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Palmer T, Leiva Granados R, Draper C, Norris SA, Batura N. Cost-effectiveness of a complex continuum of care intervention targeting women and children: protocol for an economic evaluation of the Bukhali trial in South Africa. BMJ Open 2024; 14:e080166. [PMID: 38740501 PMCID: PMC11097888 DOI: 10.1136/bmjopen-2023-080166] [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: 09/22/2023] [Accepted: 04/26/2024] [Indexed: 05/16/2024] Open
Abstract
INTRODUCTION As nearly two-thirds of women presenting at their first antenatal visit are either overweight or obese in urban South Africa, the preconception period is an opportunity to optimise health and offset transgenerational risk of both obesity and non-communicable diseases. This protocol describes the planned economic evaluation of an individually randomised controlled trial of a complex continuum of care intervention targeting women and children in Soweto, South Africa (Bukhali trial). METHODS AND ANALYSIS The economic evaluation of the Bukhali trial will be conducted as a within-trial analysis from both provider and societal perspectives. Incremental costs and health outcomes of the continuum of care intervention will be compared with standard care. The economic impact on implementing agencies (programme costs), healthcare providers, participants and their households will be estimated. Incremental cost-effectiveness ratios (ICERs) will be calculated in terms of cost per case of child adiposity at age years averted. Additionally, ICERs will also be reported in terms of cost per quality-adjusted life year gained. If Bukhali demonstrates effectiveness, we will employ a decision analytical model to examine the cost-effectiveness of the intervention over a child's lifetime. A Markov model will be used to estimate long-term health benefits, healthcare costs and cost-effectiveness. Probabilistic sensitivity analyses will be conducted to explore uncertainty and ensure robust results. An analysis will be conducted to assess the equity impact of the intervention, by comparing intervention impact within quintiles of socioeconomic status. ETHICS AND DISSEMINATION The Bukhali trial economic evaluation has ethical approval from the Human Ethics Research Committee of the University of the Witwatersrand, Johannesburg, South Africa (M240162). The results of the economic evaluation will be disseminated in a peer-reviewed journal and presented at a relevant international conference. TRIAL REGISTRATION NUMBER Pan African Clinical Trials Registry (PACTR201903750173871; https://pactr.samrc.ac.za).
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Affiliation(s)
- Tom Palmer
- Institute for Global Health, University College London, London, UK
| | | | - Catherine Draper
- MRC-Wits DPHRU, University of the Witwatersrand, Johannesburg, South Africa
| | - Shane A Norris
- MRC-Wits DPHRU, University of the Witwatersrand, Johannesburg, South Africa
- School of Human Development and Health, University of Southampton, Southampton, UK
| | - Neha Batura
- Institute for Global Health, University College London, London, UK
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Abera D, Larbie C, Abugri J, Ofosu M, Mutocheluh M, Dongsogo J. Prevalence and Predictors of Gestational Diabetes Mellitus in Sub-Saharan Africa: A 10-Year Systematic Review. Endocrinol Diabetes Metab 2024; 7:e00478. [PMID: 38597653 PMCID: PMC11005715 DOI: 10.1002/edm2.478] [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: 11/04/2023] [Revised: 01/18/2024] [Accepted: 02/23/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Gestational diabetes mellitus (GDM) remains a global public health problem, which affects the well-being of mothers and their children in sub-Saharan Africa (SSA). Studies conducted in different geographical areas provide varied results on its prevalence and predictors. Understanding the extent and predictors of GDM in SSA is important for developing effective interventions and policies. Thus, this review aimed to investigate the prevalence of GDM and its predictive factors in sub-Saharan Africa. METHODS We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards in this review. An extensive search of the PubMed, Web of Sciences and EMBASE databases was carried out covering papers from 2012 to 2022 to assess the prevalence and predictors of GDM. Microsoft Excel 2019 was utilised for study management. GraphPad Prism Version 8.0 and the MedCalc statistical software were employed for data analysis. The findings were analysed using textual descriptions, tables, forest plots and heat maps. RESULTS Using 30 studies with 23,760 participants that satisfied the inclusion criteria, the review found the overall prevalence of GDM in SSA to be 3.05% (1.85%-4.54%). History of preterm delivery, alcohol consumption, family history of diabetes, history of stillbirths, history of macrosomia, overweight or obesity and advanced mother age were all significant predictors of gestational diabetes. Additionally, various biomarkers such as haemoglobin, adiponectin, leptin, resistin, visfatin, vitamin D, triglycerides and dietary intake type were identified as significant predictors of GDM. CONCLUSION In sub-Saharan Africa, there is a high pooled prevalence of gestational diabetes mellitus. In the light of the predictors of GDM identified in this review, it is strongly recommended to implement early screening for women at risk of developing gestational diabetes during their pregnancy. This proactive approach is essential for enhancing the overall well-being of both mothers and children.
