Pastore Lisa M, Morris Wendy L, Karns Logan B
Department of Obstetrics and Gynecology, School of Medicine, University of Virginia, Charlottesville, VA 22908-0712, USA.
J Genet Couns. 2008 Feb;17(1):84-91. doi: 10.1007/s10897-007-9129-9. Epub 2007 Oct 30.
Female fragile X premutation carriers are at approximately 10-fold increased risk of premature ovarian failure (follicle stimulating hormone >40 mIU/mL, amenorrhea, age <40). A milder degree of premature ovarian aging (diminished ovarian reserve, where follicle stimulating hormone levels are typically 10-20 mIU/mL) results in infertility. Approximately 10% of fertility clinic patients have this diagnosis. A cohort of 20 women diagnosed with diminished ovarian reserve provided a blood specimen (confidential results), and completed structured questionnaires that assessed emotional reactions to potentially being a premutation carrier (pretest questionnaire, n = 20) and the posttest known carrier status (3 month follow-up questionnaire, n = 18 non-carriers). Responses were measured using 9-point scales, and analyzed with Fisher exact and Wilcoxon exact tests. While most participants did not view fragile X premutations as a serious medical condition, perceptions of seriousness were positively correlated with anger and regret about not knowing sooner of the potential association of these premutations with infertility. Overall, when women (pretest) imagined themselves as carriers, their self-esteem and Health Orientation Scale responses were unchanged with the exception of feeling more afraid (p = 0.004). Despite strongly wishing for negative test results, they were glad to know there might be a medical explanation for their infertility.
脆性X前突变女性携带者发生卵巢早衰(促卵泡激素>40 mIU/mL、闭经、年龄<40岁)的风险增加约10倍。程度较轻的卵巢早衰(卵巢储备功能减退,促卵泡激素水平通常为10 - 20 mIU/mL)会导致不孕。约10%的生殖医学门诊患者有此诊断。一组20名被诊断为卵巢储备功能减退的女性提供了血样(保密结果),并完成了结构化问卷,问卷评估了她们对潜在成为前突变携带者的情绪反应(检测前问卷,n = 20)以及检测后已知的携带者状态(3个月随访问卷,n = 18名非携带者)。使用9分制量表测量回答,并采用Fisher精确检验和Wilcoxon精确检验进行分析。虽然大多数参与者不认为脆性X前突变是一种严重的医学状况,但对严重性的认知与对不知道这些前突变与不孕之间潜在关联的愤怒和遗憾呈正相关。总体而言,当女性(检测前)想象自己是携带者时,除了感觉更害怕(p = 0.004)外,她们的自尊和健康取向量表回答没有变化。尽管强烈希望检测结果为阴性,但她们很高兴知道自己的不孕可能有医学解释。