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Shi L, Liu P, Wu J, Ma L, Zheng H, Antosh MP, Zhang H, Wang B, Chen W, Wang X. The effectiveness and safety of X-PDT for cutaneous squamous cell carcinoma and melanoma. Nanomedicine (Lond) 2019; 14:2027-2043. [PMID: 31165659 DOI: 10.2217/nnm-2019-0094] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Aim: To clarify the effectiveness and safety of x-ray-activated photodynamic therapy (X-PDT) for cutaneous squamous cell carcinoma (SCC) and melanoma. Materials & methods: Copper-cysteamine nanoparticles were used as a photosensitizer of X-PDT. The dark toxicity and cytotoxicity were studied in vitro. Tumor volume, microvessel density and acute toxicity of mice were evaluated in vivo. Results: Without x-ray irradiation, copper-cysteamine nanoparticles were nontoxic for keratinocyte cells. XL50 cells (SCC) were more sensitive to X-PDT than B16F10 cells (melanoma). X-PDT successfully inhibited the growth of SCC in vivo (p < 0.05), while the B16F10 melanoma was resistant. Microvessel density in SCC tissue was remarkably reduced (p < 0.05). No obvious acute toxicity reaction was observed. Conclusion: X-PDT is a safe and effective treatment for SCC.
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Affiliation(s)
- Lei Shi
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, 200443, PR China
| | - Pei Liu
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, 200443, PR China
| | - Jing Wu
- Department of Computer Science & Statistics, University of Rhode Island, 9 Greenhouse Rd, Kingston, RI 02881, USA
| | - Lun Ma
- Department of Physics, the University of Texas at Arlington, Arlington, TX 76019-0059, USA
| | - Han Zheng
- Department of Physics, the University of Texas at Arlington, Arlington, TX 76019-0059, USA
| | - Michael P Antosh
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02881, USA.,Institute for Brain & Neural Systems, Brown University, 184 Hope St, Providence, RI 02912, USA
| | - Haiyan Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, 200443, PR China
| | - Bo Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, 200443, PR China
| | - Wei Chen
- Department of Physics, the University of Texas at Arlington, Arlington, TX 76019-0059, USA
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, 200443, PR China
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Palliative reconstructive surgery: contextualizing palliation in resource-poor settings. PLASTIC SURGERY INTERNATIONAL 2014; 2014:275215. [PMID: 25530878 PMCID: PMC4230194 DOI: 10.1155/2014/275215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/21/2014] [Accepted: 10/04/2014] [Indexed: 11/17/2022]
Abstract
Introduction. Palliative care in Kenya and the larger Sub-Saharan Africa is considered a preserve of hospices, where these exist. Surgical training does not arm the surgeon with the skills needed to deal with the care of palliative patients. Resource constraints demand that the surgeon be multidiscipline trained so as to be able to adequately address the needs of a growing population of patients that could benefit from surgical palliation. Patients and Methods. The author describes his experience in the management of a series of 31 palliative care patients, aged 8 to 82 years. There were a total of nine known or presumed mortalities in the first year following surgery; 17 patients experienced an improved quality of life for at least 6 months after surgery. Fourteen of these were disease-free at 6 months. Conclusion. Palliative reconstructive surgery is indicated in a select number of patients. Although cure is not the primary intent of palliative surgery, the potential benefits of an improved quality of life and the possibility of cure should encourage a more proactive role for the surgeon. The need for palliative care can be expected to increase significantly in Africa, with the estimated fourfold increase of cancer patients over the next 50 years.
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