Background: Apoptosis plays a major role in depleting CD4(+) lymphocytes during infection with HIV-1. Few data exist on its role during HIV infection of children. Sensitivity of peripheral blood lymphocytes (PBLs) to apoptotic stimuli and the importance of the patient's age remain unclear.
Objectives: We sought to analyze the following: (1) markers of cell death-activation (CD95, CD45 isoforms, and CD28) in PBLs from vertically HIV-infected children of different ages before highly active antiretroviral therapy; (2) changes in other PBL populations; (3) PBL sensitivity to cell death and mitochondrial damages; and (4) role of age during progression of infection.
Methods: Cell culture techniques and flow cytometry were used to analyze surface antigens, PBL susceptibility to apoptosis, or PBL susceptibility to change of mitochondrial membrane potential.
Results: Donor age had a strong negative correlation with numbers of CD4(+) and CD8(+) T cells. Virgin T lymphocyte (CD45RA(+), CD95(-)) levels and those of CD95(+) cells showed no correlation with the children's clinical status but did show a correlation with patient age. CD28(-) T lymphocytes were markedly augmented in HIV-infected children but were unrelated to stage of infection or age. A relevant decrease in B lymphocytes and an increase in natural killer cells were also found. Finally, PBLs from HIV-positive children had a marked tendency to undergo apoptosis and mitochondrial damage.
Conclusion: Changes in PBL phenotype, increased expression of CD95, and high sensitivity to apoptosis suggest that a precocious aging of the immune system occurs in HIV-infected children.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1067/mai.2001.117791 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Malignancies in people living with HIV: A 25-years observational study from a tertiary hospital in Italy.
J Infect Public Health
January 2025
Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties "G D'Alessandro," University of Palermo, Palermo, Italy; Infectious and Tropical Disease Unit and Sicilian Regional Reference Center for the fight against AIDS, AOU Policlinico "P. Giaccone", Palermo, Italy. Electronic address:
Background: HIV infection has been associated with an increased risk of cancer development and Kaposi's sarcoma, non-Hodgkin's lymphoma, and invasive cervical cancers have been a manifestation of AIDS. With the advent of antiretroviral therapy, a collateral appearance of non-AIDS defining cancers (NADC) has been observed in HIV positive patients.
Methods: From January 1997 to December 2022, we performed an observational cross-sectional study, involving HIV-infected outpatients with both AIDS-defining cancers (ADC) and NADC, followed up in a tertiary hospital in Italy.
The prognosis for delayed immune recovery in HIV-infected children might be associated with pre-cART CD4 T cell count irrespective of co-infection with tuberculosis.
BMC Res Notes
January 2025
Ragon Institute of MGH, MIT, and Harvard, 600 Main Street, Cambridge, MA, 02139, USA.
Background: Immune reconstitution following the initiation of combination antiretroviral therapy (cART) significantly impacts the prognosis of individuals infected with human immunodeficiency virus (HIV). Our previous studies have indicated that the baseline CD4 T cells count and percentage before cART initiation are predictors of immune recovery in TB-negative children infected with HIV, with TB co-infection potentially causing a delay in immune recovery. However, it remains unclear whether these predictors consistently impact immune reconstitution during long-term intensive cART treatment in TB-negative/positive children infected with HIV.
View Article and Find Full Text PDFOcular and Adnexal Diseases in Human Immunodeficiency Virus-Infected Pregnant Women Attending HIV Clinics in Ibadan, Nigeria.
J West Afr Coll Surg
October 2024
Adeoyo Maternity Teaching Hospital, Ibadan, Nigeria.
Background: Human immunodeficiency virus (HIV) is a lentivirus. It is transmitted through sexual intercourse, shared intravenous drugs, contaminated needle use, blood transfusion, and mother-to-child transmission. Of the patients with HIV, 50%-75% have ocular manifestations and this may be the primary presentation.
View Article and Find Full Text PDFOnset and predictors of first-line antiretroviral therapy treatment failure among children in Ethiopia: a systematic review and meta-analysis.
BMC Pediatr
December 2024
Department of Midwifery, College of Health Sciences, Debre Markos University, Debre Markos, Ethiopia.
Introduction: The emergence of First-line Antiretroviral Therapy (ART) regimens fails; it necessitates the use of more costly and less tolerable second-line medications. Therefore, it is crucial to identify and address factors that increase the likelihood of first-line ART regimen failure in children. Although numerous primary studies have examined the incidence of first-line ART failure among HIV-infected children in Ethiopia, national-level data on the onset and predictors remain inconsistent.
View Article and Find Full Text PDFDevelopmental delay and associated factors among HIV-infected under-five children in public health facilities, Southern Ethiopia.
Sci Rep
December 2024
School of Health and Medical Science, Centre for Health Research, University of Southern Queensland, Toowoomba, Australia.
Delays in development that occur during early childhood can have long-lasting consequences, potentially leading to poor academic achievement. Research has shown that the human immunodeficiency virus can have neurotropic effects, which may impact the development of the brain in infected children. However, there is a scarcity of evidence regarding developmental delays among children with human immunodeficiency virus in the study area.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!