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Chronic inflammation

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https://www.readbyqxmd.com/read/28749599/heat-induced-inflammation-and-its-role-in-esophageal-cancer
#1
REVIEW
Mohaddese Maghsudlu, Ehsan Farashahi Yazd
Esophageal cancer as the sixth common cause of cancer death in the world consists of different histological types with various incidence patterns. Among them, esophageal adenocarcinoma and esophageal squamous cell carcinoma are the most prevalent types which also have different causality, cell of origin and risk factors. Since epidemiological studies have announced consumption of hot substances as one of the major risk factors for squamous cell carcinoma, evaluating the effect of this external stress on esophagus cells seems desirable...
July 27, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28749079/recuperating-lung-decoction-attenuates-inflammation-and-oxidation-in-cigarette-smoke-induced-copd-in-rats-via-activation-of-erk-and-nrf2-pathways
#2
Chunlei Li, Yue Yan, Qi Shi, Yanhua Kong, Longxia Gao, Haipeng Bao, Youlin Li
Oxidative/antioxidative imbalance and chronic inflammation are the main contributors to the pathogenesis of chronic obstructive pulmonary disease (COPD). This study evaluated the effect of recuperating lung decoction (RLD) on inflammation and oxidative stress in rats with COPD induced by cigarette smoke and lipopolysaccharides (LPS). We used intravenous infusion of LPS combined with cigarette smoke exposure as a COPD rat model. We observed that RLD treatment increased the protein level of GSH and the ratio of GSH/GSSG but decreased 8-OHdG and 4-HNE in the serum...
July 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28748646/small-airway-dysfunction-in-chronic-hypersensitivity-pneumonitis
#3
Selene Guerrero Zúñiga, Julia Sánchez Hernández, Heidegger Mateos Toledo, Mayra Mejía Ávila, Laura Gochicoa-Rangel, José Luis Miguel Reyes, Moisés Selman, Luis Torre-Bouscoulet
BACKGROUND AND OBJECTIVE: Lung biopsies from patients with hypersensitivity pneumonitis (HP) have demonstrated small airway (SA) involvement, but there is no information concerning SA function in HP, and it is unknown whether pharmacological treatment could modify its function. SA function in patients with chronic HP using ultrasonic pneumography (UPG) and impulse oscillometry (IOS) was explored. We also compared initial results with those obtained after 4 weeks of standardized treatment with azathioprine and prednisone...
July 26, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28748515/tumor-necrosis-factor-%C3%AE-308-polymorphism-in-north-indian-rheumatoid-arthritis-patients-and-association-with-mrna-and-serum-tnf-%C3%AE
#4
Mohd Jahid, Rehan-Ul-Haq, Puja Kumari Jha, Diwesh Chawla, Rajnish Avasthi, Rafat Sultana Ahmed
Rheumatoid arthritis (RA) is a severely disabling chronic autoimmune disorder that leads to progressive inflammation of the joints and surrounding tissues. TNF-α, a potent proinflammatory cytokine, plays a pivotal role in the pathogenesis of RA. The endogenous formation of TNF-α may be influenced by TNF-α promoter polymorphisms. Hence, the present study was designed to explore any possible association between genetic polymorphism of TNF-α -308 G/A, messenger RNA (mRNA) expression, serum levels of TNF-α, and inflammatory markers in North Indian RA patients...
July 27, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28748390/mir-27b-3p-mir-181a-1-3p-and-mir-326-5p-are%C3%A2-involved-in-the-inhibition-of-macrophage-activation-in-chronic-liver-injury
#5
Weiyang Li, Na Chang, Lei Tian, Jingjing Yang, Xiaofang Ji, Jieshi Xie, Lin Yang, Liying Li
Macrophages are central players in inflammation, which leads to liver injury. It has been reported that continuous macrophage activation initiates this process. Our previous data show that the anti-inflammatory factor, 15-deoxy-Δ(12, 14)-prostaglandin J2 (15d-PGJ2), inhibits bone marrow (BM)-derived macrophage (BMM) migration and inflammatory cytokine production. However, the underlying mechanism of 15d-PGJ2 inhibited BMM activation is still unclear. Here, we evaluate the role of 15d-PGJ2/PPARγ axis in BMM activation...
