Imaging of vitamin D in psoriatic skin using time-of-flight secondary ion mass spectrometry (ToF-SIMS): A pilot case study
Journal article, 2019

Recently it has been recognized that there is a need of investigating in detail the vitamin D synthesis and metabolism directly in the skin with respect to its possible autocrine and paracrine actions. The potential effects the active metabolite of vitamin D exerts in pathological skin conditions like psoriasis needs to be clarified. Under ultraviolet B (UVB) irradiation skin can autonomously synthesize, activate and degrade vitamin D. In this pilot case study, we used for the first time Time-of-flight secondary ion mass spectrometry (ToF-SIMS) in the analysis of skin biopsies from a patient with psoriasis before and after UVB phototherapy. We were able to visualize vitamin D 3 and its metabolites in the skin and subcutaneous tissue. At the same time information about their localization at subcellular level and morphology of the skin was received. This study proves that ToF-SIMS is a promising powerful tool to be used when investigating vitamin D´s role in dermatological diseases through skin biopsies.

Narrow-band UVB

Vitamin D




Maria Siekkeri Vandikas

University of Gothenburg

Evelina Hellström

University of Gothenburg

Per Malmberg

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Amra Osmancevic

University of Gothenburg

Sahlgrenska University Hospital

Journal of Steroid Biochemistry and Molecular Biology

0960-0760 (ISSN)

Vol. 189 154-160

Subject Categories

Dermatology and Venereal Diseases

Medical Laboratory and Measurements Technologies

Other Medical Engineering


Chemical Imaging Infrastructure





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