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• W1966093207 abstract "It has been shown that Fe is required by HIV-infected cells for production of viral particles. Excess iron in the cell is detrimental to the host but beneficial to the pathogen. Here, we investigated the effect of excess Fe (overload) and chelation of the metal on in vitro HIV infection by assessing host cell responses (viability/death, stress protein expression and cytokine production) as well as virus replication (core protein content and enzyme activity). Excess iron decreased viability (21%, P < 0.01) of HIV-infected cells, increased p24 levels by 8.6% (P = 0.32) and elevated reverse transcriptase (RT) activity (81.7%, P < 0.01). The stimulation of viral replication was decreased when Fe was first complexed to desferrioxamine (DFO). DFO alone (in the absence of excess Fe), lowered cell viability (35%, P = 0.039) and in the presence of virus lowered both p24 levels (66%, P = 0.054) and RT activity (43%, P < 0.01) and unexpectedly increased cell viability (25%, P = 0.01047). Interleukin-2 (IL-2) production of infected cells was completely inhibited by DFO and excess iron while stress protein (Hsp70) levels were lowered in the presence of HIV in combination with excess iron (37%, P < 0.01) or DFO (47.2%, P < 0.01) when compared to untreated cells. According to flow cytometric data, HIV infection caused a two-fold increase in the numbers of necrotic (P = 0.006) and decreased apoptotic cells (28.5%, P = 0.15) cells. These findings indicate that Fe overload associated with HIV infection is detrimental to host cell responses against viral infection and that chelation can prevent and/or reverse this effect." @default.
• W1966093207 created "2016-06-24" @default.
• W1966093207 creator A5008005299 @default.
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• W1966093207 date "2004-12-01" @default.
• W1966093207 modified "2023-10-16" @default.
• W1966093207 title "The effect of iron overload on in vitro HIV-1 infection" @default.
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• W1966093207 doi "https://doi.org/10.1016/j.jcv.2004.09.011" @default.
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