The release profiles of gentamicin from niosomes
prepared with Tween 80 reveal that the presence of cholesterol
in the niosomes stabilizes the bilayers and decreases
their permeability. However, contrary to previous results,
increase in cholesterol molar ratio from 1:0.5 to 1:1 in absence of DCP gradually reduces the permeability (F5 and F6).
Upon incorporation of DCP, increase in cholesterol molar
ratio from 0.5 to 1 (F7 and F8) showed increase in vesicle
permeability
It is to be noted that the in vitro release results are
consistent with those of the entrapment efficiency, as the
niosomes composed of Tween 60, cholesterol and DCP
(1:1:0.1) molar ratio with the highest entrapment efficiency
(92.02%) showed the lowest drug release percent after 8 h
(Q8h=66.29%). The comparative release data indicate that,
by encapsulation of drug into niosomes, it is possible to
sustain and control the release of the drug for a longer
duration (22).
The release profiles of gentamicin from niosomes
prepared with Tween 80 reveal that the presence of cholesterol
in the niosomes stabilizes the bilayers and decreases
their permeability. However, contrary to previous results,
increase in cholesterol molar ratio from 1:0.5 to 1:1 in absence of DCP gradually reduces the permeability (F5 and F6).
Upon incorporation of DCP, increase in cholesterol molar
ratio from 0.5 to 1 (F7 and F8) showed increase in vesicle
permeability
It is to be noted that the in vitro release results are
consistent with those of the entrapment efficiency, as the
niosomes composed of Tween 60, cholesterol and DCP
(1:1:0.1) molar ratio with the highest entrapment efficiency
(92.02%) showed the lowest drug release percent after 8 h
(Q8h=66.29%). The comparative release data indicate that,
by encapsulation of drug into niosomes, it is possible to
sustain and control the release of the drug for a longer
duration (22).
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