Michel Simon

ORCID: 0000-0003-3655-6329
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About
Contact & Profiles
Research Areas
  • Dermatology and Skin Diseases
  • Skin and Cellular Biology Research
  • Allergic Rhinitis and Sensitization
  • Toxin Mechanisms and Immunotoxins
  • Advancements in Transdermal Drug Delivery
  • Food Allergy and Anaphylaxis Research
  • Contact Dermatitis and Allergies
  • Cell Adhesion Molecules Research
  • Multiculturalism, Politics, Migration, Gender
  • Hair Growth and Disorders
  • NF-κB Signaling Pathways
  • Cutaneous lymphoproliferative disorders research
  • Monoclonal and Polyclonal Antibodies Research
  • Healthcare Systems and Public Health
  • Nail Diseases and Treatments
  • French Urban and Social Studies
  • Transgenic Plants and Applications
  • Autoimmune Bullous Skin Diseases
  • RNA regulation and disease
  • Sphingolipid Metabolism and Signaling
  • RNA Interference and Gene Delivery
  • Skin Protection and Aging
  • Plant Reproductive Biology
  • Lipid Membrane Structure and Behavior
  • Plasma Applications and Diagnostics

Centre National de la Recherche Scientifique
2012-2025

Université de Toulouse
2015-2025

Université Toulouse III - Paul Sabatier
2015-2025

Inserm
2016-2025

Université de Lorraine
2024

Interdisciplinarité en Santé Publique Interventions et Instruments de mesure complexes – Région Est
2024

John Wiley & Sons (United States)
2022-2023

Institut Toulousain des Maladies Infectieuses et Inflammatoires
2021-2022

Hôpital Purpan
1985-2019

Laboratoire de Chimie Physique - Matière et Rayonnement
2019

Antifilaggrin autoantibodies (AFA) are a population of IgG associated to rheumatoid arthritis (RA), which includes the so-called "antikeratin" Abs and antiperinuclear factor. AFA most specific serological markers RA. We previously showed that they recognize human epidermal filaggrin other profilaggrin-related proteins various epithelial tissues. Here, we report further characterization protein Ags epitopes targeted by AFA. All exhibit numerous neutral/ acidic isoelectric variants were...

10.4049/jimmunol.162.1.585 article EN The Journal of Immunology 1999-01-01

Abstract Objective Autoantibodies to citrullinated proteins (ACPAs) are specific for rheumatoid arthritis (RA) and probably involved in its pathophysiology. Citrullyl residues, posttranslationally generated by peptidyl arginine deiminase (PAD), indispensable components of ACPA‐targeted epitopes. The aim this study was identify which PAD isotypes expressed the synovial tissue (ST) patients with RA citrullination fibrin, major target ACPAs. Methods Expression all isotypes, including recently...

10.1002/art.22983 article EN Arthritis & Rheumatism 2007-10-29

The so-called antikeratin antibodies (AKA) and the antiperinuclear factor (APF) are most specific serological markers of RA. Using indirect immunofluorescence, AKA label stratum corneum various cornified epithelia APF keratohyalin granules human buccal mucosa epithelium. We recently demonstrated that recognize epidermal filaggrin. Here, we report identification major antigen as a diffuse protein band 200-400 kD. This is seen to be closely related (pro) filaggrin since it was recognized by...

10.1172/jci117969 article EN Journal of Clinical Investigation 1995-06-01

In rheumatoid arthritis (RA), the high diagnostic value of serum antibodies to stratum corneum rat esophagus epithelium has been widely reported. These so-called "antikeratin antibodies," detected by indirect immunofluorescence, were found be autoantibodies since they also labeled human epidermis. Despite their name, actual target these was not known. this study, a 40-kD protein (designated as 40K), extracted from epidermis and specifically immunodetected 75% RA sera, purified identified...

10.1172/jci116713 article EN Journal of Clinical Investigation 1993-09-01

Central centrifugal cicatricial alopecia (CCCA) is the most common form of scarring among women African ancestry. The disease occasionally observed to affect in families a manner that suggests an autosomal dominant trait and usually manifests clinically after intense hair grooming. We sought determine whether there exists genetic basis CCCA and, if so, what it is.

10.1056/nejmoa1816614 article EN New England Journal of Medicine 2019-02-13

Corneodesmosin is a putative adhesion glycoprotein located in the extracellular part of desmosomes upper layers epidermis. Synthesized by granular keratinocytes as 52–56-kDa protein, corneodesmosin progressively proteolysed during corneocyte maturation. This processing prerequisite for desquamation. Two glycine- and serine-rich domains protein might take on conformation adhesive secondary structures similar to glycine loops.Corneodesmosin proteolysis was further characterized....

10.1074/jbc.m100201200 article EN cc-by Journal of Biological Chemistry 2001-01-01

Peptidylarginine deiminases (PADs) catalyse a post-translational modification of proteins through the conversion arginine residues into citrullines. The existence four isoforms PAD (types I, II, III and IV) encoded by different genes, which are distinct in their substrate specificities tissue-specific expression, was reported rodents. In present study, starting from epidermis polyadenylated RNA, we cloned reverse transcriptase-PCR full-length cDNA encoding human type I. 2711bp length...

10.1042/bj20020870 article EN Biochemical Journal 2003-02-15

The morphological aspects of ageing and growth capacity were studied in 100 lines human liver cells. Under the culture conditions employed, cells appear to have a limited replicative life span. effects similar those described tissue other organs. Studies on potential showed that there was negative correlation between age donor at last passage, maximum number doublings, doublings phase II, end II. indices different for epithelial-like fibroblast-like

10.1159/000211984 article EN Gerontology 1973-01-01

A single-nucleotide polymorphism within the gene encoding hornerin (HRNR) has recently been linked with atopic dermatitis (AD) susceptibility. HRNR shares features filaggrin, a key protein for keratino-cyte differentiation, but conflicting reports have published concerning its expression in epidermis, and role is still unknown. To analyze function anti-HRNR antibodies were produced used Western blot analysis immuno-histochemical, confocal, immunoelectron microscopy analyses of human skin...

10.1096/fj.10-168658 article EN The FASEB Journal 2011-01-31
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