Nigusse Zerihun Tesfaye
Addis Ababa University, Ethiopia
Title: The in vitro effect of methanolic extract to the leaf of Aloe otallensis exudates on the Leishmania ethiopica and Leishmania donovani parasite
Biography
Biography: Nigusse Zerihun Tesfaye
Abstract
Background & Objectives: Several plant products have been tested and found to possess antileishmanial activity. The present study was undertaken to evaluate antileishmanial activity of methanolic extract of Aloe otallensis, which is endemic plant to Ethiopia, on the promastigot stage of Leishmania aethiopica and Leishmania donovani comparing to standard drugs and also tried to screen its phytochemical constituent.
Methods: Phytochemical screening was done on methanolic extract of the exudates to the leaf of Aloe otallensis. The serial dilution of the extract was also evaluated for in vitro antileishmanial activity against Leishmania aethiopica and Leishmania donavani on the strain of L. aethiopica (LDC/134) and L. donovani (AM 563), which is found from the black lion hospital parasitology unit and the result was compared to standard drug of Sodium stibogluconate, milfostin and paramomycin.
Result: The extract has an antileishmaniacidal activity with an IC50 of 141 μg per ml on L. ethiopica (LDC/134) and 123 μg per ml on L. donovani (AM 563). The experimental data shows that relatively it has better activity than paramomycin and milfostin but less activity than sodium stibogluconate, which is given in Ethiopia as a first line drug. The data analyses was done by pad graph prison version 5 software after it was read by ELISA redder at the wave length of 650 nm. The phytochemical screening of the exudates of Aloe otallensis showed the presence of phenol, alkaloid and saponin.
Conclusion: The methanolic extract of exudates of Aloe otallensis has a good antileishmanisis activity relatively to paramomycin and milfostin and this activity may be attributed to phenol, alkaloid and saponin present in the plant. But it needs further analysis for the conformation of which constituent present in much concentration and to know which one have highest role.