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https://www.readbyqxmd.com/read/28724795/alx-receptor-ligands-define-a-biochemical-endotype-for-severe-asthma
#1
Isabell Ricklefs, Ioanna Barkas, Melody G Duvall, Manuela Cernadas, Nicole L Grossman, Elliot Israel, Eugene R Bleecker, Mario Castro, Serpil C Erzurum, John V Fahy, Benjamin M Gaston, Loren C Denlinger, David T Mauger, Sally E Wenzel, Suzy A Comhair, Andrea M Coverstone, Merritt L Fajt, Annette T Hastie, Mats W Johansson, Michael C Peters, Brenda R Phillips, Bruce D Levy
BACKGROUND: In health, inflammation resolution is an active process governed by specialized proresolving mediators and receptors. ALX/FPR2 receptors (ALX) are targeted by both proresolving and proinflammatory ligands for opposing signaling events, suggesting pivotal roles for ALX in the fate of inflammatory responses. Here, we determined if ALX expression and ligands were linked to severe asthma (SA). METHODS: ALX expression and levels of proresolving ligands (lipoxin A4 [LXA4], 15-epi-LXA4, and annexin A1 [ANXA1]), and a proinflammatory ligand (serum amyloid A [SAA]) were measured in bronchoscopy samples collected in Severe Asthma Research Program-3 (SA [n = 69], non-SA [NSA, n = 51] or healthy donors [HDs, n = 47])...
July 20, 2017: JCI Insight
https://www.readbyqxmd.com/read/28721450/smad3-and-bmal1-regulate-p21-and-s100a4-expression-in-myocardial-stromal-fibroblasts-via-tnf-%C3%AE
#2
Fuyuki Sato, Akira Kohsaka, Kana Takahashi, Saki Otao, Yusuke Kitada, Yoshiyuki Iwasaki, Yasuteru Muragaki
Bmal1, a clock gene, is associated with depression, hypertrophy, metabolic syndrome and diabetes. Smad3, which is involved in the TGF-β signaling pathway, plays an important role in the regulation of tumor progression, fibrosis, obesity and diabetes. Our previous report showed that Smad3 has circadian expression in mouse livers. In the current study, we focused on the heart, especially on the myocardial stromal fibroblasts because the roles of Bmal1 and Smad3 in this tissue are poorly understood. Bmal1 and Smad3 have circadian expression in mouse hearts, and their circadian expression patterns were similar...
July 18, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28716663/time-course-of-plasma-inflammatory-mediators-in-a-rat-model-of-brain-death
#3
Majid Esmaeilzadeh, Mahmoud Sadeghi, Roland Galmbacher, Volker Daniel, Jürgen Knapp, Hans E Heissler, Joachim K Krauss, Arianeb Mehrabi
BACKGROUND: Brain death (BD) is a donor-associated risk factor that negatively affects transplantation outcome. The inflammation associated with BD appears to have a negative effect on organ quality. Complement activation, apoptosis, and pro-inflammatory cytokine and chemokine expression are significantly increased after BD. To better understand this process, we investigated plasma chemokine and cytokine levels for 8h after BD in a rodent model. METHODS: Thirteen healthy adult male Sprague Dawley rats were intubated and mechanically ventilated...
July 14, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28705316/cell-specific-pathways-supporting-persistent-fibrosis-in-heart-failure
#4
Stephen D Farris, Creighton Don, Deri Helterline, Christopher Costa, Tabitha Plummer, Susanne Steffes, Claudius Mahr, Nahush A Mokadam, April Stempien-Otero
BACKGROUND: Only limited data exist describing the histologic and noncardiomyocyte function of human myocardium in end-stage heart failure (HF). OBJECTIVES: The authors sought to determine changes in noncardiomyocyte cellular activity in patients with end-stage HF after left ventricular assist device (LVAD)-induced remodeling to identify mechanisms impeding recovery. METHODS: Myocardium was obtained from subjects undergoing LVAD placement and/or heart transplantation...
