Results 171 to 180 of about 8,717 (218)
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PHOTODYNAMIC INACTIVATION OF CHINESE HAMSTER CELLS
Photochemistry and Photobiology, 1983Abstract— Visible light exposures have been shown to kill acriflavine bound Chinese hamster cells. Such killing was enhanced when (a) dye was present in the medium during irradiation and (b) the pH of the medium was 8.5, instead of the normal 7.5 during the exposure.
T, Ganguly, S B, Bhattacharjee
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Dye‐sensitized photodynamic inactivation of cells
Medical Physics, 1981Living cells may be modified in diverse ways by the combined action of visible light and photosensitizing molecules. The effects appear most frequently as disruptions of subcellular structure, changes in surface membrane function or inhibition of mitotic ability. This review concentrates on the four most thoroughly studied cell types—yeast cells, nerve
J P, Pooler, D P, Valenzeno
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Buckminsterfullerene and photodynamic inactivation of viruses
Reviews in Medical Virology, 1998The development of new virus inactivation procedures has become an area of growing interest mainly due to increased demands concerning the safety of biological products. Photochemical processes represent the most promising methods for the future to inactivate viruses. In these methods, dyes are the most widely used photosensitising reagents.
, Käsermann, , Kempf
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Photodynamic Inactivation of Infectious Nucleic Acid
Science, 1960Tobacco mosaic virus-infectious nucleic acid causes a color shift when combined with acridine orange, methylene blue, and safranine. A high concentration of acridine orange inactivates infectious nucleic acid even in darkness, while a mixture of nucleic acid with a low concentration of the dye must be exposed to visible light prior to inoculation for ...
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Porphyrinoid photosensitizers mediated photodynamic inactivation against bacteria
European Journal of Medicinal Chemistry, 2019The multi-drug resistant bacteria have become a serious problem complicating therapies to such a degree that often the term "post-antibiotic era" is applied to describe the situation. The infections with methicillin-resistant S. aureus, vancomycin-resistant E. faecium, third generation cephalosporin-resistant E.
Lukasz Sobotta +3 more
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Photodynamic Inactivation of Infectious Agents
Journal of the Environmental Engineering Division, 1977The photodynamic inactivation of poliovirus by use of the photoreactive dye methylene blue at pH 10 and monochromatic lights was investigated on a continuous flow basis. The photodynamic inactivation process was effective for virus inactivation in clarified wastewater and requires various unit operations that are inherent to both the tertiary treatment
M. Floyd Hobbs +4 more
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Photodynamic inactivation and its repair in mycoplasmas
Biochimica et Biophysica Acta (BBA) - General Subjects, 1978Photodynamic inactivation is the loss in viability observed when organic dye-treated cells are exposed to visible light and molecular oxygen. The photodynamic inactivation of mycoplasmas, the smallest free living cells, has been studied. Depending on the extent of inactivation in Acholeplasma laidlawii, photodynamic induced damage can be repaired if ...
U, Chaudhuri, J, Das, J, Maniloff
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Reactivation of photodynamically inactivated lambda phages
Molecular and General Genetics MGG, 1968UV-irradiated λc phages show a lower survival when plated on rec −-cells as compared to rec +-cells. Photodynamically inactivated λc phages show the lowest survival on hcr −; rec −-cells. The rec-functions do not influence the repair of UV- or photodynamically induced lesions in T1 phages.
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Light sources for photodynamic inactivation of bacteria
Lasers in Medical Science, 2008Bacteria have an important role in human and animal morbidity, and a great number of them have developed antibiotic resistance. In the past recent years a new way of dealing with this problem has been studied: photodynamic inactivation. This method is based on administration of a photosensitizing substance that fixes itself in the bacterial cell ...
Mihaela Antonina, Calin, S V, Parasca
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Photodynamic inactivation of viruses using upconversion nanoparticles
Biomaterials, 2012Photodynamic therapy (PDT) is a promising treatment modality that utilizes light of an appropriate wavelength to excite photosensitive materials called photosensitizers, which upon excitation, generate reactive oxygen species (ROS) that are cytocidal and virucidal.
Lim, Meng Earn +3 more
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