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https://www.readbyqxmd.com/read/29321503/il-34-and-csf-1-display-an-equivalent-macrophage-differentiation-ability-but-a-different-polarization-potential
#1
Sonia Boulakirba, Anja Pfeifer, Rana Mhaidly, Sandrine Obba, Michael Goulard, Thomas Schmitt, Paul Chaintreuil, Anne Calleja, Nathan Furstoss, François Orange, Sandra Lacas-Gervais, Laurent Boyer, Sandrine Marchetti, Els Verhoeyen, Frederic Luciano, Guillaume Robert, Patrick Auberger, Arnaud Jacquel
CSF-1 and IL-34 share the CSF-1 receptor and no differences have been reported in the signaling pathways triggered by both ligands in human monocytes. IL-34 promotes the differentiation and survival of monocytes, macrophages and osteoclasts, as CSF-1 does. However, IL-34 binds other receptors, suggesting that differences exist in the effect of both cytokines. In the present study, we compared the differentiation and polarization abilities of human primary monocytes in response to CSF-1 or IL-34. CSF-1R engagement by one or the other ligands leads to AKT and caspase activation and autophagy induction through expression and activation of AMPK and ULK1...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29318623/subcutaneous-immunotherapy-with-purified-der-p1-and-2-suppresses-type-2-immunity-in-a-murine-asthma-model
#2
Laura Hesse, Nienke van Ieperen, Corine Habraken, Arjen H Petersen, Silvia Korn, Tim Smilda, Betty Goedewaagen, Marcel H Ruiters, Adrianus C van der Graaf, Martijn C Nawijn
Allergen-specific immunotherapy can induce long-term suppression of allergic symptoms, reduce medication use and prevent exacerbations of allergic rhinitis and asthma. Current treatment is based on crude allergen extracts, which contain immunostimulatory components such as β-glucans, chitins and endotoxin. Use of purified or recombinant allergens might therefore increase efficacy of treatment. Here, we test application of purified natural group 1 and 2 allergens from Dermatophagoides pteronyssinus (Der p) for subcutaneous immunotherapy (SCIT) treatment in a house dust mite (HDM) driven mouse model of allergic asthma...
January 10, 2018: Allergy
https://www.readbyqxmd.com/read/29304863/gm-csf-overexpression-after-influenza-a-virus-infection-prevents-mortality-and-moderates-m1-like-airway-monocyte-macrophage-polarization
#3
E Scott Halstead, Todd M Umstead, Michael L Davies, Yuka Imamura Kawasawa, Patricia Silveyra, Judie Howyrlak, Linlin Yang, Weichao Guo, Sanmei Hu, Eranda Kurundu Hewage, Zissis C Chroneos
BACKGROUND: Influenza A viruses cause life-threatening pneumonia and lung injury in the lower respiratory tract. Application of high GM-CSF levels prior to infection has been shown to reduce morbidity and mortality from pathogenic influenza infection in mice, but the mechanisms of protection and treatment efficacy have not been established. METHODS: Mice were infected intranasally with influenza A virus (PR8 strain). Supra-physiologic levels of GM-CSF were induced in the airways using the double transgenic GM-CSF (DTGM) or littermate control mice starting on 3 days post-infection (dpi)...
January 5, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29296636/characterization-of-lymphopenia-in-patients-with-ms-treated-with-dimethyl-fumarate-and-fingolimod
#4
Maryam Nakhaei-Nejad, David Barilla, Chieh-Hsin Lee, Gregg Blevins, Fabrizio Giuliani
Objective: Lymphopenia is a common occurrence of disease-modifying therapies (DMTs) for relapsing-remitting MS (RRMS). The aim of this study was to dissect the prevalence of various lymphocyte subsets in patients with RRMS treated with 2 DMTs commonly associated with lymphopenia, dimethyl fumarate (DMF), and fingolimod (FTY). Methods: Multicolor flow cytometry and multiplex assays were used to identify up to 50 lymphocyte subpopulations and to examine the expression of multiple cytokines in selected patients...
March 2018: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/29289711/lipopolysaccharide-induces-tumor-necrosis-factor-receptor-1-independent-relocation-of-lymphocytes-from-the-red-pulp-of-the-mouse-spleen
#5
Ivana M Lalić, Rudolf Bichele, Anja Repar, Sanja Z Despotović, Saša Petričević, Martti Laan, Pärt Peterson, Jürgen Westermann, Živana Milićević, Ivana Mirkov, Novica M Milićević
It is well known that bacterial lipopolysaccharide (LPS) induces migration of several cellular populations within the spleen. However, there are no data about the impact of LPS on B and T lymphocytes present in the red pulp. Therefore, we used an experimental model in which we tested the effects of intravenously injected LPS on the molecular, cellular and structural changes of the spleen, with special reference to the red pulp lymphocytes. We discovered that LPS induced a massive relocation of B and T lymphocytes from the splenic red pulp, which was independent of the tumor necrosis factor receptor-1 signaling axis...
