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macrophage in immune response

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https://www.readbyqxmd.com/read/28643827/anti-oxidant-and-immune-modulatory-properties-of-sulfated-alginate-derivatives-on-human-chondrocytes-and-macrophages
#1
Anne Kerschenmeyer, Øystein Arlov, Vera Malheiro, Matthias Steinwachs, Markus Rottmar, Katharina Maniura-Weber, Gemma Palazzolo, Marcy Zenobi-Wong
Degeneration of articular cartilage represents one of the most common causes of pain and disability in our aging society. Current treatments only address the symptoms of joint disease, but not their underlying causes which include oxidative stress and inflammation in cartilage and surrounding tissues. Sulfated biopolymers that mimic aspects of the native extracellular environment of cartilage are recently gaining interest as a means to slow the inflammatory events responsible for tissue degeneration. Here we show that the natural polysaccharide alginate and particularly its sulfated derivatives have potent anti-oxidant, anti-inflammatory and anti-immunogenic properties in vitro...
June 23, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28643761/the-effects-of-gene-therapy-with-granulocyte-macrophage-colony-stimulating-factor-in-the-regression-of-tumor-masses-in-fibrosarcoma-mouse-model
#2
Saiedeh RaziSoofiyani, Tohid Kazemi, Farzaneh Lotfipour, Leila Mohammadnejad, Somayeh Hallaj-Nezhadi, Siamak Sandoghchian Shotorbani, Akbar Mohammad Hosseini, Behzad Baradaran
INTRODUCTION: Cytokine gene therapy is one of the cancer treatment strategies. Recently, granulocyte-monocyte colony-stimulating factor (GM-CSF), as an important cytokine in activating dendritic cells and boosting the anti-tumor immune responses, has been utilized as an immunotherapeutic agent in cancer gene therapy. The purpose of the present investigation was to study the GM-CSF gene therapy effects in regression of tumor masses in fibrosarcoma mouse model. MATERIALS AND METHODS: To investigate the therapeutic efficacy of GM-CSF, WEHI-164 tumor cells were transfected with murine GM-CSF plasmid...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28642826/elucidation-of-the-role-of-lectin-like-oxldl-receptor-1-in-the-metabolic-responses-of-macrophages-to-human-oxldl
#3
Danielle W Kimmel, William P Dole, David E Cliffel
Atherogenesis is the narrowing of arteries due to plaque build-up that results in cardiovascular disease that can lead to death. The macrophage lectin-like oxidized LDL receptor-1 (LOX-1), also called the oxidized low-density lipoprotein receptor 1 (OLR1), is currently thought to aid in atherosclerotic disease progression; therefore metabolic studies have potential to both provide mechanistic validation for the role of LOX-1 in disease progression and provide valuable information regarding biomarker strategies and clinical imaging...
2017: Journal of Lipids
https://www.readbyqxmd.com/read/28642703/different-regulation-of-interleukin-1-production-and-activity-in-monocytes-and-macrophages-innate-memory-as-an-endogenous-mechanism-of-il-1-inhibition
#4
Mariusz P Madej, Elfi Töpfer, Diana Boraschi, Paola Italiani
Production and activity of interleukin (IL)-1β are kept under strict control in our body, because of its powerful inflammation-promoting capacity. Control of IL-1β production and activity allows IL-1 to exert its defensive activities without causing extensive tissue damage. Monocytes are the major producers of IL-1β during inflammation, but they are also able to produce significant amounts of IL-1 inhibitors such as IL-1Ra and the soluble form of the decoy receptor IL-1R2, in an auto-regulatory feedback loop...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28642697/targeting-microglial-activation-states-as-a-therapeutic-avenue-in-parkinson-s-disease
#5
REVIEW
Sudhakar R Subramaniam, Howard J Federoff
Parkinson's disease (PD) is a chronic and progressive disorder characterized neuropathologically by loss of dopamine neurons in the substantia nigra, intracellular proteinaceous inclusions, reduction of dopaminergic terminals in the striatum, and increased neuroinflammatory cells. The consequent reduction of dopamine in the basal ganglia results in the classical parkinsonian motor phenotype. A growing body of evidence suggest that neuroinflammation mediated by microglia, the resident macrophage-like immune cells in the brain, play a contributory role in PD pathogenesis...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28642632/mcl-plays-an-anti-inflammatory-role-in-mycobacterium-tuberculosis-induced-immune-response-by-inhibiting-nf-%C3%AE%C2%BAb-and-nlrp3-inflammasome-activation
#6
Qingwen Zhang, Xinru Jiang, Weigang He, Kailin Wei, Jinxia Sun, Xiangyang Qin, Yuejuan Zheng, Xin Jiang
Mycobacterium tuberculosis (Mtb) remains a significant menace to global health as it induces granulomatous lung lesions and systemic inflammatory responses during active tuberculosis (TB). Micheliolide (MCL), a sesquiterpene lactone, was recently reported to have a function of relieving LPS-induced inflammatory response, but the regulative role of MCL on the immunopathology of TB still remains unknown. In this experiment, we examined the inhibitory effect of MCL on Mtb-induced inflammatory response in mouse macrophage-like cell line Raw264...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28642332/morphine-worsens-the-severity-and-prevents-pancreatic-regeneration-in-mouse-models-of-acute-pancreatitis
#7
Usman Barlass, Raini Dutta, Hassam Cheema, John George, Archana Sareen, Ajay Dixit, Zuobiao Yuan, Bhuwan Giri, Jingjing Meng, Santanu Banerjee, Sulagna Banerjee, Vikas Dudeja, Rajinder K Dawra, Sabita Roy, Ashok K Saluja
BACKGROUND: Opioids such as morphine are widely used for the management of pain associated with acute pancreatitis. Interestingly, opioids are also known to affect the immune system and modulate inflammatory pathways in non-pancreatic diseases. However, the impact of morphine on the progression of acute pancreatitis has never been evaluated. In the current study, we evaluated the impact of morphine on the progression and severity of acute pancreatitis. METHODS: Effect of morphine treatment on acute pancreatitis in caerulein, L-arginine and ethanol-palmitoleic acid models was evaluated after induction of the disease...
