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https://www.readbyqxmd.com/read/29338773/chemokine-ligand-receptor-interactions-critically-regulate-cutaneous-wound-healing
#1
Erich Bünemann, Norman-Philipp Hoff, Bettina Alexandra Buhren, Ulrike Wiesner, Stephan Meller, Edwin Bölke, Anja Müller-Homey, Robert Kubitza, Thomas Ruzicka, Albert Zlotnik, Bernhard Homey, Peter Arne Gerber
BACKGROUND: Wound healing represents a dynamic process involving directional migration of different cell types. Chemokines, a family of chemoattractive proteins, have been suggested to be key players in cell-to-cell communication and essential for directed migration of structural cells. Today, the role of the chemokine network in cutaneous wound healing is not fully understood. Unraveling the chemokine-driven communication pathways in this complex process could possibly lead to new therapeutic strategies in wound healing disorders...
January 16, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29334431/activation-state-of-circulating-eosinophils-in-nasal-polyposis
#2
Vincent Dupuch, Arlette Tridon, Sylvie Ughetto, Stéphane Walrand, Benjamin Bonnet, Claude Dubray, Aude Virlogeux, Marie-Paule Vasson, Nicolas Saroul, Thierry Mom, Laurent Gilain, Bertrand Evrard
BACKGROUND: Chronic rhinosinusitis with nasal polyps (CRSwNP) is a common disease with an uncertain pathophysiology. It is characterized by polyps rich in eosinophils, with an activation status already investigated at the tissue level. In a group of CRSwNP patients, we assessed the activation status of circulating eosinophils in the blood before migration into tissues. METHODS: Thirteen patients with CRSwNP and 16 healthy volunteers were enrolled. Several biologic parameters were studied: blood count of eosinophils; plasma eosinophil cationic protein; oxidative metabolism by chemiluminescence at baseline or when activated by phorbol 12-myristate 13-acetate or platelet-activating factor, with or without interleukin-5 (IL-5); percent of granulosar cells; and mean fluorescence intensity (MFI) by flow cytometry...
January 15, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29281969/functional-expression-of-ccl8-and-its-interaction-with-chemokine-receptor-ccr3
#3
Baosheng Ge, Jiqiang Li, Zhijin Wei, Tingting Sun, Yanzhuo Song, Naseer Ullah Khan
BACKGROUND: Chemokines and their cognate receptors play important role in the control of leukocyte chemotaxis, HIV entry and other inflammatory diseases. Developing an effcient method to investigate the functional expression of chemokines and its interactions with specific receptors will be helpful to asses the structural and functional characteristics as well as the design of new approach to therapeutic intervention. RESULTS: By making systematic optimization study of expression conditions, soluble and functional production of chemokine C-C motif ligand 8 (CCL8) in Escherichia coli (E...
December 28, 2017: BMC Immunology
https://www.readbyqxmd.com/read/29225189/luteolin-attenuates-airway-inflammation-by-inducing-the-transition-of-cd4-cd25-to-cd4-cd25-regulatory-t-cells
#4
Seung-Hyung Kim, Evelyn Saba, Bok-Kyu Kim, Won-Kyung Yang, Yang-Chun Park, Han Jae Shin, Chang Kyun Han, Young Cheol Lee, Man Hee Rhee
Regulatory T cells (Th2) play an important role in autoimmunity and have been shown to exert anti-inflammatory effects in allergic asthma. Mouse model of airway inflammation was used to examine the suppressive activity of luteolin-induced CD4+CD25+ regulatory T cells (Tregs) in vivo. In this study, BALB/c mice were sensitized with ovalbumin antigen (OVA) by aerosol challenge. Then, various biological processes were examined, including airway eosinophilia; mucus hypersecretion; elevation of OVA-specific IgE, expression of Th2 cytokines and chemokine levels; expression of eotaxin 2 and CCR3; and airway hyper responsiveness (AHR)...
