infection caused by Helicobacter pylori. Toxins such as vacuolating cytotoxin, encoded by the vacA gene and the immunogenic protein cagA, encoded by the cagA gene (cytotoxin-associated gene) are major factors conferring the property of virulence. The current study is aimed ...
Bauer Georg G Institute of Virology, Department of Medical Microbiology and Hygiene, University Medical Center, Freiburg, D-79104, - - 2014
Malignant transformation of gastric epithelial cells by chronic Helicobacter (H.) pylori infection is caused by several mechanisms including attraction of reactive oxygen species (ROS)-producing neutrophils and CagA-mediated dysplastic alterations. Here we show that H. pylori protects transformed cells from ROS-mediated intercellular induction of apoptosis. This potential control step in oncogenesis ...
Zhao Yongxun Y The Second Clinical Medical School of Lanzhou University, Lanzhou, Gansu 730030, P.R. - - 2014
Helicobacter pylori (H. pylori) infection plays an important role in the development of gastric carcinomas. Cancerous inhibitor of protein phosphatase 2A (CIP2A) is a novel human oncoprotein that functions as an important regulator of cell growth and malignant transformation. In the present study, we aimed to investigate the potential mechanisms by which ...
Kim Sa-Hyun SH 1. Department of Clinical Laboratory Science, Semyung University, Jaecheon 390-711, Republic of - - 2014
Two key virulence factors of Helicobacter pylori are the secreted virulent proteins of vacuolating toxin A (VacA) and cytotoxin associated protein A (CagA) which lead to damages of gastric epithelial cells. We previously identified that the cyanidin 3-O-glucoside (C3G) inhibits the secretion of both VacA and CagA. In the current ...
Paulo Joao A JA Department of Cell Biology, Harvard Medical School, Boston, USA. - - 2014
Cigarette smoking is a known risk factor of pancreatic disease. Nicotine - a major cigarette tobacco component - can traffic through the circulatory system and may induce fibrosis and metastasis, hallmarks of chronic pancreatitis and pancreatic adenocarcinoma, respectively. However, at the biomolecular level, particularly in pancreatic research, the effects of ...
Ling Samantha Shi Min SS Samantha Shi Min Ling, Bow Ho, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, - - 2013
Helicobacter pylori (H. pylori) produce an enzyme known as γ-glutamyl transpeptidase (HpGGT) that is highly conserved and common to all strains. HpGGT has been gaining increasing attention as an important virulence factor of the bacterium, having been demonstrated to be an important colonization factor in several animal models and has ...
Song Xin - - 2013
Helicobacter pylori encoded CagA is presently the only known virulence factor that is injected into gastric epithelial cells where it destroys apical junctional complexes and induces dedifferentiation of gastric epithelial cells, leading to H. pylori-related gastric carcinogensis. However, little is known about the molecular mechanisms by which CagA mediates these ...
Bessède E - - 2013
Helicobacter pylori infection is the major risk factor for gastric adenocarcinoma. The link with gastric adenocarcinoma is partly due to the H. pylori CagA oncoprotein. CagA is responsible for a particular cell phenotype in vitro, the 'hummingbird' phenotype, that corresponds to an elongation of the cells, mimicking an epithelial-mesenchymal transition ...
Sierra Johanna C JC Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, - - 2013
Chronic infection of the gastric mucosa by Helicobacter pylori is associated with an increased risk of developing gastric cancer; however, the vast majority of infected individuals never develop this disease. One H. pylori virulence factor that increases gastric cancer risk is the cag pathogenicity island, which encodes a bacterial type ...
Teymournejad Omid O Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, - - 2013
The Helicobacter pylori outer membrane proteins play an important role in pathogenesis; the outer inflammatory protein A (OipA) is one of these proteins which play the main role in the development of inflammation. In this study, purification of recombinant H. pylori OipA was performed by Ni-NTA affinity chromatography. Gastric carcinoma ...
Wu Jia - - 2013
The destruction of the integrity of the gastric epithelial barrier underlies the pathology of many gastric diseases, including gastric tumors. The Helicobacter pylori virulence factor CagA is one of the main destroyers of the gastric epithelial barrier. There are differences among CagA proteins that originate from different isolates. CagA translocated ...
Chiou Pei-Yu - - 2013
In the model organism Escherichia coli, Min proteins are involved in regulating the division of septa formation. The computational genome analysis of Helicobacter pylori, a gram-negative microaerophilic bacterium causing gastritis and peptic ulceration, also identified MinC, MinD, and MinE. However, MinC (HP1053) shares a low identity with those of other ...
Lin Chuang-Hao CH Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung City 807, - - 2013
Plastic products are wildly used in human life. Di(2-ethylhexyl)phthalate (DEHP) is an essential additive in plastic manufacturing and is used as plasticizer for many products including plastic food packaging. DEHP is a teratogenic compound and can cause potent reproductive toxicity. DEHP can also cause liver damage, peroxisome proliferation, and carcinogenesis. ...
Wang Qin Q Department of Respiratory Medicine, Qilu Hospital, Shandong University, Jinan, P.R. - - 2013
Cigarette smoke is a major risk factor for lung cancer, which may contribute to lung cancer invasion and metastasis. However, the mechanism remains unclear. Epithelial-mesenchymal transition (EMT) is a critical phenotypic alteration of cells that triggers invasion and metastasis. The urokinase-type plasminogen activator receptor (uPAR) is originally thought to assist ...
Shimomura Hirofumi - - 2013
The glucosylation of free cholesterol (FC) by Helicobacter pylori cells has various biological significances for the survival of this bacterium. H. pylori cells with glucosylated FC are capable of evading host immune systems, such as phagocytosis by macrophages and activation of antigen-specific T cells, and surviving in the gastric mucosal ...
