title: Comparison of hypotensive and hypolipidemic effects of Catharanthus roseus leaves extract with atenolol on adrenaline induced hypertensive rats.
abstract: The leaves extract of Catharanthus roseus was investigated for hypotensive and hypolipidemic effects in adrenaline-induced hypertensive rats (AIHR) and compared with those of Atenolol in a crossover design. The pharmacologically Active components responsible for hypotensive activities were isolated from plant using bioassay guided purification approach and the structure of the compounds was proposed by spectroscopic methods. Catharanthus roseus leaves extract and commercial drug Atenolol were administered through intraperitoneal (i.p) route for one week. Different biochemical parameters such as heart weight, blood glucose level, serum cholesterol level, serum triglyceride level, body weight and the relationships between them were measured. Catharanthus roseus leaves extract at a dose of 30 mg/155+/-15 gm of body weight was injected in rat at every morning during the treatment period. The dose of Atenolol was determined according to its pharmacokinetic parameters. Clinically effective plasma concentration as a hypotensive drug was obtained after the injection of 0.1 mg/155+/-15 gm of body weight of the drug. The Catharanthus roseus leaves extract made significant changes in each cardiovascular parameter after investigation. Catharanthus roseus leaves extract treated animals have shown the hypotensive effects. Hypotensive effects were also shown by Atenolol.
authors: Department of Pharmacy, Faculty of Science, University of Rajshahi, Rajshahi 6205, Bangladesh.
authors: Naznin
authors: N
authors: Ara
authors: Mamunur
authors: M
authors: Rashid
authors: Md Shah
authors: MS
authors: Amran
mesh_terms: D000818:Animals; D000959:Antihypertensive Agents / Q000494:pharmacology / Q000627:therapeutic use*; D001262:Atenolol / Q000494:pharmacology / Q000627:therapeutic use*; D001786:Blood Glucose / Q000378:metabolism; D001794:Blood Pressure / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D030008:Catharanthus / Q000737:chemistry*; D018592:Cross-Over Studies; D004305:Dose-Response Relationship, Drug; D004837:Epinephrine; D006321:Heart / Q000187:drug effects; D006949:Hyperlipidemias / Q000188:drug therapy; D006973:Hypertension / Q000139:chemically induced / Q000188:drug therapy*; D000960:Hypolipidemic Agents / Q000494:pharmacology / Q000627:therapeutic use*; D007274:Injections, Intraperitoneal; D008055:Lipids / Q000097:blood; D009929:Organ Size / Q000187:drug effects; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology / Q000627:therapeutic use; D018515:Plant Leaves / Q000737:chemistry; D051381:Rats
chemical_list: D000959:Antihypertensive Agents; D001786:Blood Glucose; D000960:Hypolipidemic Agents; D008055:Lipids; D010936:Plant Extracts; D001262:Atenolol; D004837:Epinephrine