Abstract:
AIM:To explore the correlation between expression of somatostatin (SS), gastrin (GAS) and cell apoptosis regulation gene bcl-2/bax in large intestine carcinoma. METHODS:Sixty-two large intestine cancer tissue samples were randomly and retrospectively selected from patients with large intestine carcinoma. Immunohistochemical staining for bcl-2, bax, GAS, SS was performed according to the standard streptavidin-biotin-peroxidase (S-P) method. According to the semi-quantitative integral evaluation, SS and GAS were divided into three groups as follows. Scores 1-3 were defined as the low expression group, 4-8 as the intermediate expression group, 9-16 as the high expression group. Bax and bcl-2 protein expressions in different GAS and SS expression groups of large intestine carcinoma were assessed. RESULTS:The positive expression rate of bax had a prominent difference between SS and GAS high, intermediate and low expression groups (P<0.05, chi(2)(SS) = 9.246; P<0.05, chi(2)(GAS) = 6.981). The positive expression rate of bax in SS high (80.0%, 8/10) and intermediate (76.5%, 13/17) expression groups was higher than that in low expression group (40.0%, 14/35) (P<0.05, chi(2)( high vs low ) = 5.242; P<0.05, chi(2)( middle vs low ) = 6.097). The positive expression rate of bax in GAS high expression group (27.3%, 3/8) was lower than that in low expression group (69.4%, 25/36) (P<0.05, chi(2) = 4.594). However, bax expression in GAS intermediate expression group (46.7%, 7/15) was lower than that in low expression group, but not statistically significant. The positive expression rate of bcl-2 had a prominent difference between SS and GAS high, intermediate and low expression groups (P<0.05, chi(2)(SS) = 7.178; P<0.05, chi(2)( GAS ) = 13.831). The positive expression rate of bcl-2 in GAS high (90.9%, 10/11) and intermediate (86.7%, 13/15) expression groups was higher than that in low expression group (44.4%, 16/36) (P<0.05, chi(2)( high vs low ) = 5.600; P<0.05, chi(2)( middle vs low ) = 7.695). However, the positive expression rate of bcl-2 in SS high (40.0%, 4/10) and intermediate (47.1%, 8/9) expression groups was lower than that in low expression group (77.1%, 27/35) (P<0.05, chi(2)( high vs low ) = 4.710; P<0.05, chi(2)( middle vs low ) = 4.706). There was a significant positive correlation between the integral ratio of GAS to SS and the integral of bcl-2 (P<0.01, r = 0.340). However, there was a negative correlation between the integral ratio of GAS to the SS and bax the integral of (P<0.05, r = -0.299). CONCLUSION:The regulation and control of gastrin, somatostatin in cell apoptosis of large intestine carcinoma may be directly related to the abnormal expression of bcl-2, bax.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Mao JD,Wu P,Xia XH,Hu JQ,Huang WB,Xu GQdoi
10.3748/wjg.v11.i5.721keywords:
subject
Has Abstractpub_date
2005-02-07 00:00:00pages
721-5issue
5eissn
1007-9327issn
2219-2840journal_volume
11pub_type
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