July 18, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28704660/pathway-analysis-of-systemic-transcriptome-responses-to-injected-polystyrene-particles-in-zebrafish-larvae
#5
Wouter J Veneman, Herman P Spaink, Nadja R Brun, Thijs Bosker, Martina G Vijver
Microplastics are a contaminant of emergent concern in the environment, however, to date there is a limited understanding on their movement within organisms and the response of organisms. In the current study zebrafish embryos at different development stages were exposed to 700nm fluorescent polystyrene (PS) particles and the response pathway after exposure was investigated using imaging and transcriptomics. Our results show limited spreading of particles within the larvae after injection during the blastula stage...
July 4, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28703031/lower-circulating-migration-inhibitory-factor-protein-is-associated-with-metabolic-syndrome-and-diabetes
#6
Altan Onat, Evin Ademoğlu, Günay Can, Neslihan Çoban, Ayşem Kaya, Hüsniye Yüksel
AIM: The controversial relationship between macrophage migration inhibitory factor (MIF) and the likelihood of cardiometabolic diseases was investigated. Results/methodology: Assayed MIF protein from 1225 adults was cross-sectionally analyzed. MIF was independently inversely associated with age, total testosterone and positively with high-density lipoprotein-cholesterol. In men MIF correlation with age, testosterone and waist circumference converted from inverse in the upper to positive in the bottom MIF third...
July 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28702876/cardiovascular-histopathology-of-a-11-year-old-with-mucopolysaccharidosis-vii-demonstrates-fibrosis-macrophage-infiltration-and-arterial-luminal-stenosis
#7
Valerie Lew, Louis Pena, Robert Edwards, Raymond Y Wang
Mucopolysaccharidosis type VII (MPS VII) is caused by β-glucuronidase deficiency, resulting in lysosomal accumulation of glycosaminoglycans (GAGs) and multisystemic disease. We present cardiovascular gross and histopathology findings from a 11-year-old MPS VII male, who expired after developing ventricular fibrillation following anesthesia induction. Gross anatomic observations were made at autopsy; postmortem formalin-fixed paraffin-embedded samples of the carotid artery, aorta, myocardium, and valves were sectioned and stained with hematoxylin-eosin, Verhoeff-Van Gieson, CD68, and trichrome stains...
July 13, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28701679/nanoparticle-mediated-delivery-of-pitavastatin-to-monocytes-macrophages-inhibits-left-ventricular-remodeling-after-acute-myocardial-infarction-by-inhibiting-monocyte-mediated-inflammation
#8
Yajing Mao, Jun-Ichiro Koga, Masaki Tokutome, Tetsuya Matoba, Gentaro Ikeda, Kaku Nakano, Kensuke Egashira
Left ventricular (LV) remodeling after myocardial infarction (MI) causes heart failure. Although medical therapies including angiotensin converting enzyme inhibitors show inhibitory effects on post-infarct LV remodeling, the prognosis of patients with post-infarct heart failure is still poor. Accumulating evidence suggests that an inflammatory response is implicated in the process of post-infarct LV remodeling. Therefore, we hypothesized that anti-inflammatory therapy by nanoparticle-mediated monocyte/macrophage-targeting delivery of pitavastatin may protect the heart from post-infarct LV remodeling...
July 13, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28700904/inhibition-of-high-glucose-induced-inflammation-and-fibrosis-by-a-novel-curcumin-derivative-prevents-renal-and-heart-injury-in-diabetic-mice
#9
Hongjin Chen, Xi Yang, Kongqin Lu, Chun Lu, Yunjie Zhao, Suqing Zheng, Jieli Li, Zhangjian Huang, Yi Huang, Yali Zhang, Guang Liang
Hyperglycemia-induced inflammation and fibrosis have important roles in the pathogenesis of diabetic nephropathy and cardiomyopathy. With inflammatory cytokines and signaling pathways as important mediators, targeting inflammation may be an effective approach to new avenue for treating diabetic complications. J17, a molecule with structural similarities to curcumin, exhibited good anti-inflammatory activities by inhibiting LPS-induced inflammatory response in macrophages. However, its ability to alleviate hyperglycemia-induced injury via its anti-inflammatory actions remained unclear...
July 9, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28694024/iron-metabolism-state-of-the-art
#10
R Daher, Z Karim
Iron homeostasis relies on the amount of its absorption by the intestine and its release from storage sites, the macrophages. Iron homeostasis is also dependent on the amount of iron used for the erythropoiesis. Hepcidin, which is synthesized predominantly by the liver, is the main regulator of iron metabolism. Hepcidin reduces serum iron by inhibiting the iron exporter, ferroportin expressed both tissues, the intestine and the macrophages. In addition, in the enterocytes, hepcidin inhibits the iron influx by acting on the apical transporter, DMT1...
