Đang chuẩn bị liên kết để tải về tài liệu:
Báo cáo khoa học: "Mutation and overexpression of p53 as a prognostic factor in canine mammary tumors"

Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Mutation and overexpression of p53 as a prognostic factor in canine mammary tumors | J. Vet. Sci. 2004 5 1 63-69 JOURNAL OF Veterinary Science Mutation and overexpression ofp53 as a prognostic factor in canine mammary tumors Chung-Ho Lee Wan-Hee Kim Ji-Hey Lim Min-Soo Kang1 Dae-Yong Kim1 and Oh-Kyeong Kweon Department of Veterinary Surgery College of Veterinary Medicine Seoul National University Seoul 151-742 Korea Department of Veterinary Pathology College of Veterinary Medicine Seoul National University Seoul 151-742 Korea We concentrated ourselves to evaluate the prognostic significance of the p53 gene mutations its protein expression and MIB-1 index as a proliferative marker in canine mammary tumors. In the present study a total of 20 cases were examined among which there were 5 malignant mixed tumors 4 mammary gland adenocarcinomas 1 papillary adenocarcinoma 8 benign mixed tumors and 2 mammary gland adenomas. Positive immunostaining for p53 with PAb240 antibody was found in 2 benign 20 and 3 malignant 30 tumors. However PAb421 antibody did not give positive result at all. In Western blot analysis the p53 expression in benign and malignant tumors was detected in 4 and 3 cases respectively. p53 mutations were found in 6 cases out of the cases with detected p53 protein expression. The MIB-1 index in benign and malignant tumors were 17.6 20.8 and 29.0 27.2 respectively and there was no significant difference between tumor types. There was a significant correlation between p53 mutations and p53 overexpression correlation coefficient 0.5 p 0.05 . In Kaplan-Meier survival analysis the p53 index was associated with significantly shortened survival time p 0.01 . In multivariate analysis p53 overexpression was only an independent factor for indicator of worse prognosis in canine mammary tumors p 0.01 . These results demonstrated that p53 gene mutations and protein overexpression using the PAb240 anti-p53 antibody were useful predictors of increased malignant potential and poor prognosis in canine mammary tumors. Key words canine mutation overexpression

TÀI LIỆU LIÊN QUAN

báo cáo khoa học: " Simultaneous mutation detection of three homoeologous genes in wheat by High Resolution Melting analysis and Mutation Surveyor®"

Báo cáo khoa học: "Hypertrophic cardiomyopathy in young Maine Coon cats caused by the p.A31P cMyBP-C mutation - the clinical significance of having the mutation"

Báo cáo khoa hoc:" The checkpointkinase 2 (CHK2) 1100delC germ line mutation is not associated with the development of squamous cell carcinoma of the head and neck (SCCHN)"

Báo cáo y học: "Familial Polycythemia Caused by a Novel Mutation in the Beta Globin Gene: Essential Role of P50 in Evaluation of Familial Polycythemi"

Báo cáo khoa học: "Replication and drug resistant mutation of HIV-1 subtype B' (Thailand B) variants isolated from HAART treatment individuals in China"

báo cáo khoa học: "Bilateral adrenocortical carcinoma in a patient with multiple endocrine neoplasia type 1 (MEN1) and a novel mutation in the MEN1 gene"

Báo cáo khoa học: "Three synchronous primary carcinomas in a patient with HNPCC associated with a novel germline mutation in MLH1: Case report"

Báo cáo khoa học: "Identification of a novel germ-line mutation in the TP53 gene in a Mexican family with Li-Fraumeni syndrome"

Báo cáo khoa học: "Phospho-ERK and AKT status, but not KRAS mutation status, are associated with outcomes in rectal cancer treated with chemoradiotherapy"

Báo cáo khoa học: " Role of p53 mutation in the effect of boron neutron capture therapy on oral squamous cell carcinoma"