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Affiliation(s)
- Daniel Ataanya Abera
- Department of Laboratory Technology, Faculty of Health SciencesKumasi Technical UniversityKumasiGhana
- Department of Biochemistry and Biotechnology, Faculty of Bioscience, College of ScienceKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Christopher Larbie
- Department of Biochemistry and Biotechnology, Faculty of Bioscience, College of ScienceKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - James Abugri
- Department of Biochemistry and Forensic Sciences, School of Chemical and Biochemical SciencesC. K. Tedam University of Technology and Applied SciencesNavrongoGhana
| | - Mina Ofosu
- Department of Laboratory Technology, Faculty of Health SciencesKumasi Technical UniversityKumasiGhana
| | - Mohamed Mutocheluh
- Department of Clinical Microbiology, School of Medical ScienceKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Julius Dongsogo
- Department of Biochemistry, Faculty of BiosciencesUniversity for Development StudiesTamaleGhana
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Kolozali S, White SL, Norris S, Fasli M, van Heerden A. Explainable Early Prediction of Gestational Diabetes Biomarkers by Combining Medical Background and Wearable Devices: A Pilot Study With a Cohort Group in South Africa. IEEE J Biomed Health Inform 2024; 28:1860-1871. [PMID: 38345955 DOI: 10.1109/jbhi.2024.3361505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
This study aims to explore the potential of Internet of Things (IoT) devices and explainable Artificial Intelligence (AI) techniques in predicting biomarker values associated with GDM when measured 13-16 weeks prior to diagnosis. We developed a system that forecasts biomarkers such as LDL, HDL, triglycerides, cholesterol, HbA1c, and results from the Oral Glucose Tolerance Test (OGTT) including fasting glucose, 1-hour, and 2-hour post-load glucose values. These biomarker values are predicted based on sensory measurements collected around week 12 of pregnancy, including continuous glucose levels, short physical movement recordings, and medical background information. To the best of our knowledge, this is the first study to forecast GDM-associated biomarker values 13 to 16 weeks prior to the GDM screening test, using continuous glucose monitoring devices, a wristband for activity detection, and medical background data. We applied machine learning models, specifically Decision Tree and Random Forest Regressors, along with Coupled-Matrix Tensor Factorisation (CMTF) and Elastic Net techniques, examining all possible combinations of these methods across different data modalities. The results demonstrated good performance for most biomarkers. On average, the models achieved Mean Squared Error (MSE) between 0.29 and 0.42 and Mean Absolute Error (MAE) between 0.23 and 0.45 for biomarkers like HDL, LDL, cholesterol, and HbA1c. For the OGTT glucose values, the average MSE ranged from 0.95 to 2.44, and the average MAE ranged from 0.72 to 0.91. Additionally, the utilisation of CMTF with Alternating Least Squares technique yielded slightly better results (0.16 MSE and 0.07 MAE on average) compared to the well-known Elastic Net feature selection technique. While our study was conducted with a limited cohort in South Africa, our findings offer promising indications regarding the potential for predicting biomarker values in pregnant women through the integration of wearable devices and medical background data in the analysis. Nevertheless, further validation on a larger, more diverse cohort is imperative to substantiate these encouraging results.
