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Monocyte pathogenesis

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https://www.readbyqxmd.com/read/28917273/mechanisms-and-risk-factors-of-thrombosis-in-cancer
#1
REVIEW
Anna Falanga, Laura Russo, Viola Milesi, Alfonso Vignoli
The close relationship between cancer and thrombosis is known since more than a century. Venous thromboembolism (VTE) may be the first manifestation of an occult malignancy in an otherwise healthy individual. Cancer patients commonly present with abnormalities of laboratory coagulation tests, indicating an ongoing subclinical hypercoagulable condition. The results of laboratory tests demonstrate that a process of fibrin formation and removal parallels the development of malignancy, which is of particular interest since fibrin and other clotting products are important for both thrombogenesis and tumor progression...
October 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28916184/role-of-the-il-12-il-35-balance-in-sj%C3%A3-gren-s-syndrome
#2
Olivier Fogel, Elodie Rivière, Raphaèle Seror, Gaetane Nocturne, Saida Boudaoud, Bineta Ly, Jacques-Eric Gottenberg, Véronique Le Guern, Jean-Jacques Dubost, Joanne Nititham, Kimberly E Taylor, Philippe Chanson, Philippe Dieudé, Lindsey A Criswell, Bernd Jagla, Alice Thai, Michael Mingueneau, Xavier Mariette, Corinne Miceli-Richard
BACKGROUND: An interferon (IFN) signature is involved in the pathogenesis of primary Sjögren's syndrome (pSS), but whether the signature is type 1 or 2 remains controversial. Mouse models and genetic studies suggested the involvement of T helper 1 and type 2 IFN pathways. Likewise, polymorphisms of interleukin 12A gene (IL-12A), which encodes for IL-12p35, have been associated with pSS. IL-12p35 subunit is shared by 2 heterodimers, IL-12 and IL-35. OBJECTIVE: To confirm the genetic association of IL-12A polymorphism and pSS and elucidate the involvement of the IL-12/IL-35 balance in pSS by functional studies...
September 12, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28915836/changes-in-dna-methylation-in-na%C3%A3-ve-t-helper-cells-regulate-the-pathophysiological-state-in-minimal-change-nephrotic-syndrome
#3
Yasuko Kobayashi, Akira Aizawa, Takumi Takizawa, Katsuhide Igarashi, Izuho Hatada, Hirokazu Arakawa
BACKGROUND: DNA methylation plays a crucial role in regulating transcription, and changes in DNA methylation affect gene expression and disease development. Minimal change nephrotic syndrome (MCNS) has been reported to involve immunological disturbances. Since the characteristic features of the disease include recurrent relapse and sex and age preference, the disease pathogenesis may be partly related to epigenetic changes. However, little is known about these changes. METHODS: We analyzed genome-wide DNA methylation using the microarray-based integrated analysis of methylation by isoschizomers method...
September 15, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28914666/the-regulation-and-importance-of-monocyte-chemoattractant-protein-1
#4
Vanessa Bianconi, Amirhossein Sahebkar, Stephen L Atkin, Matteo Pirro
PURPOSE OF REVIEW: Monocyte chemoattractant protein (MCP)-1, a chemokine regulating monocyte chemotaxis and T-lymphocyte differentiation by binding to the CC chemokine receptor 2 (CCR2), plays a crucial role in the pathogenesis of inflammatory diseases, atherosclerosis and cancer. This review summarizes the current knowledge on the regulation and importance of the MCP-1/CCR2 axis, focusing on the therapeutic potential of its inhibition. RECENT FINDINGS: Differential modulation of MCP-1 and CCR2 lead to downstream activation pathways, pathogenetic to differing disease conditions characterized by dysregulated monocyte/macrophage tissue recruitment...
