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https://www.readbyqxmd.com/read/28231341/identification-of-the-er-resident-e3-ubiquitin-ligase-rnf145-as-a-novel-lxr-regulated-gene
#1
Emma C L Cook, Jessica K Nelson, Vincenzo Sorrentino, Duco Koenis, Martina Moeton, Saskia Scheij, Roelof Ottenhoff, Boris Bleijlevens, Anke Loregger, Noam Zelcer
Cellular cholesterol metabolism is subject to tight regulation to maintain adequate levels of this central lipid molecule. Herein, the sterol-responsive Liver X Receptors (LXRs) play an important role owing to their ability to reduce cellular cholesterol load. In this context, identifying the full set of LXR-regulated genes will contribute to our understanding of their role in cholesterol metabolism. Using global transcriptional analysis we report here the identification of RNF145 as an LXR-regulated target gene...
2017: PloS One
https://www.readbyqxmd.com/read/28230708/cell-derived-nanoparticles-are-endogenous-modulators-of-sepsis-with-therapeutic-potential
#2
Natalia Kunz, Brent T Xia, Kai-Uwe Kalies, Matthias Klinger, Timo Gemoll, Jens K Habermann, Brynne E Whitacre, Aaron P Seitz, Kathrin Kalies, Charles C Caldwell
Cell-derived nanoparticles (CDNPs) containing cytosolic proteins and RNAs/DNAs can be isolated from stressed eukaryotic cells. Previously, CDNPs isolated from cultured cells exerted immunomodulatory activities in different infections. Here, we sought to elucidate the role of CDNPs using a murine model of cecal ligation and puncture (CLP). We hypothesized that CDNPs influence the immune response at the site of infection, where severe cellular stress occurs. We observed early CDNP accumulation in the peritoneum after 4 h and continued CDNP presence 24 h after CLP...
February 22, 2017: Shock
https://www.readbyqxmd.com/read/28225075/soya-cerebroside-an-extract-of-cordyceps-militaris-suppresses-monocyte-migration-and-prevents-cartilage-degradation-in-inflammatory-animal-models
#3
Shan-Chi Liu, Ching-Peng Chiu, Chun-Hao Tsai, Chun-Yin Hung, Te-Mao Li, Yang-Chang Wu, Chih-Hsin Tang
Pathophysiological events that modulate the progression of structural changes in osteoarthritis (OA) include the secretion of inflammatory molecules, such as proinflammatory cytokines. Interleukin-1beta (IL-1β) is the prototypical inflammatory cytokine that activates OA synovial cells to release cytokines and chemokines in support of the inflammatory response. The monocyte chemoattractant protein-1 (MCP-1/CCL2) is one of the key chemokines that regulate migration and infiltration of monocytes in response to inflammation...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223253/development-and-characterization-of-mouse-monoclonal-antibodies-reactive-with-chicken-cxcli2
#4
Woo H Kim, Hyun S Lillehoj, Yeasul Lim, Wongi Min, Yvonne B Sullivan, Laura Kakach, Joanna W LaBresh
Interleukin-8(IL-8)/CXCL8 is a CXC-family chemokine attracts lymphocytes to sites of tissue damage and plays a role in the inflammatory response and wound healing. Chicken chemotactic and angiogenic factor was referred to as chCXCLi2 and has been studied as one of human CXCL8 homologue for more than 20 years. However, no monoclonal antibodies (mAbs) that specifically detect chCXCLi2 have been developed. Here, we developed and characterized mouse mAbs against chCXCLi2 to define its immunological properties. Two mouse mAbs against chCXCLi2 were generated and confirmed to display specific binding with not only recombinants, but endogenous chCXCLi2 by Western blot analysis, ELISA, and immunocytochemistry...
February 18, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28223108/tenascin-c-is-a-prognostic-determinant-and-potential-cancer-associated-fibroblasts-marker-for-breast-ductal-carcinoma
#5
Zhaoting Yang, Weidong Ni, Chunai Cui, Longyun Fang, Yanhua Xuan
Tenascin C (TNC) is a key of extracellular matrix glycoprotein and highly express in numerous human malignancies. Herein, we attempted to clarify the clinicopathological significance of TNC as a prognostic determinant of breast ductal carcinoma. Then, we investigated TNC immunohistochemical expression in 150 breast ductal carcinomas and 27 normal breast tissue samples. Clinical relevance of TNC expression and the association TNC expression with other factors related to cancer-associated fibroblasts were also examined...
