Results 301 to 310 of about 13,390 (349)
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[Exogenous photosensitizing agents].
La Revue du praticien, 1992The frequent use of remedies either in topical or systemic form has led to a rising number of photosensitizations. The different cutaneous manifestations of exogenous photosensitizers e.g. phototoxicity and photoallergy, are described. We treat the most important agents of these reactions and lay stress upon the patient's interview and the phototesting
C, Loesche, O, Podglajen, P, Thomas
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SPECTROSCOPIC STUDIES OF CUTANEOUS PHOTOSENSITIZING AGENTS. XVII. BENZANTHRONE
Photochemistry and Photobiology, 1992Abstract—The photochemistry of benzanthrone (7H‐benz[de]‐anthracene‐7‐one) has been studied using electron paramagnetic resonance (EPR) in conjunction with the spin trapping technique and the direct detection of singlet molecular oxygen luminescence.
R, Dabestani +3 more
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Preclinical Evaluation Of Photosensitizing Agents
SPIE Proceedings, 1989Methods for the pre-clinical evaluation of new photosensitizing dyes are described. The resulting information can provide useful leads concerning likely modes and sites of localization. But correlations between results obtained in cell culture and in animal tumor models are sufficiently weak to indicate the need for caution in extrapolation of any in ...
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SPECTROSCOPIC STUDIES OF CUTANEOUS PHOTOSENSITIZING AGENTS. XVIII. INDOMETHACIN
Photochemistry and Photobiology, 1993Abstract—The photochemistry, photophysics, and photosensitization (Type I and II) of indomethacin (IN) (N‐[p‐chlorobenzoyl]‐5‐methoxy‐2‐methylindole‐3‐acetic acid) has been studied in a variety of solvents using NMR, high performance liquid chromatography‐mass spectroscopy, transient spectroscopy, electron paramagnetic resonance in conjunction with the
R, Dabestani +4 more
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Photosensitizers as virucidal agents.
Journal of photochemistry and photobiology. B, Biology, 1993The photosensitizer, benzoporphyrin derivative monoacid ring A (BPD-MA) has been studied regarding its ability to destroy enveloped viruses in blood and blood products when activated by light. Its maximum wavelength of absorption (690 nm) has proven useful in terms of activation of the photosensitizer in materials containing red blood cells ...
J, North, H, Neyndorff, J G, Levy
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Free Radical Biology and Medicine, 1988
Single-strand breaks can be introduced into PM2 closed-circular DNA upon illumination with blue light, in the presence of the anthrapyrazole antitumor agent, compound 1. Damage is observed already after 1 min of blue light illumination, and is significantly enhanced by the presence of electron donors such as NADH, ascorbic acid or Fe(III)/EDTA complex.
J A, Hartley, K, Reszka, J W, Lown
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Single-strand breaks can be introduced into PM2 closed-circular DNA upon illumination with blue light, in the presence of the anthrapyrazole antitumor agent, compound 1. Damage is observed already after 1 min of blue light illumination, and is significantly enhanced by the presence of electron donors such as NADH, ascorbic acid or Fe(III)/EDTA complex.
J A, Hartley, K, Reszka, J W, Lown
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IS PENICILLIN A PHOTOSENSITIZING AGENT?
Archives of Dermatology, 1945It is a well known fact that penicillin therapy produces few reactions. Urticaria seems to be the most common cutaneous reaction. In this report the possibility is suggested that penicillin acts as a photosensitizing agent. Photodermatitis of vegetable origin has already been well studied.1It is due in most instances to external contact of the patient
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Journal of Free Radicals in Biology & Medicine, 1986
A novel anthrapyrazole anticancer agent has been examined for photosensitizing properties. Illumination of the anthrapyrazole and ascorbic acid with blue light in aerated aqueous solutions causes SOD and catalase-sensitive oxygen consumption, indicating involvement of both superoxide radical and hydrogen peroxide in this process.
K, Reszka, P, Kolodziejczyk, J W, Lown
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A novel anthrapyrazole anticancer agent has been examined for photosensitizing properties. Illumination of the anthrapyrazole and ascorbic acid with blue light in aerated aqueous solutions causes SOD and catalase-sensitive oxygen consumption, indicating involvement of both superoxide radical and hydrogen peroxide in this process.
K, Reszka, P, Kolodziejczyk, J W, Lown
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TREATMENT OF PSORIASIS WITH PHOTOSENSITIZING AGENTS
Archives of Dermatology and Syphilology, 1941The sun's rays appear to be valuable in the treatment of psoriasis, and in most cases the condition improves during the summer months. In many cases of extensive lesions with indurated plaques and in cases in which the condition becomes aggravated rather than improved in the summer, it is possible that the skin is not photosensitive.
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Eradication of Acinetobacter baumannii by photosensitized agents in vitro
Journal of Photochemistry and Photobiology B: Biology, 1998The photodynamic effects of photosensitizers on Acinetobacter baumannii were studied. These Gram negative bacteria have recently been implicated in various infections, mainly acquired in hospitals. They have outstanding characteristics of multidrug high resistance to antimicrobial agents. The best photodynamic effect was obtained when A.
Y, Nitzan +2 more
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