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Flow cytometry and exercise

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https://www.readbyqxmd.com/read/29774032/protein-o-glcnac-modification-increases-in-white-blood-cells-after-a-single-bout-of-physical-exercise
#1
Tamás Nagy, Emese Kátai, Viktória Fisi, Tamás Tibor Takács, Antal Stréda, István Wittmann, Attila Miseta
Background: Protein O-linked N -acetylglucosamine (O-GlcNAc) is a dynamic posttranslational modification influencing the function of many intracellular proteins. Recently it was revealed that O-GlcNAc regulation is modified under various stress states, including ischemia and oxidative stress. Aside from a few contradictory studies based on animal models, the effect of exercise on O-GlcNAc is unexplored. Purpose: To evaluate O-GlcNAc levels in white blood cells (WBC) of human volunteers following physical exercise...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29763678/acute-aerobic-exercise-induces-a-preferential-mobilisation-of-plasmacytoid-dendritic-cells-into-the-peripheral-blood-in-man
#2
Frankie F Brown, John P Campbell, Alex J Wadley, James P Fisher, Sarah Aldred, James E Turner
Dendritic cells (DCs) are important sentinel cells of the immune system responsible for presenting antigen to T cells. Exercise is known to cause an acute and transient increase in the frequency of DCs in the bloodstream in humans, yet there are contradictory findings in the literature regarding the phenotypic composition of DCs mobilised during exercise, which may have implications for immune regulation and health. Accordingly, we sought to investigate the composition of DC sub-populations mobilised in response to acute aerobic exercise...
May 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29662554/effect-of-%C3%AE-hydroxy-%C3%AE-methylbutyrate-on-mirna-expression-in-differentiating-equine-satellite-cells-exposed-to-hydrogen-peroxide
#3
Karolina A Chodkowska, Anna Ciecierska, Kinga Majchrzak, Piotr Ostaszewski, Tomasz Sadkowski
Background: Skeletal muscle injury activates satellite cells to initiate processes of proliferation, differentiation, and hypertrophy in order to regenerate muscle fibers. The number of microRNAs and their target genes are engaged in satellite cell activation. β-Hydroxy-β-methylbutyrate (HMB) is known to prevent exercise-induced muscle damage. The purpose of this study was to evaluate the effect of HMB on miRNA and relevant target gene expression in differentiating equine satellite cells exposed to H2 O2 ...
2018: Genes & Nutrition
https://www.readbyqxmd.com/read/29653347/development-and-validation-of-a-bioassay-to-evaluate-binding-of-adalimumab-to-cell-membrane-anchored-tnf%C3%AE-using-flow-cytometry-detection
#4
Rosa Camacho-Sandoval, Eréndira N Sosa-Grande, Edith González-González, Alejandra Tenorio-Calvo, Carlos A López-Morales, Marco Velasco-Velázquez, Lenin Pavón-Romero, Sonia Mayra Pérez-Tapia, Emilio Medina-Rivero
Physicochemical and structural properties of proteins used as active pharmaceutical ingredients of biopharmaceuticals are determinant to carry out their biological activity. In this regard, the assays intended to evaluate functionality of biopharmaceuticals provide confirmatory evidence that they contain the appropriate physicochemical properties and structural conformation. The validation of the methodologies used for the assessment of critical quality attributes of biopharmaceuticals is a key requirement for manufacturing under GMP environments...
March 30, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29648517/preliminary-evidence-of-reductive-stress-in-human-cytotoxic-t-cells-following-exercise
#5
Alex James Wadley, Adrian Holliday, Rhys G Morgan, Kate J Heesom, Sarah Aldred, Derek M Peters, Allain A Bueno, Steven J Coles
This study investigated immunophenotypic differences in intracellular thiol redox state of peripheral blood mononuclear cells (PBMCs) isolated from trained (TR, n=9, mean {plus minus} SD: age 28 {plus minus} 5 years; BMI 23.2 {plus minus} 2.6 kg·m2 ; VO2max 56.9 {plus minus} 6.1 ml·kg-1 ·min-1 ) and recreationally active (RA, n=11, mean {plus minus} SD: age 27 {plus minus} 6 years; BMI 24.2 {plus minus} 3.7 kg·m2 ; VO2max 45.1 {plus minus} 6.4 ml·kg-1 ·min-1 ) participants before and after a maximal aerobic exercise tolerance test...