July 26, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28748360/autophagy-and-inflammation
#6
REVIEW
Mengjia Qian, Xiaocong Fang, Xiangdong Wang
Autophagy is a homeostatic mechanism involved in the disposal of damaged organelles, denatured proteins as well as invaded pathogens through a lysosomal degradation pathway. Recently, increasing evidences have demonstrated its role in both innate and adaptive immunity, and thereby influence the pathogenesis of inflammatory diseases. The detection of autophagy machinery facilitated the measurement of autophagy during physiological and pathophysiological processes. Autophagy plays critical roles in inflammation through influencing the development, homeostasis and survival of inflammatory cells, including macrophages, neutrophils and lymphocytes; effecting the transcription, processing and secretion of a number of cytokines, as well as being regulated by cytokines...
December 2017: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/28748184/complement-in-non-antibody-mediated-kidney-diseases
#7
REVIEW
Andrea Angeletti, Joselyn Reyes-Bahamonde, Paolo Cravedi, Kirk N Campbell
The complement system is part of the innate immune response that plays important roles in protecting the host from foreign pathogens. The complement components and relative fragment deposition have long been recognized to be strongly involved also in the pathogenesis of autoantibody-related kidney glomerulopathies, leading to direct glomerular injury and recruitment of infiltrating inflammation pathways. More recently, unregulated complement activation has been shown to be associated with progression of non-antibody-mediated kidney diseases, including focal segmental glomerulosclerosis, C3 glomerular disease, thrombotic microangiopathies, or general fibrosis generation in progressive chronic kidney diseases...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28747971/pine-bark-extract-pycnogenol%C3%A2-suppresses-cigarette-smoke-induced-fibrotic-response-via-transforming-growth-factor-%C3%AE-1-smad-family-member-2-3-signaling
#8
Je-Won Ko, Na-Rae Shin, Sung-Hyeuk Park, Joong-Sun Kim, Young-Kwon Cho, Jong-Choon Kim, In-Sik Shin, Dong-Ho Shin
Chronic obstructive pulmonary diseases (COPD) is an important disease featured as intense inflammation, protease imbalance, and air flow limitation and mainly induced by cigarette smoke (CS). In present study, we explored the effects of Pycnogenol® (PYC, pine bark extract) on pulmonary fibrosis caused by CS+lipopolysaccharide (LPS) exposure. Mice were treated with LPS intranasally on day 12 and 26, followed by CS exposure for 1 h/day (8 cigarettes per day) for 4 weeks. One hour before CS exposure, 10 and 20 mg/kg of PYC were administered by oral gavage for 4 weeks...
June 2017: Laboratory Animal Research
https://www.readbyqxmd.com/read/28747957/acn9-regulates-the-inflammatory-responses-in-human-bronchial-epithelial-cells
#9
Jae Hoon Jeong, Jeeyoung Kim, Jeongwoon Kim, Hye-Ryeon Heo, Jin Seon Jeong, Young-Joon Ryu, Yoonki Hong, Seon-Sook Han, Seok-Ho Hong, Seung-Joon Lee, Woo Jin Kim
BACKGROUND: Airway epithelial cells are the first line of defense, against pathogens and environmental pollutants, in the lungs. Cellular stress by cadmium (Cd), resulting in airway inflammation, is assumed to be directly involved in tissue injury, linked to the development of lung cancer, and chronic obstructive pulmonary disease (COPD). We had earlier shown that ACN9 (chromosome 7q21), is a potential candidate gene for COPD, and identified significant interaction with smoking, based on genetic studies...
