title: Skin radioprotection by 5-thio-D-glucose.
abstract: The radioprotective effect of 5-thio-D-glucose on mouse skin was studied. Intraperitoneal injection of A/J mice with 1.5 g/kg of 5-thio-D-glucose 2 hr prior to X irradiation of the foot reduced early foot skin damage through Day 40 postirradiation by a dose modification factor of 1.3 +/- 0.1. Similarly, late foot deformity during Days 60-90 postirradiation was reduced by a factor of 1.2 +/- 0.1. The radioprotective effect of 5-thio-D-glucose was also compared with that of WR-2721, an aminothiol radioprotector, in CDF1 mice. An intraperitoneal injection of 1.5 g/kg of 5-thio-D-glucose reduced early radiation-induced skin damage by a dose modification factor of 1.2 +/- 0.1 as compared to that of 1.5 +/- 0.2 by 0.65 g/kg of WR-2721 in this strain of mice. 5-Thio-D-glucose is also known to specifically kill and radiosensitize hypoxic tumor cells. Consequently, this drug may be a useful radiotherapy adjuvant, reducing normal tissue damage and enhancing tumor control by minimizing hypoxic protection.
mesh_terms: D004999:Amifostine / Q000494:pharmacology; D000818:Animals; D004307:Dose-Response Relationship, Radiation; D005260:Female; D005531:Foot Deformities, Acquired / Q000209:etiology; D005947:Glucose / Q000031:analogs & derivatives* / Q000494:pharmacology; D007274:Injections, Intraperitoneal; D008297:Male; D051379:Mice; D011832:Radiation Injuries / Q000209:etiology; D011837:Radiation-Protective Agents / Q000494:pharmacology*; D012867:Skin / Q000187:drug effects* / Q000528:radiation effects; D013997:Time Factors
chemical_list: D011837:Radiation-Protective Agents; C003002:5-thio-D-glucose; D005947:Glucose; D004999:Amifostine