Evidence map›Paper›PMID 21307190›Full record

ArticleJournal of virology2011

Hydrolyzable tannins (chebulagic acid and punicalagin) target viral glycoprotein-glycosaminoglycan interactions to inhibit herpes simplex virus 1 entry and cell-to-cell spread.

Liang-Tzung Lin, Ting-Ying Chen, Chueh-Yao Chung, Ryan S Noyce, T Bruce Grindley, Craig McCormick, Ta-Chen Lin, Guey-Horng Wang, Chun-Ching Lin, Christopher D Richardson

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
26.2field-weighted citation impact, top 1% 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

83 citing papers in PubMed, 180 citations in OpenAlex.

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23 more citing papers are in PubMed but not listed here.

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

10 authors at 4 institutions in 3 countries.

Liang-Tzung LinDepartment of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada.
Ting-Ying Chen
Chueh-Yao Chung
Ryan S Noyce
T Bruce Grindley
Craig McCormick
Ta-Chen Lin
Guey-Horng Wang
Chun-Ching Lin
Christopher D Richardson
Dalhousie University · CAKaohsiung Medical University · TWCentral Taiwan University of Science and Technology · TWChia Nan University of Pharmacy and Science · TW

Funding

Canadian Institutes of Health Research MOP-10638
6 · The paper itself

Abstract

Herpes simplex virus 1 (HSV-1) is a common human pathogen that causes lifelong latent infection of sensory neurons. Non-nucleoside inhibitors that can limit HSV-1 recurrence are particularly useful in treating immunocompromised individuals or cases of emerging acyclovir-resistant strains of herpesvirus. We report that chebulagic acid (CHLA) and punicalagin (PUG), two hydrolyzable tannins isolated from the dried fruits of Terminalia chebula Retz. (Combretaceae), inhibit HSV-1 entry at noncytotoxic doses in A549 human lung cells. Experiments revealed that both tannins targeted and inactivated HSV-1 viral particles and could prevent binding, penetration, and cell-to-cell spread, as well as secondary infection. The antiviral effect from either of the tannins was not associated with induction of type I interferon-mediated responses, nor was pretreatment of the host cell protective against HSV-1. Their inhibitory activities targeted HSV-1 glycoproteins since both natural compounds were able to block polykaryocyte formation mediated by expression of recombinant viral glycoproteins involved in attachment and membrane fusion. Our results indicated that CHLA and PUG blocked interactions between cell surface glycosaminoglycans and HSV-1 glycoproteins. Furthermore, the antiviral activities from the two tannins were significantly diminished in mutant cell lines unable to produce heparan sulfate and chondroitin sulfate and could be rescued upon reconstitution of heparan sulfate biosynthesis. We suggest that the hydrolyzable tannins CHLA and PUG may be useful as competitors for glycosaminoglycans in the management of HSV-1 infections and that they may help reduce the risk for development of viral drug resistance during therapy with nucleoside analogues.

Indexed as

AnimalsAntiviral AgentsBenzopyransCell LineChlorocebus aethiopsGlucosidesGlycoproteinsGlycosaminoglycansHerpesvirus 1, HumanHumansHydrolyzable TanninsMicrobial Sensitivity TestsTerminaliaViral Plaque AssayViral ProteinsVirus InactivationAntiviral AgentsBenzopyranschebulagic acidGlucosidesGlycoproteinsGlycosaminoglycansHydrolyzable TanninspunicalaginViral Proteins

Identifiers

PMID21307190
PMCPMC3126266
OpenAlexW1983817234

What OpenQuestion holds

Textmetadata
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.