Pace Nicholas J - - 2012
On (cell) suicide watch: The increased permeability of apoptotic cells was used to identify a peptide-based, covalent inhibitor (NJP2) for glutathione S-transferase omega (GSTO1) that is highly selective for apoptotic cells, with no inhibition of healthy cells. This apoptosis-specific peptide could also be used for imaging programmed cell death.
Sun Peixin - - 2012
Medulloblastoma (MB) is one of the most common malignant brain tumors of childhood and is associated with a poor prognosis. Gap-junctional intercellular communication (GJIC) is an important mode for cell-to-cell communication. Dysfunctional GJIC is exhibited in most cancer cells. There is significant evidence that GJIC is important in at least ...
Dolan Brendan - - 2012
Helicobacter pylori colonises the gastric mucosa of humans. The majority of organisms live in mucus. These organisms are an important reservoir for infection of the underlying epithelium. Cell culture models for H. pylori infection do not normally possess a mucus layer. The interaction of H. pylori with TFF1, a member ...
Yang Jin - - 2012
To establish a novel, targeted lentivirus-mediated LEP503-HSV-tk/GCV suicide gene therapy system combined with all trans-retinoic acid (ATRA) for the inhibition of human lens epithelial cell (HLEC) proliferation and treatment of posterior capsular opacification (PCO) after cataract surgery; to estimate the enhancement of the bystander effect by ATRA; and to explore ...
Bektaş Mehmet M Department of Gastroenterology (Mehmet Bektaş, Hülya Çetinkaya, Murat Törüner, Onur Keskin, İrfan Soykan, Esen Ismet Oktay, Esin Korkut, Yusuf Üstün, Kadir - - 2012
Excessive release of gastrin leads to hypertrophy and hyperplasia of enterochromaffin-like cells (ECL) and prolonged stimulation of these cells causes functional impairment. The purpose of this study was to investigate the effect of Helicobacter pylori (H. pylori) infection and long-term proton pump inhibitors (PPI) use on ECL cells. Fifteen patients ...
Kang N-H - - 2011
Genetically engineered stem cells (GESTECs) expressing suicide genes which can convert non-toxic prodrugs to toxic metabolites have been shown to reduce tumour growth. In this sudy, we employed human amniotic fluid-derived stem cells (hAFSCs) as a source of cells for suicide gene transfer. hAFSCs were engineered to express multiple suicide ...
Taylor Kristen R KR Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California 92037, - - 2011
Skin complications and chronic non-healing wounds are common in obesity, metabolic disease, and type 2 diabetes. Epidermal γδ T cells normally produce keratinocyte growth factors, participate in wound repair, and are necessary for keratinocyte homeostasis. We have determined that in γδ T cell-deficient mice, there are reduced numbers of keratinocytes ...
Dramane G - - 2011
It has been well propounded that there exists five basic taste modalities, e.g., sweet, sour, bitter, salty and umami. Recent compelling evidence from rodents and human beings raises the possibility for an additional sixth taste modality devoted to the perception of lipids. A number of studies have suggested that lingual ...
Zueva Elina - - 2011
Metastasis, the capacity of tumour cells to disseminate and grow at distant sites, is the main factor in cancer mortality. Compounds inhibiting migration and invasion of cancer cells are promising candidates for anticancer therapy strategies. We have generated nuclease-resistant RNA ligands (aptamers) recognizing highly metastatic cells with high affinity and ...
Batista-Arteaga M - - 2011
Unilateral testicular enlargement was detected in a 5-years-old domestic ferret during a routine sterilization. The right testicle showed two different types of proliferative lesions: (i) round nodules, well demarcated, showing a soft yellow tissue; (ii) white nodules, firm, with irregular-shaped invaginations. Microscopically, the neoplastic proliferations were identified as an interstitial ...
Gaud Guillaume - - 2011
Tissue factor pathway inhibitor-2 (TFPI-2) is a potent inhibitor of plasmin which activates matrix metalloproteinases (MMPs) involved in degradation of the extracellular matrix. Its secretion in the tumour microenvironment makes TFPI-2 a potential inhibitor of tumour invasion and metastasis. As demonstrated in aggressive cancers, TFPI-2 is frequently down-regulated in cancer ...
Grande Sveva - - 2011
The glycosylation process, through the addition of carbohydrates, is a major post-translational modification of proteins and glycolipids. Proteins may be glycosylated in either the secretory pathway leading to N-linked or O-linked glycoproteins or as nucleocytoplasmic glycosylation that targets only single proteins involving a single β-linked N-acetylglucosamine. In both cases, the ...
Kaltsas Gregory A - - 2011
Connective tissue growth factor (CTGF) and IGF1 are both expressed in a variety of tumours and are involved in tumourigenesis. However, information about their expression in the gastrointestinal (GI) neuroendocrine (NE) cells and tumours is mainly limited, with the exception of midgut carcinoids where abundant CTGF expression has been demonstrated. ...
Nosho Katsuhiko K Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, - - 2010
The abundance of tumour-infiltrating T-cells has been associated with microsatellite instability (MSI) and a favourable prognosis in colorectal cancer. However, numerous molecular alterations have been associated with clinical outcome, and potentially confounding the biological and prognostic significance of tumour-infiltrating T-cells. We utilized a database of clinically and molecularly-annotated colon and ...
Roelants Mieke - - 2011
Hypericin is a bright red fluorescent compound that can be used in urological medicine as a photodiagnostic to detect non-muscle-invasive bladder cancer lesions. To this end a bladder instillation fluid is prepared in which the water-insoluble hypericin is solubilized by the presence of human serum albumin (HSA) to which the ...
1 2 3 4 5 6 7 8 9 10 >