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atherosclerosis, neutrophils

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https://www.readbyqxmd.com/read/29597117/native-and-myeloperoxidase-oxidized-low-density-lipoproteins-act-in-synergy-to-induce-release-of-resolvin-d1-from-endothelial-cells
#1
Damien Dufour, Alia Khalil, Vincent Nuyens, Alexandre Rousseau, Cédric Delporte, Caroline Noyon, Melissa Cortese, Florence Reyé, Valérie Pireaux, Jean Nève, Luc Vanhamme, Bernard Robaye, Christophe Lelubre, Jean-Marc Desmet, Martine Raes, Karim Zouaoui Boudjeltia, Pierre Van Antwerpen
BACKGROUND AND AIMS: Oxidation of native low-density lipoproteins (LDLs-nat) plays an important role in the development of atherosclerosis. A major player in LDL-nat oxidation is myeloperoxidase (MPO), a heme enzyme present in azurophil granules of neutrophils and monocytes. MPO produces oxidized LDLs called Mox-LDLs, which cause a pro-inflammatory response in human microvascular endothelial cells (HMEC), monocyte/macrophage activation and formation of foam cells. Resolvin D1 (RvD1) is a compound derived from the metabolism of the polyunsaturated fatty acid DHA, which promotes resolution of inflammation at the ng/ml level...
March 8, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29596498/analyses-of-genome-wide-association-data-cytokines-and-gene-expression-in-african-americans-with-benign-ethnic-neutropenia
#2
Bashira A Charles, Matthew M Hsieh, Adebowale A Adeyemo, Daniel Shriner, Edward Ramos, Kyung Chin, Kshitij Srivastava, Neil A Zakai, Mary Cushman, Leslie A McClure, Virginia Howard, Willy A Flegel, Charles N Rotimi, Griffin P Rodgers
BACKGROUND: Benign ethnic neutropenia (BEN) is a hematologic condition associated with people of African ancestry and specific Middle Eastern ethnic groups. Prior genetic association studies in large population showed that rs2814778 in Duffy Antigen Receptor for Chemokines (DARC) gene, specifically DARC null red cell phenotype, was associated with BEN. However, the mechanism of this red cell phenotype leading to low white cell count remained elusive. METHODS: We conducted an extreme phenotype design genome-wide association study (GWAS), analyzed ~16 million single nucleotide polymorphisms (SNP) in 1,178 African-Americans individuals from the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study and replicated from 819 African-American participants in the Atherosclerosis Risk in Communities (ARIC) study...
2018: PloS One
https://www.readbyqxmd.com/read/29572206/roles-of-pad4-and-netosis-in-experimental-atherosclerosis-and-arterial-injury-implications-for-superficial-erosion
#3
Grégory Franck, Thomas L Mawson, Eduardo J Folco, Roberto Molinaro, Victoria Ruvkun, Daniel Engelbertsen, Xin Liu, Yevgenia Tesmenitsky, Eugenia Shvartz, Galina K Sukhova, Jean-Baptiste Michel, Antonino Nicoletti, Andrew H Lichtman, Denisa D Wagner, Kevin J Croce, Peter Libby
<u>Rationale:</u> Neutrophils likely contribute to the thrombotic complications of human atheromata. In particular, neutrophil extracellular traps (NETs) could exacerbate local inflammation and amplify and propagate arterial intimal injury and thrombosis. Peptidyl arginine deiminase 4 (PAD4) participates in NET formation, but understanding of this enzyme's role in atherothrombosis remains scant. <u>Objective:</u> This study tested the hypothesis that PAD4 and NETs influence experimental atherogenesis and in processes implicated in superficial erosion, a form of plaque complication we previously associated with NETs...
March 23, 2018: Circulation Research
https://www.readbyqxmd.com/read/29568119/trem-1-multimerization-is-essential-for-its-activation-on-monocytes-and-neutrophils
#4
Kevin Carrasco, Amir Boufenzer, Lucie Jolly, Helene Le Cordier, Guanbo Wang, Albert Jr Heck, Adelheid Cerwenka, Emilie Vinolo, Alexis Nazabal, Alexandre Kriznik, Pierre Launay, Sebastien Gibot, Marc Derive
The triggering receptor expressed on myeloid cells-1 (TREM-1) is a receptor expressed on innate immune cells. By promoting the amplification of inflammatory signals that are initially triggered by Toll-like receptors (TLRs), TREM-1 has been characterized as a major player in the pathophysiology of acute and chronic inflammatory diseases, such as septic shock, myocardial infarction, atherosclerosis, and inflammatory bowel diseases. However, the molecular events leading to the activation of TREM-1 in innate immune cells remain unknown...
