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Gizaw M, Parkin DM, Stöter O, Bukirwa P, Seife E, Chesumbai G, Korir A, Liu B, Manraj SS, Nda G, Somdyala NIM, Kantelhardt EJ. Ovarian cancer survival in sub-Saharan Africa by human development index and histological subtypes: A population-based registry study. Int J Cancer 2024; 154:1911-1919. [PMID: 38339849 DOI: 10.1002/ijc.34877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/30/2023] [Accepted: 12/13/2023] [Indexed: 02/12/2024]
Abstract
Ovarian cancer (OC) is the fourth most common cancer of women in sub-Saharan Africa (SSA), although few data have been published on population-level survival. We estimate ovarian cancer survival in SSA by human development index and histological subtype, using data from seven population-based cancer registries in six countries: Kenya (Nairobi and Eldoret), Mauritius, Uganda (Kampala), Cote d'Ivoire (Abidjan), Ethiopia (Addis Ababa) and South Africa (Eastern Cape). A total of 644 cases diagnosed during 2008-2014 were included, with 77% being of epithelial subtypes (range 47% [Abidjan]-80% [Mauritius]). The overall observed survival in the study cohort was 73.4% (95% CI: 69.8, 77.0) at 1 year, 54.4% (95% CI: 50.4, 58.7) at 3 years and 45.0% (95% CI: 41.0, 49.4) at 5 years. Relative survival at Year 1 ranged from 44.4% in Kampala to 86.3% in Mauritius, with a mean for the seven series of 67.4%. Relative survival was highest in Mauritius at 72.2% and lowest in Kampala, Uganda at 19.5%, with a mean of 47.8%. There was no difference in survival by age at diagnosis. Patients from high and medium HDI countries had significantly better survival than those from low HDI countries. Women with cancers of epithelial cell origin had much lower survival compared to women with other histological subtypes (p = .02). Adjusted for the young age of the African patients with ovarian cancer (44% aged <50) survival is much lower than in USA or Europe, and underlines the need for improvements in the access to diagnosis and treatment of OC in SSA.
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Affiliation(s)
- Muluken Gizaw
- Department of Preventive Medicine, School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia
- Global Health Working Group, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- NCD Working Group, School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia
| | - Donald Maxwell Parkin
- Cancer Surveillance Unit, International Agency for Research on Cancer, Lyon, France
- African Cancer Registry Network (AFCRN), Oxford, UK
| | - Ole Stöter
- Global Health Working Group, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- Department of Gynaecology, Martin-Luther-Universitat Halle-Wittenberg, Halle, Germany
| | - Phiona Bukirwa
- Kampala Cancer Registry and Department of Pathology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Edom Seife
- Addis Ababa Cancer Registry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Gladys Chesumbai
- Eldoret Cancer Registry, Moi Teaching and Referral Hospital, Eldoret, Kenya
| | - Anne Korir
- Nairobi Cancer Registry, Kenya Medical Research Institute, Nairobi, Kenya
| | - Biying Liu
- African Cancer Registry Network (AFCRN), Oxford, UK
| | | | - Guy Nda
- Abidjan Cancer Registry, Abidjan, Ivory Coast
| | - Nontuthuzelo I M Somdyala
- South African Medical Research Council, Eastern Cape Cancer Registry, Burden of Disease Research Unit, Cape Town, South Africa
| | - Eva Johanna Kantelhardt
- Global Health Working Group, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- Department of Gynaecology, Martin-Luther-Universitat Halle-Wittenberg, Halle, Germany
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Adeomi AA, Lawal NOO. Overweight and obesity among female adolescents in Nigeria; an emerging, but under-reported epidemic. BMC Womens Health 2024; 24:302. [PMID: 38773434 PMCID: PMC11106934 DOI: 10.1186/s12905-024-03146-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 05/15/2024] [Indexed: 05/23/2024] Open
Abstract
BACKGROUND Overweight and obesity are increasing at epidemic levels in all ages globally, but there is little nationally representative data on female adolescents in Nigeria. The focus on female adolescents is important because of the negative implications of overweight and obesity on their health and survival, and that of their unborn children. AIM To estimate the prevalence and identify the determinants of overweight and obesity among female adolescents in Nigeria. METHODS Cross-sectional study using data from the Nigeria demographic and health survey, 2018. A total of 2,721 female adolescents aged 15-19 years were selected using cluster sampling technique. Overweight and obesity were determined using BMI-for-age reference values of World Health Organization and different explanatory variables at the individual, household and community levels were included. Binary logistic regression analysis was used to identify the determinants of overweight/obesity using five models. RESULTS The mean age of the respondents was 16.8 ± 1.4 years. The prevalence rate of overweight/obesity was 10.2%, but with a large variation in the geographical and socio-economic distribution. At the crude/unadjusted rate, nearly all the explanatory variables showed a statistically significant association with overweight and obesity, but at the full model which controlled for all the explanatory variables, only the household wealth index retained its statistically significant association, such that female adolescents who were from richer and richest households had about 3 times higher odds of being obese compared to those from the poorest households. (OR: 2.7; p = 0.018; CI: 1.18-6.18), (OR: 2.8; p = 0.027; CI: 1.13-7.06) respectively. CONCLUSION The prevalence of overweight/obesity among female adolescents in Nigeria was 10.2%. The household wealth index remained the only factor with a statistically significant association with overweight and obesity after controlling for confounders. Efforts at addressing overweight and obesity among female adolescents in Nigeria should target those from the richer/richest households.
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Affiliation(s)
- Adeleye Abiodun Adeomi
- Department of Community Health, Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Osun State, Nigeria.
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Payne M, Pooke F, Holder-Pearson L, Chase JG, de Bock M, Campbell J, Knopp J. Bench-Side Dose Accuracy of an Open-Source Ultra-Low-Cost Insulin-Pump, With Testing Conducted to IEC 60601-2-24. J Diabetes Sci Technol 2024; 18:709-713. [PMID: 36476068 PMCID: PMC11089868 DOI: 10.1177/19322968221142316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
With the prevalence of diabetes higher than ever, governments and people with diabetes are facing significant treatment and indirect costs associated with managing their condition. An ultra-low-cost insulin pump is a possible solution to improving health disparities. This article presents test results for an insulin-pump built from low-cost components (bill of materials < $US100). All testing was completed in accordance with IEC60601-2-24, and results were benchmarked against a commercial pump. Results showed the ultra-low-cost pump has comparable accuracy to the commercially available insulin pump with testing displaying an overall accuracy of 0.089% and -0.392%, respectively. These results show that an ultra-low-cost pump can accurately deliver insulin in limited bench testing. Testing in other environments and scenarios is required to fully meet IEC60601-2-24 standards.
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Affiliation(s)
- Matthew Payne
- Centre for Bio-engineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Francis Pooke
- Centre for Bio-engineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Lui Holder-Pearson
- Centre for Bio-engineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
- Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand
| | - J. Geoffrey Chase
- Centre for Bio-engineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Martin de Bock
- Department of Paediatrics, University of Otago, Christchurch, New Zealand
| | - Jake Campbell
- Centre for Bio-engineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Jennifer Knopp
- Centre for Bio-engineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
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Manyara AM, Mwaniki E, Gill JMR, Gray CM. Knowledge, perceptions and practices towards diabetes risk in sub-Saharan Africa: a mixed-methods scoping review. Public Health Nutr 2024; 27:e104. [PMID: 38533768 PMCID: PMC11010065 DOI: 10.1017/s1368980024000752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 03/03/2024] [Accepted: 03/19/2024] [Indexed: 03/28/2024]
Abstract
OBJECTIVE To synthesise current evidence on knowledge, perceptions and practices towards type 2 diabetes risk in sub-Saharan Africa. DESIGN Mixed-methods scoping review, which included 101 studies (seventy-three quantitative, twenty qualitative and eight mixed methods) from seven electronic databases. SETTING Sub-Saharan Africa, 2000-2023. PARTICIPANTS Men and women without diabetes with mean ages ranging from 20 to 63 years. RESULTS The majority of participants in most studies knew the three main diabetes modifiable risk factors - excess weight, unhealthy diet and physical inactivity. However, most people with excess weight in almost all studies underestimated their weight. Further, the self-described ideal body weight was between midpoint of normal weight and the upper limits of overweight in most quantitative studies and was described as not too skinny but not too fat in qualitative studies. In the majority of studies, participants reported low engagement in weight control, high regular sugar intake, and low regular fruit and vegetable intake but moderate to high engagement in physical activity. Barriers to reducing diabetes risk were social (e.g. societal perceptions promoting weight gain) and environmental (e.g. limited affordability of healthy foods, high accessibility of Western diets and lack of physical activity facilities). CONCLUSION There is a need for multicomponent type 2 diabetes prevention interventions that increase knowledge of identifying diabetes risk (e.g. what constitutes excess weight) and create social and physical environments that support healthy lifestyles (e.g. societal perceptions that promote healthy living, increased availability and affordability of healthy foods and physical activity facilities).
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Affiliation(s)
- Anthony Muchai Manyara
- School of Health and Wellbeing, University of
Glasgow, Glasgow, UK
- Department of Health Systems Management and Public Health,
Technical University of Kenya, Nairobi,
Kenya
- Global Health and Ageing Research Unit, Bristol Medical School,
University of Bristol, Bristol,
UK
| | - Elizabeth Mwaniki
- Department of Health Systems Management and Public Health,
Technical University of Kenya, Nairobi,
Kenya
| | - Jason MR Gill
- School of Cardiovascular and Metabolic Health, University of
Glasgow, Glasgow, UK
| | - Cindy M Gray
- School of Health and Wellbeing, University of
Glasgow, Glasgow, UK
- School of Social and Political Sciences, University of
Glasgow, Glasgow, UK
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Kurniawan AL, Schretzmann J, Paramastri R, Cho A, Sié A, Fischer MS, Bärnighausen T, Ditzen B. Relationship satisfaction and metabolic health parameters: a cross-sectional study in Burkinabe population of older adults. BMC Public Health 2024; 24:827. [PMID: 38491462 PMCID: PMC10943782 DOI: 10.1186/s12889-024-17998-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/05/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND Over- and undernutrition coexist in many African countries and pose a threat to metabolic health. This study assessed the associations between relationship satisfaction and Body Mass Index (BMI), waist circumference (WC), and glycated hemoglobin (HbA1c), in a rural population of older adults in Burkina Faso. It also explored potential gender differences and the mediating role of depressive symptoms. METHODS Data from the "Centre de Recherche en Santé de Nouna (CRSN) Heidelberg Aging Study (CHAS)," a cross-sectional population-based study conducted in 2018 in Burkina Faso, were used in our study. Hierarchical linear regression models were applied for each of the three outcome variables. Among 2291 participants aged 40 years or older who provided data on relationship satisfaction, 2221, 2223, and 2145 participants had BMI, waist circumference (WC), and HbA1c values respectively. RESULTS Higher relationship satisfaction (CSI-4 score) was associated with increased BMI (β = 0.05, p = 0.031) and WC (β = 0.12, p = 0.039). However, the association of CSI-4 and BMI became non-significant after controlling for depressive symptoms (PHQ-9 score) and physical inactivity (BMI: β = 0.04, p = 0.073). Depressive symptoms fully mediated the relationship between relationship satisfaction and BMI (β = -0.07, p = 0.005). There was no significant association between relationship satisfaction and HbA1c. These results were consistent across genders and age groups. CONCLUSION Higher relationship satisfaction may lead to increased body weight among Burkinabe adults aged 40 years and older, and depressive symptoms may be a mediator in this association.
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Affiliation(s)
- Adi Lukas Kurniawan
- Heidelberg Institute of Global Health, Heidelberg University Hospital, Heidelberg University, Heidelberg, Germany.
| | - Julius Schretzmann
- Institute of Medical Psychology, Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | - Rathi Paramastri
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Alyssa Cho
- Epidemiology, Public Health, and Impact, International Vaccine Institute, Seoul, South Korea
| | - Ali Sié
- Centre de Recherche en Santé de Nouna, Nouna, Burkina Faso
| | - Melanie S Fischer
- Institute of Medical Psychology, Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
- Department of Psychology, University of Marburg, Marburg, Germany
| | - Till Bärnighausen
- Heidelberg Institute of Global Health, Heidelberg University Hospital, Heidelberg University, Heidelberg, Germany.
- Africa Health Research Institute (AHRI), KwaZulu-Natal, Somkhele, South Africa.
| | - Beate Ditzen
- Institute of Medical Psychology, Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany.
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Madlala HP, Myer L, Geffen H, Meyer D, Mendham AE, Goedecke JH, Bengtson AM, Jao J, Dugas LR. Measurement of body composition in postpartum South African women living with and without HIV infection. Front Nutr 2024; 11:1280425. [PMID: 38385007 PMCID: PMC10879415 DOI: 10.3389/fnut.2024.1280425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 01/22/2024] [Indexed: 02/23/2024] Open
Abstract
Background While several methodologies are available to measure adiposity, few have been validated in sub-Saharan African (SSA) and none in postpartum African women living with HIV (WLHIV). We compared bioelectrical impendence analysis (BIA) and air displacement plethysmography (ADP) against dual x-ray absorptiometry (DXA) in South African women and examined differences by HIV and body mass index (BMI) status. Methods Lin's concordance correlation coefficient (CCC) test was used to examine fat mass (FM), fat free mass (FFM), and total body fat percent (%BF) difference between BIA vs. DXA, and ADP vs. DXA in women living with HIV (n = 57) and without HIV (n = 25). The Bland Altman test was used to assess mean differences and the direction of bias. Results The median age was 31 years (IQR, 26-35) and months postpartum were 11 (IQR, 7-16), 44% of the women had obesity. Lin's CCC for BIA and ADP vs. DXA were both 0.80 for %BF and 0.97 for FM, and 0.86 and 0.80 for FFM, respectively. Mean differences (DXA-BIA and ADP estimates) were 0.22 ± 4.54% (p = 0.54) and 3.35 ± 3.27% (p < 0.01) for %BF, -0.82 ± 3.56 kg (p = 0.06) and 1.43 ± 2.68 kg (p = 0.01) for FM, -1.38 ± 3.61 kg (p = 0.01) and - 3.34 ± 2.37 kg (p < 0.01) for FFM, respectively. BIA overestimated %BF in WLHIV and underestimated it in women with obesity. Conclusion Body composition measurements using BIA and ADP correlated well with DXA, thereby providing alternative, safe tools for measuring postpartum FM and FFM in SSA women, including WLHIV.
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Affiliation(s)
- Hlengiwe P. Madlala
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town, South Africa
| | - Landon Myer
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town, South Africa
| | - Hayli Geffen
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town, South Africa
| | - Demi Meyer
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town, South Africa
| | - Amy E. Mendham
- Riverland Academy of Clinical Excellence (RACE), Riverland Mallee Coorong Local Health Network, South Australia Health, Berri, SA, Australia
- Division of Physiological Sciences, Department of Human Biology, Faculty of Health Sciences, Health Through Physical Activity, Lifestyle and Sport Research Centre (HPALS), FIMS International Collaborating Centre of Sports Medicine, University of Cape Town, Cape Town, South Africa
| | - Julia H. Goedecke
- Division of Physiological Sciences, Department of Human Biology, Faculty of Health Sciences, Health Through Physical Activity, Lifestyle and Sport Research Centre (HPALS), FIMS International Collaborating Centre of Sports Medicine, University of Cape Town, Cape Town, South Africa
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa
| | - Angela M. Bengtson
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Jennifer Jao
- Division of Infectious Diseases, Department of Paediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Lara R. Dugas
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town, South Africa
- Public Health Sciences, Parkinson School of Health Sciences and Public Health, Loyola University Chicago, Maywood, IL, United States
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Issaka A, Paradies Y, Cameron AJ, Stevenson C. The association between body weight indices, behavioral factors, and type 2 diabetes mellitus in Africa: A systematic review and meta-analysis of population-based epidemiological studies. Nutr Metab Cardiovasc Dis 2024; 34:1-18. [PMID: 38016892 DOI: 10.1016/j.numecd.2023.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 05/07/2023] [Accepted: 06/14/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND AND AIM Type 2 diabetes mellitus (T2DM) is a significant public health concern in Africa. While the associations between modifiable risk factors and T2DM are likely to be Africa-specific, their overall estimations have not been published. This study aimed to use systematic and meta-analytic methods to examine the strength of associations between modifiable risk factors and T2DM in Africa. METHODS AND RESULTS A systematic search of literature published between January 2000 to March 2022 was conducted. The review included only population-based studies and data extracted from 57 studies. Of these, unadjusted data from 50 studies were included in meta-analysis. With considerable heterogeneity between studies, random-effect models were calculated to ascertain the odds ratios (OR) and 95% confidence intervals (CI) for the associations between obesity (OB) and overweight (OV), defined by BMI; central obesity (waist circumference (OB-WC), waist-to-hip-ratio (OB-WHR)), alcohol, fruit and vegetable consumption, smoking, physical activity (PA) and T2DM. Moderator effects of age, African regions, and urban/rural location were assessed. Risk factors associated with T2DM include BMI-OB [OR = 3.05, 95% CI: (2.58, 3.61)], BMI-OV [OR = 2.38, 95% CI: (1.51, 3.75)], and BMI-OV/OB [OR = 2.07, 95% CI: (1.82, 2.34)]; OB-WC [OR = 2.58, 95% CI: (2.09, 3.18)] and OB-WHR [OR = 2.22, 95% CI: (1.69, 2.92)]; PA [OR = 1.85, 95% CI: (1.50, 2.30)]. Significant moderator effects were not observed. CONCLUSION Obesity defined by BMI and central obesity, but not behavioral risk factors were most strongly associated with T2DM in African populations, emphasizing the need for obesity prevention to limit the rise of T2DM. REGISTRATION The PROSPERO registration number is CRD42016043027.
