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https://www.readbyqxmd.com/read/28346317/the-csf-immune-response-in-hiv-1-associated-cryptococcal-meningitis-macrophage-activation-correlates-of-disease-severity-and-effect-of-antiretroviral-therapy
#1
James E Scriven, Lisa M Graham, Charlotte Schutz, Thomas J Scriba, Katalin A Wilkinson, Robert J Wilkinson, David R Boulware, Britta C Urban, Graeme Meintjes, David G Lalloo
BACKGROUND: Immune modulation may improve outcome in HIV-associated cryptococcal meningitis. Animal studies suggest alternatively activated macrophages are detrimental but human studies are limited. We performed a detailed assessment of the cerebrospinal fluid (CSF) immune response and examined immune correlates of disease severity and poor outcome, and the effects of antiretroviral therapy (ART). METHODOLOGY: We enrolled persons ≥18 years with first episode of HIV-associated cryptococcal meningitis...
March 24, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28320709/plasmin-and-plasminogen-induce-macrophage-reprogramming-and-regulate-key-steps-of-inflammation-resolution-via-annexin-a1
#2
Michelle A Sugimoto, Ana Luíza C Ribeiro, Bruno R C Costa, Juliana P Vago, Kátia M Lima, Fernanda S Carneiro, Mylena Maira O Ortiz, Graziele Letícia N Lima, Aline A F Carmo, Renata M Rocha, Denise A Perez, Alessandra C Reis, Vanessa Pinho, Lindsey A Miles, Cristiana C Garcia, Mauro M Teixeira, Lirlândia P Sousa
Inflammation resolution is an active process that functions to restore tissue homeostasis. Participation of the plasminogen/plasmin (Plg/Pla) system in the productive phase of inflammation is well known, but its involvement in the resolution phase remains unclear. Therefore, we aimed to investigate the potential role of Plg/Pla in key events during the resolution of acute inflammation and its underlying mechanisms. Plg/Pla injection into the pleural cavity of BALB/c mice induced a time-dependent influx of mononuclear cells that were primarily macrophages of anti-inflammatory (M2 - F4/80(high) Gr1(-) CD11b(high)) and proresolving (Mres - F4/80(med) CD11b(low)) phenotypes, without changing the number of macrophages with a pro-inflammatory profile (M1 - F4/80(low) Gr1(+) CD11b(med))...
March 20, 2017: Blood
https://www.readbyqxmd.com/read/28320516/l-f001-a-novel-multifunctional-rock-inhibitor-suppresses-neuroinflammation-in-vitro-and-in-vivo-involvement-of-nf-%C3%AE%C2%BAb-inhibition-and-nrf2-pathway-activation
#3
Jingkao Chen, Wei Yin, Yalin Tu, Shengnan Wang, Xiaohong Yang, Qiuhe Chen, Xiao Zhang, Yifan Han, Rongbiao Pi
Microglia and astrocytes are largely responsible for inflammatory injury in the brain of Alzheimer's disease (AD). Increasing evidence has indicated that Rho kinase (ROCK) plays an important role in the regulation of neuroinflammation. Previously, we synthesized a new chemical entity L-F001 and proved its potential inhibitory effects on ROCK and oxidative stress. Here, we investigated the anti-inflammatory effects and the molecular mechanisms of L-F001 in vitro and in vivo. L-F001 remarkably suppressed lipopolysaccharides (LPS)-elevated expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) as well as LPS-induced production of nitric oxide (NO), reactive oxygen species, interleukin-6 (IL-6) and tumor necreactive oxygen speciesis factor-α (TNF-α) in microglial BV-2 cells and in cultured astrocytes...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28320058/regional-differences-between-perisynovial-and-infrapatellar-adipose-tissue-depots-and-their-response-to-class-ii-and-iii-obesity-in-patients-with-oa
#4
Natalia S Harasymowicz, Nick D Clement, Asim Azfer, Richard Burnett, Donald M Salter, A Hamish W R Simpson
OBJECTIVE: Obesity is associated with an increased risk of developing Osteoarthritis (OA), which is postulated to be secondary to inflammation from adipose tissue (AT). There are peri-articular adipose depots in synovial joints, the association of this tissue with OA has not been extensively explored. The aim of this study was to investigate differences in local AT depots in knees with OA and changes related to class II and III obesity. METHODS: Synovium and the infrapatellar fat pad (IPFP) were collected during total knee replacement from 69 patients with end-stage OA...
