title: Clinical significance of pyrimidine nucleoside phosphorylase in colorectal carcinoma.
abstract: The expression of pyrimidine nucleoside phosphorylase (PyNPase) mRNA in tumor (T) and normal (N) biopsy specimens obtained from 41 cases of colorectal carcinoma was examined by the reverse transcriptase/polymerase chain reaction (RT-PCR). The higher T/N ratio of the expression of PyNPase mRNA correlated significantly with the presence of lymph vessel invasion (p=0.039), the positive lymph node metastasis (p=0.014) and the advanced stage of the disease (p=0.014). There was a significant con-elation between the results determined by enzyme activity and those determined by RT-PCR (p=0.005). The findings suggested that the determination of PyNPase mRNA by RT-PCR may give useful information on tumor aggressiveness of colorectal carcinoma and this method can be used instead of enzyme activity.
authors.affiliation: KYUSHU UNIV,MED INST BIOREGULAT,DEPT SURG,BEPPU,OITA 874,JAPAN. OITA PREFECTURAL HOSP,DEPT SURG,OITA,JAPAN.
authors.forename: K
authors.initials: K
authors.lastname: Mimori
authors.forename: M
authors.initials: M
authors.lastname: Mori
authors.forename: T
authors.initials: T
authors.lastname: Shiraishi
authors.forename: M
authors.initials: M
authors.lastname: Haraguchi
authors.forename: H
authors.initials: H
authors.lastname: Ueo
authors.forename: T
authors.initials: T
authors.lastname: Akiyoshi