ABSTRACT

Insulin-dependent diabetes mellitus (IDDM) is considered to be an autoim­ mune disease (1,2). Recent reports suggest that reactive oxygen species (ROS) participate in the development of IDDM (3,4). Thioredoxin (TRX) is a small (12 kDa) reduction/oxidation (redox) protein (5,6) and has protective effects on cells against oxidative stress by scavenging ROS (5-7), by repairing DNA and proteins damaged by ROS (5-8), and by blocking apoptosis induced by ROS (6,9).