Innate and adaptive abnormalities in youth with vertically acquired HIV through a multicentre cohort in Spain
| Autor: | Angielys Zamora, María Luisa Navarro, Cristina Epalza, Talía Sainz, José Antonio Iribarren, María Ángeles Muñoz-Fernández, Miren Apilanez, Laura Tarancon-Diez, Santiago Jiménez de Ory, Jose I Bernardino, Itzíar Carrasco, Sara Guillén, Cristina Diez, Elena Vazquez-Alejo, José Tomás Ramos |
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| Rok vydání: | 2021 |
| Předmět: |
Senescence
Adult CD4-Positive T-Lymphocytes antiretroviral treatment (ART) Adolescent Receptor expression HIV Infections CD8-Positive T-Lymphocytes Lymphocyte Activation Young Adult Immune system TIGIT exhaustion Medicine Humans Interleukin-7 receptor Research Articles immunosenescence business.industry Public Health Environmental and Occupational Health HIV Immunosenescence NKG2D Infectious Diseases Anti-Retroviral Agents Spain Immunology Leukocytes Mononuclear activation vertical transmission business CD8 Research Article |
| Zdroj: | Journal of the International AIDS Society |
| ISSN: | 1758-2652 |
| Popis: | Introduction Immune abnormalities have been described among youth with vertically acquired HIV (YWVH) despite antiretroviral treatment (ART). The CD4/CD8 ratio could be a useful prognostic marker. We assess immune activation and senescence in a cohort of YWVH in comparison to youth without vertically acquired HIV. Methods YWVH under suppressive ART were included and compared to a group of HIV‐negative donors (HD) matched by age and sex, from September 2019 to September 2020. Subset distribution and expression of activation, maturation, senescence and exhaustion markers on T and NK cells were studied on peripheral blood mononuclear cells by multiparametric flow cytometry. Results Thirty‐two YWVH (median age: 24.4 years (interquartile range: 22.5 to 28.3 years)) were included. Among YWVH, CD4‐ and CD8‐T cells showed high levels of activation (HLA‐DR/CD38), IL‐7 receptor expression (CD127) and exhaustion (TIM‐3). Regarding NK cells, YWVH showed increased levels of activation and exhaustion markers compared to HD. Strong inverted correlations were observed between T‐cell activation (HLA‐DR/CD38), senescence (CD57) and exhaustion (TIGIT, PD‐1) levels with the CD4/CD8 ratio among YWVH. HLA‐DR, CD69, NKG2D and NKG2A expression levels on NK cells also correlated with the CD4/CD8 ratio. Age at ART initiation was directly associated with higher frequency of CD16high NK‐cell subsets, exhaustion T‐cell levels (CD57, TIM3) and NK cells activation levels. Conclusions Immunological changes associated with vertically acquired HIV, characterized by increased activation and exhaustion levels in innate and adaptive immune components, are only partially restored by ART. The CD4/CD8 ratio can be a useful marker of disease progression for routine clinical practice. |
| Databáze: | OpenAIRE |
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