目的探讨类固醇5α-还原酶2型缺乏症(SRD5A2)的临床特点、基因突变特征。方法回顾分析1例以外阴异常为初诊表现的SRD5A2患儿的临床资料。结果患儿,2岁5个月,社会性别为女性。基础促黄体生成素(LH)0.07 m IU/mL、促卵泡激素(FSH)0.39 m I...目的探讨类固醇5α-还原酶2型缺乏症(SRD5A2)的临床特点、基因突变特征。方法回顾分析1例以外阴异常为初诊表现的SRD5A2患儿的临床资料。结果患儿,2岁5个月,社会性别为女性。基础促黄体生成素(LH)0.07 m IU/mL、促卵泡激素(FSH)0.39 m IU/mL;人绒毛膜促性腺激素(HCG)刺激试验前后,睾酮分别是0.06 ng/mL、3.65ng/mL,双氢睾酮(DHT)分别是19.67 pg/mL、68.25 pg/mL;17-羟孕酮(17-OHP)1.20 ng/mL,雄烯二酮(A 2)0.07 ng/mL;HCG试验后T/DHT为51.72、T/A 2为14.70;抗苗勒管激素(AMH)22.97 ng/mL,抑制素B(INH-B)274.4 pg/mL。盆腔超声和磁共振均未探及子宫及卵巢。染色体为46,XY;性别决定(SRY)基因检测无异常;雄激素受体(AR)基因结果阴性。患儿及父母外周血均检测到2型5α-还原酶(SRD5A2)基因的致病性突变。应用2.5%DHT凝胶涂抹阴茎4个月后阴茎增长2 cm。结论 SRD5A2的诊断以HCG试验后T/DHT增高为主要依据,检测到致病性的SRD5A2基因突变可确诊。展开更多
Objective: To further explore the mechanism of congenital pyrimidine 5'-nucleotidase I deficiency. Methods; The samples were collected from the family members of a patient with P5'N- I deficiency. The enzyme a...Objective: To further explore the mechanism of congenital pyrimidine 5'-nucleotidase I deficiency. Methods; The samples were collected from the family members of a patient with P5'N- I deficiency. The enzyme activities were measured by UMP method and the enzyme proteins were quantified by ELISA while the morphology of peripheral blood cells was observed. Results: The enzyme contents reduced as their enzyme activities decreased in the family especially in four members. There was a significant positive correlation(r =0. 955) between the activity and the content of P 5'N- I . The count of the stippling cell was varied in the family. Conclusion.- One of the reasons for congenital P5' N- I deficiency might be the deficiency in the enzyme content. The morphology of peripheral blood erythrocyte may be an assistant diagnotic index. The P5'N- I activities and contents were measured simultaneously may be a effective method in clinic diagnosis.展开更多
5α-还原酶2缺乏症(5αt-reductase type 2 deficiency,5α-RD2)为常染色体隐性遗传的单基因遗传病,是46,XY性发育异常疾病(46,XY disorders of sex development,46,XY DSD)的常见类型之一.该病由5α-还原酶2缺乏引起,临床表现复杂多样,...5α-还原酶2缺乏症(5αt-reductase type 2 deficiency,5α-RD2)为常染色体隐性遗传的单基因遗传病,是46,XY性发育异常疾病(46,XY disorders of sex development,46,XY DSD)的常见类型之一.该病由5α-还原酶2缺乏引起,临床表现复杂多样,与46,XY DSD其他类型有较高的重叠,诊断比较困难.早期诊断和治疗对患者的预后有很大的帮助.该文通过回顾文献,总结5α-还原酶2缺乏症的诊疗新进展,辅助临床对于该病的诊断和治疗.展开更多
文摘Objective: To further explore the mechanism of congenital pyrimidine 5'-nucleotidase I deficiency. Methods; The samples were collected from the family members of a patient with P5'N- I deficiency. The enzyme activities were measured by UMP method and the enzyme proteins were quantified by ELISA while the morphology of peripheral blood cells was observed. Results: The enzyme contents reduced as their enzyme activities decreased in the family especially in four members. There was a significant positive correlation(r =0. 955) between the activity and the content of P 5'N- I . The count of the stippling cell was varied in the family. Conclusion.- One of the reasons for congenital P5' N- I deficiency might be the deficiency in the enzyme content. The morphology of peripheral blood erythrocyte may be an assistant diagnotic index. The P5'N- I activities and contents were measured simultaneously may be a effective method in clinic diagnosis.
基金北京市科委培育项目(Z151100003915103)%Beijing Municipal Science and Technology Commission(Z151100003915103)
文摘5α-还原酶2缺乏症(5αt-reductase type 2 deficiency,5α-RD2)为常染色体隐性遗传的单基因遗传病,是46,XY性发育异常疾病(46,XY disorders of sex development,46,XY DSD)的常见类型之一.该病由5α-还原酶2缺乏引起,临床表现复杂多样,与46,XY DSD其他类型有较高的重叠,诊断比较困难.早期诊断和治疗对患者的预后有很大的帮助.该文通过回顾文献,总结5α-还原酶2缺乏症的诊疗新进展,辅助临床对于该病的诊断和治疗.
