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Kang S-K SK Department of Oral Medicine, School of Dentistry, Kyung Hee University, Seoul, - - 2014
Resistin was recently reported to play a role in inflammation-related diseases such as arthritis. However, the precise role of resistin in chronic inflammatory diseases, such as periodontal disease, remains unclear. The aim of this study was to investigate the combined effects of nicotine and lipopolysaccharide (LPS) on the expression of ...
Benakanakere M M Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, - - 2014
Periodontitis is a common chronic inflammatory disease that is initiated by a complex microbial biofilm that poses significant health and financial burdens globally. Porphyromonas gingivalis is a predominant pathogen that maintains chronic inflammatory periodontitis. Toll-like receptors (TLRs) play an important role in periodontitis by recognizing pathogens and maintaining tissue homeostasis. ...
Lima Juiz Paulo José PJ Center for Health Sciences, Federal University of Recôncavo da Bahia, Cajueiro, 44570-000 Santo Antônio de Jesus, Bahia, - - 2014
In the present study, essential oils extracted from the leaves and flowers of Lippia alba (Mill.) N.E.Br. (L. alba) were analyzed for their antimicrobial activity and their effects on osteoclasts. The periodontal pathogens, Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans; ATCC 43717), Fusobacterium nucleatum (F. nucleatum; ATCC 25586) and Porphyromonas gingivalis (P. gingivalis); ATCC 33277) were used in antimicrobial activity assays ...
Azman Raja R Infection and Immunity Research Group, Immunology, Level 9, Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, 378 Sauchiehall Street, Glasgow, G2 3JZ, - - 2014
IL-17A is implicated in periodontitis pathogenesis. The roles of IL-17B-IL-17F and IL-17A/F are unknown. This study aimed to determine clinical associations between IL-17 family cytokines and periodontitis and to investigate the biological roles of IL-17A and IL-17E using in vitro model systems. Samples from 97 patients with periodontitis and 77 ...
He D D Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. - - 2014
Mechanical force-induced orthodontic root resorption is a major clinical challenge in orthodontic treatment. Macrophages play an important role in orthodontic root resorption, but the underlying mechanism remains unclear. In this study, we examined the mechanism by which the ratio of M1 to M2 macrophage polarization affects root resorption during orthodontic ...
Wu Wenlei W Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing, Jiangsu 210008, P.R. - - 2014
Periodontitis is a disease, which is associated with chronic inflammation and leads to significant destruction of periodontal tissues. Periodontal ligament cells (PDLCs) constitute the largest cell population in PDL tissues and a considerable body of evidence has demonstrated an association between oxidative stress and the progression of periodontitis. However, the ...
Huang Xin X Department of Periodontology, Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong, - - 2014
Background: The NLRP3 inflammasome is essentially a family of intracellular innate immune sensors that can respond to bacterial challenge and initiate early host immunity responses. However, involvement and possible molecular mechanism of NLRP3 pathway in the context of chronic periodontitis (CP) and diabetes mellitus have yet to be fully elucidated. ...
Bielecka Ewa E Lund University, - - 2014
Evasion of killing by the complement system, a crucial part of innate immunity, is a key evolutionary strategy of many human pathogens. A major etiological agent of chronic periodontitis, the Gram-negative bacterium Porphyromonas gingivalis produces a vast arsenal of virulence factors that compromise human defense mechanisms. One of these is ...
Ma Zhiwei Z State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi-an, - - 2014
We established a murine periodontitis model by local injection of lipopolysaccharide of Porphyromonas gingivalis (Pg-LPS) into the gingival sulcus of mandibular left incisor four times with 48-h interval. The histological examination of the periodontal tissues demonstrated that significant loss of periodontal bone and ligaments was observed in the lesion side ...
