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Herpesvirus in the oral cavity of children with leukaemia and its impact on the oral bacterial community profile.

Abstract：

AIMS:This cross-sectional study investigated the association between eight herpesviruses and the bacterial community profiles from the oral cavity of children with and without leukaemia. METHODS:Sixty participants (aged 3-13), divided into the leukaemia group (LG) and healthy group (HG), were evaluated. Collection of medical data, intraoral examination and collection of clinical specimens were carried out. Single PCR and nested-PCR techniques were used to identify the viral types; denaturing gradient gel electrophoresis (DGGE) and real-time PCR techniques were used to evaluate the profile and abundance of bacterial communities. RESULTS:All the children with leukaemia were positive for at least one type of herpesvirus, compared with healthy participants (33.3%; p<0.000). Human cytomegalovirus (HCMV; 46.7%), human herpesvirus-7 (HHV-7; 20%) and HHV-8 (77.3%) were in higher prevalence in the LG (p ≤ 0.01). Children with leukaemia had positive associations with the presence of HCMV, HHV-7 and HHV-8 in the oral cavity when under chemotherapy (p<0.05). There was a qualitative (means of DGGE bands) and quantitative (means of 16S rRNA gene abundance) difference in relation to the bacterial community between the two groups (p<0.05). CONCLUSIONS:Based on the results, the prevalence of herpesviruses and the qualitative bacterial profiles was higher in children with leukaemia and HCMV, HHV-7 and HHV-8 were related to the use of chemotherapy. Moreover, HHV-6 was correlated with an increased bacterial community profile in patients with leukaemia (p<0.05). More attention should be paid to the oral health of these individuals, mainly those under chemotherapy, in order to prevent infections by opportunistic pathogens.

journal_name

J Clin Pathol

journal_title

Journal of clinical pathology

authors

Bezerra TM,Ferreira DC,Carmo FL,Pinheiro R,Leite DC,Cavalcante FS,Belinho RA,Peixoto RS,Rosado AS,dos Santos KR,Castro GF

doi

10.1136/jclinpath-2014-202668

subject

Has Abstract

pub_date

2015-03-01 00:00:00

pages

222-8

issue

eissn

0021-9746

issn

1472-4146

pii

jclinpath-2014-202668

journal_volume

pub_type

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Herpesvirus in the oral cavity of children with leukaemia and its impact on the oral bacterial community profile.