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https://www.readbyqxmd.com/read/27922126/viral-and-bacterial-co-infection-in-severe-pneumonia-triggers-innate-immune-responses-and-specifically-enhances-ip-10-a-translational-study
#1
Jonathan Hoffmann, Daniela Machado, Olivier Terrier, Stephane Pouzol, Mélina Messaoudi, Wilma Basualdo, Emilio E Espínola, Rosa M Guillen, Manuel Rosa-Calatrava, Valentina Picot, Thomas Bénet, Hubert Endtz, Graciela Russomando, Gláucia Paranhos-Baccalà
Mixed viral and bacterial infections are widely described in community-acquired pneumonia; however, the clinical implications of co-infection on the associated immunopathology remain poorly studied. In this study, microRNA, mRNA and cytokine/chemokine secretion profiling were investigated for human monocyte-derived macrophages infected in-vitro with Influenza virus A/H1N1 and/or Streptococcus pneumoniae. We observed that the in-vitro co-infection synergistically increased interferon-γ-induced protein-10 (CXCL10, IP-10) expression compared to the singly-infected cells conditions...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920495/card9-as-a-potential-target-in-cardiovascular-disease
#2
REVIEW
Matthew R Peterson, Samantha E Haller, Jun Ren, Sreejayan Nair, Guanglong He
Systemic inflammation and localized macrophage infiltration have been implicated in cardiovascular pathologies, including coronary artery disease, carotid atherosclerosis, heart failure, obesity-associated heart dysfunction, and cardiac fibrosis. Inflammation induces macrophage infiltration and activation and release of cytokines and chemokines, causing tissue dysfunction by instigating a positive feedback loop that further propagates inflammation. Cytosolic adaptor caspase recruitment domain family, member 9 (CARD9) is a protein expressed primarily by dendritic cells, neutrophils, and macrophages, in which it mediates cytokine secretion...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27919758/the-chemokinome-superfamily-in-channel-catfish-i-cxc-subfamily-and-their-involvement-in-disease-defense-and-hypoxia-responses
#3
Qiang Fu, Qifan Zeng, Yun Li, Yujia Yang, Chao Li, Shikai Liu, Tao Zhou, Ning Li, Jun Yao, Chen Jiang, Daoji Li, Zhanjiang Liu
Chemokines are a superfamily of structurally related chemotactic cytokines exerting significant roles in regulating cell migration and activation. They are defined by the presence of four conserved cysteine residues and are divided into four subfamilies depending on the arrangement of the first two conserved cysteines residues: CXC, CC, C and CX3C. In this study, a complete set of 17 CXC chemokine ligand (CXCL) genes was systematically identified and characterized from channel catfish genome through data mining of existing genomic resources...
December 2, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27919438/does-an-increased-body-mass-index-affect-endometrial-gene-expression-patterns-in-infertile-patients-a%C3%A2-functional-genomics-analysis
#4
Ioanna A Comstock, Patricia Diaz-Gimeno, Sergio Cabanillas, Jose Bellver, Patricia Sebastian-Leon, Meera Shah, Amy Schutt, Cecilia T Valdes, Maria Ruiz-Alonso, Diana Valbuena, Carlos Simon, Ruth B Lathi
OBJECTIVE: To analyze the transcriptomic profile of endometrial gene alterations during the window of implantation in infertile obese patients. DESIGN: Multicenter, prospective, case-control study. SETTING: Three academic medical centers for reproductive medicine. PATIENT(S): Infertile patients, stratified into body mass index (BMI) categories according to the World Health Organization guidelines, were included in the study...
December 2, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27919187/diagnostic-value-of-serum-ferritin-and-the-risk-factors-and-cytokine-profiles-of-hemophagocytic-syndrome-following-allogeneic-hematopoietic-cell-transplantation
#5
Satoru Nanno, Hideo Koh, Yasuhiro Nakashima, Takako Katayama, Hiroshi Okamura, Shiro Koh, Takuro Yoshimura, Mitsutaka Nishimoto, Yoshiki Hayashi, Mika Nakamae, Asao Hirose, Takahiko Nakane, Masayuki Hino, Hirohisa Nakamae
To examine the diagnostic value of serum ferritin, the associated risk factors, and cytokine profiles of hemophagocytic syndrome (HPS) following allogeneic hematopoietic cell transplantation (allo-HCT), we retrospectively analyzed data from patients undergoing allo-HCT between 2006 and 2012. Of 223 eligible patients, 18 patients developed HPS. A serum ferritin level above 30,000 μg/l was highly specific for the detection of HPS (specificity, 93%). The one-year survival rate for HPS was significantly lower than that of non-HPS patients (37...
