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https://www.readbyqxmd.com/read/28323966/persistent-reduction-of-circulating-myeloid-calcifying-cells-in-acromegaly-relevance-to-the-bone-vascular-axis
#1
Gian Paolo Fadini, Francesca Dassie, Roberta Cappellari, Mariasara Persano, Saula Vigili de Kreutzenberg, Chiara Martini, Matteo Parolin, Angelo Avogaro, Roberto Vettor, Pietro Maffei
Context: Acromegaly is a systemic disease characterized by persistent bone pathology and excess cardiovascular mortality. Despite multiple concomitant risk factors, atherosclerosis does not seem to be accelerated in acromegaly. Objective: To compare the levels of circulating myeloid calcifying cells (MCCs), which promote ectopic calcification and inhibit angiogenesis, in individuals with or without acromegaly. Design: Cross-sectional case-control study...
March 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323396/toll-like-receptor-2-bright-cells-identify-circulating-monocytes-in-human-and-non-human-primates
#2
Erin N Shirk, Brian G Kral, Lucio Gama
Polychromatic flow cytometry is a useful tool for monitoring circulating whole blood monocytes, although gating strategies often vary depending on the study. Increased analyses of the myeloid system have revealed monocytes to be more plastic than previously understood and uncovered changes among surface markers previously considered to be stable. The myeloid system has also been found to have disparate surface markers between mouse, human, and non-human primate studies, which further complicates examination between species...
March 21, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28323130/monocyte-activation-drives-preservation-of-membrane-thiols-by-promoting-release-of-oxidised-membrane-moieties-via-extracellular-vesicles-extracellular-vesicles
#3
K É Szabó-Taylor, E Á Tóth, A M Balogh, B W Sódar, L Kádár, K Pálóczi, N Fekete, A Németh, X Osteikoetxea, K V Vukman, M Holub, É Pállinger, Gy Nagy, P G Winyard, E I Buzás
The redox state of cellular exofacial molecules is reflected by the amount of available thiols. Furthermore, surface thiols can be considered as indicators of immune cell activation. One group of thiol containing proteins, peroxiredoxins, in particular, have been associated with inflammation. In this study, we assessed surface thiols of the U937 and THP1 monocyte cell lines and primary monocytes in vitro upon inflammatory stimulation by irreversibly labelling the cells with a fluorescent derivative of maleimide...
March 16, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28319586/short-term-exercise-training-alters-leukocyte-chemokine-receptors-in-obese-adults
#4
Julianne C Barry, Svetlana Simtchouk, Cody Durrer, Mary E Jung, Jonathan P Little
Obesity is characterized by chronic low-grade inflammation driven by activation and tissue infiltration of circulating leukocytes. Although exercise has anti-inflammatory effects, the impact of exercise on mediators of leukocyte migration is unclear. PURPOSE: To determine the impact of high intensity interval training (HIIT) versus moderate intensity continuous training (MICT), in the absence of weight/fat loss, on circulating chemokines and leukocyte chemokine receptors. METHODS: Thirty-seven inactive obese adults were randomized to two weeks (10 sessions) of HIIT or MICT with fasting blood samples collected before and after training...
March 18, 2017: Medicine and Science in Sports and Exercise
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/28300081/effects-of-dyslipidaemia-on-monocyte-production-and-function-in-cardiovascular-disease
#6
REVIEW
Mohammed Shamim Rahman, Andrew J Murphy, Kevin J Woollard
Monocytes are heterogeneous effector cells involved in the maintenance and restoration of tissue integrity. Monocytes and macrophages are involved in cardiovascular disease progression, and are associated with the development of unstable atherosclerotic plaques. Hyperlipidaemia can accelerate cardiovascular disease progression. However, monocyte responses to hyperlipidaemia are poorly understood. In the past decade, accumulating data describe the relationship between the dynamic blood lipid environment and the heterogeneous circulating monocyte pool, which might have profound consequences for cardiovascular disease...
March 16, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28290214/computational-study-of-cell-adhesion-and-rolling-in-flow-channel-by-meshfree-method
#7
Liqiang Lin, Xiaowei Zeng
Tethering and rolling of circulating leukocytes on the surface of endothelium are critical steps during an inflammatory response. A soft solid cell model was proposed to study monocytes tethering and rolling behaviors on substrate surface in shear flow. The interactions between monocytes and micro-channel surface were modeled by a coarse-grained molecular adhesive potential. The computational model was implemented in a Lagrange-type meshfree Galerkin formulation to investigate the monocyte tethering and rolling process with different flow rates...