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Norris SA, Zarowsky C, Murphy K, Ware LJ, Lombard C, Matjila M, Chivese T, Muhwava LS, Mutabazi JC, Harbron J, Fairall LR, Lambert E, Levitt N. Integrated health system intervention aimed at reducing type 2 diabetes risk in women after gestational diabetes in South Africa (IINDIAGO): a randomised controlled trial protocol. BMJ Open 2024; 14:e073316. [PMID: 38195169 PMCID: PMC10806811 DOI: 10.1136/bmjopen-2023-073316] [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: 03/02/2023] [Accepted: 11/27/2023] [Indexed: 01/11/2024] Open
Abstract
INTRODUCTION South Africa has a high prevalence of gestational diabetes mellitus (GDM; 15%) and many of these women (48%) progress to type 2 diabetes mellitus (T2DM) within 5 years post partum. A significant proportion (47%) of the women are not aware of their diabetes status after the index pregnancy, which may be in part to low postnatal diabetes screening rates. Therefore, we aim to evaluate a intervention that reduces the subsequent risk of developing T2DM among women with recent GDM. Our objectives are fourfold: (1) compare the completion of the nationally recommended 6-week postpartum oral glucose tolerance test (OGTT) between intervention and control groups; (2) compare the diabetes risk reduction between control and intervention groups at 12 months' post partum; (3) assess the process of implementation; and (4) assess the cost-effectiveness of the proposed intervention package. METHODS AND ANALYSES Convergent parallel mixed-methods study with the main component being a pragmatic, 2-arm individually randomised controlled trial, which will be carried out at five major referral centres and up to 26 well-baby clinics in the Western Cape and Gauteng provinces of South Africa. Participants (n=370) with GDM (with no prior history of either type 1 or type 2 diabetes) will be recruited into the study at 24-36 weeks' gestational age, at which stage first data collection will take place. Subsequent data collection will take place at 6-8 weeks after delivery and again at 12 months. The primary outcome for the trial is twofold: first, the completion of the recommended 2-hour OGTT at the well-baby clinics 6-8 weeks post partum, and second, a composite diabetes risk reduction indicator at 12 months. Process evaluation will assess fidelity, acceptability, and dose of the intervention. ETHICS AND DISSEMINATION Ethics approval has been granted from University of Cape Town (829/2016), University of the Witwatersrand, Johannesburg (M170228), University of Stellenbosch (N17/04/032) and the University of Montreal (2019-794). The results of the trial will be disseminated through publication in peer-reviewed journals and presentations to key South African Government stakeholders and health service providers. PROTOCOL VERSION 1 December 2022 (version #2). Any protocol amendments will be communicated to investigators, Human Ethics Research Committees, trial participants, and trial registries. TRIAL REGISTRATION NUMBER PAN African Clinical Trials Registry (https://pactr.samrc.ac.za) on 11 June 2018 (identifier PACTR201805003336174).
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Affiliation(s)
- Shane A Norris
- SAMRC Developmental Pathways for Health Research Unit, Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, South Africa
| | - Christina Zarowsky
- School of Public Health, University of Montreal, Montreal, Québec, Canada
| | - Katherine Murphy
- Faculty of Health Science, Department of Medicine, University of Cape Town, Rondebosch, South Africa
| | - Lisa Jayne Ware
- SAMRC Developmental Pathways for Health Research Unit, Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, South Africa
- Faculty of Health Sciences, DSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand Johannesburg, Johannesburg, South Africa
| | - Carl Lombard
- Biostatistics Unit, South African Medical Research Council, Tygerberg, South Africa
| | - Mushi Matjila
- Department of Obstetrics and Gynaecology, University of Cape Town, Cape Town, South Africa
| | - Tawanda Chivese
- Department of Population Medicine, College of Medicine, QU Health, Qatar University, Doha, Qatar
| | | | - Jean Claude Mutabazi
- Médecine sociale et préventive-Option: Santé Mondiale, University of Montreal, Montreal, Québec, Canada
| | | | | | | | - Naomi Levitt
- Department of Medicine, University of Cape Town, Rondebosch, South Africa
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Scheuer CM, Jensen DM, McIntyre HD, Ringholm L, Mathiesen ER, Nielsen CPK, Nolsöe RLM, Milbak J, Hillig T, Damm P, Overgaard M, Clausen TD. Applying WHO2013 diagnostic criteria for gestational diabetes mellitus reveals currently untreated women at increased risk. Acta Diabetol 2023; 60:1663-1673. [PMID: 37462764 PMCID: PMC10587026 DOI: 10.1007/s00592-023-02148-2] [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: 04/19/2023] [Accepted: 06/28/2023] [Indexed: 10/21/2023]
Abstract