March 22, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29567680/chronic-intake-of-the-selective-serotonin-reuptake-inhibitor-fluoxetine-enhances-atherosclerosis
#5
Martina Rami, Raquel Guillamat-Prats, Petteri Rinne, Melanie Salvermoser, Larisa Ring, Mariaelvy Bianchini, Xavier Blanchet, Remco T A Megens, Yvonne Döring, Barbara Walzog, Oliver Soehnlein, Christian Weber, Alexander Faussner, Sabine Steffens
OBJECTIVE: Cardiovascular diseases and depression are the leading causes of disability in Western countries. Clinical data on potential cardiovascular effects of serotonin reuptake inhibitors (SSRIs), the most commonly used antidepressant drugs, are controversial. In addition to blocking serotonin reuptake transporter in the brain, SSRIs deplete the major peripheral serotonin (5-hydroxytryptamine [5-HT]) storage by inhibiting serotonin reuptake transporter-mediated uptake in platelets...
March 22, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29559676/obesity-induced-endothelial-dysfunction-is-prevented-by-neutrophil-extracellular-trap-inhibition
#6
Hui Wang, Qian Wang, Jessica Venugopal, Jintao Wang, Kyle Kleiman, Chiao Guo, Daniel T Eitzman
Endothelial dysfunction precedes atherosclerosis and may constitute a critical link between obesity-related inflammation and cardiovascular disease. Neutrophil extracellular traps (NETs) have been shown to promote vascular damage in murine models of autoimmune disease and atherosclerosis. The impact of NETs towards endothelial dysfunction associated with obesity is unknown. Using a diet-induced obesity (DIO) mouse model, this study investigated whether the inhibition or degradation of NETs could reduce the endothelial dysfunction observed in DIO mice...
March 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29518749/sglt2-inhibition-reduces-atherosclerosis-by-enhancing-lipoprotein-clearance-in-ldlr-type-1-diabetic-mice
#7
Annas Al-Sharea, Andrew J Murphy, L A Huggins, Y Hu, Ira J Goldberg, Prabhakara R Nagareddy
BACKGROUND AND AIMS: Leukocytosis, particularly monocytosis, has been shown to promote atherosclerosis in both diabetic and non-diabetic mouse models. We previously showed that hyperglycemia independently promotes monocytosis and impairs the resolution of atherosclerosis. Since patients with chronic diabetes often develop dyslipidemia and also have increased risk for atherosclerosis, we sought to examine how controlling blood glucose affects atherosclerosis development in the presence of severe hyperlipidemia...
March 2, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29506719/elevations-in-neutrophils-with-obstructive-sleep-apnea-the-multi-ethnic-study-of-atherosclerosis-mesa
#8
Glaucylara Reis Geovanini, Rui Wang, Jia Weng, Russell Tracy, Nancy S Jenny, Ary L Goldberger, Madalena D Costa, Yongmei Liu, Peter Libby, Susan Redline
BACKGROUND: Obstructive sleep apnea (OSA) associates with increased risk of cardiovascular diseases (CVD). Immune abnormalities and surges in sympathetic activity accompany OSA and CVD. We hypothesized that OSA associates with leukocytosis partially by abnormalities in autonomic nervous system (ANS) function that would suggest a pathway linking OSA and CVD. METHODS: Participants from the Multi-Ethnic Study of Atherosclerosis (MESA), a prospective cohort of individuals initially without overt CVD, underwent polysomnography and assays for white blood cells (WBC) and subsets...
April 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29487597/loss-of-rictor-in-monocyte-macrophages-suppresses-their-proliferation-and-viability-reducing-atherosclerosis-in-ldlr-null-mice
#9
Vladimir R Babaev, Jiansheng Huang, Lei Ding, Youmin Zhang, James M May, MacRae F Linton
Background: Rictor is an essential component of mammalian target of rapamycin (mTOR) complex 2 (mTORC2), a conserved serine/threonine kinase that may play a role in cell proliferation, survival and innate or adaptive immune responses. Genetic loss of Rictor inactivates mTORC2, which directly activates Akt S473 phosphorylation and promotes pro-survival cell signaling and proliferation. Methods and results: To study the role of mTORC2 signaling in monocytes and macrophages, we generated mice with myeloid lineage-specific Rictor deletion (M Rictor -/- )...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29459661/elements-of-the-complete-blood-count-associated-with-cardiovascular-disease-incidence-findings-from-the-epic-nl-cohort-study
#10
Camille Lassale, Alyscia Curtis, Itziar Abete, Yvonne T van der Schouw, W M Monique Verschuren, Yunxia Lu, H B As Bueno-de-Mesquita
All blood cells (white blood cells [WBC], red blood cells [RBC] and platelets) can play a role in atherosclerosis. Complete blood count (CBC) is widely available in clinical practice but utility as potential risk factors for cardiovascular disease (CVD) is uncertain. Our aim was to assess the associations of pre-diagnostic CBC with incidence of CVD in 14,362 adults free of CVD and aged 47.8 (±11.7) years at baseline, followed-up for 11.4 years (992 incident cases). Cox proportional hazards regressions were used to estimate HRs and 95%CI...
