Effects of matrine on filtering bleb scarring after trabeculectomy in rabbit eyes / 眼科新进展

ABSTRACT

Objective To study the inhibitive effects of matrine on the formation of glaucoma filtration bleb scar.Methods A total of 40 New Zealand white rabbit were chosen and randomly divided into four groups(group A,B,C and D).Both eyes in four groups were treated with glaucoma filtration surgery.The cotton pieces under the sclera flap were made:1.0 g · L-1 matrine cotton piece in group A,0.4 g · L-1 matrine cotton piece in group B,0.2 mg · L-1 mitomycin cotton piece in group C and PBS cotton piece in group D.The intraocular pressure,filtering bleb,anterior chamber reaction and complications were observed at preoperative and postoperative 1 day,3 days,7 days,14 days,28 days in all groups.Two rabbits selected randomly from every group were killed at 1 day,3 days,7 days,14 days and 28 days after surgery.Tissue was harvested from the bleb area and made into pathological section,immunestaining and Masson trichromatic dyeing were used to observe the inflammatory cells,collagen,fibroblasts,the change of muscle fibroblasts and new collagen fibers under light microscope.The cornea was observed at 7 days under transmission electron microscope for drug toxic reaction,Results At postoperative 7 days,14 days,28 days,there were statistical difference in IOP between group A,B,C and group D group (P ＜ 0.05),and there were statistical difference between group A and group B (P ＜ 0.05).At postoperative 7 days,14 days,28 days,there were statistical difference in fibroblasts counting between group A,B,C and group D group (P ＜0.01),and there were statistical differences between group A and group B (P ＜ 0.05).Conclusion Matrine can inhibit fibroblasts hyperplasia,reduce the scar of filtration area and has no side effects on eye tissues.