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https://www.readbyqxmd.com/read/29790117/regulatory-roles-of-mir-155-and-let-7b-on-the-expression-of-inflammation-related-genes-in-thp-1-cells-effects-of-fatty-acids
#1
J L Marques-Rocha, M Garcia-Lacarte, M Samblas, J Bressan, J A Martínez, F I Milagro
The main aim of this investigation was to study the regulatory roles of let-7b and miR-155-3p on the expression of inflammation-associated genes in monocytes, macrophages, and lipopolysaccharide (LPS)-activated macrophages (AcM). A second goal was to analyze the potential modulatory roles of different fatty acids, including oleic, palmitic, eicosapentaenoic (EPA), and docosahexaenoic (DHA), on the expression of these miRNAs in the three cell types. This hypothesis was tested in human acute monocytic leukemia cells (THP-1), which were differentiated into macrophages with 2-O-tetradecanoylphorbol-13-acetate (TPA) and further activated with LPS for 24 h...
May 22, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29783993/cirsimaritin-inhibits-influenza-a-virus-replication-by-downregulating-the-nf-%C3%AE%C2%BAb-signal-transduction-pathway
#2
Haiyan Yan, Huiqiang Wang, Linlin Ma, Xueping Ma, Jinqiu Yin, Shuo Wu, Hua Huang, Yuhuan Li
BACKGROUND: Artemisia scoparia Waldst and Kit is a famous traditional Chinese medicine widely distributed in Xinjiang, China. Flavonoids extracted from it exhibits inhibitory activities against several influenza virus strains. Despite this fact, the antiviral properties of CST, one of such flavonoids, against the influenza virus has not been reported. Thus, the aim of this study is to investigate the anti-influenza virus efficacy and antiviral mechanism of CST. METHODS: The inhibitory activity of CST against influenza viruses was assessed by using viral titers and performing Western blot, qRT-PCR, and immunofluorescence assays in Madin-Darby canine kidney (MDCK) cells and a human monocytic cell line (THP-1)...
May 21, 2018: Virology Journal
https://www.readbyqxmd.com/read/29779167/mir-199b-5p-regulates-immune-mediated-allograft-rejection-after-lung-transplantation-through-the-gsk3%C3%AE-and-nf-%C3%AE%C2%BAb-pathways
#3
Linhai Zhu, Haichao Xu, Wang Lv, Zhehao He, Peng Ye, Yiqing Wang, Jian Hu
Emerging evidence indicates that acute rejection mainly associated with the inflammatory response is an independent risk factor for chronic rejection after lung transplantation. Monocytes are the main pro-inflammatory leukocytes infiltrating around the lesions and play vital roles in triggering the acute rejection. In the rat lung transplantation model, lipopolysaccharide (LPS)-induced severe acute rejection was strongly associated with advanced chronic rejection. The exact regulatory mechanism of pro-inflammation in monocytes is not yet clear...
May 19, 2018: Inflammation
https://www.readbyqxmd.com/read/29777723/effect-of-acetylcholinesterase-inhibitors-donepezil-and-rivastigmine-on-the-activity-and-expression-of-cyclooxygenases-in-a-model-of-the-inflammatory-action-of-fluoride-on-macrophages-obtained-from-thp-1-monocytes
#4
Marta Goschorska, Irena Baranowska-Bosiacka, Izabela Gutowska, Maciej Tarnowski, Katarzyna Piotrowska, Emilia Metryka, Krzysztof Safranow, Dariusz Chlubek
Inflammation is an important factor in the development of many diseases of the central nervous system, including Alzheimer's disease and other types of dementia. ‪Given that acetylcholinesterase inhibitors are also currently believed to have anti-inflammatory properties, the purpose of this study was to investigate the effect of acetylcholinesterase inhibitors (rivastigmine, donepezil) on cyclooxygenase activity and expression using the proinflammatory action of fluoride (F- ) on cultured macrophages obtained from THP-1 monocytes...
May 16, 2018: Toxicology
https://www.readbyqxmd.com/read/29773671/targeted-inhibition-of-cd74-attenuates-adipose-cox-2-mif-mediated-m1-macrophage-polarization-and-retards-obesity-related-adipose-tissue-inflammation-and-insulin-resistance
#5
Pei-Chi Chan, Ting-Ni Wu, Ying-Chuan Chen, Chieh-Hua Lu, Martin Wabitsch, Yu-Feng Tian, Po-Shiuan Hsieh
Adipose tissue (AT) inflammation is crucial to the development of obesity-associated insulin resistance. Our aim was to investigate the contribution of COX-2/MIF-mediated crosstalk between hypertrophic adipocytes and macrophages to the etiology of AT inflammation and involvement of CD74 using human SGBS adipocytes, THP-1 macrophages and mice fed a high-fat (HF) diet. The MIF and CD74 mRNA levels in the adipocytes and SVCs (stromal vascular cells) of white fat were highly correlated with body weight, HOMA-IR and adipose macrophage marker expression levels, especially those in SVCs...
