Polyamine oxidase activity and polyamine levels in human colorectal cancer and in normal surrounding mucosa.

Abstract

BACKGROUND:

Polyamine oxidase (PAO) is an enzyme involved in the interconversion pathway of polyamines, compounds required for cell proliferation and differentiation. As the role of PAO in tumor growth is unclear, and no data about PAO activity in human colorectal carcinoma are available, our aim was to investigate PAO activity and polyamine levels in this kind of tumor.

METHODS:

Polyamine levels and PAO activity were detected in 30 neoplastic colorectal samples and surrounding mucosa by HPLC.

RESULTS:

Free and N1-acetylated polyamine levels were higher in the neoplastic tissue than surrounding mucosa of the same patient. On the contrary, PAO activity was significantly lower in the neoplastic tissue than surrounding mucosa.

CONCLUSION:

It seems that PAO activity does not play an important role in the increased free polyamine levels in human colorectal carcinoma. Instead, the low PAO activity observed in our study let us to hypothesize that polyamine analogues can have an antitumoral effect on colorectal carcinoma.

• Authors: M Linsalata, A Cavallini, A Di Leo
• Journal: Anticancer research (Anticancer Res) 1997 Sep-Oct Vol. 17 Issue 5B Pg. 3757-60 ISSN: 0250-7005 [Print] Greece
• PMID: 9427775 (Publication Type: Journal Article)

Chemical References

• Neoplasm Proteins
• Polyamines
• Oxidoreductases Acting on CH-NH Group Donors
• polyamine oxidase

Topics

• Adult
• Aged
• Aged, 80 and over
• Colorectal Neoplasms (chemistry, enzymology)
• Female
• Humans
• Intestinal Mucosa (chemistry, enzymology)
• Male
• Middle Aged
• Neoplasm Proteins (analysis)
• Oxidoreductases Acting on CH-NH Group Donors (analysis)
• Polyamines (analysis)