July 7, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28691408/the-role-of-cd36-receptor-in-the-pathogenesis-of-atherosclerosis
#11
REVIEW
Barbara Choromańska, Piotr Myśliwiec, Katarzyna Choromańska, Jacek Dadan, Adrian Chabowski
Atherosclerosis is a progressive, chronic inflammation pending in artery walls. Oxidized low density lipoproteins (ox-LDL) play important role in atherosclerotic plaque formation. ox-LDL are taken up by macrophages mainly through scavenger receptors, among which CD36 is considered to be the most important. Animal studies have shown that crossing atherogenic mice with a strain lacking the expression of CD36 prevented the development of atherosclerosis despite diet rich in saturated LCFA. In humans, autopsy studies performed in obese patients have demonstrated increased expression of CD36 receptor on macrophages, comprised within atherosclerotic plaques...
June 27, 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28691076/self-assembling-cyclic-d-l-%C3%AE-peptides-as-modulators-of-plasma-hdl-function-a-supramolecular-approach-toward-antiatherosclerotic-agents
#12
Yannan Zhao, Luke J Leman, Debra J Search, Ricardo A Garcia, David A Gordon, Bruce E Maryanoff, M Reza Ghadiri
There is great interest in developing new modes of therapy for atherosclerosis to treat coronary heart disease and stroke, particularly ones that involve modulation of high-density lipoproteins (HDLs). Here, we describe a new supramolecular chemotype for altering HDL morphology and function. Guided by rational design and SAR-driven peptide sequence enumerations, we have synthesized and determined the HDL remodeling activities of over 80 cyclic d,l-α-peptides. We have identified a few distinct sequence motifs that are effective in vitro in remodeling human and mouse plasma HDLs to increase the concentration of lipid-poor pre-beta HDLs, which are key initial acceptors of cholesterol in the reverse cholesterol transport (RCT) process, and concomitantly promote cholesterol efflux from macrophage cells...
June 28, 2017: ACS Central Science
https://www.readbyqxmd.com/read/28690546/repeated-excessive-exercise-attenuates-the-anti-inflammatory-effects-of-exercise-in-older-men
#13
Ronni E Sahl, Peter R Andersen, Katja Gronbaek, Thomas H Morville, Mads Rosenkilde, Hanne K Rasmusen, Steen S Poulsen, Clara Prats, Flemming Dela, Jørn W Helge
Introduction/Purpose: A number of studies have investigated the effect of training with a moderate exercise dose (3-6 h/weekly) on the inflammatory profile in blood, and the data are inconsistent. Cross-sectional studies indicate a positive effect of physical activity level on inflammation levels and risk of metabolic disease. However, it is not clear whether this may be dose dependent and if very prolonged repeated exercise therefore may be beneficial for low-grade inflammation. Based on this we studied how excessive repeated prolonged exercise influenced low-grade inflammation and adipose tissue anti-inflammatory macrophage content in six older male recreationally trained cyclists...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28683357/exercise-improves-cytokine-profile-in-hiv-infected-people-a-randomized-clinical-trial
#14
Rafael Evangelista Pedro, Nadia Candido, Débora Alves Guariglia, Bruno Pereira Melo, Dennis Armando Bertolini, Sidney Barnabé Peres, Solange Marta Franzói de Moraes
PURPOSE: Verify the effects of concurrent training on cytokines in people living with HIV under antiretroviral therapy (ART) treatment. METHODS: This was a blinded, parallel-group, clinical trial, where 49 participants, divided in two groups, either control group or concurrent training group, took part in the intervention. The control group performed recreational activities and concurrent training group participated of 16-week, 3 times per week of heart rate guided-aerobic plus resistance training for major muscular groups...
