Lymphocyte homeostasis is maintained in perinatally HIV-infected patients after three decades of life.
Immunosenescence
Perinatal HIV infection
T-cell receptor repertoire
Telomere length
Thymic and bone marrow output
Journal
Immunity & ageing : I & A
ISSN: 1742-4933
Titre abrégé: Immun Ageing
Pays: England
ID NLM: 101235427
Informations de publication
Date de publication:
2019
2019
Historique:
received:
12
06
2019
accepted:
25
09
2019
entrez:
23
10
2019
pubmed:
23
10
2019
medline:
23
10
2019
Statut:
epublish
Résumé
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. 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. 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. 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.
Sections du résumé
BACKGROUND
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
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
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
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.
Identifiants
pubmed: 31636688
doi: 10.1186/s12979-019-0166-7
pii: 166
pmc: PMC6791008
doi:
Types de publication
Journal Article
Langues
eng
Pagination
26Informations de copyright
© The Author(s). 2019.
Déclaration de conflit d'intérêts
Competing interestsThe authors declare that they have no competing interests.
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