Martin Klein

ORCID: 0000-0002-1027-0923
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About
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Research Areas
  • Inflammatory Myopathies and Dermatomyositis
  • Fibromyalgia and Chronic Fatigue Syndrome Research
  • Muscle Physiology and Disorders
  • Rheumatoid Arthritis Research and Therapies
  • Immunodeficiency and Autoimmune Disorders
  • Muscle and Compartmental Disorders
  • S100 Proteins and Annexins
  • Eosinophilic Disorders and Syndromes
  • Biomarkers in Disease Mechanisms
  • Clusterin in disease pathology
  • Systemic Sclerosis and Related Diseases
  • Parkinson's Disease and Spinal Disorders
  • Gout, Hyperuricemia, Uric Acid
  • Nuclear Structure and Function
  • Exercise and Physiological Responses
  • Heat shock proteins research
  • Musculoskeletal Disorders and Rehabilitation
  • Cell Adhesion Molecules Research
  • Dermatological and Skeletal Disorders
  • Genetic Neurodegenerative Diseases
  • Peripheral Neuropathies and Disorders
  • Metabolism and Genetic Disorders
  • Receptor Mechanisms and Signaling
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Neurogenetic and Muscular Disorders Research

Institute of Rheumatology
2016-2025

Charles University
2015-2025

Shanxi Medical University
2021

Second Hospital of Shanxi Medical University
2021

Center for Rheumatology
2016-2018

Swiss Integrative Center for Human Health
2012

Czech Academy of Sciences, Institute of Physiology
2008

Groote Schuur Hospital
1992

University of Cape Town
1992

Objectives. Immune-mediated necrotizing myopathy (IMNM) is characterized by the predominant presence of necrotic muscle fibres in biopsy and variable response to immunosuppressive treatment. The aims this study were analyse temporal trend IMNM incidence our centre over past 10 years explore role statins as possible causative agents. Methods. A retrospective evaluation results, clinical laboratory data, including antibody associations all patients with idiopathic inflammatory newly diagnosed...

10.1093/rheumatology/kev229 article EN Lara D. Veeken 2015-06-24

<h3>Objective</h3> Fibrin deposits are characteristic of the synovial tissues in rheumatoid arthritis (RA). Once citrullinated, fibrin becomes an autoantigen and is thought to contribute this way perpetuate disease. Our study aimed analyse responses RA fibroblasts (RASF) native citrullinated fibrin. <h3>Methods</h3> The transcriptome induced by RASF was approached with whole-genome-based gene expression arrays. upregulation selected pro-inflammatory genes confirmed additional primary cell...

10.1136/annrheumdis-2012-201906 article EN Annals of the Rheumatic Diseases 2012-12-12

In order to critically define the apparently widespread condition 'sports anemia', red cell indices and iron Status of male distance runners triathletes, female ballet dancers were compared non-exercising controls both sexes. The mean hemoglobin (Hb) levels all groups within normal ranges there was no difference between athletic control each sex. serum ferritin (SF) concentration (79.8 ug/1) significantly lower than that triathletes (123.5 (138.3 ug/1). Iron deficiency (SF < 12 ug/1,%...