Wilensky Asaf A Department of Periodontology, Hadassah Medical Center, Hebrew University, Jerusalem, - - 2014
Cysteine proteases (gingipains) from Porphyromonas gingivalis are key virulence factors in chronic periodontitis. Innate immune receptors CD14, Toll-like receptor (TLR) 2 and TLR4 are important in P. gingivalis recognition. We examined the ability of gingipains to cleave CD14, TLR2 and TLR4, and the consequences for the cellular response to bacterial ...
Yoshimoto T T Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, - - 2014
Apoptosis is thought to contribute to the progression of periodontitis. It has been suggested that the apoptosis of epithelial cells may contribute to the loss of epithelial barrier function. Smad2, a downstream signaling molecule of TGF-β receptors (TGF-βRs), is critically involved in apoptosis in several cell types. However, the relationship ...
Joo Nam E NE 1 Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan , Ann Arbor, - - 2014
Disruption of cell-matrix interactions can lead to anoikis-apoptosis due to loss of matrix contacts. We previously showed that Nerve/glial antigen 2 (NG2) is a novel anoikis receptor. Specifically, overexpression of NG2 leads to anoikis propagation, whereas its suppression leads to anoikis attenuation. Interestingly, NG2 expression decreases in late anoikis, suggesting ...
Souto Giovanna Ribeiro GR Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. Electronic address: - - 2014
Evaluate the effects of smoking on dendritic cells (DCs), cytokines, clinical periodontal parameters, and number of teeth in samples of human chronic periodontitis (CP). Gingival samples were obtained from 24 smokers and 21 non-smokers with CP. Periodontal examination was carried out. Immunohistochemical staining was performed to identify Factor XIIIa+ immature, ...
Ozdemir Burcu B Department of Periodontology, Faculty of Dentistry, Gazi University, Ankara, Turkey; Division of Oral Biology, Bernhard Gottlieb School of Dentistry, Medical University, Vienna, - - 2014
Endocannabinoids are associated with multiple regulatory functions in several tissues. The main endocannabinoids, anandamide (AEA) and 2-arachidonylglycerol (2-AG), have been detected in the gingival crevicular fluid of periodontitis patients, but the association between periodontal disease or human periodontal ligament cells (hPdLCs) and endocannabinoids still remain unclear. The aim of the ...
Tamanai-Shacoori Zohreh Z Equipe de Microbiologie, EA 1254, Université Rennes 1, UEB, Rennes, - - 2014
The purpose of this study was to evaluate various biological effects of silver-zeolite and a polyphenol-rich extract of A. nodosum (ASCOP) to prevent and/or treat biofilm-related oral diseases. Porphyromonas gingivalis and Streptococcus gordonii contribute to the biofilm formation associated with chronic periodontitis. In this study, we evaluated in vitro antibacterial ...
Zheng Yunfei Y Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China; Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, P.R. - - 2014
Calprotectin, a heterodimer of S100A8 and S100A9 subunits, is associated with inflammatory disorders such as rheumatoid arthritis and cystic fibrosis. Although calprotectin levels are increased significantly in the gingival crevicular fluid (GCF) of periodontitis patients, its effects on periodontal ligament cells (PDLCs) remain largely unknown. The aim of this study ...
Lu Huaixiu H Department of Stomatology, Navy General Hospital, Beijing, - - 2014
This study assessed the roles of chronic stress (CS) in the stimulation of the sympathetic nervous system and explored the underlying mechanisms of periodontitis. Using an animal model of periodontitis and CS, the expression of tyrosine hydroxylase (TH) and the protein levels of the α1-adrenergic receptor (α1-AR) and β2-adrenergic receptor ...
Gölz L L Department of Orthodontics, Dental Clinic, University Hospital of Bonn, Welschnonnenstraße. 17, 53111 Bonn, - - 2014
Oxidative stress is characterized by an accumulation of reactive oxygen species (ROS) and plays a key role in the progression of inflammatory diseases. We hypothesize that hypoxic and inflammatory events induce oxidative stress in the periodontal ligament (PDL) by activating NOX4. Human primary PDL fibroblasts were stimulated with lipopolysaccharide from ...
