Photodynamic Diagnosis with 5&amp;ndash;Aminolevulinic Acid in the Treatment of Secondary Urethral Tumors: First in vitro and in vivo Results

Höltl, Lorenz; Eder, Iris E.; Klocker, Helmut; Hobisch, Alfred; Bartsch, Georg; Stenzl, Arnulf

doi:10.1159/000052433

Cited by 8 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, ferrochelatase is inactive in various cancer types, including BC. Thus, PpIX accumulates more in tumor cells than in healthy cells due to decreased ferrochelatase activity [78][79][80]. Activating the 5-ALA synthetic enzyme and 5-ALA influx transporter (peptide transporter 1) promotes PpIX production in tumor cells [71].…”

Section: Photodynamic Diagnosis Photodynamic Therapy and Photodynamic...mentioning

confidence: 99%

Photodynamic Diagnosis and Therapy in Non-Muscle-Invasive Bladder Cancer

Kurabayashi,

Fukuhara,

Furihata

et al. 2024

Cancers

View full text Add to dashboard Cite

Bladder cancer (BC) possesses distinct molecular profiles that influence progression depending on its biological nature and delivered treatment intensity. Muscle-invasive BC (MIBC) and non-MIBC (NMIBC) demonstrate great intrinsic heterogeneity regarding different prognoses, survival, progression, and treatment outcomes. Transurethral resection of bladder tumor (TURBT) is the standard of care in treating NMIBC and serves both diagnostic and therapeutic purposes despite the prevalent recurrence and progression among many patients. In particular, flat urothelial carcinoma in situ and urothelial carcinoma with lamina propria invasion are the major precursors of MIBC. A new-generation photosensitizer, 5-Aminolevulinic acid (5-ALA), demonstrates high tumor specificity by illuminating the tumor lesion with a specific wavelength of light to produce fluorescence and has been studied for photodynamic diagnosis to detect precise tumor areas by TURBT. Additionally, it has been applied for treatment by producing its cytotoxic reactive oxygen species, as well as screening for urological carcinomas by excreting porphyrin in the blood and urine. Moreover, 5-ALA may contribute to screening before and after TURBT in NMIBC. Here, we summarize the updated evidence and ongoing research on photodynamic technology for NMIBC, providing insight into the potential for improving patient outcomes.

show abstract