Evidence map›Paper›PMID 25267682›Full record

ArticleAntimicrobial agents and chemotherapy2014

Spectrum of activity and mechanisms of resistance of various nucleoside derivatives against gammaherpesviruses.

Natacha Coen, Sophie Duraffour, Dimitri Topalis, Robert Snoeck, Graciela Andrei

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.7field-weighted citation impact, top 28% 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

16 citing papers in PubMed, 30 citations in OpenAlex.

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  10. Novel Therapeutics for Epstein⁻Barr Virus.Molecules (Basel, Switzerland) · 2019
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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

5 authors at 2 institutions in 1 country.

Natacha CoenRega Institute for Medical Research, KU Leuven, Leuven, Belgium.
Sophie DuraffourRega Institute for Medical Research, KU Leuven, Leuven, Belgium.
Dimitri TopalisRega Institute for Medical Research, KU Leuven, Leuven, Belgium.
Robert SnoeckRega Institute for Medical Research, KU Leuven, Leuven, Belgium.
Graciela AndreiRega Institute for Medical Research, KU Leuven, Leuven, Belgium graciela.andrei@rega.kuleuven.be.
KU Leuven · BERega Institute for Medical Research · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The susceptibilities of gammaherpesviruses, including Epstein-Barr virus (EBV), Kaposi's sarcoma-associated herpesvirus (KSHV), and animal rhadinoviruses, to various nucleoside analogs was investigated in this work. Besides examining the antiviral activities and modes of action of antivirals currently marketed for the treatment of alpha- and/or betaherpesvirus infections (including acyclovir, ganciclovir, penciclovir, foscarnet, and brivudin), we also investigated the structure-activity relationship of various 5-substituted uridine and cytidine molecules. The antiviral efficacy of nucleoside derivatives bearing substitutions at the 5 position was decreased if the bromovinyl was replaced by chlorovinyl. 1-β-D-Arabinofuranosyl-(E)-5-(2-bromovinyl)uracil (BVaraU), a nucleoside with an arabinose configuration of the sugar ring, exhibited no inhibitory effect against rhadinoviruses but was active against EBV. On the other hand, the fluoroarabinose cytidine analog 2'-fluoro-5-iodo-aracytosine (FIAC) showed high selectivity indices against gammaherpesviruses that were comparable to those of brivudin. Additionally, we selected brivudin- and acyclovir-resistant rhadinoviruses in vitro and characterized them by phenotypic and genotypic (i.e., sequencing of the viral thymidine kinase, protein kinase, and DNA polymerase) analysis. Here, we reveal key amino acids in these enzymes that play an important role in substrate recognition. Our data on drug susceptibility profiles of the different animal gammaherpesvirus mutants highlighted cross-resistance patterns and indicated that pyrimidine nucleoside derivatives are phosphorylated by the viral thymidine kinase and purine nucleosides are preferentially activated by the gammaherpesvirus protein kinase.

Indexed as

AcyclovirAmino Acid SequenceAnimalsAntiviral AgentsArabinofuranosyluracilBromodeoxyuridineCytarabineDNA-Directed DNA PolymeraseDrug Resistance, ViralFoscarnetGanciclovirGuanineHerpesvirus 4, HumanHerpesvirus 8, HumanHumansMolecular Sequence DataAcyclovirAntiviral AgentsArabinofuranosyluracilbrivudineBromodeoxyuridineCytarabineDNA-Directed DNA PolymerasefiacitabineFoscarnetGanciclovirGuaninepenciclovirProtein KinasessorivudineThymidine KinaseViral Proteins

Identifiers

PMID25267682
PMCPMC4249563
OpenAlexW2071182564

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.