June 22, 2017: Gut
https://www.readbyqxmd.com/read/28642238/ager-deletion-enhances-ischemic-muscle-inflammation-neoangiogenesis-and-blood-flow-recovery-in-diabetic-mice
#8
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/28642110/pedf-plus-dha-modulate-inflammation-and-stimulate-nerve-regeneration-after-hsv-1-infection
#9
Jiucheng He, Donna Neumann, Azucena Kakazu, Thang Luong Pham, Farhana Musarrat, M Soledad Cortina, Haydee E P Bazan
Herpes simplex virus type-1 (HSV-1) infection leads to impaired corneal sensation and, in severe cases, to corneal ulceration, melting and perforation. Here, we explore the potential therapeutic action of pigment epithelial-derived factor (PEDF) plus docosahexaenoic acid (DHA) on corneal inflammation and nerve regeneration following HSV-1 infection. Rabbits inoculated with 100,000 PFU/eye of HSV-1 strain 17Syn+ were treated with PEDF + DHA or vehicle. PEDF + DHA treatment resulted in a biphasic immune response with stronger infiltration of CD4+T cells, neutrophils and macrophages at 7-days post-treatment (p...
June 19, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28641584/crotoxin-stimulates-an-m1-activation-profile-in-murine-macrophages-during-leishmania-amazonensis-infection
#10
L H S Farias, A P D Rodrigues, E C Coêlho, M F Santos, S C Sampaio, E O Silva
American tegumentary leishmaniasis is caused by different species of Leishmania. This protozoan employs several mechanisms to subvert the microbicidal activity of macrophages and, given the limited efficacy of current therapies, the development of alternative treatments is essential. Animal venoms are known to exhibit a variety of pharmacological activities, including antiparasitic effects. Crotoxin (CTX) is the main component of Crotalus durissus terrificus venom, and it has several biological effects. Nevertheless, there is no report of CTX activity during macrophage - Leishmania interactions...
June 23, 2017: Parasitology
https://www.readbyqxmd.com/read/28639600/effects-of-polysaccharide-fractions-isolated-from-caltha-palustris-l-on-the-activity-of-phagocytic-cells-humoral-immune-response-in-mice-with-collagen-induced-arthritis-a-comparison-with-methotrexate
#11
Agnieszka Suszko, Bożena Obmińska-Mrukowicz
BACKGROUND & OBJECTIVES: The extracts from Caltha palustris L. have been shown to be beneficial for treating arthritis and rheumatism. In this study, the immunomodulatory effects of polysaccharide fractions B and C of C. palustris extracts were studied, using the collagen-induced arthritis (CIA) mouse arthritis experimental model. The aim was to determine the activity of blood phagocytic cells and humoral immune response in CIA mice treated with polysaccharide fractions from C. palustris...
February 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28637471/enhanced-humoural-and-cellular-immune-responses-to-influenza-h7n9-antigen-ha1-2-fused-with-flagellin-in-chickens
#12
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/28637178/the-at04a-vaccine-against-proprotein-convertase-subtilisin-kexin-type-9-reduces-total-cholesterol-vascular-inflammation-and-atherosclerosis-in-apoe-3leiden-cetp-mice
#13
Christine Landlinger, Marianne G Pouwer, Claudia Juno, José W A van der Hoorn, Elsbet J Pieterman, J Wouter Jukema, Guenther Staffler, Hans M G Princen, Gergana Galabova
Aims: Proprotein convertase subtilisin/kexin type 9 (PCSK9) has emerged as a promising therapeutic target for the treatment of hypercholesterolaemia and atherosclerosis. PCSK9 binds to the low density lipoprotein receptor and enhances its degradation, which leads to the reduced clearance of low density lipoprotein cholesterol (LDLc) and a higher risk of atherosclerosis. In this study, the AT04A anti-PCSK9 vaccine was evaluated for its therapeutic potential in ameliorating or even preventing coronary heart disease in the atherogenic APOE*3Leiden...
