## Background: Many patients with carcinoma of the pancreas die because their disease is not detected until late in its course. methods that detect these cancers earlier will improve patient outcome. over 80% of pancreatic carcinomas contain mutations in codon 12 of the k-ras gene. screening duoden
Clinical application of K-ras oncogene mutations in pancreatic carcinoma: Detection of micrometastases
โ Scribed by Shuji Nomoto; Akimasa Nakao; Nobuhisa Ando; Shin Takeda; Yasushi Kasai; Soichiro Inoue; Tetsuya Kaneko; Hiroshi Takagi
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 46 KB
- Volume
- 15
- Category
- Article
- ISSN
- 8756-0437
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โฆ Synopsis
Pancreatic adenocarcinomas are known to have a high incidence of K-ras gene mutation. We summarize our efforts to detect micrometastases through a search for mutated K-ras oncogene in liver tissues, peritoneal washings, para-aortic lymph nodes, and perioperative peripheral blood. Two-stage polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) analysis were used to detect K-ras oncogene mutations at codon 12. Our results suggest that PCR/RFLP analysis is potentially highly sensitive for the detection of micrometastases in various tissues and might be of value in the diagnosis, treatment and follow-up of metastases in other organs with pancreatic adenocarcinoma.
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Detection of K
We have developed a rapid and highly sensitive method for the detection of mutant K-ras codon 12 allele in the presence of 10 5 copies of the wild-type alleles. This sensitivity is achieved by selective amplification of mutant K-ras sequences, using a two-stage procedure with modified primers. In th
BACKGROUND. K-ras mutations at codon 12 (KRM) have been detected in over 80% of tissues and pure pancreatic juice (PPJ) samples from patients with pancreatic carcinoma (PCa) and are promising genetic tumor markers. Aspirating PPJ not only requires technical skill, but is also exhausting for patients