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Abstract

The present invention pertains to the use of inhibitors of phosphodiesterase I, IV and V for the prophylaxis and treatment of prostatic diseases, in particular the use of a) 2-(2-propoxy-phenyl)-8-azapurin-6-one (zaprinast); b) dipyridamole; c) 1-(3-chlorophenylamino)-4-phenylphthalazine (M5445); d) 2-(N-(4-carboxypiperidine-6-chloro-4-(3,4-(methylendioxy)benzyl)amino)q-uinazoline (E 4021, ER 21355); e) 2,3-dihydro-8-hydroxy-7-nitro-1,4-benzodioxine-2-methanol, alpha-nitrate (E 4701); f) 4-((3,4-(methylendioxy)benzyl)amino)-6,7,8-trimethoxyquinazoline; g) 1-methyl-3-propyl-6-(5-(N-(4-methylmorpholino)sulfonyl)-2-ethoxyphenyl)-pyrazole[4,5]pyrimidin-4(5H)one (sildenafil); i) 1-cyclopentyl-3-methyl-6-(4-pyridinyl)pyrazolo (3,4-d)pyrimidin-4(5H)-o-ne (WIN 58237); j) 7-(3-(4-acetyl-3-hydroxy-2-propyl-phenoxy)-2-hydroxy-propoxy)-2 -carboxy-2,3-didehydro-chronan-4-one (FPL-557212) k) quinazolines and their trimethoxy derivatives; l) Pyrazolopyrimidones; as well as pharmacologically compatible salts thereof, quinazolines and their trimethoxy derivatives, pyrazolopyrimidones or compatible salts thereof, in local and systemic administration

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