title: Y-29794--a non-peptide prolyl endopeptidase inhibitor that can penetrate into the brain.
abstract: A novel non-peptide prolyl endopeptidase (PPCE) inhibitor, Y-29794, has been identified. Y-29794 selectively and competitively inhibited rat brain PPCE (Ki = 0.95 nM) in a reversible manner. Ex vivo study demonstrated that Y-29794 could penetrate into brain to exhibit dose-dependent and long-lasting inhibition. Furthermore, Y-29794 was found to potentiate the effect of TRH on the release of ACh in the rat hippocampus. These results indicate that Y-29794 is an orally active, potent and specific PPCE inhibitor and should be of value in studies on the physiological role of the enzyme in neuropeptide metabolism especially in memory process.
authors.affiliation: Research Laboratories, Yoshitomi Pharmaceutical Industries, Ltd., Fukuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nakajima
authors.forename: Y
authors.initials: Y
authors.lastname: Ono
authors.forename: A
authors.initials: A
authors.lastname: Kato
authors.forename: J
authors.initials: J
authors.lastname: Maeda
authors.forename: T
authors.initials: T
authors.lastname: Ohe
mesh_terms: D000109:Acetylcholine / Q000378:metabolism; D000818:Animals; D001667:Binding, Competitive; D001682:Biological Availability; D001921:Brain / Q000378:metabolism*; D006624:Hippocampus / Q000378:metabolism; D007659:Ketones / Q000737:chemistry / Q000493:pharmacokinetics*; D000085822:Prolyl Oligopeptidases; D051381:Rats; D012697:Serine Endopeptidases; D013876:Thiophenes / Q000737:chemistry / Q000493:pharmacokinetics*; D013973:Thyrotropin-Releasing Hormone / Q000494:pharmacology; D014018:Tissue Distribution
chemical_list: D007659:Ketones; D013876:Thiophenes; C077994:Y 29794; D013973:Thyrotropin-Releasing Hormone; D012697:Serine Endopeptidases; D000085822:Prolyl Oligopeptidases; D000109:Acetylcholine