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protoporphyrin/brustkrebs
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Seite 1 von 80 Ergebnisse
Comparison of protoporphyrin IX produced cell proliferation inhibition between human breast cancer MCF-7 and MDA-MB-231 cells.
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Protoporphyrin IX (PpIX) is an effective hematoporphyrin derivative, widely adopted in photodynamic therapy (PDT) and sonodynamic therapy (SDT). As a sensitizer, PpIX could significantly enhance laser light or ultrasound causing tumor cell damage in PDT/SDT studies. However, the biological function
Preferential accumulation of 5-aminolevulinic acid-induced protoporphyrin IX in breast cancer: a comprehensive study on six breast cell lines with varying phenotypes.
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We describe the potential of 5-aminolevulinic acid (ALA)-induced protoporphyrin IX (PpIX) fluorescence as a source of contrast for margin detection in commonly diagnosed breast cancer subtypes. Fluorescence intensity of PpIX in untreated and ALA-treated normal mammary epithelial and breast cancer
Breast cancer resistance protein (Bcrp1/Abcg2) is expressed in the harderian gland and mediates transport of conjugated protoporphyrin IX.
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Proper regulation of intracellular levels of protoporphyrin IX (PPIX), the direct precursor of heme, is important for cell survival. A deficiency in ferrochelatase, which mediates the final step in heme biosynthesis, leads to erythropoietic protoporphyria (EPP), a photosensitivity syndrome caused by
Vitamin D enhances the efficacy of photodynamic therapy in a murine model of breast cancer.
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Cutaneous metastasis occurs more frequently in breast cancer than in any other malignancy in women, causing significant morbidity. Photodynamic therapy (PDT), which combines a porphyrin-based photosensitizer and activation by light, can be employed for breast cancer (especially cutaneous metastases)
Hypericin and 5-aminolevulinic acid-induced protoporphyrin IX induce enhanced phototoxicity in human endometrial cancer cells with non-coherent white light.
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BACKGROUND
The in vitro experiments described in this study were aimed at exploring a synergistic effect between 5-aminolevulinic acid (5-ALA) induced protoporphyrin IX (PpIX) and hypericin. In a previous study, enhanced phototoxicity was observed in a patient during a clinical study on 5-ALA-based
Involvement of protoporphyrin IX accumulation in the pathogenesis of isoniazid/rifampicin-induced liver injury: the prevention of curcumin.
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Combination of isoniazid (INH) and rifampicin (RFP) causes liver injury frequently among tuberculosis patients. However, mechanisms of the hepatotoxicity are not entirely understood. Protoporphyrin IX (PPIX) accumulation, as an endogenous hepatotoxin, resulting from isoniazid and rifampicin
Listeria innocua Dps as a nanoplatform for bioluminescence based photodynamic therapy utilizing Gaussia princeps luciferase and zinc protoporphyrin IX.
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Listeria innocua DNA binding protein from starved cells (LiDps) belongs to the ferritin family and provides a promising self-assembling spherical 12-mer protein scaffold for the generation of functional nanomaterials. We report the creation of a Gaussia princeps luciferase (Gluc)-LiDps fusion
Rapid upregulation of cytoprotective nitric oxide in breast tumor cells subjected to a photodynamic therapy-like oxidative challenge.
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Many tumor cells produce nitric oxide (NO) as an antiapoptotic/progrowth molecule which also promotes antiogenesis and tumor expansion. This study was designed to examine possible antagonistic effects of endogenous NO on tumor eradication by photodynamic therapy (PDT). Using COH-BR1 breast cancer
Trastuzumab Conjugated Porphyrin-Superparamagnetic Iron Oxide Nanoparticle: A Potential PTT-MRI bimodal Agent for Herceptin Positive Breast Cancer
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Background: Theranostic agents combine photosensitizers and contrast agents into a single unit for photothermal therapy (PTT) and magnetic resonance imaging (MRI). The possibility of treating and diagnosing malignant cancers without any
Protoporphyrin IX-β-cyclodextrin bimodal conjugate: nanosized drug transporter and potent phototoxin.
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Topical or systemic administration of 5-aminolevulinic acid (ALA) and its esters results in increased production and accumulation of protoporphyrin IX (PpIX) in cancerous lesions allowing effective application of photodynamic therapy (PDT). The large concentrations of exogenous ALA practically
Calcitriol enhances the effect of photodynamic therapy in human breast cancer.
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OBJECTIVE
To investigate the killing effect of photodynamic therapy (PDT) mediated by hematoporphyrin derivative (HPD) on human breast cancer MCF7 and MDA-MB-231 cells in vitro.
METHODS
MCF7 and MDA-MB-231 breast cancer cells cultured in vitro were incubated with calcitriol (concentration of 10-8M,
Tumor cell death in orthotopic breast cancer model by NanoALA: a novel perspective on photodynamic therapy in oncology.
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Aim: Nano-5-aminolevulic acid (NanoALA)-mediated photodynamic therapy (PDT), an oil-in-water polymeric nanoemulsion of ALA, was evaluated in a murine model of breast cancer. Materials & methods: Analysis of ALA-derived protoporphyrin IX production and acute toxicity test,
[Fluorescence diagnosis and photodynamic therapy with 5-aminolevulinic acid induced protoporphyrin IX in gynecology: an overview].
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Fluorescence diagnosis and photodynamic therapy with 5-aminolevulinic acid induced protoporphyrin IX are promising new options in the diagnosis and therapy of diseases in a wide spectrum of medical disciplines such as urology, dermatology, gastroenterology, surgery, neurosurgery and gynecology. The
Intracellular ZnO Nanorods Conjugated with Protoporphyrin for Local Mediated Photochemistry and Efficient Treatment of Single Cancer Cell.
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ZnO nanorods (NRs) with high surface area to volume ratio and biocompatibility is used as an efficient photosensitizer carrier system and at the same time providing intrinsic white light needed to achieve cancer cell necrosis. In this letter, ZnO nanorods used for the treatment of breast cancer cell
Effects of Silencing Heme Biosynthesis Enzymes on 5-Aminolevulinic Acid-mediated Protoporphyrin IX Fluorescence and Photodynamic Therapy.
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Aminolevulinic acid (ALA)-mediated protoporphyrin IX (PpIX) production is being explored for tumor fluorescence imaging and photodynamic therapy (PDT). As a prodrug, ALA is converted in heme biosynthesis pathway to PpIX with fluorescent and photosensitizing properties. To better understand the role
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