摘要
Objective To analyze the loss of heterozygosity (LOH) for markers on chromosew 22 (CHR 22 ) and its significance with their clinical behaviors. Methods The frequency of CHR22 LOH in 36 schwannomas was observed by denatured polyacrylamide gels and silver staining, and the proliferative index of schwannoma wes calculated by Ki-67 and PCNA immunohistochemistry. Results 15 schwannomas (41. 6% ) shawed allele lass. The proliferative index of schwannomas with LOH were significantly higher than those without LOH (P< 0. 05). In acoustic neuromas, patients with LOH were younger at the age of diagnosis, larger size of tumor, shorter history and higher growth rate than those without LOH, but with no significance. Conclusion CHR22 IDH was the frequent event in the tumorigenesis of sporadic schwannoma. There were some links beteen CHR22 LOH and clinical behavior.
Objective To analyze the loss of heterozygosity ( LOH) for markers on chromosome 22 ( CHR 22 ) and its significance with their clinical behaviors. Methods The frequency of CHR22 LOH in 36 schwannomas was observed by dena tured polyacrylamide gels and silver staining, and the proliferative index of schwannoma was calculated by Ki-67 and PCNA im munohistochemistry. Results 15 schwannomas (41.6%) showed allele loss. The proliferative index of schwannomas with LOH were significantly higher than those without LOH (P<0.05). In acoustic neuromas, patients with LOH were younger at the age of diagnosis, larger size of tumor, shorter history and higher growth rate than those without LOH, but with no signifi cance. Conclusion CHR22 LOH was the frequent event in the tumorigenesis of sporadic schwannoma. There were some links between CHR22 LOH and clinical behavior.
