Figure 4: In vitro studies of chemo- radiotherapy.
A) Release profile of fluorescence from chitosan hydrogels loaded with free FITC or BSA-FITC, and BSA-FITC encapsulated in alginate microparticles (mAlg) and incorporated in chitosan hydrogels for 42 days (n=3). B) Percent of radioactive leakage of 131I-HSA out of 75mg/ml alginate microparticles loaded inside ct hydrogels for 42 days (n=3). Note insert that shows minimal (less than 1%) radioactive leakage. C) Drug release profile from chitosan hydrogels loaded with temozolomide (TMZ) for 48 hours (n=3). D) The effect of TMZ concentrations (0 – 100 μM) of free-drug or TMZ-hydrogels for three days on the survival of D54 cells analyzed by MTT (n=3).