51
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Affiliation(s)
- Milène Catoire
- Nutrition, Metabolism and Genomics Group, Division of Human NutritionWageningen UniversityWageningenThe Netherlands
| | - Sander Kersten
- Nutrition, Metabolism and Genomics Group, Division of Human NutritionWageningen UniversityWageningenThe Netherlands
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52
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Dias RG, Silva MSM, Duarte NE, Bolani W, Alves CR, Junior JRL, da Silva JL, de Oliveira PA, Alves GB, de Oliveira EM, Rocha CS, Marsiglia JDC, Negrao CE, Krieger EM, Krieger JE, Pereira AC. PBMCs express a transcriptome signature predictor of oxygen uptake responsiveness to endurance exercise training in men. Physiol Genomics 2014; 47:13-23. [PMID: 25465030 DOI: 10.1152/physiolgenomics.00072.2014] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Peripheral blood cells are an accessible environment in which to visualize exercise-induced alterations in global gene expression patterns. We aimed to identify a peripheral blood mononuclear cell (PBMC) signature represented by alterations in gene expression, in response to a standardized endurance exercise training protocol. In addition, we searched for molecular classifiers of the variability in oxygen uptake (V̇o2). Healthy untrained policemen recruits (n = 13, 25 ± 3 yr) were selected. Peak V̇o2 (measured by cardiopulmonary exercise testing) and total RNA from PBMCs were obtained before and after 18 wk of running endurance training (3 times/wk, 60 min). Total RNA was used for whole genome expression analysis using Affymetrix GeneChip Human Gene 1.0 ST. Data were normalized by the robust multiarray average algorithm. Principal component analysis was used to perform correlations between baseline gene expression and V̇o2peak. A set of 211 transcripts was differentially expressed (ANOVA, P < 0.05 and fold change > 1.3). Functional enrichment analysis revealed that transcripts were mainly related to immune function, cell cycle processes, development, and growth. Baseline expression of 98 and 53 transcripts was associated with the absolute and relative V̇o2peak response, respectively, with a strong correlation (r > 0.75, P < 0.01), and this panel was able to classify the 13 individuals according to their potential to improve oxygen uptake. A subset of 10 transcripts represented these signatures to a similar extent. PBMCs reveal a transcriptional signature responsive to endurance training. Additionally, a baseline transcriptional signature was associated with changes in V̇o2peak. Results might illustrate the possibility of obtaining molecular classifiers of endurance capacity changes through a minimally invasive blood sampling procedure.
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Affiliation(s)
- Rodrigo Gonçalves Dias
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Michelle Sabrina Moreira Silva
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Nubia Esteban Duarte
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Wladimir Bolani
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Cleber Renê Alves
- School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| | - José Ribeiro Lemos Junior
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and São Paulo State Police Department, São Paulo, Brazil
| | - Jeferson Luis da Silva
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Patrícia Alves de Oliveira
- Unit of Cardiac Rehabilitation and Exercise Physiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| | - Guilherme Barreto Alves
- Unit of Cardiac Rehabilitation and Exercise Physiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil
| | | | | | - Julia Daher Carneiro Marsiglia
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Carlos Eduardo Negrao
- Unit of Cardiac Rehabilitation and Exercise Physiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| | - Eduardo Moacyr Krieger
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - José Eduardo Krieger
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
| | - Alexandre Costa Pereira
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor) University of São Paulo Medical School, São Paulo, Brazil; and
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53
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Stelzer I, Kröpfl JM, Fuchs R, Pekovits K, Mangge H, Raggam RB, Gruber HJ, Prüller F, Hofmann P, Truschnig-Wilders M, Obermayer-Pietsch B, Haushofer AC, Kessler HH, Mächler P. Ultra-endurance exercise induces stress and inflammation and affects circulating hematopoietic progenitor cell function. Scand J Med Sci Sports 2014; 25:e442-50. [PMID: 25438993 DOI: 10.1111/sms.12347] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2014] [Indexed: 01/18/2023]
Abstract
Although amateur sports have become increasingly competitive within recent decades, there are as yet few studies on the possible health risks for athletes. This study aims to determine the impact of ultra-endurance exercise-induced stress on the number and function of circulating hematopoietic progenitor cells (CPCs) and hematological, inflammatory, clinical, metabolic, and stress parameters in moderately trained amateur athletes. Following ultra-endurance exercise, there were significant increases in leukocytes, platelets, interleukin-6, fibrinogen, tissue enzymes, blood lactate, serum cortisol, and matrix metalloproteinase-9. Ultra-endurance exercise did not influence the number of CPCs but resulted in a highly significant decline of CPC functionality after the competition. Furthermore, Epstein-Barr virus was seen to be reactivated in one of seven athletes. The link between exercise-induced stress and decline of CPC functionality is supported by a negative correlation between cortisol and CPC function. We conclude that ultra-endurance exercise induces metabolic stress and an inflammatory response that affects not only mature hematopoietic cells but also the function of the immature hematopoietic stem and progenitor cell fraction, which make up the immune system and provide for regeneration.