May 17, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29771377/alternative-splicing-analysis-in-human-monocytes-and-macrophages-reveals-mbnl1-as-major-regulator
#6
Hongfei Liu, Paolo A Lorenzini, Fan Zhang, Shaohai Xu, Mei Su M Wong, Jie Zheng, Xavier Roca
We report the detailed transcriptomic profiles of human innate myeloid cells using RNA sequencing. Monocytes migrate from blood into infected or wounded tissue to differentiate into macrophages, and control inflammation via phagocytosis or cytokine secretion. We differentiated culture primary monocytes with either GM- or M-CSF to obtain pro- or anti-inflammatory macrophages, and respectively activated them with either LPS/IFNγ or anti-inflammatory cytokines. We also treated the THP-1 monocytic cell line with PMA and similar cytokines to mimic differentiation and activation...
May 16, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29761921/trans-cinnamic-aldehyde-inhibit-aggregatibacter-actinomycetemcomitans-induced-inflammation-thp-1-derived-macrophages-via-autophagy-activation
#7
Jin Chung, Sumi Kim, Hyun Ah Lee, Mi Hee Park, Seyeon Kim, Yu Ri Song, HeeSam Na
OBJECTIVES: Inflammation is an essential response against bacterial infection as a host defense mechanism, which can lead to tissue damage. Aggregatibacter actinomycetemcomitans (Aa) is major pathogen for aggressive periodontitis characterized by rapid destruction of periodontal tissue surrounding teeth. Trans-cinnamic aldehyde is a key bioactive compound of the cinnamon extracts, which has anti-inflammatory, antioxidant, antipyretic, antimicrobial, and anti-cancer properties. The objective of the present study was to investigate the anti-inflammatory effect of trans-cinnamic aldehyde against Aa infection in human THP-1 derived macrophages and on Aa-induced periodontitis in mice...
May 15, 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29751125/anti-inflammatory-activities-and-potential-mechanisms-of-phenolic-acids-isolated-from-salvia-miltiorrhiza-f-alba-roots-in-thp-1-macrophages
#8
Haimei Liu, Shuli Ma, Hongrui Xia, Hongxiang Lou, Faliang Zhu, Longru Sun
ETHNOPHARMACOLOGICAL RELEVANCE: The roots of Salvia miltiorrhiza f. alba (Lamiaceae) (RSMA) are used as the Danshen, a traditional Chinese medicine, to treat the vascular diseases at local clinics, especially for the remedy of thromboangiitis obliterans (TAO) more than 100 years. Phenolic acids are one of the major effective constituents of RSMA, and some studies have linked phenolic acids with anti-inflammatory functions. AIM OF THE STUDY: The purpose of this research was to isolate phenolic acids from RSMA and investigate their anti-inflammatory effects and potential mechanisms...
May 8, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29748389/cereblon-suppresses-lipopolysaccharide-induced-inflammatory-response-through-promoting-the-ubiquitination-and-degradation-of-c-jun
#9
Jing Yang, Min Huang, Liang Zhou, Xian He, Xiaogang Jiang, Yang Zhang, Guoqiang Xu
Chronic inflammation is associated with multiple human disorders such as rheumatoid arthritis, metabolic diseases, and neurodegenerative diseases. Therefore, alleviation of inflammation induced by environment stimuli is important for disease prevention or treatment. Cereblon (CRBN) functions as a substrate receptor of the cullin-4 RING E3 ligase to mediate protein ubiquitination and degradation. Although it has been reported that CRBN reduces the inflammatory response through its non-enzymatic function, its role as a substrate receptor of the E3 ligase is not explored in mediating this process...
May 10, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29746559/comparative-genotypic-and-phenotypic-analysis-of-human-peripheral-blood-monocytes-and-surrogate-monocyte-like-cell-lines-commonly-used-in-metabolic-disease-research
#10
Darren M Riddy, Emily Goy, Philippe Delerive, Roger J Summers, Patrick M Sexton, Christopher J Langmead
Monocyte-like cell lines (MCLCs), including THP-1, HL-60 and U-937 cells, are used routinely as surrogates for isolated human peripheral blood mononuclear cells (PBMCs). To systematically evaluate these immortalised cells and PBMCs as model systems to study inflammation relevant to the pathogenesis of type II diabetes and immuno-metabolism, we compared mRNA expression of inflammation-relevant genes, cell surface expression of cluster of differentiation (CD) markers, and chemotactic responses to inflammatory stimuli...
