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https://www.readbyqxmd.com/read/29781885/improved-cognitive-performance-and-reduced-monocyte-activation-in-virally-suppressed-chronic-hiv-following-dual-ccr2-and-ccr5-antagonism
#1
Michelle L D'Antoni, Robert H Paul, Brooks I Mitchell, Lindsay Kohorn, Laurent Fischer, Eric Lefebvre, Star Seyedkazemi, Beau K Nakamoto, Maegen Walker, Kalpana J Kallianpur, Debra Ogata-Arakaki, Lishomwa C Ndhlovu, Cecilia Shikuma
OBJECTIVE: To evaluate changes in neuropsychological (NP) performance and in plasma and cell surface markers of peripheral monocyte activation/migration following treatment with cenicriviroc (CVC), a dual C-C chemokine receptor type 2 (CCR2) and type 5 (CCR5) antagonist, in treatment-experienced, HIV-infected individuals. SETTING: Single-arm, 24-week, open-label clinical trial. METHODS: HIV-infected individuals on antiretroviral therapy (ART) >1 year with plasma HIV RNA <50 copies/ml and below-normal cognitive performance [defined as age, gender and education-adjusted NP performance (NPZ) <-0...
May 16, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29781811/spleen-derived-classical-monocytes-mediate-lung-ischemia-reperfusion-injury-through-il-1%C3%AE
#2
Hsi-Min Hsiao, Ramiro Fernandez, Satona Tanaka, Wenjun Li, Jessica H Spahn, Stephen Chiu, Mahzad Akbarpour, Daniel Ruiz-Perez, Qiang Wu, Cem Turam, Davide Scozzi, Tsuyoshi Takahashi, Hannah P Luehmann, Varun Puri, G R Scott Budinger, Alexander S Krupnick, Alexander V Misharin, Kory J Lavine, Yongjian Liu, Andrew E Gelman, Ankit Bharat, Daniel Kreisel
Ischemia-reperfusion injury, a form of sterile inflammation, is the leading risk factor for both short-term mortality following pulmonary transplantation and chronic lung allograft dysfunction. While it is well recognized that neutrophils are critical mediators of acute lung injury, processes that guide their entry into pulmonary tissue are not well understood. Here, we found that CCR2+ classical monocytes are necessary and sufficient for mediating extravasation of neutrophils into pulmonary tissue during ischemia-reperfusion injury following hilar clamping or lung transplantation...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29771686/spleen-mediates-a-distinct-hematopoietic-progenitor-response-supporting-tumor-promoting-myelopoiesis
#3
Chong Wu, Huiheng Ning, Mingyu Liu, Jie Lin, Shufeng Luo, Wenjie Zhu, Jing Xu, Wen-Chao Wu, Jing Liang, Chun-Kui Shao, Jiaqi Ren, Bin Wei, Jun Cui, Min-Shan Chen, Limin Zheng
Cancer progression is associated with alterations of intra- and extramedullary hematopoiesis to support a systemic tumor-promoting myeloid response. However, the functional specialty, mechanism, and clinical relevance of extramedullary hematopoiesis (EMH) remain unclear. Here we showed that the heightened splenic myelopoiesis in tumor-bearing hosts was not only characterized by the accumulation of myeloid precursors, but also associated with profound functional alterations of splenic early hematopoietic stem/progenitor cells (HSPCs)...
