Upregulation of PPARgamma in tissue with gastric carcinoma.
Here we have for the first time investigated the expression of peroxisome proliferator-activated receptor gamma (PPARgamma) in chronic gastritis, gastric mucosal dysplasia, and gastric carcinoma. Avidin-biotin peroxidase complex immunohistochemical methods were adopted to examine the expression of PPARgamma in 53 patients with gastric carcinoma, 18 with gastric mucosal dysplasia, 30 with chronic atrophic gastritis, and 31 with chronic non-atrophic gastritis. The positive rate of PPARgamma was 41.5% in gastric carcinoma, 27.8% in gastric mucosal dysplasia, 10.0% in chronic atrophic gastritis, and 6.5% in chronic non-atrophic gastritis, respectively. Compared with those in chronic gastritis, expression of PPARgamma in gastric mucosal dysplasia and gastric carcinoma was significantly enhanced (p < 0.05). In gastric carcinoma, expression of PPARgamma was not associated with tumor cell differentiation and metastasis to lymph nodes (p > 0.05). Taken together, overexpression of PPARgamma was apparent in human gastric cancer, which might be an early event in carcinogenesis.
Yao
Liping
L
State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University of China, Xi'an, Shaanxi Province, China.
Liu
Fei
F
Sun
Li
L
Wu
Hanping
H
Guo
Changcun
C
Liang
Shuhui
S
Liu
Lili
L
Liu
Na
N
Han
Zheyi
Z
Zhang
Hongbo
H
Wu
Kaichun
K
Fan
Daiming
D
D000328:Adult; D000368:Aged; D002454:Cell Differentiation; D005260:Female; D005753:Gastric Mucosa / Q000378:metabolism* / Q000473:pathology; D005756:Gastritis / Q000378:metabolism* / Q000473:pathology; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D008875:Middle Aged; D047495:PPAR gamma / Q000378:metabolism*; D011379:Prognosis; D013274:Stomach Neoplasms / Q000378:metabolism*; D015854:Up-Regulation; D055815:Young Adult
D047495:PPAR gamma