AIMS To estimate the prevalence of gestational diabetes mellitus (GDM) in a Danish cohort comparing the current Danish versus the WHO2013 diagnostic criteria, and to evaluate adverse pregnancy outcomes among currently untreated women in the gap between the diagnostic thresholds. METHODS Diagnostic testing was performed by a 75 g oral glucose tolerance test (OGTT) at 24-28 weeks' gestation in a cohort of pregnant women. GDM diagnosis was based on the current Danish criterion (2-h glucose ≥ 9.0 mmol/L, GDMDK) and on the WHO2013 criteria (fasting ≥ 5.1, 1 h ≥ 10.0 or 2 h glucose ≥ 8.5 mmol/L, GDMWHO2013). Currently untreated women fulfilling the WHO2013 but not the Danish diagnostic criteria were defined as New-GDM-women (GDMWHO2013-positive and GDMDK-negative). Adverse outcomes risks were calculated using logistic regression. RESULTS OGTT was completed by 465 women at a median of 25.7 weeks' gestation. GDMDK prevalence was 2.2% (N = 10) and GDMWHO2013 21.5% (N = 100). New-GDM was present in 19.4% (N = 90), of whom 90.0% had elevated fasting glucose. Pregnancies complicated by New-GDM had higher frequencies of pregnancy-induced hypertension (13.3% vs 4.1%, p = 0.002), large-for-gestational-age infants (22.2% vs 9.9%, p = 0.004), neonatal hypoglycaemia (8.9% vs 1.9%, p = 0.004) and neonatal intensive care unit admission (16.7% vs 5.8%, p = 0.002) compared to pregnancies without GDM. CONCLUSIONS GDM prevalence increased tenfold when applying WHO2013 criteria in a Danish population, mainly driven by higher fasting glucose levels. Untreated GDM in the gap between the current Danish and the WHO2013 diagnostic criteria resulted in higher risks of adverse pregnancy outcomes.
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Affiliation(s)
- Cathrine Munk Scheuer
- Department of Gynaecology and Obstetrics, Nordsjællands Hospital Hillerød, Hillerød, Denmark.
| | - Dorte Møller Jensen
- Steno Diabetes Center Odense, Odense University Hospital, Odense, Denmark
- Department of Gynecology and Obstetrics, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - H David McIntyre
- Mater Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Lene Ringholm
- Department of Endocrinology and Metabolism, Center for Pregnant Women with Diabetes, Rigshospitalet, Copenhagen, Denmark
| | - Elisabeth Reinhardt Mathiesen
- Department of Endocrinology and Metabolism, Center for Pregnant Women with Diabetes, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Julie Milbak
- Department of Gynaecology and Obstetrics, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Thore Hillig
- Department of Clinical Biochemistry, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Peter Damm
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Center for Pregnant Women with Diabetes, Department of Obstetrics, Rigshospitalet, Copenhagen, Denmark
| | - Martin Overgaard
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark
| | - Tine Dalsgaard Clausen
- Department of Gynaecology and Obstetrics, Nordsjællands Hospital Hillerød, Hillerød, Denmark
- Center for Pregnant Women with Diabetes, Department of Obstetrics, Rigshospitalet, Copenhagen, Denmark
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Bengtson AM, Madlala H, Matjila MJ, Levitt N, Goedecke JH, Cu-Uvin S, McGarvey ST, Werner EF, Myer L. Associations of HIV and antiretroviral therapy with gestational diabetes in South Africa. AIDS 2023; 37:2069-2079. [PMID: 37534696 PMCID: PMC10538400 DOI: 10.1097/qad.0000000000003678] [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] [Indexed: 08/04/2023]
Abstract
OBJECTIVE To estimate associations of HIV status and antiretroviral (ART) regimen with gestational diabetes (GDM) and postpartum glucose metabolism. DESIGN Prospective cohort study. METHODS We enrolled pregnant persons with HIV (PWH) and without HIV in Cape Town, South Africa who were at least 18 years of age at 24-28 weeks' gestation and followed up to 26 months postpartum. Participants were tested for GDM in pregnancy and for diabetes postpartum using a 75 g 2 h oral glucose tolerance test (OGTT) and diagnosed via WHO criteria. We estimated associations of HIV status and ART regime [efavirenz (EFV) versus dolutegravir (DTG)] with GDM and postpartum impaired glucose metabolism using multivariable log binomial or linear regression models. RESULTS Among 397 participants [median age 30 (interquartile range (IQR) 25-34; n = 198 without HIV, n = 199 PWH], the prevalence of GDM was 6% (9 PWH versus 3% without HIV). In multivariable analyses, PWH were at higher risk of GDM [risk ratio (RR) 3.9, 95% confidence interval (CI) 1.4-10.7] after adjustment for prepregnancy BMI and other confounders. GDM risk did not differ by ART regimen (unadjusted prevalence 8.1% DTG versus 5.6% EFV, adjusted RR 1.1, 95% CI 0.2-6.6). Few participants had diabetes, impaired glucose tolerance (IGT), or impaired fasting glucose postpartum ( n = 13, 6%) with no differences by HIV or ART status. CONCLUSION In a setting of universal GDM testing, PWH had an increased risk of impaired glucose metabolism during pregnancy but not postpartum. Among PWH, GDM risk was similar regardless of EFV or DTG use. Given concerns about DTG and weight gain, diabetes risk should continue to be monitored.
