Objective: To investigate the expression level of E-cadherin in spinal plasma cell myeloma and its relationship with the clinicopathological indexes of spinal plasma cell myeloma. Methods: The expression of E-cadher...Objective: To investigate the expression level of E-cadherin in spinal plasma cell myeloma and its relationship with the clinicopathological indexes of spinal plasma cell myeloma. Methods: The expression of E-cadherin was detected in 41 cases of spinal plasma cell myeloma and 14 cases of simple bone cysts by using S-P (streptavidin-perosidase) immunohistochemical staining. The relationship between E-cadherin expression and the clinicopathological features was analyzed. Results: In spinal plasma cell myelomas, the positive expression rate of E-cadherin (46.34%) was higher than that in simple bone cyst tissues (all negative) (P〈0.01). And the expression of E-cadherin had no obvious relationship with patients' age, gender, clinical classification or M-component (P〉0.05), but had relationship with the classification of light chain. The expression rate in lambda chain subgroup was lower than that in the others (P〈0.05). We also found the E-cadherin negative patients had a higher overall survival rate than those who had strong E-cadherin expression (P〈0.05). Conclusion: E-cadherin expressed higher in spinal plasma cell myelomas than in simple bone cyst tissues and its expression had relationship with the light chain classification in spinal plasma cell myeloma. The patients with no stain of E-cadherin may have a poor prognosis. Detecting the type of light chain associated with expression of E-cadherin might be helpful in evaluating the outcome of spinal PCM patients.展开更多
目的 建立骨髓单个核细胞涂片胞浆轻链免疫荧光原位杂交技术(immunofluorescence of the cytoplasmic light chain in situ hybridization,cIg-FISH),检测多发性骨髓瘤(multipte myeloma,MM)患者的染色体异常,为MM患者的分子细胞遗...目的 建立骨髓单个核细胞涂片胞浆轻链免疫荧光原位杂交技术(immunofluorescence of the cytoplasmic light chain in situ hybridization,cIg-FISH),检测多发性骨髓瘤(multipte myeloma,MM)患者的染色体异常,为MM患者的分子细胞遗传学检测提供新方法.方法 以骨髓单个核细胞涂片为载体,采用8号染色体着丝粒探针进行间期荧光原位杂交技术,检测MM浆细胞(plasma cells,PCs)的8号染色体异常情况,并且通过联结7-氨基-4-甲基香豆素-3-乙酸(7-amino-4-methylcoumarin-3-acetic acid,AMCA)的抗人κ或λ轻链抗体标记MM标本中PCs,然后通过联结AMCA的二抗增强荧光效果.结果 单个核细胞涂片上胞浆荧光抗体筛选的PCs有明显的蓝色荧光,18例患者中7例(38.9%)有8号染色体异常,其中8号染色体单体(-8)5例(27.8%),8号染色体三体(+8)2例(11.1%).结论 骨髓单个核细胞涂片cIg-FISH具有简便、特异、准确的特点,可用于MM分子遗传学异常的检测.展开更多
文摘Objective: To investigate the expression level of E-cadherin in spinal plasma cell myeloma and its relationship with the clinicopathological indexes of spinal plasma cell myeloma. Methods: The expression of E-cadherin was detected in 41 cases of spinal plasma cell myeloma and 14 cases of simple bone cysts by using S-P (streptavidin-perosidase) immunohistochemical staining. The relationship between E-cadherin expression and the clinicopathological features was analyzed. Results: In spinal plasma cell myelomas, the positive expression rate of E-cadherin (46.34%) was higher than that in simple bone cyst tissues (all negative) (P〈0.01). And the expression of E-cadherin had no obvious relationship with patients' age, gender, clinical classification or M-component (P〉0.05), but had relationship with the classification of light chain. The expression rate in lambda chain subgroup was lower than that in the others (P〈0.05). We also found the E-cadherin negative patients had a higher overall survival rate than those who had strong E-cadherin expression (P〈0.05). Conclusion: E-cadherin expressed higher in spinal plasma cell myelomas than in simple bone cyst tissues and its expression had relationship with the light chain classification in spinal plasma cell myeloma. The patients with no stain of E-cadherin may have a poor prognosis. Detecting the type of light chain associated with expression of E-cadherin might be helpful in evaluating the outcome of spinal PCM patients.