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Affiliation(s)
- Ayuba Issaka
- Global Obesity Centre (GLOBE), School of Health and Social Development, Faculty of Health, Institute for Health Transformation, Deakin University, 1 Gheringhap St, Geelong, VIC 3220, Australia; Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, VIC 3125, Australia; Baker Heart and Diabetes Institute, Non-Communicable Diseases and Implementation Science Unit, VIC, Australia.
| | - Yin Paradies
- Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, VIC 3125, Australia
| | - Adrian J Cameron
- Global Obesity Centre (GLOBE), School of Health and Social Development, Faculty of Health, Institute for Health Transformation, Deakin University, 1 Gheringhap St, Geelong, VIC 3220, Australia
| | - Christopher Stevenson
- Global Obesity Centre (GLOBE), School of Health and Social Development, Faculty of Health, Institute for Health Transformation, Deakin University, 1 Gheringhap St, Geelong, VIC 3220, Australia
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Meeks KAC, Bentley AR, Assimes TL, Franceschini N, Adeyemo AA, Rotimi CN, Doumatey AP. Mendelian randomization analyses suggest a causal role for circulating GIP and IL-1RA levels in homeostatic model assessment-derived measures of β-cell function and insulin sensitivity in Africans without type 2 diabetes. Genome Med 2023; 15:108. [PMID: 38049854 PMCID: PMC10694992 DOI: 10.1186/s13073-023-01263-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 11/21/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND In vitro and in vivo studies have shown that certain cytokines and hormones may play a role in the development and progression of type 2 diabetes (T2D). However, studies on their role in T2D in humans are scarce. We evaluated associations between 11 circulating cytokines and hormones with T2D among a population of sub-Saharan Africans and tested for causal relationships using Mendelian randomization (MR) analyses. METHODS We used logistic regression analysis adjusted for age, sex, body mass index, and recruitment country to regress levels of 11 cytokines and hormones (adipsin, leptin, visfatin, PAI-1, GIP, GLP-1, ghrelin, resistin, IL-6, IL-10, IL-1RA) on T2D among Ghanaians, Nigerians, and Kenyans from the Africa America Diabetes Mellitus study including 2276 individuals with T2D and 2790 non-T2D individuals. Similar linear regression models were fitted with homeostatic modelling assessments of insulin sensitivity (HOMA-S) and β-cell function (HOMA-B) as dependent variables among non-T2D individuals (n = 2790). We used 35 genetic variants previously associated with at least one of these 11 cytokines and hormones among non-T2D individuals as instrumental variables in univariable and multivariable MR analyses. Statistical significance was set at 0.0045 (0.05/11 cytokines and hormones). RESULTS Circulating GIP and IL-1RA levels were associated with T2D. Nine of the 11 cytokines and hormones (exceptions GLP-1 and IL-6) were associated with HOMA-S, HOMA-B, or both among non-T2D individuals. Two-stage least squares MR analysis provided evidence for a causal effect of GIP and IL-RA on HOMA-S and HOMA-B in multivariable analyses (GIP ~ HOMA-S β = - 0.67, P-value = 1.88 × 10-6 and HOMA-B β = 0.59, P-value = 1.88 × 10-5; IL-1RA ~ HOMA-S β = - 0.51, P-value = 8.49 × 10-5 and HOMA-B β = 0.48, P-value = 5.71 × 10-4). IL-RA was partly mediated via BMI (30-34%), but GIP was not. Inverse variance weighted MR analysis provided evidence for a causal effect of adipsin on T2D (multivariable OR = 1.83, P-value = 9.79 × 10-6), though these associations were not consistent in all sensitivity analyses. CONCLUSIONS The findings of this comprehensive MR analysis indicate that circulating GIP and IL-1RA levels are causal for reduced insulin sensitivity and increased β-cell function. GIP's effect being independent of BMI suggests that circulating levels of GIP could be a promising early biomarker for T2D risk. Our MR analyses do not provide conclusive evidence for a causal role of other circulating cytokines in T2D among sub-Saharan Africans.
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Affiliation(s)
- Karlijn A C Meeks
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, 12 South Drive Bldg 12A ste 1025, Bethesda, MD, 20892-5611, USA.
| | - Amy R Bentley
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, 12 South Drive Bldg 12A ste 1025, Bethesda, MD, 20892-5611, USA
| | - Themistocles L Assimes
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
- VA Palo Alto Healthcare System, Palo Alto, CA, USA
| | - Nora Franceschini
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC, USA
| | - Adebowale A Adeyemo
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, 12 South Drive Bldg 12A ste 1025, Bethesda, MD, 20892-5611, USA
| | - Charles N Rotimi
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, 12 South Drive Bldg 12A ste 1025, Bethesda, MD, 20892-5611, USA
| | - Ayo P Doumatey
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, 12 South Drive Bldg 12A ste 1025, Bethesda, MD, 20892-5611, USA.
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Dolango B, Mesfin FB, Wondafrash M, Popp AJ. Establishing a Structured Neurosurgery Service and Residency Training Program in Ethiopia: The St. Paul's Hospital Millennium Medical College's Experience. World Neurosurg 2023; 180:88-90. [PMID: 37741332 DOI: 10.1016/j.wneu.2023.09.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/25/2023]
Affiliation(s)
- Birhanu Dolango
- Department of Neurosurgery, St Paul's Millennium Medical College, Monrovia, Maryland, USA.
| | - Fassil B Mesfin
- Division of Spine, Department of Neurosurgery-Long School of Medicine, UT Health San Antonio -MD Anderson Cancer Center, San Antonio, Texas, USA
| | - Mulualem Wondafrash
- Neurosurgery, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - A John Popp
- Department of Neurosurgery, Albany Medical College, Albany, New York, USA
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Takyi A, Carrara VI, Dahal P, Przybylska M, Harriss E, Insaidoo G, Barnes KI, Guerin PJ, Stepniewska K. Characterisation of populations at risk of sub-optimal dosing of artemisinin-based combination therapy in Africa. PLOS GLOBAL PUBLIC HEALTH 2023; 3:e0002059. [PMID: 38039291 PMCID: PMC10691722 DOI: 10.1371/journal.pgph.0002059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/25/2023] [Indexed: 12/03/2023]
Abstract
Selection of resistant malaria strains occurs when parasites are exposed to inadequate antimalarial drug concentrations. The proportion of uncomplicated falciparum malaria patients at risk of being sub-optimally dosed with the current World Health Organization (WHO) recommended artemisinin-based combination therapies (ACTs) is unknown. This study aims to estimate this proportion and the excess number of treatment failures (recrudescences) associated with sub-optimal dosing in Sub-Saharan Africa. Sub-populations at risk of sub-optimal dosing include wasted children <5 years of age, patients with hyperparasitaemia, pregnant women, people living with HIV, and overweight adults. Country-level data on population structure were extracted from openly accessible data sources. Pooled adjusted Hazard Ratios for PCR-confirmed recrudescence were estimated for each risk group from published meta-analyses using fixed-effect meta-analysis. In 2020, of the estimated 153.1 million uncomplicated P. falciparum malaria patients in Africa, the largest risk groups were the hyperparasitaemic patients (13.2 million, 8.6% of uncomplicated malaria cases) and overweight adults (10.3 million, 6.7% of uncomplicated cases). The estimated excess total number of treatment failures ranged from 0.338 million for a 98% baseline ACT efficacy to 1.352 million for a 92% baseline ACT efficacy. Our study shows that an estimated nearly 1 in 4 people with uncomplicated confirmed P. falciparum malaria in Africa are at risk of receiving a sub-optimal antimalarial drug dosing. This increases the risk of antimalarial drug resistance and poses a serious threat to malaria control and elimination efforts. Changes in antimalarial dosing or treatment duration of current antimalarials may be needed and new antimalarials development should ensure sufficient drug concentration levels in these sub-populations that carry a high malaria burden.
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Affiliation(s)
- Abena Takyi
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Infectious Diseases Data Observatory (IDDO), Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, United Kingdom
- Department of Child Health, Korle Bu Teaching Hospital, Accra, Ghana
| | - Verena I. Carrara
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Infectious Diseases Data Observatory (IDDO), Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, United Kingdom
- Institute of Global Health, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Prabin Dahal
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Infectious Diseases Data Observatory (IDDO), Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, United Kingdom
| | | | - Eli Harriss
- The Knowledge Centre, Bodleian Health Care Libraries, University of Oxford, Oxford, United Kingdom
| | | | - Karen I. Barnes
- Infectious Diseases Data Observatory (IDDO), Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, United Kingdom
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Philippe J. Guerin
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Infectious Diseases Data Observatory (IDDO), Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, United Kingdom
| | - Kasia Stepniewska
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Infectious Diseases Data Observatory (IDDO), Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, United Kingdom
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11
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Williams V, Haumba S, Ngwenya-Ngcamphalala F, Mafukidze A, Musarapasi N, Byarugaba H, Chiripashi S, Dlamini M, Maseko T, Dlamini NA, Nyapokoto C, Kibwana S, Bongomin P, Mazibuko S, Bhembe F, Ojoo S, Okello V, Bazira D. Implementation of the Automated Medication Dispensing System-Early Lessons From Eswatini. Int J Public Health 2023; 68:1606185. [PMID: 37901592 PMCID: PMC10600347 DOI: 10.3389/ijph.2023.1606185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/28/2023] [Indexed: 10/31/2023] Open
Abstract
Objectives: This article describes the implementation of an automated medication dispensing system (AMDS) in Eswatini to increase medication access and presents the early lessons from this implementation. Methods: The AMDS was installed at four health facilities across two regions through collaborative stakeholder engagement. Healthcare workers were trained, and clients who met the inclusion criteria accessed their medications from the system. Each step of the implementation was documented and summarised in this article. Results: Early lessons suggest that implementation of the AMDS is acceptable and feasible to clients and healthcare workers and that phased introduction of medication classes, commencing with antiretroviral therapy (ART) and incorporating other medications in later phases is feasible. Additionally, improved client-centred messaging and communication, consistent power supply and internet network connectivity, and scheduling medication pickup with other services increase AMDS system utilisation. Conclusion: Eswatini has many clients living with HIV and non-communicable diseases (NCDs). Easy, convenient, quick, non-stigmatising and client-centred access to ART and medication for NCDs is critical in addressing retention in care and achieving optimal treatment outcomes.
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Affiliation(s)
- Victor Williams
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Samson Haumba
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
- Center for Global Health Practice and Impact, Georgetown University, Washington, DC, United States
| | - Fikile Ngwenya-Ngcamphalala
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
- Eswatini National AIDS Program, Mbabane, Eswatini
| | - Arnold Mafukidze
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | - Normusa Musarapasi
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | - Hugben Byarugaba
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | - Simbarashe Chiripashi
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | - Makhosazana Dlamini
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | - Thokozani Maseko
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | | | | | - Sharon Kibwana
- Center for Global Health Practice and Impact, Georgetown University, Washington, DC, United States
| | - Pido Bongomin
- Center for Global Health Practice and Impact, Georgetown University, Mbabane, Eswatini
| | - Sikhathele Mazibuko
- Division of Global HIV and TB, Centers for Disease Control and Prevention, Mbabane, Eswatini
| | | | - Sylvia Ojoo
- Center for Global Health Practice and Impact, Georgetown University, Washington, DC, United States
| | | | - Deus Bazira
- Center for Global Health Practice and Impact, Georgetown University, Washington, DC, United States
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12
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Doumatey AP, Bentley AR, Akinyemi R, Olanrewaju TO, Adeyemo A, Rotimi C. Genes, environment, and African ancestry in cardiometabolic disorders. Trends Endocrinol Metab 2023; 34:601-621. [PMID: 37598069 PMCID: PMC10548552 DOI: 10.1016/j.tem.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/21/2023]
Abstract
The past two decades have been characterized by a substantial global increase in cardiometabolic diseases, but the prevalence and incidence of these diseases and related traits differ across populations. African ancestry populations are among the most affected yet least included in research. Populations of African descent manifest significant genetic and environmental diversity and this under-representation is a missed opportunity for discovery and could exacerbate existing health disparities and curtail equitable implementation of precision medicine. Here, we discuss cardiometabolic diseases and traits in the context of African descent populations, including both genetic and environmental contributors and emphasizing novel discoveries. We also review new initiatives to include more individuals of African descent in genomics to address current gaps in the field.
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Affiliation(s)
- Ayo P Doumatey
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Amy R Bentley
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Rufus Akinyemi
- Neuroscience and Ageing Research Unit, Institute for Advanced Medical Research and Training and Centre for Genomic and Precision Medicine, College of Medicine, University of Ibadan, Ibadan, Nigeria; Department of Neurology, University College Hospital, Ibadan, Nigeria
| | - Timothy O Olanrewaju
- Division of Nephrology, Department of Medicine, University of Ilorin & University of Ilorin Teaching Hospital, Ilorin, Nigeria
| | - Adebowale Adeyemo
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Charles Rotimi
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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13
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Issaka A, Stevenson C, Paradies Y, Houehanou YCN, Bosu WK, Kiwallo JB, Wesseh CS, Houinato DS, Nazoum DJP, Cameron AJ. Association between urban-rural location and prevalence of type 2 diabetes and impaired fasting glucose in West Africa: a cross-sectional population-based epidemiological study. BMJ Open 2023; 13:e063318. [PMID: 37734888 PMCID: PMC10514614 DOI: 10.1136/bmjopen-2022-063318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/13/2023] [Indexed: 09/23/2023] Open
Abstract
OBJECTIVES We investigated the association between urban/rural location and both type 2 diabetes mellitus (T2DM) and pre-diabetes among populations of five West African countries. DESIGN Cross-sectional studies, using the WHO Stepwise (STEPs) survey data. SETTING National representative data of both urban and rural areas from Benin, Burkina Faso, Ghana, Liberia and Mali. PARTICIPANTS Adults comprising 15 468 participants (6774 men and 8746 women; 7663 urban and 7805 rural residents) aged between 25 and 64 years. RESULTS The age and sex-adjusted prevalence of T2DM was 6.2% for urban areas and 2.5% for rural areas. The prevalence of impaired fasting glucose (IFG) was 6.6% for urban areas, and 3.0% for rural areas. No differences by sex were observed. The crude relative risk (RR) and 95% CI of T2DM and IFG in urban compared with rural areas were 2.69 (1.85 to 3.91) and 2.37 (1.53 to 3.66), respectively. This reduced to RR: 2.03, 95% CI (1.34 to 3.08) and RR: 2.04, 95% CI (1.27 to 3.28), respectively, after adjusting for covariables. CONCLUSION The prevalence of both T2DM and IFG was more than two times as high in urban areas compared with rural areas in West Africa. Behavioural risk factors are common among urban populations, with ongoing urbanisation expected to drive increases in the prevalence of T2DM. These results could guide planning for T2DM screening, preventive strategies and resource allocation in West Africa.