10.1055/s-2007-1021278 article EN International Journal of Sports Medicine 1992-05-01
Ryan Hum James B Lilleker Janine A. Lamb Alexander Oldroyd Guochun Wang and 95 more Lucy R Wedderburn Louise Pyndt Diederichsen Jens Schmidt Maria Giovanna Danieli Paula Oakley Zoltán Griger Thuy Nguyen Thi Phuong Chanakya Kodishala Mónica Vázquez-Del Mercado Helena Andersson Boél De Paepe Jan De Bleecker Britta Maurer Liza McCann Nicolò Pipitone Neil McHugh Robert P New William Ollier Niels Steen Krogh Jiří Vencovský Ingrid E. Lundberg Hector Chinoy Sophie D’hose Xin Lu Xiaolan Tian H. Mann Olga Kryštůfková Lenka Pleštilová Martin Klein Tereza Barochová Kateřina Kubínová Chiara Gelardi Alberto Paladini Mario Andrea Piga Luis J. Jara Miguel Ángel Saavedra Claudia Cruz‐Reyes Olga Vera‐Lastra Lilia Andrade-Ortega Gabriel Medrano-Ramírez Minoru Satoh Mario Salazar-Páramo Efraín Chavarría-Ávila Andrea Aguilar-Vázquez Jesús-Aureliano Robles-De Anda Marcelo H. Petri Øyvind Molberg Maryam Dastmalchi Antonella Notarnicola Karina Gheorghe Johan Rönnelid Maria Liden Balsam Hanna Awat Jalal Helena Hellström Jehns Christian Martineus Nguyễn Thị Ngọc Lan Leonid Padyukov Paul New Hazel Platt Simon Rothwell Yasmeen Ahmed Raymond Armstrong Robert Bernstein Carol M. Black Simon Bowman Ian N Bruce Robin Butler John Carty Chandra Chattopadhyay E G Chelliah Fiona Clarke P. T. Dawes Christopher P. Denton Joseph Devlin Christopher Edwards Paul Emery J. L. A. Fordham Alexander Fraser Hill Gaston Patrick Gordon Bridget Griffiths Harsha Gunawardena Frances Hall Michael G. Hanna Beverley Harrison Elaine M. Hay David Hilton‐Jones Lesley Horden John D. Isaacs David Isenberg Adrian Jones Sanjeet Kamath Thomas J. Kennedy George D. Kitas

Abstract Objectives To compare clinical characteristics, including the frequency of cutaneous, extramuscular manifestations and malignancy, between adults with anti-synthetase syndrome (ASyS) DM. Methods Using data regarding from MYONET registry, a cohort DM patients anti-Mi2/-TIF1γ/-NXP2/-SAE/-MDA5 autoantibodies, ASyS anti-tRNA synthetase autoantibodies (anti-Jo1/-PL7/-PL12/-OJ/-EJ/-Zo/-KS) were identified. Patients sine dermatitis or discordant dual autoantibody specificities excluded....

10.1093/rheumatology/kead481 article EN cc-by Lara D. Veeken 2023-09-11

Myositis is a heterogeneous group of autoimmune diseases, with different pathogenic mechanisms contributing to the subsets disease. The aim this study was test whether autoantibody profile in patients myositis associated type I interferon (IFN) signature, as systemic lupus erythematous (SLE). Patients were prospectively enrolled and compared healthy controls SLE. Autoantibody status analysed using an immunoassay system immunoprecipitation. Type IFN activity whole blood determined direct gene...

10.1111/sji.12449 article EN Scandinavian Journal of Immunology 2016-05-13

Calprotectin may be a sensitive biomarker of rheumatoid arthritis (RA) disease activity.In the current study, we investigated whether calprotectin is better than CRP for predicting clinical activity and ultrasound parameters in patients with RA.A total 160 RA underwent (swollen joint count-SJC, tender count-TJC, Disease Activity Score-DAS28, Clinical Index-CDAI, simplified Index-SDAI) (German US7) examination. laboratory measures were correlated findings using Spearman´s correlation...

10.1371/journal.pone.0183420 article EN public-domain PLoS ONE 2017-08-23

Abstract Objectives Objective of this work was to examine myomiR levels in plasma, skeletal muscle, and muscle cells patients with idiopathic inflammatory myopathy (IIM), their interrelations the disease-related clinical phenotypes effects disease-modifying 6-month training-intervention. Methods Samples vastus lateralis (n = 12/13) plasma 20/21) were obtained from IIM healthy controls, respectively. Muscle before after a training-intervention 7 patients. MyomiRs miR-1,-206,-133a,-133b...