May 17, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29765319/progression-and-regression-of-hepatic-lesions-in-a-mouse-model-of-nash-induced-by-dietary-intervention-and-its-implications-in-pharmacotherapy
#4
Zhi-Ming Ding, Yue Xiao, Xikun Wu, Haixia Zou, Shurong Yang, Yiyun Shen, Juehua Xu, Heather C Workman, Amy L Usborne, Haiqing Hua
Understanding of the temporal changes of hepatic lesions in the progression and regression of non-alcoholic steatohepatitis (NASH) is vital to elucidation of the pathogenesis of NASH, and critical to the development of a strategy for NASH pharmacotherapy. There are challenges in studying hepatic lesion progression and regression in NASH patients due to the slow development of NASH in humans, one being the requirement for multiple biopsies during the longitudinal follow-up. Here we studied lesion progression and regression in the diet-induced animal model of NASH by application or removal of the pathogenic diet for multiple time periods...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29764680/the-parasite-derived-rov-asp-1-is-an-effective-antigen-sparing-cd4-t-cell-dependent-adjuvant-for-the-trivalent-inactivated-influenza-vaccine-and-functions-in-the-absence-of-myd88-pathway
#5
Sonia Jain, Parakkal Jovvian George, Wanyan Deng, Joseph Koussa, Kaela Parkhouse, Scott E Hensley, Jiu Jiang, Jie Lu, Zhuyun Liu, Junfei Wei, Bin Zhan, Maria Elena Bottazzi, Hao Shen, Sara Lustigman
Vaccination remains the most cost-effective biomedical approach for controlling influenza disease. In times of pandemics, however, these vaccines cannot be produced in sufficient quantities for worldwide use by the current manufacturing capacities and practices. What is needed is the development of adjuvanted vaccines capable of inducing an adequate or better immune response at a decreased antigen dose. Previously we showed that the protein adjuvant rOv-ASP-1 augments influenza-specific antibody titers and survival after virus challenge in both young adult and old-age mice when administered with the trivalent inactivated influenza vaccine (IIV3)...
May 12, 2018: Vaccine
https://www.readbyqxmd.com/read/29760708/dual-tlr2-9-recognition-of-herpes-simplex-virus-infection-is-required-for-recruitment-and-activation-of-monocytes-and-nk-cells-and-restriction-of-viral-dissemination-to-the-central-nervous-system
#6
Erdenebileg Uyangaa, Jin Young Choi, Ajit Mahadev Patil, Ferdaus Mohd Altaf Hossain, Sung Ok Park, Bumseok Kim, Koanhoi Kim, Seong Kug Eo
The importance of TLR2 and TLR9 in the recognition of infection with herpes simplex virus (HSV) and HSV-caused diseases has been described, but some discrepancies remain concerning the benefits of these responses. Moreover, the impact of TLR2/9 on innate and adaptive immune responses within relevant mucosal tissues has not been elucidated using natural mucosal infection model of HSV. Here, we demonstrate that dual TLR2/9 recognition is essential to provide resistance against mucosal infection with HSV via an intravaginal route...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29751565/upregulation-of-the-chemokine-receptor-ccr2b-in-epstein%C3%A2-barr-virus-positive-burkitt-lymphoma-cell-lines-with-the-latency-iii-program
#7
Svetlana Kozireva, Zhanna Rudevica, Mikhail Baryshev, Ainars Leonciks, Elena Kashuba, Irina Kholodnyuk
CCR2 is the cognate receptor to the chemokine CCL2. CCR2⁻CCL2 signaling mediates cancer progression and metastasis dissemination. However, the role of CCR2⁻CCL2 signaling in pathogenesis of B-cell malignancies is not clear. Previously, we showed that CCR2B was upregulated in ex vivo peripheral blood B cells upon Epstein‒Barr virus (EBV) infection and in established lymphoblastoid cell lines with the EBV latency III program. EBV latency III is associated with B-cell lymphomas in immunosuppressed patients...
May 3, 2018: Viruses
https://www.readbyqxmd.com/read/29749709/bacteria-induced-susceptibility-to-candida-albicans-superinfection-in-mice-via-monocyte-methyltransferase-setdb2
#8
Chen Xiao-Ping, Zheng Hao, Li Wen-Ge, Chen Guo-Dong, Lu Jin-Xing
Systemic bacterial infections are prone to secondary Candida albicans superinfection. However, the molecular mechanisms involved remain poorly understood. In this study, a model comprising sub-lethal cecal ligation and puncture (CLP) plus C. albicans intravenous injection (i.v.) was applied to mimic the situation in superinfection. Compared with mice without systemic bacterial infection, mice with systemic bacterial infection had lower anti-fungal gene expression (including Il1b, Tnf, Il6, Ifnb, Ifng, Cxcl1, and Ccr2) in monocytes, and less inflammatory monocytes and neutrophils infiltrating into the kidney when challenged with C...
