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- Title
Inhibitory action of melatonin on H2O2- and cyclophosphamide-induced DNA damage.
- Authors
De Salvia, R.; Fiore, M.; Aglitti, T.; Festa, F.; Ricordy, R.; Cozzi, R.
- Abstract
Melatonin, the pineal gland hormone known for its ability to modulate circadian rhythm, has recently been studied in its several functions. It is believed to inhibit cancer growth, to stimulate the immune system and to act as an antioxidant. In particular, this latter activity is ascribed to two different mechanisms: stimulation of radical detoxifying enzymes and scavenging of free radicals. We used this compound in mammalian cells in vitro to investigate its mechanism of action in modulating DNA damage. Cytogenetic and cytofluorimetric analyses were performed. We show that melatonin is able to modulate chromosome damage (chromosomal aberrations and sister chromatid exchanges) induced by cyclophosphamide. Conversely, its involvment in modulating oxidative processes, thereby reducing DNA damage, is less clear. In particular, melatonin is able to decrease H2O2-induced chromosomal aberrations but not sister chromatid exchanges and has been found to induce oxygen species in a cytofluorimetric test (DCFH assay).
- Subjects
BIOCHEMICAL genetics; GENETIC mutation; DNA damage; CHROMOSOME abnormalities; CHROMOSOME replication; FREE radicals; PHOTOSYNTHETIC oxygen evolution
- Publication
Mutagenesis, 1999, Vol 14, Issue 1, p107
- ISSN
0267-8357
- Publication type
Article
- DOI
10.1093/mutage/14.1.107