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https://www.readbyqxmd.com/read/28647517/proteomics-to-study-macrophage-response-to-viral-infection
#1
Tuula A Nyman, Sampsa Matikainen
Viral infections are a major burden to human and animal health. Immune response against viruses consists of innate and adaptive immunity which are both critical for the eradication of the viral infection. The innate immune system is the first line of defense against viral infections. Proper innate immune response is required for the activation of adaptive, humoral and cell-mediated immunity. Macrophages are innate immune cells which have a central role in detecting viral infections including influenza A and human immunodeficiency viruses...
June 21, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28645655/5-lipoxygenase-in-monocytes-emerges-as-a-therapeutic-target-for-intimal-hyperplasia-in-a-murine-wire-injured-femoral-artery
#2
Seung Eun Baek, Min A Jang, Seung Jin Lee, So Youn Park, Sun Sik Bae, Chi Dae Kim
Given the importance of leukotrienes in vascular inflammation induced by local tissue injury, this study investigated the role for 5-lipoxygenase (5-LO) in monocytes in the development of intimal hyperplasia. As a mechanistic study, the importance of monocyte 5-LO in monocyte-macrophage differentiation with subsequent infiltration in neointima was evaluated. In a mouse model of wire-injured femoral artery, intimal hyperplasia started as early as 2 wks after injury, and luminal area and blood flow were reduced due to increased neointima formation...
June 20, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28644609/galnac-tyrosine-is-a-ligand-of-plant-lectins-antibodies-and-human-and-murine-macrophage-galactose-type-lectins
#3
Ruslan Gibadullin, David Wayne Farnsworth, Joseph J Barchi, Jeffrey C Gildersleeve
In 2011, a new type of protein O-glycosylation was discovered in which N-acetylgalactosamine is attached to the side chain of tyrosine (GalNAc-Tyr). While present on dozens of proteins, the biological roles of GalNAc-Tyr are unknown. To gain insight into this new type of modification, we synthesized a group of GalNAc-Tyr glycopeptides, constructed microarrays, and evaluated potential recognition of GalNAc-Tyr by a series of glycan-binding proteins. Through a series of >150 microarray experiments, we assessed binding properties of a variety of plant lectins, monoclonal antibodies, and endogenous lectins...
June 23, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28642238/ager-deletion-enhances-ischemic-muscle-inflammation-neoangiogenesis-and-blood-flow-recovery-in-diabetic-mice
#4
Raquel Lopez Diez, Xiaoping Shen, Gurdip Daffu, Md Khursheed, Jiyuan Hu, Fei Song, Rosa Rosario, Yunlu Xu, Qing Li, Xiangmei Xi, Yu Shan Zou, Huilin Li, Ann Marie Schmidt, Shi Fang Yan
OBJECTIVE: Diabetic subjects are at higher risk of ischemic peripheral vascular disease. We tested the hypothesis that advanced glycation end products (AGEs) and their receptor (RAGE) block neoangiogenesis and blood flow recovery after hindlimb ischemia induced by femoral artery ligation through modulation of immune/inflammatory mechanisms. APPROACH AND RESULTS: Wild-type mice rendered diabetic with streptozotocin and subjected to unilateral femoral artery ligation displayed increased accumulation and expression of AGEs and RAGE in ischemic muscle...
June 22, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28640832/sarpogrelate-hydrochloride-ameliorates-diabetic-nephropathy-associated-with-inhibition-of-macrophage-activity-and-inflammatory-reaction-in-db-db-mice
#5
Eun Soo Lee, Mi Young Lee, Mi-Hye Kwon, Hong Min Kim, Jeong Suk Kang, You Mi Kim, Eun Young Lee, Choon Hee Chung
The aim of this study was to evaluate the effects of sarpogrelate hydrochloride (SH), a selective serotonin 2A receptor antagonist, on diabetic nephropathy in a type 2 diabetes mouse model. We treated db/m and db/db mice with SH (30 mg/kg/day) for 12 weeks. Rat renal proximal tubule cells (NRK-52E) and mouse macrophages (Raw 264.7) were stimulated by high glucose (30 mM glucose) or LPS (100 ng/ml) with or without SH (20 μM). We found that SH treatment increased serum adiponectin level and decreased urinary albumin, macrophage infiltration to glomeruli, and renal inflammatory and fibrosis signals, which were highly expressed in diabetic mice...
