ZfN: Search Results

1	Author	P. Ries, R. Beiderbeck	Requires cookie*
	Title	Photosensibilisierung isolierter Mesophyllzellen von Calystegia sepium L. Photosensibilization o f Isolated Mesophyll Cells of Calystegia sepium L
	Abstract	Cell division of isolated mesophyll cells o f Calystegia sepium can be made sensitive to long-wave UV (LUV) by treatment with 8-methoxypsoralen (8-MP). The inhibition o f cell division de pends on 8-MP concentration and the length o f light exposure. Only the simultaneous presence of 8-MP and LUV gives effective photosensibilization. Cells treated with 8-MP in the dark can be made non-sensitive to LUV by washing out the furocoumarin prior to irradiation. The furocou marins may offer a means o f cell selection.
	Reference	Z. Naturforsch. 34c, 1215—1217 (1979); eingegangen am 2. August 1979
	Published	1979
	Keywords	Photosensibilization, Furocoumarins, Plant Cells, Cell Division
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	TEI-XML for	default:Reihe_C/34/ZNC-1979-34c-1215.pdf
	Identifier	ZNC-1979-34c-1215
	Volume	34

2	Author	Daniela Vedaldi, Sergio Caffieri, Giorgia Miolo, Francesco Dall 'acqua, Paola Arslan	Requires cookie*
	Title	Dark and Photohemolysis of Erythrocytes by Furocoumarins
	Abstract	It has been shown that various furocoumarins are able to cause dark hemolysis in red blood cells (RBC). However, this effect is evident only at relatively high furocoumarin concentrations (4.6 x 10~ 4 M) -much higher than those used in photosensitization experiments or photo-chemotherapeutic treatments. Among the various furocoumarins examined in this study, only psoralen (Ps) and 3-carbethoxy-psoralen (3-CPs) showed strong photohemolytic effects, while the other compounds revealed little or no activity. This fact indicates that Ps and 3-CPs are able to induce selective damage to the cell membrane of RBC. By pre-irradiating furocoumarin in ethanol or isotonic saline solutions and adding the irradiated solutions to a RBC suspension, hemolysis was observed in various compounds. The products of photolysis which form during pre-irradiation may be responsible, in terms of hemolysis, for toxic effects on RBC.
	Reference	Z. Naturforsch. 43c, 888—892 (1988); received August 2 1988
	Published	1988
	Keywords	Furocoumarins, Hemolysis, Photosensitization, Cell Membrane Damage, Photochemotherapy
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	TEI-XML for	default:Reihe_C/43/ZNC-1988-43c-0888.pdf
	Identifier	ZNC-1988-43c-0888
	Volume	43

3	Author	L. Ucia, B. Ovalini, Paola Lusini, Sandra Sim, D. An, Ie La, V. Edaldi, LucioA. Ndreassi, F. Rancesco, D. All, '. A. Cqua, PaolaM. Artelli	Requires cookie*
	Title	Inhibition of cAMP Phosphodiesterase by Some Phototherapeutic Agents
	Abstract	The behaviour of cyclic-3',5'-AMP phosphodiesterase has been studied in the presence of psoralen, 8-methoxy-psoralen (8-MOP), 4,5',8-trimethylpsoralen (TMP) (usu ally used in PUVA therapy), 4.6,4'-trimethylangelicin (TM A) and khellin recently proposed for the same thera peutical use. TMP and TMA exhibit a significant inhibitory effect on cyclic AMP phosphodiesterase; a light inhibition is produced by khellin at rather high concentration.
	Reference	Z. Naturforsch. 42c, 1009—1010 (1987); received February 4 1987
	Published	1987
	Keywords	Cyclic AMP Phosphodiesterase, Furocoumarins, Furo-chromones, PUVA Therapy, Psoriasis
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	TEI-XML for	default:Reihe_C/42/ZNC-1987-42c-1009_n.pdf
	Identifier	ZNC-1987-42c-1009_n
	Volume	42

4	Author	F. M. Veronese, 0. Schiavon, R. Bevilacqua, G. Rodighiero	Requires cookie*
	Title	Drug-Protein Interaction: 8-Methoxy Psoralen as Photosensitizer of Enzymes and Amino Acids
	Reference	Z. Naturforsch. 34c, 392 (1979); received August 3 1978
	Published	1979
	Keywords	8-Methoxy-psoralen, Furocoumarins, Photochemotherapy, Photosensitization of Amino Acids and Proteins, Drug-Protein Interaction
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	TEI-XML for	default:Reihe_C/34/ZNC-1979-34c-0392.pdf
	Identifier	ZNC-1979-34c-0392
	Volume	34