Zolidronic
Acid
The
effects of gamma irradiation at ambient temperature at a dose of 25 kGy on the
stability of potassium clavulanate, amoxicillin sodium and their combination as
powders were investigated. A decrease in purity and increase in degradation
products up to 30 days after the irradiation were evaluated by reversed phase
HPLC. A comparison between unirradiated and irradiated amoxicillin sodium,
performed within 24 h following the irradiation process, showed no significant
changes.
Paclitacil
injection
The
effect of ionizing radiation on clarithromycin powder was investigated. HPLC
analysis confirms its stability at 2 and 5 kGy radiation doses with no observed
degradation products. However, at 25 kGy, the antimicrobial activity was
reduced by 1.27%, and an unacceptable increase of a single impurity was
observed.
Azithromycin
The
influence of gamma irradiation (up to 25 kGy) on the physicochemical properties
of the NSAIDs, naproxen sodium and diclofenac sodium, when incorporated in PLGA
microspheres. Drug loading of irradiated and non-irradiated microspheres was
essentially the same. A significant difference was noticed, however, between
particle sizes of the irradiated and non-irradiated formulations. In release
studies, the amount of active substance released from PLGA microspheres.
Enzymes
and proteins
The
effect of gamma irradiation (25 kGy) on peptide-containing hydrophilic PLGA
microspheres, showed that on the basis of HPLC analysis, the peptide content of
the microspheres was lowered. In-vivo evaluation, however, of the
non-irradiated and the 15 kGy irradiated microspheres showed no marked
differences.
Carbohydrates
The
effects of irradiation on various carbohydrates both in the solid phase and in
aqueous solution. A method for radiation sterilization of certain sugars,
particularly aqueous dextrose solution, by gamma irradiating over an extended
time period of not less.
Anticancer drugs
Eelectron
beam irradiation of the anticancers, flutamide, ifosfamide and
aminoglutethimide in microcrystalline form, two species identified in flutamide
were assigned to a more stable tertiary carbon-centred radical, and a less
stable aryl radical or nitrogen-centred radical cation. Two components were
found in if osfamide with one being the radical formed on the loss of a
chlorine atom.