2017: PloS One
https://www.readbyqxmd.com/read/28638152/combination-of-a-high-fat-diet-with-sweetened-condensed-milk-exacerbates-inflammation-and-insulin-resistance-induced-by-each-separately-in-mice
#6
Laureane Nunes Masi, Amanda Roque Martins, Amanda Rabello Crisma, Cátia Lira do Amaral, Mariana Rodrigues Davanso, Tamires Duarte Afonso Serdan, Roberta Dourado Cavalcante da Cunha de Sá, Maysa Mariana Cruz, Maria Isabel Cardoso Alonso-Vale, Rosângela Pavan Torres, Jorge Mancini-Filho, Joice Naiara Bertaglia Pereira, Marta Maria da Silva Righetti, Edson Aparecido Liberti, Sandro Massao Hirabara, Rui Curi
Obesogenic diets increase body weight and cause insulin resistance (IR), however, the association of these changes with the main macronutrient in the diet remains to be elucidated. Male C57BL/6 mice were fed with: control (CD), CD and sweetened condensed milk (HS), high-fat (HF), and HF and condensed milk (HSHF). After 2 months, increased body weight, glucose intolerance, adipocyte size and cholesterol levels were observed. As compared with CD, HS ingested the same amount of calories whereas HF and HSHF ingested less...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28637471/enhanced-humoural-and-cellular-immune-responses-to-influenza-h7n9-antigen-ha1-2-fused-with-flagellin-in-chickens
#7
Li Song, Dan Xiong, Maozhi Hu, Xilong Kang, Zhiming Pan, Xinan Jiao
BACKGROUND: Sudden increases in the number of human A (H7N9) cases reported during December and January have been observed in previous years. Most reported infection cases are due to prior exposure to live poultry or potentially contaminated environments. Low pathogenicity of influenza A (H7N9) virus in avian species complicates timely discovery of infected birds. Therefore, there is a pressing need to develop safe and effective anti-H7N9 vaccines for poultry to reduce the risk of human infection and prevent the emergence of novel mutated strains...
June 21, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28637359/decreased-paraoxonase-2-enzymatic-activity-in-monocyte-macrophages-cells-a-comparative-in-vivo-and-in-vitro-study-for-diabetes
#8
D Lixandru, P Alexandru, A Mihai, A Roşca, C Ionescu-Tîrgovişte, L I Braşoveanu, B Manuel-Y-Keenoy
Aim To investigate peripheral blood monocytes/macrophages (Mo/Mø) paraoxonase2 (PON2) in diabetes and the factors modulating its activity. Methods 118 patients with newly diagnosed uncomplicated type 2 diabetes mellitus were compared regarding clinical, biochemical and oxidative stress parameters with 80 healthy subjects. The capacity of the peripheral blood mononuclear cells (PBMNC) to release pro-oxidants and to neutralize them was determined by measuring the respiratory burst (RB) and the intracellular antioxidant enzyme PON2...
June 21, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28635324/gliptins-suppress-inflammatory-macrophage-activation-to-mitigate-inflammation-fibrosis-oxidative-stress-and-vascular-dysfunction-in-models-of-non-alcoholic-steatohepatitis-and-liver-fibrosis
#9
Xiaoyu Wang, Michael Hausding, Shih-Yen Weng, Yong Ook Kim, Sebastian Steven, Thomas Klein, Andreas Daiber, Detlef Schuppan
AIMS: Non-alcoholic steatohepatitis (NASH) is characterized by steatosis, panlobular inflammation, liver fibrosis and increased cardiovascular mortality. Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are indirect glucagon like peptide 1 (GLP-1) agonists with antidiabetic and anti-inflammatory activity, used for the treatment of type 2 diabetes. Their potential and underlying mechanisms to treat metabolic liver inflammation and fibrosis as well as the associated vascular dysfunction remain to be explored...
June 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28634213/omega-3-fatty-acids-increase-the-unfolded-protein-response-and-improve-amyloid-%C3%AE-phagocytosis-by-macrophages-of-patients-with-mild-cognitive-impairment
#10
Henry M Olivera-Perez, Larry Lam, Johnny Dang, Weilan Jiang, Fabian Rodriguez, Elizabeth Rigali, Sarah Weitzman, Verna Porter, Liudmilla Rubi, Marco Morselli, Matteo Pellegrini, Milan Fiala
Mϕs of patients with Alzheimer's disease and mild cognitive impairment (MCI) are defective in amyloid-β1-42 (Aβ) phagocytosis and have low resistance to apoptosis by Aβ. ω-3 in vitro and in vivo and the ω-3 mediator, resolvin D1, in vitro increase Aβ phagocytosis by Mϕs of patients with MCI. We have investigated the unfolded protein response (UPR) to endoplasmic reticulum (ER) stress by Mϕs in a longitudinal study of fish-derived, ω-3-supplemented patients with MCI. Patients in the apolipoprotein E (ApoE)e3/e3 subgroup over time exhibited an increase of protein kinase RNA-like ER kinase (PERK) expression, Aβ phagocytosis, intermediate M1-M2 Mϕ type, and a Mini-Mental State Examination (MMSE) rate of change of +1...
