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https://www.readbyqxmd.com/read/28722107/the-peritoneum-healing-immunity-and-diseases
#1
REVIEW
Annalisa Capobianco, Lucia Cottone, Antonella Monno, Angelo A Manfredi, Patrizia Rovere-Querini
The peritoneum defines a confined microenvironment, which is stable under normal conditions, but is exposed to the damaging effect of infections, surgical injuries, and other neoplastic and non-neoplastic events. Its response to damage includes the recruitment, proliferation and activation of a variety of haematopoietic and stromal cells. In physiologic conditions, effective responses to injuries are organized, inflammatory triggers are eliminated, inflammation quickly abates, and the normal tissue architecture is restored...
July 19, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28721450/smad3-and-bmal1-regulate-p21-and-s100a4-expression-in-myocardial-stromal-fibroblasts-via-tnf-%C3%AE
#2
Fuyuki Sato, Akira Kohsaka, Kana Takahashi, Saki Otao, Yusuke Kitada, Yoshiyuki Iwasaki, Yasuteru Muragaki
Bmal1, a clock gene, is associated with depression, hypertrophy, metabolic syndrome and diabetes. Smad3, which is involved in the TGF-β signaling pathway, plays an important role in the regulation of tumor progression, fibrosis, obesity and diabetes. Our previous report showed that Smad3 has circadian expression in mouse livers. In the current study, we focused on the heart, especially on the myocardial stromal fibroblasts because the roles of Bmal1 and Smad3 in this tissue are poorly understood. Bmal1 and Smad3 have circadian expression in mouse hearts, and their circadian expression patterns were similar...
July 18, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28718060/innate-immune-responses-and-osteoarthritis
#3
REVIEW
Evangelia Kalaitzoglou, Timothy M Griffin, Mary Beth Humphrey
PURPOSE OF THE REVIEW: Osteoarthritis (OA) is a chronic, painful joint disease that affects approximately 40% of adults over 70 year. Age is the strongest predictor of OA, while obesity is considered the primary preventable risk factor for OA. Both conditions are associated with abnormal innate immune inflammatory responses that contribute to OA progression and are the focus of this review. RECENT FINDINGS: Recent studies have identified risk factors for OA progression including increased innate immune responses secondary to aging-associated myeloid skewing, obesity-related myeloid activation, and synovial tissue hyperplasia with activated macrophage infiltration...
August 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28718055/early-anti-inflammatory-and-pro-angiogenic-myocardial-effects-of-intravenous-serelaxin-infusion-for-72%C3%A2-h-in-an-experimental-rat-model-of-acute-myocardial-infarction
#4
Jesus Sanchez-Mas, Antonio Lax, Mari C Asensio-Lopez, Miriam Lencina, Maria J Fernandez-Del Palacio, Angela Soriano-Filiu, Rudolf A de Boer, Domingo A Pascual-Figal
Sprague Dawley rats were subjected to acute myocardial infarction (AMI) by permanent ligation of the left anterior descending coronary artery. At the time of AMI, a subcutaneous mini-osmotic pump was implanted and animals were randomized into three groups, according to the intravenous therapy received during the first 72 h: placebo-treated (saline), serelaxin10-treated (SRLX10 = 10 μg/kg/day), or serelaxin30-treated (SRLX30 = 30 μg/kg/day). Treatment with SRLX30 reduced the expression of inflammatory cytokines and chemokines, as well as the infiltration of macrophages, and increased the expression of pro-angiogenic markers and vessel density in the infarcted myocardium after 7 days...
July 17, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28713772/harnessing-neutrophil-survival-mechanisms-during-chronic-infection-by-pseudomonas-aeruginosa-novel-therapeutic-targets-to-dampen-inflammation-in-cystic-fibrosis
#5
REVIEW
Benoît S Marteyn, Pierre-Régis Burgel, Laurent Meijer, Véronique Witko-Sarsat
More than two decades after cloning the cystic fibrosis transmembrane regulator (CFTR) gene, the defective gene in cystic fibrosis (CF), we still do not understand how dysfunction of this ion channel causes lung disease and the tremendous neutrophil burden which persists within the airways; nor why chronic colonization by Pseudomonas aeruginosa develops in CF patients who are thought to be immunocompetent. It appears that the microenvironment within the lung of CF patients provides favorable conditions for both P...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28706969/quantitative-analysis-of-immune-cell-subset-infiltration-of-supraspinatus-muscle-after-severe-rotator-cuff-injury
#6
J R Krieger, L E Tellier, M T Ollukaren, J S Temenoff, E A Botchwey
Rotator cuff tears cause muscle degeneration that is characterized by myofiber atrophy, fatty infiltration, and fibrosis and is minimally responsive to current treatment options. The underlying pathogenesis of rotator cuff muscle degeneration remains to be elucidated, and increasing evidence implicates immune cell infiltration as a significant factor. Because immune cells are comprised of highly heterogeneous subpopulations that exert divergent effects on injured tissue, understanding trafficking and accumulation of immune subpopulations may hold the key to more effective therapies...
