One of the major causes of congenital hypophosphatemic rickets is the X-linked hypophosphatemic rickets (XHR), due to a defect on PHEX gene. The XHR increases the renal elimination of phosphate, that condition leads a...One of the major causes of congenital hypophosphatemic rickets is the X-linked hypophosphatemic rickets (XHR), due to a defect on PHEX gene. The XHR increases the renal elimination of phosphate, that condition leads a defective mineralization of bones and also affects the growth in children. Clinical diagnosis should be suspected in children with signs of rickets and hypophosphatemia with normal calcium levels. We describe clinical characteristics and genetic results of four patients diagnosed and treated in our Nephrology Section. All patients have a “de novo” XHR as none familiars are affected. Early diagnosis should be suspected before the bone deformities have been submitted and the growth would have been impaired.展开更多
X-连锁低血磷性佝偻病(X-linked hypophosphatemic rickets,XLH)是伴X染色体显性遗传的罕见病。其临床表型差异较大,即使是同一个家系,临床表现的轻重也有所差异。这可能与位于X染色体上与内肽酶同源的磷酸盐调节基因(phosphate-regulat...X-连锁低血磷性佝偻病(X-linked hypophosphatemic rickets,XLH)是伴X染色体显性遗传的罕见病。其临床表型差异较大,即使是同一个家系,临床表现的轻重也有所差异。这可能与位于X染色体上与内肽酶同源的磷酸盐调节基因(phosphate-regulating gene with homologies to endopeptidases on X chromosome,PHEX)突变有关。本文从PHEX基因的突变类型、突变位点以及突变剂量方面,对XLH基因型和临床表型的相关性予以综述,以期为XLH的基因研究与早期临床诊疗提供依据。展开更多
文摘One of the major causes of congenital hypophosphatemic rickets is the X-linked hypophosphatemic rickets (XHR), due to a defect on PHEX gene. The XHR increases the renal elimination of phosphate, that condition leads a defective mineralization of bones and also affects the growth in children. Clinical diagnosis should be suspected in children with signs of rickets and hypophosphatemia with normal calcium levels. We describe clinical characteristics and genetic results of four patients diagnosed and treated in our Nephrology Section. All patients have a “de novo” XHR as none familiars are affected. Early diagnosis should be suspected before the bone deformities have been submitted and the growth would have been impaired.
文摘X-连锁低血磷性佝偻病(X-linked hypophosphatemic rickets,XLH)是伴X染色体显性遗传的罕见病。其临床表型差异较大,即使是同一个家系,临床表现的轻重也有所差异。这可能与位于X染色体上与内肽酶同源的磷酸盐调节基因(phosphate-regulating gene with homologies to endopeptidases on X chromosome,PHEX)突变有关。本文从PHEX基因的突变类型、突变位点以及突变剂量方面,对XLH基因型和临床表型的相关性予以综述,以期为XLH的基因研究与早期临床诊疗提供依据。
