Interference of Yiqijiedu formula in DNP inducing effects on the occurrence of precancerous lesions of nasal and nasopharyngeal epithelia in TgN(p53mt-LMP1)/HT transgenic mice
- VernacularTitle:益气解毒方对DNP诱导TgN(p53mt-LMP1)/HT小鼠鼻腔/鼻咽上皮癌前病变及p16和c-jun基因表达的影响
- Author:
Yingchun HE
;
Fangguo LU
;
Daofa TIAN
;
Gang LIU
- Publication Type:Journal Article
- Keywords:
nasal epithelia;
nasopharyngeal epithelia;
precancerous lesions;
Yiqijiedu formula;
c-Jun;
p16
- From:China Oncology
2006;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Background and purpose:The development of nasopharyngeal carcinoma in rat and transformation of embryo nasophryngeal epithelia induced by N,N'-dinitrosopiperazine (DNP) were interfered by Yiqijiedu formular medicine via inhibiting telomerase. We investigated the impact of Yiqijiedu formula on precancerous lesion of nasal and nasopharyngeal epithelia in TgN (p53mt-LMP1) / HT mice induced by DNP and on its expression level of c-jun and p16 genes. Methods:The fourth generation TgN (p53mt-LMP1) / HT mice aged 5 months were randomly divided into 2 groups:(1)TgN(p53mt-LMP1)/HT cancerous lesion-inducing group (group A) was treated by normal saline with 15ml/kg, and Chinese traditional medicine treating group (group B) was treated by Yiqijiedu formular drug with 12.91 g/(kg?d). C57BL/6J wild-type mice were chosen as negative control group (group C) treated by normal saline with 15ml/kg. Epithelial tissue samples were taken from nasal cavity and nasopharyngnx of mice respectively for pathohistological evaluation by H-E staining procedures, and expression level of c-Jun and p16 in these tissue sampleswere determined by immunohistochemical methods and western blot. Results:The occurrence rates of precancerous lesions in nasal and/or nasopharyngeal epithelia in Group C, A and B were 0, 90% and 10% respectively (P
