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11 Results Found

  • Article
  • Open Access
14 Citations
9,187 Views
9 Pages

13 August 2008

We have designed imidazolium and piperazinium salts of pyropheophorbide-a in order to develop effective photosensitizers which have good solubility in polar and non polar media and to reveal the possible influences of the piperazine and imidazole moi...

  • Article
  • Open Access
74 Citations
8,275 Views
21 Pages

Photophysical Properties of Protoporphyrin IX, Pyropheophorbide-a, and Photofrin® in Different Conditions

  • Bauyrzhan Myrzakhmetov,
  • Philippe Arnoux,
  • Serge Mordon,
  • Samir Acherar,
  • Irina Tsoy and
  • Céline Frochot

9 February 2021

Photodynamic therapy (PDT) is an innovative treatment of malignant or diseased tissues. The effectiveness of PDT depends on light dosimetry, oxygen availability, and properties of the photosensitizer (PS). Depending on the medium, photophysical prope...

  • Article
  • Open Access
2 Citations
2,060 Views
16 Pages

30 August 2022

It is highly desired to enhance charge separation and O2 adsorption of the pyropheophorbide-a (Ppa) to promote visible-light activity and stability. Herein, Ppa modified 001-facet-exposed TiO2 nanosheets (Ppa/001T) nanocomposites with different weigh...

  • Article
  • Open Access
11 Citations
4,833 Views
18 Pages

Multimerization Increases Tumor Enrichment of Peptide–Photosensitizer Conjugates

  • Jisi Zhao,
  • Shuang Li,
  • Yingying Jin,
  • Jessica Yijia Wang,
  • Wenjing Li,
  • Wenjie Wu and
  • Zhangyong Hong

25 February 2019

Photodynamic therapy (PDT) is an established therapeutic modality for the management of cancers. Conjugation with tumor-specific small molecule ligands (e.g., short peptides or peptidomimetics) could increase the tumor targeting of PDT agents, which...

  • Article
  • Open Access
13 Citations
6,708 Views
12 Pages

A Novel Photosensitizer 31,131-phenylhydrazine -Mppa (BPHM) and Its in Vitro Photodynamic Therapy against HeLa Cells

  • Wenting Li,
  • Guanghui Tan,
  • Jianjun Cheng,
  • Lishuang Zhao,
  • Zhiqiang Wang and
  • Yingxue Jin

Photodynamic therapy (PDT) has attracted widespread attention due to its potential in the treatment of various cancers. Porphyrinic pyropheophorbide-a (PPa) has been shown to be a potent photosensitizer in PDT experiments. In this paper, a C-31,131 b...

  • Article
  • Open Access
2,059 Views
17 Pages

Tumor Cell-Specific Retention and Photodynamic Action of Erlotinib-Pyropheophorbide Conjugates

  • Erin C. Tracy,
  • Ravindra R. Cheruku,
  • Ravindra K. Pandey and
  • Heinz Baumann

21 September 2022

To enhance uptake of photosensitizers by epithelial tumor cells by targeting these to EGFR, pyropheophorbide derivatives were synthesized that had erlotinib attached to different positions on the macrocycle. Although the addition of erlotinib reduced...

  • Article
  • Open Access
16 Citations
6,155 Views
14 Pages

Photodynamic therapy (PDT) of the thoracic cavity can be performed in conjunction with surgery to treat cancers of the lung and its pleura. However, illumination of the cavity results in tissue exposure to a broad range of fluence rates. In a murine...

  • Article
  • Open Access
15 Citations
3,549 Views
17 Pages

To overcome the limitation of conventional cancer treatments, photodynamic therapy (PDT) has been introduced as another treatment option. PDT provides a non-invasive, non-surgical way with reduced toxicity. To improve the antitumor efficacy of PDT, w...

  • Article
  • Open Access
12 Citations
3,392 Views
17 Pages

This study combined two novel nanomedicines, a novel LCP Pyro PA photodynamic therapy (PDT) and LCP EGFR siRNA gene therapy, to treat head and neck cancer. A novel photosensitizer, pyropheophorbide phosphatydic acids (Pyro PA), was first modified int...

  • Article
  • Open Access
30 Citations
5,289 Views
23 Pages

New Targeted Gold Nanorods for the Treatment of Glioblastoma by Photodynamic Therapy

  • Zahraa Youssef,
  • Nurlykyz Yesmurzayeva,
  • Ludivine Larue,
  • Valérie Jouan-Hureaux,
  • Ludovic Colombeau,
  • Philippe Arnoux,
  • Samir Acherar,
  • Régis Vanderesse and
  • Céline Frochot

13 December 2019

This study describes the employment of gold nanorods (AuNRs), known for their good reputation in hyperthermia-based cancer therapy, in a hybrid combination of photosensitizers (PS) and peptides (PP). We report here, the design and the synthesis of th...

  • Article
  • Open Access
903 Views
22 Pages

20 November 2025

Tumbling pigeons are prone to oxidative stress and disruption of gut microbiota balance during long-term exercise training and competitions. Considering that Portulaca oleracea (P. oleracea), as a natural plant feed additive, has natural antioxidant,...