Short-term changes in frequencies of circulating leukocytes associated with narrowband UVB phototherapy in people with clinically isolated syndrome.

Abstract:

:Clinically isolated syndrome (CIS) is the earliest clinical episode in multiple sclerosis (MS). Low environmental exposure to UV radiation is implicated in risk of developing MS, and therefore, narrowband UVB phototherapy might delay progression to MS in people with CIS. Twenty individuals with CIS were recruited, and half were randomised to receive 24 sessions of narrowband UVB phototherapy over a period of 8 weeks. Here, the effects of narrowband UVB phototherapy on the frequencies of circulating immune cells and immunoglobulin levels after phototherapy are reported. Peripheral blood samples for all participants were collected at baseline, and 1, 2, 3, 6 and 12 months after enrolment. An extensive panel of leukocyte populations, including subsets of T cells, B cells, monocytes, dendritic cells, and natural killer cells were examined in phototherapy-treated and control participants, and immunoglobulin levels measured in serum. There were significant short-term increases in the frequency of naïve B cells, intermediate monocytes, and fraction III FoxP3+ T regulatory cells, and decreases in switched memory B cells and classical monocytes in phototherapy-treated individuals. Since B cells are increasingly targeted by MS therapies, the effects of narrowband UVB phototherapy in people with MS should be investigated further.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Trend S,Jones AP,Cha L,Cooper MN,Geldenhuys S,Fabis-Pedrini MJ,Carroll WM,Cole JM,Booth DR,Lucas RM,French MA,Byrne SN,Kermode AG,Hart PH

doi

10.1038/s41598-019-44488-6

subject

Has Abstract

pub_date

2019-05-28 00:00:00

pages

7980

issue

1

issn

2045-2322

pii

10.1038/s41598-019-44488-6

journal_volume

9

pub_type

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