Effect of humanin analogues on experimentally induced impairment of spatial memory in rats.
Humanin and its analogues have been shown to protect cells against death induced by various Alzheimer's disease genes and amyloid-beta-peptides in vitro: the analogue [Gly14]-humanin has also been shown to be potent in reversing learning and memory impairment induced by scopolamine in mice in vivo. It is important to validate these results by using other behavioral methods. In this study, the effect of [Gly14]-humanin and des-Leu-PAGA, another analogue (0.2 micromol kg(-1), i.p.) on the 3-quinuclidinyl benzilate-induced (2 mg kg(-1), i.p.) impairment of spatial memory in the multiple T-maze in rats has been evaluated. Both peptides reversed the impairment of spatial memory. These results indicate the potential of humanin analogues in modulation of the cholinergic system.
Krejcova
Gabriela
G
Department of Toxicology, Purkyne Military Medical Academy, Trebesská 1575, 500 01 Hradec Králové, Czech Republic. krejcova@pmfhk.cz
Patocka
Jiri
J
Slaninova
Jirina
J
D000595:Amino Acid Sequence; D000818:Animals; D002250:Carbon Radioisotopes; D047908:Intracellular Signaling Peptides and Proteins; D008297:Male; D008569:Memory Disorders / Q000139:chemically induced / Q000188:drug therapy*; D010455:Peptides / Q000008:administration & dosage / Q000138:chemical synthesis* / Q000494:pharmacology*; D011506:Proteins / Q000008:administration & dosage / Q000138:chemical synthesis / Q000494:pharmacology; D051381:Rats; D017208:Rats, Wistar; D012601:Scopolamine; D013329:Structure-Activity Relationship
D002250:Carbon Radioisotopes; D047908:Intracellular Signaling Peptides and Proteins; D010455:Peptides; D011506:Proteins; C427211:humanin; D012601:Scopolamine