February 18, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28220834/stellera-chamaejasme-and-its-constituents-induce-cutaneous-wound-healing-and-anti-inflammatory-activities
#6
Myungsuk Kim, Hee Ju Lee, Ahmad Randy, Ji Ho Yun, Sang-Rok Oh, Chu Won Nho
Stellera chamaejasme L. (Thymelaeaceae) is a perennial herb that is widely used in traditional Chinese medicine to treat tumours, tuberculosis and psoriasis. S. chamaejasme extract (SCE) possesses anti-inflammatory, analgesic and wound healing activities; however, the effect of S. chamaejasme and its active compounds on cutaneous wound healing has not been investigated. We assessed full-thickness wounds of Sprague-Dawley (SD) rats and topically applied SCE for 2 weeks. In vitro studies were performed using HaCaT keratinocytes, Hs68 dermal fibroblasts and RAW 264...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220813/foxo1-expression-in-keratinocytes-promotes-connective-tissue-healing
#7
Chenying Zhang, Jason Lim, Jian Liu, Bhaskar Ponugoti, Sarah Alsadun, Chen Tian, Rameen Vafa, Dana T Graves
Wound healing is complex and highly orchestrated. It is well appreciated that leukocytes, particularly macrophages, are essential for inducing the formation of new connective tissue, which requires the generation of signals that stimulate mesenchymal stem cells (MSC), myofibroblasts and fibroblasts. A key role for keratinocytes in this complex process has yet to be established. To this end, we investigated possible involvement of keratinocytes in connective tissue healing. By lineage-specific deletion of the forkhead box-O 1 (FOXO1) transcription factor, we demonstrate for the first time that keratinocytes regulate proliferation of fibroblasts and MSCs, formation of myofibroblasts and production of collagen matrix in wound healing...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220405/altered-cellular-homeostasis-in-murine-mps-i-fibroblasts-evidence-of-cell-specific-physiopathology
#8
Gustavo Monteiro Viana, Cinthia Castro do Nascimento, Edgar Julian Paredes-Gamero, Vânia D'Almeida
Mucopolysaccharidosis type I (MPS I), a rare autosomal recessive disease, is caused by a deficiency of the lysosomal enzyme alfa-L-iduronidase. Impaired enzyme activity promotes glycosaminoglycans accumulation in several tissues and organs, leading to complex multisystemic complications. Several studies using animal models indicated different intracellular pathways involving MPS I physiopathology; however, the exact mechanisms underlying this syndrome are still not understood. Previous results from our group showed alterations in ionic homeostasis and cell viability of splenocytes and macrophages in Idua-/- mice...
February 21, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28210941/b-lymphocytes-in-renal-interstitial-fibrosis
#9
REVIEW
Fengge Zhu, Xueyuan Bai, Xiangmei Chen
Fibrosis is defined as an excessive deposition of extracellular matrix (ECM), which leads to the destruction of organ structure and impairment of organ function. Fibrosis occurs not only in kidney but also in lung, liver, heart, and skin. Common pathways of fibrosis are thought to exist. Renal interstitial fibrosis is a complex process that involves multiple molecular signaling and multiple cellular components, in which B cells appear to be one of the emerging important players. B cells may affect fibrosis through cytokine production and through interaction with other cells including fibroblasts, macrophages and T cells...
February 16, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28209630/inhibition-of-phosphodiesterase-4-pde4-reduces-dermal-fibrosis-by-interfering-with-the-release-of-interleukin-6-from-m2-macrophages
#10
Christiane Maier, Andreas Ramming, Christina Bergmann, Rita Weinkam, Nicolai Kittan, Georg Schett, Jörg H W Distler, Christian Beyer
OBJECTIVES: To investigate the disease-modifying effects of phosphodiesterase 4 (PDE4) inhibition in preclinical models of systemic sclerosis (SSc). METHODS: We studied the effects of PDE4 inhibition in a prevention and a treatment model of bleomycin-induced skin fibrosis, in the topoisomerase mouse model as well as in a model of sclerodermatous chronic graft-versus-host disease. To better understand the mode of action of PDE4 blockade in preclinical models of SSc, we investigated fibrosis-relevant mediators in fibroblasts and macrophages from healthy individuals and patients suffering from diffuse-cutaneous SSc on blockade of PDE4...
