Photodiagnosis and photodynamic therapy最新文献

{"title":"Application of photodynamic therapy with 5-aminolevulinic acid and fractional CO₂ laser for the management of recalcitrant plantar warts.","authors":"Jiaoquan Chen, Xinyi Xie, Yingxue Liu, Fengyi Chen, Yeqing Gong, Bihua Liang, Yiling Wu, Shiqi He, Yueming Li, Huilan Zhu, Shaoyin Ma","doi":"10.1016/j.pdpdt.2024.104407","DOIUrl":"10.1016/j.pdpdt.2024.104407","url":null,"abstract":"<p><strong>Significance: </strong>Plantar warts, benign lesions on the soles of the feet, are caused by the human papillomavirus (HPV) infecting keratinocytes. Complete eradication of these warts is challenging, often leading to recurrences. This study evaluates the combined clinical efficacy of topical 5-aminolevulinic acid (5-ALA) photodynamic therapy (PDT) and fractional carbon dioxide (CO₂) laser treatment for recalcitrant plantar warts.</p><p><strong>Approach: </strong>Data from 10 patients with recalcitrant plantar warts were analyzed. Initially, thickened hyperkeratotic tissue was removed using a super-pulsed CO₂ laser. This was followed by fractional laser application, after which a 20 % 5-ALA cream was applied occlusively for 4 h. Patients then received He-Ne laser irradiation for 30 min at an energy density of 100 mW/cm², with treatments spaced 4 weeks apart.</p><p><strong>Results: </strong>The study included 10 participants aged 24 to 53 years (mean age: 33.4 ± 8.09 years). In total, 40 lesions were treated across 1 to 9 PDT sessions, with an average of 5.2 ± 2.86 sessions per patient. Complete clearance was achieved in 3 patients (30 %), 4 patients (40 %) showed an excellent response (≥80 % improvement), while 2 patients had a partial response. One patient (10 %) showed <50 % improvement. The overall clearance rate was 70 % (28 out of 40 lesions). Aside from temporary pain during the procedure and mild erythema post-treatment, one patient developed localized proliferative scarring. After a one-year follow-up, only one patient experienced recurrence.</p><p><strong>Conclusions: </strong>The combination of 5-ALA PDT and fractional CO₂ laser therapy shows promise as an effective and safe alternative for treating persistent plantar warts.</p>","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"104407"},"PeriodicalIF":0.0,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Annals of photodynamic therapy: Publish and/or perish?","authors":"David Kessel","doi":"10.1016/j.pdpdt.2024.104398","DOIUrl":"10.1016/j.pdpdt.2024.104398","url":null,"abstract":"","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"104398"},"PeriodicalIF":0.0,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142635132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"'Photodynamic therapy light': An enhanced treatment protocol for actinic keratoses with minimal pain and optimal clinical outcome by combining laser-assisted low irradiance PDT with shortened daylight PDT.","authors":"Martin T Braun, Kelly Del Tredici, Anna Wölling, Luitgard Wiest","doi":"10.1016/j.pdpdt.2024.104372","DOIUrl":"10.1016/j.pdpdt.2024.104372","url":null,"abstract":"<p><strong>Background: </strong>Between 2003 and 2016, 546 patients in our clinic discontinued outpatient treatment for actinic keratoses (AKs) using conventional photodynamic therapy (PDT) because of intolerable pain, thereby necessitating the use of a less painful procedure. Therefore, we developed a novel off-label PDT protocol: 'PDT light'.</p><p><strong>Methods: </strong>Laser-assisted low irradiance PDT (li-PDT) was performed beginning in 2014. The dosage was gradually lowered to 8-12 J/cm² in 2018, so that we achieved considerable pain reduction while maintaining comparable therapeutic efficacy. A further considerable reduction in pain was achieved from 2018 onwards by combining the advantages of li-PDT with daylight PDT (DLPDT), thereby resulting in 2018 in the new technique 'PDT light'. Patients with AK Olsen grades 1 or 2 and field cancerization initially received a mild-fractionated CO2 laser pretreatment prior to MAL-incubation (methyl aminolaevulinate, Metvix ®) under occlusion for 1.5-3 h. Then, patients were illuminated on average for 1.02 min with the Aktilite-LED and, after application of an UV-screen on the illuminated area, sent out into daylight for 1 h.