Osterholzer John J JJ Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, - - 2012
Fibrotic disorders of the lung are associated with perturbations in the plasminogen activation system. Specifically, plasminogen activator inhibitor-1 (PAI-1) expression is increased relative to the plasminogen activators. A direct role for this imbalance in modulating the severity of lung scarring following injury has been substantiated in the bleomycin model of ...
Martinet Wim - - 2012
OBJECTIVE: Stent-based delivery of the mammalian target of rapamycin (mTOR) inhibitor everolimus is a promising strategy for the treatment of coronary artery disease. We studied potential adverse effects associated with mTOR inhibition. METHODS AND RESULTS: Macrophages in culture were either treated with everolimus or starved to inhibit mTOR. Everolimus led ...
Gonnert Falk A - - 2012
ABSTRACT: Chronic sequelae of sepsis represent a major, yet underappreciated clinical problem, contributing to long-term mortality and quality-of-life impairment. In chronic liver disease, inflammation perpetuates fibrogenesis, but development of fibrosis in the post-acute phase of systemic inflammation has not been studied. Therefore, a mouse model of post-acute sequelae of sepsis ...
Royce Simon G - - 2012
Fibrosis is one of the key pathological features of airway remodeling in asthma. In the normal airway the amount of collagen and other extracellular matrix components is kept in equilibrium by regulation of synthesis and degradation. In asthma this homeostasis is disrupted due to genetic and environmental factors. In the ...
Knight Virginia - - 2012
Protease-activated receptor (PAR) 2 is a G-protein-coupled receptor that is activated after proteolytic cleavage by serine proteases, including mast cell tryptase and activated coagulation factors. PAR-2 activation augments inflammatory and profibrotic pathways through the induction of genes encoding proinflammatory cytokines and extracellular matrix proteins. Thus, PAR-2 represents an important interface ...
Bellini A - - 2011
Fibrocytes contribute to the fibrotic changes most frequently observed in forms of asthma where inflammation is driven by T helper type 2 (Th2) cells. The mechanisms that regulate the profibrotic function of asthmatic fibrocytes are largely unknown. We isolated circulating fibrocytes from patients with allergen-exacerbated asthma, who showed the presence ...
Nie Z - - 2011
Keloid is a common skin condition, especially in people of Asian and African decent. The treatment of keloid is still unsatisfactory. Photodynamic therapy (PDT) is a novel treatment for this condition, but is widely used in treating certain skin pre-malignant and malignant lesions due to its high efficiency and safety. ...
Billiau Alfons - - 2011
In this review, we discuss our studies on the pathogenesis of collagen-induced arthritis (CIA) and related mouse models for rheumatoid arthritis. Of note, these models invariably rely on the use of complete Freund's adjuvant (CFA). Our analysis has focused on explaining the dichotomous - either protective or disease-promoting - role ...
Malik Ahsan F AF Section of Digestive Diseases and Departments of Pathology and Biomedical Engineering, Yale University, New Haven, CT 06520, - - 2011
Implantation of biomaterials and devices into soft tissues leads to the development of the foreign body response (FBR), which can interfere with implant function and eventually lead to failure. The FBR consists of overlapping acute and persistent inflammatory phases coupled with collagenous encapsulation and currently there are no therapeutic options. ...
Do D V - - 2011
Background:  Keloid scarring is a dermal fibroproliferative disorder characterized by increased fibroblast proliferation and excessive production of collagen-extracellular matrix (ECM) components. To date, the role of cytokines in the keloid pathogenesis has not been completely unraveled. Interleukin-18 (IL-18) is a pro-inflammatory cytokine that plays important roles in wound healing, fibrogenesis ...
Skjøt-Arkil Helene - - 2011
Abstract By secreting proteases such as cathepsins and matrix metalloproteinases (MMPs), macrophage foam cells may be a major cause of ruptured atherosclerotic plaques. The aims of the present study were to investigate in vitro role of human macrophage foam cells in degrading type I collagen, a major component of extracellular ...
