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https://www.readbyqxmd.com/read/29770863/siv-latency-in-macrophages-in-the-cns
#1
Lucio Gama, Celina Abreu, Erin N Shirk, Suzanne E Queen, Sarah E Beck, Kelly A Metcalf Pate, Brandon T Bullock, M Christine Zink, Joseph L Mankowski, Janice E Clements
Lentiviruses infect myeloid cells, leading to acute infection followed by persistent/latent infections not cleared by the host immune system. HIV and SIV are lentiviruses that infect CD4+ lymphocytes in addition to myeloid cells in blood and tissues. HIV infection of myeloid cells in brain, lung, and heart causes tissue-specific diseases that are mostly observed during severe immunosuppression, when the number of circulating CD4+ T cells declines to exceeding low levels. Antiretroviral therapy (ART) controls viral replication but does not successfully eliminate latent virus, which leads to viral rebound once ART is interrupted...
May 17, 2018: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/29769800/the-therapeutic-potential-of-blocking-galectin-3-expression-in-acute-myocardial-infarction-and-mitigating-inflammation-of-infarct-region-a-clinical-outcome-based-translational-study
#2
Wassim Mosleh, Milind R Chaudhari, Swati Sonkawade, Supriya Mahajan, Charl Khalil, Kevin Frodey, Tanvi Shah, Suraj Dahal, Roshan Karki, Rujuta Katkar, W Matthijs Blankesteijn, Brian Page, Saraswati Pokharel, Minhyung Kim, Umesh C Sharma
Introduction: Increased galectin-3 is associated with ischemic cardiomyopathy, although its role in early remodeling post-myocardial infarction (MI) has not been fully elucidated. There are no data demonstrating that blocking galectin-3 expression would have an impact on the heart and that its relationship to remodeling is not simply an epiphenomenon. The direct association between galectin-3 and myocardial inflammation, dysfunction, and adverse cardiovascular outcomes post-MI was examined using clinical and translational studies...
2018: Biomarker Insights
https://www.readbyqxmd.com/read/29769287/the-protective-role-of-macrophage-migration-inhibitory-factor-in-acute-kidney-injury-after-cardiac-surgery
#3
Christian Stoppe, Luisa Averdunk, Andreas Goetzenich, Josefin Soppert, Arnaud Marlier, Sandra Kraemer, Jil Vieten, Mark Coburn, Ana Kowark, Bong-Song Kim, Gernot Marx, Steffen Rex, Akinobu Ochi, Lin Leng, Gilbert Moeckel, Andreas Linkermann, Omar El Bounkari, Alexander Zarbock, Jürgen Bernhagen, Sonja Djudjaj, Richard Bucala, Peter Boor
Acute kidney injury (AKI) represents the most frequent complication after cardiac surgery. Macrophage migration inhibitory factor (MIF) is a stress-regulating cytokine that was shown to protect the heart from myocardial ischemia-reperfusion injury, but its role in the pathogenesis of AKI remains unknown. In an observational study, serum and urinary MIF was quantified in 60 patients scheduled for elective conventional cardiac surgery with the use of cardiopulmonary bypass. Cardiac surgery triggered an increase in MIF serum concentrations, and patients with high circulating MIF (>median) 12 hours after surgery had a significantly reduced risk of developing AKI (relative risk reduction, 72...
May 16, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29767342/characterization-of-xanthine-dehydrogenase-and-aldehyde-oxidase-of-marsupenaeus-japonicus-and-their-response-to-microbial-pathogen
#4
Yo Okamura, Mari Inada, Gehad Elsaid Elshopakey, Toshiaki Itami
Reactive oxygen species (ROS) play key roles in many physiological processes. In particular, the sterilization mechanism of bacteria using ROS in macrophages is a very important function for biological defense. Xanthine dehydrogenase (XDH) and aldehyde oxidase (AOX), members of the molybdo-flavoenzyme subfamily, are known to generate ROS. Although these enzymes occur in many vertebrates, some insects, and plants, little research has been conducted on XDHs and AOXs in crustaceans. Here, we cloned the entire cDNA sequences of XDH (MjXDH: 4328 bp) and AOX (MjAOX: 4425 bp) from Marsupenaeus japonicus (kuruma shrimp) using reverse transcriptase-polymerase chain reaction (RT-PCR) and random amplification of cDNA ends (RACE)...
