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acute and chronic inflamation

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https://www.readbyqxmd.com/read/28509283/in-vivo-molecular-mri-of-icam-1-expression-on-endothelium-and-leukocytes-from-subacute-to-chronic-stages-after-experimental-stroke
#1
Lisette H Deddens, Geralda A F van Tilborg, Kajo van der Marel, Hedi Hunt, Annette van der Toorn, Max A Viergever, Helga E de Vries, Rick M Dijkhuizen
Molecular MRI allows in vivo detection of vascular cell adhesion molecules expressed on inflamed endothelium, which enables detection of specific targets for anti-neuroinflammatory treatment. We explored to what extent MR contrast agent targeted to intercellular adhesion molecule-1 (ICAM-1) could detect endothelial- and leukocyte-associated ICAM-1 expression at different stages after experimental stroke. Furthermore, we assessed potential interfering effects of ICAM-1-targeted contrast agent on post-stroke lesion growth...
May 16, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28363903/ifn-regulatory-factor-3-potentiates-emphysematous-aggravation-by-lipopolysaccharide
#2
Takashi Ishii, Keisuke Hosoki, Yuichi Nikura, Naohide Yamashita, Takahide Nagase, Naomi Yamashita
Acute exacerbation of chronic obstructive pulmonary disease (COPD) is often induced by infection and often has a poor prognosis. Bacterial LPS activates innate immune receptor TLR4 followed by activation of a transcriptional factor IFN regulatory factor-3 (IRF3) as well as NF-κB, resulting in upregulation of various inflammatory mediators. To clarify the role of IRF3 in the pathogenesis of LPS-triggered COPD exacerbation, porcine pancreatic elastase (PPE) followed by LPS was administered intranasally to wild-type (WT) or IRF3(-/-) male mice...
May 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28346012/lymphangiogenesis-fuel-smoke-or-extinguisher-of-inflammation-s-fire
#3
REVIEW
Gabriella R Abouelkheir, Bradley D Upchurch, Joseph M Rutkowski
Lymphangiogenesis is a recognized hallmark of inflammatory processes in tissues and organs as diverse as the skin, heart, bowel, and airways. In clinical and animal models wherein the signaling processes of lymphangiogenesis are manipulated, most studies demonstrate that an expanded lymphatic vasculature is necessary for the resolution of inflammation. The fundamental roles that lymphatics play in fluid clearance and immune cell trafficking from the periphery make these results seemingly obvious as a mechanism of alleviating locally inflamed environments: the lymphatics are simply providing a drain...
April 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28287106/neutrophils-as-protagonists-and-targets-in-chronic-inflammation
#4
REVIEW
Oliver Soehnlein, Sabine Steffens, Andrés Hidalgo, Christian Weber
Traditionally, neutrophils have been acknowledged to be the first immune cells that are recruited to an inflamed tissue and have mainly been considered in the context of acute inflammation. By contrast, their importance during chronic inflammation has been studied in less depth. This Review aims to summarize our current understanding of the roles of neutrophils in chronic inflammation, with a focus on how they communicate with other immune and non-immune cells within tissues. We also scrutinize the roles of neutrophils in wound healing and the resolution of inflammation, and finally, we outline emerging therapeutic strategies that target neutrophils...
April 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28222444/inflammation-a-double-edged-sword-in-the-response-to-pseudomonas-aeruginosa-infection
#5
Christina K Lin, Barbara I Kazmierczak
The Gram-negative opportunistic pathogen Pseudomonas aeruginosa exploits failures of barrier defense and innate immunity to cause acute infections at a range of anatomic sites. We review the defense mechanisms that normally protect against P. aeruginosa pulmonary infection, as well as the bacterial products and activities that trigger their activation. Innate immune recognition of P. aeruginosa is critical for pathogen clearance; nonetheless, inflammation is also associated with pathogen persistence and poor host outcomes...
