Publications by authors named "Arpadi S"

Article Synopsis
  • The study aimed to examine how early antiretroviral therapy (ART) affects the growth of infants diagnosed with HIV during their first year.
  • Researchers followed 116 HIV-infected infants and 80 uninfected infants born to mothers with HIV in Johannesburg, analyzing their growth through 48 weeks.
  • Results showed that HIV-infected infants had significantly lower weight and length compared to the uninfected group, particularly highlighted in girls, and higher viral loads before treatment were linked to poorer growth outcomes.
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  • Infancy is a critical period for the development of the microbiome, and this study investigates how early antiretroviral therapy (ART) affects oral microbiota in children with HIV compared to uninfected controls.
  • Children with HIV showed reduced microbial diversity and different bacterial abundances, particularly in boys, but earlier ART initiation did not significantly improve their microbiota profile.
  • The findings highlight that the ART regimen currently used may have a more pronounced impact on oral microbiota than the age at which therapy began.
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Objective: Lesotho does not have reliable data on HIV prevalence in children, relying on estimates generated from program data. The 2016 Lesotho Population-based HIV Impact Assessment (LePHIA) aimed to determine HIV prevalence among children 0-14 years to assess the effectiveness of the prevention of mother-to-child transmission (PMTCT) program and guide future policy.

Methods: A nationally representative sample of children under 15 years underwent household-based, two-stage HIV testing from November 2016-May 2017.

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  • The study examines tuberculosis (TB) incidence among children living with HIV in South Africa to identify prevention strategies.
  • Among 397 eligible children, 28.7% had existing TB, with risk factors including low CD4+ counts, malnutrition, and higher socioeconomic status.
  • The research found that early initiation of antiretroviral treatment (ART), cotrimoxazole use, and improving nutritional status could significantly help reduce TB risk in these children.
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  • * Quantitative ultrasound (QUS) is a portable, affordable, and radiation-free alternative for bone assessment that has shown potential in detecting bone quality issues in CLHIV, though its correlation with DXA has not been thoroughly studied.
  • * The study measured both DXA and QUS metrics in CLHIV over 12 months and found that while calcaneal QUS showed strong correlations with DXA initially, these correlations did not hold over time,
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Background: There is growing concern about the long-term [a condition which is the consequence of a previous disease or injury] of perinatally acquired human immunodeficiency virus (HIV). Children living with HIV (CLHIV) present with cardiopulmonary impairments and decreased physical activity which may be due to poor endurance.

Objectives: Our study aimed to investigate the sub-maximal endurance of CLHIV compared to a non-infected comparison group.

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Disclosure to children living with HIV (CLHIV) about their own status is associated with positive outcomes such as treatment adherence, but prior cross-sectional studies in sub-Saharan Africa report disclosure rates of <50%. This study aims to assess pediatric disclosure over time. 548 CLHIV were followed from 2/2013-4/2018 in Johannesburg, South Africa.

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  • A study in Haiti evaluated the effectiveness of point-of-care (POC) HIV viral load testing compared to standard testing to see if quicker results could enhance adherence to antiretroviral therapy (ART).
  • Results showed that participants receiving POC testing were significantly more likely to get their results quickly (94.7% within 6 weeks) than those receiving standard testing (80.1%).
  • Additionally, those who received POC testing displayed better reporting of their ART adherence and were identified with higher viral loads, allowing for faster clinician interventions.
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Background: Tenofovir disoproxil fumarate (TDF) is included in first-line antiretroviral treatment (ART) for adolescents living with HIV (ALWH). Associated toxicities remain a concern.

Objective: We evaluated bone and renal safety outcomes in virologically suppressed South African ALWH after switching to TDF.

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Background: Early-life metabolic derangements in HIV-exposed uninfected (HEU) infants have been reported.

Methods: Pregnant women with HIV and HIV-uninfected pregnant women were enrolled with their newborns in a US cohort from 2011 to 2015. We measured cord insulin, C-peptide, and metabolic cytokines of HEU and HIV-unexposed uninfected (HUU) newborns using ELISA and metabolites, lipid subspecies, and eicosanoids via liquid chromatography/mass spectrometry.

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Article Synopsis
  • Poor growth and metabolic issues are significant concerns for children living with HIV (CLHIV), especially regarding their growth and lipid levels when starting antiretroviral therapy (ART).
  • In a study of 241 CLHIV in South Africa, high viral load (VL) at ART initiation was linked to lower growth scores (length and weight) and lipid levels, particularly in those under 3 years old.
  • The findings highlight the importance of early diagnosis and prompt treatment to improve growth and metabolic health, with further research needed on the long-term effects of high VL on cardiovascular health.
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Background: Accelerated epigenetic aging using DNA methylation (DNAm)-based biomarkers has been reported in people with human immunodeficiency virus (HIV, PWH), but limited data are available among African Americans (AA), women, and older PWH.

Methods: DNAm was measured using Illumina EPIC Arrays for 107 (69 PWH and 38 HIV-seronegative controls) AA adults ≥60 years in New York City. Six DNAm-based biomarkers of aging were estimated: (1) epigenetic age acceleration (EAA), (2) extrinsic epigenetic age acceleration (EEAA), (3) intrinsic epigenetic age acceleration (IEAA), (4) GrimAge, (5) PhenoAge, and (6) DNAm-estimated telomere length (DNAm-TL).

