Evaluation of Antiviral Activity of
Azadirachta indica (Neem)
Bark Extract against Newcastle Disease Virus
M. Shahid Mahmood1,
H Waqas Amir1, Rao Zahid Abbas2, Bilal Aslam3
and Azhar Rafique4*
1Institute
of Microbiology; 2Department of Parasitology, University
of Agriculture Faisalabad, Pakistan 3Department of Microbiology; 4Department
of Zoology, GC University Faisalabad Pakistan *Corresponding author:
azharrafique96@gmail.com
Abstract
In the present research, the
in-vitro and
in-ovo antiviral activity of Neem (Azadirachta indica)bark
extract against Newcastle disease virus (NDV) was evaluated. Various dilutions
of Azadirachta indica extract were
used against NDV. In-vitro evaluation
was done by performing spot assay and micro-hemagglutination test, while
in-ovo antiviral activity was assessed
by injecting the extracts in 11 days old embryonatedeggs. During in-vitro
evaluation, it was found that the stock solution and 1:2 dilution of Neem bark
extract exhibit antiviral activity but at the same time these concentrations
showed cytotoxic activity as well, while higher dilution (1:8) showed
non-significant antiviral activity. Same was true for
in-ovo evaluation, higher dilutions
showed non-significant activity. Taking together, it may be concluded there was
no significant difference in the antiviral effects of different concentrations
of Neem bark extracts but the exposure time was a significant variable for
cytotoxicity.
To Cite This Article: Mahmood MS, Amir HW, Abbas
RZ, Rafique Aand Aslam B, 2018. Evaluation of antiviral activity of
Azadirachta indica (Neem) bark extract
against Newcastle disease virus. Pak Vet J, 38(1): 25-28.
http://dx.doi.org/10.29261/pakvetj/2018.005