3 years ago

Moderate to severe hidradenitis suppurativa patients do not have an altered bacterial composition in peripheral blood compared to healthy controls

Iben Marie Miller, Hans Christian Ring, Thomas Bjarnsholt, Jonathan Thorsen, Henrik Vedel Nielsen, Lee O'Brien Andersen, Lene Bay, Berit Lilje, Ditte Marie Saunte, Peter Theut Riis, Niels Larsen, Gregor Borut Jemec, Kurt Fuursted
Background Hidradenitis Suppurativa (HS) is a chronic inflammatory skin disease defined by recurrent nodules, tunnels and scarring involving the intertriginous skin. HS patients often report an array of systemic symptoms such as fatigue and malaise. The etiology of these symptoms remains unclear. Previously, various bacteria have been associated with mature HS lesions and bacteremia has been reported in HS patients using traditional culturing methods. Thus, we hypothesized that a low-grade bacteremia contributes to the symptomatology in HS patients. Objective To explore the potential presence of bacteraemia in HS patients and healthy controls. Method A case control study. Compositions of bacteria in the blood of 27 moderate to severe HS patients and 26 healthy controls were investigated using Next Generation 16S ribosomal RNA gene Sequencing (NGS) and routine anaerobic and aerobic blood culturing. None of the participants received any antibiotics (systemic or topical therapy) within one month prior to the study. HS patients with a recent flare were randomly selected by consecutive recruitment of eligible patients from the Department of Dermatology, Zealand University Hospital, Denmark. Healthy controls were recruited from the University of Copenhagen as well as from the health care staff. Results The different bacterial compositions were investigated using NGS and traditional anaerobic and aerobic blood culturing. Our NGS analysis provided a previously unreported characterization of the bacterial composition in peripheral blood from HS patients and healthy controls. Overall, our data demonstrated that HS patients do not have a different bacterial composition in their peripheral blood than healthy controls. Conclusion The study suggests the self-reported symptoms in HS such as malaise and fatigue may not be linked to bacteremia. This article is protected by copyright. All rights reserved.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/jdv.14538

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