Results 11 to 20 of about 32,162 (236)

Mechanism of Tetracycline Phototoxicity [PDF]

open access: yesJournal of Investigative Dermatology, 1984
Studies were made to determine factors important in the phototoxicity mechanism of 7 clinically used tetracyclines (TC). The clinical phototoxicity, the rates of photochemical degradation, and the in vitro phototoxicity of the TCs were qualitatively but not quantitatively correlated.
Hasan, Tayyaba   +4 more
openaire   +5 more sources

An Optically Stabilized Fast-Switching Light Emitting Diode as a Light Source for Functional Neuroimaging [PDF]

open access: yes, 2012
Neuroscience research increasingly relies on optical methods for evoking neuronal activity as well as for measuring it, making bright and stable light sources critical building blocks of modern experimental setups. This paper presents a method to control
Wagenaar, Daniel A.
core   +21 more sources

Assessing Phototoxicity in a Mammalian Cell Line: How Low Levels of Blue Light Affect Motility in PC3 Cells

open access: yesFrontiers in Cell and Developmental Biology, 2021
Phototoxicity is a significant constraint for live cell fluorescence microscopy. Excessive excitation light intensities change the homeostasis of the observed cells.
Rana A. Alghamdi   +6 more
doaj   +1 more source

Evaluation of skin phototoxicity of transdermally administered pharmaceuticals in Sprague-Dawley rats

open access: yesLaboratory Animal Research, 2020
Some drugs cause phototoxicity in humans when exposed to light, thus there is a need for an in vivo phototoxicity test to evaluate them. However, an in vivo phototoxicity test method to evaluate this has not been established.
Nam Hee Youn   +7 more
doaj   +1 more source

Phototoxicity of Lumidoxycycline

open access: yesJournal of Investigative Dermatology, 1993
Doxycycline (DOTC) is a photosensitizing drug whose mechanism of phototoxicity is complicated by the large variety of stable photoproducts formed. To assess the role of a DOTC photoproduct, lumidoxycycline (LuDOTC), in the photosensitization mechanism of DOTC, MGH-U1 human bladder carcinoma cells were treated in vitro with either DOTC or LuDOTC, and ...
Gerard Olack   +4 more
openaire   +3 more sources

Practical Implementation of Log-Scale Active Illumination Microscopy [PDF]

open access: yes, 2010
Active illumination microscopy (AIM) is a method of redistributing dynamic range in a scanning microscope using real-time feedback to control illumination power on a sub-pixel time scale.
K. Chu, Kengyeh   +2 more
core   +3 more sources

Cancer targeting with biomolecules: a comparative study of photodynamic therapy efficacy using antibody or lectin conjugated phthalocyanine-PEG gold nanoparticles [PDF]

open access: yes, 2015
The functionalisation of therapeutic nanoparticle constructs with cancer-specific biomolecules can enable selective tumour accumulation and targeted treatment. Water soluble gold nanoparticles (ca.
Allen   +49 more
core   +1 more source

Diazido mixed-amine platinum(IV) anticancer complexes activatable by visible-light form novel DNA adducts [PDF]

open access: yes, 2013
Platinum diam(m)ine complexes, such as cisplatin, are successful anticancer drugs, but suffer from problems of resistance and side-effects. Photoactivatable PtIV prodrugs offer the potential of targeted drug release and new mechanisms of action.
Bancroft   +57 more
core   +1 more source

Mitochondrial dynamics quantitatively revealed by STED nanoscopy with an enhanced squaraine variant probe

open access: yesNature Communications, 2020
Live cell imaging of mitochondrial cristae is challenged by the unsuitability of current fluorescent probes and high phototoxicity. Here the authors develop a squarine variant probe (MitoESq-635) that is capable of longitudinal imaging of cristae with ...
Xusan Yang   +13 more
doaj   +1 more source

PET/PDT theranostics: Synthesis and biological evaluation of a peptide-targeted gallium porphyrin [PDF]

open access: yes, 2015
The development of novel theranostic agents is an important step in the pathway towards personalised medicine, with the combination of diagnostic and therapeutic modalities into a single treatment agent naturally lending itself to the optimisation and ...
Boyle, Ross W.   +3 more
core   +1 more source

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