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Search: WFRF:(Jahns Anika C) > (2014)

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1.
  • Jahns, Anika C., et al. (author)
  • Microbiology of folliculitis : a histological study of 39 cases
  • 2014
  • In: Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS). - : Wiley-Blackwell. - 0903-4641 .- 1600-0463. ; 122:1, s. 25-32
  • Journal article (peer-reviewed)abstract
    • Folliculitis is a common inflammatory skin syndrome. Several microbial organisms have been put forward as causative agents, but few studies visualized microbes directly in inflamed hair follicles. This retrospective study investigated bacterial and fungal colonization of inflamed hair follicles in patients with clinically diagnosed non-infectious folliculitis. Skin biopsies from 39 folliculitis patients and 27 controls were screened by fluorescence in situ hybridization (FISH) using broad-range bacterial and fungal probes and by immunofluorescence microscopy using a monoclonal antibody towards Gram-positive bacteria. Specific monoclonal and polyclonal antibodies towards Staphylococcus spp. and Propionibacterium acnes were applied for further species identification. Inflamed follicles were associated with bacterial colonization in 10 samples (26%) and fungal colonization in three samples (8%). Staphylococcus spp. were observed in inflamed follicles in seven samples (18%). Two samples were positive for P. acnes, which were identified as either type II or type IB/type III. Both Staphylococcus spp. and P. acnes were seen in macrocolonies/biofilm structures. In conclusion, one-third of patients with clinically diagnosed, non-infectious folliculitis exhibited microbial colonization with predominance of Staphylococcus spp.
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2.
  • Jahns, Anika C., et al. (author)
  • Three dimensional distribution of Propionibacterium acnes biofilms in human skin
  • 2014
  • In: Experimental dermatology. - : John Wiley & Sons. - 0906-6705 .- 1600-0625. ; 23:9, s. 687-689
  • Journal article (peer-reviewed)abstract
    • Propionibacterium acnes is regarded as a common member of the human skin microbiota, often occurring in biofilms. Little is known about the size of bacterial biofilms in hair follicles as a few sections of biopsy tissue are routinely evaluated. Transversal sectioning provides a better opportunity for histological analyses of hair follicles which can be followed through the different morphological levels. Direct visualization of P.acnes biofilms in hundreds of consecutive sections allowed insight into the 3D distribution in human hair follicles as well as investigating the depth of biofilm distribution within hair follicles. Four distinct colonization patterns of P.acnes biofilms were revealed. Results have shown that an individual P.acnes biofilm can spread for 1900m in a terminal hair follicle. This information can be of help while designing potential antibiofilm treatment.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Alexeyev, Oleg A. (2)
Jahns, Anika C. (2)
Golovleva, Irina (1)
Lundskog, Bertil (1)
Palmer, Ruth H (1)
McDowell, Andrew (1)
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Patrick, Sheila (1)
Berg, Johanna (1)
Jonsson, Rebecca (1)
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University
Umeå University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Medical and Health Sciences (1)
Year
2014 (2)Undo refine

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