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Affiliation(s)
- Ayuba Issaka
- School of Health and Social Development, Global Obesity Centre (GLOBE), Institute for Health Transformation (IHT), Faculty of Health, Deakin University, Geelong, Victoria, Australia
- Non-Communicable Diseases and Implementation Science Unit, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, Geelong, Victoria, Australia
| | - Christopher Stevenson
- School of Health and Social Development, Global Obesity Centre (GLOBE), Institute for Health Transformation (IHT), Faculty of Health, Deakin University, Geelong, Victoria, Australia
| | - Yin Paradies
- Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, Geelong, Victoria, Australia
| | - Yessito Corine N Houehanou
- National School of Senior Technicians Training in Public Health and Epidemiological Surveillance, University of Parakou, Parakou, Borgou, Benin
| | - William K Bosu
- Department of Public Health and Research, West African Health Organisation, Bobo-Dioulasso, Haut-Bassin, Burkina Faso
| | - Jean Baptiste Kiwallo
- Directorate of Population Health Protection (DPSP) of Burkina Faso, Ministry of Health, Ouagadougou, Burkina Faso
| | - Chea Sanford Wesseh
- Republic of Liberia Ministry of Health, Congo Town, Monrovia, Montserrado, Liberia
| | - Dismand Stephan Houinato
- Laboratory of Epidemiology of Chronic and Neurological Diseases (LEMACEN), Faculty of Health Sciences, University of Abomey Calavi, Cotonou, Benin
| | - Diarra J P Nazoum
- Non-Communicable Diseases and National Directorate of Health, Ministry of Health and Public Hygiene, Bamako, Mali
| | - Adrian J Cameron
- School of Health and Social Development, Global Obesity Centre (GLOBE), Institute for Health Transformation (IHT), Faculty of Health, Deakin University, Geelong, Victoria, Australia
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14
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Singh U, Olivier S, Cuadros D, Castle A, Moosa Y, Zulu T, Edwards JA, Kim HY, Gunda R, Koole O, Surujdeen A, Gareta D, Munatsi D, Modise TH, Dreyer J, Nxumalo S, Smit TK, Ordering-Jespersen G, Mpofana IB, Khan K, Sikhosana ZEL, Moodley S, Shen YJ, Khoza T, Mhlongo N, Bucibo S, Nyamande K, Baisley KJ, Grant AD, Herbst K, Seeley J, Pillay D, Hanekom W, Ndung'u T, Siedner MJ, Tanser F, Wong EB. The met and unmet health needs for HIV, hypertension, and diabetes in rural KwaZulu-Natal, South Africa: analysis of a cross-sectional multimorbidity survey. Lancet Glob Health 2023; 11:e1372-e1382. [PMID: 37591585 PMCID: PMC10447220 DOI: 10.1016/s2214-109x(23)00239-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND The convergence of infectious diseases and non-communicable diseases in South Africa is challenging to health systems. In this analysis, we assessed the multimorbidity health needs of individuals and communities in rural KwaZulu-Natal and established a framework to quantify met and unmet health needs for individuals living with infectious and non-communicable diseases. METHODS We analysed data collected between May 25, 2018, and March 13, 2020, from participants of a large, community-based, cross-sectional multimorbidity survey (Vukuzazi) that offered community-based HIV, hypertension, and diabetes screening to all residents aged 15 years or older in a surveillance area in the uMkhanyakude district in KwaZulu-Natal, South Africa. Data from the Vukuzazi survey were linked with data from demographic and health surveillance surveys with a unique identifier common to both studies. Questionnaires were used to assess the diagnosed health conditions, treatment history, general health, and sociodemographic characteristics of an individual. For each condition (ie, HIV, hypertension, and diabetes), individuals were defined as having no health needs (absence of condition), met health needs (condition that is well controlled), or one or more unmet health needs (including diagnosis, engagement in care, or treatment optimisation). We analysed met and unmet health needs for individual and combined conditions and investigated their geospatial distribution. FINDINGS Of 18 041 participants who completed the survey (12 229 [67·8%] were female and 5812 [32·2%] were male), 9898 (54·9%) had at least one of the three chronic diseases measured. 4942 (49·9%) of these 9898 individuals had at least one unmet health need (1802 [18·2%] of 9898 needed treatment optimisation, 1282 [13·0%] needed engagement in care, and 1858 [18·8%] needed a diagnosis). Unmet health needs varied by disease; 1617 (93·1%) of 1737 people who screened positive for diabetes, 2681 (58·2%) of 4603 people who screened positive for hypertension, and 1321 (21·7%) of 6096 people who screened positive for HIV had unmet health needs. Geospatially, met health needs for HIV were widely distributed and unmet health needs for all three conditions had specific sites of concentration; all three conditions had an overlapping geographical pattern for the need for diagnosis. INTERPRETATION Although people living with HIV predominantly have a well controlled condition, there is a high burden of unmet health needs for people living with hypertension and diabetes. In South Africa, adapting current, widely available HIV care services to integrate non-communicable disease care is of high priority. FUNDING Fogarty International Center and the National Institutes of Health, the Bill & Melinda Gates Foundation, the South African Department of Science and Innovation, the South African Medical Research Council, the South African Population Research Infrastructure Network, and the Wellcome Trust. TRANSLATION For the isiZulu translation of the abstract see Supplementary Materials section.
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Affiliation(s)
- Urisha Singh
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Stephen Olivier
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Diego Cuadros
- Digital Epidemiology Laboratory, Digital Futures, University of Cincinnati, Cincinnati, OH, USA
| | - Alison Castle
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA; Harvard Medical School, Harvard University, Boston, MA, USA
| | - Yumna Moosa
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Thando Zulu
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Jonathan Alex Edwards
- International Institute for Rural Health, University of Lincoln, Lincoln, UK; Department of Biostatistics and Bioinformatics, Rollins School of Public Health and Department of Biomedical Informatics, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Hae-Young Kim
- Department of Population Health, New York University Grossman School of Medicine, New York University, New York, NY, USA
| | - Resign Gunda
- Africa Health Research Institute, KwaZulu-Natal, South Africa; School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Olivier Koole
- Africa Health Research Institute, KwaZulu-Natal, South Africa; London School of Hygiene and Tropical Medicine, London, UK
| | | | - Dickman Gareta
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Day Munatsi
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | | | - Jaco Dreyer
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | | | - Theresa K Smit
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | | | | | - Khadija Khan
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | | | - Sashen Moodley
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Yen-Ju Shen
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Thandeka Khoza
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Ngcebo Mhlongo
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Sanah Bucibo
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Kennedy Nyamande
- Department of Pulmonology and Critical Care, Inkosi Albert Luthuli Hospital, Durban, South Africa
| | - Kathy J Baisley
- Africa Health Research Institute, KwaZulu-Natal, South Africa; London School of Hygiene and Tropical Medicine, London, UK
| | - Alison D Grant
- Africa Health Research Institute, KwaZulu-Natal, South Africa; London School of Hygiene and Tropical Medicine, London, UK; School of Public Health, University of Witwatersrand, Johannesburg, South Africa
| | - Kobus Herbst
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Department of Science and Innovation, Medical Research Council, South African Population Research Infrastructure, Durban, South Africa
| | - Janet Seeley
- Africa Health Research Institute, KwaZulu-Natal, South Africa; School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa; London School of Hygiene and Tropical Medicine, London, UK
| | - Deenan Pillay
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Division of Infection and Immunity, University College London, London, UK
| | - Willem Hanekom
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Division of Infection and Immunity, University College London, London, UK
| | - Thumbi Ndung'u
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Ragon Institute, Massachusetts General Hospital, Boston, MA, USA; Harvard Medical School, Harvard University, Boston, MA, USA; Division of Infection and Immunity, University College London, London, UK; HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Durban, South Africa
| | - Mark J Siedner
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa; School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa; Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
| | - Frank Tanser
- Africa Health Research Institute, KwaZulu-Natal, South Africa; School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa; College of Health Sciences, and Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa; International Institute for Rural Health, University of Lincoln, Lincoln, UK; School of Data Science and Computational Thinking, Stellenbosch University, Stellenbosch, South Africa
| | - Emily B Wong
- Africa Health Research Institute, KwaZulu-Natal, South Africa; Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham, AL, USA.
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15
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Neyazi N, Mosadeghrad AM, Tajvar M, Safi N. Trend analysis of noncommunicable diseases and their risk factors in Afghanistan. Chronic Dis Transl Med 2023; 9:210-221. [PMID: 37711869 PMCID: PMC10497825 DOI: 10.1002/cdt3.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 03/09/2023] Open
Abstract
Background Afghanistan is suffering from 40-year chronic conflicts, displacement, and demolition of its infrastructure. Afghanistan mortality survey 2010 shows nearly 46% of all deaths in the country were attributed to noncommunicable diseases (NCDs). In this study, we aimed to understand the differences in mortality and premature death due to NCDs by sex and the trend for the next 8 years. Methods We applied trend analysis using the secondary data from the Institute for Health Metrics and Evaluation, Global Burden of Diseases 2019. The information on NCD mortality, NCD deaths attributed to its risk factors, NCD percent of total years lived with disability (YLDs) attribution to each risk factor extracted from this database from 2008 to 2019. We investigated the trend from 2008 to 2019 for the mentioned factors and then forecast their trends until 2030. Results Our study shows that Afghanistan has had an increasing death number due to NCDs from 2008 to 2019 (50% for both sexes) and this will reach nearly 54% by 2030. Currently, half of NCDs deaths are premature in Afghanistan. The mortality rate and prevalence of risk factors are higher among women. More than 70% of YLDs will be due to NCDs in Afghanistan till 2030. Five risk factors including high systolic blood pressure (28.3%), high body mass index (23.4%), high blood glucose (20.6%), high low-density lipoprotein cholesterol (16.3%), and smoking (12.3%) will have the highest contribution to NCDs death in 2030, respectively. Conclusions In general, our study indicates that without any specific intervention to address NCDs in Afghanistan, not only the Sustainable Development Goal target for NCDs will not be met, but an increase in almost all risk factors prevalence, as well as NCD mortality, will be seen in Afghanistan.
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Affiliation(s)
- Narges Neyazi
- International Campus, School of Public HealthTehran University of Medical SciencesTehranIran
- Department of Health System DevelopmentWorld Health OrganizationKabulAfghanistan
| | - Ali Mohammad Mosadeghrad
- Department of Health Management, Policy and Economics, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Maryam Tajvar
- Department of Health Management, Policy and Economics, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Najibullah Safi
- Department of Health System DevelopmentWorld Health OrganizationKabulAfghanistan
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16
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Keino BC, Carrel M. Spatial and temporal trends of overweight/obesity and tobacco use in East Africa: subnational insights into cardiovascular disease risk factors. Int J Health Geogr 2023; 22:20. [PMID: 37620831 PMCID: PMC10463724 DOI: 10.1186/s12942-023-00342-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 08/02/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Cardiovascular disease (CVD) is increasing in Sub-Saharan Africa (SSA). Overweight/obesity and tobacco use are modifiable CVD risk factors, however literature about the spatiotemporal dynamics of these risk factors in the region at subnational or local scales is lacking. We describe the spatiotemporal trends of overweight/obesity and tobacco use at subnational levels over a 13-year period (2003 to 2016) in five East African nations. METHODS Cross-sectional, nationally representative Demographic and Health Surveys (DHS) were used to explore the subnational spatiotemporal patterns of overweight/obesity and tobacco use in Burundi, Kenya, Rwanda, Tanzania, and Uganda, five East African Community (EAC) nations with unique cultural landscapes influencing CVD risk factors. Adaptive kernel density estimation and logistic regression were used to determine the spatial distribution and change over time of CVD risk factors on a subnational and subpopulation (rural/urban) scale. RESULTS Subnational analysis shows that regional and national level analysis masks important trends in CVD risk factor prevalence. Overweight/obesity and tobacco use trends were not similar: overweight/obesity prevalence increased across most nations included in the study and the inverse was true for tobacco use prevalence. Urban populations in each nation were more likely to be overweight/obese than rural populations, but the magnitude of difference varied widely between nations. Spatial analysis revealed that although the prevalence of overweight/obesity increased over time in both urban and rural populations, the rate of change differed between urban and rural areas. Rural populations were more likely to use tobacco than urban populations, though the likelihood of use varied substantially between nations. Additionally, spatial analysis showed that tobacco use was not evenly distributed across the landscape: tobacco use increased in and around major cities and urban centers but declined in rural areas. CONCLUSIONS We highlight the importance of de-homogenizing CVD risk factor research in SSA. Studies of national or regional prevalence trends mask important information about subpopulation and place-specific behavior and drivers of risk factor prevalence. Spatially explicit studies should be considered as a vital tool to understand local drivers of health, disease, and associated risk factor trends, especially in highly diverse yet low-resourced, marginalized, and often homogenized regions.
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Affiliation(s)
- Barbara Chebet Keino
- Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City, IA, USA.
| | - Margaret Carrel
- Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City, IA, USA
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17
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Chang AY, Rahman M, Talukder A, Shah H, Mridha MK, Hasan M, Sarker M, Geldsetzer P. Effectiveness of a community health worker-led low-sodium salt intervention to reduce blood pressure in rural Bangladesh: protocol for a cluster randomized controlled trial. Trials 2023; 24:480. [PMID: 37501102 PMCID: PMC10375753 DOI: 10.1186/s13063-023-07518-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND High blood pressure is a major public health problem in low- and middle-income countries. Low-sodium salt substitute (LSSS) is a promising population-level blood pressure-lowering intervention requiring minimal behavioral change. The optimal method of delivering LSSS to individuals, however, is currently unknown. Community health workers (CHWs) have successfully been used to implement health interventions in Bangladesh and may provide a venue for the dissemination of LSSS. METHODS We aim to conduct a cluster-randomized controlled trial involving 309 households in rural Bangladesh previously identified and characterized by the BRAC James P Grant School of Public Health, BRAC University (BRAC JPGSPH). These households will be randomly assigned to three arms: (1) control, i.e., no intervention; (2) information only, i.e., community health workers will provide basic information on high blood pressure, the health consequences of excessive salt consumption, and feedback to the participant on the likely quantity of salt s/he consumes (estimated using a questionnaire); (3) free LSSS arm: the same information as in arm 2 will be provided, but participants will receive 6 months of free low-sodium salt along with education on the benefits of LSSS. One male and one female adult (age ≥ 18 years) in each household will be invited to participate, the exclusion criteria being households with members known to have high serum potassium levels, are taking medications known to elevate potassium levels (e.g., ACE inhibitors, ARBs, potassium-sparing diuretics), are already taking potassium supplements, or those who have known kidney disease or abnormal serum creatinine at baseline. The primary endpoint will be blood pressure at 6 months post-intervention. DISCUSSION Recent large clinical trials of LSSS in China and India have shown not only blood pressure improvements, but also stroke, major cardiac event, and all-cause mortality reductions. Nevertheless, how to best translate this intervention to population-level effectiveness remains unclear. Our study would test whether a community health worker-based program could be effectively used to disseminate LSSS and achieve measurable blood pressure benefits. TRIAL REGISTRATION ClinicalTrials.gov NCT05425030. Registered on June 21, 2022.
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Affiliation(s)
- Andrew Y Chang
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, USA
- Center for Innovation in Global Health, Stanford University, Stanford, USA
- Stanford Cardiovascular Institute, Stanford University, Stanford, USA
| | - Mushfiqur Rahman
- BRAC James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
| | - Animesh Talukder
- BRAC James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
| | - Humyra Shah
- BRAC James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
| | - Malay Kanti Mridha
- BRAC James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
| | - Mehedi Hasan
- BRAC James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
| | - Malabika Sarker
- BRAC James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
- Heidelberg Institute of Global Health, Heidelberg University, Heidelberg, Germany
| | - Pascal Geldsetzer
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, USA.
- Division of Primary Care and Population Health, Department of Medicine, Stanford University School of Medicine, Stanford, USA.
- The Chan Zuckerberg Biohub, San Francisco, USA.
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18
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Khosravi A, Bassetti E, Yuen-Esco K, Sy NY, Kane R, Sweet L, Zehner E, Pries AM. Nutrient Profiles of Commercially Produced Complementary Foods Available in Burkina Faso, Cameroon, Ghana, Nigeria and Senegal. Nutrients 2023; 15:nu15102279. [PMID: 37242162 DOI: 10.3390/nu15102279] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
The nutritional quality of commercially produced complementary food (CPCF) varies widely, with CPCF in high-income settings often containing excessive levels of sugar and sodium. Little is known about the nutritional quality of CPCF available in the West Africa region, despite their potential to improve the nutrition of infants and young children (IYC). This study evaluated the nutritional quality of CPCF available in five West African countries using the WHO Europe nutrient profiling model (NPM) and assessed their suitability for IYC based on label information. The proportion that would necessitate a "high sugar" warning was also determined, and the micronutrient (iron, calcium, and zinc) content was assessed against IYC-recommended nutrient intakes. Of the 666 products assessed, only 15.9% were classified as nutritionally suitable for promotion for IYC. The presence of added sugar and excessive sodium levels were the most common reasons for a product to fail the nutrient profiling assessment. Dry/instant cereals contributed the highest percentage of recommended nutrient intake (RNI) per serving. This highlights the need for policies to improve the nutritional quality of CPCF in West Africa, including labeling standards and the use of front-of-pack warning signs to promote product reformulation and clearly communicate nutritional quality to caregivers.
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Affiliation(s)
| | | | | | | | | | - Lara Sweet
- JB Consultancy, Johannesburg 2198, South Africa
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19
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Ong J, Alswat K, Hamid S, El-Kassas M. Nonalcoholic Fatty Liver Disease in Asia, Africa, and Middle East Region. Clin Liver Dis 2023; 27:287-299. [PMID: 37024208 DOI: 10.1016/j.cld.2023.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease worldwide. The global prevalence of the disease varies according to the geographical region. Despite having distinct models for the western patterns of NAFLD, Africa, Asia, and the Middle East regions exhibited varying prevalence rates of NAFLD. The disease burden is anticipated to significantly increase in these areas. Furthermore, with an increase in NAFLD risk factors in these regions, the disease burden is expected to rise even more. Policies at the regional and international levels are required to address such growing burden of NAFLD consequences.
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Affiliation(s)
- Janus Ong
- College of Medicine, University of the Philippines, Manila, Philippines
| | - Khalid Alswat
- Department of Medicine, Liver Disease Research Centre, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Saeed Hamid
- Department of Medicine, Aga Khan University, Karachi, Pakistan
| | - Mohamed El-Kassas
- Endemic Medicine Department, Faculty of Medicine, Helwan University, Ain Helwan, Cairo 11795, Egypt.
