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N Ando

Publications and source records attributed to N Ando.

At least 199 records · Page 11Linked to original sources
PubMedDate not supplied

Clinical application of K-ras oncogene mutations in pancreatic carcinoma: detection of micrometastases.

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.

Adenocarcinoma↗
PubMedDate not supplied

Micronucleus test with cyclophosphamide using mouse peripheral blood reticulocytes.

The usefulness of the micronucleus test using supravital staining of peripheral blood reticulocytes with acridine orange was evaluated in two laboratories after administering cyclophosphamide (CYP) as a model chemical by intraperitoneal injection (i.p.) to CD-1 mice. The frequencies of micronucleated peripheral reticulocytes (MNRETs) increased dose-dependently at each sampling time. There were no significant differences in the results obtained with this new method by the two laboratories. Although the induction of MNRETs was delayed by about 24 h compared to that of micronucleated polychromatic erythrocytes (MNPCEs) in the bone marrow, the frequencies of MNRETs and MNPCEs were almost identical at each optical sampling time, 24 h for MNPCEs and 48 h for MNRETs. Therefore, it is concluded that this method is a suitable alternative to that using femoral marrow cells.

Animals↗