Clinical photodynamic therapy (PDT) has existed for over 30 years, and its scientific basis has been known and investigated for well over 100 years. The scientific foundation of PDT is solid and its application to cancer treatment for many common neoplastic lesions has been the subject of a huge number of clinical trials and observational studies. Yet its acceptance by many clinicians has suffered from its absence from the undergraduate and/or postgraduate education curricula of surgeons, physicians, and oncologists. Surgeons in a variety of specialties many with years of experience who are familiar with PDT bear witness in many thousands of publications to its safety and efficacy as well as to the unique role that it can play in the treatment of cancer with its targeting precision, its lack of collateral damage to healthy structures surrounding the treated lesions, and its usage within minimal access therapy. PDT is closely related to the fluorescence phenomenon used in photodiagnosis. This review aspires both to inform and to present the clinical aspect of PDT as seen by a surgeon.
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| http://dx.doi.org/10.1055/s-0035-1565246 | DOI Listing |
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Photodynamic therapy of cancer-associated infections.
Photochem Photobiol
December 2024
Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.
Pathogens can be involved in tumor initiation, promotion, and progression through different mechanisms, and their treatment can prevent new cancer cases, improve outcomes, and revert poor-prognostic phenotypes. Photodynamic therapy (PDT) successfully treats different types of cancers and infections and, therefore, has a unique potential to address their combination. However, we believe this potential has been underutilized, and few researchers have investigated the impacts of PDT of both infection-related and cancer-related outcomes at once.
View Article and Find Full Text PDFImpact of light dose and fluence rate on the efficacy and tolerability of topical 5-ALA photodynamic therapy for actinic keratoses: A randomized, controlled, observer-blinded intrapatient comparison study.
J Eur Acad Dermatol Venereol
December 2024
Department of Dermatology, Medical University of Vienna, Vienna, Austria.
Background: Conventional photodynamic therapy (cPDT) is an effective treatment option for field cancerization and multiple actinic keratoses (AK). The main side effect of cPDT is pain during illumination which in severe cases might necessitate early termination of treatment. Modification of treatment parameters such as light dose and fluence rate is a promising approach to mitigate PDT-associated pain.
View Article and Find Full Text PDFFerroptosis: A novel cell death modality in or synergistic therapeutic strategy for photodynamic therapy.
Photodiagnosis Photodyn Ther
December 2024
Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China. Electronic address:
Although there has been significant progress in current comprehensive anticancer treatments centered on surgery, postoperative recurrence and tumor metastasis still significantly affect both prognosis and quality of life of the patient. Hence, the development of precisely targeted tumor therapies and exploration of immunotherapy represent ideal strategies for tumor treatment. Photodynamic therapy (PDT) is a localized and relatively safe treatment modality that not only induces multiple modes of tumor cell death but also mediates the secondary immunological responses against tumor resistance and metastasis.
View Article and Find Full Text PDFRole of antimicrobial photodynamic therapy for the management of peri-implant diseases among habitual nicotinic product users: A systematic review.
Photodiagnosis Photodyn Ther
December 2024
Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia. Electronic address:
Objective: The objective was to systematically review original studies that assessed the influence of antimicrobial photodynamic therapy (aPDT) for managing peri-implant diseases among habitual nicotinic product (NP) users.
Methods: The research question was "Is aPDT effective for managing peri-implant diseases among NP users?" Indexed databases (PubMed/Medline, EMBASE, Scopus, and ISI Web of Knowledge) and Google Scholar were searched up to and including December 2024 without time and language barriers. Using Boolean operators, the following keywords were searched in different combinations: antimicrobial photodynamic therapy; crestal bone loss; peri-implant diseases; probing depth; nicotine; and smoking.
Proton Tunneling Allows a Proton-Coupled Electron Transfer Process in the Cancer Cell.
JACS Au
December 2024
Department of Chemistry, University of Antwerp, Antwerp 2020, Belgium.
Proton-coupled electron transfer (PCET) is a fundamental redox process and has clear advantages in selectively activating challenging C-H bonds in many biological processes. Intrigued by this activation process, we aimed to develop a facile PCET process in cancer cells by modulating proton tunneling. This approach should lead to the design of an alternative photodynamic therapy (PDT) that depletes the mitochondrial electron transport chain (ETC), the key redox regulator in cancer cells under hypoxia.
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