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20
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Gizaw M, Parkin DM, Stöter O, Korir A, Kamate B, Liu B, Bojang L, N'Da G, Manraj SS, Bukirwa P, Chokunonga E, Chingonzoh T, Peko JF, Finesse A, Somdyala N, Ladipo A, Kantelhardt EJ. Trends in the incidence of ovarian cancer in sub-Saharan Africa. Int J Cancer 2023; 152:1328-1336. [PMID: 36274630 DOI: 10.1002/ijc.34335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/17/2022] [Accepted: 09/29/2022] [Indexed: 02/03/2023]
Abstract
Ovarian cancer (OC) is one of the commonest cancers of women in sub-Saharan Africa (SSA), although to date no data have been available on time trends in incidence to better understand the disease pattern in the region. We estimate time trends by histological subtype from 12 population-based cancer registries in 11 countries: Kenya (Nairobi), Mauritius, Seychelles, Uganda (Kampala), Congo (Brazzaville), Zimbabwe (Bulawayo and Harare), Cote d'Ivoire (Abidjan), The Gambia, Mali (Bamako), Nigeria (Ibadan) and South Africa (Eastern Cape). The selected registries were those that could provide consistent estimates of the incidence of ovarian cancer and with quality assessment for periods of 10 or more years. A total of 5423 cases of OC were included. Incidence rates have been increasing in all registries except Brazzaville, Congo, where a nonsignificant decline of 1% per year was seen. Statistically significant average annual increases were seen in Mauritius (2.5%), Bamako (5.3%), Ibadan (3.9%) and Eastern Cape (8%). Epithelial ovarian cancer was responsible for the increases observed in all registries. Statistically significant average annual percentage changes (AAPC) for epithelial OC were present in Bamako (AAPC = 5.9%), Ibadan (AAPC = 4.7%) and Eastern Cape (AAPC = 11.0%). Creating awareness among professionals of the growing importance of the disease is surely an important step to improving availability of, and access to, diagnosis and treatment of OC in SSA. Support must be given to the cancer registries to improve the availability of good-quality data on this important cancer.
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Affiliation(s)
- Muluken Gizaw
- Department of Preventive Medicine, School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia
- Institute for Medical Epidemiology, Biometrics and Informatics, Martin Luther University Halle Wittenberg, Global Health Working Group, Halle, Germany
| | - Donald Maxwell Parkin
- Nuffield Department of Population Health, Oxford University, Oxford
- International Agency for Research on Cancer, Cancer Surveillance Unit, Lyon, France
| | - Ole Stöter
- Institute for Medical Epidemiology, Biometrics and Informatics, Martin Luther University Halle Wittenberg, Global Health Working Group, Halle, Germany
- Department of Gynaecology, Martin-Luther-Universitat Halle-Wittenberg, Halle, Germany
| | - Anne Korir
- Nairobi Cancer Registry, Kenya Medical Research Institute, Nairobi, Kenya
| | | | - Biying Liu
- African Cancer Registry Network, Oxford, UK
| | - Lamin Bojang
- Gambia National Cancer Registry Medical Research Council Unit, Fajara, Gambia
| | - Guy N'Da
- Abidjan Cancer Registry, Abidjan, Côte d'Ivoire
| | - Shyam S Manraj
- Mauritius National Cancer Registry, Port Louis, Mauritius
| | - Phiona Bukirwa
- Kampala Cancer Registry and Department of Pathology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | | | | | | | - Anne Finesse
- Seychelles National Cancer Registry, Victoria, Seychelles
| | - Nontuthuzelo Somdyala
- Burden of Disease Research Unit, South African Medical Research Council, Eastern Cape Cancer Registry, Tygerberg, South Africa
| | - Akinade Ladipo
- Ibadan Cancer Registry, Department of Pathology University College Hospital, Ibadan, Nigeria
| | - Eva Johanna Kantelhardt
- Institute for Medical Epidemiology, Biometrics and Informatics, Martin Luther University Halle Wittenberg, Global Health Working Group, Halle, Germany
- Department of Gynaecology, Martin-Luther-Universitat Halle-Wittenberg, Halle, Germany
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21
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Singh U, Olivier S, Cuadros D, Castle A, Moosa Y, Edwards JA, Kim HY, Siedner MJ, Tanser F, Wong EB. Quantifying met and unmet health needs for HIV, hypertension and diabetes in rural KwaZulu-Natal, South Africa. RESEARCH SQUARE 2023:rs.3.rs-2702048. [PMID: 36993494 PMCID: PMC10055615 DOI: 10.21203/rs.3.rs-2702048/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The convergence of infectious and non-communicable diseases (NCDs) in South Africa poses a challenge to health systems. Here we establish a framework to quantify met and unmet health needs for individuals living with infectious and NCDs. In this study, we screened adult residents >15 years of age within the uMkhanyakude district in KwaZulu- Natal, South Africa for HIV, hypertension (HPTN) and diabetes mellitus (DM). For each condition, individuals were defined as having no unmet health needs (absence of condition), met health need (condition that is well controlled), or one or more unmet health needs (including diagnosis, engagement in care, or treatment optimization). We analyzed met and unmet health needs for individual and combined conditions and investigated their geospatial distribution. We found that of 18,041 participants, 9,898 (55%) had at least one chronic condition. 4,942 (50%) of these individuals had at least one unmet health need (18% needed treatment optimization, 13% needed engagement in care, and 19% needed diagnosis). Unmet health needs varied by disease: 93% of people with DM, 58% of people with HPTN and 21% of people with HIV had unmet health needs. Geospatially, met health needs for HIV were widely distributed, unmet health needs had specific sites of concentration whilst the need for diagnosis for all three conditions was co-located. Whilst people living with HIV are predominantly well-controlled, there is a high burden of unmet health needs for people living with HPTN and DM. Adaptation of HIV models of care to integrate HIV and NCD services is of high priority.
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Affiliation(s)
- Urisha Singh
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- Nelson R Mandela School of Medicine; University of KwaZulu-Natal, Durban, SA
| | - Stephen Olivier
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Diego Cuadros
- Digital Epidemiology Laboratory, Digital Futures, University of Cincinnati, USA
| | - Alison Castle
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Yumna Moosa
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Jonathan Alex Edwards
- International Institute for Rural Health, University of Lincoln, Lincolnshire, UK
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA
- Department of Biomedical Informatics, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Hae-Young Kim
- Department of Population Health, New York University Grossman School of Medicine, NY, USA
| | - Mark J Siedner
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- Nelson R Mandela School of Medicine; University of KwaZulu-Natal, Durban, SA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
- School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Frank Tanser
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- International Institute for Rural Health, University of Lincoln, Lincolnshire, UK
- School of Nursing and Public Health, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, South Africa
| | - Emily B Wong
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- Division of Infectious Diseases, University of Alabama Birmingham, Birmingham, AL, USA
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22
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Peer N, Nguyen KA, Hill J, Sumner AE, Cikomola JC, Nachega JB, Kengne AP. Prevalence and influences of diabetes and prediabetes among adults living with HIV in Africa: a systematic review and meta-analysis. J Int AIDS Soc 2023; 26:e26059. [PMID: 36924213 PMCID: PMC10018386 DOI: 10.1002/jia2.26059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 01/11/2023] [Indexed: 03/18/2023] Open
Abstract
INTRODUCTION In people living with human immunodeficiency virus (PLHIV), traditional cardiovascular risk factors, exposure to HIV per se and antiretroviral therapy (ART) are assumed to contribute to cardiometabolic diseases. Nevertheless, controversy exists on the relationship of HIV and ART with diabetes. To clarify the relationship between HIV and type 2 diabetes, this review determined, in PLHIV in Africa, diabetes and prediabetes prevalence, and the extent to which their relationship was modified by socio-demographic characteristics, body mass index (BMI), diagnostic definitions used for diabetes and prediabetes, and HIV-related characteristics, including CD4 count, and use and duration of ART. METHODS For this systematic review and meta-analysis (PROSPERO registration CRD42021231547), a comprehensive search of major databases (PubMed-MEDLINE, Scopus, Web of Science, Google Scholar and WHO Global Health Library) was conducted. Original research articles published between 2000 and 2021 in English and French were included, irrespective of study design, data collection techniques and diagnostic definitions used. Observational studies comprising at least 30 PLHIV and reporting on diabetes and/or prediabetes prevalence in Africa were included. Study-specific estimates were pooled using random effects models to generate the overall prevalence for each diagnostic definition. Data analyses used R statistical software and "meta" package. RESULTS Of the 2614 records initially screened, 366 full-text articles were assessed for eligibility and 61 were selected. In the systematic review, all studies were cross-sectional by design and clinic-based, except for five population-based studies. Across studies included in the meta-analysis, the proportion of men was 16-84%. Mean/median age was 30-62 years. Among 86,412 and 7976 participants, diabetes and prediabetes prevalence rates were 5.1% (95% CI: 4.3-5.9) and 15.1% (9.7-21.5). Self-reported diabetes (3.5%) was lower than when combined with biochemical assessments (6.2%; 7.2%). DISCUSSION While not statistically significant, diabetes and prediabetes were higher with greater BMI, in older participants, urban residents and more recent publications. Diabetes and prediabetes were not significantly different by HIV-related factors, including CD4 count and ART. CONCLUSIONS Although HIV-related factors did not modify prevalence, the diabetes burden in African PLHIV was considerable with suboptimal detection, and likely influenced by traditional risk factors. Furthermore, high prediabetes prevalence foreshadows substantial increases in future diabetes in African PLHIV.
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Affiliation(s)
- Nasheeta Peer
- Non-communicable Diseases Research Unit, South African Medical Research Council, Durban and Cape Town, South Africa.,Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Kim Anh Nguyen
- Non-communicable Diseases Research Unit, South African Medical Research Council, Durban and Cape Town, South Africa
| | - Jillian Hill
- Non-communicable Diseases Research Unit, South African Medical Research Council, Durban and Cape Town, South Africa
| | - Anne E Sumner
- Section on Ethnicity and Health, Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institute of Health, Bethesda, Maryland, USA.,National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, Maryland, USA
| | - Justin Cirhuza Cikomola
- Faculty of Medicine, Université Catholique de Bukavu, Bukavu, the Democratic Republic of the Congo
| | - Jean Bisimwa Nachega
- Division of Infectious Diseases, Department of Medicine, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, South Africa.,Department of Epidemiology, Infectious Diseases, and Microbiology, and Center for Global Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.,Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Andre-Pascal Kengne
- Non-communicable Diseases Research Unit, South African Medical Research Council, Durban and Cape Town, South Africa.,Department of Medicine, University of Cape Town, Cape Town, South Africa
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23
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Amugsi DA, Dimbuene ZT. Effects of social determinants of health on obesity among urban women of reproductive age. PLOS GLOBAL PUBLIC HEALTH 2023; 3:e0001442. [PMID: 36963076 PMCID: PMC10022252 DOI: 10.1371/journal.pgph.0001442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/23/2022] [Indexed: 06/18/2023]
Abstract
Obesity is a major global public health problem. It is spreading very fast in low- and middle-income countries and has reached world record levels in some of them. In Ghana, it has increased by over 65% among urban women in the past three decades. This study investigated the effects of social determinants of health on obesity among women in urban Ghana. The study analyzed the Ghana demographic and health survey data. These are nationally representative data collective every five years across low- and middle-income countries. A total of 1,204 urban women were included in the analysis. Body mass index was the outcome variable of interest. We used logistic regression to model the effects of the various social determinants of health on obesity. The results showed that 40% (95% confidence interval (CI) = 25.4, 57.0) and 36.7% (95% CI = 25.6, 49.3) of women who had higher education and those whose partners had higher education suffered from obesity, respectively. Women living in rich households had a five times higher prevalence of obesity than those in poor households (28.8% vs 5.7%). Further, 33.4% (95% CI = 18.5, 19.3) of women who occupied managerial positions were obese. The results from the multivariable logistic regression analysis suggested that compared to women in poor households, those in rich households were 3.4 times (95% CI = 1.31, 8.97) more likely to suffer from obesity. Women whose main occupation was agriculture were 81% (aOR = 0.19; 95% CI = 0.034, 0.99) less likely to suffer from obesity compared to those with no occupation. The results suggest that the various social determinants of health (SDH) included in the analysis significantly influence obesity outcomes. Women and partner education levels, occupying a managerial position, and living in rich households increase the risk of obesity. Interventions to address the rising obesity in urban Ghana should have specific packages targeted at these sub-groups.
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Affiliation(s)
- Dickson A. Amugsi
- Nutrition and Food Systems Unit, African Population and Health Research Center, Nairobi, Kenya
| | - Zacharie T. Dimbuene
- Department of Population Sciences and Development, University of Kinshasa, Kinshasa, The Democratic Republic of the Congo
- Microdata Access Division, Statistics Canada, Ottawa, Canada
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24
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Zhang Y, Ding Y, Zhu N, Mi M, Lu Y, Zheng J, Weng S, Yuan Y. Emerging patterns and trends in global cancer burden attributable to metabolic factors, based on the Global Burden of Disease Study 2019. Front Oncol 2023; 13:1032749. [PMID: 36741020 PMCID: PMC9893408 DOI: 10.3389/fonc.2023.1032749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 01/05/2023] [Indexed: 01/21/2023] Open
Abstract
Background The exponential growth of the cancer burden attributable to metabolic factors deserves global attention. We investigated the trends of cancer mortality attributable to metabolic factors in 204 countries and regions between 1990 and 2019. Methods We extracted data from the Global Burden of Disease Study (GBD) 2019 and assessed the mortality, age-standardized death rate (ASDR), and population attributable fractions (PAFs) of cancers attributable to metabolic factors. Average annual percentage changes (AAPCs) were calculated to assess the changes in the ASDR. The cancer mortality burden was evaluated according to geographic location, SDI quintiles, age, sex, and changes over time. Results Cancer attributable to metabolic factors contributed 865,440 (95% UI, 447,970-140,590) deaths in 2019, a 167.45% increase over 1990. In the past 30 years, the increase in the number of deaths and ASDR in lower SDI regions have been significantly higher than in higher SDI regions (from high to low SDIs: the changes in death numbers were 108.72%, 135.7%, 288.26%, 375.34%, and 288.26%, and the AAPCs were 0.42%, 0.58%, 1.51%, 2.36%, and 1.96%). Equatorial Guinea (AAPC= 5.71%), Cabo Verde (AAPC=4.54%), and Lesotho (AAPC=4.42%) had the largest increase in ASDR. Large differences were observed in the ASDRs by sex across different SDIs, and the male-to-female ratios of ASDR were 1.42, 1.50, 1.32, 0.93, and 0.86 in 2019. The core population of death in higher SDI regions is the age group of 70 years and above, and the lower SDI regions are concentrated in the age group of 50-69 years. The proportion of premature deaths in lower SDI regions is significantly higher than that in higher SDI regions (from high to low SDIs: 2%, 4%, 7%, 7%, and 9%). Gastrointestinal cancers were the core burden, accounting for 50.11% of cancer deaths attributable to metabolic factors, among which the top three cancers were tracheal, bronchus, and lung cancer, followed by colon and rectum cancer and breast cancer. Conclusions The cancer mortality burden attributable to metabolic factors is shifting from higher SDI regions to lower SDI regions. Sex differences show regional heterogeneity, with men having a significantly higher burden than women in higher SDI regions but the opposite is observed in lower SDI regions. Lower SDI regions have a heavier premature death burden. Gastrointestinal cancers are the core of the burden of cancer attributable to metabolic factors.
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Affiliation(s)
- Yan Zhang
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yuwei Ding
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, Zhejiang, China
| | - Ning Zhu
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, Zhejiang, China
| | - Mi Mi
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, Zhejiang, China
| | - Yier Lu
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, Zhejiang, China
| | - Jia Zheng
- Department of Medical Geriatrics, School of Medicine, The Second Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang, China
| | - Shanshan Weng
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,*Correspondence: Ying Yuan, ; Shanshan Weng,
| | - Ying Yuan
- Department of Medical Oncology (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Zhejiang Province, China), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, Zhejiang, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China,*Correspondence: Ying Yuan, ; Shanshan Weng,
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25
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Catharina de Beer J, Snyman J, Ker J, Miller-Janson H, Stander M. Budget Impact Analysis of Empagliflozin in the Treatment of Patients With Type 2 Diabetes With Established Cardiovascular Disease in South Africa. Value Health Reg Issues 2023; 33:91-98. [PMID: 36327769 DOI: 10.1016/j.vhri.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 07/08/2022] [Accepted: 08/30/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVES This study aimed to estimate the budget impact and affordability of empagliflozin added to usual care compared with usual care alone, in a diabetic population with established cardiovascular disease, from a private healthcare payer perspective in South Africa. METHODS A budget impact model was adapted and localized. Epidemiological data were obtained from the South African Council for Medical Schemes. Clinical event rates were sourced from the EMPA-REG OUTCOME trial and drug costs from list prices. Clinical event costs were derived from a claims data analysis of the South African private healthcare sector and microcosting. Scenario analyses were performed on select inputs. The modeled outcomes included annual budget impact of empagliflozin, the incremental cost per life per month, cardiovascular deaths averted, and incremental cost per life saved, over 3 years. RESULTS A total of 9 503 patients were eligible for empagliflozin (year 1), 12 670 (year 2), and 16 947 (year 3). The incremental cost was $1 272 297, $1 764 705, and $2 455 235, for years 1 to 3, respectively. The incremental cost per beneficiary per month was calculated as $0.012 (year 1), $0.016 (year 2), and $0.023 (year 3). The model estimated a 38.6% reduction in cardiovascular deaths, 305 lives saved, and an incremental cost per life saved of $17 999. CONCLUSIONS Adding empagliflozin to usual care has a marginal budget implication and is highly affordable for private healthcare payers, with an acceptable incremental cost based on clinical outcomes.
