Publications by authors named "Alinda Vos"

Background: ADVANCE compared 3 World Health Organization-recommended first-line regimens in participants with HIV who were antiretroviral naive.

Methods: This randomized, open-label, noninferiority trial enrolled participants living with HIV with no antiretroviral exposure in the previous 6 months to 1 of the following arms: tenofovir alafenamide (TAF) / emtricitabine (FTC) + dolutegravir (DTG) (2 tablets), tenofovir disoproxil fumarate (TDF) / FTC + DTG (2 tablets), or a fixed-dose combination of TDF / FTC / efavirenz (EFV) (1 tablet). We report the final safety and efficacy data up to 192 weeks.

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  • The study aimed to determine how common impaired glucose tolerance (IGT) and undiagnosed diabetes mellitus (DM) are among people living with HIV (PLWH) and identify risk factors for undiagnosed DM.
  • Conducted at Ndlovu Medical Center in South Africa, the research included 356 HIV-positive individuals, collecting data on demographics, symptoms, and risk factors, while diagnosing IGT and DM using glucose tests.
  • Results showed 48.3% had IGT, with 8.1% having DM (over half newly diagnosed); significant associations for undiagnosed DM included being 45 or older and low physical activity, highlighting the need for regular diabetes screening in this population.
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Cardiovascular disease (CVD) is the leading cause of death globally. The occupational challenges of bus drivers may increase their risk of CVD, including developing obesity, hypertension, and diabetes. We evaluated the medical records of 266 bus drivers visiting an occupational medical practice between 2007 and 2017 in Johannesburg, South Africa, to determine the health status of bus drivers and investigate risk factors for CVD, and their impact on the ability to work.

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  • The study evaluates the effectiveness of various cardiovascular disease (CVD) risk prediction models, including D:A:D, in assessing CVD risk among people living with HIV in sub-Saharan Africa, specifically in Limpopo, South Africa.
  • A total of 735 HIV-infected individuals were analyzed, revealing low predicted CVD risk across the models, with D:A:D 2010 and FHS-CVD showing similar classifications for risk levels.
  • The study concludes that while the overall CVD risk is low for this population, the D:A:D model identifies more individuals at high risk compared to other assessment tools.
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Background: Hyperglycaemia is a risk factor for tuberculosis. Evidence of changes in blood glucose levels during and after tuberculosis treatment is unclear.

Objective: To compile evidence of changes in blood glucose during and after tuberculosis treatment and the effects of elevated blood glucose changes on treatment outcomes in previously normoglycaemic patients.

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Introduction: Previous studies indicate people with diabetes mellitus (DM) may have varying treatment outcomes when receiving treatment for tuberculosis (TB) and that TB infection or its treatment may predispose them to develop an abnormal blood glucose or type 2 DM. This has implications for Eswatini which is a high TB burden country and with increasing cases of non-communicable diseases including DM. This study will describe the epidemiology of DM-TB comorbidity in a prospective cohort of patients receiving TB treatment and identify best practices for integration of care for non-communicable diseases into TB services in Eswatini.

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  • Cardiovascular disease (CVD) is a significant global issue, especially for long-distance truck drivers in South Africa, who face increased risks due to their sedentary lifestyle and night shift work.
  • A study involving 607 male truck drivers found high rates of CVD risk factors like hypertension, obesity, and abnormal lipid levels, regardless of whether they worked day shifts or a combination of day and night shifts.
  • The research concluded that while both groups exhibited considerable CVD risk, no significant differences in overall CVD risk measures were noted between those working only day shifts and those working both shifts.
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Background: Prevalence of HIV, smoking, and pulmonary infections in South Africa are high.

Objectives: We investigated the role of smoking and HIV status on lung function.

Methods: This is a secondary analysis of a cross-sectional study conducted in South Africa.

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Background: With the roll-out of antiretroviral treatment (ART), the life expectancy of people with HIV and, hence, morbidity from non-communicable diseases, including pulmonary diseases, have increased.

Objectives: This research study aims to investigate whether HIV infection and ART use are associated with pulmonary function, given the high frequency of pulmonary infections, including tuberculosis (TB), associated with HIV.

Method: Adults living with HIV (ART-naïve, on first- or second-line ART), and age and sex matched HIV-negative controls were included in a cross-sectional study in Johannesburg, South Africa.

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Purpose Of Review: HIV treatment has evolved since the introduction of antiretroviral therapy (ART) in the 1990s. Earlier treatment strategies, and the introduction of integrase inhibitors in preferred first-line ART have fundamentally changed cardiovascular side effects due to HIV infection and ART. This review provides an update on cardiovascular toxicity of contemporary ART.

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Background: Studies have associated HIV with an increased risk of obstructive lung disease (OLD).