2018: PloS One
https://www.readbyqxmd.com/read/29739752/anti-lipopolysaccharide-egg-yolk-antibody-enhance-the-phagocytosis-of-mammalian-phagocytes
#11
Xin Zhou, Siyuan Ma
Macrophages play crucial roles in combatting infectious disease by promoting inflammation and phagocytosis. The decline of macrophage phagocytic function will bring many serious consequence,include weakened pathogen clearance. As an avain antibody, IgY has been widely used in preventing and treating infectious diseases,but,whether it can enhance the phagocytic ability of mammalian macrophage in order to clear phathogens is still unknown. In this study, mouse peritoneal macrophages and THP-1 cells were cultured with anti-LPS IgY in vivo or in vitro respectively...
May 8, 2018: Biology Open
https://www.readbyqxmd.com/read/29737637/chitinase-3-like-protein-1-ameliorates-atherosclerotic-responses-via-ppar%C3%AE-mediated-suppression-of-inflammation-and-er-stress
#12
Tae Woo Jung, Hyung Sub Park, Geum Hee Choi, Daehwan Kim, Ji Hoon Jeong, Taeseung Lee
Chitinase 3-like protein 1 (CHI3L1) is a novel biomarker of systemic inflammation. However, the effects of CHI3L1 on the progression of atherosclerosis remain to be explored. In the current study, we found that CHI3L1 induces peroxisome proliferator-activated receptor delta (PPARδ) expression, leading to a dose-dependent increase in oxygen-regulated protein 150 (ORP150) expression. We demonstrated that CHI3L1 suppresses atherosclerotic reactions caused by LPS treatment via a PPARδ-dependent pathway. Treatment of HUVECs and THP-1 cells with CHI3L1 suppressed LPS-induced phosphorylation of nuclear factor kappa B (NFκB) and secretion of proinflammatory cytokines such as TNFα and MCP-1...
May 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29737518/mir-181a-inhibits-vascular-inflammation-induced-by-ox-ldl-via-targeting-tlr4-in-human-macrophages
#13
Xian-Jin Du, Jing-Min Lu, Yin Sha
Atherosclerosis is a kind of chronic inflammation disease with lipid accumulation in in blood vessel linings. Increasing evidence has reported that microRNAs can exert crucial roles in atherosclerosis. In previous study, miR-181a has been implicated to be abnormally expressed in atherosclerosis mice, however its detailed function in atherosclerosis remains uninvestigated. Hence, in our current study, we focused on the biological role of miR-181a in atherosclerosis progression. Ox-LDL has been commonly identified as an important atherosclerosis regulator...
May 8, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29734114/the-early-signaling-pathway-of-live-yeast-cell-derivative-in-thp-1-monocytes
#14
Eric I Gruenstein, Donna J Schlemm, Mridula Bethi, Stephen J Keller
Live yeast cell derivative (LYCD) is a medicinal yeast extract that has been used in the treatment of burns, wounds and hemorrhoids for over 70 years. It has been shown to enhance the closure of skin wounds in diabetic mice by increasing inflammation, angiogenesis, formation of granulation tissue and epithelial migration. An active fraction of LYCD has been identified as a mixture of peptides ranging in size from 5 kDA to 17 kDA. Despite its widespread use over many years, understanding of the mechanism by which LYCD acts to effect tissue repair responses is very limited...
April 22, 2018: Cell Calcium
https://www.readbyqxmd.com/read/29723698/erk5-klf2-activation-is-involved-in-the-reducing-effects-of-puerarin-on-monocyte-adhesion-to-endothelial-cells-and-atherosclerotic-lesion-in-apolipoprotein-e-deficient-mice
#15
Yan Deng, Tingwen Lei, Hongmei Li, Xiaochuan Mo, Zhuting Wang, Hailong Ou
Puerarin has properties of anti-oxidation and anti-inflammation, which has been demonstrated protective effects in atherosclerosis and other cardiovascular diseases. However, the detail molecular mechanism still remains unclear. Here, we determined whether the atheroprotective effect of puerarin was by reducing monocyte adhesion and explored the underlying mechanism. The results showed that puerarin dose- and time-dependently reduced oxLDL-induced monocyte THP-1 adhesion to HUVECs and the expression of adhesion-related genes such as VCAM-1, ICAM-1, MCP-1 and IL-8 in HUVECs...