May 16, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29765083/adeno-associated-virus-vector-mediated-interleukin-10-induction-prevents-vascular-inflammation-in-a-murine-model-of-kawasaki-disease
#5
Jun Nakamura, Sachiko Watanabe, Hiroaki Kimura, Motoi Kobayashi, Tadayoshi Karasawa, Ryo Kamata, Fumitake Usui-Kawanishi, Ai Sadatomo, Hiroaki Mizukami, Noriko Nagi-Miura, Naohito Ohno, Tadashi Kasahara, Seiji Minota, Masafumi Takahashi
Kawasaki disease (KD), which is the leading cause of pediatric heart disease, is characterized by coronary vasculitis and subsequent aneurysm formation. Although intravenous immunoglobulin therapy is effective for reducing aneurysm formation, a certain number of patients are resistant to this therapy. Because interleukin-10 (IL-10) was identified as a negative regulator of cardiac inflammation in a murine model of KD induced by Candida albicans water-soluble fraction (CAWS), we investigated the effect of IL-10 supplementation in CAWS-induced vasculitis...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29761388/isolation-and-identification-of-interstitial-macrophages-from-the-lungs-using-different-digestion-enzymes-and-staining-strategies
#6
Shaikh M Atif, Sophie L Gibbings, Claudia V Jakubzick
Interstitial macrophages (IMs) are present in multiple organs. Although there is limited knowledge of the unique functional role IM subtypes play, macrophages, in general, are known for their contribution in homeostatic tissue maintenance and inflammation such as clearing pathogens and debris and secreting inflammatory mediators and growth factors. IM subtypes have been identified in the heart, skin, and gut, and more recently we identified three distinct IMs in the lung. IMs express on their surface high levels of MerTK, CD64, and CD11b, with differences in CD11c, CD206, and MHC II expression, and referred to the three pulmonary IM subtypes as IM1 (CD11clo CD206+ MHCIIlo ), IM2 (CD11clo CD206+ MHCIIhi ), and IM3 (CD11chi CD206lo MHCIIhi )...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29753320/adverse-effects-of-hif1a-mutation-and-maternal-diabetes-on-the-offspring-heart
#7
Radka Cerychova, Romana Bohuslavova, Frantisek Papousek, David Sedmera, Pavel Abaffy, Vladimir Benes, Frantisek Kolar, Gabriela Pavlinkova
BACKGROUND: Epidemiological studies show that maternal diabetes predisposes offspring to cardiovascular and metabolic disorders. However, the precise mechanisms for the underlying penetrance and disease predisposition remain poorly understood. We examined whether hypoxia-inducible factor 1 alpha, in combination with exposure to a diabetic intrauterine environment, influences the function and molecular structure of the adult offspring heart. METHODS AND RESULTS: In a mouse model, we demonstrated that haploinsufficient (Hif1a+/- ) offspring from a diabetic pregnancy developed left ventricle dysfunction at 12 weeks of age, as manifested by decreased fractional shortening and structural remodeling of the myocardium...
May 12, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29748743/erythropoietin-and-nrf2-key-factors-in-the-neuroprotection-provided-by-apo-lactoferrin
#8
E T Zakharova, A V Sokolov, N N Pavlichenko, V A Kostevich, I N Abdurasulova, A V Chechushkov, I V Voynova, A Yu Elizarova, N N Kolmakov, M G Bass, I V Semak, A I Budevich, P M Kozhin, N K Zenkov, V M Klimenko, O V Kirik, D E Korzhevskii, E B Menshchikova, V B Vasilyev
Among the properties of lactoferrin (LF) are bactericidal, antianemic, immunomodulatory, antitumour, antiphlogistic effects. Previously we demonstrated its capacity to stabilize in vivo HIF-1-alpha and HIF-2-alpha, which are redox-sensitive multiaimed transcription factors. Various tissues of animals receiving recombinant human LF (rhLF) responded by expressing the HIF-1-alpha target genes, hence such proteins as erythropoietin (EPO), ceruloplasmin, etc. were synthesized in noticeable amounts. Among organs in which EPO synthesis occurred were brain, heart, spleen, liver, kidneys and lungs...