December 28, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29279059/systemic-inflammation-mediates-the-detrimental-effects-of-obesity-on-asthma-control
#6
Xin Zhang, Jing Zheng, Li Zhang, Ying Liu, Gai Ping Chen, Hong Ping Zhang, Lei Wang, De Ying Kang, Lisa G Wood, Gang Wang
BACKGROUND: Obesity negatively impacts asthma control, but the inflammatory mechanisms are poorly understood. OBJECTIVE: To explore which systemic inflammatory mediators mediate the effects of obesity on asthma control. METHODS: The subjects with stable asthma (n = 108) underwent assessment of clinical characteristics, which included using The Asthma Control Questionnaire (ACQ)-6. Obesity was defined as a body mass index (BMI) of ≥30 kg/m2, overweight was defined as BMI between 25 to 29...
January 2, 2018: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/29224368/immune-response-proteins-as-predictive-biomarkers-of-doxorubicin-induced-cardiotoxicity-in-breast-cancer-patients
#7
Li-Rong Yu, Zhijun Cao, Issam Makhoul, Jaclyn R Daniels, Suzanne Klimberg, Jeanne Y Wei, Jane Pf Bai, Jinong Li, Julia T Lathrop, Richard D Beger, Valentina K Todorova
Cancer treatment with doxorubicin (DOX) can induce cumulative dose-dependent cardiotoxicity. Currently, there are no specific biomarkers that can identify patients at risk during the initial doses of chemotherapy. The aim of this study was to examine plasma cytokines/chemokines and potential cardiovascular biomarkers for the prediction of DOX-induced cardiotoxicity. Plasma samples were collected before (T0), and after the first (T1) and the second (T2) cycles of DOX-based chemotherapy of 27 breast cancer patients, including five patients who presented with >10% decline of left ventricular ejection fraction (LVEF), five patients with LVEF decline of 5-10%, and 17 patients who maintained normal LVEF at the end of chemotherapy (240 mg/m2 cumulative dose of DOX from four cycles of treatment)...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29207093/potential-inhibitory-effects-of-the-traditional-herbal-prescription-hyangso-san-against-skin-inflammation-via-inhibition-of-chemokine-production-and-inactivation-of-stat1-in-hacat-keratinocytes
#8
Hye-Sun Lim, Sae-Rom Yo, Mee-Young Lee, Chang-Seob Seo, Hyeun-Kyoo Shin, Soo-Jin Jeong
Inflammatory skin disease are caused by multiple factors, including susceptibility genes, and immunologic and environmental factors, and are characterized by an increase in epidermal thickness and the infiltration of macrophages, keratinocytes, mast cells, eosinophils and other inflammatory cells. Keratinocytes may serve an important role in the pathogenesis of inflammatory skin diseases. The traditional herbal decoction Hyangso‑san (HSS) has been used to treat symptoms of the common cold, including headache, pantalgia, fever and chills...
November 28, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29156524/kif3a-knockdown-sensitizes-bronchial-epithelia-to-apoptosis-and-aggravates-airway-inflammation-in-asthma
#9
Gang Geng, Ying Du, Jihong Dai, Daiyin Tian, Yunqiu Xia, Zhou Fu
BACKGROUND: KIF3A expression was decreased in asthmatic child patients and animal. Impaired KIF3A expression resulted in increased Th2 inflammation in mice and apoptosis in renal tubular epithelium and photoreceptor cells. This work aimed to investigate the role of KIF3A in epithelium apoptosis and bronchial inflammation in asthma. METHODS: After establishment of ovalbumin induced asthma, the mice were infected with KIF3A adenovirus through nasal cavity inhalation...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29141920/parathyroid-hormone-related-protein-modulates-mice-mesangial-cells-inflammation-and-blunts-apoptosis-by-enhancing-cox-2-expression
#10
Mazène Hochane, Denis Raison, Catherine Coquard, Claire Béraud, Audrey Bethry, Sabrina Danilin, Thierry Massfelder, Mariette Barthelmebs
Mesangial cell (MC) injury is a prominent feature of glomerulonephritis. Activated MC secretes inflammatory mediators which induce cell apoptosis. Parathyroid hormone-related peptide (PTHrP) is a locally active cytokine that enhances cell survival and is upregulated by pro-inflammatory factors in many cell types. The aim of this study was to analyze the regulation of PTHrP expression by inflammatory cytokines, and to evaluate whether PTHrP itself acts as a pro-inflammatory and/or survival factor on male murine MC in primary culture...