June 2017: Regenerative Engineering and Translational Medicine
https://www.readbyqxmd.com/read/28705940/characterisation-of-eppin-function-expression-and-activity-in-the-lung
#7
Aaron Scott, Arlene Glasgow, Donna Small, Simon Carlile, Maelíosa McCrudden, Denise McLean, Ryan Brown, Declan Doherty, Fionnuala T Lundy, Umar I Hamid, Cecilia M O'Kane, Daniel F McAuley, Malcolm Brodlie, Michael Tunney, J Stuart Elborn, Chris R Irwin, David J Timson, Clifford C Taggart, Sinéad Weldon
Eppin is a serine protease inhibitor expressed in male reproductive tissues.The aim of this study was to investigate the localisation and regulation of eppin expression in myeloid and epithelial cell lines, and explore its potential role as a multifunctional host defence protein.Using immunohistochemistry and Western blotting, eppin was detected in the lungs of patients with acute respiratory distress syndrome and cystic fibrosis lung disease. Expression of eppin in monocytic cells was unaffected by stimulation with Toll-like receptor agonists, cytokines and hormone receptor agonists...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28705316/cell-specific-pathways-supporting-persistent-fibrosis-in-heart-failure
#8
Stephen D Farris, Creighton Don, Deri Helterline, Christopher Costa, Tabitha Plummer, Susanne Steffes, Claudius Mahr, Nahush A Mokadam, April Stempien-Otero
BACKGROUND: Only limited data exist describing the histologic and noncardiomyocyte function of human myocardium in end-stage heart failure (HF). OBJECTIVES: The authors sought to determine changes in noncardiomyocyte cellular activity in patients with end-stage HF after left ventricular assist device (LVAD)-induced remodeling to identify mechanisms impeding recovery. METHODS: Myocardium was obtained from subjects undergoing LVAD placement and/or heart transplantation...
July 18, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28704922/transcriptome-differences-in-porcine-alveolar-macrophages-from-tongcheng-and-large-white-pigs-in-response-to-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-infection
#9
Wan Liang, Likai Ji, Yu Zhang, Yueran Zhen, Qingde Zhang, Xuewen Xu, Bang Liu
Porcine reproductive and respiratory syndrome virus (PRRSV) is a single-stranded positive-sense RNA virus that can cause devastating reproductive failure and respiratory tract lesions, which has led to serious damage to the swine industry worldwide. Our previous studies have indicated that Tongcheng (TC) pigs, a Chinese local breed, have stronger resistance or tolerance to PRRSV infection than Large White (LW) pigs. This study aims to investigate their host transcriptome differences in porcine alveolar macrophages (PAMs) at 7 days post challenge...
July 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28703808/rip3-attenuates-the-pancreatic-damage-induced-by-deletion-of-atg7
#10
Xiaodong Zhou, Li Xie, Leizhou Xia, Frank Bergmann, Markus W Büchler, Guido Kroemer, Thilo Hackert, Franco Fortunato
Invalidation of pancreatic autophagy entails pancreatic atrophy, endocrine and exocrine insufficiency and pancreatitis. The aim of this study was to investigate whether depletion of Rip3, which is involved in necroptotic signaling, may attenuate the pancreatic atrophy and pancreatitis resulting from autophagy inhibition. Autophagy and necroptosis signaling were evaluated in mice lacking expression of Rip3 in all organs and Atg7 in the pancreas. Acinar cell death, inflammation and fibrosis were evaluated by using of a compendium of immunofluorescence methods and immunoblots...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28702876/cardiovascular-histopathology-of-a-11-year-old-with-mucopolysaccharidosis-vii-demonstrates-fibrosis-macrophage-infiltration-and-arterial-luminal-stenosis
#11
Valerie Lew, Louis Pena, Robert Edwards, Raymond Y Wang
Mucopolysaccharidosis type VII (MPS VII) is caused by β-glucuronidase deficiency, resulting in lysosomal accumulation of glycosaminoglycans (GAGs) and multisystemic disease. We present cardiovascular gross and histopathology findings from a 11-year-old MPS VII male, who expired after developing ventricular fibrillation following anesthesia induction. Gross anatomic observations were made at autopsy; postmortem formalin-fixed paraffin-embedded samples of the carotid artery, aorta, myocardium, and valves were sectioned and stained with hematoxylin-eosin, Verhoeff-Van Gieson, CD68, and trichrome stains...
