title: Antifilarial activity of a synthetic marine alkaloid, aplysinopsin (CDRI Compound 92/138).
abstract: CDRI Compound 92/138, a synthetic analogue of aplysinopsin, was evaluated in experimental filarial infections, Litomosoides carinii in cotton rats (Sigmodon hispidus) and Acanthocheilonema viteae in Mastomys coucha. The compound killed 63.8 and 90% of adult L. carinii and A. viteae at doses of 30 and 50 mg/kg (i.p.) respectively given for 5 days. By the oral route, at 100 mg/kg for 5 days the compound caused 50.9 and 57% mortality of adult L. carinii and A. viteae, respectively. At 200 mg/kg administered orally on days 0, 10 and 25 post-infection, it reduced establishment of adult A. viteae by 68.5%. We also found 43.7 and 37.8% effect in vivo respectively on L3 and L4 stages of A. viteae at a single dose of 250 mg/kg, p.o. The compound was active in vitro at 100 micrograms/ml concentration and caused a significant decline in MTT reduction and 14C-glucose uptake by adult filariids. Thus synthetic marine aplysinopsin could provide a new pharmacophore for the development of antifilarial agents.
authors.affiliation: Division of Parasitology, Central Drug Research Institute, Lucknow, India.
authors.forename: S N
authors.initials: SN
authors.lastname: Singh
authors.forename: S
authors.initials: S
authors.lastname: Bhatnagar
authors.forename: N
authors.initials: N
authors.lastname: Fatma
authors.forename: P M
authors.initials: PM
authors.lastname: Chauhan
authors.forename: R K
authors.initials: RK
authors.lastname: Chatterjee
mesh_terms: D000818:Animals; D004154:Dipetalonema Infections / Q000188:drug therapy; D004353:Drug Evaluation, Preclinical; D005368:Filariasis / Q000188:drug therapy*; D005369:Filaricides / Q000494:pharmacology / Q000627:therapeutic use*; D005370:Filarioidea / Q000187:drug effects; D007093:Imidazoles / Q000494:pharmacology / Q000627:therapeutic use*; D007211:Indoles / Q000494:pharmacology / Q000627:therapeutic use*; D008297:Male; D009115:Muridae; D016205:Sigmodontinae
chemical_list: C107106:CDRI 92-138; D005369:Filaricides; D007093:Imidazoles; D007211:Indoles