外周血血管内皮生长因子在垂体腺瘤患者的表达

目的探讨外周血中血管内皮生长因子(vascular endothelial growth factor,VEGF)的表达水平是否可反映垂体腺瘤的生物行为.方法以203例垂体腺瘤患者、22例垂体增生患者、7例垂体Rathke囊肿患者及3例垂体脓肿患者为研究对象,并以20例正常献血者为对照组,用酶联免疫吸附法测定各组外周血中VEGF水平.结果在垂体疾病患者中,垂体腺瘤患者的血清VEGF水平为(366.8±211.1)pg/ml,垂体增生患者为(286.8±107.6)pg/ml,分别高于垂体Rathke囊肿患者(180.5±61.7)pg/ml、垂体脓肿患者(147.5±46.3)pg/ml和正常对照组(180.8±56.2)pg/ml,差异均具有显著性(P＜0.05).在垂体腺瘤患者中,大腺瘤(380.0±234.5)pg/ml和巨大腺瘤(380.1±280.3)pg/ml分别高于微腺瘤(294.6±111.6)pg/ml和垂体增生,差异有显著性差异(P＜0.05).而血清VEGF在垂体腺瘤是否具有侵袭性生长、卒中、囊性变和激素分泌类型上表达无差异(P＞0.05).结论外周血VEGF水平可反映垂体腺瘤生长大小的生物学行为,不能反映垂体腺瘤是否具有侵袭性生长、出血卒中、囊性变及激素分泌类型.检测外周血中VEGF水平对垂体腺瘤与垂体Rathke囊肿、垂体脓肿的鉴别可能具有一定的参考价值.

Expressive level of vascular endothelial growth factor in peripheral blood in patients with pituitary adenomas

OBJECTIVE: To discuss whether vascular endothelial growth factor (VEGF) in the peripheral blood can reflect the biological activities of pituitary adenomas. METHODS: The concentrations of VEGF in peripheral blood were measured with ELISA in 203 patients with pituitary adenomas, 22 patients with pituitary hyperplasia, 7 patients with pituitary Rathke' pouch and 3 patients with pituitary abscess. RESULTS: The serum VEGF levels were (366.8 +/- 211.1) pg/ml and (286.8 +/- 107.6) pg/ml in patients with pituitary adenomas and pituitary hyperhasia, respectively, which were higher than those in patients with pituitary Rathke' pouch (180.5 +/- 61.7) pg/ml], patients with pituitary abscess (147.5 +/- 46.3) pg/ml] and the health control (180.8 +/- 56.2) pg/ml] (P < 0.05). In patients with pituitary adenomas, the VEGF levels were (380.0 +/- 234.5) pg/ml in macroadenomas and (380.1 +/- 2870.3) pg/ml in giant adenomas, higher than those in microadenomas (294.6 +/- 111.6) pg/ml] and in pituitary hyperhasia respectively (P < 0.05). The serum VEGF levels were not significantly different in pituitary adenoma in terms of invasive growth, apoplexy, cyst and hormone secretory functions (P > 0.05). CONCLUSIONS: The upregulation of serum VEGF expression may reflect the biological activities of pituitary adenoma. However, it may not be associated with pituitary Rathke' pouch, pituitary abscess, adenoma with invasiveness, apoplexy, cyst and hormone secretory function. The serum VEGF levels could be helpful in differentiating pituitary adenoma from pituitary Rathke' pouch and pituitary abscess.