May 10, 2018: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/29745908/local-use-of-granulocyte-macrophages-colony-stimulating-factor-in-treatment-of-chronic-diabetic-neuropathic-ulcer-case-review
#9
E Karlafti, Ch Savopoulos, A Hatzitolios, T Didangelos
One of the main causes of amputations in patients with Diabetes Mellitus patients is a chronic diabetic foot ulcer. The authors present a clinical case and discussion of a successful use of Granulocyte-Macrophages Colony Stimulating Factor (GM-CSF) treatment for the promotion of healing of a chronic diabetic foot ulcer. A 65 year-old woman was admitted to the Diabetes Center with complaints of a deep non-healing chronic foot ulcer for the last 18 months. At the examination a 5 cm ulcer on the plantar surface of the right foot was revealed...
April 2018: Georgian Medical News
https://www.readbyqxmd.com/read/29740050/matrix-metalloproteinases-mmps-mediate-leukocyte-recruitment-during-the-inflammatory-phase-of-zebrafish-heart-regeneration
#10
Shisan Xu, Sarah E Webb, Terrence Chi Kong Lau, Shuk Han Cheng
In zebrafish, the role of matrix metalloproteinases (MMPs) in the inflammatory phase of heart regeneration following cryoinjury remains poorly understood. Here, we demonstrated an increase in MMP enzymatic activity and elevated expression of mmp9 and mmp13 in the injured area (IA) of hearts from as early as 1 day post-cryoinjury (dpc). Treatment with the broad-spectrum MMP inhibitor, GM6001, during the first week after cryoinjury resulted in impaired heart regeneration, as indicated by the larger scar and reduced numbers of proliferating cardiomyocytes...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29728137/predictive-potential-of-macrophage-migration-inhibitory-factor-mif-in-patients-with-heart-failure-with-preserved-ejection-fraction-hfpef
#11
Peter Luedike, Georgios Alatzides, Maria Papathanasiou, Martin Heisler, Julia Pohl, Nils Lehmann, Tienush Rassaf
BACKGROUND: Prognostication in heart failure with preserved ejection fraction (HFpEF) is challenging and novel biomarkers are urgently needed. Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine that plays a crucial role in cardiovascular and various inflammatory diseases. Whether MIF is involved in HFpEF is unknown. METHODS AND RESULTS: Sixty-two patients with HFpEF were enrolled and followed up for 180 days. MIF plasma levels as well as natriuretic peptide (NP) levels were assessed...
May 4, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29725632/urinary-biomarkers-to-identify-autosomal-dominant-polycystic-kidney-disease-patients-with-a-high-likelihood-of-disease-progression
#12
A Lianne Messchendorp, Esther Meijer, Wendy E Boertien, Gerwin E Engels, Niek F Casteleijn, Edwin M Spithoven, Monique Losekoot, Johannes G M Burgerhof, Dorien J M Peters, Ron T Gansevoort
Introduction: The variable disease course of autosomal dominant polycystic kidney disease (ADPKD) makes it important to develop biomarkers that can predict disease progression, from a patient perspective and to select patients for renoprotective treatment. We therefore investigated whether easy-to-measure urinary biomarkers are associated with disease progression and have additional value over that of conventional risk markers. Methods: At baseline, inflammatory, glomerular, and tubular damage markers were measured in 24-hour urine collections (albumin, IgG, kidney injury molecule-1 (KIM-1), N -acetyl-β-d-glucosaminidase (NAG), β2 microglobulin (β2MG), heart-type fatty acid binding protein (HFABP), macrophage migration inhibitory factor (MIF), neutrophil gelatinase-associated lipocalin (NGAL), and monocyte chemotactic protein-1 (MCP-1)...
March 2018: KI Reports
https://www.readbyqxmd.com/read/29723777/circulating-macrophage-migration-inhibitory-factor-mif-in-patients-with-heart-failure
#13
Peter Luedike, Georgios Alatzides, Maria Papathanasiou, Martin Heisler, Julia Pohl, Nils Lehmann, Tienush Rassaf
BACKGROUND: Heart failure (HF) is characterized by impaired systolic ejection capacity and/or diastolic filling of the heart, leading to a multisystem disorder. Remote organ failure, systemic inflammation or pulmonary hypertension (PH) are hallmarks of the pathophysiological changes in HF. The Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine that is involved in a variety of cardiovascular and inflammatory diseases. Circulating MIF levels and their potential role as a disease marker in the different subgroups of HF have not been investigated yet...