February 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29437605/genetic-and-pharmacologic-inhibition-of-the-neutrophil-elastase-inhibits-experimental-atherosclerosis
#11
Guanmei Wen, Weiwei An, Jiangyong Chen, Eithne M Maguire, Qishan Chen, Feng Yang, Stuart W A Pearce, Maria Kyriakides, Li Zhang, Shu Ye, Sussan Nourshargh, Qingzhong Xiao
BACKGROUND: To investigate whether neutrophil elastase (NE) plays a causal role in atherosclerosis, and the molecular mechanisms involved. METHODS AND RESULTS: NE genetic-deficient mice (Apolipoprotein E -/- /NE -/- mice), bone marrow transplantation, and a specific NE inhibitor (GW311616A) were employed in this study to establish the causal role of NE in atherosclerosis. Aortic expression of NE mRNA and plasma NE activity was significantly increased in high-fat diet (HFD)-fed wild-type (WT) (Apolipoprotein E -/- ) mice but, as expected, not in NE-deficient mice...
February 8, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29410709/genomic-5-mc-contents-in-peripheral-blood-leukocytes-were-independent-protective-factors-for-coronary-artery-disease-with-a-specific-profile-in-different-leukocyte-subtypes
#12
Qianyun Deng, Wei Huang, Chunyan Peng, Jiajia Gao, Zuhua Li, Xueping Qiu, Na Yang, Bifeng Yuan, Fang Zheng
Background: Alterations in DNA methylation are demonstrated in atherosclerosis pathogenesis. However, changing rules of global DNA methylation and hydroxymethylation in peripheral blood leukocytes (PBLs) and different blood cell subtypes of coronary artery disease (CAD) patients are still inconclusive, and much less is known about mechanisms underlying. Results: We recruited 265 CAD patients and 270 healthy controls with genomic DNA from PBLs, of which 50 patients and 50 controls were randomly chosen with DNA from isolated neutrophils, lymphocytes and monocytes, and RNA from PBLs...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29404659/the-phenomenon-of-neutrophil-extracellular-traps-in-vascular-diseases
#13
REVIEW
Dorota Dąbrowska, Ewa Jabłońska, Marzena Garley, Jolanta Sawicka-Powierza, Karolina Nowak
Vascular diseases constitute a global health issue due to the increasing number of cases of patients with these diseases. The pathogenesis of the majority of these diseases, including atherosclerosis and thrombosis, is complex and not yet fully understood. One of the major causes for their occurrence can be immune disorders resulting in the development of a chronic inflammation within the vessels. In recent years, studies have placed emphasis on the role of neutrophils in the development of these diseases, i...
February 5, 2018: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/29401724/emerging-roles-of-tumor-necrosis-factor-stimulated-gene-6-in-the-pathophysiology-and-treatment-of-atherosclerosis
#14
REVIEW
Rena Watanabe, Yuki Sato, Nana Ozawa, Yui Takahashi, Shinji Koba, Takuya Watanabe
Tumor necrosis factor-stimulated gene-6 (TSG-6) is a 35-kDa glycoprotein that has been shown to exert anti-inflammatory effects in experimental models of arthritis, acute myocardial infarction, and acute cerebral infarction. Several lines of evidence have shed light on the pathophysiological roles of TSG-6 in atherosclerosis. TSG-6 suppresses inflammatory responses of endothelial cells, neutrophils, and macrophages as well as macrophage foam cell formation and vascular smooth muscle cell (VSMC) migration and proliferation...
