ArticleGastroenterology research2019
The Influence of Hepatitis C Viral Loads on Natural Killer Cell Function.
Article in Gastroenterology research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Liver reprogramming toward hepatocellular carcinoma following hepatitis C sustained virologic response: a narrative review.Translational gastroenterology and hepatology · 2026Review
- Markers of Natural Killer Cell Exhaustion in HIV/HCV Coinfection and Their Dynamics After HCV Clearance Mediated by Direct-Acting Antivirals.Open forum infectious diseases · 2023Article
- Natural killer cells and their exosomes in viral infections and related therapeutic approaches: where are we?Cell communication and signaling : CCS · 2023Review
- Natural killer cells in liver transplantation: Can we harness the power of the immune checkpoint to promote tolerance?Clinical and translational science · 2022Review
- The Evolutionary Arms Race between Virus and NK Cells: Diversity Enables Population-Level Virus Control.Viruses · 2019Review
- Liver cirrhosis in HIV/HCV-coinfected individuals is related to NK cell dysfunction and exhaustion, but not to an impaired NK cell modulation by CD4Journal of the International AIDS Society · 2019Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHepatitis C virus (HCV) infection has a high rate of chronicity, attributable to its capacity to alter host immunity, including natural killer (NK) cell function. In this study, the interaction between NK cell activity and HCV viral load was investigated.
methodsPeripheral blood NK cells were examined for cytotoxicity and interferon (IFN)-γ expression in HCV infected low (LVL, < 800,000 IU/mL, n = 10) and high (HVL, > 800,000 IU/mL, n = 13) viral load patient cohorts.
resultsSpontaneous NK cell cytotoxicity was more robust in the LVL cohort resulting in a negative correlation with viral loads (spontaneous, r = -0.437, P = 0.037; IFN-α activated, r = -0.372, P = 0.081). Although the percent of IFN-γ+ NK cells did not associate with viral load, within the LVL cohort there was a marked increase in IFN-γ+ NK cells upon IFN-α activation relative to medium alone (P < 0.01). To examine the inability of NK cells derived from HVL patients to be further activated, the expression of the exhaustion marker programmed cell death protein (PD)-1 was evaluated. PD-1 expression upon NK cell activation correlated with viral load (r = 0.649, P = 0.009). In addition, HCV proteins upregulated PD-1 expression
conclusionsHigh HCV loads appear to promote NK exhaustion in chronic HCV infection.
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