April 12, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29648514/beneficial-impacts-of-regular-exercise-on-platelet-function-in-sedentary-older-adults-evidence-from-a-randomized-6-month-walking-trial
#6
Andrew Haynes, Matthew D Linden, Elisa Robey, Louise H Naylor, Philip N Ainslie, Kay L Cox, Nicola T Lautenschlager, Daniel J Green
Platelet activation, including the formation of monocyte platelet aggregates (MPAs), contributes to atherosclerosis, thrombus formation and acute coronary syndromes. Regular participation in exercise can lower cardiovascular risk, but little is known regarding the impact of exercise training on platelet function. We investigated the effect of 6 months of walking exercise on platelet function in sedentary older adults without significant cardiovascular disease. Twenty-seven participants were randomly allocated to 6 months of either: no-exercise (n=13) or 3 x 50 mins/wk of supervised centre-based walking (n=14)...
April 12, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29597198/exercise-induced-change-in-plasma-il-12p70-is-linked-to-migraine-prevention-and-anxiolytic-effects-in-treatment-na%C3%A3-ve-women-a-randomized-controlled-trial
#7
Arão Belitardo Oliveira, Andre Luis Lacerda Bachi, Reinaldo Teixeira Ribeiro, Marco Túlio Mello, Mauro Vaisberg, Mario Fernando Prieto Peres
OBJECTIVE: To conduct a randomized controlled trial to evaluate the effect of a 12-week aerobic exercise program for migraine prevention, plasma cytokines concentrations (TNF-α, interleukin [IL]-1β, IL-6, IL-8, IL-10, and IL-12p70), and anxiety in women with migraine. METHODS: Women with episodic migraine (ICHD-II), aged between 20 and 50 years, who had never taken any prophylactic medication, and were physically inactive in the past 12 months were recruited from the university's hospital and a tertiary headache clinic between March 2012 and March 2015...
March 29, 2018: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29518708/changes-in-plasma-5-ht-levels-and-equine-leukocyte-sert-expression-in-response-to-treadmill-exercise
#8
Angela D'Ascola, Giuseppe Bruschetta, Gabriella Zanghì, Salvatore Campo, Pietro Medica, Stefania Campana, Guido Ferlazzo, Bernhard F Gibbs, Alida Maria Ferlazzo
Serotonin (5-HT) is a neurohormone transported from plasma into platelets and leukocytes by a specific transporter (SERT). While it is known that the brain 5-HT system is modulated by physical exercise, the peripheral serotoninergic response to exercise is not yet fully elucidated. In particular, this study aimed to evaluate changes in plasma 5-HT levels and equine leukocyte SERT expression in response to treadmill exercise in untrained horses. Analyses were carried out pre- and post-treadmill exercise. 5-HT plasma levels were analysed by HPLC...
February 27, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29467598/an-attempt-to-induce-an-immunomodulatory-effect-in-rowers-with-spirulina-extract
#9
RANDOMIZED CONTROLLED TRIAL
Artur Juszkiewicz, Piotr Basta, Elżbieta Petriczko, Bogusław Machaliński, Jerzy Trzeciak, Karolina Łuczkowska, Anna Skarpańska-Stejnborn
Background: The aim of this study was to analyze the response of selected components of the immune system in rowers to maximal physical exercise, and to verify if this response can be modulated by supplementation with spirulina (cyanobacterium Spirulina platensis ) . Method: The double-blind study included 19 members of the Polish Rowing Team. The subjects were randomly assigned to the supplemented group ( n  = 10), receiving 1500 mg of spirulina extract for 6 weeks, or to the placebo group ( n  = 9)...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29461967/effects-of-lifelong-training-on-senescence-and-mobilization-of-t-lymphocytes-in-response-to-acute-exercise
#10
Luciele G Minuzzi, Luís Rama, Matheus Uba Chupel, Fátima Rosado, João Valente Dos Santos, Richard Simpson, António Martinho, Artur Paiva, Ana M Teixeira
BACKGROUND/PURPOSE: Ageing has profound impact on the immune system, mainly on T-cells. However, it has been suggested that chronic exercise may delay immunosenescence. Master athletes represent an interesting sub-demographic group to test this theory since they maintain a high training frequency and load throughout life. The purpose of this study was to evaluate the effects of lifelong training on the senescence and mobilization of T lymphocytes in response to acute exercise. MATERIAL AND METHODS: Nineteen athletes who regularly participated in training and competitions for more than 20 years throughout their lives and a control group of 10 healthy individuals participated in this study...