10.1093/rheumatology/keae704 article EN Lara D. Veeken 2025-01-07

Objective. To determine the prevalence, distribution, and clinical manifestations of arthritis in a cohort patients with idiopathic inflammatory myopathies (IIM). Associations autoantibody status HLA genetic background were also explored. Methods. Consecutive IIM treated single center included this cross-sectional study (n = 106). History arthritis, 68-joint 66-joint tender swollen joint index, features IIM, profiles obtained by examination, personal interview, review patient records....

10.3899/jrheum.131223 article EN The Journal of Rheumatology 2014-05-01

Low levels of vitamin D have been associated with several autoimmune diseases. A growing body evidence supports the association skeletal muscle damage, regeneration, and energy lipid metabolism. The aim was to analyse its receptor (VDR) in tissue patients idiopathic inflammatory myopathies (IIM) relate them clinical parameters Forty-six IIM 67 healthy controls (HC) were included study. 27 participated a 24-week exercise intervention. Muscle biopsies obtained from 7 before/after training, 13...

10.1186/s13075-025-03516-9 article EN cc-by-nc-nd Arthritis Research & Therapy 2025-03-04

The purpose of this study was to evaluate and compare the serum levels local expression resistin in patients with idiopathic inflammatory myopathies controls, determine relationship between levels, inflammation disease activity. Serum were determined 42 27 healthy controls. association among inflammation, global activity muscle strength examined. tissues from controls evaluated. Gene protein release resistin-stimulated mononuclear cells assessed. In myopathies, significantly higher than...

10.1186/ar3836 article EN cc-by Arthritis Research & Therapy 2012-01-01

Abstract Background The structural and functional changes of the skeletal muscles in idiopathic inflammatory myopathies (IIM) caused by inflammation immune can be severely disabling. objective this study was to assess effect a 24-week program combining supervised training activities daily living (ADL), resistance, stability with home exercise for improving muscle function, compared home-based representing regular outpatient care. Methods Fifty-seven patients IIM were consecutively...

10.1186/s13075-021-02544-5 article EN cc-by Arthritis Research & Therapy 2021-06-21

Restoring normal physical functioning is a major therapeutic aim in the management of rheumatoid arthritis (RA). It unknown, whether extent synovial inflammation quantified by musculoskeletal ultrasound (US) can predict current or future capacity for functioning. To answer this question we investigated longitudinal relationship between function assessed health assessment questionnaire (HAQ) and German 7-joint score (US7S) prospective cohort patients with RA. Patients RA (n = 185 (46 incident...

10.1186/s13075-016-1208-6 article EN cc-by Arthritis Research & Therapy 2017-01-13

In patients with idiopathic inflammatory myopathies (IIM), autoantibodies are associated specific clinical phenotypes suggesting a pathogenic role of adaptive immunity. We explored if autoantibody profiles HLA genetic variants and manifestations in IIM.

10.1016/j.ebiom.2023.104804 article EN cc-by EBioMedicine 2023-09-26

Objective Clinical remission in some patients with rheumatoid arthritis (RA) may be associated ongoing synovial inflammation that is not always detectable on clinical examination or reflected by laboratory tests but can visualized musculoskeletal ultrasound. The goal of our study was to determine the levels serum calprotectin, a major leukocyte protein, RA and investigate ability calprotectin distinguish ultrasound-defined from those residual ultrasound subclinical inflammation. Methods...

10.1371/journal.pone.0165498 article EN cc-by PLoS ONE 2016-11-10

The aim of this study was to investigate the systemic and skeletal muscle levels atrophy-associated myokines in patients with idiopathic inflammatory myopathies (IIM) their association clinical characteristics myositis.A total 94 IIM 162 healthy controls were recruited. Of those, 20 28 underwent a biopsy. Circulating concentrations myostatin, follistatin, activin A TGF-β1 assessed by ELISA. expression associated genes involved myostatin signalling pathway tissue determined real-time PCR.We...

10.1093/rheumatology/kez651 article EN Lara D. Veeken 2019-12-06
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