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Objective To investigate the expression of E-cadherin (E-cad), CD44v6 and VEGF-C in esophageal carcinoma and investigate their relationship with lymph node metastasis. Methods The expression of E-cad, CD44v6 and VEGF-C was detected with immunohistochemical EnVision method in 56cases of esophageal carcinoma and 12 cases of normal esophageal mucosa. Results Among 56 cases of esophageal carcinoma, the positive expression rates of E-cad in esophageal carcinoma was 55.4 %(31/56),significantly lower than that in normal esophageal mucosa 100.0 %(12/12) (P ＜0.05). The positive expression rates of CD44v6 and VEGF-C were 71.4 % (40/56) and 62.5 % (35/56), significantly higher than that in normal esophageal mucosa (P ＜0.05). The positive rates of E-cad was 31.3 % (10/32) in the group of positive lymph node metastasis, significantly lower than that in the group of positive non-lymph-node metastasis 87.5 % (21/24) (P＜0.05). The positive rates of CD44v6 and VEGF-C were 84.4 % (27/32) and 75.0 % (24/32) in the group of positive lymph node metastasis ,significantly higher than that in the group of positive non-lymph-node metastasis 54.2 % (13/24) and 45.8 %(11/24) (P＜0.05). E-cad was negatively correlated with lymph node metastasis; CD44v6 and VEGF-C were positively correlated with lymph node metastasis (P ＜0.05). Conclusion E-cad, CD44v6 and VEGF-C play important roles in the process of soakage and metastasis of esophageal carcinoma. The combined detection of E-cad, CD44v6 and VEGF-C can help to prodict biological behaviors and prognosis of esophageal carcinoma.
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Objective To find up a suitable beginning scan time so that to assure the image quantity during CTA of brain.Methods 30volunteers were checked by heart colour sonography first,then CTA at earlier stage was done,when the density in basilar artery high up to120 HU,that time was regarded the time as beginning scan time,the relative curve between beginning scan time and ejection fraction(EF) was drew,according to this relative curve,34 patients were examined by CTA,the displaying situation of vessel was evaluated comparatively with DSA in part of patients.Results According to this method,the successful rate of CTA in patient’s group was 100%,the trunk of brain vessel and its 1~3 level branch were showed in 100%,the 4~5 level branch of middle cerebal artery showed in 94.1%(32/34).Conclusion According to EF of heart to determine the beginning scan time of CTA is practical,that the image quantity of CTA can be assured.