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Affiliation(s)
- I Stelzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - J M Kröpfl
- Institute of Human Movement Sciences and Sport, Exercise Physiology Lab, ETH Zurich, Zurich, Switzerland.,Institute of Biophysics, Medical University of Graz, Graz, Austria
| | - R Fuchs
- Institute of Pathophysiology and Immunology, Medical University of Graz, Graz, Austria
| | - K Pekovits
- Department of Ophthalmology, Medical University of Graz, Graz, Austria
| | - H Mangge
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.,BioTechMed-Graz, Graz, Austria
| | - R B Raggam
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - H-J Gruber
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - F Prüller
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - P Hofmann
- Institute of Sports Science, Karl-Franzens-University of Graz, Graz, Austria
| | - M Truschnig-Wilders
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - B Obermayer-Pietsch
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - A C Haushofer
- Institute of Medical and Chemical Laboratory Diagnostics Wels-Grieskirchen, Wels-Grieskirchen, Austria
| | - H H Kessler
- Research Unit Molecular Diagnostics, IHMEM, Medical University of Graz, Graz, Austria
| | - P Mächler
- Center for Cardiac Rehabilitation, SKA-PVA St. Radegund, Graz, Austria
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54
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Gold JE, Mohamed FB, Ali S, Barbe MF. Serum and MRI biomarkers in mobile device texting: a pilot study. HUMAN FACTORS 2014; 56:864-872. [PMID: 25141594 DOI: 10.1177/0018720813507953] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE We aimed to determine if serum biochemical and MRI biomarkers differed between high volume (> or =230 texts sent/day; n = 5) and low volume (< or =25 texts sent/day; n = 5) texters. A secondary aim was to ascertain what correlations between the biochemical and imaging biomarkers could tell us about the pathophysiology of early onset tendinopathies. BACKGROUND Text messaging has become widespread, particularly among college-aged young adults. There is concern that high rates of texting may result in musculoskeletal disorders, including tendinopathies. Pathophysiology of tendinopathies is largely unknown. METHOD Ten females with a mean age of 20 were recruited. We examined serum for 20 biomarkers of inflammation, tissue degeneration, and repair. We used conventional MRI and MRI mean intratendinous signal intensity (MISI) to assess thumb tendons. Correlations between MISI and serum biomarkers were also examined. RESULTS Three high volume texters had MRI tendinopathy findings as did one low volume texter. Increased serum TNF-RI was found in high volume texters compared to low volume texters, as were nonsignificant increases in MISI in two thumb tendons. Serum TNF-RI and TNF-alpha correlated with MISI in these tendons, as did ILI-RI. CONCLUSION These results suggest that early onset tendinopathy with concurrent inflammation may be occurring in prolific texters. Further studies with larger sample sizes are needed for confirmation. Application: High volume texting may be a risk factor for thumb tendinopathy in later years. Multidisciplinary research using biochemical and imaging biomarkers may be used to gain insight into pathophysiological processes in musculoskeletal disorders.
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55
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Mackey AL, Karlsen A, Couppé C, Mikkelsen UR, Nielsen RH, Magnusson SP, Kjaer M. Differential satellite cell density of type I and II fibres with lifelong endurance running in old men. Acta Physiol (Oxf) 2014; 210:612-27. [PMID: 24219628 DOI: 10.1111/apha.12195] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 09/23/2013] [Accepted: 11/08/2013] [Indexed: 12/13/2022]
Abstract
AIM To investigate the influence of lifelong endurance running on the satellite cell pool of type I and type II fibres in healthy human skeletal muscle. METHODS Muscle biopsies were collected from 15 healthy old trained men (O-Tr) who had been running 43 ± 16 (mean ± SD) kilometres a week for 28 ± 9 years. Twelve age-matched untrained men (O-Un) and a group of young trained and young untrained men were recruited for comparison. Frozen sections were immunohistochemically stained for Pax7, type I myosin and laminin, from which fibre area, the number of satellite cells, and the relationship between these variables were determined. RESULTS In O-Un and O-Tr, type II fibres were smaller and contained fewer satellite cells than type I fibres. However, when expressed relative to fibre area, the difference in satellite cell content between fibre types was eliminated in O-Tr, but not O-Un. A strong positive relationship between fibre size and satellite cell content was detected in trained individuals. In line with a history of myofibre repair, a greater number of fibres with centrally located myonuclei were detected in O-Tr. CONCLUSION Lifelong endurance training (i) does not deplete the satellite cell pool and (ii) is associated with a similar density of satellite cells in type I and II fibres despite a failure to preserve the equal fibre type distribution of satellite cells observed in young individuals. Taken together, these data reveal a differential regulation of satellite cell content between fibre types, in young and old healthy men with dramatically different training histories.
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Affiliation(s)
- A. L. Mackey
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - A. Karlsen
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - C. Couppé
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - U. R. Mikkelsen
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - R. H. Nielsen
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - S. P. Magnusson
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - M. Kjaer
- Department of Orthopaedic Surgery M; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital; Copenhagen Denmark
- Center for Healthy Aging; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
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