中华眼科杂志 1999年第5期第35卷 论 著
作者:龙心光 王映芬 黄应桂 文 立 陈毓东
单位:(龙心光、王映芬、陈毓东) 524001 湛江,广东医学院附属医院眼科;(黄应桂、文 立) 病理科
关键词:翼状胬肉;增殖细胞核抗原
【摘要】 目的 观察翼状胬肉的增殖状况及用药后的变化。方法 将54例翼状胬肉术前患者随机分为3 组:Ⅰ组18例为未用药组,Ⅱ组16例术前局部应用氟美松,Ⅲ组20例术前局部应用高三尖杉酯碱加氟美松。采用免疫组化方法对手术切除的翼状胬肉标本进行增殖细胞核抗原(proliferating cell nuclear antigen, PCNA)检测。结果 未用药组(Ⅰ组)PCNA阳性率为(11.53±3.62)%,氟美松组(Ⅱ组)为(10.28±4.18)%(P>0.05),高三尖杉酯碱加氟美松组(Ⅲ组)为(5.59±3.82)%(P<0.01)。<60岁的进行型患者PCNA阳性率高于≥60岁的静止型患者。结论 翼状胬肉组织中存在细胞增殖及PCNA表达,术前应用高三尖杉酯碱加氟美松可抑制PCNA表达及术后翼状胬肉的复发,而术前应用氟美松对PCNA的表达则无影响。
The PCNA immunohistochemical study of pterygium
LONG Xinguang, WANG Yingfen, HUANG Yinggui, et al.
Department of Ophthalmology, The Affiliated Hospital of Guangdong Medical College, Zhanjiang 524001
【Abstract】 Objective To study the proliferating status of pterygium and the drug′s influence on it.Method Fifty four patients with pterygium were randomly assigned into three groups: Before the surgical excision of the pterygium, group 1 (18 cases) had received no drug, group 2 (16 cases) received local dexamethasone treatment, and group 3 (20 cases), local homoharringtonine and dexamethasone treatment. The immunohistochemical study on proliferating cell nuclear antigen (PCNA) was performed on the surgical specimens of the pterygium.Result The PCNA positive rate was (11.53±3.62)% in the untreated group, (10.28±4.18)% in the dexamethasone group (P>0.05), and (5.59±3.82)% in the homoharringtonine and dexamethasone group (P<0.01). The PCNA positive rate was higher in the younger patients (<60 years) with progressive type of the disease than that in the elder patients (≥60 years) with quiet type.Conclusions There are cell proliferation and PCNA expression in pterygium. The homoharringtonine and dexamethasone local injection before the excision of pterygium can effectively decrease the PCNA expression and recurrence rate of pterygium. Local injection of dexamethasone before surgical excision has no influence on the PCNA expression of pterygium.
【Key words】 Pterygium Proliferating cell nuclear antigen
翼状胬肉是较为常见的眼科疾病,其病因及发病机制尚不甚明确。为了解其增生特点及用药后改变,我们对54例翼状胬肉患者标本采用免疫组化方法进行增殖细胞核抗原(proliferating cell nuclear antigen, PCNA)检测, 报告如下。
资料和方法
1.对象:选择本院1995~1997年门诊及住院的初发翼状胬肉患者54例(54只眼),其中男31例,女23例;年龄20~75岁,平均58.2岁。病程1~20年。随机分为3组:Ⅰ组18例为未用药组,Ⅱ组16例术前应用氟美松,Ⅲ组20例术前应用高三尖杉酯碱加氟美松。3组在年龄、性别、病程、胬肉分级及分型上匹配。
2.方法:用药组分别在术前1、3及7天于翼状胬肉局部注射氟美松1.0 mg(Ⅱ组)或氟美松1.0 mg加高三尖杉酯碱0.2 mg(Ⅲ组)。
3.PCNA检测:用链霉卵白素-过氧化物酶连接法(streptavidin peroxidase conjugated method,SP法)。术中取翼状胬肉头部及体部立即置于4%甲醛液中固定24 h,石蜡包埋切片,切片脱蜡和水化后,PBS冲洗3次,加1滴过氧化物酶阻断溶液,室温孵育10 min,PBS冲洗后加1滴小牛血清及50 μl PCNA(一抗, 福州迈新公司提供),室温下孵育60 min,PBS冲洗后加生物素标记的第二抗体,室温孵育10 min,然后依次加入链霉卵白素-过氧化物酶溶液及DAB酶底物显色剂等,光镜下观察3~10 min后,用自来水冲洗,苏木素复染,中性树胶封固。
4.统计学处理:计数资料用χ2检验;计量资料以均数±标准差(±s)表示,差异显著性检验采用t检验、方差分析和q检验。
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