BACKGROUND Differential diagnosis among atypical hyperplasia(AH)(including reparative hyperplasia and intestinal metaplasia),low-grade dysplasia(LGD),high-grade dysplasia(HGD),and adenocarcinoma(AC)in gastric mucosal ...BACKGROUND Differential diagnosis among atypical hyperplasia(AH)(including reparative hyperplasia and intestinal metaplasia),low-grade dysplasia(LGD),high-grade dysplasia(HGD),and adenocarcinoma(AC)in gastric mucosal biopsies is challenging due to histomorphological overlaps,variability in pathological diagnosis consistency,and limited reproducibility.AIM To evaluate the diagnostic utility of P53,Ki67,P504S,and IMP3 in gastric cancer and its precancerous lesions,focusing on their effectiveness in distinguishing AH,LGD,HGD,and AC.METHODS From January 2018 to September 2020,a total of 185 gastric mucosal biopsy specimens were analyzed according to the pathological diagnostic criteria outlined in the World Health Organization Classification of Digestive System Tumors(2019).The specimens were categorized into four groups:AH,LGD,HGD,and AC.Immunohistochemistry was employed to assess the expression status of P53,Ki67,P504S,and IMP3.Intergroup comparisons were performed using theχ^(2)test or Fisher's exact probability test to compare the differences in immunohistochemical markers across the distinct lesion groups.RESULTS The expression rate of P504S was highest in the LGD group(53.3%,16/30),while IMP3 expression was highest in the AC group(41.9%,26/62),followed by the HGD group(33.3%).Significant differences in P504S and IMP3 expression levels were observed among the four lesion groups(P<0.001).Pairwise comparisons revealed statistically significant differences in P504S expression between the AH group and the LGD,HGD,and AC groups(P<0.001),as well as significant variations in IMP3 expression between the AH group and the HGD and AC groups,and between the LGD group and the HGD and AC groups(P<0.001).Additionally,significant correlations were found between P504S and the polarity expression pattern of Ki67,and between IMP3 and the mutation expression pattern of P53(P<0.001).The combined detection of P504S with Ki67 and IMP3 with P53 increased the diagnostic sensitivity for LGD and HGD/AC,respectively.CONCLUSION P504S is highly expressed in LGD and is associated with the Ki67“polarity”expression pattern.IMP3 is highly expressed in HGD/AC and is correlated with the P53 mutation expression pattern.The combined detection of P504S with Ki67 and IMP3 with P53 increased the diagnostic sensitivity for LGD and HGD/AC,respectively.The rational use of P504S,Ki67,IMP3,and p53 can help distinguish gastric cancer and precancerous lesions,improving the early cancer diagnosis rate.展开更多
目的:探讨胰岛素样生长因子Ⅱm RNA结合蛋白3(IMP3)及胰岛素样生长因子-2(IGF2)在不同类型胶质瘤中的表达及意义。方法:采用免疫组化S-P法观察98例胶质瘤标本及20例非瘤脑组织中IMP3和IGF2蛋白的表达情况,分析二者的表达与不同临床病理...目的:探讨胰岛素样生长因子Ⅱm RNA结合蛋白3(IMP3)及胰岛素样生长因子-2(IGF2)在不同类型胶质瘤中的表达及意义。方法:采用免疫组化S-P法观察98例胶质瘤标本及20例非瘤脑组织中IMP3和IGF2蛋白的表达情况,分析二者的表达与不同临床病理特征的关系;并随机选取IMP3及IGF2不同程度阳性表达病例行IMP3和IGF2 m RNA原位杂交检测。结果:在不同类型胶质瘤组织中IMP3蛋白、IGF2蛋白及IMP3 m RNA均呈高表达,除少突胶质细胞瘤外,二者在Ⅲ级肿瘤组织中的表达水平均明显高于Ⅱ级(P<0.05);在胶质母细胞瘤中二者的表达水平最高。IGF2 m RNA在不同类胶质瘤中均有表达,但在Ⅱ级、Ⅲ级肿瘤组织及胶质母细胞瘤之间表达差异无统计学意义(P>0.05)。IMP3、IGF2蛋白的阳性表达水平与患者年龄、肿瘤病理级别及术后生存时间关系密切(P<0.05)。结论:IMP3和IGF2对胶质瘤的恶性进展、患者预后存在一定影响,两者可能成为脑胶质瘤诊断和治疗的特异靶点。展开更多
