Lymphomas represent common hematological malignancies with increasing incidence in recent years.The major site of extranodal non-Hodgkin lymphoma is the gastrointestinal tract.Involvement of the large intestine is rar...Lymphomas represent common hematological malignancies with increasing incidence in recent years.The major site of extranodal non-Hodgkin lymphoma is the gastrointestinal tract.Involvement of the large intestine is rare in comparison to the stomach or small bowel.The disease appears later in life,predominantly in the male population.Complaints are nonspecific,requiring a high index of suspicion in order to establish the diagnosis.The treatment varies from chemotherapy alone to multimodal therapies combining surgery,chemotherapy and radiotherapy.The small number of patients with various histological subtypes and different stage at presentation results in unclear protocol for the treatment of primary colorectal lymphoma.The purpose of this paper is to review current data on primary lymphoma of the colon and rectum while analyzing reported case series and published material on the subject.展开更多
目的探讨基质细胞衍生因子-1(SDF-1)及其受体 CXCR4在非霍奇金淋巴瘤(NHL)中的表达及其与 NHL 肿瘤浸润的关系。方法采用逆转录聚合酶链反应(RT-PCR)方法检测淋巴结和骨髓基质细胞中 SDF-1α的表达,采用流式细胞术检测淋巴结和骨髓中淋...目的探讨基质细胞衍生因子-1(SDF-1)及其受体 CXCR4在非霍奇金淋巴瘤(NHL)中的表达及其与 NHL 肿瘤浸润的关系。方法采用逆转录聚合酶链反应(RT-PCR)方法检测淋巴结和骨髓基质细胞中 SDF-1α的表达,采用流式细胞术检测淋巴结和骨髓中淋巴瘤细胞 CXCR4受体的表达,并采用 Transwell 微孔隔离室实验检测淋巴瘤细胞在体外向重组人 SDF-1α(rhSDF-1α)的趋化反应。结果侵犯骨髓的 NHL 患者骨髓淋巴瘤细胞和未侵犯骨髓的 NHL 患者骨髓单个核细胞表面CXCR4受体的表达均明显高于正常骨髓(84.10±12.12,72.76±8.73和33.20±7.73,P<0.01),而NHL 患者来源于淋巴结的淋巴瘤细胞 CXCR4的表达亦显著高于反应性增生淋巴结炎患者(101.04+21.89 vs 34.81±9.90,P<0.01)。此外,被淋巴瘤侵犯的骨髓基质细胞高表达 SDF-1α,而未被淋巴瘤侵犯的骨髓及正常骨髓基质细胞表达 SDF-1α低下,二者比较差异有统计学意义(P<0.01);且 NHL 患者淋巴结基质细胞 SDF-1α的表达高于反应性增生淋巴结炎患者(P<0.01)。趋化实验发现三种不同来源的 NHL 患者淋巴结和骨髓的单个核细胞均能向 rhSDF-1α发生趋化反应,且抗 CXCR4单抗可明显抑制上述细胞的迁移。结论 SDF-1/CXCR4生物学轴是介导 NHL 肿瘤侵袭的重要机制,CXCR4在淋巴瘤细胞表面以及 SDF-1在淋巴瘤转移部位的同时高表达与 NHL 瘤细胞的转移和浸润密切相关。展开更多
文摘Lymphomas represent common hematological malignancies with increasing incidence in recent years.The major site of extranodal non-Hodgkin lymphoma is the gastrointestinal tract.Involvement of the large intestine is rare in comparison to the stomach or small bowel.The disease appears later in life,predominantly in the male population.Complaints are nonspecific,requiring a high index of suspicion in order to establish the diagnosis.The treatment varies from chemotherapy alone to multimodal therapies combining surgery,chemotherapy and radiotherapy.The small number of patients with various histological subtypes and different stage at presentation results in unclear protocol for the treatment of primary colorectal lymphoma.The purpose of this paper is to review current data on primary lymphoma of the colon and rectum while analyzing reported case series and published material on the subject.
文摘目的探讨基质细胞衍生因子-1(SDF-1)及其受体 CXCR4在非霍奇金淋巴瘤(NHL)中的表达及其与 NHL 肿瘤浸润的关系。方法采用逆转录聚合酶链反应(RT-PCR)方法检测淋巴结和骨髓基质细胞中 SDF-1α的表达,采用流式细胞术检测淋巴结和骨髓中淋巴瘤细胞 CXCR4受体的表达,并采用 Transwell 微孔隔离室实验检测淋巴瘤细胞在体外向重组人 SDF-1α(rhSDF-1α)的趋化反应。结果侵犯骨髓的 NHL 患者骨髓淋巴瘤细胞和未侵犯骨髓的 NHL 患者骨髓单个核细胞表面CXCR4受体的表达均明显高于正常骨髓(84.10±12.12,72.76±8.73和33.20±7.73,P<0.01),而NHL 患者来源于淋巴结的淋巴瘤细胞 CXCR4的表达亦显著高于反应性增生淋巴结炎患者(101.04+21.89 vs 34.81±9.90,P<0.01)。此外,被淋巴瘤侵犯的骨髓基质细胞高表达 SDF-1α,而未被淋巴瘤侵犯的骨髓及正常骨髓基质细胞表达 SDF-1α低下,二者比较差异有统计学意义(P<0.01);且 NHL 患者淋巴结基质细胞 SDF-1α的表达高于反应性增生淋巴结炎患者(P<0.01)。趋化实验发现三种不同来源的 NHL 患者淋巴结和骨髓的单个核细胞均能向 rhSDF-1α发生趋化反应,且抗 CXCR4单抗可明显抑制上述细胞的迁移。结论 SDF-1/CXCR4生物学轴是介导 NHL 肿瘤侵袭的重要机制,CXCR4在淋巴瘤细胞表面以及 SDF-1在淋巴瘤转移部位的同时高表达与 NHL 瘤细胞的转移和浸润密切相关。
