Spondyloarthritis & psoriatic arthritis

Alterations in the cutaneous microbiome of patients with psoriasis and psoriatic arthritis reveal similarities between non-lesional and lesional skin

Ann Rheum DisPublished Cross-sectional study

Authors' conclusion

These findings show differences in diversity, bacterial composition and microbe-microbe interactions between healthy and psoriatic skin, both L and NL.

Study context

Population
Healthy individuals and patients with psoriasis (PsO) and psoriatic arthritis (PsA); skin swabs from upper and lower extremities
Exposure
Psoriatic lesional and non-lesional skin vs healthy skin
Outcome
Cutaneous microbiome vs healthy skin
Methodological details16S rRNA sequencing, lesional and contralateral non-lesional sampling
  • 16S rRNA sequencing
  • Lesional and contralateral non-lesional sampling

Main finding

As reported in the abstract

Alpha diversity significantly reduced in psoriatic non-lesional (NL) and L skin vs healthy skin
p<0.05
Psoriatic samples clustered separately from healthy in beta diversity plots
p<0.05

Observational data: associations, not effects.

Further findings

OutcomeP value
Relative abundance of Corynebacterium, NL samplesPsA vs PsOP < 0.05
  • Relative abundance of Corynebacterium, NL samples: higher in NL PsA vs NL PsO; potentially a biomarker for disease progression

Original publication

Alterations in the cutaneous microbiome of patients with psoriasis and psoriatic arthritis reveal similarities between non-lesional and lesional skin. Ann Rheum Dis. Published 12 December 2022. doi:10.1136/ard-2022-223389

Composed by AI from the published abstract and checked against it. How Briefs are made →

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