PMID- 24278883 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20131126 LR - 20211021 IS - 2288-176X (Print) IS - 2288-1778 (Electronic) IS - 2288-176X (Linking) VI - 9 IP - 3 DP - 2013 TI - Treadmill exercise inhibits apoptotic neuronal cell death with suppressed vascular endothelial growth factor expression in the retinas of the diabetic rats. PG - 348-53 LID - 10.12965/jer.130043 [doi] AB - Diabetic retinopathy is one of the most important microvascular complications in diabetes, and it is the major cause of visual loss. Physical exercise is known to ameliorate the symptoms of metabolic syndromes such as diabetic mellitus. In the present study, we investigated the effects of treadmill exercise on vascular endothelial growth factor (VEGF) expression and apoptotic cell death in the retinas of streptozotocin (STZ)-induced diabetic rats. The male Sprague-Dawley rats were randomly divided into three groups (n = 10 in each group): control group, STZ-induce diabetes group, STZ-induced diabetes and treadmill exercise group. To induce diabetes in the experimental animals, a single intraperitioneal injection of STZ (50 mg/kg) was given to each animal. The rats in the exercise group were forced to run on a motorized treadmill for 30 min once a day during 1 week starting 6 weeks after STZ injection. In the present results, VEGF expression in the retinas was increased by induction of diabetes. The numbers of caspase-3-positive and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL)-positive cells in the retinas were also enhanced by induction of diabetes. Treadmill exercise significantly decreased VEGF expression and suppressed the number of TUNEL-positive and caspase-3-positive cells in the retinas of diabetic rats. In the present study, we have shown that treadmill exercise might alleviate the progression of diabetic retinopathy through suppressing VEGF expression and apoptotic cell death in the retinas of the diabetic rats. FAU - Ji, Eun-Sang AU - Ji ES AD - Department of Sport & Health Science, College of Natural Science, Sangmyung University, Seoul, Korea. FAU - Ko, Il-Gyu AU - Ko IG FAU - Cho, Jung-Wan AU - Cho JW FAU - Davis, Ronald W AU - Davis RW FAU - Hwang, Gwang-Yon AU - Hwang GY FAU - Jee, Yong-Seok AU - Jee YS FAU - Lim, Baek-Vin AU - Lim BV LA - eng PT - Journal Article DEP - 20130630 PL - Korea (South) TA - J Exerc Rehabil JT - Journal of exercise rehabilitation JID - 101615171 PMC - PMC3836530 OTO - NOTNLM OT - Apoptosis OT - Diabetic retinopathy OT - Streptozotocin OT - Vascular endothelial growth factor EDAT- 2013/11/28 06:00 MHDA- 2013/11/28 06:01 PMCR- 2013/07/30 CRDT- 2013/11/27 06:00 PHST- 2013/06/07 00:00 [received] PHST- 2013/06/14 00:00 [revised] PHST- 2013/06/23 00:00 [accepted] PHST- 2013/11/27 06:00 [entrez] PHST- 2013/11/28 06:00 [pubmed] PHST- 2013/11/28 06:01 [medline] PHST- 2013/07/30 00:00 [pmc-release] AID - jer-9-3-3-348_353 [pii] AID - 10.12965/jer.130043 [doi] PST - epublish SO - J Exerc Rehabil. 2013 Jun 30;9(3):348-53. doi: 10.12965/jer.130043. eCollection 2013.