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Affiliation(s)
| | | | - James Ker
- University of Pretoria, South Africa
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Hernández-Mendoza H, Álvarez-Loredo HE, Romero-Guzmán ET, Gaytán-Hernández D, Chang-Rueda C, Martínez-Navarro I, Juárez-Flores BI, Rios-Lugo MJ. Relationship Between Serum Levels of Arsenic, Cadmium, and Mercury and Body Mass Index and Fasting Plasma Glucose in a Mexican Adult Population. Biol Trace Elem Res 2022; 200:4916-4923. [PMID: 35098445 PMCID: PMC8801291 DOI: 10.1007/s12011-021-03081-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/20/2021] [Indexed: 01/22/2023]
Abstract
In Mexico, few studies have analyzed the associations between toxic elements and metabolic diseases. In the present study, we analyzed the associations between serum arsenic (As), cadmium (Cd), and mercury (Hg) levels and body mass index (BMI) and fasting plasma glucose (FPG) in a Mexican adult population. Anthropometric data corresponding to 86 Mexican healthy adults (59 females and 27 men) were analyzed. FPG was analyzed by an enzymatic colorimetric method, and serum As, Cd, and Hg levels were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). The data show that the median serum As, Cd, and Hg levels were relatively higher in females (As = 1.78 ng mL-1, Cd = 1.00 ng mL-1, Hg = 0.96 ng mL-1) than those in males (As = 1.22 ng mL-1, Cd = 0.91 ng mL-1, Hg = 0.95 ng mL-1). However, these differences were not statistically significant (p ≥ 0.097). We also found that the median level of As significantly increased with an increase in the body weight categories (normal weight = 1.08; overweight = 1.50; obesity = 2.75; p < 0.001). In addition, a positive association between serum As levels and FPG before and after adjustment for BMI was demonstrated (RhoUnadjusted = 0.012; (RhoAdjusted = 0.243, p = 0.032). Serum As levels are positively associated with BMI and FPG in the adult population of Mexico. Nevertheless, these results need to be replicated and confirmed with a larger sample size.
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Affiliation(s)
- Héctor Hernández-Mendoza
- Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, Altair 200, C.P: 78377, San Luis Potosí, S.L.P., México.
- Universidad del Centro de México, Capitán Caldera 75, C.P: 78250, San Luis Potosí, S.L.P., México.
| | - Héctor Edmundo Álvarez-Loredo
- Centro de Investigación en Ciencias de Salud y Biomedicina, Sección de Medicina Molecular y Traslacional, Universidad Autónoma de San Luis Potosí, Avda Sierra Leona 550, C.P: 78210, San Luis Potosí, S.L.P., México
| | - Elizabeth Teresita Romero-Guzmán
- Departamento de Química, Gerencia de Ciencias Básicas, Dirección de Investigación Científica, Carretera México-Toluca S/N, C.P: 52750, La Marquesa Ocoyoacác, México
| | - Darío Gaytán-Hernández
- Facultad de Enfermería Y Nutrición, Unidad de Posgrado, Universidad Autónoma de San Luis Potosí, Avda. Niño Artillero 130, C.P: 78210, San Luis Potosí, S.L.P., México
| | - Consuelo Chang-Rueda
- Facultad de Ciencias Químicas, Universidad Autónoma de Chiapas, Campus IV Carretera a Puerto Madero Km 1.5, C.P: 30580, Tapachula, Chiapas, México
| | - Israel Martínez-Navarro
- Centro de Investigación en Ciencias de Salud y Biomedicina, Sección de Medicina Molecular y Traslacional, Universidad Autónoma de San Luis Potosí, Avda Sierra Leona 550, C.P: 78210, San Luis Potosí, S.L.P., México
| | - Bertha Irene Juárez-Flores
- Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, Altair 200, C.P: 78377, San Luis Potosí, S.L.P., México
| | - María Judith Rios-Lugo
- Centro de Investigación en Ciencias de Salud y Biomedicina, Sección de Medicina Molecular y Traslacional, Universidad Autónoma de San Luis Potosí, Avda Sierra Leona 550, C.P: 78210, San Luis Potosí, S.L.P., México.
- Facultad de Enfermería Y Nutrición, Unidad de Posgrado, Universidad Autónoma de San Luis Potosí, Avda. Niño Artillero 130, C.P: 78210, San Luis Potosí, S.L.P., México.
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Ayoola A, Ssekubugu R, Grabowski MK, Ssekasanvu J, Kigozi G, Mustapha A, Reynolds SJ, Ekstrom AM, Nordenstedt H, Enriquez R, Gray RH, Wawer MJ, Kagaayi J, Post WS, Chang LW. Overweight and obesity in south central Uganda: A population-based study. PLOS GLOBAL PUBLIC HEALTH 2022; 2:e0001051. [PMID: 36962650 PMCID: PMC10021145 DOI: 10.1371/journal.pgph.0001051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 10/03/2022] [Indexed: 11/22/2022]
Abstract
Obesity is a rapidly growing global health challenge, but there are few population-level studies from non-urban settings in sub-Saharan Africa. We evaluated the prevalence of overweight (body mass index (BMI)>25 kg/m2), obesity (BMI>30 kg/m2), and associated factors using data from May 2018 to November 2020 from the Rakai Community Cohort Study, a population-based cohort of residents aged 15 to 49 living in forty-one fishing, trading, and agrarian communities in South Central Uganda. Modified Poisson regression was used to estimate adjusted prevalence risk ratios (PRR) and 95% confidence intervals (CI) in 18,079 participants. The overall mean BMI was 22.9 kg/m2. Mean BMI was 21.5 kg/m2 and 24.1 kg/m2 for males and females, respectively. The prevalence of overweight and obesity were 22.8% and 6.2%, respectively. Females had a higher probability of overweight/obesity (PRR: 4.11, CI: 2.98-5.68) than males. For female participants, increasing age, higher socioeconomic status, residing in a trading or fishing community (PRR: 1.25, CI 1.16-1.35 and PRR: 1.17, CI 1.10-1.25, respectively), being currently or previously married (PRR: 1.22, CI 1.07-1.40 and PRR: 1.16, CI 1.01-1.34, respectively), working in a bar/restaurant (PRR: 1.29, CI 1.17-1.45), trading/shopkeeping (PRR: 1.38, CI 1.29-1.48), and reporting alcohol use in the last year (PRR: 1.21, CI 1.10-1.33) were risk factors for overweight/obese. For male participants, increasing age, higher socioeconomic status, being currently married (PRR: 1.94, CI 1.50-2.50), residing in a fishing community (PRR: 1.68, CI 1.40-2.02), working in a bar/restaurant (PRR: 2.20, CI 1.10-4.40), trading/shopkeeping (PRR: 1.75, CI 1.45-2.11), or fishing (PRR: 1.32, CI 1.03-1.69) increased the probability of overweight/obesity. Non-Muslim participants, male smokers, and HIV-positive females had a lower probability of overweight/obese. The prevalence of overweight/obesity in non-urban Ugandans is substantial. Targeted interventions to high-risk subgroups in this population are needed.
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Affiliation(s)
- Adeoluwa Ayoola
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
- Stanford University School of Medicine, Stanford, California, United States of America
| | - Robert Ssekubugu
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology and Biostatistics, School of Public Health, Makerere University, Kampala, Uganda
| | - Mary Kathryn Grabowski
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Joseph Ssekasanvu
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Godfrey Kigozi
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology and Biostatistics, School of Public Health, Makerere University, Kampala, Uganda
| | - Aishat Mustapha
- Department of Internal Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Steven J. Reynolds
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
- Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- Department of Infectious Diseases, South Central Hospital, Stockholm, Sweden
| | - Anna Mia Ekstrom
- Department of Infectious Diseases, South Central Hospital, Stockholm, Sweden
- Department of Global Public Health, Karolinska Institute, Stockholm, Sweden
- Department of Medicine and Infectious Diseases, Danderyd University Hospital, Stockholm, Sweden
| | - Helena Nordenstedt
- Department of Global Public Health, Karolinska Institute, Stockholm, Sweden
- Department of Medicine and Infectious Diseases, Danderyd University Hospital, Stockholm, Sweden
| | - Rocio Enriquez
- Department of Global Public Health, Karolinska Institute, Stockholm, Sweden
| | - Ronald H. Gray
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Maria J. Wawer
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology and Biostatistics, School of Public Health, Makerere University, Kampala, Uganda
| | - Joseph Kagaayi
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology and Biostatistics, School of Public Health, Makerere University, Kampala, Uganda
| | - Wendy S. Post
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
- Division of Cardiology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Larry W. Chang
- Rakai Health Sciences Program, Kalisizo, Uganda
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
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Sarpong E, Acheampong DO, Fordjour GNR, Anyanful A, Aninagyei E, Tuoyire DA, Blackhurst D, Kyei GB, Ekor M, Thomford NE. Zero malaria: a mirage or reality for populations of sub-Saharan Africa in health transition. Malar J 2022; 21:314. [PMID: 36333802 PMCID: PMC9636766 DOI: 10.1186/s12936-022-04340-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
The global burden of malaria continues to be a significant public health concern. Despite advances made in therapeutics for malaria, there continues to be high morbidity and mortality associated with this infectious disease. Sub-Saharan Africa continues to be the most affected by the disease, but unfortunately the region is burdened with indigent health systems. With the recent increase in lifestyle diseases, the region is currently in a health transition, complicating the situation by posing a double challenge to the already ailing health sector. In answer to the continuous challenge of malaria, the African Union has started a "zero malaria starts with me” campaign that seeks to personalize malaria prevention and bring it down to the grass-root level. This review discusses the contribution of sub-Saharan Africa, whose population is in a health transition, to malaria elimination. In addition, the review explores the challenges that health systems in these countries face, that may hinder the attainment of a zero-malaria goal.
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Spearman CW, Dusheiko G, Jonas E, Abdo A, Afihene M, Cunha L, Desalegn H, Kassianides C, Katsidzira L, Kramvis A, Lam P, Lesi OA, Micah EA, Musabeyezu E, Ndow G, Nnabuchi CV, Ocama P, Okeke E, Rwegasha J, Shewaye AB, Some FF, Tzeuton C, Sonderup MW. Hepatocellular carcinoma: measures to improve the outlook in sub-Saharan Africa. Lancet Gastroenterol Hepatol 2022; 7:1036-1048. [PMID: 35810766 DOI: 10.1016/s2468-1253(22)00041-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 01/26/2022] [Accepted: 02/02/2022] [Indexed: 02/08/2023]
Abstract
Hepatocellular carcinoma is a leading public health concern in sub-Saharan Africa, and it is most prevalent in young adults (median 45 years [IQR 35-57]). Overall, outcomes are poor, with a median survival of 2·5 months after presentation. Major risk factors for hepatocellular carcinoma are hepatitis B virus (HBV), hepatitis C virus, aflatoxin B1 exposure, and alcohol consumption, with metabolic dysfunction-associated fatty liver disease slowly emerging as a risk factor over the past few years. Crucially, these risk factors are preventable and manageable with effective implementation of the HBV birth-dose vaccination, treatment of chronic viral hepatitis, provision of harm reduction services, and by decreasing aflatoxin B1 exposure and harmful alcohol consumption. Primary prevention is central to the management of hepatocellular carcinoma, especially in poorly resourced environments. Effective screening and surveillance programmes with recall policies need to be implemented, because detection and curative management of hepatocellular carcinoma is possible if it is detected at an early stage, even in countries with minimal resources, with appropriate upskilling of medical personnel. The establishment of centres of excellence with advanced diagnostic and therapeutic capabilities within countries should improve hepatocellular carcinoma outcomes and assist in driving the implementation of much needed systematic data systems focused on hepatocellular carcinoma to establish the accurate burden in sub-Saharan Africa. Such data would support the public health importance of hepatocellular carcinoma and provide a strong basis for advocacy, programme development, resource allocation, and monitoring of progress in reducing mortality.
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Affiliation(s)
- C Wendy Spearman
- Division of Hepatology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
| | - Geoffrey Dusheiko
- University College London Medical School, London, UK; Kings College Hospital, London, UK
| | - Eduard Jonas
- Surgical Gastroenterology Unit, Division of General Surgery, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Abdelmounem Abdo
- National Centre for Gastrointestinal and Liver Disease, Ibn Sina Hospital, Alamarat, Khartoum, Sudan
| | - Mary Afihene
- Department of Medicine, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Lina Cunha
- Gastroenterology Unit, Maputo Private Hospital, Maputo, Mozambique
| | - Hailemichael Desalegn
- Department of Internal Medicine, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Chris Kassianides
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Leolin Katsidzira
- Internal Medicine Unit, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Anna Kramvis
- Hepatitis Virus Diversity Research Unit, Department of Internal Medicine, School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Olufunmilayo A Lesi
- Gastroenterology and Hepatology Unit, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Eileen A Micah
- Department of Medicine, Komfo Anokye Teaching Hospital, Kumasi, Ghana
| | | | - Gibril Ndow
- Disease Control and Elimination Theme, MRC Unit The Gambia at the London School of Tropical Medicine, London, UK; Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Chidi V Nnabuchi
- Asokoro District Hospital, Nile University Teaching Hospital, Abuja, Nigeria
| | - Ponsiano Ocama
- School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Edith Okeke
- Gastroenterology and Hepatology Unit, Department of Internal Medicine, College of Health Sciences, University of Jos, Jos University Teaching Hospital, Jos, Nigeria
| | - John Rwegasha
- Gastroenterology Training Centre, Department of Internal Medicine, Muhimbili National Hospital, Dar Es Salaam, Tanzania
| | - Abate B Shewaye
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Fatuma F Some
- Department of Medicine, School of Medicine, College of Health Sciences, Moi University, Eldoret, Kenya
| | - Christian Tzeuton
- Faculty of Medicine and Pharmaceutical Sciences of Douala, University of Douala, Douala, Cameroon
| | - Mark W Sonderup
- Division of Hepatology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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Lopes T, Zemlin AE, Hill J, Mchiza ZJ, Peer N, Erasmus RT, Kengne AP. Consumption of Plant Foods and Its Association with Cardiovascular Disease Risk Profile in South Africans at High-Risk of Type 2 Diabetes Mellitus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:13264. [PMID: 36293842 PMCID: PMC9603168 DOI: 10.3390/ijerph192013264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/03/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
We assessed the distribution and association of cardiovascular disease (CVD) risk factors by plant foods consumption in individuals at high-risk for type 2 diabetes mellitus. This cross-sectional study utilized baseline data of 693 participants in the South African Diabetes Prevention Programme. Participants underwent a physical examination, biochemical analysis, and dietary assessment using a single non-quantified 24-h recall. Group comparisons were conducted to explore the distribution and associations of common CVD risk factors by plant foods consumption. The mean age of the participants was 51 years, with 81% being females. Consumers of yellow-coloured vitamin A-rich vegetables and tubers and maize had significantly lower systolic blood pressure, fasting insulin, low-density lipoprotein cholesterol, triglycerides, and fibrinogen levels. Cereals consumption increased the likelihood of obesity (OR = 1.72 95% CI [1.09, 2.70] p = 0.019) while the consumption of white roots and tubers decreased the likelihood of obesity (AOR = 0.64 95% CI [0.41, 1.00] p = 0.048). This study reported the consumption of some healthy plant foods with lower levels of, and decreased risk for, some CVD risk factors. A further in-depth investigation is needed to understand these associations.
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Affiliation(s)
- Tatum Lopes
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town 7505, South Africa
- Division of Chemical Pathology, Department of Pathology, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town 7505, South Africa
| | - Annalise E. Zemlin
- Division of Chemical Pathology, Department of Pathology, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town 7505, South Africa
- National Health Laboratory Service (NHLS), Tygerberg Hospital, Cape Town 7505, South Africa
| | - Jillian Hill
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town 7505, South Africa
| | - Zandile J. Mchiza
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town 7505, South Africa
| | - Nasheeta Peer
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town 7505, South Africa
- Department of Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Rajiv T. Erasmus
- Division of Chemical Pathology, Department of Pathology, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town 7505, South Africa
| | - Andre P. Kengne
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town 7505, South Africa
- Department of Medicine, University of Cape Town, Cape Town 7925, South Africa
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Estimating the changing burden of disease attributable to high fasting plasma glucose in South Africa for 2000, 2006 and 2012. S Afr Med J 2022; 112:594-606. [DOI: 10.7196/samj.2022.v112i8b.16659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Indexed: 11/08/2022] Open
Abstract
Background. Worldwide, higher-than-optimal fasting plasma glucose (FPG) is among the leading modifiable risk factors associated with all- cause mortality and disability-adjusted life years (DALYs) due to the direct sequelae of diabetes and the increased risk for cardiovascular and chronic kidney disease.
Objectives. To report deaths and DALYs of health outcomes attributable to high FPG by age and sex for South Africa (SA) for 2000, 2006 and 2012.
Methods. Comparative risk assessment methodology was used to estimate the burden attributable to high FPG. A meta-regression analysis was performed using data from national and small-area studies to estimate the population distribution of FPG and diabetes prevalence. Attributable fractions were calculated for selected health outcomes and applied to local burden estimates from the second South African National Burden of Disease Study (SANBD2). Age-standardised rates were calculated using World Health Organization world standard population weights.
