中华皮肤科杂志 ›› 2004, Vol. 37 ›› Issue (6): 317-319.

• 论著 •    下一篇

生物素酶缺乏症一例研究

杨艳玲1, 何小菊1, 涂平2, 杨淑霞2, 钱宁1, 包新华1, 秦炯1   

  1. 1. 北京大学第一医院儿科 100034;
    2. 北京大学第一医院皮肤科 100034
  • 收稿日期:2003-06-14 出版日期:2004-06-15 发布日期:2004-06-15
  • 基金资助:
    卫生部临床学科重点项目(2001-0912)

Clinical Study of a Patient with Pustular Psoriasis-like Lesion and Cerebral Palsy Due to Biotinidase Deficiency

YANG Yan-ling1, HE Xiao-ju1, TU Ping2, YANG Shu-xia2, QIAN Ning1, BAO Xin-hua1, QIN Jiong1   

  1. Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
  • Received:2003-06-14 Online:2004-06-15 Published:2004-06-15

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摘要： 目的 探讨因生物素酶缺乏症所致皮肤、神经损害患儿的临床特征、诊断与治疗方法.方法 运用尿有机酸分析(气相色谱-质谱联用)及干燥血液生物素酶活性测定进行筛查与诊断,对患儿的临床表现、生化特点、诊疗情况进行分析.结果 患儿男,生后2个月头部出现散在湿疹、脓疱疹,8个月时全身发红、脓疱疹;智力发育正常,运动发育落后,6个月起出现肌张力不全样发作.5岁4个月时来院.体检见重度营养不良貌,毛发稀黄,全身弥漫性浸润性红斑,头面部、躯干、四肢散在脓疱疹,表面可见脓痂.全身瘫痪,四肢挛缩,躯干及四肢肌张力增高.实验室检查发现轻度贫血、代谢性酸中毒、血浆肌酸激酶增高.有机酸分析显示尿乳酸、丙酮酸、3-羟基丙酸、丙酰甘氨酸、甲基巴豆酰甘氨酸增高.干燥滤纸血片生物素酶活性<0.1pmol·min-1·3mm-1,符合生物素酶缺乏症.经生物素(10mg/d)补充治疗与营养干预后,患儿全身情况逐渐好转,2周后皮疹愈合,经康复训练后,运动能力亦逐渐提高.结论 生物素酶缺乏症常导致严重皮肤与神经系统损害,早期诊断与治疗是挽救患儿的关键.该患儿以脓疱性银屑病样损害及肌张力不全型脑性瘫痪为主要表现,生物素补充治疗疗效显著,但由于发现过晚,遗留下肢痉挛性瘫痪.

关键词: 生物素酶缺乏, 生物素, 皮肤表现, 神经病学表现

Abstract: Objective To investigate the clinical and laboratory profiles of a patient with pustular psoriasis-like skin lesion and cerebral palsy due to biotinidase deficiency. Methods A 5 year and 4 month-old boy with biotinidase deficiency was confirmed by urinary organic acid analysis with gas chromatography/mass spectrometry (GC/MS)and biotinidase activity assay of peripheral blood. His clinical features, laboratory findings, treatment and outcome were studied. Results The boy showed difficulty in taking food after birth, gradually eczema and pustules appeared at the age of 2 months, and generalized erythema and intractable pustular psoriasis-like lesion at the age of 8 months. His intellectual development was normal with retardation of locomotor system. He had muscular dystonia at the age of 6 months. Physical examination showed generalized pustular psoriasis-like lesion, generalized paralysis, hypertonic contracture of extremities, sparseness of scalp hair and severe malnutrition. Routine laboratory tests showed a mild anemia, metabolic acidosis and elevation of plasma creatine phosphokinase. Increased excretion of urinary lactate, pyruvate, 3-OH-propionate, propionylglycine, and 3-methylcrontonylglycine were observed. Biotinidase activity of his peripheral blood was below 0.1 pmol/min/3mm (normal 6.3-9.3 pmol/min/3mm). Biotin (10 mg/day) supplementation led to a dramatic recovery of the skin lesion. After the treatment of rehabilitation, his muscle power was also improved gradually. Conclusions Dermatological and neurological manifestations are the main features of biotinidase deficiency. Early diagnosis and biotin administration can greatly improve the clinical symptoms. Generalized pustular psoriasis-like lesion and cerebral palsy of this boy have improved after the supplementation of biotin, but he may be remained wheelchair-dependent because of delayed diagnosis.

Key words: Biotinidase deficiency, Biotin, Skin manifestations, Neurologic manifestations