May 11, 2018: Cellular Microbiology
https://www.readbyqxmd.com/read/29745857/identification-of-novel-drug-targets-for-diamond-blackfan-anemia-based-on-rps19-gene-mutation-using-protein-protein-interaction-network
#9
Abbas Khan, Arif Ali, Muhammad Junaid, Chang Liu, Aman Chandra Kaushik, William C S Cho, Dong-Qing Wei
BACKGROUND: Diamond-Blackfan anemia (DBA) is a congenital erythroid aplasia that usually presents in infancy. In order to explore the molecular mechanisms of wild and mutated samples from DBA patients were exposed to bioinformatics investigation. Biological network of differentially expressed genes was constructed. This study aimed to identify novel therapeutic signatures in DBA and uncovered their mechanisms. The gene expression dataset of GSE14335 was used, which consists of 6 normal and 4 diseased cases...
April 24, 2018: BMC Systems Biology
https://www.readbyqxmd.com/read/29743615/human-intestinal-pro-inflammatory-cd11c-high-ccr2-cx3cr1-macrophages-but-not-their-tolerogenic-cd11c-ccr2-cx3cr1-counterparts-are-expanded-in-inflammatory-bowel-disease
#10
D Bernardo, A C Marin, S Fernández-Tomé, A Montalban-Arques, A Carrasco, E Tristán, L Ortega-Moreno, I Mora-Gutiérrez, A Díaz-Guerra, R Caminero-Fernández, P Miranda, F Casals, M Caldas, M Jiménez, S Casabona, F De la Morena, M Esteve, C Santander, M Chaparro, J P Gisbert
Although macrophages (Mϕ) maintain intestinal immune homoeostasis, there is not much available information about their subset composition, phenotype and function in the human setting. Human intestinal Mϕ (CD45+ HLA-DR+ CD14+ CD64+ ) can be divided into subsets based on the expression of CD11c, CCR2 and CX3CR1. Monocyte-like cells can be identified as CD11chigh CCR2+ CX3CR1+ cells, a phenotype also shared by circulating CD14+ monocytes. On the contrary, their Mϕ-like tissue-resident counterparts display a CD11c- CCR2- CX3CR1- phenotype...
May 9, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29740910/gene-expression-profiles-of-cd4-cd8-double-positive-t-cells-in-porcine-peripheral-blood
#11
Mie Okutani, Takamitsu Tsukahara, Yoshihiro Kato, Kikuto Fukuta, Ryo Inoue
A characteristic subset of T cells, known as double positive T cells (DPTC) and expressing both cluster of differentiation 4 (CD4) and CD8, is observed in porcine peripheral blood. Previous studies suggested that DPTC might be memory cells. However, detailed phenotypes and functions of DPTC are yet to be fully elucidated and thus, the relatedness of DPTC with memory phenotypes remains unclear. In this study, DPTC gene expression profiles in peripheral blood were analyzed by DNA microarray in Experiment 1 and compared with those of CD4 single positive T cells (4SPTC) and CD8 single positive T cells (8SPTC)...