September 13, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28912781/microrna-dynamic-regulators-of-macrophage-polarization-and-plasticity
#5
REVIEW
Jezrom Bokcaerin Self-Fordham, Afsar Raza Naqvi, Juhi Raju Uttamani, Varun Kulkarni, Salvador Nares
The ability of a healthy immune system to clear the plethora of antigens it encounters incessantly relies on the enormous plasticity displayed by the comprising cell types. Macrophages (MΦs) are crucial member of the mononuclear phagocyte system (MPS) that constantly patrol the peripheral tissues and are actively recruited to the sites of injury and infection. In tissues, infiltrating monocytes replenish MΦ. Under the guidance of the local micro-milieu, MΦ can be activated to acquire specialized functional phenotypes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28911981/peripheral-immune-cells-infiltrate-into-sites-of-secondary-neurodegeneration-after-ischemic-stroke
#6
K A Jones, S Maltby, M W Plank, M Kluge, M Nilsson, P S Foster, F R Walker
Experimental stroke leads to microglia activation and progressive neuronal loss at sites of secondary neurodegeneration (SND). These lesions are remote from, but synaptically connected to, primary infarction sites. Previous studies have demonstrated that immune cells are present in sites of infarction in the first hours and days after stroke, and are associated with increased neurodegeneration in peri-infarct regions. However, it is not known whether immune cells are also present in more distal sites where SND occurs...
September 11, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28911528/macrophages-in-oxidative-stress-and-models-to-evaluate-the-antioxidant-function-of-dietary-natural-compounds
#7
REVIEW
Omir Adrian Castaneda, Sheng-Chi Lee, Chi-Tang Ho, Tzou-Chi Huang
Antioxidant testing of natural products has attracted increasing interest in recent years, mainly due to the fact that an antioxidant-rich diet might provide health benefits. Activated macrophages are a major source of reactive oxygen species, reactive nitrogen species, and peroxynitrite generated through the so-called respiratory burst. Constitutively released proinflammatory cytokine, especially tumor necrosis factor-α, triggers nuclear factor-κB, and activator protein-1 translocation leading to the over production of reactive oxygen species and reactive nitrogen species in macrophages...
January 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910194/chikungunya-virus-induced-arthritis-role-of-host-and-viral-factors-in-the-pathogenesis
#8
Sarika Amdekar, Deepti Parashar, Kalichamy Alagarasu
Chikungunya virus (CHIKV), a member of Alphavirus genus, is responsible for chikungunya fever (CHIKF), which is characterized by the presence of fever, rash, myalgia, and arthralgia. Reemergence of CHIKV has become a significant public health concern in Asian and African countries and is newly emerging in the Middle East, Pacific, American, and European countries. Cytokines, innate (monocytes, natural killer cells) and adaptive immune response (role of B cells and T cells i.e. CD4(+) and CD8(+)), and/or viral factors contribute to CHIKV-induced arthritis...
September 14, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28901429/monocytic-cell-junction-proteins-serve-important-roles-in-atherosclerosis-via-the-endoglin-pathway
#9
Lina Chen, Zhongliang Chen, Menghua Ge, Oushan Tang, Yinhong Cheng, Haoliang Zhou, Yu Shen, Fengming Qin
The formation of atherosclerosis is recognized to be caused by multiple factors including pathogenesis in monocytes during inflammation. The current study provided evidence that monocytic junctions were significantly altered in patients with atherosclerosis, which suggested an association between cell junctions and atherosclerosis. Claudin‑1, occludin‑1 and ZO‑1 were significantly enhanced in atherosclerosis, indicating that the tight junction pathway was activated during the pathogenesis of atherosclerosis...
September 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28901203/the-role-of-monocyte-percentage-in-osteoporosis-in-male-rheumatic-diseases
#10
Yu-Jih Su, Chao Tung Chen, Nai-Wen Tsai, Chih-Cheng Huang, Hung-Chen Wang, Chia-Te Kung, Wei-Che Lin, Ben-Chung Cheng, Chih-Min Su, Sheng-Yuan Hsiao, Cheng-Hsien Lu
Osteoporosis is easily overlooked in male patients, especially in the field of rheumatic diseases mostly prevalent with female patients, and its link to pathogenesis is still lacking. Attenuated monocyte apoptosis from a transcriptome-wide expression study illustrates the role of monocytes in osteoporosis. This study tested the hypothesis that the monocyte percentage among leukocytes could be a biomarker of osteoporosis in rheumatic diseases. Eighty-seven males with rheumatic diseases were evaluated in rheumatology outpatient clinics for bone mineral density (BMD) and surrogate markers, such as routine peripheral blood parameters and autoantibodies...