April 30, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29720943/microrna-200a-200b-modulate-high-glucose-induced-endothelial-inflammation-by-targeting-o-linked-n-acetylglucosamine-transferase-expression
#16
Wan-Yu Lo, Wen-Kai Yang, Ching-Tien Peng, Wan-Yu Pai, Huang-Joe Wang
Background and Aims: Increased O -linked N -acetylglucosamine ( O -GlcNAc) modification of proteins by O -GlcNAc transferase (OGT) is associated with diabetic complications. Furthermore, oxidative stress promotes endothelial inflammation during diabetes. A previous study reported that microRNA-200 (miR-200) family members are sensitive to oxidative stress. In this study, we examined whether miR-200a and miR-200b regulate high-glucose (HG)-induced OGT expression in human aortic endothelial cells (HAECs) and whether miRNA-200a/200b downregulate OGT expression to control HG-induced endothelial inflammation...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29708655/effect-of-cobalt-ions-on-the-interaction-between-macrophages-and-titanium
#17
Mattias Pettersson, Jean Pettersson, Margareta Molin Thorén, Anders Johansson
Inflammation and bone reduction around dental implants are described as peri-implantitis and can be caused by an inflammatory response against bacterial products and toxins. Titanium (Ti) forms aggregates with serum proteins, which activate and cause release of the cytokine interleukin (IL-1β) from human macrophages. It was hypothesized that cobalt (Co) ions can interact in the formation of pro-inflammatory aggregates, formed by titanium. To test this hypothesis, we differentiated THP-1 cells into macrophages and exposed them to Ti ions alone or in combination with Co ions to investigate if IL-1β release and cytotoxicity were affected...
April 30, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29704820/upregulation-of-osteopontin-expression-via-the-interaction-of-macrophages-and-fibroblasts-under-il-1b-stimulation
#18
Takahiro Shimodaira, Kazuyuki Matsuda, Takaaki Uchibori, Mitsutoshi Sugano, Takeshi Uehara, Takayuki Honda
BACKGROUND: Fibrosis is attributed to dysregulation of tissue-remodeling. In remodeling areas, fibroblasts and macrophages actively make contact with each other. Osteopontin (OPN) is a pro-fibrotic molecule, whose expression is upregulated by interleukin (IL)-1β via secretion of its downstream cytokines, such as IL-6. Here, we investigated the effect of interaction between fibroblasts and macrophages under IL-1β stimulation on the expression of OPN. METHODS: We used human lung fibroblasts and THP-1 macrophages differentiated from THP-1 cells using phorbol 12-myristate 13-acetate...
April 25, 2018: Cytokine
https://www.readbyqxmd.com/read/29698923/anti-inflammatory-effects-of-%C3%AE-linolenic-acid-in-m1-like-macrophages-are-associated-with-enhanced-production-of-oxylipins-from-%C3%AE-linolenic-and-linoleic-acid
#19
Samantha D Pauls, Lisa A Rodway, Tanja Winter, Carla G Taylor, Peter Zahradka, Harold M Aukema
Chronic inflammation, mediated in large part by proinflammatory macrophage populations, contributes directly to the induction and perpetuation of metabolic diseases, including obesity, insulin resistance and type 2 diabetes. Polyunsaturated fatty acids (PUFAs) can have profound effects on inflammation through the formation of bioactive oxygenated metabolites called oxylipins. The objective of this study was to determine if exposure to the dietary omega-3 PUFA α-linolenic acid (ALA) can dampen the inflammatory properties of classically activated (M1-like) macrophages derived from the human THP-1 cell line and to examine the accompanying alterations in oxylipin secretion...
April 3, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29685624/folic-acid-supplementation-repressed-hypoxia-induced-inflammatory-response-via-ros-and-jak2-stat3-pathway-in-human-promyelomonocytic-cells
#20
Jing Ma, Xiaozhou Zhen, Xiaoyan Huang, Xinwei Jiang
Hypoxia is associated with inflammation and various chronic diseases. Folic acid is known to ameliorate inflammatory reactions, but the metabolism of folic acid protecting against hypoxia-induced injury is still unclear. In our study, we examined the inflammatory signal transduction pathway in human promyelomonocytic cells (THP-1 cells) with or without treatment with folic acid under hypoxic culture conditions. Our results indicated that supplementation with folic acid significantly reduced the levels of interleukin-1β and tumor necrosis factor-α in hypoxic conditions...
March 19, 2018: Nutrition Research
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