March 14, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28289017/activated-tafi-promotes-the-development-of-chronic-thromboembolic-pulmonary-hypertension-a-possible-novel-therapeutic-target
#8
Taijyu Satoh, Kimio Satoh, Nobuhiro Yaoita, Nobuhiro Kikuchi, Junichi Omura, Ryo Kurosawa, Kazuhiko Numano, Elias Al-Mamun, Mohammad Abdul Hai Siddique, Shinichiro Sunamura, Masamichi Nogi, Kota Suzuki, Satoshi Miyata, John Morser, Hiroaki Shimokawa
Rationale: Pulmonary hypertension (PH) is a fatal disease; however, its pathogenesis still remains to be elucidated. Thrombin-activatable fibrinolysis inhibitor (TAFI) is synthesized by the liver and inhibits fibrinolysis. Plasma TAFI levels are significantly increased in chronic thromboembolic PH (CTEPH) patients. Objective: To determine the role of activated TAFI (TAFIa) in the development of CTEPH. Methods and Results: Immunostaining showed that TAFI and its binding partner thrombomodulin (TM) were highly expressed in the pulmonary arteries (PA) and thrombus in patients with CTEPH...
March 13, 2017: Circulation Research
https://www.readbyqxmd.com/read/28283696/myeloid-cells-in-circulation-and-tumor-microenvironment-of-breast-cancer-patients
#9
Salman M Toor, Azharuddin Sajid Syed Khaja, Haytham El Salhat, Issam Faour, Jihad Kanbar, Asif A Quadri, Mohamed Albashir, Eyad Elkord
Pathological conditions including cancers lead to accumulation of a morphological mixture of highly immunosuppressive cells termed as myeloid-derived suppressor cells (MDSC). The lack of conclusive markers to identify human MDSC, due to their heterogeneous nature and close phenotypical and functional proximity with other cell subsets, made it challenging to identify these cells. Nevertheless, expansion of MDSC has been reported in periphery and tumor microenvironment of various cancers. The majority of studies on breast cancers were performed on murine models and hence limited literature is available on the relation of MDSC accumulation with clinical settings in breast cancer patients...
March 10, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28282403/chemokine-binding-protein-m3-limits-atherosclerosis-in-apolipoprotein-e-mice
#10
Dhanya Ravindran, Anisyah Ridiandries, Laura Z Vanags, Rodney Henriquez, Siân Cartland, Joanne T M Tan, Christina A Bursill
Chemokines are important in macrophage recruitment and the progression of atherosclerosis. The 'M3' chemokine binding protein inactivates key chemokines involved in atherosclerosis (e.g. CCL2, CCL5 and CX3CL1). We aimed to determine the effect of M3 on plaque development and composition. In vitro chemotaxis studies confirmed that M3 protein inhibited the activity of chemokines CCL2, CCL5 and CX3CL1 as primary human monocyte migration as well as CCR2-, CCR5- and CX3CR1-directed migration was attenuated by M3...
2017: PloS One
https://www.readbyqxmd.com/read/28279502/circulating-microparticle-subpopulations-in-systemic-lupus-erythematosus-are-affected-by-disease-activity
#11
Patricia López, Javier Rodríguez-Carrio, Aleida Martínez-Zapico, Luis Caminal-Montero, Ana Suárez
BACKGROUND: Immune cells under chronic inflammation shed microparticles (MPs) that could fuel the inflammatory responses and atherosclerosis typically presented in systemic lupus erythematosus (SLE). This study analyzes total and subset-specific MPs from SLE patients and their possible influence on clinical features, leukocyte activation and serum cytokines. METHODS: Total MPs and those derived from platelets, endothelial cells, monocytes, granulocytes and T-cells were quantified in plasma of 106 SLE patients and 33 healthy controls by flow cytometry...
