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Published in: Immunity & Ageing 1/2019

Open Access 01-12-2019 | Human Immunodeficiency Virus | Research

Lymphocyte homeostasis is maintained in perinatally HIV-infected patients after three decades of life

Authors: S. Paghera, E. Quiros-Roldan, A. Sottini, M. Properzi, F. Castelli, L. Imberti

Published in: Immunity & Ageing | Issue 1/2019

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Abstract

Background

While immunosenescence, defined as reduced production of new lymphocytes, restriction of T-cell receptor repertoire and telomeres shortening, has been extensively evaluated in HIV-infected children and adults, no data about these parameters are available in perinatally-infected patients with very long-lasting HIV infection.

Methods

We compared thymic and bone marrow output, telomere length (measured by Real-Time PCR) and T-cell receptor repertoire (determined by spectratyping) of 21 perinatally HIV-infected subjects (with a median of 27 years of infection) with those of 19 age-matched non-perinatally HIV-infected patients and 40 healthy controls. All patients received a combined antiretroviral therapy.

Results

While thymic and bone marrow output were not different among the analyzed groups, telomere length in peripheral blood cells and T-cell receptor diversity were significantly lower in HIV-perinatally and non-perinatally infected individuals compared to healthy controls.

Conclusions

In HIV-infected subjects, a normal thymic output together with a reduced telomere length and a restricted T-cell receptor repertoire could be explained by the shift of newly produced cells into memory subsets. This phenomenon may allow to control viral infection and maintain peripheral homeostasis.
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Metadata
Title
Lymphocyte homeostasis is maintained in perinatally HIV-infected patients after three decades of life
Authors
S. Paghera
E. Quiros-Roldan
A. Sottini
M. Properzi
F. Castelli
L. Imberti
Publication date
01-12-2019
Publisher
BioMed Central
Published in
Immunity & Ageing / Issue 1/2019
Electronic ISSN: 1742-4933
DOI
https://doi.org/10.1186/s12979-019-0166-7

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