Results. We estimated a 5% increase in mean FPG from 5.31 (95% confidence interval (CI) 5.18 - 5.43) mmol/L to 5.57 (95% CI 5.41 - 5.72) mmol/L and a 75% increase in diabetes prevalence from 7.3% (95% CI 6.7 - 8.3) to 12.8% (95% CI 11.9 - 14.0) between 2000 and 2012. The age-standardised attributable death rate increased from 153.7 (95% CI 126.9 - 192.7) per 100 000 population in 2000 to 203.5 (95% CI 172.2 - 240.8) per 100 000 population in 2012, i.e. a 32.4% increase. During the same period, age-standardised attributable DALY rates increased by 43.8%, from 3 000 (95% CI 2 564 - 3 602) per 100 000 population in 2000 to 4 312 (95% CI 3 798 - 4 916) per 100 000 population in 2012. In each year, females had similar attributable death rates to males but higher DALY rates. A notable exception was tuberculosis, with an age-standardised attributable death rate in males double that in females in 2000 (14.3 v. 7.0 per 100 000 population) and 2.2 times higher in 2012 (18.4 v. 8.5 per 100 000 population). Similarly, attributable DALY rates were higher in males, 1.7 times higher in 2000 (323 v. 186 per 100 000 population) and 1.6 times higher in 2012 (502 v. 321 per 100 000 population). Between 2000 and 2012, the age-standardised death rate for chronic kidney disease increased by 98.3% (from 11.7 to 23.1 per 100 000 population) and the DALY rate increased by 116.9% (from 266 to 578 per 100 000 population).
Conclusion. High FPG is emerging as a public health crisis, with an attributable burden doubling between 2000 and 2012. The consequences are costly in terms of quality of life, ability to earn an income, and the economic and emotional burden on individuals and their families. Urgent action is needed to curb the increase and reduce the burden associated with this risk factor. National data on FPG distribution are scant, and efforts are warranted to ensure adequate monitoring of the effectiveness of the interventions.
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Sagastume D, Sibongwere DK, Kidima O, Kembo DM, N’keto JM, Dimbelolo JC, Nkakirande DB, Kabundi JCK, Peñalvo JL. Improving lifestyle behaviours among women in Kisantu, the Democratic Republic of the Congo: A protocol of a cluster randomised controlled trial. PLoS One 2022; 17:e0274517. [PMID: 36084047 PMCID: PMC9462713 DOI: 10.1371/journal.pone.0274517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022] Open
Abstract
Introduction As the prevalence of obesity among women of reproductive age is increasing in sub-Saharan Africa, the burden of lifestyle-related conditions is expected to rise quickly. This study aims to develop and evaluate a multi-component health promotion programme for a healthy lifestyle to ultimately prevent the onset of type 2 diabetes and gestational diabetes among adult women in Kisantu, the Democratic Republic of the Congo. Methods and analysis This study is a cluster randomised controlled trial whereby two groups of three healthcare centres each, matched by population size coverage and geographical area, will be randomised to an intervention or a comparison group. Adult women of reproductive age (18–49 years), non-pregnant or first-trimester pregnant, will be recruited from the healthcare centres. 144 women in the intervention centres will follow a 24-month multi-component health promotion programme based on educational and motivational strategies whereas the comparison centres (144 participants) will be limited to a basic educational strategy. The programme will be delivered by trained peer educators and entails individualised education sessions, education and physical activity group activities, and focus groups. Topics of an optimal diet, physical activity, weight management and awareness of type 2 and gestational diabetes will be covered. The primary outcome is the adherence to a healthy lifestyle measured by a validated closed-ended questionnaire and secondary outcomes include anthropometric measurements, clinical parameters, diet diversity and the level of physical activity. Participants from both groups will be assessed at baseline and every 6 months by trained health professionals from the recruiting healthcare centres. Data will be summarised by measures of central tendency for continuous outcomes, and frequency distribution and percentages for categorical data. The primary and secondary outcomes will be quantified using statistical mixed models. Ethics This research was approved by the Institutional Review Board of the Institute of Tropical Medicine Antwerp in Belgium (IRB/RR/AC/137) and the Ethical Committee of the University of Kinshasa in the Democratic Republic of the Congo (ESP/CE/130/2021). Any substantial change to the study protocol must be approved by all the bodies that have approved the initial protocol, before being implemented. Also, this journal will be informed regarding any protocol modification. Written informed consent will be required and obtained for all participants. No participant may be enrolled on the study until written informed consent has been obtained. Trial registration number NCT05039307.
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Affiliation(s)
- Diana Sagastume
- Department of Public Health, Non-Communicable Diseases Unit, Institute of Tropical Medicine, Antwerp, Belgium
- * E-mail:
| | | | - Olivier Kidima
- Memisa, Brussels, Belgium
- Memisa Representation in Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Diertho Mputu Kembo
- BDOM-Kisantu Centre Pastoral/Mission Catholique Kisantu, Kisantu, Democratic Republic of the Congo
| | | | | | - Dorothée Bulemfu Nkakirande
- Division des Maladies Non Transmissibles, Direction Surveillance Epidémiologique, Ministère de la Santé, Kinshasa, Democratic Republic of the Congo
| | | | - José L. Peñalvo
- Department of Public Health, Non-Communicable Diseases Unit, Institute of Tropical Medicine, Antwerp, Belgium
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Yusuf AM, Lusobya RC, Mukisa J, Batte C, Nakanjako D, Juliet-Sengeri O. Validity of smartphone-based retinal photography (PEEK-retina) compared to the standard ophthalmic fundus camera in diagnosing diabetic retinopathy in Uganda: A cross-sectional study. PLoS One 2022; 17:e0273633. [PMID: 36067194 PMCID: PMC9447889 DOI: 10.1371/journal.pone.0273633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 08/11/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction Diabetic retinopathy (DR) is one of the major complications of diabetes mellitus and is a significant cause of blindness worldwide. In Uganda, the prevalence of diabetes is approximately 2.7% of the urban population and 1% in rural areas. Many diabetics cannot access an eye exam due to the lack of less costly and user-friendly equipment that primary eye workers can use. Smartphone-based fundus photography allows for a cheap and mobile fundus examination. The study aimed to determine the sensitivity and specificity of the Portable Eye Examination Kit (PEEK) retina compared to a standard ophthalmic fundus camera (Zeiss Visucam 200) for the diagnosis of DR. Methods From January-March 2020, 286 people with diabetes (type 1 & 2) patients were seen at Kiruddu National referral hospital diabetes clinic. All participants had funduscopy with PEEK retina and the standard ophthalmic fundus camera following ophthalmic examination and pupillary dilation. The PEEK retina’s sensitivity, specificity and reliability were determined using an ophthalmic fundus camera as the gold standard. Results The participants’ mean age was 51 with a standard deviation of ±11years, 213 (74.5%) were females, and the majority (93.4%) had Type 2 diabetes. The overall Sensitivity of PEEK retina for DR was 84% (95% CI 70.9–83.5), while the specificity was 79.9% (95% CI 76–83.5) with a positive predictive value (PPV) of 30.9% (95% CI 23.2–39.4) and a negative predictive value (NPV) of 97.9% (95% CI 95.9–99.1). Conclusions PEEK retina has high sensitivity and specificity, making it suitable for screening and diagnostic purposes. Therefore, we recommend the integration of the PEEK retina in the screening and diagnosis of DR in resource-limited settings.
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Affiliation(s)
- Ahmed Mohamud Yusuf
- Department of Ophthalmology, School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Rebecca Claire Lusobya
- Department of Ophthalmology, School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
- * E-mail:
| | - John Mukisa
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Charles Batte
- Department of Medicine, Lung Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Damalie Nakanjako
- Department of Medicine, School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Otiti Juliet-Sengeri
- Department of Ophthalmology, School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
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Mekonnen A, Destaw Z, Derseh D, Gadissa E, Ali S. Impact of COVID-19 on non-communicable disease management services at selected government health centers in Addis Ababa, Ethiopia. Afr Health Sci 2022; 22:527-534. [PMID: 36910376 PMCID: PMC9993267 DOI: 10.4314/ahs.v22i3.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background The global pandemic of COVID-19 forced the world to divert resources and asked the public to shelter-in-place, so the diagnosis surveillance system and management of non-communicable diseases has become more challenging. Objective To identify the impact of COVID-19 on non-communicable diseases management services at government health centers in Addis Ababa, Ethiopia. Methods Health facility based cross-sectional study was conducted from August to September, 2020. A total of 30 health centers were included in this study. Bivariate and multiple logistic regression models were used to assess association between the outcome and independent variables. Results The majority, 24 (80%), of the study participants perceived that the COVID-19 pandemic severely disrupted the non-communicable disease management services. There was a statistically significant association between a decrease in outpatient volume at non communicable disease (NCD) management services (25 (83.3%), P-value: 0.006), closure of population level screening programs of NCDs (22 (73.3%), P-value: 0.007), and closure of disease specific NCD clinics and the occurrence of the COVID-19 pandemic (23 (76.7%), P-value: 0.013). Conclusion The most critical health-care services for non-communicable diseases management were severely disrupted by the COVID-19 pandemic. Therefore, during public health emergencies, policymakers should ensure continuation of critical clinical services and inform the public about proper service utilization.
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Affiliation(s)
- Abiyu Mekonnen
- Department of Medical Laboratory Sciences, Menelik-II Medical and Health Sciences College, Kotebe Metropolitan University, Addis Ababa, Ethiopia
| | - Zelalem Destaw
- Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Dejene Derseh
- Department of Medical Laboratory Sciences, Menelik-II Medical and Health Sciences College, Kotebe Metropolitan University, Addis Ababa, Ethiopia
| | - Eshetu Gadissa
- Department of Medical Laboratory Sciences, Menelik-II Medical and Health Sciences College, Kotebe Metropolitan University, Addis Ababa, Ethiopia
| | - Solomon Ali
- Department of Microbiology, Saint Paul's Hospital-Millennium Medical College, Addis Ababa, Ethiopia
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Sagastume D, Mertens E, Sibongwere DK, Dimbelolo JC, Kabundi JCK, de Man J, Van Olmen J, Peñalvo JL. A retrospective database study of the demographic features and glycemic control of patients with type 2 diabetes in Kinshasa, Democratic Republic of the Congo. BMC Med 2022; 20:258. [PMID: 35982436 PMCID: PMC9389797 DOI: 10.1186/s12916-022-02458-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 07/01/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The Kin-Antwerp project aimed at improving the quality of care provided to patients with diabetes in Kinshasa, the Democratic Republic of the Congo in Central Africa, including the digitalisation of routine clinical data to improve patients' follow-up. We aim to analyse the data of a study population of Kin-Antwerp to characterise their demographic features, assess their achievement of glycemic target over time, and identify groups requiring prioritised attention. METHODS We performed a secondary database analysis of routinely collected information from primary care patients with type 2 diabetes followed from 1991 to 2019. Data included demographics (age, sex), anthropometrics (weight, height), clinical parameters (blood pressure, plasma glucose), and anti-diabetic treatments. Achievement of glycemic target, defined as fasting plasma glucose < 126 mg/dL, over time was assessed using a multilevel mixed-effects logistic regression model. RESULTS Our study population of patients with type 2 diabetes (N = 8976) comprised a higher proportion of women (67%) and patients between 40 and 65 years old (70.4%). At the first follow-up, most patients were on treatment with insulin (56.5%) and had glycemic levels under the target (79.9%). Women presented more often with obesity (27.4%) and high systolic blood pressure (41.8%) than men (8.6% and 37.0%, respectively). Patients had a median follow-up of 1.8 (interquartile range: 0.5-3.4) years. Overall, the odds of achieving glycemic target increased by 18.4% (odds ratio: 1.184, 95% CI: 1.130 to 1.239; p < 0.001) per year of follow-up. Stratified analyses suggested that the odds of achieving glycemic control over time increased among older patients (> 40 years), but not among younger patients (< 40 years). CONCLUSION In our study population, an overall poor glycemic control was observed albeit with a modest improvement in the achievement of glycemic target throughout patients' follow-up. Younger patients may benefit from prioritised attention to achieve glycemic targets. Based on the information provided by the database, continue monitoring and improvement of the project Kin-Antwerp is recommended. Introducing further efforts to improve type 2 diabetes management should include robust glycemia-monitoring tools and haemoglobin A1c, as well as further outlining self-management strategies.
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Affiliation(s)
- Diana Sagastume
- Unit of Non-Communicable Diseases, Department of Public Health, Institute of Tropical Medicine, Nationalestraat 155, 2000, Antwerp, Belgium.
| | - Elly Mertens
- Unit of Non-Communicable Diseases, Department of Public Health, Institute of Tropical Medicine, Nationalestraat 155, 2000, Antwerp, Belgium
| | - Deogratias Katsuva Sibongwere
- Unit of Non-Communicable Diseases, Department of Public Health, Institute of Tropical Medicine, Nationalestraat 155, 2000, Antwerp, Belgium
| | - Jean-Claude Dimbelolo
- Centre d'Éducation Diabète & Santé Boulevard Lumumba n° 1 Musoso district, Municipality of Limete, Kinshasa, Democratic Republic of the Congo
| | - Jean Clovis Kalobu Kabundi
- Memisa, 19 Square de Meeûs, 1050 Brussels, Belgium and Memisa representation in Kinshasa, 47 Kisangani, commune de la Gombe, Kinshasa, Democratic Republic of the Congo
| | - Jeroen de Man
- Department of Family Medicine and Population Health, University of Antwerp, Doornstraat 331, 2610, Wilrijk, Belgium
| | - Josefien Van Olmen
- Department of Family Medicine and Population Health, University of Antwerp, Doornstraat 331, 2610, Wilrijk, Belgium
| | - José L Peñalvo
- Unit of Non-Communicable Diseases, Department of Public Health, Institute of Tropical Medicine, Nationalestraat 155, 2000, Antwerp, Belgium
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Mendham AE, Goedecke JH, Kufe NC, Soboyisi M, Smith A, Westgate K, Brage S, Micklesfield LK. Physical Behaviors and Their Association With Adiposity in Men and Women From a Low-Resourced African Setting. J Phys Act Health 2022; 19:548-557. [PMID: 35894904 DOI: 10.1123/jpah.2022-0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/07/2022] [Accepted: 06/22/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND We first explored the associations between physical behaviors and total and regional adiposity. Second, we examined how reallocating time in different physical behaviors was associated with total body fat mass in men and women from a low-income South African setting. METHODS This cross-sectional study included a sample of 692 participants (384 men and 308 women) aged 41-72 years. Physical behaviors were measured using integrated hip and thigh accelerometry to estimate total movement volume and time spent in sleeping, sitting/lying, standing, light physical activity, and moderate to vigorous physical activity (MVPA). Total body fat mass and regional adiposity were measured using dual-energy X-ray absorptiometry. RESULTS The associations between total movement volume and measures of regional obesity were mediated by total body adiposity. In men, reallocating 30 minutes of sitting/lying to 30 minutes of MVPA was associated with 1.0% lower fat mass. In women, reallocation of 30 minutes of sitting/lying to MVPA and 30 minutes of standing to MVPA were associated with a 0.3% and 1.4% lower fat mass, respectively. CONCLUSIONS Although the association between physical behaviors and fat mass differed between men and women, the overall public health message is similar; reallocating sedentary time to MVPA is associated with a reduction in fat mass in both men and women.
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Affiliation(s)
- Amy E Mendham
- South African Medical Research Council/Wits Developmental Pathways for Health Research Unit (DPHRU), Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,South Africa
- Health through Physical Activity, Lifestyle and Sport Research Centre (HPALS), FIMS International Collaborating Centre of Sports Medicine, Division of Physiological Sciences, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town,South Africa
| | - Julia H Goedecke
- South African Medical Research Council/Wits Developmental Pathways for Health Research Unit (DPHRU), Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,South Africa
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town,South Africa
| | - Nyuyki Clement Kufe
- South African Medical Research Council/Wits Developmental Pathways for Health Research Unit (DPHRU), Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,South Africa
- Epidemiology and Surveillance Section, National Institute for Occupational Health, National Health Laboratory Service, Johannesburg,South Africa
| | - Melikhaya Soboyisi
- South African Medical Research Council/Wits Developmental Pathways for Health Research Unit (DPHRU), Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,South Africa
| | - Antonia Smith
- MRC Epidemiology Unit, University of Cambridge, Cambridge,United Kingdom
| | - Kate Westgate
- MRC Epidemiology Unit, University of Cambridge, Cambridge,United Kingdom
| | - Soren Brage
- MRC Epidemiology Unit, University of Cambridge, Cambridge,United Kingdom
| | - Lisa K Micklesfield
- South African Medical Research Council/Wits Developmental Pathways for Health Research Unit (DPHRU), Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,South Africa
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Yanda Tongo S, Longo-Mbenza B, Molua Aundu A, Gombet R, Makulo Risasi JR, Kisoka Lusunsi C, Mawalala Malengele H, Nge Okwe A. Are Any Changes in Carotid Intima–Media Thickness Associated with Cardiometabolic Risk Among Adult Bantu Central African Hypertensive Patients from Monkole and Biamba Marie Mutombo Hospitals? Vasc Health Risk Manag 2022; 18:453-461. [PMID: 35800291 PMCID: PMC9255902 DOI: 10.2147/vhrm.s366339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022] Open
Abstract
Background Several classic/traditional risk factors are associated with intima–media thickness (IMT), a novel risk of cardio metabolic risk (CMR) in the literature but not in Kinshasa, a megacity prone to CMR. Thus, the objective of this study was to evaluate potential correlations between inflammation, kidney function, psychological stress, hemodynamics, and changes in IMT. Methods This cross-sectional study was carried out between 2018 and 2021 within Monkole and Biamba Marie Mutombo Hospitals, respectively, and randomly selected from 10 health structures from East and West of Kinshasa, Capital of Democratic Republic Congo (DRC). A random sample of adult hypertensive Bantu Central Africans was examined after bivariate correlations and multiple linear regression. Results Out of 280 patients with 140 men and 140 women aged 62 ± 11 years, the mean carotid intima–media thickness (CIMT) was 1.06 ± 0.5 mm and 73% (n = 204) patients had uncontrolled hypertension. After controlling for confounders, 52.9% variations (R2) of CIMT were independently and significantly (P = 0.037) predicted by CRP, 24-hour proteinuria, urinary albumin/creatinine ratio, duration of hypertension, heart rate, hip circumference, and psychological stress with Equation Y = 0.717 + 0.87 × CRP + 0.02 × 24 H – proteinuria + 0.005 × urinary albumin/creatinine ratio + 0.05 × duration of hypertension + 0.001 × heart rate + 0.006 × hip circumference + 0.017 × psychological stress. Conclusion There is an urgent need to control inflammation, impaired renal function, cardiac rhythm, peripheral obesity, longer duration of hypertension management, and stress, which are emerging as specific novel determinants of the subclinical atherosclerosis for those Bantu Central African hypertensive patients.
