DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS

Human herpesvirus type 6 (HHV-6) is a lymphotropic virus that is an etiological agent of infectious mononucleosis (IM) in children. HHV-6- mediated infectious mononucleosis (HHV-6M) does not have clearly defined clinical features. Nowadays immunopathogenetic aspects of this disease have not been f...

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Autores principales:	E. N. Filatova, L. A. Solntsev, N. B. Presnyakova, E. A. Kulova, O. V. Utkin
Formato:	article
Lenguaje:	RU
Publicado:	Sankt-Peterburg : NIIÈM imeni Pastera 2018
Materias:	hhv-6 infectious mononucleosis population composition of blood cells immunity flow cytometry gradient boosting Infectious and parasitic diseases RC109-216
Acceso en línea:	https://doaj.org/article/1fa0688f1f04467fb141656fbc85d3e7
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spelling	oai:doaj.org-article:1fa0688f1f04467fb141656fbc85d3e72021-11-22T07:09:49ZDETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS2220-76192313-739810.15789/2220-7619-2018-2-223-229https://doaj.org/article/1fa0688f1f04467fb141656fbc85d3e72018-09-01T00:00:00Zhttps://www.iimmun.ru/iimm/article/view/742https://doaj.org/toc/2220-7619https://doaj.org/toc/2313-7398Human herpesvirus type 6 (HHV-6) is a lymphotropic virus that is an etiological agent of infectious mononucleosis (IM) in children. HHV-6- mediated infectious mononucleosis (HHV-6M) does not have clearly defined clinical features. Nowadays immunopathogenetic aspects of this disease have not been fully understood. The purpose of this work was to study the characteristics of the quantitative composition of populations of immunocompetent cells of peripheral blood in children with HHV-6M. The material for the study was samples of peripheral blood from children with “infectious mononucleosis” diagnosis and from virtually healthy children. Depending on the etiologic cause of the disease, children with IM were divided into three groups: HHV-6M, IM of other etiology and mixed infection (combination of HHV-6 and Epstein–Barr virus and/or Cytomegalovirus). Virtually healthy children formed the fourth group. In blood samples, the absolute content of the following populations of immunocompetent cells was determined by the method of flow cytometry: the total population of T-lymphocytes, T- helpers, cytotoxic T-lymphocytes, double positive T-lymphocytes (CD4+CD8+), NK cells and B-lymphocytes. Discriminant analysis was carried out: based on the obtained data on the population composition of blood cells we constructed a model of a child’s attribution to one of the four groups analyzed in pairs. We used the method of machine learning — the algorithm of gradient boosting over decision trees. It was determined whether it is possible to classify patients on the basis of the studied indicators and which combination of indicators is optimal for classification. As a result of the study it was possible to classify the following pairs of groups: healthy children — children with HHV- 6M, healthy children — children with IM of other etiology, children with HHV-6M — children with IM of other etiology. When solving the problem of classifying children from group with mixed infection and from any other group, it was not possible to find a model of satisfactory quality. In comparison with virtually healthy children, children with HHV-6M were characterized by an increased content of the total population of T-lymphocytes and cytotoxic T-cells, as well as by a reduced content of doub le-positive T-lymphocytes. Compared with children with IM of other etiology, children with HHV-6M were characterized by an increased content of cytotoxic T-lymphocytes, T- helpers, B-lymphocytes and a reduced number of double-positive T cells. Our results indicate that HHV-6-mediated infectious mononucleosis causes changes in the quantitative composition of certain populations of immunocompetent cells of peripheral blood, different from those of other etiology, in children.E. N. FilatovaL. A. SolntsevN. B. PresnyakovaE. A. KulovaO. V. UtkinSankt-Peterburg : NIIÈM imeni Pasteraarticlehhv-6infectious mononucleosispopulation composition of blood cellsimmunityflow cytometrygradient boostingInfectious and parasitic diseasesRC109-216RUInfekciâ i Immunitet, Vol 8, Iss 2, Pp 223-229 (2018)
institution	DOAJ
collection	DOAJ
language	RU
topic	hhv-6 infectious mononucleosis population composition of blood cells immunity flow cytometry gradient boosting Infectious and parasitic diseases RC109-216
spellingShingle	hhv-6 infectious mononucleosis population composition of blood cells immunity flow cytometry gradient boosting Infectious and parasitic diseases RC109-216 E. N. Filatova L. A. Solntsev N. B. Presnyakova E. A. Kulova O. V. Utkin DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS
description	Human herpesvirus type 6 (HHV-6) is a lymphotropic virus that is an etiological agent of infectious mononucleosis (IM) in children. HHV-6- mediated infectious mononucleosis (HHV-6M) does not have clearly defined clinical features. Nowadays immunopathogenetic aspects of this disease have not been fully understood. The purpose of this work was to study the characteristics of the quantitative composition of populations of immunocompetent cells of peripheral blood in children with HHV-6M. The material for the study was samples of peripheral blood from children with “infectious mononucleosis” diagnosis and from virtually healthy children. Depending on the etiologic cause of the disease, children with IM were divided into three groups: HHV-6M, IM of other etiology and mixed infection (combination of HHV-6 and Epstein–Barr virus and/or Cytomegalovirus). Virtually healthy children formed the fourth group. In blood samples, the absolute content of the following populations of immunocompetent cells was determined by the method of flow cytometry: the total population of T-lymphocytes, T- helpers, cytotoxic T-lymphocytes, double positive T-lymphocytes (CD4+CD8+), NK cells and B-lymphocytes. Discriminant analysis was carried out: based on the obtained data on the population composition of blood cells we constructed a model of a child’s attribution to one of the four groups analyzed in pairs. We used the method of machine learning — the algorithm of gradient boosting over decision trees. It was determined whether it is possible to classify patients on the basis of the studied indicators and which combination of indicators is optimal for classification. As a result of the study it was possible to classify the following pairs of groups: healthy children — children with HHV- 6M, healthy children — children with IM of other etiology, children with HHV-6M — children with IM of other etiology. When solving the problem of classifying children from group with mixed infection and from any other group, it was not possible to find a model of satisfactory quality. In comparison with virtually healthy children, children with HHV-6M were characterized by an increased content of the total population of T-lymphocytes and cytotoxic T-cells, as well as by a reduced content of doub le-positive T-lymphocytes. Compared with children with IM of other etiology, children with HHV-6M were characterized by an increased content of cytotoxic T-lymphocytes, T- helpers, B-lymphocytes and a reduced number of double-positive T cells. Our results indicate that HHV-6-mediated infectious mononucleosis causes changes in the quantitative composition of certain populations of immunocompetent cells of peripheral blood, different from those of other etiology, in children.
format	article
author	E. N. Filatova L. A. Solntsev N. B. Presnyakova E. A. Kulova O. V. Utkin
author_facet	E. N. Filatova L. A. Solntsev N. B. Presnyakova E. A. Kulova O. V. Utkin
author_sort	E. N. Filatova
title	DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS
title_short	DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS
title_full	DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS
title_fullStr	DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS
title_full_unstemmed	DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS
title_sort	determination of some immunological features of hhv-6-mediated infectious mononucleosis in children by the method of discriminatory analysis
publisher	Sankt-Peterburg : NIIÈM imeni Pastera
publishDate	2018
url	https://doaj.org/article/1fa0688f1f04467fb141656fbc85d3e7
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DETERMINATION OF SOME IMMUNOLOGICAL FEATURES OF HHV-6-MEDIATED INFECTIOUS MONONUCLEOSIS IN CHILDREN BY THE METHOD OF DISCRIMINATORY ANALYSIS

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