September 1, 2017: American Journal of Men's Health
https://www.readbyqxmd.com/read/28899907/a-novel-function-of-cxcl10-in-mediating-monocyte-production-of-proinflammatory-cytokines
#11
Qihong Zhao, Taeg Kim, Jian Pang, Wendy Sun, Xiaoxia Yang, Jinhong Wang, Yunling Song, Hongwei Zhang, Huadong Sun, Vangipuram Rangan, Shrikant Deshpande, Huaping Tang, Mary Ellen Cvijic, Richard Westhouse, Timothy Olah, Jenny Xie, Mary Struthers, Luisa Salter-Cid
IFN-γ-inducible protein 10 (CXCL10), a chemokine that is abundantly secreted in response to inflammatory stimuli, has been implicated in the pathogenesis of multiple inflammatory diseases, such as inflammatory bowel disease. Whereas CXCL10 is traditionally recognized for recruiting pathogenic T cells to inflamed sites, its nonchemotactic role during inflammation remains poorly defined. In this report, we identified a novel function of CXCL10 in the regulation of the inflammatory potential of human monocytes to produce cytokines...
September 12, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28898718/interleukin-17-regulates-shp-2-and-il-17ra-stat-3-dependent-cyr61-il-23-and-gm-csf-expression-and-rankl-mediated-osteoclastogenesis-by-fibroblast-like-synoviocytes-in-rheumatoid-arthritis
#12
Ramamoorthi Ganesan, Mahaboobkhan Rasool
Interleukin (IL)-17 predominately produced by the Th17 cells, plays a crucial role in the fibroblast-like synoviocytes (FLS) mediated disease process of rheumatoid arthritis (RA). IL-17 exerts its pathogenic effects in RA-FLS by IL-17/IL-17RA/STAT-3 signaling. Recent studies have shown that RA-FLS produces SHP-2, Cyr61, IL-23, GM-CSF and RANKL which results in worsening of the disease. However, whether IL-17/IL-17RA/STAT-3 signaling regulates SHP-2, Cyr61, IL-23, GM-CSF and RANKL expressions in RA-FLS remains unknown...
September 9, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28894045/neopterin-as-a-marker-of-cellular-immunological-response
#13
Łukasz Michalak, Magdalena Bulska, Karolina Strząbała, Piotr Szcześniak
Neopterin is a pyrazino-pyrimidine compound that belongs to the pteridine group. It is known to be a biochemical marker associated with cell-mediated immunity. It is produced by human monocytes/macrophages and dendritic cells from guanosine triphosphate (GTP) upon stimulation with interferon gamma (IFNγ), which is released by activated limphocytes Th. Neopterin is a very important clinic parameter, though the physiological role has not been exactly definited thus far. The level of neopterin reflects the stage of activation of the cellular immune system, which is important in the pathogenesis and progression of various diseases...
August 24, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28891938/time-course-of-the-phenotype-of-blood-and-bone-marrow-monocytes-and-macrophages-in-the-lung-after-cigarette-smoke-exposure-in-vivo
#14
Camila Oliveira da Silva, Andréa Monte-Alto-Costa, Mariana Renovato-Martins, Filipe Jorge Viana Nascimento, Samuel Dos Santos Valença, Vincent Lagente, Luís Cristóvão Pôrto, Tatiana Victoni
Alveolar macrophages play a central role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Monocytes are recruited from blood during inflammation and then mature into alveolar macrophages. The aim of this study was to investigate the effect of cigarette smoke (CS) at different times in lung macrophages and monocytes from blood and bone marrow in mice. Male mice (C57BL/6, n = 45) were divided into groups: control, CS 5 days, CS 14 days and CS 30 days. Five days' CS exposure induced a pronounced influx of neutrophils and macrophages in the lung associated with increased levels of keratinocyte chemoattractant (KC), tumor necrosis factor-α (TNF-α), nitric oxide (NO) and matrix metalloproteinase (MMP)-12...
September 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28888077/microrna-214-3p-a-link-between-autophagy-and-endothelial-cell-dysfunction-in-atherosclerosis
#15
Jing Wang, Wei-Na Wang, Shuang-Bin Xu, Hong Wu, Bing Dai, Dong-Dong Jian, Mei Yang, Yu-Tao Wu, Qiang Feng, Jian-Hua Zhu, Lei Zhang, Li Zhang
AIM: Endothelial cell injury assumes a fundamental part in the pathogenesis of atherosclerosis, and endothelial cell autophagy has protective effects on the development of atherosclerosis, though the underlying molecular regulation mechanism is indistinct. This study is aimed to investigate whether microRNA-214-3p (miR-214-3p) is involved in the endothelial cell autophagy regulation of atherosclerosis. METHODS: We utilized ApoE-/- mice provided with a high-fat diet (HFD) as atherosclerosis model...