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Affiliation(s)
- Stéphane Yanda Tongo
- Radiology Service, Cliniques Universitaires de Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Benjamin Longo-Mbenza
- Cardiology Service, Cliniques Universitaires de Kinshasa, Kinshasa, Democratic Republic of Congo
- Department of Public Health, Lomo University for Research, Kinshasa, Democratic Republic of Congo
- Correspondence: Benjamin Longo-Mbenza, Faculty of Health Science, Private Bay XI, Mthatha, Eastern Cape, 5117, South Africa, Tel +243 814396257, Email
| | - Antoine Molua Aundu
- Radiology Service, Cliniques Universitaires de Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Raoul Gombet
- Marien Ngouabi University, Brazzaville, Democratic Republic of Congo
| | | | - Christian Kisoka Lusunsi
- Department of Public Health, Lomo University for Research, Kinshasa, Democratic Republic of Congo
| | | | - Augustin Nge Okwe
- Department of Public Health, Lomo University for Research, Kinshasa, Democratic Republic of Congo
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Chihota BV, Riebensahm C, Muula G, Sinkala E, Chilengi R, Mulenga L, Bosomprah S, Vinikoor MJ, Bolton-Moore C, Egger M, Rauch A, Berzigotti A, Wandeler G. Liver steatosis and metabolic dysfunction-associated fatty liver disease among HIV-positive and negative adults in urban Zambia. BMJ Open Gastroenterol 2022; 9:bmjgast-2022-000945. [PMID: 35831020 PMCID: PMC9280874 DOI: 10.1136/bmjgast-2022-000945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/14/2022] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION The growing importance of non-communicable diseases (NCDs) and high HIV prevalence in urban African settings may increase the burden of metabolic dysfunction-associated fatty liver disease (MAFLD). We assessed liver steatosis among HIV-positive and negative adults in urban Zambia. METHODS Adults 30 years and older who were newly diagnosed with HIV, or tested HIV-negative at two primary care clinics in Lusaka, Zambia, were assessed for liver steatosis. Cardiometabolic data were collected through comprehensive clinical and laboratory assessments. Transient elastography was performed to measure controlled-attenuation parameter (≥248 dB/m). We used multivariable logistic regression models to determine the factors associated with the presence of steatosis. RESULTS We enrolled 381 patients, including 154 (40%) antiretroviral therapy-naïve people living with HIV (PLWH) with a median CD4+ count of 247 cells/mm3 and a mean body mass index (BMI) of 23.8 kg/m2. Liver steatosis was observed in 10% of participants overall and was more common among HIV-negative adults than in PLWH (15% vs 3%). The proportion of patients with steatosis was 25% among obese (BMI ≥30 kg/m2) participants, 12% among those overweight (BMI 25-29.9 kg/m2), and 7% among those with a BMI <25 kg/m2. Among patients with a fasting glucose ≥7 mmol/L or confirmed diabetes, 57% had liver steatosis. In multivariable analyses, HIV status (adjusted odds ratio (aOR) 0.18, 95% CI 0.06 to 0.53), confirmed diabetes or elevated fasting glucose (aOR 3.92, 95% CI 1.57 to 9.78) and elevated blood pressure (aOR 2.95, 95% CI 1.34 to 6.48) were associated with steatosis. The association between BMI>25 kg/m2 and liver steatosis was attenuated after adjustment for potential confounders (aOR 1.96, 95% CI 0.88-4.40). Overall, 21 (9%) participants without HIV and 4 (3%) with HIV met the criteria for MAFLD. Among individuals with liver steatosis, 65% (95% CI 49% to 80%) fulfilled criteria of MAFLD, whereas 15 (39%) of them had elevated transaminases and 3 (8%) F2-F4 fibrosis. CONCLUSIONS The prevalence of liver steatosis in this urban cohort of HIV-positive and negative adults in Zambia was low, despite a large proportion of patients with high BMI and central obesity. Our study is among the first to report data on MAFLD among adults in Africa, demonstrating that metabolic risk factors are key drivers of liver steatosis and supporting the adoption of the criteria for MAFLD in African populations.
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Affiliation(s)
- Belinda Varaidzo Chihota
- Centre for Infectious Disease Research in Zambia, Lusaka, Zambia .,Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.,Graduate School of Health Sciences, University of Bern, Bern, Switzerland
| | - Carlotta Riebensahm
- Graduate School of Health Sciences, University of Bern, Bern, Switzerland.,Department of Infectious Diseases, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Guy Muula
- Centre for Infectious Disease Research in Zambia, Lusaka, Zambia
| | - Edford Sinkala
- Department of Internal Medicine, University Teaching Hospital, Lusaka, Zambia
| | - Roma Chilengi
- Centre for Infectious Disease Research in Zambia, Lusaka, Zambia
| | | | - Samuel Bosomprah
- Centre for Infectious Disease Research in Zambia, Lusaka, Zambia.,Department of Biostatistics, University of Ghana, Accra, Ghana
| | - Michael J Vinikoor
- Department of Medicine, The University of Alabama, Birmingham, Alabama, USA
| | - Carolyn Bolton-Moore
- Centre for Infectious Disease Research in Zambia, Lusaka, Zambia.,Department of Medicine, The University of Alabama, Birmingham, Alabama, USA
| | - Matthias Egger
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.,Centre for Infectious Disease Research, University of Cape Town, Cape Town, South Africa
| | - Andri Rauch
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Annalisa Berzigotti
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Gilles Wandeler
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.,Department of Infectious Diseases, Bern University Hospital, University of Bern, Bern, Switzerland
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Micklesfield LK, Kolkenbeck-Ruh A, Mukoma G, Prioreschi A, Said-Mohamed R, Ware LJ, Motlhatlhedi M, Wrottesley SV, Norris SA. The Healthy Aging Adult South Africa report card: a systematic review of the evidence between 2013 and 2020 for middle-aged South African men and women. Cardiovasc J Afr 2022; 33:200-219. [PMID: 35789240 PMCID: PMC9650148 DOI: 10.5830/cvja-2022-015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 03/14/2022] [Indexed: 10/03/2023] Open
Abstract
Due to the increasing non-communicable disease burden in Africa, several strategies that target the major lifestyle and physiological risk factors have been implemented to combat such diseases. The Healthy Aging Adult South Africa report card systematically reviews national and regional prevalence data of middle-aged South African adults (45-65 years) published between 2013 and 2020 on diet, physical activity, tobacco use and alcohol consumption, obesity, hypertension, dyslipidaemia and diabetes mellitus. Each indicator was assigned two grades, (1) based on the availability of prevalence data, and (2) based on whether policies have been proposed and implemented for the respective indicators. Alcohol consumption, obesity, hypertension and diabetes received an A grade for the availability of prevalence data. Tobacco use and diet received an A grade for policy and implementation. Gaps have been identified that need to be filled by future research focusing on continued surveillance of all indicators in order to inform and implement effective policies.
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Affiliation(s)
- Lisa K Micklesfield
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - Andrea Kolkenbeck-Ruh
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Gudani Mukoma
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Alessandra Prioreschi
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Rihlat Said-Mohamed
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Lisa J Ware
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Molebogeng Motlhatlhedi
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Stephanie V Wrottesley
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Shane A Norris
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Issaka A, Cameron AJ, Paradies Y, Bosu WK, Houehanou YCN, Kiwallo JB, Wesseh CS, Houinato DS, Nazoum DJP, Stevenson C. Effect of age and sex on the associations between potential modifiable risk factors and both type 2 diabetes and impaired fasting glycaemia among West African adults. BMC Public Health 2022; 22:1211. [PMID: 35715792 PMCID: PMC9206253 DOI: 10.1186/s12889-022-13588-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/26/2022] [Indexed: 12/02/2022] Open
Abstract
Background Type 2 diabetes mellitus (T2DM) is becoming one of the leading causes of morbidity and mortality worldwide, including among Africans. Knowledge of the association between traditional risk factors and both diabetes and pre-diabetes, and whether these differ by age and sex, is important for designing targeted interventions. However, little is known about these associations for African populations. Methods The study used data from WHO STEPS surveys, comprising 15,520 participants (6,774 men and 8,746 women) aged 25–64 years, from 5 different West African countries, namely Burkina Faso (4,711), Benin (3,816), Mali (1,772), Liberia (2,594), and Ghana (2,662). T-test and chi-square tests were used to compare differences in the prevalence of traditional risk factors for both sexes. Multinomial logistic regression was conducted to ascertain the relative risks (RR) and 95% confidence intervals (CI) for both T2DM and impaired fasting glucose (IFG) relating to each risk factor, including obesity [defined by BMI, waist circumference (WC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR)], high blood pressure (HBP), fruit and vegetable consumption, physical inactivity, alcohol consumption, and smoking. Models for each of these traditional risk factors and interactions with age and sex were fitted. Results Factors associated with T2DM and IFG were age, obesity [defined by BMI, WC, WHtR, and WHR], HBP, smoking, physical inactivity, and fruit and vegetable consumption (p < 0.05). Analysis of interaction effects showed few significant differences in associations between risk factors and T2DM according to age or sex. Significant interaction with age was observed for HBP*age and T2DM [RR; 1.20, 95% CI: (1.01, 1.42)) (p = 0.04)], WHtR*age and T2DM [RR; 1.23, 95% CI: (1.06, 1.44) (p = 0.007)] and WHR*age and IFG [RR: 0.79, 95% CI: (0.67, 0.94) (p = 0.006)]. Some interactions with age and sex were observed for the association of alcohol consumption and both IFG and T2DM, but no clear patterns were observed. Conclusion The study found that with very few exceptions, associations between traditional risk factors examined and both IFG and T2DM did not vary by age or sex among the West African population. Policies and public health intervention strategies for the prevention of T2DM and IFG should target adults of any age or sex in West Africa.
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Affiliation(s)
- Ayuba Issaka
- School of Health and Social Development, Faculty of Health, Deakin University, Waurn Ponds Campus, Locked Bag 20000, Geelong, VIC, 3220, Australia. .,Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia. .,Baker Heart and Diabetes Institute, 75 Commercial Road, Melbourne, VIC, 3004, Australia.
| | - Adrian J Cameron
- School of Health and Social Development, Faculty of Health, Deakin University, Waurn Ponds Campus, Locked Bag 20000, Geelong, VIC, 3220, Australia
| | - Yin Paradies
- Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia
| | - William K Bosu
- West Africa Health Organization, 01 BP 153, Bobo-Dioulasso, Burkina Faso
| | - Yèssito Corine N Houehanou
- National School of Senior Technicians Training in Public Health and Epidemiological Surveillance, University of Parakou, Postal Box 122, Parakou, Benin
| | - Jean B Kiwallo
- Directorate of Population Health Protection (DPSP) of the Burkina Faso, Ministry of Health, Ouagadougou, Burkina Faso
| | - Chea S Wesseh
- Ministry of Health, Republic of Liberia. Congo Town, Monrovia, Liberia
| | - Dismand S Houinato
- Laboratory of Epidemiology of Chronic and Neurological Diseases (LEMACEN), Faculty of Health Sciences: 01 Postal, University of Abomey Calavi, Box 188, Cotonou, Benin
| | - Diarra J P Nazoum
- Former Head of Noncommunicable Diseases, National Directorate of Health, Ministry of Health and Public Hygiene, Bomako, Mali
| | - Christopher Stevenson
- School of Health and Social Development, Faculty of Health, Deakin University, Waurn Ponds Campus, Locked Bag 20000, Geelong, VIC, 3220, Australia
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Ewuola AI, Olorunfemi G, Mthombeni JQ. Sociodemographic predictors of endometrial cancer mortality in South Africa (1997 to 2015): a case-control study. J OBSTET GYNAECOL 2022; 42:2241-2247. [DOI: 10.1080/01443615.2022.2036971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Adebukola I. Ewuola
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Gbenga Olorunfemi
- Division of Epidemiology and Biostatistics, Faculty of Public Health, University of Witwatersrand, Johannesburg, South Africa
| | - Julian Q. Mthombeni
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
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Glenn BE, Espira LM, Larson MC, Larson PS. Ambient air pollution and non-communicable respiratory illness in sub-Saharan Africa: a systematic review of the literature. Environ Health 2022; 21:40. [PMID: 35422005 PMCID: PMC9009030 DOI: 10.1186/s12940-022-00852-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 04/04/2022] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Aerosol pollutants are known to raise the risk of development of non-communicable respiratory diseases (NCRDs) such as asthma, chronic bronchitis, chronic obstructive pulmonary disease, and allergic rhinitis. Sub-Saharan Africa's rapid pace of urbanization, economic expansion, and population growth raise concerns of increasing incidence of NCRDs. This research characterizes the state of research on pollution and NCRDs in the 46 countries of Sub-Saharan Africa (SSA). This research systematically reviewed the literature on studies of asthma; chronic bronchitis; allergic rhinitis; and air pollutants such as particulate matter, ozone, NOx, and sulfuric oxide. METHODS We searched three major databases (PubMed, Web of Science, and Scopus) using the key words "asthma", "chronic bronchitis", "allergic rhinitis", and "COPD" with "carbon monoxide (CO)", "sulfuric oxide (SO)", "ozone (O3)", "nitrogen dioxide (NO2)", and "particulate matter (PM)", restricting the search to the 46 countries that comprise SSA. Only papers published in scholarly journals with a defined health outcome in individuals and which tested associations with explicitly measured or modelled air exposures were considered for inclusion. All candidate papers were entered into a database for review. RESULTS We found a total of 362 unique research papers in the initial search of the three databases. Among these, 14 met the inclusion criteria. These papers comprised studies from just five countries. Nine papers were from South Africa; two from Malawi; and one each from Ghana, Namibia, and Nigeria. Most studies were cross-sectional. Exposures to ambient air pollutants were measured using spectrometry and chromatography. Some studies created composite measures of air pollution using a range of data layers. NCRD outcomes were measured by self-reported health status and measures of lung function (spirometry). Populations of interest were primarily schoolchildren, though a few studies focused on secondary school students and adults. CONCLUSIONS The paucity of research on NCRDs and ambient air pollutant exposures is pronounced within the African continent. While capacity to measure air quality in SSA is high, studies targeting NCRDs should work to draw attention to questions of outdoor air pollution and health. As the climate changes and SSA economies expand and countries urbanize, these questions will become increasingly important.
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Affiliation(s)
- Bailey E. Glenn
- Department of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA USA
| | - Leon M. Espira
- Center for Global Health Equity, University of Michigan, Ann Arbor, USA
| | | | - Peter S. Larson
- Department of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA USA
- Social Environment and Health Program, Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI USA
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI USA
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Henjum S, Hjellset VT, Andersen E, Flaaten MØ, Morseth MS. Developing a risk score for undiagnosed prediabetes or type 2 diabetes among Saharawi refugees in Algeria. BMC Public Health 2022; 22:720. [PMID: 35410198 PMCID: PMC9004169 DOI: 10.1186/s12889-022-13007-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 03/16/2022] [Indexed: 11/29/2022] Open
Abstract
Aims To prevent type 2 diabetes mellitus (T2D) and reduce the risk of complications, early identification of people at risk of developing T2D, preferably through simple diabetes risk scores, is essential. The aim of this study was to create a risk score for identifying subjects with undiagnosed prediabetes or T2D among Saharawi refugees in Algeria and compare the performance of this score to the Finnish diabetes risk score (FINDRISC). Methods A cross-sectional survey was carried out in five Saharawi refugee camps in Algeria in 2014. A total of 180 women and 175 men were included. HbA1c and cut-offs proposed by the American Diabetes Association (ADA) were used to define cases. Variables to include in the risk score were determined by backwards elimination in logistic regression. Simplified scores were created based on beta coefficients from the multivariable model after internal validation with bootstrapping and shrinkage. The empirical cut-off value for the simplified score and FINDRISC was determined by Area Under the Receiver Operating Curve (AUROC) analysis. Results Variables included in the final risk score were age, body mass index (BMI), and waist circumference. The area under the curve (AUC) (C.I) was 0.82 (0.76, 0.88). The sensitivity, specificity, and positive and negative predictive values were 89, 65, 28, and 97%, respectively. AUC and sensitivity were slightly higher and specificity somewhat lower than for FINDRISC. Conclusions The risk score developed is a helpful tool to decide who should be screened for prediabetes or T2D by blood sample analysis. The performance of the risk score was adequate based on internal validation with bootstrap analyses, but should be confirmed in external validation studies.