</p><p><strong>Results: </strong>Between March and November 2019, we successfully treated 152 cases using the enhanced 'PDT light' procedure, with 137 cases achieving at follow-up 1 (on average after 8.14 months) good-to-excellent clearance rates (CLA and CLB together 90 %) and minimal adverse effects.</p><p><strong>Conclusions: </strong>The novel 'PDT light' protocol proved to be an excellent and nearly painless method with an average visual-analogue scale (VAS) score of 1.19. Additional advantages included reduced illumination time, shorter outpatient stays in the clinic, fewer adverse effects, and better patient compliance than with DLPDT alone.</p>","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"104372"},"PeriodicalIF":0.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction to 18th International Photodynamic Association World Congress.","authors":"Dr. Lothar Lilge","doi":"10.1016/j.pdpdt.2024.104079","DOIUrl":"https://doi.org/10.1016/j.pdpdt.2024.104079","url":null,"abstract":"","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":"88 3","pages":"104079"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140779344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations on correlations between changes of optical tissue properties and NMR relaxation times.","authors":"Maximilian Aumiller, Asmerom Arazar, Ronald Sroka, Olaf Dietrich, Adrian Rühm","doi":"10.1016/j.pdpdt.2024.103968","DOIUrl":"10.1016/j.pdpdt.2024.103968","url":null,"abstract":"<p><strong>Background: </strong>Accurate light dosimetry is a complex remaining challenge in interstitial photodynamic therapy (iPDT) for malignant gliomas. The light dosimetry should ideally be based on the tissue morphology and the individual optical tissue properties of each tissue type in the target region. First investigations are reported on using NMR information to estimate changes of individual optical tissue properties.</p><p><strong>Methods: </strong>Porcine brain tissue and optical tissue phantoms were investigated. To the porcine brain, supplements were added to simulate an edema or high blood content. The tissue phantoms were based on agar, Lipoveneous, ink, blood and gadobutrol (Gd-based MRI contrast agent). The concentrations of phantom ingredients and tissue additives are varied to compare concentration-dependent effects on optical and NMR properties. A 3-tesla whole-body MRI system was used to determine T₁ and T₂ relaxation times. Optical tissue properties, i.e., the spectrally resolved absorption and reduced scattering coefficient, were obtained using a single integrating sphere setup. The observed changes of NMR and optical properties were compared to each other.</p><p><strong>Results: </strong>By adjusting the NMR relaxation times and optical tissue properties of the tissue phantoms to literature values, recipes for human brain tumor, white matter and grey matter tissue phantoms were obtained that mimic these brain tissues simultaneously in both properties. For porcine brain tissue, it was observed that with increasing water concentration in the tissue, both NMR-relaxation times increased, while µ_a decreased and µ_s' increased at 635 nm. The addition of blood to porcine brain samples showed a constant T₁, while T₂ shortened and the absorption coefficient at 635 nm increased.</p><p><strong>Conclusions: </strong>In this investigation, by changing sample contents, notable changes of both NMR relaxation times and optical tissue properties have been observed and their relations examined. The developed dual NMR/optical tissue phantoms can be used in iPDT research, clinical training and demonstrations.</p>","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"103968"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139433248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tumor fluorescence and oxygenation monitoring during photodynamic therapy with chlorin e6 photosensitizer.","authors":"Kanamat Efendiev, Polina Alekseeva, Kirill Linkov, Artem Shiryaev, Tatiana Pisareva, Aida Gilyadova, Igor Reshetov, Arina Voitova, Victor Loschenov","doi":"10.1016/j.pdpdt.2024.103969","DOIUrl":"10.1016/j.pdpdt.2024.103969","url":null,"abstract":"<p><strong>Background: </strong>The study is aimed at developing a method for monitoring photodynamic therapy (PDT) of a tumor using chlorin-type photosensitizers (PSs). Lack of monitoring of chlorin e6 (Cе6) photobleaching, hemoglobin oxygenation and blood flow during light exposure can limit the PDT effectiveness.