December 7, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29207604/canis-familiaris-allergen-can-f-6-expression-purification-and-analysis-of-b-cell-epitopes-in-chinese-dog-allergic-children
#5
Yu-Jie Wang, Lin Li, Wei-Juan Song, Yan-Jun Zhou, Meng-Da Cao, Xiang-Rong Zuo, Ji-Fu Wei
Dog allergy is common worldwide. However, the allergenicity of dog allergy is still unclear in China as well as in special group, such as children. In this study, we chose Can f 6, a major dog allergen which belongs to the lipocalin to study its allergenicity in Chinese dog allergic children. Can f 6 gene was subcloned into pET-28a vector and transformed into E. coli BL21 (DE3) cells for expression. The recombinant Can f 6 was purified by nickel affinity chromatography, identified by SDS-PAGE, and tested for its allergenicity by Western blot with sera and basophil activation test...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29197526/pathway-analysis-of-differentially-expressed-genes-in-mycobacterium-bovis-challenged-bovine-macrophages
#6
Sanjeev Kumar Shukla, Shubhra Shukla, Anuj Chauhan, Sarvjeet, Rehan Khan, Anuj Ahuja, Lakshya Veer Singh, Nitin M Kamble, Anupam Dhasmana, Naveen Sharma, Bipin Chand, Ajay Vir Singh, Manjit Panigrahi
The immune signalling genes during challenge of bovine macrophages with bacterial products derived from disease causing bacteria in cattle were investigated. An in-vitro cell culture model were challenged to Mycobacterium bovis of bovine monocyte derived macrophages. Macrophages from healthy and already infected animals can both be fully activated during M. bovis infection. Analysis of mRNA abundance in peripheral blood mononuclear cells from M. bovis infected and non-infected cattle were performed as a controls...
November 29, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29186205/narcolepsy-susceptibility-gene-ccr3-modulates-sleep-wake-patterns-in-mice
#7
Hiromi Toyoda, Yoshiko Honda, Susumu Tanaka, Taku Miyagawa, Makoto Honda, Kazuki Honda, Katsushi Tokunaga, Tohru Kodama
Narcolepsy is caused by the loss of hypocretin (Hcrt) neurons and is associated with multiple genetic and environmental factors. Although abnormalities in immunity are suggested to be involved in the etiology of narcolepsy, no decisive mechanism has been established. We previously reported chemokine (C-C motif) receptor 3 (CCR3) as a novel susceptibility gene for narcolepsy. To understand the role of CCR3 in the development of narcolepsy, we investigated sleep-wake patterns of Ccr3 knockout (KO) mice. Ccr3 KO mice exhibited fragmented sleep patterns in the light phase, whereas the overall sleep structure in the dark phase did not differ between Ccr3 KO mice and wild-type (WT) littermates...
2017: PloS One
https://www.readbyqxmd.com/read/29182645/hla-and-non-hla-genes-and-familial-predisposition-to-autoimmune-diseases-in-families-with-a-child-affected-by-type-1-diabetes
#8
Anna Parkkola, Antti-Pekka Laine, Markku Karhunen, Taina Härkönen, Samppa J Ryhänen, Jorma Ilonen, Mikael Knip
Genetic predisposition could be assumed to be causing clustering of autoimmunity in individuals and families. We tested whether HLA and non-HLA loci associate with such clustering of autoimmunity. We included 1,745 children with type 1 diabetes from the Finnish Pediatric Diabetes Register. Data on personal or family history of autoimmune diseases were collected with a structured questionnaire and, for a subset, with a detailed search for celiac disease and autoimmune thyroid disease. Children with multiple autoimmune diseases or with multiple affected first- or second-degree relatives were identified...
2017: PloS One
https://www.readbyqxmd.com/read/29160519/ex-vivo-t-lymphocyte-chemokine-receptor-phenotypes-in-patients-with-chronic-chagas-disease
#9
Matheus Barbosa de Miranda, Adriene Siqueira de Melo, Mariana Silva Almeida, Silvia Martins Marinho, Wilson Oliveira, Yara de Miranda Gomes
INTRODUCTION: Elucidating the molecules involved in the inflammatory process of chronic Chagas disease may allow identification of treatment targets. METHODS: The ex vivo phenotypic expression of chemokine receptors CCR1, CCR3, CCR4, CCR5, CXCR2, CXCR3, CXCR4, and CXCR5 on the CD4+ and CD8+ T-cells of patients with chronic Chagas cardiomyopathy of varying severity was evaluated using flow cytometry. RESULTS: Differential expression of CD4+CCR3+ and CD8+CCR4+ T-cells was observed in patients with mild cardiac involvement compared, respectively, with patients with severe cardiac and asymptomatic forms of Chagas disease...
September 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29132135/increased-th1-th17-responses-contribute-to-low-grade-inflammation-in-age-related-macular-degeneration
#10
Jiajia Chen, Wenzhan Wang, Qiuming Li
BACKGROUND/AIMS: Age-related macular degeneration (AMD) is the primary cause of senior blindness in developed countries. Mechanisms underlying initiation and development of AMD remained known. METHODS: We examined the CD4+ T cell compartments and their functions in AMD patients. RESULTS: AMD patients presented significantly higher frequencies of interferon (IFN)-γ-expressing and interleukin (IL)-17-expressing CD4+ T cells than healthy controls...
