title: Assessment of the phytochemical and antitrypanosomal properties of some extracts of leaves, stem and root bark of Landolphia sp., P. Beauv.
abstract: INTRODUCTION/JUSTIFICATION: There is urgent need to source for alternative chemotherapy against trypanosmosis, a disease of major importance in human and economic animals.
  
  
  METHODS
  Therefore, petroleum ether, chloroform, methanol and aqueous extracts sequentially obtained from the leaves, stem and root barks of Landolphia uniflora were evaluated for their in vitro and in vivo antitrypanosomal activities against Trypanosoma brucei brucei, as well as their phytochemical constituents.
  
  
  RESULTS
  Steroids and triterpenes, resins, tannins, saponins and flavonosides were detected in almost all the extracts, but alkaloid was absent in methanol extract of the stem and stem, as well as the chloroform extract of the root bark. In vitro, all extracts of the roots displayed significant antitrypanosomal activity, while only the chloroform extracts of the leaves and stem bark showed activity at both test concentrations (4 and 2 mg/ml). However, under in vivo condition, the methanol extracts showed the greatest activity, eliminating parasitaemia within the 10 days treatment period and prolonging survival period at 200 and 300 mg/kg body weight intramuscular doses.
  
  
  CONCLUSIONS
  These results suggest that Landolphia uniflora could be useful in the management of trypanosomiasis.
authors.affiliation: Biochemistry Department, Ahmadu Bello University, Zaria, Nigeria. atawodi_se@yahoo.com
authors.forename: S E
authors.initials: SE
authors.lastname: Atawodi
authors.forename: A A
authors.initials: AA
authors.lastname: Alafiatayo
mesh_terms: D000818:Animals; D029062:Apocynaceae / Q000737:chemistry*; D002725:Chloroform; D004987:Ethers; D000432:Methanol; D051379:Mice; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012997:Solvents; D014344:Trypanocidal Agents / Q000737:chemistry / Q000494:pharmacology*; D014346:Trypanosoma brucei brucei / Q000187:drug effects*; D014352:Trypanosomiasis / Q000188:drug therapy / Q000469:parasitology; D014867:Water
chemical_list: D004987:Ethers; D010936:Plant Extracts; D012997:Solvents; D014344:Trypanocidal Agents; D014867:Water; D002725:Chloroform; D000432:Methanol