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Affiliation(s)
- Angela M Bengtson
- Department of Epidemiology and International Health Institute, Brown University School of Public Health, Providence, Rhode Island, USA
| | - Hlengiwe Madlala
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town
| | - Mushi J Matjila
- Department of Obstetrics & Gynaecology, University of Cape Town and New Somerset Hospital
| | - Naomi Levitt
- Chronic Disease Initiative for Africa, Department of Medicine
| | - Julia H Goedecke
- Health through Physical Activity, Lifestyle and Sport Research Centre, Division of Physiological Sciences, Department of Human Biology, University of Cape Town
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa
| | - Susan Cu-Uvin
- Department of Obstetrics and Gynecology and Medicine, Warren Alpert School of Medicine, Brown University, Providence, Rhode Island
| | - Stephen T McGarvey
- Department of Epidemiology and International Health Institute, Brown University School of Public Health, Providence, Rhode Island, USA
| | - Erika F Werner
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Landon Myer
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town
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Murphy K, Berk J, Muhwava-Mbabala L, Booley S, Harbron J, Ware L, Norris S, Zarowsky C, Lambert EV, Levitt NS. Using the COM-B model and Behaviour Change Wheel to develop a theory and evidence-based intervention for women with gestational diabetes (IINDIAGO). BMC Public Health 2023; 23:894. [PMID: 37189143 DOI: 10.1186/s12889-023-15586-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/02/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND In South Africa, the prevalence of gestational diabetes (GDM) is growing, concomitant with the dramatically increasing prevalence of overweight/obesity among women. There is an urgent need to develop tailored interventions to support women with GDM to mitigate pregnancy risks and to prevent progression to type 2 diabetes post-partum. The IINDIAGO study aims to develop and evaluate an intervention for disadvantaged GDM women attending three large, public-sector hospitals for antenatal care in Cape Town and Soweto, SA. This paper offers a detailed description of the development of a theory-based behaviour change intervention, prior to its preliminary testing for feasibility and efficacy in the health system. METHODS The Behaviour Change Wheel (BCW) and the COM-B model of behaviour change were used to guide the development of the IINDIAGO intervention. This framework provides a systematic, step-by-step process, starting with a behavioural analysis of the problem and making a diagnosis of what needs to change, and then linking this to intervention functions and behaviour change techniques to bring about the desired result. Findings from primary formative research with women with GDM and healthcare providers were a key source of information for this process. RESULTS Key objectives of our planned intervention were 1) to address women's evident need for information and psychosocial support by positioning peer counsellors and a diabetes nurse in the GDM antenatal clinic, and 2) to offer accessible and convenient post-partum screening and counselling for sustained behaviour change among women with GDM by integrating follow-up into the routine immunisation programme at the Well Baby clinic. The peer counsellors and the diabetes nurse were trained in patient-centred, motivational counselling methods. CONCLUSIONS This paper offers a rich description and analysis of designing a complex intervention tailored to the challenging contexts of urban South Africa. The BCW was a valuable tool to use in designing our intervention and tailoring its content and format to our target population and local setting. It provided a robust and transparent theoretical foundation on which to develop our intervention, assisted us in making the hypothesised pathways for behaviour change explicit and enabled us to describe the intervention in standardised, precisely defined terms. Using such tools can contribute to improving rigour in the design of behavioural change interventions. TRIAL REGISTRATION First registered on 20/04/2018, Pan African Clinical Trials Registry (PACTR): PACTR201805003336174.