March 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28277336/development-and-function-of-immune-cells-in-an-adolescent-patient-with-a-deficiency-in-the-interleukin-10-receptor
#12
Sharon Veenbergen, Marieke A van Leeuwen, Gertjan J J Driessen, Rogier Kersseboom, Lilian F de Ruiter, Rolien H C Raatgeep, Dicky J Lindenbergh-Kortleve, Ytje Simons-Oosterhuis, Katharina Biermann, Dicky J J Halley, Lissy de Ridder, Johanna C Escher, Janneke N Samsom
OBJECTIVE: Monogenic defects in the interleukin-10 (IL-10) pathway are extremely rare and cause infantile-onset inflammatory bowel disease (IBD)-like pathology. Understanding how immune responses are dysregulated in monogenic IBD-like diseases can provide valuable insight in "classical" IBD pathogenesis. Here, we studied long-term immune cell development and function in an adolescent IL-10 receptor (IL10RA)-deficient patient who presented in infancy with severe colitis and fistulizing perianal disease and is currently treated with immune suppressants...
March 8, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28274246/decreased-cytokine-production-by-mononuclear-cells-after-severe-gram-negative-infections-early-clinical-signs-and-association-with-final-outcome
#13
Nikolaos Antonakos, Thomas Tsaganos, Volker Oberle, Iraklis Tsangaris, Malvina Lada, Aikaterini Pistiki, Nikolaos Machairas, Maria Souli, Michael Bauer, Evangelos J Giamarellos-Bourboulis
BACKGROUND: Failure of circulating monocytes for adequate cytokine production is a trait of sepsis-induced immunosuppression; however, its duration and association with final outcome are poorly understood. METHODS: We conducted a substudy of a large randomised clinical trial. Peripheral blood mononuclear cells (PBMCs) were isolated within the first 24 h from the onset of systemic inflammatory response syndrome in 95 patients with microbiologically confirmed or clinically suspected gram-negative infections...
March 9, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28271685/the-expression-of-b7-h3-in-circulating-cd4-cd25high-t-cells-circulating-cd14-monocytes-and-plasma-during-hepatitis-b-virus-infection-progression
#14
Jun-Chi Xu, Ming Li, Yuan Ma, Cui-Lin Shi, Xiao-Yan Zhu, Hua-Feng Song, Hui Chen, Chuan-Wu Zhu, Ping Xu
BACKGROUND: B7-H3 is frequently upregulated in response to autoantigens and pathogens during host T cell immune responses. However, the role of B7-H3 which express in CD14+ monocytes and CD4+CD25high T cells had not been investigated. METHODS: Cytometry and ELISA were used in this study. RESULTS: The study showed that B7-H3 expression in CD14+ monocytes, CD4+CD25high T cells, and plasma was significantly increased in AHB, CHB, HBV-LC, and HBV-HCC group...
March 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28267633/sclerostin-stimulates-angiogenesis-in-human-endothelial-cells
#15
Angela Oranger, Giacomina Brunetti, Graziana Colaianni, Roberto Tamma, Claudia Carbone, Luciana Lippo, Giorgio Mori, Paolo Pignataro, Nunzio Cirulli, Roberta Zerlotin, Biagio Moretti, Angela Notarnicola, Domenico Ribatti, Maria Grano, Silvia Colucci
Sclerostin, negative regulator of bone formation, has been originally known as an osteocyte product. Recently, it has been also detected in hypertrophic chondrocytes, distinctive cells of avascular cartilage which is invaded by capillaries and then replaced by vascularized bone. Thus, we hypothesized that sclerostin, in addition to its role already known, may exert an angiogenic activity. We first proved that sclerostin increased the proliferation of human umbilical vein endothelial cells (HUVECs), and next, by using the chicken chorioallantoic membrane (CAM) in vivo assay, we demonstrated that it exerts an angiogenic activity similar to that of vascular endothelial growth factor (VEGF)...
March 3, 2017: Bone
https://www.readbyqxmd.com/read/28263922/citrulline-and-monocyte-derived-macrophage-reactivity-prior-to-conditioning-predict-acute-graft-verus-host-disease
#16
Thomas Hueso, Valérie Coiteux, Marie Joncquel Chevalier Curt, Julien Labreuche, Thierry Jouault, Ibrahim Yakoub-Agha, David Seguy
During conditioning, intestinal damage induces microbial translocation, which primes macrophage reactivity and leads to donor-derived T cell stimulation. Little is known about the role of intestinal health and macrophage reactivity prior to conditioning regarding the development of acute graft-versus-host disease (aGvHD) in patients undergoing allogeneic hematopoietic cell transplantation (allo-HCT). We assessed (i) citrulline, a surrogate marker of functional enterocyte mass and (ii) circulating monocyte-derived macrophage reactivity, before allo-HCT...
