AdPLA基因在Ⅲ级静止期甲状腺相关眼病眼眶脂肪内高表达研究

摘要

Objective To detect the expression levels of adipose-specific phospholipase A2 (AdPLA) mRNA in orbital adipose tissue of thepatients with thyroid associated ophthalmopathy and the normals.Methods Sixteen patients with TAO of m level and stationary phase underwent orbital decompression,and 29 normals underwent ocular plastic surgery in Shenzhen Eye Hospital between August,2015 and October,2016.Orbital fat samples were collected from one eyes of these patients during surgery.The age,gender,height,weight,body mass index (BMI),exophthalmos degree,orbital fat of the patients with TAO and the normals were recorded and calculated.Using real time PCR,the AdPLA mRNA were detected from these orbital fat samples.Results There was no significant difference between the patients with TAO and the normals in age,gender,and BMI (all P ＞ 0.05).TAO group had more exophthalmos degree (20.406 ± 1.369)mm than the normals (14.207 ± 1.146) mm.TAO group had more orbital fat (32.162 ± 1.923) mL than the normals (24.279 ± 1.070) mL.The average expression level of AdPLA in patients with TAO was 0.039 42 ± 0.009 85,and 0.004 42 ± 0.001 36 in the normal.There was significant difference between two groups (P ＜ 0.05).Conclusion The patients with TAO of Ⅲ level and stationary phase have more exophthalmos degree and orbital fat than the normals.AdPLA mRNA is higher expressed in orbital adipose tissue of the patients with TAO of Ⅲ level and stationary phase than the normals.The high expression of AdPLA may reduce lipolysis in the orbital adipose tissue,lead to fat accumulation in orbits,and aggravate exophthalmos of patients with TAO.%目的 检测甲状腺相关眼病(thyroid associated ophthalmopathy,TAO)患者和正常人眼眶脂肪组织中脂肪特异性磷脂酶A2(adipose-specific phospholipase A2,AdPLA) mRNA的表达水平.方法 2015年8月至2016年10月16例静止期Ⅲ级TAO患者(TAO组)在深圳市眼科医院接受眼眶减压术,同期29位正常人(正常对照组)行眼部整形手术.术中取患者和正常对照一眼的眼眶脂肪;记录每位受试者的年龄、性别、身高、体质量,计算体质量指数(body mass index,BMI),测量取脂肪一侧眼的眼球突出度和眼眶脂肪体积;用实时定量多聚酶链式反应定量检测眼眶脂肪组织中AdPLA mRNA的表达水平.结果 TAO组与正常对照组年龄、性别和BMI相比差异均无统计学意义(均为P＞0.05),TAO组的眼球突出度(20.406±1.369)mm明显多于正常对照组(14.207±1.146) mm,TAO组的眼眶内脂肪量(32.162 ±1.923) mL明显多于正常对照组(24.279±1.070) mL.TAO组眼眶脂肪中AdPLA mRNA的表达量为0.039 42±0.009 85,正常对照组眼眶脂肪中AdPLA mRNA的表达量为0.004 42±0.001 36,两组相比差异有统计学意义(P＜0.05).结论 静止期Ⅲ级TAO患者的眼球突出度和眼眶内脂肪量明显多于正常人,眼眶脂肪组织中AdPLA mRNA的表达量明显高于正常人.AdPLA的高表达可能使TAO眼眶脂肪水解减少,造成眼眶脂肪堆积,加重了眼球突出.