July 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28747725/echinomycin-inhibits-adipogenesis-in-3t3-l1-cells-in-a-hif-independent-manner
#10
Junna Yamaguchi, Tetsuhiro Tanaka, Hisako Saito, Seitaro Nomura, Hiroyuki Aburatani, Hironori Waki, Takashi Kadowaki, Masaomi Nangaku
Obesity is a risk factor for many diseases including diabetes, cancer, cardiovascular disease, and chronic kidney disease. Obesity is characterized by the expansion of white adipose tissue (WAT). Hypertrophy and hyperplasia of adipocytes cause tissue hypoxia followed by inflammation and fibrosis. Its trigger, preadipocyte differentiation into mature adipocytes, is finely regulated by transcription factors, signal molecules, and cofactors. We found that echinomycin, a potent HIF-1 inhibitor, completely inhibited adipogenesis in 3T3-L1 WAT preadipocytes by affecting the early phase of mitotic clonal expansion...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747638/puma-gene-delivery-to-synoviocytes-reduces-inflammation-and-degeneration-of-arthritic-joints
#11
Saw-See Hong, Hubert Marotte, Guillaume Courbon, Gary S Firestein, Pierre Boulanger, Pierre Miossec
In rheumatoid arthritis (RA), the proliferation of fibroblast-like synoviocytes (FLS) is the cause of chronic inflammation in joints and of joint damage. Delivery of the pro-apoptotic gene PUMA to FLS via human adenovirus type 5 (HAdV5) vectors has been tested as a therapeutic approach, but efficiency is hampered by low transduction, as FLS do not express HAdV5 receptors on the cell surface. Here we show that efficient transduction of PUMA in FLS can be achieved by conjugating HAdV5 to a baculovirus, which binds to the cell surface via the envelope glycoprotein Gp64...
July 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28747511/autologous-minced-muscle-grafts-improve-endogenous-fracture-healing-and-muscle-strength-after-musculoskeletal-trauma
#12
Brady J Hurtgen, Catherine L Ward, Chrissy M Leopold Wager, Koyal Garg, Stephen M Goldman, Beth E P Henderson, Todd O McKinley, Sarah M Greising, Joseph C Wenke, Benjamin T Corona
The deleterious impact of concomitant muscle injury on fracture healing and limb function is commonly considered part of the natural sequela of orthopedic trauma. Recent reports suggest that heightened inflammation in the surrounding traumatized musculature is a primary determinant of fracture healing. Relatedly, there are emerging potential therapeutic approaches for severe muscle trauma (e.g., volumetric muscle loss [VML] injury), such as autologous minced muscle grafts (1 mm(3) pieces of muscle; GRAFT), that can partially prevent chronic functional deficits and appear to have an immunomodulatory effect within VML injured muscle...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28747508/mutations-in-the-e2-glycoprotein-and-the-3-untranslated-region-enhance-chikungunya-virus-virulence-in-mice
#13
David W Hawman, Kathryn S Carpentier, Julie M Fox, Nicholas A May, Wes Sanders, Stephanie A Montgomery, Nathaniel J Moorman, Michael S Diamond, Thomas E Morrison
Chikungunya virus (CHIKV) is a mosquito-transmitted alphavirus that causes debilitating musculoskeletal pain and inflammation and can persist for months to years after acute infection. Although studies in humans and experimentally-infected animals suggest that CHIKV infection persists in musculoskeletal tissues, the mechanisms for this remain poorly understood. To evaluate this further, we isolated CHIKV from the serum of persistently infected Rag1(-/-) mice at day 28. When inoculated into naïve WT mice, this persistently circulating CHIKV strain displayed a capacity for earlier dissemination and greater pathogenicity compared with the parental virus...
July 26, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28747346/modulation-of-roquin-function-in-myeloid-cells-reduces-mycobacterium-tuberculosis-induced-inflammation
#14
Gayathri Nagalingam, Carola G Vinuesa, Warwick J Britton, Bernadette M Saunders
Damaging inflammation is a hallmark of Mycobacterium tuberculosis infection, and understanding how this is regulated is important for the development of new therapies to limit excessive inflammation. The E3 ubiquitin ligase, Roquin, is involved in immune regulation; however, its role in immunity to M. tuberculosis is unknown. To address this, we infected mice with a point mutation in Roquin1/Rc3h1 (sanroque). Aerosol-infected sanroque mice showed enhanced control of M. tuberculosis infection associated with delayed bacterial dissemination and upregulated TNF production in the lungs after 2 wk...
July 26, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28747340/epithelial-tnf-receptor-signaling-promotes-mucosal-repair-in-inflammatory-bowel-disease
#15
Emily M Bradford, Stacy H Ryu, Ajay Pal Singh, Goo Lee, Tatiana Goretsky, Preetika Sinh, David B Williams, Amber L Cloud, Elias Gounaris, Vihang Patel, Olivia F Lamping, Evan B Lynch, Mary Pat Moyer, Isabelle G De Plaen, David J Shealy, Guang-Yu Yang, Terrence A Barrett
TNF plays an integral role in inflammatory bowel disease (IBD), as evidenced by the dramatic therapeutic responses in Crohn's disease (CD) patients induced by chimeric anti-TNF mAbs. However, treatment of CD patients with etanercept, a decoy receptor that binds soluble TNF, fails to improve disease. To explore this discrepancy, we investigated the role of TNF signaling in Wnt/β-catenin-mediated intestinal stem cell and progenitor cell expansion in CD patients, human cells, and preclinical mouse models. We hypothesized that TNF exerts beneficial effects on intestinal epithelial cell (IEC) responses to injury...
