I型遗传性酪氨酸血症(hereditary tyrosinemia type 1,HT1)是一种常染色体隐形遗传病,主要是由于FAH基因(fumarylacetoacetate hydroxylase,FAH)突变导致酪氨酸代谢发生障碍,不能正常代谢延胡索酸和乙酰乙酸。临床上主要表现为严重的肝...I型遗传性酪氨酸血症(hereditary tyrosinemia type 1,HT1)是一种常染色体隐形遗传病,主要是由于FAH基因(fumarylacetoacetate hydroxylase,FAH)突变导致酪氨酸代谢发生障碍,不能正常代谢延胡索酸和乙酰乙酸。临床上主要表现为严重的肝、肾损伤,甚至肝癌。依赖基因编辑技术的发展,Fah基因修饰的小鼠、大鼠、兔和小型猪模型均相继成功制备。目前,这些动物模型已经广泛应用于人类HT1疾病的病理生理、肝脏生物学、肝干细胞以及肝癌基因治疗的研究,同时也用于制备人源化肝和人肝细胞扩增的生物反应器。本文拟对I型遗传性酪氨酸血症动物模型的相关研究进展进行综述和探讨,为更好的研究该疾病提供一些线索。展开更多
Oculo-cutaneous tyrosinaemia type II is an autosomal recessive disease due to an abnormality of tyrosine metabolism, probably because of a deficiency of cytoplasmic tyrosine aminotransferase. It presents as a varying ...Oculo-cutaneous tyrosinaemia type II is an autosomal recessive disease due to an abnormality of tyrosine metabolism, probably because of a deficiency of cytoplasmic tyrosine aminotransferase. It presents as a varying association of focal palmoplantar keratosis, bilateral keratitis and mental retardation. Herein, we report an 8-year-old boy with palmoplantar hyperkeratosis with peripheral oozing and dendritic keratitis appearing after the skin lesions. There was no mental deterioration despite the long delay in diagnosis of the disorder. The diagnosis was confirmed by the presence of hypertyrosinaemia and the absence of hepatorenal lesion. The child exhibited a remarkable degree of improvement in the hyperkeratotic lesions and keratitis after the dietary modifications were instituted. In conclusion, chronic focal bullous palmoplantar hyperkeratosis along with keratitis should alert the clinician to screen for abnormal serum and/or urine tyrosine level. Awareness of the presenting signs and symptoms may speed up the diagnosis and initiation of a tyrosine and phenylalanine-restricted diet that is most efficient in improving the symptoms and preventing visual and cognitive impairment.展开更多
文摘I型遗传性酪氨酸血症(hereditary tyrosinemia type 1,HT1)是一种常染色体隐形遗传病,主要是由于FAH基因(fumarylacetoacetate hydroxylase,FAH)突变导致酪氨酸代谢发生障碍,不能正常代谢延胡索酸和乙酰乙酸。临床上主要表现为严重的肝、肾损伤,甚至肝癌。依赖基因编辑技术的发展,Fah基因修饰的小鼠、大鼠、兔和小型猪模型均相继成功制备。目前,这些动物模型已经广泛应用于人类HT1疾病的病理生理、肝脏生物学、肝干细胞以及肝癌基因治疗的研究,同时也用于制备人源化肝和人肝细胞扩增的生物反应器。本文拟对I型遗传性酪氨酸血症动物模型的相关研究进展进行综述和探讨,为更好的研究该疾病提供一些线索。
文摘Oculo-cutaneous tyrosinaemia type II is an autosomal recessive disease due to an abnormality of tyrosine metabolism, probably because of a deficiency of cytoplasmic tyrosine aminotransferase. It presents as a varying association of focal palmoplantar keratosis, bilateral keratitis and mental retardation. Herein, we report an 8-year-old boy with palmoplantar hyperkeratosis with peripheral oozing and dendritic keratitis appearing after the skin lesions. There was no mental deterioration despite the long delay in diagnosis of the disorder. The diagnosis was confirmed by the presence of hypertyrosinaemia and the absence of hepatorenal lesion. The child exhibited a remarkable degree of improvement in the hyperkeratotic lesions and keratitis after the dietary modifications were instituted. In conclusion, chronic focal bullous palmoplantar hyperkeratosis along with keratitis should alert the clinician to screen for abnormal serum and/or urine tyrosine level. Awareness of the presenting signs and symptoms may speed up the diagnosis and initiation of a tyrosine and phenylalanine-restricted diet that is most efficient in improving the symptoms and preventing visual and cognitive impairment.