March 20, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28303450/dr%C3%AE-1-mog-35-55-treatment-reduces-lesion-volumes-and-improves-neurological-deficits-after-traumatic-brain-injury
#5
Liu Yang, Zhijia Liu, Honglei Ren, Lei Zhang, Siman Gao, Li Ren, Zhi Chai, Roberto Meza-Romero, Gil Benedek, Arthur A Vandenbark, Halina Offner, Minshu Li
Traumatic brain injury (TBI) results in severe neurological impairments without effective treatments. Inflammation appears to be an important contributor to key pathogenic events such as secondary brain injury following TBI and therefore serves as a promising target for novel therapies. We have recently demonstrated the ability of a molecular construct comprised of the human leukocyte antigen (HLA)-DRα1 domain linked covalently to mouse (m)MOG-35-55 peptide (DRα1-MOG-35-55 construct) to reduce CNS inflammation and tissue injury in animal models of multiple sclerosis and ischemic stroke...
March 16, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28303416/microrna-24-modulates-staphylococcus-aureus-induced-macrophage-polarization-by-suppressing-chi3l1
#6
Zhang Jingjing, Zhang Nan, Wu Wei, Guo Qinghe, Wang Weijuan, Wang Peng, Wang Xiangpeng
Macrophages play a crucial role in host innate anti-Staphylococcus aureus defense, which is tightly regulated by multiple factors, including microRNAs. A recent study showed that miR-24 plays an important role in macrophage polarization. Here, we investigated the biological function of miR-24 in S. aureus-stimulated macrophages. The results revealed that miR-24 expression was significantly decreased in both human and mouse macrophage cell lines with S. aureus stimulation in a time-dependent manner. Moreover, miR-24 overexpression significantly decreased the production of M1 phenotype markers, such as IL-6, iNOS, TNF-α, CD86, and CD80, whereas it increased the production of M2 markers, such as Arg1, CCL17, CCL22, CD163, and CD206, in S...
March 16, 2017: Inflammation
https://www.readbyqxmd.com/read/28299384/impairment-of-systemic-dha-synthesis-affects-macrophage-plasticity-and-polarization-implications-for-dha-supplementation-during-inflammation
#7
Emanuela Talamonti, Anna M Pauter, Abolfazl Asadi, Alexander W Fischer, Valerio Chiurchiù, Anders Jacobsson
Docosahexaenoic acid (DHA) is an omega-3 fatty acid obtained from the diet or synthesized from alpha-linolenic acid through the action of fatty acid elongases (ELOVL) and desaturases. DHA plays important roles in the central nervous system as well as in peripheral organs and is the precursor of several molecules that regulate resolution of inflammation. In the present study, we questioned whether impaired synthesis of DHA affected macrophage plasticity and polarization both in vitro and in vivo models. For this we investigated the activation status and inflammatory response of bone marrow-derived M1 and M2 macrophages obtained from mice deficient of Elovl2 (Elovl2(-/-)), a key enzyme for DHA synthesis in mammals...
March 15, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28292218/high-glucose-induces-alternative-activation-of-macrophages-via-pi3k-akt-signaling-pathway
#8
Jie Wang, Jingjing Liu, Yuying Wang, Minghui Lin, Wei Tian, Lingling Zhou, Xiaoyin Ye, Lihang Lin
OBJECTIVE: It has been proved that lactate-4.25% dialysate could result in peritoneal fibrosis by inducing alternative activation of macrophages in our previous study, but the mechanism of high glucose-induced alternative activation has not been elucidated. This study was, therefore, to investigate the mechanism by high glucose stimuli. METHODS: In this study, Raw264.7 (murine macrophage cell line) cells were cultured and stimulated by 4.25% glucose medium, and mannitol medium was used as osmotic pressure control...
March 15, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28286252/pkc-epsilon-and-tlr4-synergistically-regulate-resistin-mediated-inflammation-in-human-macrophages
#9
Mary C Zuniga, Gayatri Raghuraman, Elizabeth Hitchner, Cornelia Weyand, William Robinson, Wei Zhou
BACKGROUND AND AIMS: Resistin has been associated with atherosclerotic inflammation and cardiovascular complications. We and others have previously shown that PKC-epsilon (PKCε) is involved in resistin-induced smooth muscle cell (VSMC) dysfunction at a high pathological concentration. This study aimed to evaluate the role and potential pathways of resistin at a physiological concentration, in atherosclerosis-related inflammation. METHODS: Plasma from patients with atherosclerosis was analyzed for resistin concentration...
