Publications by authors named "Josephine Prynn"

Article Synopsis
  • The study addresses the rising prevalence of dementia in low- and middle-income countries, specifically focusing on older Ugandans, while highlighting the unique risk factors in African populations compared to global trends.
  • It employs innovative blood-based and retinal imaging biomarkers to investigate the causes of dementia and assess the complex needs of affected individuals for better support services.
  • By integrating cognitive screenings and detailed assessments, the research aims to enhance understanding of dementia and identify barriers to care within existing support structures in Uganda.
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Dementia is an important and growing issue in sub-Saharan Africa, but epidemiological data are lacking. Risk factors may differ from other regions due to high stroke incidence and HIV prevalence. Understanding the epidemiology of cognition in older adults in Africa is crucial for informing public health strategies to improve the lives of people with dementia and their carers.

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Article Synopsis
  • The study aimed to accurately measure kidney function in African populations and estimate the prevalence of kidney disease, as existing data is limited.
  • Researchers tested different methods, including serum creatinine and cystatin C, on over 2,500 participants from Malawi, Uganda, and South Africa, to compare their accuracy with the direct measurement of kidney function (mGFR).
  • Findings revealed that creatinine-based estimates often overestimated kidney function, particularly in individuals with low kidney function, leading to significantly higher prevalence rates of impaired kidney function when using more reliable mGFR measurements.
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Disability is a complex concept involving physical impairment, activity limitation, and participation restriction. The Washington Group developed a set of questions on six functional domains (seeing, hearing, walking, remembering, self-care, and communicating) to allow collection of comparable data on disability. We aimed to improve understanding of prevalence and correlates of disability in this low-income setting in Malawi.

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This analysis of surveys from six low- and middle-income countries (LMICs) aimed to (i) estimate the prevalence of disability among older adults and (ii) compare experiences and participation in key life areas among older people with and without disabilities which may show vulnerability during the COVID-19 pandemic. Data were analysed from district-level or national surveys in Cameroon, Guatemala, Haiti, India, Nepal and the Maldives, which across the six databases totalled 3499 participants aged 60 years and above including 691 people with disabilities. Disability was common among adults 60+, ranging from 9.

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Background: An epidemic of chronic kidney disease of unknown cause (CKDu) is occurring in rural communities in tropical regions of low-and middle-income countries in South America and India. Little information is available from Southern African countries which have similar climatic and occupational characteristics to CKDu-endemic countries. We investigated whether CKDu is prevalent in Malawi and identified its potential risk factors in this setting.

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Objectives: We investigated whether self-reported disability was associated with mortality in adults in rural Malawi.

Setting: Karonga Health and Demographic Surveillance Site (HDSS), Northern Malawi.

Participants: All adults aged 18 and over residing in the HDSS were eligible to participate.

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Background: The highest burden of hypertension is found in Sub-Saharan Africa (SSA) with a threefold greater mortality from stroke and other associated diseases. Ethnicity is known to influence the response to antihypertensives, especially in black populations living in North America and Europe. We sought to outline the impact of all commonly used pharmacological agents on both blood pressure reduction and cardiovascular morbidity and mortality in SSA.

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Background: Chronic kidney disease (CKD) is a substantial cause of morbidity and mortality worldwide with disproportionate effects in sub-Saharan Africa (SSA). The optimal methods to estimate glomerular filtration rate (GFR) and therefore to determine the presence of CKD in SSA are uncertain. We plan to measure iohexol excretion to accurately determine GFR in Malawi, South Africa and Uganda.

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: Sub-Saharan Africa faces region-specific risk factors for chronic kidney disease (CKD), such as nephrotoxic herbal medicines, antiretroviral therapy and infections, in addition to hypertension and diabetes. However, large epidemiological studies from this area are scarce. : In a cross-sectional survey of non-communicable diseases, we conducted a prevalence sub-study of CKD in two Malawian populations.

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Non-communicable diseases (NCD) and disability are both common, and increasing in magnitude, as a result of population ageing and a shift in disease burden towards chronic conditions. Moreover, disability and NCDs are strongly linked in a two-way association. People living with NCDs may develop impairments, which can cause activity limitations and participation restriction in the absence of supportive personal and environmental factors.

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Background: High dietary sodium intake is a major risk factor for hypertension. Data on population sodium intake are scanty in sub-Saharan Africa, despite a high hypertension prevalence in most countries.

Objective: We aimed to determine daily sodium intake in urban and rural communities in Malawi.

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A Pakistani man aged 60 years presented with personality change, aggression, paranoid delusions and sexual disinhibition while being treated for severe chest sepsis in intensive care. Collateral history confirmed that these personality changes had been developing over the course of the previous 2 years. He was found to have positive syphilis serology during a routine confusion screen, and the possibility of neurosyphilis was raised.

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