ArticleJournal of neuro-oncology2021
5-ALA kinetics in meningiomas: analysis of tumor fluorescence and PpIX metabolism in vitro and comparative analyses with high-grade gliomas.
Article in Journal of neuro-oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.
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Who cites it
14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 17 citations in OpenAlex.
- 5-Aminolevulinic acid as an emerging radiosensitizer for radiodynamic therapy in solid tumors: a systematic review of available data and clinical potential.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2025Pooled it
- Efficacy and safety of 5-aminolevulinic acid in meningioma resection: a systematic review and meta-analysis.Neurosurgical review · 2025Pooled it
- Fluorescence-guided surgery combined with intraoperative photodynamic therapy for recurrent atypical and anaplastic intracranial meningiomas: a prospective feasibility study.Frontiers in oncology · 2026Article
- Review
- Article
- Re-evaluating the grading of established commercialized meningioma cell line.Neurosurgical review · 2024Article
- Fluorescence and immune-cell infiltration of nonneoplastic, postbrachytherapy brain tissue in 5-ALA-guided resection of recurrent anaplastic meningioma: illustrative case.Journal of neurosurgery. Case lessons · 2024Article
- 5-aminolevulinic acid induced photodynamic reactions in diagnosis and therapy for female lower genital tract diseases.Frontiers in medicine · 2024Review
- Molecular predictors for decitabine efficacy in meningiomas - a pilot study.Journal of neuro-oncology · 2023Article
- 5-Aminolevulinic Acid as a Theranostic Agent for Tumor Fluorescence Imaging and Photodynamic Therapy.Bioengineering (Basel, Switzerland) · 2023Review
- Article
- Advances in the intraoperative delineation of malignant glioma margin.Frontiers in oncology · 2023Review
- The NXDC-MEN-301 Study on 5-ALA for Meningiomas Surgery: An Innovative Study Design for the Assessing the Benefit of Intra-Operative Fluorescence Imaging.Brain sciences · 2022Article
- Whole-brain MR-registered cryo-imaging of a porcine-human glioma model to compare contrast agent biodistributions.Proceedings of SPIE--the International Society for Optical EngineeringArticle
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionAlthough the utility 5-aminolevulinic acid (5-ALA)-mediated fluorescence-guided surgery (FGS) in meningiomas is increasingly discussed, data about the kinetics of protoporphyrin IX (PpIX) and tumor fluorescence are sparse.
methodsPpIX kinetics after exposition to varying 5-ALA doses (12.5-150 µg/ml) was analyzed in two immortalized as well as primary WHO grade I and II meningioma and U87 high-grade glioma cell lines. Expression of FECH, ABCB6 and ABCG2 was investigated by quantitative real-time PCR.
resultsFluorescence in Ben-Men 1 and primary WHO grade I/II meningioma increased with rising 5-ALA doses up to 100 µg/ml but then showed a saturation effect. However, decrease of fluorescence was slower after 150 than after 100 µg/ml 5-ALA. Fluorescence in U87 cells marginally increased with rising 5-ALA doses. Kinetics of the fluorescence in Ben-Men 1 cells did not differ from primary meningioma cells after 25-150 µg/ml 5-ALA (p > .05, each). No difference was found when comparing the fluorescence between primary grade I and II meningiomas after any 5-ALA dosage (p > .05, each). No relevant fluorescence was found in IOMM-Lee cells. Expression of FECH, ABCB6 and ABCG2 as well as PpIX export differed between all analyzed cell lines but were not connected to fluorescence.
conclusionsEligibility of established meningioma cell lines for in-vitro analyzes of tumor fluorescence significantly differs. Fluorescence in Ben-Men 1 and primary meningioma cell lines but less in IOMM Lee cells is 5-ALA dose-dependent, encouraging in-situ trials to encounter currently discussed shortcomings of FGS in meningiomas. Fluorescence is not related to expression of FECH, ABCB6 and ABCG2.
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