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Affiliation(s)
- Sigrun Henjum
- Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | | | - Eivind Andersen
- Faculty of Humanities, Sports and Educational Science, University of South-Eastern Norway, Horten, Norway
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Motala AA, Mbanya JC, Ramaiya K, Pirie FJ, Ekoru K. Type 2 diabetes mellitus in sub-Saharan Africa: challenges and opportunities. Nat Rev Endocrinol 2022; 18:219-229. [PMID: 34983969 DOI: 10.1038/s41574-021-00613-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/25/2021] [Indexed: 12/26/2022]
Abstract
Type 2 diabetes mellitus (T2DM), which was once thought to be rare in sub-Saharan Africa (SSA), is now well established in this region. The SSA region is undergoing a rapid but variable epidemiological transition fuelled by the pace of urbanization, with disease burden profiles shifting from communicable diseases to non-communicable diseases (NCDs). Information on the epidemiology of T2DM has increased, but wide variations in study methods, diagnostic biomarkers and criteria hamper analytical comparison, and data from high-quality studies are limited. The prevalence of T2DM is still low in some rural populations but moderate or high rates are reported in many countries/regions, with evidence for an increase in some. In addition, the proportion of undiagnosed T2DM is still high. The prevalence of T2DM is highest in African people living in urban areas, and the gradient between African people living in urban areas and people in the African diaspora is rapidly fading. However, data from longitudinal studies are lacking and there is limited information on chronic complications and the genetics of T2DM. The large unmet needs for T2DM care call for greater investment of resources into health systems to manage NCDs in SSA. Proposed health-system paradigms are being developed in some countries/regions. However, national NCD programmes need to be adequately funded and coordinated to stem the tide of T2DM and its complications.
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Affiliation(s)
- Ayesha A Motala
- Inkosi Albert Luthuli Central Hospital, Durban, South Africa.
- Department of Diabetes and Endocrinology, University of KwaZulu-Natal, Durban, South Africa.
| | - Jean Claude Mbanya
- Department of Internal Medicine and Specialities, Faculty of Medicine and Biomedical Sciences University of Yaounde 1, Yaounde, Cameroon
| | | | - Fraser J Pirie
- Inkosi Albert Luthuli Central Hospital, Durban, South Africa
- Department of Diabetes and Endocrinology, University of KwaZulu-Natal, Durban, South Africa
| | - Kenneth Ekoru
- Centre for Research on Genomics and Global Health, National Human Genome Research Institute, National Institute of Health, Bethesda, MD, USA
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Chivese T, Hirst J, Matizanadzo JT, Custodio M, Farmer A, Norris S, Levitt N. The diagnostic accuracy of HbA 1c , compared to the oral glucose tolerance test, for screening for type 2 diabetes mellitus in Africa-A systematic review and meta-analysis. Diabet Med 2022; 39:e14754. [PMID: 34854127 DOI: 10.1111/dme.14754] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 11/29/2021] [Indexed: 01/16/2023]
Abstract
OBJECTIVE To assess the diagnostic accuracy of glycated haemoglobin A1c (HbA1c ), compared to fasting plasma glucose (FPG) and the oral glucose tolerance test (OGTT), in screening for type 2 diabetes (T2D) in Africa. METHODS We systematically searched databases for studies that compared the HbA1c to either the OGTT, or the FPG for T2D diagnosis were included. The QUADAS 2 tool was used for assessing the quality of included studies. We used the split component synthesis (SCS) method for the meta-analysis of diagnostic accuracy studies to pool the studies for meta-analysis of sensitivity and specificity, primarily at the HbA1c ≥48 mmol/mol (6.5%) cut-off and at other cut-offs. We assessed heterogeneity using the I2 statistic and publication bias using Doi plots. RESULTS Eleven studies, from seven African countries, with 12,925 participants, were included. Against the OGTT, HbA1c ≥48 mmol/mol (6.5%) had a pooled sensitivity of 57.7% (95% confidence interval [CI] 43.4-70.9) and specificity of 92.3% (95% CI 83.9-96.5). Against the FPG, HbA1c ≥48 mmol/mol (6.5%) had a pooled sensitivity of 64.5% (95% CI 50.5-76.4) and specificity of 94.3% (95% CI 87.9-97.5). The highest sensitivity for HbA1c , against the OGTT, was at the 42 mmol/mol (6.0%) cut-off. CONCLUSION In Africa, the HbA1c ≥48 mmol/mol (6.5%) cut-off may miss almost half of the individuals with T2D based on blood glucose measures.
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Affiliation(s)
- Tawanda Chivese
- Department of Population Medicine, College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Jennifer Hirst
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Joshua T Matizanadzo
- Department of Public Health and Primary Care, Brighton & Sussex Medical School, Brighton, UK
| | - Michael Custodio
- Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Andrew Farmer
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Shane Norris
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Medicine and Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Naomi Levitt
- Chronic Disease Initiative for Africa, Department of Medicine, Faculty of Medicine and Health Sciences, University of Cape Town, Cape Town, South Africa
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Kufe CN, Micklesfield LK, Masemola M, Chikowore T, Kengne AP, Karpe F, Norris SA, Crowther NJ, Olsson T, Goedecke JH. Increased risk for type 2 diabetes in relation to adiposity in middle-aged Black South African men compared to women. Eur J Endocrinol 2022; 186:523-533. [PMID: 35225824 PMCID: PMC9010812 DOI: 10.1530/eje-21-0527] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 02/28/2022] [Indexed: 11/08/2022]
Abstract
AIMS Despite a higher prevalence of overweight/obesity in Black South African women compared to men, the prevalence of type 2 diabetes (T2D) does not differ. We explored if this could be due to sex differences in insulin sensitivity, clearance and/or beta-cell function and also sex-specific associations with total and regional adiposity. METHODS This cross-sectional study included 804 Black South African men (n = 388) and women (n = 416). Dual-energy X-ray absorptiometry was used to measure total and regional adiposity. Insulin sensitivity (Matsuda index), secretion (C-peptide index) and clearance (C-peptide/insulin ratio) were estimated from an oral glucose tolerance test. RESULTS After adjusting for sex differences in the fat mass index, men were less insulin sensitive and had lower beta-cell function than women (P < 0.001), with the strength of the associations with measures of total and central adiposity being greater in men than women (P < 0.001 for interactions). Further, the association between total adiposity and T2D risk was also greater in men than women (relative risk ratio (95% CI): 2.05 (1.42-2.96), P < 0.001 vs 1.38 (1.03-1.85), P = 0.031). CONCLUSION With increasing adiposity, particularly increased centralisation of body fat linked to decreased insulin sensitivity and beta-cell function, Black African men are at greater risk for T2D than their female counterparts.
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Affiliation(s)
- Clement N Kufe
- Department of Paediatrics, South African Medical Research Council (SAMRC), WITS, Developmental Pathways for Health Research Unit (DPHRU), Faculty of Health Sciences, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- Correspondence should be addressed to C Kufe;
| | - Lisa K Micklesfield
- Department of Paediatrics, South African Medical Research Council (SAMRC), WITS, Developmental Pathways for Health Research Unit (DPHRU), Faculty of Health Sciences, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
| | - Maphoko Masemola
- Department of Paediatrics, South African Medical Research Council (SAMRC), WITS, Developmental Pathways for Health Research Unit (DPHRU), Faculty of Health Sciences, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
| | - Tinashe Chikowore
- Department of Paediatrics, South African Medical Research Council (SAMRC), WITS, Developmental Pathways for Health Research Unit (DPHRU), Faculty of Health Sciences, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
| | - Andre P Kengne
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Fredrik Karpe
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
- National Institute for Health Research, Oxford Biomedical Research Centre, Oxford Radcliffe Hospitals Trust, OCDEM, Churchill Hospital, Oxford, UK
| | - Shane A Norris
- Department of Paediatrics, South African Medical Research Council (SAMRC), WITS, Developmental Pathways for Health Research Unit (DPHRU), Faculty of Health Sciences, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- Global Health Research Institute, School of Human Development and Health, University of Southampton, Southampton, UK
| | - Nigel J Crowther
- Department of Chemical Pathology, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tommy Olsson
- Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden
| | - Julia H Goedecke
- Department of Paediatrics, South African Medical Research Council (SAMRC), WITS, Developmental Pathways for Health Research Unit (DPHRU), Faculty of Health Sciences, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
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Mapunda JA, Tibar H, Regragui W, Engelhardt B. How Does the Immune System Enter the Brain? Front Immunol 2022; 13:805657. [PMID: 35273596 PMCID: PMC8902072 DOI: 10.3389/fimmu.2022.805657] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 01/31/2022] [Indexed: 12/13/2022] Open
Abstract
Multiple Sclerosis (MS) is considered the most frequent inflammatory demyelinating disease of the central nervous system (CNS). It occurs with a variable prevalence across the world. A rich armamentarium of disease modifying therapies selectively targeting specific actions of the immune system is available for the treatment of MS. Understanding how and where immune cells are primed, how they access the CNS in MS and how immunomodulatory treatments affect neuroinflammation requires a proper knowledge on the mechanisms regulating immune cell trafficking and the special anatomy of the CNS. The brain barriers divide the CNS into different compartments that differ with respect to their accessibility to cells of the innate and adaptive immune system. In steady state, the blood-brain barrier (BBB) limits immune cell trafficking to activated T cells, which can reach the cerebrospinal fluid (CSF) filled compartments to ensure CNS immune surveillance. In MS immune cells breach a second barrier, the glia limitans to reach the CNS parenchyma. Here we will summarize the role of the endothelial, epithelial and glial brain barriers in regulating immune cell entry into the CNS and which immunomodulatory treatments for MS target the brain barriers. Finally, we will explore current knowledge on genetic and environmental factors that may influence immune cell entry into the CNS during neuroinflammation in Africa.
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Affiliation(s)
| | - Houyam Tibar
- Medical School of Rabat, Mohamed 5 University, Rabat, Morocco.,Hôpital des spécialités de Rabat, Ibn Sina University Hospital of Rabat, Rabat, Morocco
| | - Wafa Regragui
- Medical School of Rabat, Mohamed 5 University, Rabat, Morocco.,Hôpital des spécialités de Rabat, Ibn Sina University Hospital of Rabat, Rabat, Morocco
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Surbakti E, Hasibuan Y, Pasaribu R. The Effectiveness of Local-Leader-Based Social Interventions on Knowledge and Attitudes of Early Marriage among Mother Who Have Teenage Children. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.8544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract.
Introduction. Early marriage causes pregnancy and early delivery with complications of pregnancy, childbirth, low birth weight, and stunting and has an impact on high maternal and child mortality rates. Local leader-based social intervention for parents with adolescents can increase knowledge and attitudes in preventing early marriage. This study aims to analyze the effectiveness of social interventions by community leaders on the knowledge, attitudes of mothers, and young women.
Methode. The study was conducted in the district of Deliserdang, subdistrict Percut Sei Tuan, Sumatera Utara province,Indonesia. We conducted a prospective cross-sectional interventional study with baseline survey and repeat surveys to evaluate the effectiveness of social interventions by community leaders on the knowledge, attitudes of mothers, and young women. Fifteen participants local leaders from the community were trained to provide early marriage prevention education. The training was carried out for two days. After the training, the researchers assisted for 2 weeks in conducting early marriage prevention education to the community. After mentoring, each participant carried out early marriage prevention education independently. 308 for adolescents and parents (154 in the intervention group and 154 in the control group) were selected by systematic sampling to assess the effectiveness. Data was collected using a questioner and analyzed by Mann Whitney test.
Result. Social intervention by local leaders as agents of change in the community for six months and controls were given leaflets for adolescents and parents, indicating that interventions carried out by community leaders were more effective in increasing the knowledge and attitudes of parents and young women compared to giving leaflets (p-value <0.05).
Conclusion. Social intervention based on local leaders is more effectively used as a method of early marriage prevention education.
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Pradeilles R, Holdsworth M, Olaitan O, Irache A, Osei-Kwasi HA, Ngandu CB, Cohen E. Body size preferences for women and adolescent girls living in Africa: a mixed-methods systematic review. Public Health Nutr 2022; 25:738-759. [PMID: 33593472 PMCID: PMC9991778 DOI: 10.1017/s1368980021000768] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/01/2021] [Accepted: 02/10/2021] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To synthesise evidence on body size preferences for females living in Africa and the factors influencing these. DESIGN Mixed-methods systematic review including searches on Medline, CINHAL, ASSIA, Web of Science and PsycINFO (PROSPERO CRD42015020509). A sequential-explanatory approach was used to integrate quantitative and qualitative findings. SETTING Urban and rural Africa. PARTICIPANTS Studies of both sexes providing data on body size preferences for adolescent girls and women aged ≥10 years. RESULTS Seventy-three articles from twenty-one countries were included: fifty quantitative, fifteen qualitative and eight mixed methods. Most studies reported a preference for normal or overweight body sizes. Some studies of adolescent girls/young women indicated a preference for underweight. Factors influencing preferences for large(r) body sizes included: socio-demographic (e.g. education, rural residency), health-related (e.g. current BMI, pubertal status), psycho-social (e.g. avoiding HIV stigma) and socio-cultural factors (e.g. spouse's preference, social standing, cultural norms). Factors influencing preferences for slim(mer) body sizes included: socio-demographic (e.g. higher socioeconomic status, urban residency, younger age), health-related (e.g. health knowledge, being nulliparous), psycho-social (e.g. appearance, body size perception as overweight/obese) and socio-cultural factors (e.g. peer pressure, media). CONCLUSIONS Preference for overweight (not obese) body sizes among some African females means that interventions need to account for the array of factors that maintain these preferences. The widespread preference for normal weight is positive in public health terms, but the valorisation of underweight in adolescent girls/young women may lead to an increase in body dissatisfaction. Emphasis needs to be placed on education to prevent all forms of malnutrition.
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Affiliation(s)
- Rebecca Pradeilles
- School of Sport, Exercise and Health Sciences (SSEHS), Loughborough University, LoughboroughLE11 3TU, UK
| | - Michelle Holdsworth
- UMR MoISA (Montpellier Interdisciplinary Centre on Sustainable Agri-food Systems), (Univ Montpellier, CIRAD, CIHEAM-IAMM, INRAE, Institut Agro, IRD), Montpellier, France
| | | | - Ana Irache
- Warwick Medical School, University of Warwick, Coventry, UK
| | | | - Christian B Ngandu
- MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
| | - Emmanuel Cohen
- MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- UMR CNRS-MNHN 7206 « Eco-anthropologie », Musée de l’Homme, Paris, France
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Mariam SH. The Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) Pandemic: Are Africa's Prevalence and Mortality Rates Relatively Low? Adv Virol 2022; 2022:3387784. [PMID: 35256885 PMCID: PMC8898136 DOI: 10.1155/2022/3387784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/14/2022] [Accepted: 01/28/2022] [Indexed: 12/13/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the cause of coronavirus disease 19 (COVID-19), has been rapidly spreading since December 2019, and within a few months, it turned out to be a global pandemic. The disease affects primarily the lungs, but its pathogenesis spreads to other organs as well. However, its mortality rates vary, and in the majority of infected people, there are no serious consequences. Many factors including advanced age, preexisting health conditions, and genetic predispositions are believed to exacerbate outcomes of COVID-19. The virus contains several structural proteins including the spike (S) protein with subunits for binding, fusion, and internalization into host cells following interaction with host cell receptors and proteases (ACE2 and TMPRSS2, respectively) to cause the subsequent pathology. Although the pandemic has spread into all countries, most of Africa is thought of as having relatively less prevalence and mortality. Several hypotheses have been forwarded as reasons for this and include warmer weather conditions, vaccination with BCG (i.e., trained immunity), and previous malaria infection. From genetics or metabolic points of view, it has been proposed that most African populations could be protected to some degree because they lack some genetic susceptibility risk factors or have low-level expression of allelic variants, such as ACE2 and TMPRSS2 that are thought to be involved in increased infection risk or disease severity. The frequency of occurrence of α-1 antitrypsin (an inhibitor of a tissue-degrading protease, thereby protecting target host tissues including the lung) deficiency is also reported to be low in most African populations. More recently, infections in Africa appear to be on the rise. In general, there are few studies on the epidemiology and pathogenesis of the disease in African contexts, and the overall costs and human life losses due to the pandemic in Africa will be determined by all factors and conditions interacting in complex ways.
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Affiliation(s)
- Solomon H. Mariam
- Infectious Diseases Program, Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
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