Table I.

Phase transition temperatures and rheological properties of different strategies.

Groups	Tgel (°C)c	Storage modulus (Pa)d
Free gela	21.6±1.2	812
Gel+CDb	19±2.0	881
Gel+CUR	17.6±1.2	1,206
Gel+DOX	21±2.0	1,009
Gel+CD-CUR	19.6±1.2	1,077
Gel+DOX+CD-CUR	18.3±1.2	1,392

^aThe concentration of PLGA-PEG-PLGA hydrogel was 20% wt;

^bThe dose of each trapped drug in hydrogel was 1 mg/ml;

^cSol-gel transition temperature evaluated by the vial inversion method;

^dEvaluated by the rheometer. CD-CUR, β-cyclodextrin curcumin; DOX, doxorubicin.