Interventions for Type 2 Diabetes reduction among older people living with HIV in Harare

BACKGROUND

Interventions for Type 2 Diabetes reduction among older people aged more than 50 years living with HIV (PLWH) are pertinent as they face excess risks amid a growing population of ageing PLWH.

AIM

To describe interventions for Type 2 Diabetes reduction among older people living with HIV in Harare Urban DistrictSetting: The study was conducted in a low socio-economic setting from five primary health care clinics in Harare urban District.

METHODS

A qualitative multi-method approach was applied using an exploratory descriptive design and an integrative review literature. The exploratory descriptive study collected data from two purposively selected samples; (1) older PLWH and (2) nurses. Whittemore and Knafl's framework was used for the integrative literature review with articles from 2013 to 2023 selected. Data source triangulation was applied using Braun and Clark's content analysis framework. Ethical approval was obtained (14056739_CREC_CHS_2022).

RESULTS

23 older PLWH with mean age, 62 years, 9 nurses with an average of 6 years' experience and 12 articles comprised the three data sources.  Key themes that emerged were that, screening should include; assessment from a younger age; assessment of HIV and ART-specific risks; diagnostic testing of Type 2 diabetes tests at ART initiation and routinely. Health education should provide information on adequate physical activity parameters and increased consumption of fruits and vegetables. Metformin may be considered as a pharmacological intervention where lifestyle interventions fail.

CONCLUSION

The proposed interventions suggest measures to reduce Type 2 Diabetes and mitigate excess risks faced by older PLWH.Contribution: Improved screening, health education and pharmacological interventions for older PLWH in primary health care settings enable Type 2 Diabetes reduction.

Physical activity and diet for Type 2 Diabetes reduction among older people living with HIV in Harare

Background

People living with HIV (PLWH) are ageing, and face increased risk for developing Type 2 Diabetes. Physical activity and diet are effective in reducing Type 2 Diabetes risk. However, there is variation in how older PLWH engage in physical activity and healthy eating.

Aim

To describe older PLWHs' engagement in physical activity and diet for Type 2 Diabetes risk reduction in Harare.

Setting

The study was conducted in five polyclinics in Harare urban district from low socio-economic areas.

Methods

A qualitative approach and an exploratory descriptive design was used. Twenty-three participants were selected purposively based on the researchers' judgement of age among PLWH. Data were collected using a semi-structured interview schedule and analysed using Braun and Clark's six steps of thematic content analysis. Ethical approval was obtained, and each participant provided informed consent.

Results

The mean age of participants was 62 years. Participants performed varied physical activities through; economic activities, walking, exercise, and domestic chores. Diet included indigenous, unrefined grains, vegetables and fruit, influenced by rural background. Diet consisted of larger proportions of carbohydrates with lesser varying portions of protein and vegetables and fruit. Healthy eating among participants was facilitated by the proximity of markets and family.

Conclusion

Health education to reduce Type 2 Diabetes risk should focus on fostering current physical activities to meet prescribed standards and increasing fruit and vegetable consumption.

Contribution

The physical activity and diet self-care practices among older PLWH are inadequate in reducing Type 2 Diabetes risk, emphasising the need for appropriate health education.

Epigenetic aging in older people living with HIV in Eswatini: a pilot study of HIV and lifestyle factors and epigenetic aging

Background

People living with HIV (PLHIV) on effective antiretroviral therapy (ART) are living near-normal lives. Although they are less susceptible to AIDS-related complications, they remain highly vulnerable to non-communicable diseases (NCD). In this exploratory study of older PLHIV (OPLHIV) in Eswatini, we investigated whether biological aging (i.e., the difference between epigenetic age and chronological age, termed 'epigenetic age acceleration [EAA]') was associated with HIV-related parameters, and whether lifestyle factors modified these relationships. We calculated EAA focusing on the second-generation epigenetic clocks, PhenoAge and GrimAge, and a pace of aging biomarker (DunedinPACE) among 44 OPLHIV in Eswatini.