February 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28193608/dectin-2-deficiency-modulates-th1-differentiation-and-improves-wound-healing-after-myocardial-infarction
#11
Xiaoxiang Yan, Hang Zhang, Qin Fan, Jian Hu, Rong Tao, Qiujing Chen, Yoichiro Iwakura, Weifeng Shen, Lin Lu, Qi Zhang, Ruiyan Zhang
Rationale: Macrophages are involved in wound healing after myocardial infarction (MI). The role of Dectin-2, a pattern recognition receptor mainly expressed on myeloid cells, in the infarct healing remains unknown. Objective: To determine whether Dectin-2 signaling is involved in the healing process and cardiac remodeling after MI, and to elucidate the underlying molecular mechanisms. Methods and Results: In a mouse model of permanent coronary ligation, Dectin-2, mainly expressed in macrophages, was shown to be increased in the early phase after MI...
February 13, 2017: Circulation Research
https://www.readbyqxmd.com/read/28187781/priming-in-response-to-pro-inflammatory-cytokines-is-a-feature-of-adult-synovial-but-not-dermal-fibroblasts
#12
Thomas Crowley, John D O'Neil, Holly Adams, Andrew M Thomas, Andrew Filer, Christopher D Buckley, Andrew R Clark
BACKGROUND: It has been hypothesized that chronic inflammatory diseases such as rheumatoid arthritis (RA) may be caused by a failure of negative feedback mechanisms. This study sought to examine negative feedback mechanisms in fibroblast-like synoviocytes (FLS), one of the most abundant cell types in the joint. We hypothesized that prior exposure of healthy FLS to an inflammatory stimulus would attenuate their responses to a second inflammatory stimulus, in the same way that negative feedback mechanisms desensitize macrophages to repeated stimulation by lipopolysaccharide...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28185787/progression-of-renal-fibrosis-in-congenital-ckd-model-rats-with-reduced-number-of-nephrons
#13
Hidenori Yasuda, Yuki Tochigi, Kentaro Katayama, Hiroetsu Suzuki
A congenital reduction in the number of nephrons is a critical risk factor for both onset of chronic kidney disease (CKD) and its progression to end-stage kidney disease (ESKD). Hypoplastic kidney (HPK) rats have only about 20% of the normal number of nephrons and show progressive CKD. This study used an immunohistological method to assess glomerular and interstitial pathogenesis in male HPK rats aged 35-210days. CD68 positive-macrophages were found to infiltrate into glomeruli in HPK rats aged 35 and 70days and to infiltrate into interstitial tissue in rats aged 140 and 210days...
February 6, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28182772/murine-cytomegalovirus-infection-of-mouse-macrophages-stimulates-early-expression-of-suppressor-of-cytokine-signaling-socs-1-and-socs3
#14
Christine I Alston, Richard D Dix
Human cytomegalovirus (HCMV) is a species-specific β-herpesvirus that infects for life up to 80% of the world's population and causes severe morbidity in at-risk immunocompromised populations. Suppressors of cytokine signaling (SOCS)1 and SOCS3 are host proteins that act as inducible negative feedback regulators of cytokine signaling and have been implicated in several ocular diseases and viral infections. We recently found in our mouse model of experimental cytomegalovirus retinitis that subretinally-injected murine cytomegalovirus (MCMV) stimulates ocular SOCS1 and SOCS3 during retrovirus-induced immune suppression of murine AIDS (MAIDS), and that infiltrating macrophages are prominent cellular sources of retinal SOCS1 and SOCS3 expression...