Objectives: We aimed to identify the predictive factors for impaired lung function in an urban, African, HIV-positive population.

Method: A cross-sectional study was performed in Johannesburg, South Africa, from July 2016 to November 2017.

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  • * A study tested the PSQI and Epworth Sleepiness Scale (ESS) among 302 truckers in South Africa, finding PSQI's internal consistency (0.42) below the accepted level, especially for night shift workers (0.46).
  • * The research highlights a need for caution when using the PSQI for this group and suggests creating sleep questionnaires specifically tailored for shift workers.
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Introduction: Insight into inflammation patterns is needed to understand the pathophysiology of HIV and related cardiovascular disease (CVD). We assessed patterns of inflammation related to HIV infection and CVD risk assessed with carotid intima media thickness (CIMT).

Methods: A cross-sectional study was performed in Johannesburg, South Africa, including participants with HIV who were virally suppressed on anti-retroviral therapy (ART) as well as HIV-negative participants who were family members or friends to the HIV-positive participants.

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  • Long-haul truck drivers (TDs) face a high risk of cardiovascular disease (CVD) due to poor lifestyle factors, including sleep disorders like obstructive sleep apnoea (OSA), which have not been thoroughly studied.
  • A study involving 575 truck drivers in South Africa examined the links between sleep quality, chronic inflammation, and CVD risk factors, revealing that many drivers had issues like elevated blood pressure and obesity.
  • Findings indicate that OSA, shortened sleep, and working night shifts contribute to higher CVD risk, particularly for drivers living with HIV, highlighting the need for better health management and sleep education for this group.
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Background: Studies from high income countries report that HIV-positive people have an impaired systolic and diastolic cardiac function compared to HIV-negative people. It is unclear if results can be translated directly to the Sub-Saharan Africa context. This study assesses electro- and echocardiographic characteristics in an urban African population, comparing HIV-positive people (treated and not yet treated) with HIV-negative controls.

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Infective endocarditis (IE) causes substantial morbidity and mortality if untreated. The clinical course of IE might be different in HIV-positive patients as a result of immune dysfunction. This systematic review investigates the clinical course of IE in HIV-positive compared to HIV-negative patients.

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  • In South Africa, a study found that 10% of long-distance truck drivers experience chronic pain, with a focus on factors like mental health, physical activity, and sleep quality.
  • The study involved 614 male truck drivers, measuring their chronic pain, depressive symptoms, PTSD, and physical activity levels.
  • Results indicated that working more than two nights a week increased the risk of chronic pain, while higher physical activity levels were linked to better pain management, sleep quality, and lower depression levels.
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Background: ADVANCE compared the efficacy and safety of two antiretroviral first-line combinations (dolutegravir combined with emtricitabine and either tenofovir disoproxil fumarate or tenofovir alafenamide), with a third regimen (efavirenz combined with emtricitabine and tenofovir disoproxil fumarate) previously recommended by WHO. Here, we report the 96-week data for the study.

Methods: This randomised, open-label, non-inferiority phase 3 trial, was done at two research sites in Johannesburg, South Africa, after participant recruitment from 11 public health clinics also in Johannesburg.

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Background: Long-term retention of research participants in studies is challenging. In research in sub-Saharan Africa, phone calls are the most frequently used method to distantly engage with participants.

Objective: We aimed to get insight into the effectiveness of phone calls to retain contact with participants and evaluated determinants of reachability.

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Background: Antiretroviral therapy (ART) transformed human immunodeficiency virus (HIV) infection into a chronic disease. Possible HIV-associated complications have emerged including cardiovascular diseases (CVD).

Objectives: This study aims to determine the heart rate variability (HRV) distribution and association between HRV and HIV treated with ART in a rural African population.

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Background HIV is associated with an increased risk of cardiovascular disease (CVD) in high-income countries. Little is known about the CVD burden in sub-Saharan Africa, where 70% of the world's HIV-positive population lives. This study aims to provide insight into the burden of CVD risk in a rural setting in sub-Saharan Africa considering HIV infection and antiretroviral therapy (ART).

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Background: Life expectancy is increasing in the HIV-positive population and age-related non-communicable diseases, such as cardiovascular disease, (CVD) are seen more frequently. This study investigated to what extent HIV and antiretroviral therapy (ART) is associated with CVD risk in an urban African population.

Methods: A cross-sectional study was performed in Johannesburg, South Africa, between July 2016 and November 2017.

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People with HIV (PWH) have an increased prevalence of cardiovascular disease (CVD) compared to uninfected patients. Lipoprotein-associated phospholipase A (Lp-PLA) catalyzes the synthesis of pro-inflammatory lipids that recruit monocytes. Current guidelines for assessing cardiovascular risk in HIV-infected patients suggest that Lp-PLA may be a useful surrogate marker for CVD health in this patient population.

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