February 24, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28284330/inhibition-of-ages-rage-rho-rock-pathway-suppresses-non-specific-neuroinflammation-by-regulating-bv2-microglial-m1-m2-polarization-through-the-nf-%C3%AE%C2%BAb-pathway
#10
Jingkao Chen, Zhaowei Sun, Minghua Jin, Yalin Tu, Shengnan Wang, Xiaohong Yang, Qiuhe Chen, Xiao Zhang, Yifan Han, Rongbiao Pi
The microglia-mediated neuroinflammation plays an important role in the pathogenesis of Alzheimer's disease (AD). Advanced glycation end products (AGEs)/receptor for advanced glycation end products (RAGE) or Rho/Rho kinase (ROCK) are both involved in the development of non-specific inflammation. However, there are few reports about their effects on neuroinflammation. Here, we explored the mechanism of AGEs/RAGE/Rho/ROCK pathway underlying the non-specific inflammation and microglial polarization in BV2 cells...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28273403/pten-pi3k-akt-regulates-macrophage-polarization-in-emphysematous-mice
#11
JunJuan Lu, LiHua Xie, Chun Liu, Qiang Zhang, ShengHua Sun
Macrophages play an important role in the pathogenesis of COPD. Macrophage polarization toward the M2 phenotype has been observed in the lung tissues of COPD patients and cigarette smokers. The molecular basis of this process remains unclear, and it has not been completely illuminated in animal models of emphysema. In our study we combined cigarette smoke(CS) exposure with intraperitoneal injection of cigarette smoke extract (CSE) to build an emphysema model. We found by immunohistochemical staining and flow cytometry that the expression level of CD206 and the ratio of M2 to M1 macrophages was increased in emphysematous mice...
March 8, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28257800/human-mesenchymal-stem-cell-educated-macrophages-are-a-distinct-high-il-6-producing-subset-that-confer-protection-in-graft-versus-host-disease-and-radiation-injury-models
#12
Myriam N Bouchlaka, Andrea B Moffitt, Jaehyup Kim, John A Kink, Debra D Bloom, Cassandra Love, Sandeep Dave, Peiman Hematti, Christian M Capitini
Mesenchymal stem cells (MSCs) have immunosuppressive and tissue repair properties, but clinical trials using MSCs to prevent or treat GVHD have shown mixed results. Macrophages (MØs) are important regulators of immunity and can promote tissue regeneration and remodeling. We have previously shown that MSCs can educate MØs toward a unique anti-inflammatory immunophenotype (MSC-educated macrophages or MEMs), however their implications for in vivo models of inflammation have not been studied yet. We now show that in comparison to MØs, MEMs have increased expression of the inhibitory molecules PD-L1, PD-L2, in addition to markers of alternatively activated macrophages: CD206 and CD163...
February 28, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28257233/three-unique-interstitial-macrophages-in-the-murine-lung-at-steady-state
#13
Sophie L Gibbings, Stacey M Thomas, Shaikh M Atif, Alexandra L McCubbrey, A Nicole Desch, Thomas Danhorn, Sonia M Leach, Donna L Bratton, Peter M Henson, William J Janssen, Claudia V Jakubzick
RATIONALE: The current paradigm in macrophage biology is that some tissues mainly contain macrophages from embryonic origin such as microglia in the brain, while other tissues contain postnatal-derived macrophages, such as the gut. However, in the lung and in other organs such as the skin, there are both embryonic and postnatal-derived macrophages. OBJECTIVES: In this study, we demonstrate in the steady-state lung that the mononuclear phagocyte system is comprised of three newly identified interstitial macrophages (IMs), alveolar macrophages (AMs), dendritic cells (DCs) and few extravascular monocytes...
March 3, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28255366/liposomal-nanoparticles-carrying-anti-il6r-antibody-to-the-tumour-microenvironment-inhibit-metastasis-in-two-molecular-subtypes-of-breast-cancer-mouse-models
#14
Chunlei Guo, Yanan Chen, Wenjuan Gao, Antao Chang, Yujie Ye, Wenzhi Shen, Yunping Luo, Shengyong Yang, Peiqing Sun, Rong Xiang, Na Li
Tumour microenvironment (TME) contributes significantly towards potentiating the stemness and metastasis properties of cancer cells. IL6-Stat3 is one of the important cell signaling pathways in mediating the communication between tumour and immune cells. Here, we have systematically developed a novel anti-CD44 antibody-mediated liposomal nanoparticle delivery system loaded with anti-IL6R antibody, which could specifically target the TME of CD44(+) breast cancer cells in different mouse models for triple negative and luminal breast cancer...
2017: Theranostics
https://www.readbyqxmd.com/read/28238274/primary-human-monocytes-differentiate-into-m2-macrophages-and-involve-notch-1-pathway
#15
Dinender K Singla, Jing Wang, Reetu Singla
The current study investigates whether inhibiting the Notch-1 signaling pathway in primary human monocytes enhances M2 macrophage differentiation. We generated a primary human monocyte cell culture model to understand the effect of the Notch-1 signaling pathway. Monocytes were treated with Notch-1 inhibitors DAPT or siRNA. Our data show that there was a significant increase in the M1 macrophage population demonstrated by iNOS marker in the primary human monocytes treated with apoptotic-conditioned medium (ACM)...