April 30, 2018: Cytokine
https://www.readbyqxmd.com/read/29712858/distinct-roles-of-resident-and-nonresident-macrophages-in-nonischemic-cardiomyopathy
#14
Xudong Liao, Yuyan Shen, Rongli Zhang, Keiki Sugi, Neelakantan T Vasudevan, M Amer Alaiti, David R Sweet, Lin Zhou, Yulan Qing, Stanton L Gerson, Chen Fu, Anthony Wynshaw-Boris, Rui Hu, Martin A Schwartz, Hisashi Fujioka, Brian Richardson, Mark J Cameron, Hiroki Hayashi, Jonathan S Stamler, Mukesh K Jain
Nonischemic cardiomyopathy (NICM) resulting from long-standing hypertension, valvular disease, and genetic mutations is a major cause of heart failure worldwide. Recent observations suggest that myeloid cells can impact cardiac function, but the role of tissue-intrinsic vs. tissue-extrinsic myeloid cells in NICM remains poorly understood. Here, we show that cardiac resident macrophage proliferation occurs within the first week following pressure overload hypertrophy (POH; a model of heart failure) and is requisite for the heart's adaptive response...
April 30, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29696014/genetic-polymorphism-at-ccl5-is-associated-with-protection-in-chagas-heart-disease-antagonistic-participation-of-ccr1-and-ccr5-cells-in-chronic-chagasic-cardiomyopathy
#15
Angelica Martins Batista, Lucia Elena Alvarado-Arnez, Silvia Marinho Alves, Gloria Melo, Isabela Resende Pereira, Leonardo Alexandre de Souza Ruivo, Andrea Alice da Silva, Daniel Gibaldi, Thayse do E S Protásio da Silva, Virginia Maria Barros de Lorena, Adriene Siqueira de Melo, Ana Karine de Araújo Soares, Michelle da Silva Barros, Vláudia Maria Assis Costa, Cynthia C Cardoso, Antonio G Pacheco, Cristina Carrazzone, Wilson Oliveira, Milton Ozório Moraes, Joseli Lannes-Vieira
Chronic cardiomyopathy is the main clinical manifestation of Chagas disease (CD), a disease caused by Trypanosoma cruzi infection. A hallmark of chronic chagasic cardiomyopathy (CCC) is a fibrogenic inflammation mainly composed of CD8+ and CD4+ T cells and macrophages. CC-chemokine ligands and receptors have been proposed to drive cell migration toward the heart tissue of CD patients. Single nucleotide polymorphisms (SNPs) in CC-chemokine ligand and receptor genes may determine protein expression. Herein, we evaluated the association of SNPs in the CC-chemokines CCL2 (rs1024611) and CCL5 (rs2107538, rs2280788) and the CCL5/RANTES receptors CCR1 (rs3181077, rs1491961, rs3136672) and CCR5 (rs1799987) with risk and progression toward CCC...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29691578/-effects-of-thyroid-hormone-on-macrophage-dysfunction-induced-by-oxidized-low-density-lipoprotein
#16
Yu Ning, Ming Zhang, Yun-Hui DU, Hui-Na Zhang, Lin-Yi Li, Yan-Wen Qin, Wan-Wan Wen, Quan-Ming Zhao
It has been recognized that patients with hypothyroidism have higher risks of atherosclerosis and coronary heart disease, however, the mechanisms are largely unknown. Considering that macrophage dysfunction plays an important role in the formation and development of atherosclerosis plaques, this study aimed to investigate the direct effects of thyroid hormone on macrophage functions and to provide new insight for the mechanism of hypothyroid atherosclerosis. RAW264.7 cells (mouse leukaemic monocyte macrophage cell line) were incubated with oxidized low-density lipoprotein (oxLDL) to establish macrophage foam cells model in vitro, and the protective effects of different concentration of thyroxine (T4) on the macrophage foam cells function were explored...