December 6, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27918885/mutant-ccl2-protein-coating-mitigates-wear-particle-induced-bone-loss-in-a-murine-continuous-polyethylene-infusion-model
#6
Akira Nabeshima, Jukka Pajarinen, Tzu-Hua Lin, Xinyi Jiang, Emmanuel Gibon, Luis A Córdova, Florence Loi, Laura Lu, Eemeli Jämsen, Kensuke Egashira, Fan Yang, Zhenyu Yao, Stuart B Goodman
Wear particle-induced osteolysis limits the long-term survivorship of total joint replacement (TJR). Monocyte/macrophages are the key cells of this adverse reaction. Monocyte Chemoattractant Protein-1 (MCP-1/CCL2) is the most important chemokine regulating trafficking of monocyte/macrophages in particle-induced inflammation. 7ND recombinant protein is a mutant of CCL2 that inhibits CCL2 signaling. We have recently developed a layer-by-layer (LBL) coating platform on implant surfaces that can release biologically active 7ND...
November 24, 2016: Biomaterials
https://www.readbyqxmd.com/read/27918831/induction-of-chemokine-secretion-and-monocyte-migration-by-human-choroidal-melanocytes-in-response-to-proinflammatory-cytokines
#7
Tina Jehs, Carsten Faber, Maja S Udsen, Martine J Jager, Simon J Clark, Mogens H Nissen
Purpose: To determine to which extent inflammatory cytokines affect chemokine secretion by primary human choroidal melanocytes (HCMs), their capacity to attract monocytes, and whether HCMs are able to influence the proliferation of activated T cells. Methods: Primary cultures of HCMs were established from eyes of 13 donors. Human choroidal melanocytes were stimulated with IFN-γ and TNF-α or with supernatant from activated T cells (T-cell-conditioned media [TCM])...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27918748/the-cxcl12-cxcr4-signaling-pathway-a-new-susceptibility-factor-in-human-papillomavirus-pathogenesis
#8
Floriane Meuris, Laetitia Carthagena, Agnieszka Jaracz-Ros, Françoise Gaudin, Pasquale Cutolo, Claire Deback, Yuezhen Xue, Françoise Thierry, John Doorbar, Françoise Bachelerie
The productive human papillomavirus (HPV) life cycle is tightly linked to the differentiation and cycling of keratinocytes. Deregulation of these processes and stimulation of cell proliferation by the action of viral oncoproteins and host cell factors underlies HPV-mediated carcinogenesis. Severe HPV infections characterize the wart, hypogammaglobulinemia, infection, and myelokathexis (WHIM) immunodeficiency syndrome, which is caused by gain-of-function mutations in the CXCR4 receptor for the CXCL12 chemokine, one of which is CXCR41013...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27917296/stat1-associated-intratumoural-th1-immunity-predicts-chemotherapy-resistance-in-high-grade-serous-ovarian-cancer
#9
Katrina K Au, Cécile Le Page, Runhan Ren, Liliane Meunier, Isabelle Clément, Kathrin Tyrishkin, Nichole Peterson, Jennifer Kendall-Dupont, Timothy Childs, Julie-Ann Francis, Charles H Graham, Andrew W Craig, Jeremy A Squire, Anne-Marie Mes-Masson, Madhuri Koti
High-grade serous ovarian carcinoma (HGSC) accounts for 70% of all epithelial ovarian cancers but clinical management is challenged by a lack of accurate prognostic and predictive biomarkers of chemotherapy response. This study evaluated the role of Signal Transducer and Activator of Transcription 1 (STAT1) as an independent prognostic and predictive biomarker and its correlation with intratumoural CD8(+) T cells in a second independent biomarker validation study. Tumour STAT1 expression and intratumoural CD8(+) T cell infiltration were assessed by immunohistochemistry as a multicentre validation study conducted on 734 chemotherapy-naïve HGSCs...