2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28210458/osseous-oral-hyaline-ring-granuloma-mimicking-a-mandible-tumor-in-a-child-with-congenital-agenesis-of-the-corpus-callosum
#6
Rodrigo Neves-Silva, Camilla-Borges Ferreira-Gomes, Natalia Palmier, Marcelo Brum-Corrêa, Oslei Paes-Almeida, Marcio Ajudarte-Lopes, Pablo Agustin-Vargas, Alan-Roger Santos-Silva
BACKGROUND: Hyaline ring granuloma (HRG) of the oral cavity is an uncommon disorder considered to be a foreign-body reaction resulting from implantation of food vegetable particles. Microscopically, it is characterized by the presence of structures of hyaline rings in an inflamed fibrous tissue background, which contains multinucleated giant cells. MATERIAL AND METHODS: We present the case of a 4-year-old boy diagnosed with a mandible osseous HRG, which showed clinical and tomographic aspects suggestive of an aggressive bone tumor...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28158929/the-analgesic-and-anti-inflammatory-effects-of-salvinorin-a-analogue-%C3%AE-tetrahydropyran-salvinorin-b-in-mice
#7
K F Paton, N Kumar, R S Crowley, J L Harper, T E Prisinzano, B M Kivell
BACKGROUND: Drugs activating the mu opioid receptor are routinely used to treat severe acute and chronic pain. Unfortunately, side effects including nausea, constipation, respiratory depression, addiction and tolerance can limit clinical utility. In contrast, kappa opioid receptor (KOPr) agonists, such as Salvinorin A (SalA), have analgesic properties with little potential for abuse. METHODS: We evaluated SalA and the novel analogue β-tetrahydropyran Salvinorin B (β-THP SalB) for the ability to modulate pain and inflammation in vivo...
February 3, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28145512/tdag8-involved-in-initiating-inflammatory-hyperalgesia-and-establishing-hyperalgesic-priming-in-mice
#8
Shih-Ping Dai, Ya-Han Huang, Chung-Jen Chang, Yu-Fen Huang, Wei-Shan Hsieh, Yasuhiko Tabata, Satoshii Ishii, Wei-Hsin Sun
Chronic pain, resulting from injury, arthritis, and cancer, is often accompanied by inflammation. High concentrations of protons found in inflamed tissues results in tissue acidosis, a major cause of pain and hyperalgesia. Acidosis signals may mediate a transition from acute to chronic hyperalgesia (hyperalgesic priming) via proton-sensing G-protein-coupled receptors (GPCRs). The expression of T-cell death-associated gene 8 (TDAG8), a proton-sensing GPCR, is increased during inflammatory hyperalgesia. Attenuating TDAG8 expression in the spinal cord inhibits bone cancer pain, but whether TDAG8 is involved in inflammatory hyperalgesia or hyperalgesic priming remains unclear...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28125562/o-014-bacterial-sensor-nod2-deletion-causes-th2-inflammatory-bowel-disease-improvement-without-inducing-acute-metatranscriptomic-dysbiosis-in-mice
#9
Alexander Rodriguez-Palacios, Daniele Corridoni, Gabriella Di Stefano, Luca Di Martino, D A Antonopoulos, Eugene Chang, T T Pizarro, Fabio Cominelli
BACKGROUND: Although single nucleotide polymorphisms in the NOD2 (nucleotide-binding oligomerization domain-containing 2) gene have been associated with the pathogenesis of Crohn's disease (CD), little is known about the role of nonpolymorphic wild-type (WT) NOD2 genes in the gut. To date, most animal studies addressing the role of WT NOD2 have been conducted using healthy (ileitis/colitis-free) mouse strains, and have attributed a modulating effect to the gut microbiome, partly based on 16S rRNA sequencing...
February 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/27966195/beyond-bronchitis-a-review-of-the-congenital-and-acquired-abnormalities-of-the-bronchus
#10
REVIEW
Thomas Marini, Susan K Hobbs, Abhishek Chaturvedi, Kathrine Kaproth-Joslin
Anomalies of the bronchus can be both congenital and acquired. Several different congenital aberrations of the bronchial anatomy are commonly encountered including tracheal bronchus, accessory cardiac bronchus, and bronchial agenesis/aplasia/hypoplasia. In addition, Williams-Campbell syndrome and cystic fibrosis are two other congenital conditions that result in bronchial pathology. Acquired pathology affecting the bronchi can typically be divided into three broad categories of bronchial disease: bronchial wall thickening, dilatation/bronchiectasis, and obstruction/stenosis...