Pal-Ghosh Sonali - - 2011
Recurrent corneal erosions are painful and put patients' vision at risk. Treatment typically begins with debridement of the area around the erosion site followed by more aggressive treatments. An in vivo mouse model has been developed that reproducibly induces recurrent epithelial erosions in wild-type mice spontaneously within two weeks after ...
Olaso Elvira - - 2011
Hepatic stellate cells (HSCs) interact with fibrillar collagen through the discoidin domain receptor 2 (DDR2) in acute hepatic injury, generating increased fibrosis. However, the contribution of DDR2 signaling to chronic liver fibrosis in vivo is unclear, despite its relevance to chronic human liver disease. We administered carbon tetrachloride (CCl(4)) to ...
Millar Neal L - - 2011
OBJECTIVES: To seek evidence for the role of hypoxia in early human tendinopathy, and thereafter to explore mechanisms whereby tissue hypoxia may regulate apoptosis, inflammatory mediator expression and matrix regulation in human tenocytes.METHODS: Fifteen torn supraspinatus tendon (established pathology) and matched intact subscapularis tendon (representing 'early pathology') biopsies were collected ...
Xuzhu Gao G Institute of Infection, Immunity and Infl ammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, - - 2012
Alcohol intake is inversely related to rheumatoid arthritis (RA) disease incidence and severity. Resveratrol, a safe, well-described plant-derived compound, possesses anti-inflammation and immune-regulatory properties and is present in red wine. As such, it could mediate anti-inflammatory properties of the latter and offer novel therapeutic utility in is own right. To ...
Tal Orna - - 2011
Dendritic cells (DCs) must travel through lymphatics to carry skin antigens into lymph nodes. The processes controlling their mobilization and migration have not been completely delineated. We studied how DCs in live mice respond to skin inflammation, transmigrate through lymphatic endothelium, and propagate in initial lymphatics. At steady state, dermal ...
Wang Yanhui - - 2011
Cardiac fibroblasts play the key role in cardiac function and matrix metalloproteinases-9 (MMP-9) is a well known contributor to the development of myocardial remodeling. However, the direct regulation of MMP-9 on the function of cardiac fibroblasts and the underlying mechanism are far from elucidation. In the present research, recombinant protein ...
Lee Soo-Jin - - 2012
Topical retinoids inhibit matrix metalloproteinases and accelerate collagen synthesis, thereby triggering antiaging effects in the skin. However, topical retinoids can cause severe skin reactions, including scaling, erythema, papules, and inflammation. The present study demonstrates that the ethanolic bark extract of Alstonia scholaris R. Br. can significantly inhibit all-trans retinoic acid-induced ...
Koca Suleyman Serdar - - 2011
Scleroderma is a chronic fibrotic disorder. Bortezomib, a proteasome inhibitor, is reported to attenuate experimentally induced renal and cardiac fibrosis. This study aimed to evaluate the preventive and therapeutic efficacies of bortezomib on a bleomycin (BLM)-induced scleroderma model. Dermal fibrosis was induced in Balb/c mice by subcutaneous BLM (100 μg/day) injections. ...
Mi Su - - 2011
Pulmonary fibrosis is the pathologic basis for a variety of incurable human chronic lung diseases. IL-17A, a glycoprotein secreted from IL-17-producing cells, has recently been shown to be a proinflammatory cytokine involved in chronic inflammation and autoimmune disease. In this study, we report that IL-17A increased the synthesis and secretion ...
Dewit Jasper - - 2011
A cartilaginous pectoral fin endoskeleton in zebrafish (Danio rerio) develops early, after which the cartilage of the larval fin endoskeleton undergoes a complete transformation into the adult morphology. This transformation includes multiple subdivisions of a single cartilaginous disk. The type of cartilage subdivision is unique to teleost fish. In this ...
