Cited by 23Acne and Rosacea Treatments and EffectsPhotodynamic Therapy Research StudiesDermatologic Treatments and Research

Optimizing treatment of acne with photodynamic therapy (PDT) to achieve long-term remission and reduce side effects. A prospective randomized controlled trial

Wojewoda, Karolina, Gillstedt, Martin, Tovi, Jonatan, Salah, Louai, Wennberg Larkö, Ann-Marie, Sjöholm, Alexandra, Sandberg, Carin·2021·Journal of Photochemistry and Photobiology B: Biology

Abstract

Photodynamic therapy with methyl aminolevulinate (MAL-PDT) is an effective treatment of acne vulgaris, but is associated with side effects. We performed a prospective randomized split-face study aimed at optimizing MAL-PDT treatment. Patients (n = 33) were randomized to two or four treatments of PDT with MAL on one cheek and placebo vehicle on the other cheek, 1-2 weeks apart. A 1.5-h pre-treatment with the MAL cream was followed by illumination with red light (20 J/cm 2). Assessments were performed before treatment and 4, 10, and 20 weeks after the last treatment. In comparison to baseline, the number of inflammatory lesions at 20 weeks on cheeks treated with MAL-PDT showed a relative decrease of 74% in the group with two treatments and 85% in the group with four treatments. This new treatment regimen for both MAL-PDT and red-light-only PDT, with shortened pre-treatment and reduced light dose, could be an effective modality.

Integrity signals

Registry

Crossref · 10.1016/j.jphotobiol.2021.112299

Cites

28 of 28 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

2 of the 30 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Wojewoda, K., Gillstedt, M., Tovi, J., Salah, L., Wennberg Larkö, A.-M., Sjöholm, A., & Sandberg, C.
Affiliations
  • Sahlgrenska University Hospital (SE)
  • University of Gothenburg (SE)
Corresponding author
Wojewoda, Karolina
Venue
Journal of Photochemistry and Photobiology B: Biology
Publisher
Elsevier BV
Published
2021-10
Volume
223
Pages
112299
ISSN
1011-1344 (ISSN-L)
OpenAlex
W3193836651
Cited by
23
References
30
Citations by year
2026: 1 · 2025: 5 · 2024: 9 · 2023: 4 · 2022: 4
FWCI
3.77
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Photochemistry and Photobiology B Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Dermatology › Acne and Rosacea Treatments and Effects
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
  • Health Sciences › Medicine › Dermatology › Dermatologic Treatments and Research
Keywords
acne, photodynamic therapy, methyl aminolevulinate, treatment regimen optimization, red light illumination, inflammatory lesions, long-term remission, treatment side effects, split-face study
MeSH terms
Acne Vulgaris, Adolescent, Adult, Aminolevulinic Acid, Female, Humans, Light, Male, Pain, Photochemotherapy, Placebo Effect, Treatment Outcome, Photosensitizing Agents, Young Adult

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review