[Relationship between serum brain-derived neurotrophic factor and clinical stage and dysmenorrhoea of enodmetriosis].

Objective: To explore the association between serum brain-derived neurotrophic factor and clinical stage and dysmenorrhoea of endometriosis. Methods: A total of 82 patients were studied with laparoscopically diagnosed endometriosis between June 2017 and June 2019, and 75 healthy women with reproductive age were selected as the control group during the same period. The endometriosis patients were scored by visual analogue scale(VAS)according to their preoperative dysmenorrhoea.And endometriosis was staged and scored according to the score of Revised American Fertility Society(r-AFS).Enzyme-linked immunosorbent assay (ELISA) was used to determine preoperative BDNF level in serum, and the correlation between BDNF level with clinical stage as well as dysmenorrhea of endometriosis were analysed. Results: The serum BDNF level in endometriosis patients was (1 082±43) ng/L, significantly higher than that in the normal control [(649±30) ng/L], there was statistical difference between the two groups(P<0.001). The BDNF expression in patients with r-AFS stage Ⅲ-Ⅳ was higher than that in patients with Ⅰ-Ⅱ stage [(1 164±389) ng/L vs (791±218)ng/L, P<0.001]. BDNF level in serum was closely correlated with the degree of dysmenorrhea (r=0.682), and the BDNF level in patients with moderate or severe dysmenorrhea was significantly higher than that in patients without dysmenorrhea and patients with mild dysmenorrhea [(1 292±43) ng/L vs(718±36) ng/L, P<0.001]. Conclusions: The serum BDNF level in endometriosis patients is positively correlated with clinical stage and dysmenorrhea.目的： 探讨子宫内膜异位症（以下简称"内异症"）患者血清脑源性神经营养因子（BDNF）水平与疾病分期及痛经程度的相关性。 方法： 研究对象为厦门大学附属中山医院2017年6月至2019年6月经腹腔镜诊断的82例内异症患者，术前采用视觉模拟评分法（VAS）进行痛经评分，依据腹腔镜下所见病灶范围及特征，进行修正内异症分期法（r-AFS）评分及分期，同期选取妇科体检未发现异常的育龄期妇女75名作为对照组，应用酶联免疫吸附试验（ELISA）检测两组血清中BDNF水平，并分析内异症患者血清BDNF水平与临床分期及痛经程度之间的相关性。 结果： 内异症患者血清BDNF水平为（1 082±43）ng/L，明显高于正常对照组的（649±30）ng/L，两组比较差异有统计学意义（P<0.001）；血清BDNF水平在r-AFS Ⅲ~Ⅳ期患者显著高于Ⅰ~Ⅱ期患者[（1 164±389）ng/L比（791±218）ng/L，P<0.001]；BDNF水平与痛经程度具有正相关性（r=0.682），中重度痛经患者显著高于无痛经和轻度痛经患者[（1 292±43）ng/L比（718±36）ng/L，P<0.001]。 结论： 内异症患者血清BDNF水平与其临床分期和痛经程度具有正相关性。.