2018: Exercise Immunology Review
https://www.readbyqxmd.com/read/29453746/effect-of-aerobic-exercise-on-treg-and-th17-of-rats-with-ischemic-cardiomyopathy
#11
Zhisong Chen, Wenwen Yan, Yu Mao, Yi Ni, Lin Zhou, Haoming Song, Wenjun Xu, Leming Wang, Yuqin Shen
Immune activation and inflammation participate in the progression of chronic heart failure (CHF). Th17 cells and CD4+CD25+ regulatory T (Treg) cells both come from naive Th cells and share reciprocal development pathways but exhibit opposite effects. We hypothesized that the Th17/Treg balance was impaired in patients with CHF, and exercise can improve it. Rats with ischemic cardiomyopathy were prepared by ligaturing the left anterior descending branch of the left coronary artery. Rats in training group were trained with treadmill; Th17 cells increased significantly while Treg cells significantly decreased in s by flow cytometry, and the peripheral blood level of IL-6, IL-17, and TNF-α was obviously elevated by ELISA assay...
February 16, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29445271/immune-cell-response-to-strenuous-resistive-breathing-comparison-with-whole-body-exercise-and-the-effects-of-antioxidants
#12
Andreas Asimakos, Dimitrios Toumpanakis, Maria-Helena Karatza, Spyridoula Vasileiou, Paraskevi Katsaounou, Zafeiria Mastora, Theodoros Vassilakopoulos
Background/hypothesis: Whole body exercise (WBE) changes lymphocyte subset percentages in peripheral blood. Resistive breathing, a hallmark of diseases of airway obstruction, is a form of exercise for the inspiratory muscles. Strenuous muscle contractions induce oxidative stress that may mediate immune alterations following exercise. We hypothesized that inspiratory resistive breathing (IRB) alters peripheral blood lymphocyte subsets and that oxidative stress mediates lymphocyte subpopulation alterations following both WBE and IRB...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29356101/eryptosis-and-hemorheological-responses-to-maximal-exercise-in-athletes-comparison-between-running-and-cycling
#13
E Nader, N Guillot, L Lavorel, I Hancco, R Fort, E Stauffer, C Renoux, P Joly, M Germain, P Connes
We compared the effects of cycling and running exercise on hemorheological and hematological properties, as well as eryptosis markers. Seven endurance-trained subjects randomly performed a progressive and maximal exercise test on a cycle ergometer and a treadmill. Blood was sampled at rest and at the end of the exercise to analyze hematological and blood rheological parameters including hematocrit (Hct), red blood cell (RBC) deformability, aggregation, and blood viscosity. Hemoglobin saturation (SpO2), blood lactate, and glucose levels were also monitored...
January 21, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29313111/long-term-swimming-training-modifies-acute-immune-cell-response-to-a-high-intensity-session
#14
José P Morgado, Cristina P Monteiro, Catarina N Matias, Joana F Reis, Júlia Teles, Maria José Laires, Francisco Alves
PURPOSE: Long-term training influence on athletes' immune cell response to acute exercise has been poorly studied, despite the complexity of both chronic and acute adaptations induced by training. The purpose of the study is to study the influence of a 4-month swimming training cycle on the immune cell response to a high-intensity training session, during 24 h of recovery, considering sex, maturity, and age group. METHODS: Forty-three swimmers (16 females, 14.4 ± 1...
March 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29289515/conditioned-medium-from-contracting-skeletal-muscle-cells-reverses-insulin-resistance-and-dysfunction-of-endothelial-cells
#15
Yihe Zhao, Nana Li, Zhu Li, Da Zhang, Liming Chen, Zhi Yao, Wenyan Niu
OBJECTIVE: Obese adipose tissue has been characterized with chronic inflammation associated with elevated secretion of inflammatory cytokines and declined secretion of anti-inflammatory cytokines which can impair endothelial function in an endocrine manner. Adipose tissue hypoxia plays a role in the changes of cytokines. Physical exercise / muscle contraction may help preventing cardiovascular disease through improving insulin resistance and endothelium function. However the mechanism is unclear...