May 8, 2018: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29739958/trpv1-and-the-mcp-1-ccr2-axis-modulate-post-uti-chronic-pain
#12
John M Rosen, Ryan E Yaggie, Patrick J Woida, Richard J Miller, Anthony J Schaeffer, David J Klumpp
The etiology of chronic pelvic pain syndromes remains unknown. In a murine urinary tract infection (UTI) model, lipopolysaccharide of uropathogenic E. coli and its receptor TLR4 are required for post-UTI chronic pain development. However, downstream mechanisms of post-UTI chronic pelvic pain remain unclear. Because the TRPV1 and MCP-1/CCR2 pathways are implicated in chronic neuropathic pain, we explored their role in post-UTI chronic pain. Mice were infected with the E. coli strain SΦ874, known to produce chronic allodynia, and treated with the TRPV1 antagonist capsazepine...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29720895/monocyte-chemoattractant-protein-1-in-antineutrophil-cytoplasmic-autoantibody-associated-vasculitis-biomarker-potential-and-association-with-polymorphisms-in-the-mcp-1-and-the-cc-chemokine-receptor-2-gene
#13
Nina Jönsson, Evelina Erlandsson, Lena Gunnarsson, Åsa Pettersson, Sophie Ohlsson
Antineutrophil cytoplasmic autoantibody- (ANCA-) associated vasculitis (AAV) are relapsing-remitting disorders with unpredictable prognosis. There is a need of biomarkers for distinguishing which patients will have a more severe outcome and also for predicting relapses in disease activity. This study confirms the previous results of urinary MCP-1 (uMCP-1) as a prognostic marker and explores its potential as a marker of disease activity. Method . 114 patients with AAV were followed regularly between 2002 and 2011 at Skåne University Hospital...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29720578/targeting-inflammatory-monocytes-in-sepsis-associated-encephalopathy-and-long-term-cognitive-impairment
#14
Graciela Andonegui, Erin L Zelinski, Courtney L Schubert, Derrice Knight, Laura A Craig, Brent W Winston, Simon C Spanswick, Björn Petri, Craig N Jenne, Janice C Sutherland, Rita Nguyen, Natalie Jayawardena, Margaret M Kelly, Christopher J Doig, Robert J Sutherland, Paul Kubes
Sepsis-associated encephalopathy manifesting as delirium is a common problem in critical care medicine. In this study, patients that had delirium due to sepsis had significant cognitive impairments at 12-18 months after hospital discharge when compared with controls and Cambridge Neuropsychological Automated Test Battery-standardized scores in spatial recognition memory, pattern recognition memory, and delayed-matching-to-sample tests but not other cognitive functions. A mouse model of S. pneumoniae pneumonia-induced sepsis, which modeled numerous aspects of the human sepsis-associated multiorgan dysfunction, including encephalopathy, also revealed similar deficits in spatial memory but not new task learning...
May 3, 2018: JCI Insight
https://www.readbyqxmd.com/read/29719241/a-unidirectional-transition-from-migratory-to-perivascular-macrophage-is-required-for-tumor-cell-intravasation
#15
Esther N Arwert, Allison S Harney, David Entenberg, Yarong Wang, Erik Sahai, Jeffrey W Pollard, John S Condeelis
Tumor-associated macrophages (TAMs) are critical for tumor metastasis. Two TAM subsets support cancer cell intravasation: migratory macrophages guide cancer cells toward blood vessels, where sessile perivascular macrophages assist their entry into the blood. However, little is known about the inter-relationship between these functionally distinct TAMs or their possible inter-conversion. We show that motile, streaming TAMs are newly arrived monocytes, recruited via CCR2 signaling, that then differentiate into the sessile perivascular macrophages...
