Prevention of benign esophageal stent restenosis : an animal experiment
10.3760/cma.j.issn.1007-5232.2014.01.010
- VernacularTitle:预防良性再狭窄食管支架的动物实验研究
- Author:
Jian JING
;
Zhen GAN
;
Guangyu ZHU
;
Yonglin QIN
;
Jian LU
;
Gaojun TENG
;
Jinhe GUO
- Publication Type:Journal Article
- Keywords:
125Ⅰ seeds;
Esophageal stent;
Benign restenosis
- From:
Chinese Journal of Digestive Endoscopy
2014;31(1):37-41
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the feasibility and preventive effect of benign esophageal restenosis by binding 125I seeds to upper esophageal stent through animal experiments.Methods Eight 125I seeds were evenly bound to upper normal esophageal stents for the animal experiments.A total of 32 beagle dogs were randomly assigned to 2 groups:experimental group,implanted with esophageal stents with eight 125I seeds (33.3 MBq),and the control (stents without 125I seeds).Four dogs of each group were killed at the 1 st,2nd,4th,and 8th week after imaging studies.The tissue of 2 cm upper stent underwent pathology analysis.Results All the novel stents were successfully implanted.No radioactive leak was detected by ECT.The lumen diameter of the top stent showed the tract gradually narrowed and at the 4th and 8th weeks,the experiment group narrowed more seriously compared with the control group and the difference was statistically significant (P ＜ 0.05).PCNA,ot-SMA mean optical density were significantly different in the 4th week.Both hydroxyproline and total amino acid increased progressively,with significant difference at the 4th and 8th weeks.The macroscopic and optical findings of the trachea and major vessels were basically the same in both groups.Conclusion The novel stent is feasible and safe for preventing benign esophageal restenosis and preventing benign esophageal stent restenosis.
