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Biocompatible nanoparticles self-assembled by PEGylated polyphosphoesters for combination of photodynamic therapy and hypoxia-activated chemotherapy against breast cancer.
Front Pharmacol
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Department of Radiology, Tianjin Key Laboratory of Functional Imaging and Tianjin Institute of Radiology, Tianjin Medical University General Hospital, Tianjin, China.
Introduction: Although photodynamic therapy (PDT) shows considerable potential for cancer treatment due to its precise spatial control and reduced toxicity, effectively eliminating residual cells under hypoxic conditions remains challenging because of the resistance conferred by these cells.
Methods: Herein, we synthesize an amphiphilic PEGylated polyphosphoester and present a nanocarrier (NP) specifically designed for the codelivery of hydrophobic photosensitizer (chlorin e6, Ce6) and hypoxia-activated prodrugs (tirapazamine, TPZ). We investigate the antitumor effect of NP on both cellular and animal level.
Carrier-Free, Hyaluronic Acid-Modified Self-Assembled Doxorubicin, and Chlorin e6 Nanoparticles Enhance Combined Chemo- and Photodynamic Therapy in vivo.
Int J Nanomedicine
December 2024
State Key Laboratory of Ophthalmology, Optometry and Visual Science, National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
Background: Developing carrier-free nanomedicines via self-assembly of two antitumor drug molecules is a potential strategy for enhancing the combination treatment of tumors. Similarly, conventional chemotherapy combined with photodynamic therapy may synergistically improve the antitumor effect while minimizing the adverse reactions associated with antitumor treatment. Hyaluronic acid (HA) can bind to overexpressed HA receptors on the tumor cell surface, increasing cell internalization and resulting in good tumor-targeting properties.
View Article and Find Full Text PDFVisualizing and quantifying biomineral preservation in fossil vertebrate dental remains.
PeerJ
January 2025
Department of Organismal Biology, Uppsala University, Uppsala, Sweden.
In this study, we attempt to illustrate fossil vertebrate dental tissue geochemistry and, by inference, its extent of diagenetic alteration, using quantitative, semi-quantitative and optical tools to evaluate bioapatite preservation. We present visual comparisons of elemental compositions in fish and plesiosaur dental remains ranging in age from Silurian to Cretaceous, based on a combination of micro-scale optical cathodoluminescence (CL) observations (optical images and scanning electron microscope) with minor, trace and rare earth element (REE) compositions (EDS, maps and REE profiles), as a tool for assessing diagenetic processes and biomineral preservation during fossilization of vertebrate dental apatite. Tissue-selective REE values have been obtained using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), indicating areas of potential REE enrichment, combined with cathodoluminescence (CL) analysis.
View Article and Find Full Text PDFCoats' disease in adulthood with preserved vision after intravitreal aflibercept injection combined with laser photocoagulation : a case report.
BMC Ophthalmol
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Vitreoretinal Surgery Department, Hugo Chavez Hospital, Turmus Ayya, State of Palestine.
Background: This case report describes a rare case of Coats disease in adult female patient with preserved vision after intravitreal Aflibercept injection and laser photocoagulation.
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Laser therapy in Molar-Incisor Hypomineralization (MIH) teeth treatment of hypersensitivity: a systematic review.
Lasers Med Sci
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School of Dentistry of Ribeirão Preto, Department of Restorative Dentistry, University of São Paulo, Av. Café S/N, Monte Alegre, Ribeirão Preto, SP, 14040-904, Brazil.
This review investigated the effects of hypersensitivity treatment on molar-incisor hypomineralization (MIH) using laser therapy, combined or in conjunction with other therapeutic modalities. The review was conducted according to the PICOS strategy (Population, Intervention, Comparison, and Outcome) and was performed in March 2024 using the Web of Science, PubMed, Scopus and Embase. The RoB 2 tool was employed to evaluate the risk of bias.
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