OBJECTIVE: To explore the dynamic changes of capillary permeability and the expression of VEGF in cerebral cortex after RIBI. METHODS: Male SD rats were randomly divided into the RIBI group and control group, and the RIBI group was randomly subdivided into five groups for analysis on day 1, 3, 7, 14, and 28, respectively. We established an RIBI model, and then evaluated BBB permeability by EB. We also measured the expression of VEGF with IHC stain and western blot. RESULTS: EB extravasation in injured cortex of RIBI group was increased at five time points compared with the control group. The western blot results and IHC revealed that the levels of VEGF expression in the RIBI groups was significantly increased at day 1 compared with the control group, then rose to a maximum at day 7, and subsequently the levels of expression recovered from day 14 to 28. CONCLUSIONS: The increases in both BBB permeability and VEGF expression in the brain cortex of RIBI groups at same time period confirmed the possibility of brain injury following irradiation of 6 Gy.
OBJECTIVE: To explore the dynamic changes of capillary permeability and the expression of VEGF in cerebral cortex after RIBI. METHODS: Male SD rats were randomly divided into the RIBI group and control group, and the RIBI group was randomly subdivided into five groups for analysis on day 1, 3, 7, 14, and 28, respectively. We established an RIBI model, and then evaluated BBB permeability by EB. We also measured the expression of VEGF with IHC stain and western blot. RESULTS:EB extravasation in injured cortex of RIBI group was increased at five time points compared with the control group. The western blot results and IHC revealed that the levels of VEGF expression in the RIBI groups was significantly increased at day 1 compared with the control group, then rose to a maximum at day 7, and subsequently the levels of expression recovered from day 14 to 28. CONCLUSIONS: The increases in both BBB permeability and VEGF expression in the brain cortex of RIBI groups at same time period confirmed the possibility of brain injury following irradiation of 6 Gy.
Authors: Joseph M Caster; Stephanie K Yu; Artish N Patel; Nicole J Newman; Zachary J Lee; Samuel B Warner; Kyle T Wagner; Kyle C Roche; Xi Tian; Yuanzeng Min; Andrew Z Wang Journal: Nanomedicine Date: 2017-03-11 Impact factor: 5.307
Authors: Jacqueline P Williams; Laura Calvi; Joe V Chakkalakal; Jacob N Finkelstein; M Kerry O'Banion; Edward Puzas Journal: Radiat Res Date: 2016-06-22 Impact factor: 2.841