November 15, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29122683/high-cxcl10-ip-10-levels-are-a-hallmark-in-the-clinical-evolution-of-the-hiv-infection
#11
Jacqueline María Valverde-Villegas, Rúbia Marília de Medeiros, Joel Henrique Ellwanger, Breno Riegel Santos, Marineide Gonçalves de Melo, Sabrina Esteves de Matos Almeida, José Artur Bogo Chies
The aim of this study was to investigate the modulation of plasma CXCL10, CCL20, CCL22, CCL2, CCL17 and CCL24 levels in HIV-positive patients grouped according to extreme phenotypes of progression to AIDS, and at different stages of HIV infection. HIV-positive individuals with extreme phenotypes of AIDS progression (n=58) at different clinical stages (chronic individuals, both pre-HAART and under-HAART) and HIV-negative controls (n=20) were evaluated. Additionally, HIV-positive individuals that initiated HAART with >350CD4(+)T-cells/mm(3) were compared with those who initiated treatment with <350CD4(+)T-cells/mm(3)...
November 6, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29122406/sensitive-skin-is-highly-frequent-in-extrinsic-atopic-dermatitis-and-correlates-with-disease-severity-markers-but-not-necessarily-with-skin-barrier-impairment
#12
Tsuyoshi Yatagai, Takatoshi Shimauchi, Hayato Yamaguchi, Jun-Ichi Sakabe, Masahiro Aoshima, Shigeki Ikeya, Kazuki Tatsuno, Toshiharu Fujiyama, Taisuke Ito, Toshiyuki Ojima, Yoshiki Tokura
BACKGROUND: Sensitive skin is a condition of cutaneous hypersensitivity to environmental factors. Lactic acid stinging test (LAST) is commonly used to assess sensitive skin and composed of four distinct sensations (pain, burning sensation, itch, and crawly feeling). A link between sensitive skin and barrier dysfunction has been proposed in atopic dermatitis (AD) patients. However, clinical and laboratory factors that are associated with sensitive skin remain unelucidated. OBJECTIVE: To investigate relationship between sensitive skin and AD-associated markers...
November 2, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29118379/a-new-antagonist-for-ccr4-attenuates-allergic-lung-inflammation-in-a-mouse-model-of-asthma
#13
Yang Zhang, Yinfang Wu, Hui Qi, Hongwei Gong, Yan Zhang, Enquan Xu, Song Li, Dalong Ma, Junhai Xiao, Ying Wang, Wen Li, Huahao Shen
CCR4 is highly expressed on Th2 cells. CCR4 ligands include CCL22 and CCL17. Chemokine-like factor 1 can also mediate chemotaxis via CCR4. We designed and synthetized novel CCR4 antagonists, which were piperazinyl pyridine derivatives, for disrupting the interaction between three ligands and CCR4. We also determined whether these novel CCR4 antagonists could alleviate allergic asthma in a mouse. For identifying the potent compounds in vitro, we used chemotaxis inhibition and competition binding assays induced by CCL22, CCL17 and one of CKLF1's C-terminal peptides, C27...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29103909/rna-aptamers-recognizing-murine-ccl17-inhibit-t-cell-chemotaxis-and-reduce-contact-hypersensitivity-in%C3%A2-vivo
#14
Lorenz Fülle, Nancy Steiner, Markus Funke, Fabian Gondorf, Franziska Pfeiffer, Julia Siegl, Friederike V Opitz, Silvana K Haßel, Anna Belen Erazo, Oliver Schanz, H James Stunden, Michael Blank, Carsten Gröber, Kristian Händler, Marc Beyer, Heike Weighardt, Eicke Latz, Joachim L Schultze, Günter Mayer, Irmgard Förster
The chemokine CCL17, mainly produced by dendritic cells (DCs) in the immune system, is involved in the pathogenesis of various inflammatory diseases. As a ligand of CCR4, CCL17 induces chemotaxis and facilitates T cell-DC interactions. We report the identification of two novel RNA aptamers, which were validated in vitro and in vivo for their capability to neutralize CCL17. Both aptamers efficiently inhibited the directed migration of the CCR4(+) lymphoma line BW5147.3 toward CCL17 in a dose-dependent manner...
October 13, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29099057/the-c-c-chemokines-ccl17-and-ccl22-and-their-receptor-ccr4-in-cns-autoimmunity
#15
REVIEW
Stefanie Scheu, Shafaqat Ali, Christina Ruland, Volker Arolt, Judith Alferink
Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system (CNS). It affects more than two million people worldwide, mainly young adults, and may lead to progressive neurological disability. Chemokines and their receptors have been shown to play critical roles in the pathogenesis of experimental autoimmune encephalomyelitis (EAE), a murine disease model induced by active immunization with myelin proteins or transfer of encephalitogenic CD4⁺ T cells that recapitulates clinical and neuropathological features of MS...
