Cherubism is a rare disease characterized by significant loss of medullary bone which is replaced by excessive amounts of fibrous tissue growth within the mandible and maxilla. We present a case of a 4-year-old boy wi...Cherubism is a rare disease characterized by significant loss of medullary bone which is replaced by excessive amounts of fibrous tissue growth within the mandible and maxilla. We present a case of a 4-year-old boy with a rapidly enlarging mandible and maxilla, causing significant change in the facial contour, malocclusion and phonation difficulties. He was treated with aggressive tumor curettage, lateral mandibular cortex osteotomies with medial repositioning. This allowed obliteration of the enlarged medullary space and restoration of the normal mandibular anatomy. At 12 months postoperatively, the patient had significant improvement in facial contour, normal outward appearance, and stable dentition.展开更多
目的分析SH3BP2基因点突变后,与其相关的信号转导通路发生的变化,探讨巨颌症发病的分子机制。方法采用免疫荧光技术检测巨颌症患者的活化T细胞核因子(nuclear factor of activated Tcells,NFAT)家族中的NFATc1及SH3BP2蛋白在细胞内的定...目的分析SH3BP2基因点突变后,与其相关的信号转导通路发生的变化,探讨巨颌症发病的分子机制。方法采用免疫荧光技术检测巨颌症患者的活化T细胞核因子(nuclear factor of activated Tcells,NFAT)家族中的NFATc1及SH3BP2蛋白在细胞内的定位及表达含量的变化。结果巨颌症标本中NFATc1总体表达含量变化不明显,但发生了核内转位;SH3BP2在巨颌症组织中表达量增高。结论巨颌症致病基因SH3BP2发生点突变后,SH3BP2蛋白表达量可增多,并可导致NFATc1发生核内转位,这可能是导致巨颌症病变中破骨细胞被激活,形成骨吸收的重要机制。展开更多
文摘Cherubism is a rare disease characterized by significant loss of medullary bone which is replaced by excessive amounts of fibrous tissue growth within the mandible and maxilla. We present a case of a 4-year-old boy with a rapidly enlarging mandible and maxilla, causing significant change in the facial contour, malocclusion and phonation difficulties. He was treated with aggressive tumor curettage, lateral mandibular cortex osteotomies with medial repositioning. This allowed obliteration of the enlarged medullary space and restoration of the normal mandibular anatomy. At 12 months postoperatively, the patient had significant improvement in facial contour, normal outward appearance, and stable dentition.
文摘目的分析SH3BP2基因点突变后,与其相关的信号转导通路发生的变化,探讨巨颌症发病的分子机制。方法采用免疫荧光技术检测巨颌症患者的活化T细胞核因子(nuclear factor of activated Tcells,NFAT)家族中的NFATc1及SH3BP2蛋白在细胞内的定位及表达含量的变化。结果巨颌症标本中NFATc1总体表达含量变化不明显,但发生了核内转位;SH3BP2在巨颌症组织中表达量增高。结论巨颌症致病基因SH3BP2发生点突变后,SH3BP2蛋白表达量可增多,并可导致NFATc1发生核内转位,这可能是导致巨颌症病变中破骨细胞被激活,形成骨吸收的重要机制。