May 1, 2018: Cell Reports
https://www.readbyqxmd.com/read/29706965/transcription-factor-sox5-promotes-the-migration-and-invasion-of-fibroblast-like-synoviocytes-in-part-by-regulating-mmp-9-expression-in-collagen-induced-arthritis
#16
Yumeng Shi, Qin Wu, Wenhua Xuan, Xiaoke Feng, Fang Wang, Betty P Tsao, Miaojia Zhang, Wenfeng Tan
Objectives: Fibroblast-like synoviocytes (FLS) exhibit a unique aggressive phenotype in rheumatoid arthritis (RA). Increased FLS migration and subsequent invasion of the extracellular matrix are essential to joint destruction in RA. Our previous research reported that transcription factor SOX5 was highly expressed in RA-FLS. Here, the effects of SOX5 in RA-FLS migration and invasion will be investigated. Methods: The migration and invasion of RA-FLS were evaluated using a transwell chamber assay...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29705291/macrophages-promote-wound-induced-hair-follicle-regeneration-in-a-cx-3-cr1-and-tgf%C3%AE-1-dependent-manner
#17
Waleed Rahmani, Yunan Liu, Nicole L Rosin, Adrienne Kline, Eko Raharjo, Jessica Yoon, Jo Anne Stratton, Sarthak Sinha, Jeff Biernaskie
Hair follicle (HF) stem cells are regulated by intrafollicular and extrafollicular niche signals. Appropriate HF regeneration relies on the coordinated release and integration of these signals. How immune cells, particularly cutaneous macrophages, influence the HF stem cell niche and regeneration is not well understood. We took advantage of wound-induced hair growth (WIHG) to explore the relationship between wound macrophages and HF regeneration. First, we show that WIHG is dependent upon CD11b+ F4/80+ macrophages between 7-11 days post-injury...
April 26, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29704821/chemokine-receptor-antagonist-block-inflammation-and-therapy-japanese-encephalitis-virus-infection-in-mouse-model
#18
Ke Liu, Changguang Xiao, Feifei Wang, Xiao Xiang, Anni Ou, Jianchao Wei, Beibei Li, Donghua Shao, Denian Miao, Fanfan Zhao, Gang Long, Yafeng Qiu, Huaimin Zhu, Zhiyong Ma
Japanese encephalitis (JE) is a viral encephalitis disease caused by infection with the Japanese encephalitis virus (JEV). The virus can cross the blood-brain barrier and cause death or long-term sequela in infected humans or animals. In this study, we first investigated the distribution of JEV infection in brain and further analyzed the dynamic change in inflammation related genes, chemokines, as well as pathological characteristics. Results demonstrated that CCR2 and CCR5 antagonist could significantly inhibit the inflammation...
April 25, 2018: Cytokine
https://www.readbyqxmd.com/read/29704322/macrophage-phenotype-in-the-epigallocatechin-3-gallate-egcg-modified-collagen-determines-foreign-body-reaction
#19
Chenyu Chu, Li Liu, Yufei Wang, Shimin Wei, Yuanjing Wang, Yi Man, Yili Qu
Collagen has been widely used in guided bone regeneration, and the implantation of collagen membranes will elicit the foreign body reaction (FBR). The imbalance of FBR often leads to failure of dental implants. Therefore, modulation of the FBR after implantation of collagen membranes becomes increasingly important. Macrophages, pivotal in FBR, have been distinguished into pro-inflammatory (M1) and anti-inflammatory (M2) phenotypes. Epigallocatechin-3-gallate (EGCG)-modified collagen membranes have been previously shown to regulate secretion of inflammatory factors...
April 28, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29697532/chemokine-c-c-motif-receptor-2-mediates-mechanical-and-cold-hypersensitivity-in-sickle-cell-disease-mice
#20
Katelyn E Sadler, Katherine J Zappia, Crystal L O'Hara, Sarah N Langer, Andy D Weyer, Cheryl A Hillery, Cheryl L Stucky
Approximately one third of individuals with sickle cell disease (SCD) develop chronic pain. This debilitating pain is inadequately treated because the underlying mechanisms driving the pain are poorly understood. In addition to persistent pain, SCD patients are also in a tonically pro-inflammatory state. Previous studies have revealed that there are elevated plasma levels of many inflammatory mediators including chemokine (c-c motif) ligand 2 (CCL2) in individuals with SCD. Using a transgenic mouse model of SCD, we investigated the contributions of CCL2 signaling to SCD-related pain...
April 23, 2018: Pain
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