</p><p><strong>Materials and methods: </strong>Phototheranostics includes spectral-fluorescence diagnostics of Ce6 distribution in the NIR range and PDT with simultaneous assessment of hemoglobin oxygenation and tumor blood flow. Fluorescence diagnostics and PDT were performed using the single laser λ_exc=660 ± 5 nm.</p><p><strong>Results: </strong>Combined spectroscopic PDT monitoring method allowed simultaneous estimation of Ce6 photobleaching, hemoglobin oxygenation and tumor vascular thrombosis during PDT without interrupting the therapeutic light exposure.</p><p><strong>Conclusion: </strong>The developed method of tumor phototheranostics using chlorin-type PSs may make it possible to personalize the duration of therapeutic light exposure during PDT.</p>","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"103969"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139428123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Hemoporfin-mediated photodynamic therapy for the treatment of port-wine stain: A multicenter, retrospective study\" [Photodiagnosis Photodyn Ther. 2023 Jun;42:103545].","authors":"Xiaofeng Zhang, Chen Yuan, Xuemin Xiao, Rui Yin, Hongzhao Lei, Yan Li, Shumao Zheng, Sijian Wen, Dongsheng Li, Xuejun Wang, Zhong Lu, Yunfeng Zhang, Weihui Zeng, Sijin He, Yuzhen Li, Dan Jian, Jun Yang, Hua Zhong, Dawei Han, Xiaoying Chen, Junfeng Zhou, Yantao Cai, Xi Peng, Zhiming Li, Xueying Liu, Tong Lin, Ruzhi Zhang, Guang Li, Yin Zhuang, Ling Liu, Yan Yan, Baoxi Wang","doi":"10.1016/j.pdpdt.2023.103931","DOIUrl":"10.1016/j.pdpdt.2023.103931","url":null,"abstract":"","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"103931"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139050027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Fluorinated triphenylamine silicon phthalocyanine nanoparticles with two-color imaging guided in vitro photodynamic therapy through lysosomal dysfunction\" [Photodiagnosis and Photodynamic Therapy 43 (2023) 103734].","authors":"Fangmei Zheng, Yan Huang, Yating Shen, Guizhi Chen, Yiru Peng, Xuemei Zhuang","doi":"10.1016/j.pdpdt.2024.103972","DOIUrl":"10.1016/j.pdpdt.2024.103972","url":null,"abstract":"","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"103972"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139704309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light dose effect of photodynamic therapy on growth inhibition and apoptosis induction in non-small cell lung cancer: A study in nude mouse model.","authors":"Wen Sun, Xiaoyu Ma, Yunxia Wang, Guosheng Yang, Jiping Liao, Yuan Cheng, Guangfa Wang","doi":"10.1016/j.pdpdt.2023.103865","DOIUrl":"10.1016/j.pdpdt.2023.103865","url":null,"abstract":"<p><strong>Background: </strong>Photodynamic therapy (PDT) is receiving increasing attention in treating non-small cell lung cancer (NSCLC) worldwide, but in clinical practice, the relationship between treatment effect and PDT light dose in NSCLC remains unclear. Therefore, we aimed to determine the optimal light dose for PDT by exploring molecular biomarkers and evaluating tumor growth data.</p><p><strong>Methods: </strong>We applied bioinformatics to identify promising genes and pathways in NSCLC and PDT. Then, the human lung adenocarcinoma cell line A549-bearing BALB/c nude mice were treated with hematoporphyrin derivative (HPD, 3 mg/kg) that is currently used widely for lung cancer treatment in the world even with photosensitization issues. After 48 h, tumor-bearing mice were irradiated superficially at doses of 100, 200, 300, 400, and 500 J/cm². The tumor growth data and apoptotic molecules were assessed and calculated.