【摘要】 目的:探讨白内障合并糖尿病患者血清及房水中的血管内皮生长因子(vascular endochelial growth factor,VEGF),肿瘤坏死因子α(tumor necrosis factorα,TNFα)的水平及其与眼底病变程度相关性。方法:测定60例白内障合并糖尿病患者(术后眼底检查分为A,B,C组)及20例正常对照组D组VEGF,TNFα的水平。结果:房水中VEGF,TNFα浓度均呈明显同向增高趋势。房水VEGF与TNFα二者有显著正相关性,差异有统计学意义(P<0.05)。血清中的TNFα浓度呈明显增高的趋势(P<0.05),但血清中VEGF水平在C组与B组无明显差异(P>0.05),在C组中的VEGF与TNFα无相关性(P>0.05)。结论:白内障合并糖尿病患者血清及房水中的VEGF,TNFα的水平与糖尿病病情进展到单纯型糖尿病性视网膜病变期一致,并且VEGF,TNFα之间有相关性。但当白内障合并糖尿病病情发展到增生性糖尿病视网膜病变期时血清及房水中的TNFα水平变化一致,但血清及房水中的VEGF水平变化并不一致。
【关键词】 血管内皮生长因子;肿瘤坏死因子α;白内障;糖尿病;增生性糖尿病视网膜病变
Quantitative detection and correlation analysis of VEGF, TNFα in cataract patients with diabetes mellitus serum and aqueous humor
WenWen Chen, PingHua Li
Department of Ophthalmology,the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
Abstract AIM: To discuss the VEGF(vascular endothelial growth factor), TNFα(tumor necrosis factorα) level in serum and aqueous of cataract patients with diabetes. To study and estimate whether the preoperative VEGF, TNFα level in serum of cataract patients with diabetes is related to the degree of fundus lesion. METHODS: Determine the VEGF, TNFα level of 60 cataract patients with diabetes(divide into A, B, C groups by the fundus examination after operations) and 20 normal control groupD group’s VEGF, TNFα level. RESULTS: The VEGF and TNFα level in aqueous have a tendency of obviously increasing in the same direction. The VEGF and TNFα level in aqueous are correlated positively obviously, differences have statistical significance(P<0.05). TNFα level in serum have a tendency of obviously increasing(P<0.05),but TNFα level in serum is not different(P>0.05) in C and B group, The VEGF and TNFα level are not correlated(P>0.05) in C group. CONCLUSION: The VEGF, TNFα level in serum and aqueous of cataract patients with diabetes ,is consist to the degree of diabetes course in the early stages, are correlative between them. The changes of TNFα level in serum and aqueous is consistent when the course of cataract patients with diabetes develop to the period of proliferative diabetic retinopathy,the changes of VEGF level in serum and aqueous are not consistent yet. KEYWORDS: vascular endothelial growth factor; tumor necrosis factorα; cataract; diabetes mellitus; proliferative diabetic retinopathy
0引言 在中国由于白内障合并糖尿病患者人数的增加,提示白内障术后由于糖尿病视网膜病变存在手术后视力无提高或者仍有视力丧失和视功能损害的几率增大,为此,我们测定白内障合并糖尿病患者血清及房水中VEGF,TNFα的水平,旨在探讨:(1)糖尿病视网膜病变是白内障术后影响视功能恢复的原因之一;(2)VEGF,TNFα能否对糖尿病视网膜病变进行早期预测。
1对象和方法
1.1对象 血清和房水标本80例(80眼),全部采自我院眼科200801/08行白内障超声乳化手术的部分患者。实验组60例,均为确诊患有白内障合并2型糖尿病眼底情况无法窥清(眼科辅助检查排除了玻璃体积血及视网膜脱离)的患者入院行手术治疗,60例中用胰岛素控制血糖者男8例,女11例,用口服药物治疗控制血糖者男23例,女18例,术前血糖均控制在8.3mmol/L以下,无其他眼部疾病史。根据患者术后眼底检查及眼底荧光血管造影结果,按照1987年中华医学会糖尿病性视网膜病变分期标准,将实验组分为无糖尿病性视网膜病变组(A组)、糖尿病性视网膜病变组分为单纯型糖尿病性视网膜病变组(B组)和增生型糖尿病性视网膜病变组(C组)和无糖尿病的老年性白内障对照组(D组)。各组均为近成熟期的老年性白内障患者,也无其它眼部疾病史。各组年龄和性别差异无统计学意义(表1)。
表1 实验分组资料(略)
1.2方法 血清标本:患者术前清晨空腹采血,分离血清放入0.5mL Eppendof管内,然后移至70℃的冰箱中。房水标本:眼科手术常规消毒铺巾开睑后,在角膜缘内1mm行前房穿刺,获得未稀释前的房水0.15~0.2mL,然后行常规超声乳化晶状体后植入折叠式人工晶状体,术后常规处理。房水标本移至0.5mL Eppendof管,然后移至70℃的冰箱中。各组血清及房水标本均采用双抗体夹心ELISA法检测VEGF和TNFα的含量。通用型VEGF,TNFα的ELISA试剂盒均购自北京尚柏生物医学技术有限公司,操作均按说明书进行。 统计学分析:采用SPSS 11.0统计学软件进行分析,所有数据用(±s)表示。两组间均数比较采用t检验,多组间均数的总体比较由于方差不齐应用秩和检验,组间多重均数的比较采用调整检验水准的秩和检验。相关性分析采用相关分析,所有数据进行方差齐性检验及正态性分布检验,以P<0.05为差异有统计学意义。
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