June 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28633597/effect-of-t-2-toxin-injected-shrimp-muscle-extracts-on-mouse-macrophage-cells-raw264-7
#11
Zhanrui Huang, Yaling Wang, Mei Qiu, Lijun Sun, Jianmeng Liao, Rundong Wang, Xiaodong Sun, Siyuan Bi, Ravi Gooneratne
Following intramuscular injections of 0.1 mL, 3 mg kg(-1 )BW(-1)(1/10 LD50) T-2 toxin (T-2), the tissue concentration of T-2 in shrimp was quantitatively detected using LC-MS/MS. The biological half-time (t1/2) of T-2 in blood was 40.47 ± 0.24 min. The highest number of intramuscular T-2 shrimp could tolerate when given at blood t1/2 intervals was 4. The shrimps which were injected 5 T-2 died. The T-2 toxin highest accumulation was 0.471 ± 0.012 ng g(-1 )BW(-1). The effect of toxic shrimp muscle subjected to different processing conditions (high pressure, trifluoroacetic acid, acid and alkali digestions, artificial digestive juice [to simulate exposure to gastric and intestinal juices]) on mouse macrophage cells (RAW267...
February 10, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28633482/markers-of-adipogenesis-but-not-inflammation-in-adipose-tissue-are-independently-related-to-insulin-sensitivity
#12
Natalia Matulewicz, Magdalena Stefanowicz, Agnieszka Nikolajuk, Monika Karczewska-Kupczewska
Context: In obesity, adipose tissue (AT) undergoes dynamic remodeling, including an alternations in adipogenesis, AT-resident cell content, angiogenesis and turnover of extracellular matrix (ECM) components. Studies on AT in humans have been carried out mostly on people with severe metabolic abnormalities, like type 2 diabetes or morbid obesity. Objective: The purpose of the present study was to investigate subcutaneous AT gene expression of markers of adipogenesis, ECM remodeling and inflammation in young, healthy, overweight or obese subjects...
June 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28630066/porphyromonas-gulae-activates-unprimed-and-ifn%C3%AE-primed-macrophages-via-the-pattern-recognition-receptors-tlr-2-tlr-4-and-nod2
#13
James A Holden, Neil M O'Brien-Simpson, Jason C Lenzo, Rebecca K H Orth, Ashley Mansell, Eric C Reynolds
Porphyromonas gulae is an anaerobic, Gram-negative coccobacillus that has been associated with periodontal disease in companion animals. The aims of this study were to analyse the ligation of pattern recognition receptors by P. gulae and the subsequent activation of macrophages. Exposure of HEK cells transfected with Toll-like receptors or NOD-like receptors to P. gulae resulted in the ligation of TLR2, TLR4 and NOD2. The effect of this engagement of receptors was investigated by measuring the synthesis of nitric oxide, CD86 expression and inflammatory cytokine production using wild type, TLR2-/- and TLR4-/- macrophages...
June 19, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28629537/triterpenoid-saponins-from-the-roots-of-cyathula-officinalis-and-their-inhibitory-effects-on-nitric-oxide-production
#14
Yun-Tao Jiang, Wen-Jing Yan, Chu-Lu Qi, Ji-Qin Hou, Yan-Ying Zhong, Hui-Jun Li, Hao Wang, Ping Li
The present study was designed to investigate the chemical constituents of the roots of Cyathula officinalis. Compounds were isolated by silica gel, Sephadex LH-20, ODS column chromatography, and preparative HPLC. Their structures were determined on the basis of 1D and 2D NMR techniques, mass spectrometry, and chemical methods. One new oleanane-type triterpenoid saponin, 28-O-[α-L-rhamnopyranosyl-(1→3)-β-D-glucuronopyranosyl-(1→3)-β-D-glucopyranosyl] hederagenin (1), was isolated from the roots of Cyathula officinalis...