July 13, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28701510/immunomodulatory-molecule-irak-m-balances-macrophage-polarization-and-determines-macrophage-responses-during-renal-fibrosis
#12
Stefanie Steiger, Santhosh V Kumar, Mohsen Honarpisheh, Georg Lorenz, Roman Günthner, Simone Romoli, Regina Gröbmayr, Heni-Eka Susanti, Jan Potempa, Joanna Koziel, Maciej Lech
Activation of various innate immune receptors results in IL-1 receptor-associated kinase (IRAK)-1/IRAK-4-mediated signaling and secretion of proinflammatory cytokines such as IL-12, IL-6, or TNF-α, all of which are implicated in tissue injury and elevated during tissue remodeling processes. IRAK-M, also known as IRAK-3, is an inhibitor of proinflammatory cytokine and chemokine expression in intrarenal macrophages. Innate immune activation contributes to both acute kidney injury and tissue remodeling that is associated with chronic kidney disease (CKD)...
July 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28701304/hif1a-up-regulates-the-adora2b-receptor-on-alternatively-activated-macrophages-and-contributes-to-pulmonary-fibrosis
#13
Kemly Philip, Tingting Weng Mills, Jonathan Davies, Ning-Yuan Chen, Harry Karmouty-Quintana, Fayong Luo, Jose G Molina, Javier Amione-Guerra, Neeraj Sinha, Ashrith Guha, Holger K Eltzschig, Michael R Blackburn
Idiopathic pulmonary fibrosis (IPF) is a deadly chronic lung disease. Extracellular accumulation of adenosine and subsequent activation of the ADORA2B receptor play important roles in regulating inflammation and fibrosis in IPF. Additionally, alternatively activated macrophages (AAMs) expressing ADORA2B have been implicated in mediating adenosine's effects in IPF. Although hypoxic conditions are present in IPF, hypoxia's role as a direct modulator of macrophage phenotype and identification of factors that regulate ADORA2B expression on AAMs in IPF is not well understood...
July 12, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28700904/inhibition-of-high-glucose-induced-inflammation-and-fibrosis-by-a-novel-curcumin-derivative-prevents-renal-and-heart-injury-in-diabetic-mice
#14
Hongjin Chen, Xi Yang, Kongqin Lu, Chun Lu, Yunjie Zhao, Suqing Zheng, Jieli Li, Zhangjian Huang, Yi Huang, Yali Zhang, Guang Liang
Hyperglycemia-induced inflammation and fibrosis have important roles in the pathogenesis of diabetic nephropathy and cardiomyopathy. With inflammatory cytokines and signaling pathways as important mediators, targeting inflammation may be an effective approach to new avenue for treating diabetic complications. J17, a molecule with structural similarities to curcumin, exhibited good anti-inflammatory activities by inhibiting LPS-induced inflammatory response in macrophages. However, its ability to alleviate hyperglycemia-induced injury via its anti-inflammatory actions remained unclear...
July 9, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28697727/intermedin-attenuates-renal-fibrosis-by-induction-of-heme-oxygenase-1-in-rats-with-unilateral-ureteral-obstruction
#15
Xi Qiao, Lihua Wang, Yanhong Wang, Xiaole Su, Yufeng Qiao, Yun Fan, Zhiqiang Peng
BACKGROUND: Intermedin [IMD, adrenomedullin-2 (ADM-2)] attenuates renal fibrosis by inhibition of oxidative stress. However, the precise mechanisms remain unknown. Heme oxygenase-1 (HO-1), an antioxidant agent, is associated with antifibrogenic effects. ADM is known to induce HO-1. Whether IMD has any effect on HO-1 is unclear. Herein, we determined whether the antifibrotic properties of IMD are mediated by induction of HO-1. METHODS: Renal fibrosis was induced by unilateral ureteral obstruction (UUO) performed on male Wistar rats...
July 11, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28694385/monocyte-derived-alveolar-macrophages-drive-lung-fibrosis-and-persist-in-the-lung-over-the-life-span
#16
Alexander V Misharin, Luisa Morales-Nebreda, Paul A Reyfman, Carla M Cuda, James M Walter, Alexandra C McQuattie-Pimentel, Ching-I Chen, Kishore R Anekalla, Nikita Joshi, Kinola J N Williams, Hiam Abdala-Valencia, Tyrone J Yacoub, Monica Chi, Stephen Chiu, Francisco J Gonzalez-Gonzalez, Khalilah Gates, Anna P Lam, Trevor T Nicholson, Philip J Homan, Saul Soberanes, Salina Dominguez, Vince K Morgan, Rana Saber, Alexander Shaffer, Monique Hinchcliff, Stacy A Marshall, Ankit Bharat, Sergejs Berdnikovs, Sangeeta M Bhorade, Elizabeth T Bartom, Richard I Morimoto, William E Balch, Jacob I Sznajder, Navdeep S Chandel, Gökhan M Mutlu, Manu Jain, Cara J Gottardi, Benjamin D Singer, Karen M Ridge, Neda Bagheri, Ali Shilatifard, G R Scott Budinger, Harris Perlman
Little is known about the relative importance of monocyte and tissue-resident macrophages in the development of lung fibrosis. We show that specific genetic deletion of monocyte-derived alveolar macrophages after their recruitment to the lung ameliorated lung fibrosis, whereas tissue-resident alveolar macrophages did not contribute to fibrosis. Using transcriptomic profiling of flow-sorted cells, we found that monocyte to alveolar macrophage differentiation unfolds continuously over the course of fibrosis and its resolution...
