['To determine whether sulfasalazine can prevent apoptosis in spermatogenic cells by preventing the activation of NF-kappaB in spermatogenic epithelium in experimental testicular torsion.', 'Thirty-two adult male Sprague-Dawley rats were subjected to unilateral 720 degree testicular torsion for durations of 0 h and 2 h, then the torsion was relieved. The ischemic/reperfused testes were collected for the detection of NF-kappaB expression with Western blotting and immunohistochemistry techniques, and detection of apoptosis with TUNEL techniques.', 'The NF-kappaB coefficient of spermatogenic epithelium and the apoptosis index of spermatogenic cells were significantly different in the operation and the sham-operation groups after experimental testicular torsion (P<0.01).'] Does sulfasalazine prevent apoptosis in spermatogenic cells after experimental testicular torsion/detorsion?