February 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29395573/increased-levels-of-lipocalin-2-in-palmoplantar-pustular-psoriasis
#15
Kerstin Wolk, Yvonne Frambach, Arnd Jacobi, Dagmar Wilsmann-Theis, Sandra Phillipp, Ellen Witte-Händel, Jörg Wenzel, Rotraut Mössner, Robert Sabat
BACKGROUND: Palmoplantar pustular psoriasis (PPP) is a recalcitrant chronic skin disease affecting the palms and soles. OBJECTIVE: To identify and characterize pathogenetic players in PPP. METHODS: Clinical and anamnestic data as well as skin and blood samples of 60 PPP patients were collected. Healthy participants served as controls. Analysis of patient samples and cultured primary skin cells was performed by ELISA, qRT-PCR, and immunohistochemistry...
January 11, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29393091/increased-serum-leptin-levels-in-new-onset-untreated-female-patients-with-coronary-artery-disease-and-positively-associated-with-inflammatory-markers
#16
Ying Du, Sheng-Hua Yang, Sha Li, Xi Zhao, Yan Zhang, Di Sun, Cheng-Gang Zhu, Na-Qiong Wu, Yuan-Lin Guo, Rui-Xia Xu, Ping Qing, Ying Gao, Jing Sun, Jian-Jun Li
BACKGROUND/AIMS: Previous studies have suggested that leptin was associated with atherosclerosis and involved in inflammation. Gender differences between leptin and inflammatory markers have been evaluated less in untreated patients with stable coronary artery disease (CAD). METHODS: In this study, a total of 394 consecutive Chinese patients who received coronary artery angiography were enrolled, including 243 patients with CAD and 151 non-CAD controls. The baseline clinical characteristics were collected and serum leptin levels were determined using ELISA...
January 30, 2018: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/29387942/partners-in-crime-neutrophils-and-monocytes-macrophages-in-inflammation-and-disease
#17
REVIEW
Kathryn Prame Kumar, Alyce J Nicholls, Connie H Y Wong
Neutrophils are becoming recognized as highly versatile and sophisticated cells that display de novo synthetic capacity and potentially prolonged lifespan. Emerging concepts such as neutrophil heterogeneity and plasticity have revealed that, under pathological conditions, neutrophils may differentiate into discrete subsets defined by distinct phenotypic and functional characteristics. Indeed, these newly described neutrophil subsets will undoubtedly add to the already complex interactions between neutrophils and other immune cell types for an effective immune response...
January 31, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29375221/the-association-between-monocyte-hdl-c-ratio-and-syntax-score-and-syntax-score-ii-in-stemi-patients-treated-with-primary-pci
#18
Metin Çağdaş, Süleyman Karakoyun, Mahmut Yesin, İbrahim Rencüzoğulları, Yavuz Karabağ, Mahmut Uluganyan, Mustafa Ozan Gürsoy, İnanç Artaç, Doğan İliş, Eray Atalay, Öznur Sadioğlu Çağdaş
Background: Monocyte to high-density-lipoprotein cholesterol ratio (MHR) simply reflects proatherogenic and antiatherogenic balance and high level of this ratio is associated with severity of coronary atherosclerosis and cardiac events. We investigated the association between MHR and coronary artery disease severity using SYNTAX score and SYNTAX score II (SSII) in ST-elevation myocardial infarction (STEMI) patients treated with primary percutaneous coronary intervention (pPCI). Methods: A total of 315 consecutive patients with STEMI who underwent pPCI from January 2014 to January 2016 were enrolled...
January 2018: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/29365782/neutrophil-to-lymphocyte-ratio-and-abdominal-aortic-atherosclerosis-among-asymptomatic-individuals
#19
Carolina Stangenhaus, Antonio Gabriele Laurinavicius, Fernando H Y Cesena, Raquel Conceicao, Raul D Santos, Marcio Sommer Bittencourt
No abstract text is available yet for this article.
August 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29364178/disrupting-the-btk-pathway-suppresses-copd-like-lung-alterations-in-atherosclerosis-prone-apoe-mice-following-regular-exposure-to-cigarette-smoke
#20
Jon M Florence, Agnieszka Krupa, Laela M Booshehri, Adrian L Gajewski, Anna K Kurdowska
Chronic obstructive pulmonary disease (COPD) is associated with severe chronic inflammation that promotes irreversible tissue destruction. Moreover, the most broadly accepted cause of COPD is exposure to cigarette smoke. There is no effective cure and significantly, the mechanism behind the development and progression of this disease remains unknown. Our laboratory has demonstrated that Bruton's tyrosine kinase (Btk) is a critical regulator of pro-inflammatory processes in the lungs and that Btk controls expression of matrix metalloproteinase-9 (MMP-9) in the alveolar compartment...
January 24, 2018: International Journal of Molecular Sciences
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