March 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28219886/dependence-of-glomerulonephritis-induction-on-novel-intraglomerular-alternatively-activated-bone-marrow-derived-macrophages-and-mac-1-and-pd-l1-in-lupus-prone-nzm2328-mice
#16
Sun-Sang J Sung, Yan Ge, Chao Dai, Hongyang Wang, Shu Man Fu, Rahul Sharma, Young S Hahn, Jing Yu, Thu H Le, Mark D Okusa, Warren K Bolton, Jessica R Lawler
Glomerular damage mediated by glomerulus-infiltrating myeloid-derived cells is a key pathogenic event in lupus nephritis (LN), but the process is poorly understood. Confocal microscopy of kidney sections and flow cytometry analysis of glomerular cells from magnetic bead-purified glomeruli have identified glomerulus-infiltrating leukocyte populations in NZM2328 (NZM) lupus-prone mice with spontaneous chronic glomerulonephritis (GN) and anti-glomerular basement membrane-induced nephritis. The occurrence of a major glomerulus-infiltrating CD11b(+)F4/80(-)I-A(-) macrophage population exhibiting the markers programmed death ligand-1 (PD-L1), Mac-2, and macrophage mannose receptor (CD206) and producing Klf4, Il10, Retnla, Tnf, and Il6 mRNA, which are known to be expressed by alternatively activated (M2b) macrophages, correlated with proteinuria status...
April 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28212670/characterization-of-schistosoma-japonicum-cp1412-protein-as-a-novel-member-of-the-ribonuclease-t2-molecule-family-with-immune-regulatory-function
#17
Xue-Dan Ke, Shuang Shen, Li-Jun Song, Chuan-Xin Yu, Mihoko Kikuchi, Kenji Hirayama, Hong Gao, Jie Wang, Xuren Yin, Yuan Yao, Qian Liu, Wei Zhou
BACKGROUND: Schistosome infection typically induces a polarized Th2 type host immune response. As egg antigen molecules play key roles in this immunoregulatory process, clarifying their functions in schistosomiasis would facilitate the development of vaccine and immunotherapeutic methods. Schistosoma japonicum (Sj) CP1412 (GenBank: AY57074.1) has been identified as a new member of the RNase T2 family with immune regulatory functions. METHODS: The expression plasmid Sj CP1412-pET28a was constructed and transformed into bacteria for production of recombinant Sj CP1412 protein (rSj CP1412) via IPTG induction...
February 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28209809/macrophage-to-myofibroblast-transition-contributes-to-interstitial-fibrosis-in-chronic-renal-allograft-injury
#18
Ying-Ying Wang, Hong Jiang, Jun Pan, Xiao-Ru Huang, Yu-Cheng Wang, Hong-Feng Huang, Ka-Fai To, David J Nikolic-Paterson, Hui-Yao Lan, Jiang-Hua Chen
Interstitial fibrosis is an important contributor to graft loss in chronic renal allograft injury. Inflammatory macrophages are associated with fibrosis in renal allografts, but how these cells contribute to this damaging response is not clearly understood. Here, we investigated the role of macrophage-to-myofibroblast transition in interstitial fibrosis in human and experimental chronic renal allograft injury. In biopsy specimens from patients with active chronic allograft rejection, we identified cells undergoing macrophage-to-myofibroblast transition by the coexpression of macrophage (CD68) and myofibroblast (α-smooth muscle actin [α-SMA]) markers...
February 16, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28204544/application-of-a-novel-cd206-macrophage-specific-arterial-imaging-strategy-in-hiv
#19
Markella V Zanni, Mabel Toribio, Moses Q Wilks, Michael T Lu, Tricia H Burdo, Joshua Walker, Patrick Autissier, Borek Foldyna, Lauren Stone, Amanda Martin, Fred Cope, Bonnie Abbruzzese, Thomas Brady, Udo Hoffmann, Kenneth C Williams, Georges El-Fakhri, Steven K Grinspoon
No abstract text is available yet for this article.
January 16, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28197150/curcumin-attenuates-titanium-particle-induced-inflammation-by-regulating-macrophage-polarization-in-vitro-and-in-vivo
#20
Bin Li, Yan Hu, Yaochao Zhao, Mengqi Cheng, Hui Qin, Tao Cheng, Qiaojie Wang, Xiaochun Peng, Xianlong Zhang
Periprosthetic inflammatory osteolysis and subsequent aseptic loosening are commonly observed in total joint arthroplasty. Other than revision surgery, few approved treatments are available for this complication. Wear particle-induced inflammation and macrophage polarization state play critical roles in periprosthetic osteolysis. We investigated the effects of curcumin, a polyphenol extracted from Curcuma longa, on titanium (Ti) particle-induced inflammation and macrophage polarization in vitro using the murine cell line RAW 264...
2017: Frontiers in Immunology
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