September 9, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28881659/sirt1-inhibition-promotes-atherosclerosis-through-impaired-autophagy
#16
Xiaofeng Yang, Jingyuan Wei, Yanhao He, Ting Jing, Yanxiang Li, Yunfang Xiao, Bo Wang, Weirong Wang, Jiye Zhang, Rong Lin
SIRT1, a highly conserved NAD(+)-dependent protein deacetylase, plays a pivotal role in the pathogenesis and therapy of atherosclerosis (AS). The aim of this study is to investigate the potential effects of SIRT1 on AS in ApoE(-/-) mice and the underlying mechanisms of autophagy in an ox-LDL-stimulated human monocyte cell line, THP-1. In vivo, the accelerated atherosclerotic progression of mice was established by carotid collar placement; then, mice were treated for 4 weeks with a SIRT1-specific inhibitor, EX-527...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28879249/gingival-fluid-inflammatory-biomarkers-and-hypertension-in-african-americans
#17
A Khocht, T Rogers, M N Janal, M Brown
Hypertension and periodontitis are highly prevalent among African Americans. This cross-sectional study investigated the relationships among inflammatory biomarkers in the gingival fluid, periodontitis, and blood pressure in these individuals. Twenty-one subjects who reported a diagnosis of hypertension and a comparison group of 26 nonhypertensive participants were enrolled. All were African Americans, non-cigarette smoking, and free from other systemic illness. Blood pressure and body mass index were assessed...
July 2017: JDR Clinical and Translational Research
https://www.readbyqxmd.com/read/28878767/human-blood-cd1c-dendritic-cells-promote-th1-and-th17-effector-function-in-memory-cd4-t-cells
#18
Ingrid M Leal Rojas, Wai-Hong Mok, Frances E Pearson, Yoshihito Minoda, Tony J Kenna, Ross T Barnard, Kristen J Radford
Dendritic cells (DC) initiate the differentiation of CD4(+) helper T cells into effector cells including Th1 and Th17 responses that play an important role in inflammation and autoimmune disease pathogenesis. In mice, Th1 and Th17 responses are regulated by different conventional (c) DC subsets, with cDC1 being the main producers of IL-12p70 and inducers of Th1 responses, while cDC2 produce IL-23 to promote Th17 responses. The role that human DC subsets play in memory CD4(+) T cell activation is not known. This study investigated production of Th1 promoting cytokine IL-12p70, and Th17 promoting cytokines, IL-1β, IL-6, and IL-23, by human blood monocytes, CD1c(+) DC, CD141(+) DC, and plasmacytoid DC and examined their ability to induce Th1 and Th17 responses in memory CD4(+) T cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28875271/comparative-effects-of-schisandrin-a-b-and-c-on-acne-related-inflammation
#19
Miaomiao Guo, Faliang An, Xing Wei, Minhua Hong, Yanhua Lu
Inflammatory responses induced by Propionibacterium acnes are a major etiological factor in the pathogenesis of acne vulgaris. Schisandrin A, schisandrin B, and schisandrin C are the representative lignans of Schisandra chinensis (Turcz.) Baill. extract. Although anti-inflammatory effects of the lignans have been shown, their effects on acne-related inflammation caused by P. acnes have not been investigated and compared. We pretreated THP-1 human monocytic cells with 5, 10, and 20 μM schisandrin A, B, and C, and stimulated the cells with P...
September 5, 2017: Inflammation
https://www.readbyqxmd.com/read/28874759/prior-exposure-to-zika-virus-significantly-enhances-peak-dengue-2-viremia-in-rhesus-macaques
#20
Jeffy George, William G Valiant, Mary J Mattapallil, Michelle Walker, Yan-Jang S Huang, Dana L Vanlandingham, John Misamore, Jack Greenhouse, Deborah E Weiss, Daniela Verthelyi, Stephen Higgs, Hanne Andersen, Mark G Lewis, Joseph J Mattapallil
Structural and functional homologies between the Zika and Dengue viruses' envelope proteins raise the possibility that cross-reactive antibodies induced following Zika virus infection might enhance subsequent Dengue infection. Using the rhesus macaque model we show that prior infection with Zika virus leads to a significant enhancement of Dengue-2 viremia that is accompanied by neutropenia, lympocytosis, hyperglycemia, and higher reticulocyte counts, along with the activation of pro-inflammatory monocyte subsets and release of inflammatory mediators...
September 5, 2017: Scientific Reports
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