June 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28627346/-study-on-rac1-mapk-erk-pathway-mediated-mechanism-and-role-in-rats-with-ventilator-induced-lung-injury
#15
Guanghua Tao, Linghui Pan, Ren Jing, Fei Lin, Huijun Dai, Wanyun Ge
OBJECTIVE: To investigate the role of Ras-related C3 botulinum toxin substrate 1/mitogen-activated protein kinase/extracellular signal-regulated kinase (Rac1/MAPK/ERK) signal pathway in rats with ventilator induced lung injury (VILI) and its mechanism. METHODS: Thirty Sprague-Dawley (SD) rats were randomly divided into spontaneous respiration group, normal tidal volume (VT) group and high VT group with 10 rats in each group. The rats in spontaneous respiration group were kept their spontaneous breathing...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28626209/paeoniflorin-prevents-tlr2-4-mediated-inflammation-in-type-2-diabetic-nephropathy
#16
Tingmin Zhang, Qijin Zhu, Yunxia Shao, Kun Wang, Yonggui Wu
Paeoniflorin is an effective Chinese traditional medicine with anti-inflammatory and immune-regulatory effects. The aim of this study was to investigate the underlying renoprotective mechanism of Paeoniflorin. In vivo, db/db mice were intraperitoneally injected with Paeoniflorin at a dose of 15, 30, or 60 mg/kg respectively. The immunostaining of TLR2, TLR4, CD68, NF-kB p65 and the mRNA level of inflammatory factors, together with the protein expression of TLR2/4 signaling were evaluated. Our data demonstrated that Paeoniflorin could decrease the urinary albumin excretion rate and inhibit macrophage infiltration and activation through blockage of the TLR2/4 signaling pathway compared with the db/db group in vivo...
June 18, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28624443/inhibitory-effect-of-trans-caryophyllene-tc-on-leukocyte-endothelial-attachment
#17
Zhen Zhang, Chunfeng Yang, Xinlun Dai, Yu Ao, Yumei Li
trans-Caryophyllene (TC) is a major component found in the essential oils of many spices and foods/medicinal plants. It is a natural sesquiterpene and has been the subject of numerous studies. However, the effects of TC on vascular inflammation remain unknown. In this study, we reported that TC treatment in human umbilical vein endothelial cells (HUVECs) prevented attachment of monocytic leukemia cell line THP-1 cells to endothelial cells. In addition, in vivo results indicate that TC inhibited macrophage infiltration to the aortic surface and reduced total serum levels of cholesterol and triglycerides...
June 14, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28623940/clonorchis-sinensis-lysophospholipase-a-upregulates-il-25-expression-in-macrophages-as-a-potential-pathway-to-liver-fibrosis
#18
Lina Zhou, Mengchen Shi, Lu Zhao, Zhipeng Lin, Zeli Tang, Hengchang Sun, Tingjin Chen, Zhiyue Lv, Jin Xu, Yan Huang, Xinbing Yu
BACKGROUND: Liver fibrosis is an excessive wound-healing reaction that requires the participation of inflammatory cells and hepatic stellate cells (HSCs). The pathogenesis of liver fibrosis caused by viruses and alcohol has been well characterized, but the molecular mechanisms underlying liver fibrosis induced by the liver fluke Clonorchis sinensis are poorly understood. Lysophospholipase A (LysoPLA), which deacylates lysophospholipids, plays a critical role in mediating the virulence and pathogenesis of parasites and fungi; however, the roles of C...
June 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28623530/participation-of-tumor-associated-myeloid-cells-in-progression-of-amelanotic-melanoma-rmm-tumor-line-in-f344-rats-with-particular-reference-to-mhc-class-ii-and-cd163-expressing-cells
#19
A Bondoc, H M Golbar, M Pervin, C Katou-Ichikawa, M Tanaka, T Izawa, M Kuwamura, J Yamate
Tumor progression is often influenced by infiltration of myeloid cells; depending on the M1- or M2-like activation status, these cells may have either inhibitory or promoting effects on tumor growth. We investigated the properties of tumor-associated myeloid cells in a previously established homotransplantable amelanotic melanoma (RMM tumor line) in F344 rats. RMM tumor nodules were allowed to reach the sizes of 0.5, 1, 2 and 3 cm, respectively. Immunohistochemistry and flow cytometry was performed for macrophage markers CD68 and CD163, and for the antigen-presenting cell marker, MHC class II...
June 16, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28621440/t-lymphocytes-dominate-local-leukocyte-infiltration-in-response-to-intradermal-injection-of-functionalized-graphene-based-nanomaterial
#20
G F Erf, D M Falcon, K S Sullivan, S E Bourdo
Graphene-based nanomaterials (GBN) have many potential biomedical applications. However, information regarding their biological properties and interactions with cells and/or soluble factors within a complex tissue is limited. The objective of this study was to use the growing feather (GF) of chickens as a minimally invasive cutaneous test-site to assess and monitor leukocyte recruitment in response to intradermal GBN injection. Specifically, the dermis of 20 GFs per chicken was injected with 10 μl of phosphate-buffered saline (PBS)-vehicle or 10 μl of 300 μg ml(-1) oxygen-functionalized (f) GBN (6 chickens/treatment)...
June 16, 2017: Journal of Applied Toxicology: JAT
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