基金Supported by The Science and Technology Research Project of Anyang,No.2022C01SF074。
文摘BACKGROUND Differential diagnosis among atypical hyperplasia(AH)(including reparative hyperplasia and intestinal metaplasia),low-grade dysplasia(LGD),high-grade dysplasia(HGD),and adenocarcinoma(AC)in gastric mucosal biopsies is challenging due to histomorphological overlaps,variability in pathological diagnosis consistency,and limited reproducibility.AIM To evaluate the diagnostic utility of P53,Ki67,P504S,and IMP3 in gastric cancer and its precancerous lesions,focusing on their effectiveness in distinguishing AH,LGD,HGD,and AC.METHODS From January 2018 to September 2020,a total of 185 gastric mucosal biopsy specimens were analyzed according to the pathological diagnostic criteria outlined in the World Health Organization Classification of Digestive System Tumors(2019).The specimens were categorized into four groups:AH,LGD,HGD,and AC.Immunohistochemistry was employed to assess the expression status of P53,Ki67,P504S,and IMP3.Intergroup comparisons were performed using theχ^(2)test or Fisher's exact probability test to compare the differences in immunohistochemical markers across the distinct lesion groups.RESULTS The expression rate of P504S was highest in the LGD group(53.3%,16/30),while IMP3 expression was highest in the AC group(41.9%,26/62),followed by the HGD group(33.3%).Significant differences in P504S and IMP3 expression levels were observed among the four lesion groups(P<0.001).Pairwise comparisons revealed statistically significant differences in P504S expression between the AH group and the LGD,HGD,and AC groups(P<0.001),as well as significant variations in IMP3 expression between the AH group and the HGD and AC groups,and between the LGD group and the HGD and AC groups(P<0.001).Additionally,significant correlations were found between P504S and the polarity expression pattern of Ki67,and between IMP3 and the mutation expression pattern of P53(P<0.001).The combined detection of P504S with Ki67 and IMP3 with P53 increased the diagnostic sensitivity for LGD and HGD/AC,respectively.CONCLUSION P504S is highly expressed in LGD and is associated with the Ki67“polarity”expression pattern.IMP3 is highly expressed in HGD/AC and is correlated with the P53 mutation expression pattern.The combined detection of P504S with Ki67 and IMP3 with P53 increased the diagnostic sensitivity for LGD and HGD/AC,respectively.The rational use of P504S,Ki67,IMP3,and p53 can help distinguish gastric cancer and precancerous lesions,improving the early cancer diagnosis rate.
文摘目的:探讨胰岛素样生长因子Ⅱm RNA结合蛋白3(IMP3)及胰岛素样生长因子-2(IGF2)在不同类型胶质瘤中的表达及意义。方法:采用免疫组化S-P法观察98例胶质瘤标本及20例非瘤脑组织中IMP3和IGF2蛋白的表达情况,分析二者的表达与不同临床病理特征的关系;并随机选取IMP3及IGF2不同程度阳性表达病例行IMP3和IGF2 m RNA原位杂交检测。结果:在不同类型胶质瘤组织中IMP3蛋白、IGF2蛋白及IMP3 m RNA均呈高表达,除少突胶质细胞瘤外,二者在Ⅲ级肿瘤组织中的表达水平均明显高于Ⅱ级(P<0.05);在胶质母细胞瘤中二者的表达水平最高。IGF2 m RNA在不同类胶质瘤中均有表达,但在Ⅱ级、Ⅲ级肿瘤组织及胶质母细胞瘤之间表达差异无统计学意义(P>0.05)。IMP3、IGF2蛋白的阳性表达水平与患者年龄、肿瘤病理级别及术后生存时间关系密切(P<0.05)。结论:IMP3和IGF2对胶质瘤的恶性进展、患者预后存在一定影响,两者可能成为脑胶质瘤诊断和治疗的特异靶点。
