Evidence map›Paper›PMID 19473882›Full record

ArticleClinical immunology (Orlando, Fla.)2009

Frequency of gC1qR+CD4+ T cells increases during acute hepatitis C virus infection and remains elevated in patients with chronic infection.

Kara L Cummings, Hugo R Rosen, Young S Hahn

Abstract read
In one paragraph

Article in Clinical immunology (Orlando, Fla.), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.2field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 16 citations in OpenAlex.

  1. Liver Macrophages in the Pathogenesis of Viral Hepatitis.Current issues in molecular biology · 2026
    Review
  2. Fish and shellfish immunology reports · 2022
    Article
  3. In the Crosshairs: RNA Viruses OR Complement?Frontiers in immunology · 2020
    Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Adaptive immunity to the hepatitis C virus.Advances in virus research · 2010
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Kara L CummingsBeirne Carter Center for Immunology Research and Department of Microbiology, University of Virginia, Charlottesville, VA 22908, USA.
Hugo R Rosen
Young S Hahn
Carter Center · USNational Jewish Health · US

Funding

Suppression of HCV-specific CD4+ T Cells by Core ProteinU19AI066328 · NIAID · UNIVERSITY OF COLORADO DENVER · PI ROSEN, HUGO RAMON · 2005 to 2014
$6.8M
UVA Digestive Health Research CenterP30DK067629 · NIDDK · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI PIZARRO, THERESA TORRES · 2004 to 2008
$5.6M
Immune Responses in Acute Hepatitis C InfectionR01DK060590 · NIDDK · UNIVERSITY OF COLORADO DENVER · PI ROSEN, HUGO RAMON · 2002 to 2010
$2.0M
Impaired T cell function by HCV coreR01DK066754 · NIDDK · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI HAHN, YOUNG S. · 2004 to 2008
$1.5M
Alteration of innate immunity by HCV coreR01AI057591 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI HAHN, YOUNG S. · 2005 to 2009
$1.5M
NIAID NIH HHS 5T32AI10749608NIAID NIH HHS R01 AI057591NIAID NIH HHS U19 AI066328NIAID NIH HHS U19AI066328NIDDK NIH HHS P30 DK067629NIDDK NIH HHS R01 DK060590NIDDK NIH HHS R01 DK066754
6 · The paper itself

Abstract

CD4+ T cell responses are impaired in chronic HCV infection. To determine factor(s) involved in CD4+ T cell dysregulation, we examined the effect of extracellular core on the alteration of CD4+ T cell responses and the cell surface level of core-binding protein, gC1qR on CD4+ T cells from acute HCV patients with resolved and chronic infection. During the acute phase of infection, the frequency of gC1qR+CD4+ T cells increased in both resolved and chronic HCV infection compared to healthy controls. Notably, 6 months later, the frequency of gC1qR+CD4+ T cells maintained elevated in chronic patients compared to that in resolved patients. In addition, TCR stimulation increased the frequency of gC1qR+CD4+ T cells, resulting in core-induced inhibition of T cell responses in both resolved and chronic patients. These results suggest that HCV infection expands gC1qR+CD4+ T cells, which increase the susceptibility to core-mediated immune dysregulation and facilitate the establishment of HCV persistency.

Indexed as

Acute DiseaseAdolescentAdultCarrier ProteinsCD4 Lymphocyte CountCD4-Positive T-LymphocytesCell ProliferationCell SurvivalFemaleHepatitis CHepatitis C AntigensHepatitis C, ChronicHumansLeukocytes, MononuclearLymphocyte ActivationMaleC1QBP protein, humanCarrier Proteinscore protein p22, Hepatitis C virusHepatitis C AntigensMitochondrial ProteinsReceptors, Antigen, T-CellViral Core Proteins

Identifiers

PMID19473882
PMCPMC2720442
OpenAlexW2071484645

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.