March 2, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28257515/new-evidence-for-the-therapeutic-potential-of-curcumin-to-treat-nonalcoholic-fatty-liver-disease-in-humans
#17
María Eugenia Inzaugarat, Elena De Matteo, Placida Baz, Diego Lucero, Cecilia Claudia García, Esteban Gonzalez Ballerga, Jorge Daruich, Juan Antonio Sorda, Miriam Ruth Wald, Alejandra Claudia Cherñavsky
INTRODUCTION: The immune system acts on different metabolic tissues that are implicated in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Leptin and linoleic acid have the ability to potentially affect immune cells, whereas curcumin is a known natural polyphenol with antioxidant and anti-inflammatory properties. AIMS: This study was designed to evaluate the pro-inflammatory and pro-oxidant effects of leptin and linoleic acid on immune cells from patients with NAFLD and to corroborate the modulatory effects of curcumin and its preventive properties against the progression of NAFLD using a high-fat diet (HFD)-induced NAFLD/nonalcoholic steatohepatitis mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/28251313/the-role-of-macrophages-in-hypertension-and-its-complications
#18
REVIEW
A Justin Rucker, Steven D Crowley
Circulating monocytes and tissue macrophages play complex roles in the pathogenesis of hypertension, a highly prevalent disease associated with catastrophic cardiovascular morbidity. In the vasculature and kidney, macrophage-derived reactive oxygen species (ROS) and inflammatory cytokines induce endothelial and epithelial dysfunction, respectively, resulting in vascular oxidative stress and impairment of sodium excretion. By contrast, VEGF-C-expressing macrophages in the skin can facilitate the removal of excess interstitial stores of sodium by stimulating lymphangiogenesis...
March 1, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28245863/epstein-barr-virus-lytic-infection-promotes-activation-of-toll-like-receptor-8-innate-immune-response-in-systemic-sclerosis-monocytes
#19
Antonella Farina, Giovanna Peruzzi, Valentina Lacconi, Stefania Lenna, Silvia Quarta, Edoardo Rosato, Anna Rita Vestri, Michael York, David H Dreyfus, Alberto Faggioni, Stefania Morrone, Maria Trojanowska, G Alessandra Farina
BACKGROUND: Monocytes/macrophages are activated in several autoimmune diseases, including systemic sclerosis (scleroderma; SSc), with increased expression of interferon (IFN)-regulatory genes and inflammatory cytokines, suggesting dysregulation of the innate immune response in autoimmunity. In this study, we investigated whether the lytic form of Epstein-Barr virus (EBV) infection (infectious EBV) is present in scleroderma monocytes and contributes to their activation in SSc. METHODS: Monocytes were isolated from peripheral blood mononuclear cells (PBMCs) depleted of the CD19+ cell fraction, using CD14/CD16 negative-depletion...
February 28, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28241864/ccl2-and-ccl5-driven-attraction-of-cd172a-monocytic-cells-during-an-equine-herpesvirus-type-1-ehv-1-infection-in-equine-nasal-mucosa-and-the-impact-of-two-migration-inhibitors-rosiglitazone-rsg-and-quinacrine-qc
#20
Jing Zhao, Katrien C K Poelaert, Jolien Van Cleemput, Hans J Nauwynck
Equine herpesvirus type 1 (EHV-1) causes respiratory disease, abortion and neurological disorders in horses. Besides epithelial cells, CD172a(+) monocytic cells become infected with EHV-1 in the respiratory mucosa and transport the virus from the apical side of the epithelium to the lamina propria en route to the lymph and blood circulation. Whether CD172a(+) monocytic cells are specifically recruited to the infection sites in order to pick up virus is unknown. In our study, equine nasal mucosa explants were inoculated with EHV-1 neurological strains 03P37 and 95P105 or the non-neurological strains 97P70 and 94P247 and the migration of monocytic cells was examined by immunofluorescence...
February 27, 2017: Veterinary Research
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