Publications by authors named "Memory Sachikonye"

Introduction: Depressive symptoms are highly prevalent among people with HIV, which can negatively impact HIV-related outcomes. We explore the cascade of mental healthcare for people with HIV experiencing depressive symptoms.

Methods: People with HIV who were part of the Pharmacokinetic and clinical Observations in PeoPle over fiftY (POPPY) study (2013-2016) were included.

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Background: We aimed to provide insights into the effects of comorbidities on sleep health in people with HIV by assessing associations between multimorbidity patterns and sleep outcomes in the Pharmacokinetic and clinical Observations in PeoPle over fiftY (POPPY) sub-study.

Methods: Principal component analysis identified six multimorbidity patterns among participants with HIV (n = 1073) at baseline: Cardiovascular diseases (CVDs), Sexually transmitted diseases, Metabolic, Mental/Joint, Neurological and Cancer/Other. Burden z-scores were calculated for each individual/pattern.

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HIV in the UK is concentrated in a few key populations, and African migrants are among them. To date, there has been no documented record of the personal experiences of this group to accompany the significant amount of epidemiological data on these communities. There is no record celebrating the contribution, resilience and lived experience of Africans living with HIV in the UK, their allies and their response to the epidemic.

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Background: Anticholinergic medications (ACMs) are associated with poorer age-related outcomes, including falls and frailty. We investigate associations between ACM use and recurrent falls and frailty among older (aged ≥50 years) people with HIV in the POPPY study.

Methods: Anticholinergic potential of co-medications at study entry was coded using the anticholinergic burden score, anticholinergic risk score, and Scottish Intercollegiate Guidelines Network score; drugs scoring ≥1 on any scale were defined as ACM.

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Background: Older people continue to be disproportionately affected by late HIV diagnosis, which results in increased morbidity and mortality. Despite high acceptance of HIV testing generally, older people are less likely to undergo testing than younger people. Two previous studies have been conducted, one focussing on patient-related and one focussing on clinician-related factors associated with HIV testing in older age (⩾50 years).

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Background: People with HIV have an increased risk for cardiovascular morbidity and mortality. Inflammation and immune activation may contribute to this excess risk.

Methods: We assessed thirty-one biomarkers in a subset of POPPY participants and identified three distinct inflammatory profiles: 'gut/immune activation', 'neurovascular', and 'reference' (relatively low levels of inflammation).

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Study Objectives: We investigated associations between inflammatory profiles/clusters and sleep measures in people living with HIV and demographically-/lifestyle-similar HIV-negative controls in the Pharmacokinetic and clinical Observations in PeoPle over fiftY (POPPY)-Sleep substudy.

Methods: Primary outcome was insomnia (Insomnia Severity Index [ISI]>15). Secondary sleep outcomes included 7-day actigraphy (e.

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Introduction: Pregnant women are routinely excluded from clinical trials, leading to the absence or delay in even the most basic pharmacokinetic (PK) information needed for dosing in pregnancy. When available, pregnancy PK studies use a small sample size, resulting in limited safety information. We discuss key study design elements that may enhance the timely availability of pregnancy data, including the role and timing of randomized controlled trials (RCTs) to evaluate pregnancy safety; efficacy and safety outcome measures; stand-alone protocols, platform trials, single arm studies, sample size and the effect that follow-up time during gestation has on analysis interpretations; and observational studies.

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Background: Individuals aged ≥ 50 years continue to be disproportionately affected by late HIV diagnosis, which is associated with poorer health outcomes and onward transmission. Despite HIV testing guidelines and high acceptability of HIV testing among all patients, clinicians are less likely to offer a test to an older individual. The aim of this study was to identify clinician-related factors associated with offering HIV testing to patients aged ≥ 50 years.

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Objectives: To investigate the associations of plasma lamivudine (3TC), abacavir (ABC), emtricitabine (FTC) and tenofovir (TFV) concentrations with cognitive function in a cohort of treated people with HIV (PWH).

Methods: Pharmacokinetics (PK) and cognitive function (Cogstate, six domains) data were obtained from PWH recruited in the POPPY study on either 3TC/ABC or FTC/tenofovir disoproxil fumarate (TDF)-containing regimens. Association between PK parameters (AUC0-24: area under the concentration-time curve over 24 hours, Cmax: maximum concentration and Ctrough: trough concentration) and cognitive scores (standardized into z-scores) were evaluated using rank regression adjusting for potential confounders.

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Objectives: The aim of this study was to evaluate the agreement between self-reported sleep measures and insomnia with objectively measured sleep parameters in people with HIV (PWH) and HIV-negative individuals.

Design: A cross-sectional analysis of PWH and lifestyle-similar HIV-negative individuals.

Methods: Self-reported measures included time spent in bed, sleep onset latency and a validated insomnia questionnaire.

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Study Objectives: We investigated associations between actigraphy-assessed sleep measures and cognitive function in people with and without HIV using different analytical approaches to better understand these associations and highlight differences in results obtained by these approaches.

