The prognosis of patients with pancreatic and biliary tract cancer treated with conventional therapies such as stent insertion or chemotherapy is often poor, and new approaches are urgently needed. Surgery is the only curative treatment but is appropriate in less than 20% of cases, and even then it is associated with a 5-yr survival of less than 30% in selected series. Photodynamic therapy represents a novel treatment for pancreaticobiliary malignancy. It is a way of producing localized tissue necrosis with light, most conveniently from a low-power, red laser, after prior administration of a photosensitizing agent, thereby initiating a non-thermal cytotoxic effect and tissue necrosis. This review outlines the mechanisms of action of photodynamic therapy including direct cell death, vascular injury, and immune system activation, and summarizes the results of preclinical and clinical studies of photodynamic therapy for pancreaticobiliary malignancy.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1385/IJGC:35:1:001 | DOI Listing |
Future Med Chem
January 2025
Department of Biophysics, School of Basic Medical Sciences, Health Science Centre, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R., China.
The rise of antibiotic-resistant Gram-positive bacterial infections poses a significant threat to public health, necessitating the exploration of alternative therapeutic strategies. A photosensitizer (PS) can convert energy from absorbed photon into reactive oxygen species (ROS) for damaging bacteria. This photoinactivation action bypassing conventional antibiotic mechanism is less prone to resistance development, making antibacterial photodynamic therapy (aPDT) highly efficient in combating Gram-positive bacteria.
View Article and Find Full Text PDFDalton Trans
January 2025
MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
Photodynamic therapy (PDT), as a non-invasive cancer treatment, offers significant advantages including high temporal-spatial selectivity, minimal surgical intervention, and low toxicity, thereby garnering considerable research interest from across the world. In this study, we have developed a series of dinuclear cyclometalated Ir(III) complexes as potential two-photon photodynamic anticancer agents. These Ir(III) complexes demonstrate significant two-photon absorption (2PA) cross-sections ( = 66-166 GM) and specifically target mitochondria.
View Article and Find Full Text PDFMikrobiyol Bul
January 2025
Uşak Üniversitesi Tıp Fakültesi, Biyofizik Anabilim Dalı, Uşak.
Layşmanyaz, yaklaşık 90'dan fazla ülke ve bölgeden bildirilen, ciddi ve endemik bir bulaşıcı hastalıktır. Kutanöz layşmanyaz (KL) ise vücudun açıkta kalan bölgelerinde oluşan, başlıca semptomları arasında vektör Phlebotomus ısırığından altı ay sonra kronikleşebilen veya kendiliğinden iyileşebilen ciltte tek, birden fazla ülserli veya nodüler lezyonlar bulunan, ölümcül olmayan ancak kalıcı izler bırakabilen bir hastalıktır. Klasik tedavi yöntemleri, uygulamada zorluk, direnç gelişimi ve yan etki gibi bir dizi soruna neden olmaktadır.
View Article and Find Full Text PDFNanomedicine (Lond)
January 2025
Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China.
Photodynamic therapy (PDT) involves the activation of photosensitizers (PSs) by visible laser light at the target site to catalyze the production of reactive oxygen species, resulting in tumor cell death and blood vessel closure. The efficacy of PDT depends on the PSs, the amount of oxygen, and the intensity of the excitation laser. PSs have been extensively researched, and great efforts have been made to develop an ideal photosensitizer.
View Article and Find Full Text PDFJ Org Chem
January 2025
Institute of Theoretical Chemistry and College of Chemistry, Jilin University, Changchun 130023, P.R. China.
Thiophene and pyrrole units are extensively utilized in light-responsive materials and have significantly advanced the field of organic photovoltaics (OPV). This progress has inspired our exploration of photosensitizers (PS) for photodynamic therapy (PDT). Currently, traditional PS face limitations in clinical application, including a restricted variety and narrow applicability.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!