Evidence map›Paper›PMID 21947401›Full record

ArticleAntimicrobial agents and chemotherapy2011

Digallate dimers of (-)-epigallocatechin gallate inactivate herpes simplex virus.

Charles E Isaacs, Weimin Xu, George Merz, Sharon Hillier, Lisa Rohan, Guang Y Wen

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

28 citing papers in PubMed, 75 citations in OpenAlex.

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  14. Antiviral Mechanism of Action of Epigallocatechin-3-Molecules (Basel, Switzerland) · 2018
    Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Review
  20. A Review of the Antiviral Role of Green Tea Catechins.Molecules (Basel, Switzerland) · 2017
    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

6 authors at 3 institutions in 1 country.

Charles E IsaacsInstitute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, New York 10314, USA. chisi@rcn.com
Weimin Xu
George Merz
Sharon Hillier
Lisa Rohan
Guang Y Wen
New York State Office for People With Developmental Disabilities · USMagee-Womens Hospital · USUniversity of Pittsburgh · US

Funding

NIAID NIH HHS AI 51611-05
6 · The paper itself

Abstract

Topical microbicides are potentially an alternative method to vaccines for reducing the spread of herpes simplex virus (HSV). We have previously shown (S. Liu et al., Biochim. Biophys. Acta 1723:270-281, 2005) that the catechin (-)-epigallocatechin gallate (EGCG) inactivates HSV at neutral pH; however, to function in the female genital tract EGCG must also be effective at acidic pH. EGCG inactivated HSV-1 and HSV-2 at pH 8.0 by 3 log(10) to 4 log(10) but was ineffective at pH 5.7. The EGCG digallate dimers theasinensin A, P2, and theaflavin-3,3'-digallate (TF-3) inactivated both viruses by 3 log(10) to 4 log(10) at pH 5.7 and as much as 5 log(10) at pH 8.0. TF-3 inactivated HSV-1 and HSV-2 by 4 to 5 log(10) in the pH range of 4.0 to 5.7. Dimers with one gallate moiety had antiviral activity intermediate between the activities of EGCG and digallate dimers. Confocal and electron microscopy showed that theasinensin A did not damage Vero cells. All EGCG dimers inactivated enveloped viruses with class I, class II, and class III (HSV-1, HSV-2) fusion proteins more effectively than did monomeric EGCG. EGCG had no activity against the nonenveloped viruses tested, but TF-3 reduced the titer of 4 of 5 nonenveloped viruses by ≅2 to 3.5 log(10). Results also showed that HSV-1 glycoprotein B (gB) was aggregated more rapidly by theasinensin A than EGCG, which, when taken together with the nonenveloped virus data, suggests that dimers may inhibit the function of viral proteins required for infectivity. Digallate dimers of EGCG appear to have excellent potential as microbicidal agents against HSV at acidic and neutral pHs.

Indexed as

AnimalsAntiviral AgentsBenzopyransCatechinChlorocebus aethiopsDepsidesDimerizationGallic AcidHerpes SimplexHerpesvirus 1, HumanHerpesvirus 2, HumanHumansHydrogen-Ion ConcentrationMicroscopy, ElectronPhenolsVero CellsAntiviral AgentsBenzopyransCatechinDepsidesdigallic acidepigallocatechin gallateGallic AcidPhenolstheasinensin A

Identifiers

PMID21947401
PMCPMC3232753
OpenAlexW2144546798

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.