February 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/27884085/the-roles-of-myeloperoxidase-in-coronary-artery-disease-and-its-potential-implication-in-plaque-rupture
#11
REVIEW
Nathaniel Teng, Ghassan J Maghzal, Jihan Talib, Imran Rashid, Antony K Lau, Roland Stocker
Atherosclerosis is the main pathophysiological process underlying coronary artery disease (CAD). Acute complications of atherosclerosis, such as myocardial infarction, are caused by the rupture of vulnerable atherosclerotic plaques, which are characterized by thin, highly inflamed, and collagen-poor fibrous caps. Several lines of evidence mechanistically link the heme peroxidase myeloperoxidase (MPO), inflammation as well as acute and chronic manifestations of atherosclerosis. MPO and MPO-derived oxidants have been shown to contribute to the formation of foam cells, endothelial dysfunction and apoptosis, the activation of latent matrix metalloproteinases, and the expression of tissue factor that can promote the development of vulnerable plaque...
March 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/27843953/considerations-for-defining-cytokine-dose-duration-and-milieu-that-are-appropriate-for-modeling-chronic-low-grade-inflammation-in-type-2-diabetes
#12
REVIEW
Craig S Nunemaker
Proinflammatory cytokines have been implicated in the pathophysiology of both type 1 diabetes (T1D) and type 2 diabetes (T2D). T1D is an autoimmune disease involving the adaptive immune system responding to pancreatic beta-cells as antigen-presenting cells. This attracts immune cells that surround pancreatic islets (insulitis) and secrete cytokines, such as IL-1beta, IFN-gamma, and TNF-alpha, in close proximity to pancreatic beta-cells. In contrast, there is little evidence for such a focused autoimmune response in T2D...
2016: Journal of Diabetes Research
https://www.readbyqxmd.com/read/27812120/oxidized-phospholipid-oxpapc-activates-trpa1-and-contributes-to-chronic-inflammatory-pain-in-mice
#13
Boyi Liu, Yan Tai, Ana I Caceres, Satyanarayana Achanta, Shrilatha Balakrishna, Xiaomei Shao, Junfan Fang, Sven-Eric Jordt
Oxidation products of the naturally occurring phospholipid 1-palmitoyl-2-arachidonoyl-sn-glycerol-3-phosphatidylcholine (PAPC), which are known as OxPAPC, accumulate in atherosclerotic lesions and at other sites of inflammation in conditions such as septic inflammation and acute lung injury to exert pro- or anti-inflammatory effects. It is currently unknown whether OxPAPC also contributes to inflammatory pain and peripheral neuronal excitability in these conditions. Here, we observed that OxPAPC dose-dependently and selectively activated human TRPA1 nociceptive ion channels expressed in HEK293 cells in vitro, without any effect on other TRP channels, including TRPV1, TRPV4 and TRPM8...
2016: PloS One
https://www.readbyqxmd.com/read/27810214/comparison-of-ultrasound-imaging-and-video-otoscopy-with-cross-sectional-imaging-for-the-diagnosis-of-canine-otitis-media
#14
J Classen, A Bruehschwein, A Meyer-Lindenberg, R S Mueller
Ultrasound imaging (US) of the tympanic bulla (TB) for diagnosis of canine otitis media (OM) is less expensive and less invasive than cross-sectional imaging techniques including computed tomography (CT) and magnetic resonance imaging (MRI). Video otoscopy (VO) is used to clean inflamed ears. The objective of this study was to investigate the diagnostic value of US and VO in OM using cross-sectional imaging as the reference standard. Client owned dogs with clinical signs of OE and/or OM were recruited for the study...
November 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27752406/apophysitis-of-the-tibial-tuberosity-osgood-schlatter-disease-a-review
#15
REVIEW
Raju Vaishya, Ahmad Tariq Azizi, Amit Kumar Agarwal, Vipul Vijay
Osgood-Schlatter disease (OSD) is a condition in which the patellar tendon insertion on the tibial tuberosity becomes inflamed. It is a well-known condition in late childhood characterized by pain and a bony prominence over the tibial tuberosity. The pain is usually exacerbated by physical activities like running, jumping, and climbing stairs. In the acute stage, the margins of the patellar tendon become blurred in radiographs due to the soft tissue swelling. After three to four months, bone fragmentation at the tibial tuberosity is viewed...