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Objective: We evaluated longitudinal trends and associations between bone mass, bone turnover and inflammatory markers among South African children living with HIV (CLHIV) and controls.

Design: We previously reported decreased bone mass among CLHIV independent of marked inflammation and increased bone turnover. The goal of this study was to evaluate longitudinal changes in bone mass, bone turnover and inflammation over 2 years.

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Article Synopsis
  • Adolescents aged 10-19 years living with HIV represent a significant and unique group requiring tailored healthcare, with a focus on those infected perinatally and behaviorally in Zimbabwe, Malawi, Zambia, Eswatini, and Lesotho.
  • The study found that 60.9% of the adolescents had previously diagnosed HIV, but only 47.1% achieved viral load suppression, indicating treatment challenges; approximately 72.6% were perinatally infected.
  • With a significant number of adolescents unaware of their HIV status and concerns about treatment effectiveness, there is an urgent need to improve HIV diagnosis and optimize treatment strategies for this population.
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Background: Prior studies have measured accelerated aging in people with HIV using a DNA methylation (DNAm)-based biomarker of aging, "epigenetic age," but data are limited in African American (AA) young adults with perinatally acquired HIV infection (PHIV).

Methods: We performed a cross-sectional study of AA young adults aged 20-35 years with PHIV (N = 31) and seronegative controls (N = 30) using DNAm measured in whole blood and cognitive function measured by the NIH Toolbox. Illumina EPIC array was used to measure DNAm age and accelerated aging markers including epigenetic age acceleration (EAA), as well as extrinsic (EEAA) and intrinsic (IEAA) EAA.

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Introduction: Adolescents living with HIV have poor antiretroviral therapy (ART) adherence and viral suppression outcomes. Viral load (VL) monitoring could reinforce adherence but standard VL testing requires strong laboratory capacity often only available in large central laboratories. Thus, coordinated transport of samples and results between the clinic and laboratory is required, presenting opportunities for delayed or misplaced results.

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Objectives: Children with HIV (CHIV) have lifetime exposure to antiretrovirals (ART); therefore, optimizing their regimens to have the least impact on fat redistribution is a priority.

Methods: This is a cross-sectional study of 219 perinatally infected CHIV and 219 HIV-uninfected controls from similar socioeconomic backgrounds in Johannesburg, South Africa. We compared total body and regional fat distribution in CHIV on suppressive ART regimens with controls and, among CHIV, between ritonavir-boosted lopinavir (LPV/r)-based and efavirenz (EFV)-based regimens.

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This study examined behavioral functioning and quality of life in South African children living with perinatally acquired HIV. Compared with controls, children living with perinatally acquired HIV had a higher mean total difficulties score assessed by the Strengths and Difficulties Questionnaire and lower mean quality of life scores assessed by the Pediatric Quality of Life Inventory.

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Perinatal HIV infection is associated with delayed neurocognitive development, but less is known about children perinatally HIV-exposed but uninfected (CHEU). We compared cognitive and language outcomes in 4-6-year old CHEU versus children HIV-unexposed and uninfected (CHUU) and children living with HIV (CLHIV). We enrolled 1,581 children (77% of the child population) in five communities in KwaZulu-Natal, South Africa.

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Introduction: We previously found lower bone mass but similar bone turnover in pre-pubertal children living with HIV (CLWH) on a ritonavir-boosted lopinavir (LPV/r)-based vs. efavirenz-based antiretroviral therapy regimen 2 years after switch. Here, we evaluate if bone turnover differed between the groups close to the time of switch.

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Adolescents and youth living with HIV have poorer antiretroviral treatment (ART) adherence and viral suppression outcomes than all other age groups. Effective interventions promoting adherence are urgently needed. We reviewed and synthesized recent literature on interventions to improve ART adherence among this vulnerable population.

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Background: Reduced bone mineral mass by dual x-ray absorptiometry is reported in children living with HIV (CLWH), but few studies of bone microarchitecture, particularly in sub-Saharan Africa, have been conducted. Here, we compare bone architecture and strength in black South African CLWH and uninfected control children by peripheral quantitative computed tomography (pQCT).

Setting And Methods: One hundred seventy-two CLWH on antiretroviral therapy (ART) and 98 controls in the CHANGES Bone Study in Johannesburg, South Africa received pQCT scans of the radius and tibia.

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Purpose Of Review: In the era of modern bone-friendly antiretroviral therapy (ART) regimens for people living with HIV (PLWH), this review discusses the research gaps and management concerns that remain for individuals who have already been exposed to ART with negative effects on bone metabolism, especially children and adolescents who have not acquired peak bone mass, and older adults who have additional risk factors for fracture.

Recent Findings: Data now support the use of avoidance of TDF and use of bone-friendly regimens that include integrase strand transfer inhibitors in PLWH with increased risk of fracture for either ART initiation or switch. Despite significant advances in our understanding of ART choice for PLWH with regard to bone health, additional diagnostic tests to determine fracture risk and management strategies beyond ART choice are necessary, especially in vulnerable PLWH populations, such as children and adolescents and older adults.

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: We report data from an observational cohort of South African children living with HIV less than 12 years of age eligible for fast track antiretroviral therapy (rapid) initiation. We found that less than half of children eligible for rapid antiretroviral therapy initiation based on immunologic and disease status started treatment within 1 week.

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