Peroxynitrite decomposition catalyst prevents apoptotic cell death in a human astrocytoma cell line incubated with supernatants of HIV-infected macrophages.

Abstract:

BACKGROUND:Oxidative stress has shown to contribute in the mechanisms underlying apoptotic cell death occurring in AIDS-dementia complex. Here we investigated the role of peroxynitrite in apoptosis occurring in astroglial cells incubated with supernatants of HIV-infected human primary macrophages (M/M). RESULTS:Flow cytometric analysis (FACS) of human cultured astrocytes shortly incubated with HIV-1-infected M/M supernatants showed apoptotic cell death, an effect accompanied by pronounced staining for nitrotyrosine (footprint of peroxynitrite) and by abnormal formation of malondialdehyde (MDA). Pretreatment of astrocytes with the peroxynitrite decomposition catalyst FeTMPS antagonized HIV-related astrocytic apoptosis, MDA formation and nitrotyrosine staining. CONCLUSIONS:Taken together, our results suggest that inhibition of peroxynitrite leads to protection against peroxidative stress accompanying HIV-related apoptosis of astrocytes. Overall results support the role of peroxynitrite in HIV-related programmed death of astrocytes and suggest the use of peroxynitrite decomposition catalyst to counteract HIV-1-related neurological disorders.

journal_name

BMC Neurosci

journal_title

BMC neuroscience

authors

Muscoli C,Salvemini D,Paolino D,Iannone M,Palma E,Cufari A,Rotiroti D,Perno CF,Aquaro S,Mollace V

doi

10.1186/1471-2202-3-13

keywords:

subject

Has Abstract

pub_date

2002-09-16 00:00:00

pages

13

issn

1471-2202

journal_volume

3

pub_type

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