November 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29121993/transcriptomic-analyses-reveal-the-underlying-pro-malignant-functions-of-pthr1-for-osteosarcoma-via-activation-of-wnt-and-angiogenesis-pathways
#11
Shenglong Li, Yujin Dong, Ke Wang, Zhe Wang, Xiaojing Zhang
BACKGROUND: Increasing evidence has indicated parathyroid hormone type 1 receptor (PTHR1) plays important roles for the development and progression of osteosarcoma (OS). However, its function mechanisms remain unclear. The goal of this study was to further illuminate the roles of PTHR1 in OS using microarray data. METHODS: Microarray data were available from the Gene Expression Omnibus database under the accession number GSE46861, including six tumors from mice with PTHR1 knockdown (PTHR1...
November 9, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29089446/mir-505-3p-controls-chemokine-receptor-up-regulation-in-macrophages-role-in-familial-hypercholesterolemia
#12
Rafael Escate, Pedro Mata, Jose Maria Cepeda, Teresa Padró, Lina Badimon
Familial hypercholesterolemia (FH) conveys a high risk of premature atherosclerosis as a result of lifelong exposure to high LDL cholesterol levels that are not fully reduced by standard-of-care lipid-lowering treatment. Inflammatory mediators have played a role in the progression of atherosclerotic lesions. Here, we investigated whether innate immunity cells in patients with FH have a specific proinflammatory phenotype that is distinct from that of cells in normal participants. To this end, miR-505-3p-a microRNA related to chronic inflammation-and its target genes were investigated in monocyte-derived macrophages (MACs) of patients with FH (FH-MACs) and non-FH controls (co-MACs)...
October 31, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29062168/illicium-verum-extract-and-trans-anethole-attenuate-ovalbumin-induced-airway-inflammation-via-enhancement-of-foxp3-regulatory-t-cells-and-inhibition-of-th2-cytokines-in-mice
#13
Yoon-Young Sung, Seung-Hyung Kim, Dong-Seon Kim, Ji-Eun Lee, Ho Kyoung Kim
Illicium verum is used in traditional medicine to treat inflammation. The study investigates the effects of IVE and its component, trans-anethole (AET), on airway inflammation in ovalbumin- (OVA-) induced asthmatic mice. Asthma was induced in BALB/c mice by systemic sensitization to OVA, followed by intratracheal, intraperitoneal, and aerosol allergen challenges. IVE and AET were orally administered for four weeks. We investigated the effects of treatment on airway hyperresponsiveness, IgE production, pulmonary eosinophilic infiltration, immune cell phenotypes, Th2 cytokine production in bronchoalveolar lavage, Th1/Th2 cytokine production in splenocytes, forkhead box protein 3 (Foxp3) expression, and lung histology...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29051319/ccl26-participates-in-the-prl-3-induced-promotion-of-colorectal-cancer-invasion-by-stimulating-tumor-associated-macrophage-infiltration
#14
Qiusheng Lan, Wei Lai, Yujie Zeng, Lu Liu, Shoufeng Li, Shaowen Jin, Yang Zhang, Xingxi Luo, Heyang Xu, Xiangan Lin, Zhonghua Chu
Both phosphatase of regenerating liver-3 (PRL-3) and tumor-associated macrophages (TAMs) influence cancer progression. Whether PRL-3 plays a critical role in colorectal cancer (CRC) invasion and metastasis by inducing TAM infiltration remains unclear. In the present study, we investigated the effects of chemokine ligand 26 (CCL26) on TAM infiltration and CRC invasion and the underlying mechanism in CRC cells by overexpressing or silencing PRL-3. We found that PRL-3 up-regulated CCL26 expression correlatively and participated in cell migration, according to the results of gene ontology analysis...
October 19, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29045346/autoimmune-hepatitis-and-aih-overlap-with-sclerosing-cholangitis-immunophenotype-markers-in-children-and-adolescents
#15
Priscila Menezes Ferri, Ana Cristina Simões E Silva, Karen Cecília de Lima Torres, Soraya Luiza Campos Silva, Diego Júnior Queiroga de Aquino, Maria Luísa Marques Ferreira, Eleonora Druve Tavares Fagundes, Débora Marques de Miranda, Alexandre Rodrigues Ferreira
OBJECTIVE: The pathophysiology of autoimmune hepatitis (AIH) may involve the activation of immune cells and changes in the expression of cellular markers. The aim of this study was to characterize the immunophenotype markers of lymphocytes and monocytes in the peripheral blood of children and adolescents with type 1 AIH and AIH overlap with sclerosing cholangitis (overlap syndrome, OS). METHODS: This is a cross-sectional study of 20 children and adolescents diagnosed with type 1 AIH and 19 with OS...