July 10, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28692738/inhibition-of-monocyte-chemoattractant-protein-1-prevents-conjunctival-fibrosis-in-an-experimental-model-of-glaucoma-filtration-surgery
#17
Rachel Shujuan Chong, Ying Shi Lee, Stephanie Wai Ling Chu, Li Zhen Toh, Tina Tzee Ling Wong
Purpose: To evaluate the effect of treatment with monocyte chemoattractant protein-1 receptor inhibitor (MCP-Ri) to maintain bleb survival and prevent fibrosis in an experimental model of glaucoma filtration surgery (GFS). Methods: GFS was performed on one eye of C57/Bl6 mice (n = 36) that was treated with MCP-Ri, mitomycin-C (MMC), or vehicle at the time of surgery. Real-time polymerase chain reaction was used to evaluate conjunctival expression of monocyte chemoattractant protein-1 (MCP-1), TGFB1, TGFB2, collagen 1a1 (Col1a1), sparc (Sparc), and fibronectin at 2 and 7 days following surgery...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28692538/metabolic-syndrome-and-obesity-are-the-cornerstones-of-liver-fibrosis-in-hiv-monoinfected-patients-results-of-the-metafib-study
#18
Maud Lemoine, Karine Lacombe, Jean Philippe Bastard, Manuela Sébire, Laurent Fonquernie, Nadia Valin, Soraya Fellahi, Jacqueline Capeau, Pierre-Marie Girard, Jean-Luc Meynard
BACKGROUND: Metabolic syndrome (MetS) and nonalcoholic fatty liver disease (NAFLD) have become a common finding in HIV-infected patients. However, the severity, risk factors and pathogenesis of liver fibrosis in this population have been poorly documented. OBJECTIVES: to assess the impact of MetS on liver fibrosis and analyze the association between MetS, liver fibrosis and markers of adipose tissue and macrophage activation. METHODS: In a matched cohort of HIV-1-monoinfected patients with and without MetS, after exclusion of other causes of liver disease, we assessed liver stiffness measurement (LSM) and measured levels of serum adipokines, HOMA index and soluble CD163 and CD14 as markers of fat, insulin resistance and macrophage/monocyte activation, respectively...
July 7, 2017: AIDS
https://www.readbyqxmd.com/read/28689212/coal-mine-dust-desquamative-chronic-interstitial-pneumonia-a-precursor-of-dust-related-diffuse-fibrosis-and-of-emphysema
#19
Tomislav M Jelic, Oscar C Estalilla, Phyllis R Sawyer-Kaplan, Milton J Plata, Jeremy T Powers, Mary Emmett, John T Kuenstner
BACKGROUND: Diseases associated with coal mine dust continue to affect coal miners. Elucidation of initial pathological changes as a precursor of coal dust-related diffuse fibrosis and emphysema, may have a role in treatment and prevention. OBJECTIVE: To identify the precursor of dust-related diffuse fibrosis and emphysema. METHODS: Birefringent silica/silicate particles were counted by standard microscope under polarized light in the alveolar macrophages and fibrous tissue in 25 consecutive autopsy cases of complicated coal worker's pneumoconiosis and in 21 patients with tobacco-related respiratory bronchiolitis...
July 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28687632/increased-levels-of-gab1-and-gab2-adaptor-proteins-skew-il-4-signaling-toward-m2-macrophage-driven-pulmonary-fibrosis-in-mice
#20
Xiaohong Guo, Tingting Li, Yun Xu, Xiayan Xu, Zhengyi Zhu, Yun Zhang, Jiaqi Xu, Kaihong Xu, Hongqiang Cheng, Xue Zhang, Yuehai Ke
M2-polarized macrophages, also known as alternatively activated macrophages, have long been associated with pulmonary fibrosis; however, the mechanism has not been fully defined. Gab1 and Gab2 proteins belong to the GAB family of adaptors and are integral components of the signal specificity in response to various extracellular stimuli. In this report, we found that levels of both Gab1 and Gab2 were elevated in M2-polarized macrophages isolated from bleomycin-induced fibrotic lungs. In vitro Gab1/2 deficiency in bone marrow-derived macrophages abrogated IL-4-mediated M2 polarization...
July 7, 2017: Journal of Biological Chemistry
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