ArticleAdvanced biomedical research2012
The effect of interferon γ on endothelial cell nitric oxide production and apoptosis.
Article in Advanced biomedical research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 24 citations in OpenAlex.
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- Positive Feedback Cycle of TNFα Promotes Staphylococcal Enterotoxin B-Induced THP-1 Cell Apoptosis.Frontiers in cellular and infection microbiology · 2016Article
- Increases in interleukin-6 and interferon-gamma levels is progressive in immature rats with varicocele.Irish journal of medical science · 2015Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNitric oxide (NO) is an important molecule in maintaining endothelial survival and normal function. It is a unique mediator, which may promote or suppress both inflammation and apoptosis. Endothelial cell (EC) injury, dysfunction, and death in response to cytokines, especially interferon gamma (IFN-γ), represent the critical event for the initiation of several inflammatory diseases. OBJECTIVE(S): EC injury or death result in endothelial dysfunction that precedes the development of atherosclerosis and its subsequent vascular events. We examine the effect of different concentrations of IFN-γ on human umbilical vein ECs (HUVECs) NO production and apoptosis. MATERIALS AND
methodsHUVECs were cultured at 37°C for 24 h in the absence (control) or presence of 10, 100, and 1000 μg IFN-γ, respectively. The apoptotic cells were determined as annexin V-positive propidium iodide (PI)-negative cells by flow cytometry. Total nitrite concentration was measured in cell cultures supernatant by Griess method.
resultsA comparison of the effect of IFN-γ on EC NO production with untreated cells showed that pretreatment of HUVEC with IFN-γ failed to have a significant effect on NO production by these cells at 10 and 100 U/mL, whereas it led to a significant decreased NO production at 1000 U/mL (P < 0.05). The cells stimulated with IFN-γ showed significantly higher apoptotic cells (PI negative and annexin V-positive cells) after 24 h, compared with cells with no stimulations (P < 0.05).
conclusionIFN-γ has detrimental effects on ECs in high doses. This might be due to inducible NO synthase activation.
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