Effects of avastin combined with As2 O3 on rabbits corneal neovascularization induced by alkali burn / 中国基层医药

ABSTRACT

Objective To investigate the effects of avastin combined with As2 O3 on rabbits corneal neovas-cularization (CNV)induced by alkali burn.Methods A total of 48 Japanese rabbits were induced the CNV models by middle alkali burns.The rabbits were randomly divided into four groups.A group was subconjunctivally injected 0.5mL 1mg/mL of As2 O3 and 0.5mL normal sodium,B group was subconjunctivally injected 0.5mL 25mg/mL of avastin and 0.5mL normal sodium,C group was subconjunctivally injected 0.5mL 1mg/mL of As2 O3 and 0.5mL 25mg/mL of avastin,D group was subconjunctivally injected 1.0mL normal sodium,after corneal alkali burn,respec-tively.CNV area at 6 days,12 days,15 days,21 days and 28 days after burns were calculated,the expression of IL -1β,VCAM-1 and VEGF in corneal tissue at 7 days,14 days,28 days after burns were detected by immunohisto-chemical staining.Results Alkali burn after 28 d,the CNV,IL -1β,VCAM-1,VEGF expression rates of A group were (50.28 ±30.26)mm2 ,(6.83 ±1.74)%,(1.52 ±0.91)%,(5.02 ±0.82)%,respectively,which of B group were (55.19 ±20.03)mm2 ,(6.88 ±1.94)%,(1.41 ±0.94)%,(2.91 ±0.84)%,respectively,which of C group were (10.03 ±5.98)mm2 ,(1.96 ±0.99)%,(0.38 ±0.57)%,(1.08 ±0.77)%,respectively,which of D group were (83.18 ±33.05)mm2 ,(10.16 ±2.17)%,(3.74 ±0.83)%,(7.69 ±1.33)%,respectively.The differences among four groups were statistically significant (F =25.33,3.64,13.13,7.23,all P 0.05);Compared with B group,the expression of VEGF was significantly increased in A group (q =4.03,P <0.05).Conclusion Avastin combined with As2 O3 can inhibit the growth of CNV induced by alkali burning in rabbits effectively,and reduce the expressions of IL -1β, VCAM-1 and VEGF in CNV.It has better efficacy than single drug,and it opens up a new way for the prevention and treatment of CNV.