Results

Among participants, the PhenoAge clock showed older epigenetic age (68 years old [63, 77]) but a younger GrimAge epigenetic age (median=56 years old [interquartile range=50, 61]) compared to the chronological age (59 years old [54, 66]). Participants diagnosed with HIV at an older age showed slower DunedinPACE (β-coefficient [95% Confidence Interval]; -0.02 [-0.04, -0.01], p=0.002) and longer duration since HIV diagnosis was associated with faster DunedinPACE (0.02 [0.01, 0.04], p=0.002). The average daily dietary intake of fruits and vegetables was associated with faster DunedinPACE (0.12 [0.03, 0.22], p=0.01) and modified the relationship between HIV status variables (number of years living with HIV since diagnosis, age at HIV diagnosis, CD4+ T cell counts) and PhenoAge EAA, and DunedinPACE.

Conclusions

Biological age is accelerated in OPLHIV in Eswatini, with those living with HIV for a longer duration at risk for faster biological aging. Lifestyle factors, especially healthier diets, may attenuate biological aging in OPLHIV. To our knowledge, this is the first study to assess biological aging in Eswatini and one of the few in sub-Saharan Africa.

Compromised CD4:CD8 ratio recovery in people living with HIV aged over 50 years: an observational study

OBJECTIVES

Persistent CD4:CD8 ratio inversion (< 1) is associated with mortality in older people. We investigated the interaction of the effects of baseline CD8 count and age at HIV diagnosis on CD4:CD8 ratio recovery with antiretroviral therapy (ART).

METHODS

An observational study (1 January 2007 to 31 December 2016) was carried out using routinely collected data from the HIV outpatient services at Imperial College Healthcare NHS Trust, London, UK. CD4 and CD8 counts, prior to and during ART, treatment during primary HIV infection (PHI) and HIV-1 viral load were included in univariate and multivariate analyses using Cox proportional hazard regression.

RESULTS

Data were included for 876 patients starting ART, where HIV suppression was achieved. Of these patients, 741 of 876 (84.6%) were male and 507 of 876 (57.9%) were Caucasian. The median time on ART was 38 [interquartile range (IQR) 17-66] months. CD8 count change on ART was bidirectional; low CD8 counts (≤ 600 cells/μL) increased and high CD8 counts (> 900 cells/μL) decreased. The median pre-ART CD4:CD8 ratio was 0.41 (IQR 0.24-0.63), and recovery (≥ 1) occurred in 274 of 876 patients (31.3%). Pre- and post-ART CD4:CD8 ratios were lower in those aged > 50 years compared with young adults aged 18-30 years (P < 0.001 and P = 0.002, respectively). After adjustment, younger age at HIV diagnosis (P < 0.001) and treatment during PHI (P < 0.001) were favourable for CD4:CD8 ratio normalization.

CONCLUSIONS

Older age (> 50 years) at HIV diagnosis was associated with persistent CD4:CD8 ratio inversion, whereas treatment of PHI was protective. These findings confirm the need for testing and early treatment of people aged > 50 years, and could be used in a risk management algorithm for enhanced surveillance.

Efavirenz use and neurocognitive performance among older people living with HIV who were on antiretroviral therapy

This study was to compare global and domain-specific neurocognitive performance between older people living with HIV (PLWH) taking/not taking efavirenz (EFV) and HIV-negative controls. A cross-sectional study was conducted in Yongzhou city, China. All PLWH older than 50 years listed on the registry of Centres for Disease Control and Prevention were invited to join the study. Frequency matching was used to sample HIV-negative controls according to the distribution of age, sex, and years of formal education of older PLWH. A total of 308 older PLWH and 350 HIV-negative controls completed the face-to-face interview and neurocognitive assessment using the comprehensive neuropsychological test battery. After adjusting for significant confounders, older PLWH taking EFV showed poorer performance in memory (p = 0.020), verbal fluency (p = 0.002), and poorer global neurocognitive performance (p = 0.032) than those without EFV use. Compared to HIV-negative controls, older PLWH taking EFV had poorer performance in all neurocognitive domains (p values: <0.001-0.003) and poorer global neurocognitive performance (p < 0.001). Similar trends were observed when comparing older PLWH without using EFV versus HIV-negative controls, with the exception of verbal fluency (p = 0.560). Health care workers should monitor the neuropsychological performance of older PLWH, epically those who were taking EFV. Longitudinal studies are warranted.