December 28, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29167123/lower-resting-and-exercise-induced-circulating-angiogenic-progenitors-and-angiogenic-t-cells-in-older-men
#16
Mark D Ross, Eva M Malone, Richard Simpson, Islay Cranston, Lesley Ingram, Graham P Wright, George Chambers, Geraint Florida-James
Aging is associated with a dysfunctional endothelial phenotype as well as reduced angiogenic capabilities. Exercise exerts beneficial effects on the cardiovascular system, possibly by increasing/maintaining the number and/or function of circulating angiogenic cells (CACs), which are known to decline with age. However, the relationship between cardiorespiratory fitness (CRF) and age-related changes in the frequency of CACs, as well as the exercise-induced responsiveness of CACs in older individuals, has not yet been determined...
March 1, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29112629/maximal-exercise-alters-the-inflammatory-phenotype-and-response-of-mononuclear-cells
#17
Aaron L Slusher, Tiffany M Zúñiga, Edmund O Acevedo
PURPOSE: Monocytes express the CD14 receptor that facilitates lipopolysaccharide (LPS) ligation to toll-like receptor 4 (TLR4) to elicit production of interleukin (IL)-6, IL-10, and tumor necrosis factor alpha (TNF-α). However, pro-inflammatory conditions, such as strenuous exercise, increase the percentage of monocytes expressing CD16, a receptor that enhances LPS stimulated TNF-α production. Therefore, we examined whether maximal treadmill exercise would alter the inflammatory phenotype of classical (CD14/CD16) and pro-inflammatory monocytes (intermediate [CD14/CD16] and non-classical [CD14/CD16]), evidenced by changes in TLR4, CD14, and CD16 receptor expression, and their inflammatory response to ex vivo LPS stimulation...
November 6, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29092860/exercise-training-reverses-inflammation-and-muscle-wasting-after-tobacco-smoke-exposure
#18
Karsten Krüger, Michael Seimetz, Robert Ringseis, Jochen Wilhelm, Alexandra Pichl, Aline Couturier, Klaus Eder, Norbert Weissmann, Frank C Mooren
Long-term cigarette smoking induces inflammatory processes in the pulmonary system that are suggested to "spill over" into systemic inflammation. Regular exercise has been shown to have anti-inflammatory properties. The aim of the study was to investigate the effects of therapeutic exercise on inflammation and muscle wasting in smoke-exposed mice. C57BL/6J mice ( n = 30) were separated into three groups to receive either 1) no specific treatment (control group), 2) 8-mo exposure to cigarette smoke [smoke-exposed (SE) group], or 3) 8 mo of cigarette smoke combined with exercise training during the last 2 mo (SEex group)...
March 1, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29017969/vigorous-exercise-mobilizes-cd34-hematopoietic-stem-cells-to-peripheral-blood-via-the-%C3%AE-2-adrenergic-receptor
#19
Nadia H Agha, Forrest L Baker, Hawley E Kunz, Rachel Graff, Rod Azadan, Chad Dolan, Mitzi S Laughlin, Chitra Hosing, Melissa M Markofski, Richard A Bond, Catherine M Bollard, Richard J Simpson
Acute dynamic exercise mobilizes CD34+ hematopoietic stem cells (HSCs) to the bloodstream, potentially serving as an economical adjuvant to boost the collection of HSCs from stem cell transplant donors. The mechanisms responsible for HSC mobilization with exercise are unknown but are likely due to hemodynamic perturbations, endogenous granulocyte-colony stimulating factor (G-CSF), and/or β2 -adrenergic receptor (β2 -AR) signaling. We characterized the temporal response of HSC mobilization and plasma G-CSF following exercise, and determined the impact of in vivo β-AR blockade on the exercise-induced mobilization of HSCs...
February 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28888922/microrna-20a-participates-in-the-aerobic-exercise-based-prevention-of-coronary-artery-disease-by-targeting-pten
#20
Dongwei Wang, Yi Wang, Juan Ma, Wenping Wang, Bingbing Sun, Tengfei Zheng, Ming Wei, Yangli Sun
BACKGROUND: Exercise can reduce the coronary artery disease (CAD) incidence. MiRNA-20a has been reported to distinctly expressed after sustain physical activity. However, its expression and regulation pattern in CAD model with or without exercise has not been reported. OBJECTIVE: In present study, we aim to investigate regulatory mechanism of miR-20a in exercise-associated reduced-CAD incidence and miR-20a-dependent signaling pathways. METHODS: Eight weeks old male ApoE/LDLR double knock out mice were recruited for this study...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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