</p><p><strong>Results: </strong>Bioinformatics results indicated that the apoptosis pathway was significantly enriched and caspase 3 was the most promising biomarker on prognosis in NSCLC-PDT. Compared to the untreated group, there was no difference in the relative tumor volume (RTV) of the 100 J/cm² group, while the RTV of the other treatment groups (200-500 J/cm²) was significantly lower. In the 100 J/cm² group, there were significant differences in the complete remission (CR, 0 %) and the percentage of tumor growth inhibition rate (TGI%) over 75 % (20 %) compared with the other treatment groups, especially the 300 and 400 J/cm² groups (CR 70 %; TGI% 90 %). In the 300 and 400 J/cm² groups, the expression of caspase 3, cleaved-caspase 3, PARP1, and Bax was increased significantly, while Bcl-2 expression was significantly lower.</p><p><strong>Conclusions: </strong>Moderate doses of PDT (300 or 400 J/cm²) are more effective than low (100 or 200 J/cm²) or high doses (500 J/cm²) in the A549 tumor-bearing mice model. Since the A549 tumor is more akin to human tumors in pathological behavior, these experimental data may contribute to improving HPD-PDT illumination protocols for favorable clinical outcomes.</p>","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"103865"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72212478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"5-aminolevulinic acid photodynamic therapy using 560-1200 nm followed by 420-1200 nm broadband light in the treatment of moderate-to-severe acne.","authors":"Weinan Zhang, Zhiqiang He, Yingyue Qin, Jie Gong, Wenjun Xie, Li Tong, Shulei Liu, Luoyingzi Xie","doi":"10.1016/j.pdpdt.2023.103902","DOIUrl":"10.1016/j.pdpdt.2023.103902","url":null,"abstract":"<p><strong>Background: </strong>Moderate-to-severe acne vulgaris, which is a chronic inflammatory skin disease, seriously impacts millions of people. However, traditional therapies may cause severe adverse reactions that are unacceptable to many patients, thus limiting the further application of these therapies. Novel therapeutic approaches to effectively treat moderate-to-severe acne vulgaris with minimal adverse reactions are urgently needed. In this retrospective study, we investigated the efficacy and adverse reactions of photodynamic therapy (PDT) using 560-1200 nm followed by 420-1200 nm broadband light (BBL).</p><p><strong>Methods: </strong>Twenty-four patients with moderate-to-severe acne vulgaris were included in the study and all patients expressed a strong desire for beauty. After aminolevulinic acid (ALA) gel applied, the entire face was sequentially irradiated by using BBL with a 560 nm cut-off filter (560-1200 nm), followed by BBL with a 420 nm cut-off filter (420-1200 nm). The clinical efficacy was evaluated by the proportion of patients achieving cured response and excellent response (effective rate), based on the percentage of lesions reduction (treatment rate). The fluorescent images and photographs of acne vulgaris were recorded. Pain and other common local adverse reactions during the treatment were also recorded and evaluated.</p><p><strong>Results: </strong>In patients with moderate acne, the mean treatment rates were 57.74 ± 16.40 (%) and 87.40 ± 8.521 (%) at the 6th week and 12th week of treatment, respectively. In patients with severe acne, the mean treatment rates were 60.95 ± 12.06 (%) and 85.04 ± 9.115 (%) at the 6th week and 12th week of treatment, respectively. At the 6th and 12th weeks of treatment, the effective rates of patients were 20.00 % and 93.33 % in patients with moderate acne, and 0.000 % and 88.89 % in patients with severe acne, respectively. Pain scores were significantly higher in patients with severe acne compared to patients with moderate acne when receiving 560-1200 nm BBL-PDT. Additionally, patients when receiving 420-1200 nm BBL-PDT exhibited significantly higher pain scores than those when receiving 560-1200 nm BBL-PDT. The degree of erythema was more severe in patients with severe acne than in those with moderate acne. The pigmentation was observed in one patient with moderate acne and one patient with severe acne.</p><p><strong>Conclusion: </strong>The 560-1200 nm and 420-1200 nm BBL-PDT therapy can effectively treat moderate-to-severe acne vulgaris with tolerable adverse reactions, providing a new option for patients with higher esthetic requirements.</p>","PeriodicalId":94170,"journal":{"name":"Photodiagnosis and photodynamic therapy","volume":" ","pages":"103902"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138178377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}