April 25, 2018: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/29680681/hdac-inhibition-helps-post-mi-healing-by-modulating-macrophage-polarization
#17
Denise Kimbrough, Sabina H Wang, Lillianne H Wright, Santhosh K Mani, Harinath Kasiganesan, Amanda C LaRue, Qi Cheng, Satish N Nadig, Carl Atkinson, Donald R Menick
AIMS: Following an acute myocardial infarction (MI) the extracellular matrix (ECM) undergoes remodeling in order to prevent dilation of the infarct area and maintain cardiac output. Excessive and prolonged inflammation following an MI exacerbates adverse ventricular remodeling. Macrophages are an integral part of the inflammatory response that contribute to this remodeling. Treatment with histone deacetylase (HDAC) inhibitors preserves LV function and myocardial remodeling in the post-MI heart...
April 19, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29678661/role-of-heat-shock-transcription-factor-1-hsf1-upregulated-macrophage-in-ameliorating-pressure-overload-induced-heart-failure-in-mice
#18
Peizhao Du, Yaowei Chang, Fangjie Dai, Chunyan Wei, Qi Zhang, Jiming Li
In order to explore the role of macrophages in HSF1-mediated alleviation of heart failure, mice model of pressure overload-induced heart failure was established using transverse aortic constriction (TAC). Changes in cardiac function and morphology were studied in TAC and SHAM groups using ultrasonic device, tissue staining, electron microscopy, real-time quantitative polymerase chain reaction (RT-QPCR), and Western blotting. We found that mice in the TAC group showed evidence of impaired cardiac function and aggravation of fibrosis on ultrasonic and histopathological examination when compared to those in the SHAM group...
April 17, 2018: Gene
https://www.readbyqxmd.com/read/29674325/adenylate-cyclase-type-9-adcy9-inactivation-protects-from-atherosclerosis-only-in-the-absence-of-cholesteryl-ester-transfer-protein-cetp
#19
Yohann Rautureau, Vanessa Deschambault, Marie-Ève Higgins, Daniel Rivas, Mélanie Mecteau, Pascale Geoffroy, Géraldine Miquel, Kurunradeth Uy, Rocio Sanchez, Véronique Lavoie, Geneviève Brand, Audrey Nault, Pierre-Marc Williams, Maria Laura Suarez, Nolwenn Merlet, Line Lapointe, Natacha Duquette, Marc-Antoine Gillis, Samaneh Samami, Gaétan Mayer, Philippe Pouliot, Adeline Raignault, Foued Maafi, Mathieu R Brodeur, Sylvie Levesque, Marie-Claude Guertin, Marie-Pierre Dubé, Éric Thorin, David Rhainds, Éric Rhéaume, Jean-Claude Tardif
Background -Pharmacogenomic studies have shown that ADCY9 genotype determines the effects of the cholesteryl ester transfer protein (CETP) inhibitor dalcetrapib on cardiovascular events and atherosclerosis imaging. The underlying mechanisms responsible for the interactions between ADCY9 and CETP activity have not yet been determined. Methods - Adcy9 -inactivated ( Adcy9 Gt/Gt ) and wild-type (WT) mice, that were or not transgenic for the CETP gene (CETPtg Adcy9 Gt/Gt and CETPtg Adcy9 WT ), were submitted to an atherogenic protocol (injection of an AAV8 expressing a PCSK9 gain-of-function variant and 0...
April 19, 2018: Circulation
https://www.readbyqxmd.com/read/29674123/effects-of-dietary-toxic-cyanobacteria-and-ammonia-exposure-on-immune-function-of-blunt-snout-bream-megalabrama-amblycephala
#20
Hu Xia, Ting Song, Li Wang, Liangsen Jiang, Qiting Zhou, Weimin Wang, Liangguo Liu, Pinhong Yang, Xuezhen Zhang
Cyanobacterial blooms caused by water eutrophication have become a worldwide problem. During the degradation of toxic cyanobacterial blooms, elevated ammonia and microcystins concentrations co-occur and exert toxicity on fish. Up to now, the combined effect of microcystins and ammonia on fish immunotoxicity has not been reported. The present study investigated immune responses of blunt snout bream (Megalabrama amblycephala) to dietary toxic cyanobacteria and ammonia exposure. Megalobrama amblycephala were exposed to solutions with different concentrations of NH3 -N (0, 0...
April 16, 2018: Fish & Shellfish Immunology
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