October 2016: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/27916896/the-impact-of-cxcr4-blockade-on-the-survival-of-rat-brain-cortical-neurons
#10
José Joaquín Merino, Alba Garcimartín, María Elvira López-Oliva, Juana Benedí, María Pilar González
BACKGROUND: Chemokine receptor type 4 (CXCR4) plays a role in neuronal survival/cell repair and also contributes to the progression of cancer and neurodegenerative diseases. Chemokine ligand 12 (CXCL12) binds to CXCR4. In this study, we have investigated whether CXCR4 blockade by AMD3100 (a CXCR4 antagonist, member of bicyclam family) may affect neuronal survival in the absence of insult. Thus, we have measured the mitochondrial membrane potential (MMP), Bax and Bcl-2 protein translocation, and cytochrome c release in AMD3100-treated brain cortical neurons at 7 DIV (days in vitro)...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916557/histone-acetylation-and-histone-deacetylation-in-neuropathic-pain-an-unresolved-puzzle
#11
REVIEW
Ravneet Kaur Khangura, Anjana Bali, Amteshwar Singh Jaggi, Nirmal Singh
Chronic pain is broadly classified into somatic, visceral or neuropathic pain depending upon the location and extent of pain perception. Evidences from different animal studies suggest that inflammatory or neuropathic pain is associated with altered acetylation and deacetylation of histone proteins, which result in abnormal transcription of nociceptive processing genes. There have been a number of studies indicating that nerve injury up-regulates histone deacetylase enzymes, which leads to increased histone deacetylation and induce chronic pain...
December 2, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27916417/ccl20-ccr6-promotes-cell-proliferation-and-metastasis-in-laryngeal-cancer-by-activating-p38-pathway
#12
Eryong Lu, Jili Su, Yanhui Zhou, Chao Zhang, Yuehui Wang
Chemokine and its receptors play important roles in laryngeal cancer development and progression. CCR6 is the receptor of CCL20 chemokine, but its function in laryngeal cancer is not known. The aim of this study is to explore the roles of CCR6 and its regulation mechanism in laryngeal cancer. We found CCR6 expression was higher in laryngeal cancer tissues compared with their normal controls, so did in laryngeal cancer cells. Cellular function indicated that down-regulation of CCR6 in laryngeal cancer cells could suppress cell proliferation and metastasis...
December 1, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27916085/-ccr7-silence-by-sirna-inhibits-proliferation-invasion-and-promotes-apoptosis-of-human-mg63-osteosarcoma-cells
#13
Richun Zhang, Hongtao Zhang, Zhen E, Qiong Ma, Shiju Yan, Enwei Zhang, Bao'an Ma
Objective To investigate the effect of siRNA-mediated chemokine receptor 7 (CCR7) silence on the proliferation, migration, invasion and apoptosis of human MG-63 osteosarcoma cells. Methods The study designed and synthesized siRNA targeting CCR7 (CCR7-siRNA). After MG63 cells were transfected with CCR7-siRNA, the expression of CCR7 was identified by Western blotting; cell apoptosis was detected by annexinV-FITC/PI double staining combined with flow cemetery; cell proliferation was tested by MTT assay; and cell migration and invasion abilities were examined by Transwell(TM) migration/invasion assays...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27914741/maternal-bcg-scar-is-associated-with-increased-infant-proinflammatory-immune-responses
#14
Patrice Akusa Mawa, Emily L Webb, Abdelali Filali-Mouhim, Gyaviira Nkurunungi, Rafick-Pierre Sekaly, Swaib Abubaker Lule, Sarah Prentice, Stephen Nash, Hazel M Dockrell, Alison M Elliott, Stephen Cose
INTRODUCTION: Prenatal exposures such as infections and immunisation may influence infant responses. We had an opportunity to undertake an analysis of innate responses in infants within the context of a study investigating the effects of maternal mycobacterial exposures and infection on BCG vaccine-induced responses in Ugandan infants. MATERIAL AND METHODS: Maternal and cord blood samples from 29 mother-infant pairs were stimulated with innate stimuli for 24h and cytokines and chemokines in supernatants were measured using the Luminex® assay...
November 30, 2016: Vaccine
https://www.readbyqxmd.com/read/27914709/podocyte-specific-chemokine-c-c-motif-receptor-2%C3%A2-overexpression-mediates-diabetic-renal-injury-in%C3%A2-mice
#15
Hanning You, Ting Gao, Wesley M Raup-Konsavage, Timothy K Cooper, Sarah K Bronson, W Brian Reeves, Alaa S Awad
Inflammation is a central pathophysiologic mechanism that contributes to diabetes mellitus and diabetic nephropathy. Recently, we showed that macrophages directly contribute to diabetic renal injury and that pharmacological blockade or genetic deficiency of chemokine (C-C motif) receptor 2 (CCR2) confers kidney protection in diabetic nephropathy. However, the direct role of CCR2 in kidney-derived cells such as podocytes in diabetic nephropathy remains unclear. To study this, we developed a transgenic mouse model expressing CCR2 specifically in podocytes (Tg[NPHS2-Ccr2]) on a nephropathy-prone (DBA/2J) and CCR2-deficient (Ccr2(-/-)) background with heterozygous Ccr2(+/-) littermate controls...