Nakahama Taisuke - - 2011
The contributions of aryl hydrocarbon receptor (Ahr) to the pathogenesis of rheumatoid arthritis have not been elucidated. Here, we show that Ahr deficiency ameliorated collagen-induced arthritis, a mouse model of RA. Collagen-immunized Ahr KO mice showed decreased serum levels of such proinflammatory cytokines as IL-1β and IL-6. The Th17 and ...
Ardissone Vittoria - - 2011
OBJECTIVE.: The aim of the present study was to assess the therapeutic potential of a P2X purinergic receptor antagonist, namely periodate oxidized ATP (oATP), in collagen-induced arthritis (CIA). METHODS.: Arthritis was induced in male DBA/1J mice by immunization with type II collagen. Animals showing digits inflammation and paw swelling were ...
Pauley Kaleb M - - 2011
Evaluation of: Nakasa T, Shibuya H, Nagata Y, Niimoto T, Ochi M: The inhibitory effect of microRNA-146a expression on bone destruction in collagen-induced arthritis. Arthritis Rheum. 63(6), 1582-1590 (2011). miRNA-146a (miR-146a) has been shown to play an important role in the negative regulation of inflammatory innate immune responses, and is ...
King Talmadge E TE - - 2011
Idiopathic pulmonary fibrosis is a devastating, age-related lung disease of unknown cause that has few treatment options. This disease was once thought to be a chronic inflammatory process, but current evidence indicates that the fibrotic response is driven by abnormally activated alveolar epithelial cells (AECs). These cells produce mediators that ...
Xiao Cheng - - 2011
Puerarin is a major active ingredient extracted from the root of P. lobata, a traditional Chinese herb, and possesses anti-oxidative and anti-inflammatory activities. However, the low oral bioavailability of puerarin limits its further application. Therefore, we synthesized tetraacetyl puerarin (4AC) through acetylation to improve its liposolubility and bioavailability. In the ...
Wynes Murry W - - 2011
Idiopathic pulmonary fibrosis (IPF) is associated with the accumulation of collagen-secreting fibroblasts and myofibroblasts in the lung parenchyma. Many mechanisms contribute to their accumulation, including resistance to apoptosis. In previous work, we showed that exposure to the proinflammatory cytokines TNF-α and IFN-γ reverses the resistance of lung fibroblasts to apoptosis. ...
Sun Lin L Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, - - 2011
Inflammation plays a major role in the destruction of cartilage in osteoarthritis (OA), with the interaction of multiple mediators, immune cells, fibroblasts and chondrocytes. Current 2D studies in vitro with cell lines, as well as animal models, are limited in terms of providing insight into pathogenic mechanisms related to the ...
Weindl Günther - - 2011
Topical glucocorticoids (GCs) are extensively used in the treatment of inflammatory skin diseases. However, their long-term use is often accompanied by severe and eventually irreversible adverse effects, with atrophy being the most important limitation. Currently, most non-clinical studies involve animal testing, so the results are not always representative of the ...
Pal Sankhadeep - - 2011
Cadmium (Cd) is one of the ubiquitous environmental pollutants and is responsible for various organ pathophysiology including hepatic disorders. It is extremely toxic even in low concentrations and bioaccumulate in organisms. The present study has been carried out to investigate the cytoprotective role of arjunolic acid (AA), a tri terpenoid ...
Choi Jung Kyoung - - 2011
Recently, many studies have shown that granulocyte macrophage-colony stimulating factor (GM-CSF) has anti-apoptotic activity and regulates the expression of anti-apoptotic genes including Bcl-2 family proteins in neuronal cells in vitro and in vivo. This study investigated detailed mechanism of GM-CSF involved in its anti-apoptotic activity and regulation of Bcl-2 expression ...
Peng Xueyan - - 2011
Collagen-containing leukocytes (CD45+Col-I+) accumulate in diseased and fibrotic tissues. However, the precise identity of these cells and whether injury is required for their recruitment remain unknown. Using a murine model of pulmonary fibrosis in which an inducible, bioactive form of the human transforming growth factor (TGF)-β1 gene is targeted to ...
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