October 17, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29042950/expression-of-ccr3-sox5-and-lc3-in-patients-with-elderly-onset-rheumatoid-arthritis-and-the-clinical-significance
#16
Jing Wang, Qing Zhao
This study investigated the expression of C-C chemokine receptor type 3 (CCR3), transcription factor SOX5 (SOX5) and microtubule-associated protein 1 light chain 3 (LC3) in patients with elderly onset rheumatoid arthritis (EORA) and the clinical significance. Ninety patients with elderly onset rheumatoid arthritis were selected in our hospital from January to December in 2016 to serve as patient group. At the same time, 50 healthy people were selected as control group. Levels of CCR3, SOX5 and LC3 in serum of two groups were detected by enzyme-linked immunosorbent assay (ELISA)...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29029332/identification-of-a-novel-subset-of-myeloid-derived-suppressor-cells-during-chronic-staphylococcal-infection-that-resembles-immature-eosinophils
#17
Oliver Goldmann, Andreas Beineke, Eva Medina
We have previously reported that myeloid-derived suppressor cells (MDSC), which are a heterogeneous population of immunosuppressive immature myeloid cells, expanded during chronic Staphylococcus aureus infection and promoted bacterial persistence by inhibiting effector T cells. Two major MDSC subsets including monocytic MDSCs (M-MDSC) and granulocytic MDSCs (G-MDSC) have been described to date. Here, we identified a new subset of MDSC (Eo-MDSC) in S. aureus-infected mice that phenotypically resembles eosinophils...
September 23, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28994588/regulation-of-the-oligomeric-status-of-ccr3-with-binding-ligands-revealed-by-single-molecule-fluorescence-imaging
#18
Yanzhuo Song, Baosheng Ge, Jun Lao, Zhencai Wang, Bin Yang, Xiaojuan Wang, Hua He, Jiqiang Li, Fang Huang
The relationship between the oligomeric status and functions of chemokine receptor CCR3 is still controversial. We use total internal reflection fluorescence microscopy at the single-molecule level to visualize the oligomeric status of CCR3 and its regulation of the membrane of stably transfected T-REx-293 cells. We find that the population of the dimers and oligomers of CCR3 can be modulated by the binding of ligands. Natural agonists can induce an increase in the level of dimers and oligomers at high concentrations, whereas antagonists do not have a significant influence on the oligomeric status...
October 30, 2017: Biochemistry
https://www.readbyqxmd.com/read/28986277/upregulation-of-peripheral-cxc-and-cc-chemokine-receptor-expression-on-cd4-t-cells-is-associated-with-immune-dysregulation-in-children-with-autism
#19
Sheikh F Ahmad, Mushtaq A Ansari, Ahmed Nadeem, Saleh A Bakheet, Laila Yousef Al-Ayadhi, Sabry M Attia
Autism spectrum disorders (ASD) are characterized by disturbances in social interactions and communication, restricted repetitive interests, and stereotyped behavior. Cumulative evidence recommends that there are immune alterations in ASD. Chemokine receptors are known to play an important role in the central nervous system (CNS) and in many neuro inflammatory disorders. The main objective of this study was to explore the role of CXC and CC chemokine receptors signaling in children with autism. We examined chemokine receptor production of CXCR2, CXCR3, CXCR5, and CXCR7 in all peripheral blood mononuclear cells (PBMCs) and in CD4(+) T cells of typically developing control children (TD) and autistic children (AU)...
October 3, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28936366/constitutive-and-stress-induced-expression-of-ccl5-machinery-in-rodent-retina
#20
D'Anne S Duncan, William M McLaughlin, Noah Vasilakes, Franklin D Echevarria, Cathryn R Formichella, Rebecca M Sappington
Signaling by inflammatory cytokines and chemokines is associated with neurodegeneration in disease and injury. Here we examined expression of the β-chemokine CCL5 and its receptors in the mouse retina and evaluated its relevance in glaucoma, a common optic neuropathy associated with sensitivity to intraocular pressure (IOP). Using quantitative PCR, fluorescent in situ hybridization, immunohistochemistry and quantitative image analysis, we found CCL5 mRNA and protein was constitutively expressed in the inner retina and synaptic layers...
June 2017: Journal of Clinical & Cellular Immunology
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