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Incidental detection of S. pyogenes-DNA in psoriatic skin by PCR
1Department for Dermatology, Ludwig Maximilians-University, Frauenlobstr. 9-11, 80337, Munich, Germany. peter.weisenseel@derma.med.uni-muenchen.de
Abstract:
Psoriasis vulgaris is a T cell-mediated autoimmune skin disease. First disease onset and disease worsening are often triggered by tonsillar infection with Streptococcus pyogenes. Here we demonstrate the incidental detection of S. pyogenes DNA in samples of different biological origin from patients with chronic plaque-type psoriasis by PCR. These findings may support the model of molecular mimicry in psoriasis pathogenesis.
Insights
Psoriasis vulgaris, an autoimmune skin disease, may be linked to Streptococcus pyogenes. Researchers found S. pyogenes DNA in psoriasis patients, supporting the molecular mimicry model for disease development.
Area of Science:
- Immunodermatology
- Microbial pathogenesis
- Autoimmune diseases
Background:
- Psoriasis vulgaris is a T cell-mediated autoimmune skin condition.
- Tonsillar infections with Streptococcus pyogenes are frequently implicated in psoriasis onset and exacerbation.
Purpose of the Study:
- To investigate the presence of Streptococcus pyogenes in patients with chronic plaque-type psoriasis.
- To explore the potential role of S. pyogenes in psoriasis pathogenesis through molecular mimicry.
Main Methods:
- Polymerase Chain Reaction (PCR) was employed to detect S. pyogenes DNA.
- Samples from patients with chronic plaque-type psoriasis were analyzed.
Main Results:
- Streptococcus pyogenes DNA was incidentally detected in biological samples from patients.
- The presence of bacterial DNA suggests a potential link between S. pyogenes and psoriasis.
Conclusions:
- The findings support the molecular mimicry hypothesis in the pathogenesis of psoriasis vulgaris.
- This research highlights a potential microbial trigger for this autoimmune skin disease.
