Behavioural characterization of four endemic Stachys taxa.
We performed a basic behavioral characterization of methanol extracts of four Balkan endemic Stachys taxa: S. anisochila (SA), S. beckeana (SB), S. plumosa (SP) and S. alpina subsp. dinarica (SAD). The behavioral activity of extracts dosed intraperitoneally in the range 100-400 mg/kg was examined in adult male Wistar rats, in the elevated plus maze, spontaneous locomotor activity, and grip strength tests, mainly predictive of anxiolytic, sedative and myorelaxant actions, respectively. All investigated Stachys extracts lacked anxiolytic or myorelaxant activities, while SB at 400 mg/kg exerted an anxiogenic-like effect. The study with the selective antagonist beta-CCt showed that the sedative effect of SAD was only partially mediated by GABAA receptors containing the alpha1-subunit. While discernible, the behavioral effects of SA and SP were not distinct. In all extracts, chlorogenic acid and verbascoside were identified. In SA, SB, and SAD the flavonoid fraction was constituted of isoscutellarein and hypolaetine glycosides, while in SP chrysoeriol and apigenin glycosides were present. The results reveal the psychotropic potential of four endemic Stachys taxa, of which SAD appeared most promising as a natural sedative.
Savić
Miroslav M
MM
Institute of Pharmacology, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia. miroslav@pharmacy.bg.ac.rs
Kukić
Jelena M
JM
Grayer
Renée J
RJ
Milinković
Marija M
MM
Marin
Petar D
PD
Divljaković
Jovana
J
Van Linn
Michael
M
Cook
James M
JM
Petrović
Silvana D
SD
D000818:Animals; D014151:Anti-Anxiety Agents / Q000494:pharmacology* / Q000627:therapeutic use; D001007:Anxiety / Q000188:drug therapy / Q000378:metabolism; D001522:Behavior, Animal / Q000187:drug effects*; D002243:Carbolines / Q000494:pharmacology; D002726:Chlorogenic Acid / Q000494:pharmacology / Q000627:therapeutic use; D004305:Dose-Response Relationship, Drug; D005419:Flavonoids / Q000494:pharmacology / Q000627:therapeutic use; D005960:Glucosides / Q000494:pharmacology / Q000627:therapeutic use; D006993:Hypnotics and Sedatives / Q000494:pharmacology* / Q000627:therapeutic use; D008297:Male; D018782:Maze Learning / Q000187:drug effects; D009043:Motor Activity / Q000187:drug effects; D053580:Muscle Strength / Q000187:drug effects; D010636:Phenols / Q000494:pharmacology / Q000627:therapeutic use; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology* / Q000627:therapeutic use; D051381:Rats; D017208:Rats, Wistar; D011963:Receptors, GABA-A / Q000378:metabolism*; D031366:Stachys / Q000737:chemistry*; D059808:Polyphenols
D014151:Anti-Anxiety Agents; D002243:Carbolines; D002726:Chlorogenic Acid; D005419:Flavonoids; D005960:Glucosides; D006993:Hypnotics and Sedatives; D010636:Phenols; D010936:Plant Extracts; D011963:Receptors, GABA-A; C058956:acteoside; D059808:Polyphenols; C043232:tert-butyl beta-carboline-3-carboxylate