November 30, 2016: Kidney International
https://www.readbyqxmd.com/read/27914690/c1q-as-an-autocrine-and-paracrine-regulator-of-cellular-functions
#16
REVIEW
Berhane Ghebrehiwet, Kinga H Hosszu, Ellinor I B Peerschke
Most of the complement proteins in circulation are, by and large, synthesized in the liver. However data accumulated over the past several decades provide incontrovertible evidence that some if not most of the individual complement proteins are also synthesized extrahepatically by activated as well as non-activated cells. The question that is finally being addressed by various investigators is: are the locally synthesized proteins solely responsible for the myriad of biological functions in situ without the contribution of systemic complement? The answer is probably "yes"...
November 30, 2016: Molecular Immunology
https://www.readbyqxmd.com/read/27914596/characterization-of-inflammatory-markers-associated-with-systemic-lupus-erythematosus-patients-undergoing-treatment
#17
Rodolfo Pessato Timóteo, Douglas Cobo Micheli, Reginaldo Botelho Teodoro, Marlene Freire, Dernival Bertoncello, Eddie Fernando Candido Murta, Beatriz Martins Tavares-Murta
OBJECTIVE: To characterize the inflammatory profiles of patients with systemic lupus erythematosus receiving standard treatment compared to healthy controls. PATIENTS AND METHODS: Peripheral venous blood was collected from systemic lupus erythematosus patients (n=14) and controls (n=18) at enrollment. Blood samples were used for quantification, by flow cytometry, of CD11b (integrin) and Chemokine receptor CXCR2 expression surface antigen in neutrophils and lymphocytes, while cytokines were assayed in serum samples...
November 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/27914451/effects-of-fibroin-microcarriers-on-inflammation-and-regeneration-of-deep-skin-wounds-in-mice
#18
A Y Arkhipova, M A Nosenko, N V Malyuchenko, R V Zvartsev, A M Moisenovich, A S Zhdanova, T V Vasil'eva, E A Gorshkova, I I Agapov, M S Drutskaya, S A Nedospasov, M M Moisenovich
The process of tissue regeneration following damage takes place with direct participation of the immune system. The use of biomaterials as scaffolds to facilitate healing of skin wounds is a new and interesting area of regenerative medicine and biomedical research. In many ways, the regenerative potential of biological material is related to its ability to modulate the inflammatory response. At the same time, all foreign materials, once implanted into a living tissue, to varying degree cause an immune reaction...
November 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/27914285/human-parechovirus-and-enterovirus-initiate-distinct-cns-innate-immune-responses-pathogenic-and-diagnostic-implications
#19
Danielle Fortuna, Ana María Cárdenas, Erin H Graf, Larry A Harshyne, D Craig Hooper, Michael Prosniak, John Shields, Mark T Curtis
BACKGROUND: Human parechovirus (HPeV) and enterovirus (EV) cause a range of human diseases including serious CNS infections. Little is known regarding the immune response to HPeV meningitis compared to EV meningitis or how the immune response to HPeV reflects its pathogenesis. OBJECTIVE: To characterize the innate immune response to HPeV CNS infection in order to increase our understanding of HPeV pathogenesis and possibly help identify HPeV in the clinical setting...
November 23, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27914220/modulation-of-the-innate-immune-related-genes-expression-in-h9n2-avian-influenza-virus-infected-chicken-macrophage-like-cells-hd11-in-response-to-escherichia-coli-lps-stimulation
#20
Xuefeng Qi, Caihong Liu, Ruiqiao Li, Huizhu Zhang, Xingang Xu, Jingyu Wang
Macrophages play important roles in mediating virus-induced innate immune responses and are thought to be involved in the pathogenesis of bacterial superinfections. The innate immune response initiated by both low pathogenicity AIV and bacterial superinfection in their avian host is not fully understood. We therefore determine the transcripts of innate immune-related genes following avian H9N2 AIV virus infection and E. coli LPS co-stimulation of avian macrophage-like cell line HD11 cells. More pronounced expression of pro-inflammatory cytokines (IL-6 and IL-1β) as well as the inflammatory chemokines (CXCLi1 and CXCLi2) was observed in virus infected plus LPS treated HD11 cells compared to H9N2 virus solely infected control...
November 17, 2016: Research in Veterinary Science
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