Up-regulation of cyclooxygenase-2 in squamous carcinogenesis of the esophagus.

Up-regulation of cyclooxygenase-2 in squamous carcinogenesis of the esophagus.
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食管鳞状细胞癌发生过程中环氧合酶-2 的上调。

DOI:
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发表时间:
2000
影响因子:
11.5
通讯作者:
Morito Monden
Morito Monden
中科院分区:
医学1区
文献类型:
--
作者:
A. Shamma;Hirofumi Yamamoto;Y. Doki;J. Okami;M. Kondo;Y. Fujiwara;Masahiko Yano;M. Inoue;Nariaki Matsuura;Hitoshi Shiozaki;Morito Monden

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环氧合酶-2 (COX-2)在包括食管鳞状细胞癌(SCCs)在内的各种类型的人类恶性肿瘤中过表达,但COX-2在癌前食管鳞状不典型增生中的表达尚不清楚。为了阐明COX-2在食管癌发生中的作用,我们检测了该酶在正常鳞状上皮(n = 42)、鳞状非典型增生[高级别非典型增生(HGD, n = 41;低级别非典型增生(LGD, n = 33)]中的表达;原位癌(n = 16)、粘膜浸润性癌(n = 18)和晚期SCC (n = 45)。免疫组织化学显示,与其他病变相比,HGD中COX-2的表达明显高。COX-2评分是由COX-2染色的强度和阳性程度决定的指标(最高3.0),正常食管为0.29 +/- 0.04,LGD为1.75 +/- 0.11,HGD为2.89 +/- 0.05,CIS为2.17 +/-0.18,粘膜浸润性癌为1.95 +/- 0.22,晚期SCC为1.81 +/- 0.08。逆转录- pcr检测结果证实了免疫组化的结果。在发育不良病变中,通过增殖细胞核抗原指数评估COX-2的表达与增殖活性相关(P = 0.001),但在SCCs中则无关。COX-2在SCC中的表达与包括预后在内的各种临床病理参数无关。我们的研究结果表明COX-2是HGD的敏感标志物,提示COX-2可能参与食管鳞状癌的早期发生。
Cyclooxygenase-2 (COX-2) is overexpressed in various types of human malignancies including squamous cell carcinomas (SCCs) of the esophagus, but little is known about COX-2 expression in premalignant esophageal squamous dysplasia. To elucidate the role of COX-2 in esophageal carcinogenesis, we examined the expression of this enzyme in normal squamous epithelium (n = 42), squamous dysplasia [high-grade dysplasia (HGD, n = 41; low-grade dysplasia (LGD, n = 33)]; carcinoma in situ (n = 16), mucosal invasive carcinoma (n = 18), and advanced SCC (n = 45). Immunohistochemistry showed a significantly high COX-2 expression in HGD compared with other lesions. The COX-2 score, an index determined by intensity and positivity of COX-2 staining (maximum 3.0), was 0.29 +/- 0.04 in normal esophagus, 1.75 +/- 0.11 in LGD, 2.89 +/- 0.05 in HGD, 2.17 +/-0.18 in CIS, 1.95 +/- 0.22 in mucosal invasive carcinoma, and 1.81 +/- 0.08 in advanced SCC. Results of reverse transcription-PCR assays confirmed those obtained by immunohistochemistry. COX-2 expression correlated with proliferation activity assessed by the proliferating cell nuclear antigen index in dysplastic lesions (P = 0.001) but not in SCCs. COX-2 expression in SCC did not correlate with various clinicopathological parameters including prognosis. Our results indicate that COX-2 is a sensitive marker for HGD and suggest that COX-2 may be involved in early stages of squamous carcinogenesis of the esophagus.
DOI: 10.1093/jnci/90.6.455
发表时间: 1998-03-18
期刊: JOURNAL OF THE NATIONAL CANCER INSTITUTE
影响因子: --
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DOI: --
发表时间: 1998
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作者:
Ciaparrone,M;Yamamoto,H;Yao,Y;Sgambato,A;Cattoretti,G;Tomita,N;Monden,T;Rotterdam,H;Weinstein,IB
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DOI: 10.1016/s0016-5085(98)70196-9
发表时间: 1998-08-01
期刊: GASTROENTEROLOGY
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