July 3, 2017: Cytokine
https://www.readbyqxmd.com/read/28674269/detection-of-ceramide-a-risk-factor-for-coronary-artery-disease-in-human-coronary-plaques-by-fluorescent-angioscopy
#15
Yasumi Uchida, Yasuto Uchida, Takanobu Kobayashi, Seiichiro Shirai, Nobuyuki Hiruta, Ei Shimoyama, Tsuyoshi Tabata
BACKGROUND: The presence of ceramide in human coronary plaques is a risk factor for ischemic heart disease, but its visualization in the human vessel wall is currently beyond the scope of any available imaging techniques.Methods and Results:Deposition of ceramide was examined by fluorescent angioscopy (FA) and microscopy (FM) using golden fluorescence (Go) as a specific marker of ceramide in yellow plaques, which were obtained from 23 autopsy subjects and classified by conventional angioscopy and histology...
June 30, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28667562/the-innate-immune-response-in-myocardial-infarction-repair-and-regeneration
#16
Rebecca Gentek, Guillaume Hoeffel
Following myocardial infarction (MI), resident innate immune cells such as macrophages, innate lymphoid cells, and mast cells rapidly coordinate their function to contain inflammation by removing dying cells and promoting cardiomyocyte replenishment. To sustain local tissue repair functions, hematopoietic progenitors are mobilized from the bone marrow to the spleen to generate subsequent myeloid cells such as monocytes and neutrophils, which are rapidly recruited at the site of MI. A finely tuned balance between local adaptation and recruitment controls the overall outcome of the cardiac tissue regeneration versus repair and scar formation...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28667560/cardiac-autoimmunity-myocarditis
#17
William Bracamonte-Baran, Daniela Čiháková
Myocarditis is the inflammation of the muscle tissues of the heart (myocardium). After a pathologic cardiac-specific inflammatory process, it may progress to chronic damage and dilated cardiomyopathy. The latter is characterized by systolic dysfunction, whose clinical correlate is heart failure. Nevertheless, other acute complications may arise as consequence of tissue damage and electrophysiologic disturbances. Different etiologies are involved in triggering myocarditis. In some cases, such as giant cell myocarditis or eosinophilic necrotizing myocarditis, it is an autoimmune process...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28667557/atherosclerosis
#18
Mohammed Shamim Rahman, Kevin Woollard
In this chapter, we discuss the manner through which the immune system regulates the cardiovascular system in health and disease. We define the cardiovascular system and elements of atherosclerotic disease, the main focus in this chapter. Herein we elaborate on the disease process that can result in myocardial infarction (heart attack), ischaemic stroke and peripheral arterial disease. We have discussed broadly the homeostatic mechanisms in place that help autoregulate the cardiovascular system including the vital role of cholesterol and lipid clearance as well as the role lipid homeostasis plays in cardiovascular disease in the context of atherosclerosis...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28667518/screening-cytokine-chemokine-profiles-in-serum-and-organs-from-an-endotoxic-shock-mouse-model-by-liquichip
#19
Jinghua Liu, Juan Wang, Haihua Luo, Zhijie Li, Tianyu Zhong, Jing Tang, Yong Jiang
Studying the cytokine profiles in animal models or patients with sepsis provides an experimental basis for the identification of diagnostic biomarkers and therapeutic targets. In this study, we used a liquid protein chip (LiquiChip), also known as flexible multi-analyte profiling technology, to perform quantitative analyses of several cytokines and chemokines (e.g., IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-12, TNF-α, IFN-γ, granulocyte-macrophage colony-stimulating factor, keratinocyte chemoattractant, monocyte chemoattractant protein, monokine induced by gamma interferon, IFN-γ-inducible protein 10, and macrophage inflammatory protein 1 alpha)...
May 29, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28662157/sex-dependent-aortic-valve-pathology-in-patients-with-rheumatic-heart-disease
#20
Feng Xiao, Rui Zheng, Di Yang, Kejiang Cao, Shijiang Zhang, Bingruo Wu, Yongfeng Shao, Bin Zhou
BACKGROUND: Rheumatic heart disease is an autoimmune disease caused by group A streptococci infection and frequently affects the aortic valve. Sex differences are common in the disease progression, treatment, and outcome. However, little is known about the sex differences in the pathology of aortic valves in rheumatic heart disease. DESIGN: We studied the end-stage calcific aortic valves from male versus female patients to reveal the sex-dependent pathology differences and molecular changes associated with requiring valve replacement...
2017: PloS One
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