AIM To evaluate the prognostic value of the tumor-stroma ratio(TSR) in rectal cancer.METHODS TSR was determined on hematoxylin and eosin stained histological sections of 154 patients treated for rectal adenocarcinoma ...AIM To evaluate the prognostic value of the tumor-stroma ratio(TSR) in rectal cancer.METHODS TSR was determined on hematoxylin and eosin stained histological sections of 154 patients treated for rectal adenocarcinoma without prior neoadjuvant treatment in the period 1996-2006 by two observers to assessreproducibility. Patients were categorized into three categories: TSR-high [carcinoma percentage(CP) ≥ 70%], TSR-intermediate(CP 40%, 50% and 60%) and TSR-low(CP ≤ 30%). The relation between categorized TSR and survival was analyzed using Cox proportional hazards model.RESULTS Thirty-six(23.4%) patients were scored as TSR-low, 70(45.4%) as TSR-intermediate and 48(31.2%) as TSRhigh. TSR had a good interobserver agreement(κ = 0.724, concordance 82.5%). Overall survival(OS) and disease free survival(DFS) were significantly better for patients with a high TSR(P = 0.01 and P = 0.02, respectively). A similar association existed for disease specific survival(P = 0.06). In multivariate analysis, patients without lymph node metastasis and an intermediate TSR had a higher risk of dying from rectal cancer(HR = 5.27, 95%CI: 1.54-18.10), compared to lymph node metastasis negative patients with a high TSR. This group also had a worse DFS(HR = 6.41, 95%CI: 1.84-22.28). An identical association was seen for OS. These relations were not seen in lymph node metastasis positive patients. CONCLUSION The TSR has potential as a prognostic factor for survival in surgically treated rectal cancer patients, especially in lymph node negative cases.展开更多
目的:探讨子宫内膜癌肿瘤微环境内IGFBP-3表达与肿瘤-间质相互作用的关系,以及IGFBP-3表达对子宫内膜癌侵袭能力的影响。方法:免疫组化法检测子宫内膜癌、正常子宫内膜组织中IGFBP-3的表达情况。肿瘤相关成纤维细胞(CAF)、正常内膜成纤...目的:探讨子宫内膜癌肿瘤微环境内IGFBP-3表达与肿瘤-间质相互作用的关系,以及IGFBP-3表达对子宫内膜癌侵袭能力的影响。方法:免疫组化法检测子宫内膜癌、正常子宫内膜组织中IGFBP-3的表达情况。肿瘤相关成纤维细胞(CAF)、正常内膜成纤维细胞(NF)与子宫内膜癌Ishikawa细胞在Transwell小室内共培养,RT-PCR、ELISA法检测IGFBP-3表达水平的改变。Transwell侵袭实验评估IGFBP-3表达改变对Ishikawa细胞侵袭能力的影响。结果:子宫内膜癌组织中IGFBP-3表达显著低于正常子宫内膜组织(P<0.01)。CAF、NF与Ishikawa细胞共培养后,两种间质成纤维细胞中IGFBP-3 mRNA表达水平均显著下降(P<0.01);而在Ishikawa细胞,CAF可使其IGFBP-3 mRNA表达显著降低(P<0.01),但NF对其无显著影响(P>0.05)。CAF、NF均能促进Ishikawa细胞的侵袭能力;与单Ishikawa细胞组和NF+Ishikawa共培养组相比,CAF共培养能显著增加Ishikawa细胞的侵袭能力(113.33±8.50 vs 65.17±10.23、75.33±8.21,P<0.01)。而加入外源性重组人IGFBP-3后,能显著抑制CAF的促侵袭作用。结论:子宫内膜癌肿瘤与间质相互作用可导致肿瘤微环境内IGFBP-3表达下降,而肿瘤微环境IGFBP-3表达的改变与子宫内膜癌的生长、侵袭和转移密切相关。展开更多
文摘AIM To evaluate the prognostic value of the tumor-stroma ratio(TSR) in rectal cancer.METHODS TSR was determined on hematoxylin and eosin stained histological sections of 154 patients treated for rectal adenocarcinoma without prior neoadjuvant treatment in the period 1996-2006 by two observers to assessreproducibility. Patients were categorized into three categories: TSR-high [carcinoma percentage(CP) ≥ 70%], TSR-intermediate(CP 40%, 50% and 60%) and TSR-low(CP ≤ 30%). The relation between categorized TSR and survival was analyzed using Cox proportional hazards model.RESULTS Thirty-six(23.4%) patients were scored as TSR-low, 70(45.4%) as TSR-intermediate and 48(31.2%) as TSRhigh. TSR had a good interobserver agreement(κ = 0.724, concordance 82.5%). Overall survival(OS) and disease free survival(DFS) were significantly better for patients with a high TSR(P = 0.01 and P = 0.02, respectively). A similar association existed for disease specific survival(P = 0.06). In multivariate analysis, patients without lymph node metastasis and an intermediate TSR had a higher risk of dying from rectal cancer(HR = 5.27, 95%CI: 1.54-18.10), compared to lymph node metastasis negative patients with a high TSR. This group also had a worse DFS(HR = 6.41, 95%CI: 1.84-22.28). An identical association was seen for OS. These relations were not seen in lymph node metastasis positive patients. CONCLUSION The TSR has potential as a prognostic factor for survival in surgically treated rectal cancer patients, especially in lymph node negative cases.
文摘目的:探讨子宫内膜癌肿瘤微环境内IGFBP-3表达与肿瘤-间质相互作用的关系,以及IGFBP-3表达对子宫内膜癌侵袭能力的影响。方法:免疫组化法检测子宫内膜癌、正常子宫内膜组织中IGFBP-3的表达情况。肿瘤相关成纤维细胞(CAF)、正常内膜成纤维细胞(NF)与子宫内膜癌Ishikawa细胞在Transwell小室内共培养,RT-PCR、ELISA法检测IGFBP-3表达水平的改变。Transwell侵袭实验评估IGFBP-3表达改变对Ishikawa细胞侵袭能力的影响。结果:子宫内膜癌组织中IGFBP-3表达显著低于正常子宫内膜组织(P<0.01)。CAF、NF与Ishikawa细胞共培养后,两种间质成纤维细胞中IGFBP-3 mRNA表达水平均显著下降(P<0.01);而在Ishikawa细胞,CAF可使其IGFBP-3 mRNA表达显著降低(P<0.01),但NF对其无显著影响(P>0.05)。CAF、NF均能促进Ishikawa细胞的侵袭能力;与单Ishikawa细胞组和NF+Ishikawa共培养组相比,CAF共培养能显著增加Ishikawa细胞的侵袭能力(113.33±8.50 vs 65.17±10.23、75.33±8.21,P<0.01)。而加入外源性重组人IGFBP-3后,能显著抑制CAF的促侵袭作用。结论:子宫内膜癌肿瘤与间质相互作用可导致肿瘤微环境内IGFBP-3表达下降,而肿瘤微环境IGFBP-3表达的改变与子宫内膜癌的生长、侵袭和转移密切相关。