November 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29098351/the-roles-of-genetic-factors-in-kawasaki-disease-a-systematic-review-and-meta-analysis-of-genetic-association-studies
#16
REVIEW
Xiaochuan Xie, Xiaohan Shi, Meilin Liu
This systematic review and meta-analysis aimed to better elucidate the roles of genetic factors in Kawasaki disease (KD), and determine the potential genetic biomarkers of KD. The systematic literature search of PubMed, Medline, Embase, Web of Science and CNKI identified 164 eligible studies. The qualitative synthesis revealed that 62 genes may be correlated with the susceptibility to KD, and 47 genes may be associated with the incidence of coronary artery lesions (CALs) in KD. A total of 53 polymorphisms in 34 genes were investigated in further quantitative synthesis...
November 2, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29088998/post-injury-administration-of-galantamine-reduces-traumatic-brain-injury-pathology-and-improves-outcome
#17
Jing Zhao, Michael J Hylin, Nobuhide Kobori, Kimberly N Hood, Anthony N Moore, Pramod K Dash
Acetylcholine is an excitatory neurotransmitter in the central nervous system that plays a key role in cognitive function, including learning and memory. Previous studies have shown that experimental traumatic brain injury (TBI) reduces cholinergic neurotransmission, decreases evoked release of acetylcholine, and alters cholinergic receptor levels. Galantamine (U.S. Food and Drug Administration approved for the treatment of vascular dementia and Alzheimer's disease) has been shown to inhibit acetylcholinesterase activity and allosterically potentiate nicotinic receptor signaling...
December 18, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29065892/the-value-of-blood-cytokines-and-chemokines-in-assessing-copd
#18
Eric Bradford, Sean Jacobson, Jason Varasteh, Alejandro P Comellas, Prescott Woodruff, Wanda O'Neal, Dawn L DeMeo, Xingnan Li, Victor Kim, Michael Cho, Peter J Castaldi, Craig Hersh, Edwin K Silverman, James D Crapo, Katerina Kechris, Russell P Bowler
BACKGROUND: Blood biomarkers are increasingly used to stratify high risk chronic obstructive pulmonary disease (COPD) patients; however, there are fewer studies that have investigated multiple biomarkers and replicated in multiple large well-characterized cohorts of susceptible current and former smokers. METHODS: We used two MSD multiplex panels to measure 9 cytokines and chemokines in 2123 subjects from COPDGene and 1117 subjects from SPIROMICS. These biomarkers included: interleukin (IL)-2, IL-6, IL-8, IL-10, tumor necrosis factor (TNF)-α, interferon (IFN)-γ, eotaxin/CCL-11, eotaxin-3/CCL-26, and thymus and activation-regulated chemokine (TARC)/CCL-17...
October 24, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29050978/chrysin-attenuates-atopic-dermatitis-by-suppressing-inflammation-of-keratinocytes
#19
Jin Kyeong Choi, Yong Hyun Jang, Soyoung Lee, Sang-Rae Lee, Young-Ae Choi, Meiling Jin, Jung Ho Choi, Jee Hun Park, Pil-Hoon Park, Hyukjae Choi, Taeg Kyu Kwon, Dongwoo Khang, Sang-Hyun Kim
We previously reported the inhibitory effect of chrysin, a natural flavonoid plentifully contained in propolis, vegetables and fruits, on the mast cell-mediated allergic reaction. In this study, we evaluated the effect of chrysin on atopic dermatitis (AD) and defined underlying mechanisms of action. We used an AD model in BALB/c mice by the repeated local exposure of 2,4-dinitrochlorobenzene (DNCB) and house dust mite (Dermatophagoides farinae extract, DFE) to the ears. Repeated alternative treatment of DNCB/DFE caused AD-like skin lesions...
October 16, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29025731/macrophage-depletion-using-clodronate-liposomes-decreases-tumorigenesis-and-alters-gut-microbiota-in-the-aom-dss-mouse-model-of-colon-cancer
#20
Jackie E Bader, Reilly T Enos, Kandy T Velazquez, Meredith S Carson, Mitzi Nagarkatti, Prakash S Nagarkatti, Ioulia Chatzistamou, J Mark Davis, James A Carson, Cory Robinson, E Angela Murphy
We examined the role of macrophages in inflammation associated colorectal cancer (CRC). Given the emerging evidence on immune-microbiota interactions in CRC, we also sought to examine the interaction between macrophages and gut microbiota. To induce CRC, male C57BL/6 mice (n=32) received a single injection of azoxymethane (AOM) followed by three cycles of dextran sodium sulfate (DSS) supplemented water at weeks 1, 4, and 7, respectively. Prior to the final DSS cycle (week 7) and twice weekly until sacrifice, mice (n=16/group) received either 200μl i...
October 12, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
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