Methods: Cognitive and 7-day/night actigraphy data were collected from people with HIV (PWH) and lifestyle-similar HIV-negative individuals from HIV and sexual health clinics in the United Kingdom/Ireland. A global cognitive T-score was obtained averaging the standardized individual cognitive test scores accounting for sociodemographics.

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Background: Self-reported sleep quality is poor in persons with human immunodeficiency virus (PWH), but prior studies commonly used nonspecific questionnaires, investigated only single sleep disorders, or lacked human immunodeficiency virus (HIV)-negative controls. We addressed these limitations in the Pharmacokinetics and Clinical Observations in People Over Fifty (POPPY) Sleep Substudy by assessing PWH and HIV-negative controls for insomnia, restless legs syndrome (RLS), and sleep apnea (SA).

Methods: Previously enrolled POPPY participants coenrolled in this substudy without regard to sleep symptoms.

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We investigated the correlations and agreement between cognitive assessments made using a computerised (CogState™, six domains) and a standard pen-and-paper battery (five domains) in PWH and lifestyle-similar HIV-negative individuals. Demographically adjusted domain and global -scores were obtained and used to define cognitive impairment according to the multivariate normative comparison (MNC) criteria. Correlations between -scores and the agreement between the classifications of cognitive impairment obtained from the two batteries were assessed using the Spearman's rank correlation and Cohen's , respectively.

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Objective: To investigate the prevalence of widespread pain among people with HIV (PWH) and describe associations with antiretroviral therapy (ART) and markers of HIV disease stage.

Design: Cross-sectional analysis of cohort study in the United Kingdom and Ireland.

Methods: Pain information was collected during the baseline visit (conducted from 2013 to 2015) through a self-completed manikin identifying pain at 15 sites from five body regions.

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Introduction: Antiretroviral therapy has improved the health of people living with HIV (PLW-HIV), though less is known about how this impacts on acute respiratory illness. These illnesses are a common cause of ill health in the general population and any increase in their frequency or severity in PLW-HIV might have significant implications for health-related quality of life and the development of chronic respiratory disease.

Methods: In a prospective observational cohort study following PLW-HIV and HIV negative participants for 12 months with weekly documentation of any acute respiratory illness, we compared the frequency, severity and healthcare use associated with acute respiratory illnesses to determine whether PLW-HIV continue to have a greater frequency or severity of such illnesses despite antiretroviral therapy.

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Background: We investigate the association of widespread pain with sleep quality among people with HIV and HIV-negative controls.

Setting: UK-based cohort.

Methods: Pain information was collected through a pain mannikin identifying affected body sites; pain was classified as widespread if pain was reported in ≥4 of 5 body regions and in ≥7 of 15 body sites, and as regional otherwise.

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We evaluated associations between history of syphilis infection and both cognitive function and depressive symptoms in people living with HIV (PLHIV) and comparable HIV-negative controls. Syphilis serological tests, cognitive function and depression were assessed in PLHIV and controls participating in the Pharmacokinetic and Clinical Observations in People Over Fifty study. Cognitive test scores were converted to demographically adjusted T-scores (mean = 50, SD = 10) and then averaged to obtain a global T-score.

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Background: Polypharmacy (use of ≥ five medications) increases the risk of drug-drug interactions and can lead to negative health outcomes. This study aimed to review the medications of people living with HIV (PLWH) and HIV-negative controls in the POPPY study and evaluate the frequency of polypharmacy and potential drug-drug interactions (PDDIs).

Methods: PDDIs between non-antiretroviral (ARV) drugs were analysed using the Lexicomp database, and PDDIs between non-ARV and ARV drugs using the Liverpool drug interaction database.

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Background: Despite a decline in the number of new HIV infections in the UK overall, the number and proportion of new HIV diagnoses in people aged ≥50 years continues to increase. People aged ≥50 years are disproportionately affected by late diagnosis, which is associated with poorer health outcomes, increased treatment complexity and increased healthcare costs. Late HIV diagnosis also has significant public health implications in terms of onward HIV transmission.

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Objective: We describe the prevalence of pain and its associations with healthcare resource utilization and quality-of-life.

Design: The POPPY Study recruited three cohorts: older people living with HIV (PLWH; ≥50 years, n = 699), younger demographically/lifestyle similar PLWH (less than 50 years, n = 374) and older demographically/lifestyle similar HIV-negative (≥50 years, n = 304) people from April 2013 to February 2016.

Methods: Current pain and pain-related healthcare use was collected via a self-reported questionnaire.

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Background: Timely diagnosis of human immunodeficiency virus (HIV) enables access to antiretroviral treatment, which reduces mortality, morbidity and further transmission in people living with HIV. In the UK, late diagnosis among black African people persists. Novel methods to enhance HIV testing in this population are needed.

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The objective of this study was to identify the aspects of healthcare that are most valued by people with HIV and to describe their concerns and preferences for the future delivery of services for non-HIV-related illness. Twelve focus groups of people receiving HIV care were conducted in community settings in South-East England. Groups were quota sampled based on age, gender, sexual orientation and ethnicity.

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