2017: PloS One
https://www.readbyqxmd.com/read/28173838/osteoarthritis-associated-basic-calcium-phosphate-crystals-activate-membrane-proximal-kinases-in-human-innate-immune-cells
#15
Emma M Corr, Clare C Cunningham, Laura Helbert, Geraldine M McCarthy, Aisling Dunne
BACKGROUND: Osteoarthritis (OA) is a chronic debilitating joint disorder of particularly high prevalence in the elderly population. Intra-articular basic calcium phosphate (BCP) crystals are present in the majority of OA joints and are associated with severe degeneration. They are known to activate macrophages, synovial fibroblasts, and articular chondrocytes, resulting in increased cell proliferation and the production of pro-inflammatory cytokines and matrix metalloproteases (MMPs)...
February 7, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28173772/potential-importance-of-protease-activated-receptor-par-1-expression-in-the-tumor-stroma-of-non-small-cell-lung-cancer
#16
Cong Lin, Christof J Majoor, Joris J T H Roelofs, Martijn D de Kruif, Hugo M Horlings, Keren Borensztajn, C Arnold Spek
BACKGROUND: Protease activated receptor (PAR)-1 expression is increased in a variety of tumor cells. In preclinical models, tumor cell PAR-1 appeared to be involved in the regulation of lung tumor growth and metastasis; however the role of PAR-1 in the lung tumor microenvironment, which is emerging as a key compartment in driving cancer progression, remained to be explored. METHODS: In the present study, PAR-1 gene expression was determined in lung tissue from patients with non-small-cell lung cancer (NSCLC) using a combination of publicly available RNA microarray datasets and in house-made tissue microarrays including tumor biopsies of 94 patients with NSCLC (40 cases of adenocarcinoma, 42 cases of squamous cell carcinoma and 12 cases of other type of NSCLC at different stages)...
February 7, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28171221/the-significance-of-electron-microscopic-examination-of-gingiva-in-cases-of-hunter-syndrome-and-hereditary-gingival-fibromatosis
#17
(no author information available yet)
INTRODUCTION: Electron microscopy has been for decades a basic morphological method still used in diagnostic protocols of some pathological conditions affecting the ultrastructure of cells and extracellular matrix. The aim of this study was an ultrastructural description of gingiva of patients with Hunter syndrome and hereditary gingival fibromatosis. PATIENTS AND METHODS: Gingival biopsies were obtained during surgical periodontal treatment from a 9-year-old boy with Hunter disease (with enzyme replacement therapy with recombinant human idursulphase) and a 15-year-old girl with hereditary gingival fibromatosis...
October 24, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28165054/novel-treatment-of-chronic-graft-versus-host-disease-in-mice-using-the-er-stress-reducer-4-phenylbutyric-acid
#18
Shin Mukai, Yoko Ogawa, Fumihiko Urano, Chie Kudo-Saito, Yutaka Kawakami, Kazuo Tsubota
Chronic graft-versus-host disease (cGVHD) is a notorious complication of allogeneic hematopoietic stem cell transplantation and causes disabling systemic inflammation and fibrosis. In this novel study, we focused on a relationship between endoplasmic reticulum (ER) stress and cGVHD, and aimed to create effective treatment of cGVHD. A series of experiments were conducted using a mouse model of cGVHD. Our data suggested (1) that ER stress was elevated in organs affected by cGVHD and (2) that 4-phenylbutyric acid (PBA) could reduce cGVHD-induced ER stress and thereby alleviate systemic inflammation and fibrosis...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163107/glycation-stimulates-cutaneous-monocyte-differentiation-in-reconstructed-skin-in-vitro
#19
H Pageon, H Zucchi, F Rousset, S Hubert, E Tancrede, D Asselineau
Glycation reaction is a recognized mechanism related to chronological aging. Previous investigations in cutaneous biology have considered the effect of glycation on the dermal matrix molecules, involved in tissue stiffening during skin aging. However, little is known about a possible direct effect of glycation upon cell differentiation. To address such issue, the effect of glycation has been re-investigated in a reconstructed skin model integrating monocytes that are cells capable of differentiating according to different pathways...
February 2, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28162509/-275-interaction-among-keratinocytes-fibroblasts-and-cd163-overexpressing-macrophages-for-a-more-efficient-wound-healing-process
#20
D Ferreira, A Alvarado, C Ulecia Moron, E Romero-Sandoval
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
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