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Journal of Environmental Pathology, Toxicology and Oncology
Главный редактор: Qian Peng (open in a new tab)

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ISSN Печать: 0731-8898

ISSN Онлайн: 2162-6537

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 2.4 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 2.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.5 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00049 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.59 SJR: 0.429 SNIP: 0.507 CiteScore™:: 3.9 H-Index: 49

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Induction of Apoptosis by Hexaminolevulinate-Mediated Photodynamic Therapy in Human Colon Carcinoma Cell Line 320DM

Том 25, Выпуск 1-2, 2006, pp. 159-172
DOI: 10.1615/JEnvironPatholToxicolOncol.v25.i1-2.90
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Краткое описание

Photodynamic therapy (PDT) typically involves systemic or topical administration of a tumor-localizing photosensitizer or prodrug and its subsequent activation by visible light. This results primarily in singlet oxygen-induced photodamage to the tumor. 5-Aminolevulinic acid (ALA) and its derivatives have recently been widely used for PDT due to their selective induction in tumor of endogenous protoporphyrin IX (PpIX), a potent photosensitizer. Although ALA-PDT has achieved successful results in the treatment of several clinical oncological and nononcological diseases, the mechanisms of this modality are still not fully elucidated. In the present study, the human colon carcinoma cell line 320DM was treated in vitro with PDT using hexaminolevulinate (HAL), a hexylester of ALA known to be 50 to 100 times more efficient at producing PpIX formation than ALA itself. PpIX production increased with increasing HAL concentrations in the cells and phototoxicity of the cells was enhanced with increasing light (450 nm) doses. HAL-PDT induced apoptotic cell death, as measured by nuclear staining of Hoechst 33342 for fluorescence microscopy, DNA electrophoresis and TdT staining for flow cytometry. PDT with 5 μM of HAL and a light dose of 640 mJ/cm2 produced a 75% apoptotic cell population 40 hr after the treatment. Furthermore, the loss of mitochondrial membrane potential coincident with the release of cytochrome c from the mitochondria into the cytosol led to a rapid activation of caspase-9 and caspase-3 (an executioner), indicating that the selective damage to the mitochondria by HAL-PDT can induce a cytochrome-c-mediated apoptotic response in the 320DM cells.

ЦИТИРОВАНО В
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