title: Neurovascular and neuroimmune aspects in the pathophysiology of rosacea.
abstract: Rosacea is a common skin disease with a high impact on quality of life. Characterized by erythema, edema, burning pain, immune infiltration, and facial skin fibrosis, rosacea has all the characteristics of neurogenic inflammation, a condition induced by sensory nerves via antidromically released neuromediators. To investigate the hypothesis of a central role of neural interactions in the pathophysiology, we analyzed molecular and morphological characteristics in the different subtypes of rosacea by immunohistochemistry, double immunofluorescence, morphometry, real-time PCR, and gene array analysis, and compared the findings with those for lupus erythematosus or healthy skin. Our results showed significantly dilated blood and lymphatic vessels. Signs of angiogenesis were only evident in phymatous rosacea. The number of mast cells and fibroblasts was increased in rosacea, already in subtypes in which fibrosis is not clinically apparent, indicating early activation. Sensory nerves were closely associated with blood vessels and mast cells, and were increased in erythematous rosacea. Gene array studies and qRT-PCR confirmed upregulation of genes involved in vasoregulation and neurogenic inflammation. Thus, dysregulation of mediators and receptors implicated in neurovascular and neuroimmune communication may be crucial at early stages of rosacea. Drugs that function on neurovascular and/or neuroimmune communication may be beneficial for the treatment of rosacea.
authors.affiliation: Department of Dermatology, University Hospital Münster, Münster, Germany.
authors.forename: Verena D
authors.initials: VD
authors.lastname: Schwab
authors.forename: Mathias
authors.initials: M
authors.lastname: Sulk
authors.forename: Stephan
authors.initials: S
authors.lastname: Seeliger
authors.forename: Pawel
authors.initials: P
authors.lastname: Nowak
authors.forename: Jerome
authors.initials: J
authors.lastname: Aubert
authors.forename: Christian
authors.initials: C
authors.lastname: Mess
authors.forename: Michel
authors.initials: M
authors.lastname: Rivier
authors.forename: Isabelle
authors.initials: I
authors.lastname: Carlavan
authors.forename: Patricia
authors.initials: P
authors.lastname: Rossio
authors.forename: Dieter
authors.initials: D
authors.lastname: Metze
authors.forename: Jörg
authors.initials: J
authors.lastname: Buddenkotte
authors.forename: Ferda
authors.initials: F
authors.lastname: Cevikbas
authors.forename: Johannes J
authors.initials: JJ
authors.lastname: Voegel
authors.forename: Martin
authors.initials: M
authors.lastname: Steinhoff
mesh_terms: D005347:Fibroblasts / Q000276:immunology / Q000502:physiology; D020869:Gene Expression Profiling; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000235:genetics / Q000276:immunology / Q000503:physiopathology; D042601:Lymphatic Vessels / Q000276:immunology / Q000503:physiopathology; D008407:Mast Cells / Q000276:immunology / Q000502:physiology; D009389:Neovascularization, Pathologic / Q000235:genetics / Q000276:immunology / Q000503:physiopathology; D020078:Neurogenic Inflammation / Q000235:genetics / Q000276:immunology* / Q000473:pathology / Q000503:physiopathology*; D012393:Rosacea / Q000235:genetics / Q000276:immunology* / Q000473:pathology / Q000503:physiopathology*; D012867:Skin / Q000098:blood supply / Q000294:innervation* / Q000473:pathology / Q000503:physiopathology*; D015854:Up-Regulation; D014664:Vasodilation / Q000235:genetics / Q000276:immunology / Q000502:physiology; D014746:Vimentin / Q000032:analysis / Q000276:immunology
chemical_list: D014746:Vimentin
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