July 26, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28747175/cd133-cells-are-associated-with-adipocytokines-and-endothelial-dysfunction-in-hemodialysis-patients
#16
Abdullah Ozkok, Riza Atas, Suzan Adin Cinar, Akar Yilmaz, Esin Aktas, Gunnur Deniz, Alaattin Yildiz
BACKGROUND: Hemodialysis (HD) patients have increased risk of cardiovascular disease (CVD). Impaired stem cell health and adipocytokine metabolism may play important roles in the complex pathophysiological mechanisms of CVD in this patient population. We aimed to investigate the relationships between CD133+ cell counts, adipocytokines and parameters of endothelial dysfunction and atherosclerosis in HD patients. METHODS: In 58 chronic HD patients (male/female:28/30, mean age:58 ± 14 years), serum levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), leptin, adiponectin and resistin were measured by ELISA...
July 26, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28747011/bioconversion-of-scutellaria-baicalensis-extract-can-increase-recovery-of-auditory-function-in-a-mouse-model-of-noise-induced-hearing-loss
#17
Isabel Rodriguez, Bin Na Hong, Youn Hee Nam, Eun Young Kim, Geun Ha Park, Min Gun Ji, Tong Ho Kang
In noise-induced hearing loss (NIHL), noise exposure damages cochlear sensory hair cells, which lack the capacity to regenerate. Following noise insult, intense metabolic activity occurs, resulting in a cochlear free radical imbalance. Oxidative stress and antioxidant enzyme alterations, including lipoxygenase upregulation, have been linked to chronic inflammation, which contributes to hearing impairment. We previously proposed Scutellaria baicalensis (SB) extract as an alternative therapeutic for preventing NIHL and attributed its pharmacological effects to baicalein...
July 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28746889/molecular-recognition-between-potential-natural-inhibitors-of-the-keap1-nrf2-complex
#18
Martiniano Bello, José Antonio Morales-González
Disrupting the Keap1-Nrf2 pathway enhances Nrf2 activity, which has been identified as an important approach for the prevention of different chronic diseases in which oxidative stress and inflammation are present, such as cancer, diabetes, Alzheimer's and Parkinson's. Based on the high potential to modulate antioxidant, anti-inflammatory and anticancer properties that the discovery of Keap1-Nrf2 protein-protein interaction inhibitors would represent, the utilization of some natural compounds has emerged as a promising strategy to identify new drugs...
July 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28746820/the-role-of-damps-and-pamps-in-inflammation-mediated-vulnerability-of-atherosclerotic-plaques
#19
Vikrant Rai, Devendra K Agrawal
Atherosclerosis is a chronic inflammatory disease resulting in the formation of the atherosclerotic plaque. Plaque formation starts with the inflammation in fatty streak and progress through atheroma, atheromatous plaque, and fibroatheroma leading to development of stable plaque. Hypercholesterolemia, dyslipidemia, hyperglycemia are the risk factors for atherosclerosis. Inflammation, infection with viruses and bacteria, and dysregulation in the endothelial and vascular smooth muscle cells leads to advanced plaque formation...
July 26, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28746467/tangeretin-has-anti-asthmatic-effects-via-regulating-pi3k-and-notch-signaling-and-modulating-th1-th2-th17-cytokine-balance-in-neonatal-asthmatic-mice
#20
L-L Liu, F-H Li, Y Zhang, X-F Zhang, J Yang
Asthma is a chronic allergic disease characterized by airway inflammation, airway hyper-responsiveness (AHR), and mucus hypersecretion. T-lymphocytes are involved in the pathogenesis of asthma, mediating airway inflammatory reactions by secreting cytokines. The phosphoinositide 3-kinase (PI3K) and Notch signaling pathways are associated with T cell signaling, proliferation, and differentiation, and are important in the progression of asthma. Thus, compounds that can modulate T cell proliferation and function may be of clinical value...
July 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
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