September 13, 2016: Curēus
https://www.readbyqxmd.com/read/27752078/antidepressant-activity-of-anti-cytokine-treatment-a-systematic-review-and-meta-analysis-of-clinical-trials-of-chronic-inflammatory-conditions
#16
N Kappelmann, G Lewis, R Dantzer, P B Jones, G M Khandaker
Inflammatory cytokines are commonly elevated in acute depression and are associated with resistance to monoaminergic treatment. To examine the potential role of cytokines in the pathogenesis and treatment of depression, we carried out a systematic review and meta-analysis of antidepressant activity of anti-cytokine treatment using clinical trials of chronic inflammatory conditions where depressive symptoms were measured as a secondary outcome. Systematic search of the PubMed, EMBASE, PsycINFO and Cochrane databases, search of reference lists and conference abstracts, followed by study selection process yielded 20 clinical trials...
October 18, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27695532/role-of-endoscopic-third-ventriculostomy-in-tuberculous-meningitis-with-hydrocephalus
#17
REVIEW
Yad R Yadav, Vijay S Parihar, Mina Todorov, Yatin Kher, Ishwar D Chaurasia, Sonjjay Pande, Hemant Namdev
Hydrocephalus is one of the commonest complications of tuberculous meningitis (TBM). It can be purely obstructive, purely communicating, or due to combinations of obstruction in addition to defective absorption of cerebrospinal fluid (CSF). Endoscopic third ventriculostomy (ETV) as an alternative to shunt procedures is an established treatment for obstructive hydrocephalus in TBM. ETV in TBM hydrocephalus can be technically very difficult, especially in acute stage of disease due to inflamed, thick, and opaque third ventricle floor...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27683801/cell-specific-activation-of-the-nrf2-antioxidant-pathway-increases-mucosal-inflammation-in-acute-but-not-in-chronic-colitis
#18
Alexandra Gerstgrasser, Hassan Melhem, Irina Leonardi, Kirstin Atrott, Matthias Schäfer, Sabine Werner, Gerhard Rogler, Isabelle Frey-Wagner
Background and Aims: The transcription factor Nrf2 is a major modulator of the cellular antioxidant response. Oxidative burst of infiltrating macrophages leads to a massive production of reactive oxygen species in inflamed tissue of inflammatory bowel disease patients. This oxidative burst contributes to tissue destruction and epithelial permeability, but it is also an essential part of the antibacterial defence. We therefore investigated the impact of the Nrf2 orchestrated antioxidant response in both acute and chronic intestinal inflammation...
April 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/27670406/the-role-of-atrial-natriuretic-peptide-to-attenuate-inflammation-in-a-mouse-skin-wound-and-individually-perfused-rat-mesenteric-microvessels
#19
Fitz-Roy E Curry, Joyce F Clark, Yanyan Jiang, Min-Ho Kim, Roger H Adamson, Scott I Simon
We tested the hypothesis that the anti-inflammatory actions of atrial natriuretic peptide (ANP) result from the modulation of leukocyte adhesion to inflamed endothelium and not solely ANP ligation of endothelial receptors to stabilize endothelial barrier function. We measured vascular permeability to albumin and accumulation of fluorescent neutrophils in a full-thickness skin wound on the flank of LysM-EGFP mice 24 h after formation. Vascular permeability in individually perfused rat mesenteric microvessels was also measured after leukocytes were washed out of the vessel lumen...
September 2016: Physiological Reports
https://www.readbyqxmd.com/read/27667696/inflammation-induced-adhesin-receptor-interaction-provides-a-fitness-advantage-to-uropathogenic-e-%C3%A2-coli-during-chronic-infection
#20
Matt S Conover, Ségolène Ruer, Joemar Taganna, Vasilios Kalas, Henri De Greve, Jerome S Pinkner, Karen W Dodson, Han Remaut, Scott J Hultgren
Uropathogenic E. coli (UPEC) is the dominant cause of urinary tract infections, clinically described as cystitis. UPEC express CUP pili, which are extracellular fibers tipped with adhesins that bind mucosal surfaces of the urinary tract. Here we identify the role of the F9/Yde/Fml pilus for UPEC persistence in the inflamed urothelium. The Fml adhesin FmlH binds galactose β1-3 N-acetylgalactosamine found in core-1 and -2 O-glycans. Deletion of fmlH had no effect on UPEC virulence in an acute mouse model of cystitis...
October 12, 2016: Cell Host & Microbe
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