June 19, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28636635/microrna-144-3p-inhibits-autophagy-activation-and-enhances-bacillus-calmette-gu%C3%A3-rin-infection-by-targeting-atg4a-in-raw264-7-macrophage-cells
#14
Le Guo, Linlin Zhou, Qian Gao, Aijun Zhang, Jun Wei, Dantong Hong, Yuankui Chu, Xiangguo Duan, Ying Zhang, Guangxian Xu
MicroRNAs (miRNAs) are small noncoding nucleotides that play major roles in the response of host immune cells. Autophagy plays a key role in activating the antimicrobial host defense against Mycobacterium tuberculosis (M. tuberculosis). Whether miRNAs specifically influence the activation of macrophage autophagy during M. tuberculosis infection is largely unknown. In the present study, we demonstrate that Mycobacterium bovis Bacillus Calmette-Guérin (BCG) infection of macrophages leads to increased expression of miR-144-3p, which targets autophagy-related gene 4a (ATG4a), to inhibit autophagy activation and antimicrobial responses to BCG...
2017: PloS One
https://www.readbyqxmd.com/read/28634479/whole-blood-profiling-of-bacillus-calmette-gu%C3%A3-rin-induced-trained-innate-immunity-in-infants-identifies-epidermal-growth-factor-il-6-platelet-derived-growth-factor-ab-bb-and-natural-killer-cell-activation
#15
Steven G Smith, Johanneke Kleinnijenhuis, Mihai G Netea, Hazel M Dockrell
Vaccination of infants with bacillus Calmette-Guérin (BCG) activates both the innate and adaptive arms of the immune response. The antimycobacterial effects of these responses most likely account for the ability of BCG to protect against childhood forms of tuberculosis (TB). There is also evidence for a heterologous protective effect of BCG vaccination against TB-unrelated mortality in low birth weight infants. A possible mechanism of action of this effect, the induction of trained innate immunity, has been demonstrated when cells from BCG-vaccinated adults are restimulated in vitro with non-related microbial stimuli...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28634345/sirtuin-3-deficiency-does-not-alter-host-defenses-against-bacterial-and-fungal-infections
#16
Eleonora Ciarlo, Tytti Heinonen, Jérôme Lugrin, Hans Acha-Orbea, Didier Le Roy, Johan Auwerx, Thierry Roger
Sirtuin 3 (SIRT3) is the main mitochondrial deacetylase. SIRT3 regulates cell metabolism and redox homeostasis, and protects from aging and age-associated pathologies. SIRT3 may drive both oncogenic and tumor-suppressive effects. SIRT3 deficiency has been reported to promote chronic inflammation-related disorders, but whether SIRT3 impacts on innate immune responses and host defenses against infections remains essentially unknown. This aspect is of primary importance considering the great interest in developing SIRT3-targeted therapies...
June 20, 2017: Scientific Reports
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
#17
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/28633555/glutamine-administration-in-early-or-late-septic-phase-downregulates-lymphocyte-pd-1-pd-l1-expression-and-the-inflammatory-response-in-mice-with-polymicrobial-sepsis
#18
Ya-Mei Hu, Yuan-Chin Hsiung, Man-Hui Pai, Sung-Ling Yeh
BACKGROUND: Sepsis is a severe inflammatory response to infection. Excessive compensation to inflammation leads to dysregulated immune response that ultimately results in organ damage and lethality of sepsis. This study administered glutamine (GLN) in the early or late phase of sepsis to investigate its effects on regulating leukocyte programmed cell death 1 (PD-1) and its ligand (programmed cell death ligand 1 [PD-L1]) expression, macrophage function, inflammation, and acute kidney injury in sepsis...
March 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28632131/reciprocal-analyses-in-zebrafish-and-medaka-reveal-that-harnessing-the-immune-response-promotes-cardiac-regeneration
#19
Didier Yr Stainier, Shih-Lei Ben Lai, Rubén Marín-Juez, Pedro Luís Moura, Carsten Kuenne, Jason Kuan Han Lai, Ayele Taddese Tsedeke, Stefan Guenther, Mario Looso
Zebrafish display a distinct ability to regenerate their heart following injury. However, this ability is not shared by another teleost, the medaka. In order to identify cellular and molecular bases for this difference, we performed comparative transcriptomic analyses following cardiac cryoinjury. This comparison points to major differences in immune cell dynamics between these models. Upon closer examination, we observed delayed and reduced macrophage recruitment in medaka, along with delayed neutrophil clearance...
June 20, 2017: ELife
https://www.readbyqxmd.com/read/28631608/one-year-in-review-2017-pathogenesis-of-rheumatoid-arthritis
#20
REVIEW
Francesca Angelotti, Alice Parma, Giacomo Cafaro, Riccardo Capecchi, Alessia Alunno, Ilaria Puxeddu
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease influenced by both genetic and environmental factors. It has been postulated that a high-risk genetic background, in combination with epigenetic marks and environmental exposures, leads to a cascade of events inducing synovitis and consequent destructive arthritis. The clinical picture of joint involvement in RA is the result of chronic inflammation of the synovium, characterised by interactions of resident cells such as fibroblast-like synoviocytes (FLS) with cells of the innate (e...
May 2017: Clinical and Experimental Rheumatology
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