肾上腺皮质疾病患者超氧化物歧化酶和丙二醛的表达及意义

Expression and significance of super oxide dismutase and malondialdehyde in the serum of patients with adrenocortica diseases

目的 探讨超氧化物歧化酶活性（SOD）和丙二醛水平（MDA）在肾上腺皮质疾病患者外周血血清和组织中的表达及与意义. 方法 选择肾上腺皮质增生患者12例、肾上腺皮质腺瘤患者10例,健康对照者11例,分别比较对照组和病例组患者术前血清学铜/锌超氧化物歧化酶（Cu/Zn-SOD）、锰超氧化物歧化酶（Mn-SOD）活性和MDA含量、肾上腺组织免疫组化染色Cu/Zn-SOD、Mn-SOD阳性细胞占细胞总数百分比之间的差异. 结果 病例组各组患者术前血清中Cu/Zn-SOD、Mn-SOD活性显著低于健康对照组（P＜0.05）,MDA含量显著高于健康对照组（P＜0.05）;Cu/Zn-SOD染色面积在肾上腺皮质腺瘤组中表达显著降低（P＜0.05）,Mn-SOD染色面积在肾上腺皮质增生和肾上腺皮质腺瘤组中表达显著降低;SOD的血清学与组织学之间表达呈正相关（P＜0.05）. 结论 SOD和MDA在肾上腺皮质疾病患者血清和组织中表达异常,联合检测SOD、MDA可能为肾上腺皮质疾病的鉴别诊断提供新的方法.

Objective To investigate the expression and significance of super oxide dismutase activity and malondialdehyde concentration in the serum and adrenal grands of patients with adrenocortica diseases. Methods 12 patients with adrenal hyperplasia and 10 patients with adrenal adenoma which were carried out hospital surgery and confirmed by pathology, and 11 cases of normal as controls were selected.The serum level of Cu/Zn-SOD, Mn-SOD and MDA before operation, and Cu/Zn-SOD and Mn-SOD positive cells percentage of adrenal tissue were compared between three groups. Results Before adrenalectomy SOD activity was lower（P 〈0.05）and MDA concentration was higher in serum（P〈0.05）than the control group.Cu/Zn-SOD positive cell was lower in adrenocortical adenoma tissue than that of adrenocorticohyperplasia and normal cortex（P 〈0.05）.Mn-SOD positive cell had a significant difference among adrenocortical hyperplasia, adrenocortical adenoma and normal adrenal cortex tissue（P 〈0.05）.Both SOD positive cell in adrenocortical adenoma tissue were the lowest of all.In addition,the expression of SOD in tissue had a significant positive correlation with serological expression in study group. Conclusion The superoxide dismutase activities and malondialdehyde concentration seemed to change with adrenocortica diseases.The detection of superoxide dismutase activities and malondialdehyde concentration in the serum and adrenal grands could be the potential methods for the diagnosis and differential diagnosis of adrenocortica diseases.