ArticleCaspian journal of internal medicine2021
The effect of narrowband ultraviolet B phototherapy on serum folate level.
Article in Caspian journal of internal medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.
- Narrowband-Ultraviolet B Phototherapy for Psoriasis Treatment in Skin of Color: A Systematic Review and Meta-Analysis.Photodermatology, photoimmunology & photomedicine · 2025Pooled it
- Therapy of PsO in Special Subsets of Patients.Biomedicines · 2022Review
- Oversight and Management of Women with Psoriasis in Childbearing Age.Medicina (Kaunas, Lithuania) · 2022Review
- Pruritus in Pregnancy.American journal of clinical dermatology · 2022Review
- Folic Acid Protects Melanocytes from Oxidative Stress via Activation of Nrf2 and Inhibition of HMGB1.Oxidative medicine and cellular longevity · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNarrowband ultraviolet B (NB-UVB) phototherapy has been used as a common treatment for dermatologic diseases such as psoriasis and vitiligo and generally considered a safe form of therapy during pregnancy. Invitro photodegradation of folate after exposure to UVB radiation has been documented but studies on UVB-induced alternation of serum folate level have reported inconsistent results. The aim of this study was to investigate the effect of NB-UVB radiation on serum folate level.
methodsIn this study, serum folate levels were evaluated in patients at baseline and after 30 sessions of NB-UVB irradiation.
resultsTwenty patients completed the study: 10 psoriasis, 7 vitiligo and 3 mycosis fungoides (patch stage). Mean serum folate level had significantly decreased from 2.76±0.59 ng/ml at baseline to 1.34±0.15 ng/ml after 30 sessions. (Mean NB-UVB cumulative dose 40.35±16.80 j/cm
conclusionSerum folate levels may decrease after long-term NB-UVB phototherapy in patients with skin disorders.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.