胃癌周围淋巴结微量元素变化的研究

目的 研究胃癌组织和癌旁淋巴结微量元素的变化及与胃癌淋巴结转移的关系。方法对40例胃癌患者的胃癌组织、癌转移及无癌转移淋巴结组织进行铁（Fe）、镁（Mg）、锰（Mn）、钙（Ca）、铜（Cu）、锌（Zn）、硒（Se）7种微量元素的测定并进行分析比较。结果胃癌组织、癌转移与无癌转移淋巴结组织中Fe、Mg、Mn、Ca含量比较，差异无统计学意义（P=0．372-0．741，均P〉0．0S）；胃癌组织与癌转移淋巴结的7种微量元素相比，差异无统计学意义（P=0．15—0．59，均P〉0．0S）；癌转移淋巴结与无癌转移淋巴结的微量元素比较，Zn、Se明显下降，Cu及Cu／Zn上升，差异有统计学意义（P=0．001-0．009，均P〈0．01）；癌转移淋巴结中N2站的Zn含量低于N1站Zn，差异有统计学意义（P=0．027）；肠型胃癌中癌转移淋巴结7种微量元素与弥漫型胃癌中癌转移淋巴结比较，差异均无统计学意义（P=0．149-0．758，均P〉0．05）。结论胃癌淋巴结转移过程中伴有体内微量元素的变化；Zn、Cu、Se含量的变化可能与胃癌淋巴结转移机制有关。

Changes of trace elements in regional lymph nodes of gastric carcinoma

OBJECTIVE: To explore the relationship between the changes of trace elements and lymphatic metastasis in gastric carcinoma. METHODS: Trace elements including Fe, Mg, Mn, Ca, Cu, Zn, Se were measured in primary gastric carcinoma and regional lymph nodes from 40 patients with gastric carcinoma, and compared among the primary tumor, metastatic, and non-metastatic nodes. RESULTS: There were no significant differences in the contents of Fe, Mg, Mn and Ca among primary gastric tumors, regional lymph nodes with or without metastasis (P=0.372 - 0.741, P > 005), and no significant differences in the contents of all 7 trace elements between primary tumors and metastatic lymph nodes (P=0.15 - 0.59, P > 005). Compared with metastatic lymph nodes, the contents of Zn, Se significantly decreased, while Cu and Cu/Zn significantly increased (P=0.001 - 0.009, P< 0.01) in non-metastatic lymph nodes. The content of Zn in N2 positive lymph nodes was significant lower than that in N1 positive nodes (P=0.027). There were no significant difference in the contents of all 7 elements between intestinal type and diffuse type (P=0.149 - 0.758, P > 0.05). CONCLUSIONS: Lymphatic metastasis of gastric cancer is concomitant with the changes of trace elements, and the changes of Zn, Cu, Se may be related with lymphatic metastasis.