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Affiliation(s)
- Katherine Murphy
- Department of Medicine, Chronic Disease Initiative for Africa (CDIA), University of Cape Town, Cape Town, South Africa.
| | - Jamie Berk
- Department of Medicine, Chronic Disease Initiative for Africa (CDIA), University of Cape Town, Cape Town, South Africa
| | - Lorrein Muhwava-Mbabala
- Department of Medicine, Chronic Disease Initiative for Africa (CDIA), University of Cape Town, Cape Town, South Africa
| | - Sharmilah Booley
- Department of Human Biology, Division of Human Nutrition, University of Cape Town, Cape Town, South Africa
| | - Janetta Harbron
- Department of Human Biology, Division of Human Nutrition, University of Cape Town, Cape Town, South Africa
| | - Lisa Ware
- Department of Paediatrics, MRC/WITS Developmental Pathways for Health Research Unit (DPHRU), University of the Witwatersrand, Johannesburg, South Africa
| | - Shane Norris
- Department of Paediatrics, MRC/WITS Developmental Pathways for Health Research Unit (DPHRU), University of the Witwatersrand, Johannesburg, South Africa
- South African Medical Research Council (SAMRC), Cape Town, South Africa
| | - Christina Zarowsky
- Public Health Research Centre (CReSP - Centre de recherche en santé publique de l'Université de Montréal et du CIUSSS de Centre-Sud de Montréal), Montreal, Canada
- Department of Social and Preventive Medicine, School of Public Health, University of Montreal, Montreal, Canada
- School of Public Health, University of the Western Cape, Cape Town, South Africa
| | - Estelle V Lambert
- Department of Human Biology, Division of Physiological Sciences, Faculty of Health Sciences, Research Centre for Health Through Physical Activity, Lifestyle and Sport (HPALS), University of Cape Town, Cape Town, South Africa
| | - Naomi S Levitt
- Department of Medicine, Chronic Disease Initiative for Africa (CDIA), University of Cape Town, Cape Town, South Africa
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Musa E, Salazar-Petres E, Arowolo A, Levitt N, Matjila M, Sferruzzi-Perri AN. Obesity and gestational diabetes independently and collectively induce specific effects on placental structure, inflammation and endocrine function in a cohort of South African women. J Physiol 2023; 601:1287-1306. [PMID: 36849131 DOI: 10.1113/jp284139] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/19/2023] [Indexed: 03/01/2023] Open
Abstract
Maternal obesity and gestational diabetes mellitus (GDM) are associated with insulin resistance and health risks for mother and offspring. Obesity is also characterized by low-grade inflammation, which in turn, impacts insulin sensitivity. The placenta secretes inflammatory cytokines and hormones that influence maternal glucose and insulin handling. However, little is known about the effect of maternal obesity, GDM and their interaction, on placental morphology, hormones and inflammatory cytokines. In a South African cohort of non-obese and obese pregnant women with and without GDM, this study examined placental morphology using stereology, placental hormone and cytokine expression using real-time PCR, western blotting and immunohistochemistry, and circulating TNFα and IL-6 concentrations using ELISA. Placental expression of endocrine and growth factor genes was not altered by obesity or GDM. However, LEPTIN gene expression was diminished, syncytiotrophoblast TNFα immunostaining elevated and stromal and fetal vessel IL-6 staining reduced in the placenta of obese women in a manner that was partly influenced by GDM status. Placental TNFα protein abundance and maternal circulating TNFα concentrations were reduced in GDM. Both maternal obesity and, to a lesser extent, GDM were accompanied by specific changes in placental morphometry. Maternal blood pressure and weight gain and infant ponderal index were also modified by obesity and/or GDM. Thus, obesity and GDM have specific impacts on placental morphology and endocrine and inflammatory states that may relate to pregnancy outcomes. These findings may contribute to developing placenta-targeted treatments that improve mother and offspring outcomes, which is particularly relevant given increasing rates of obesity and GDM worldwide. KEY POINTS: Rates of maternal obesity and gestational diabetes (GDM) are increasing worldwide, including in low-middle income countries (LMIC). Despite this, much of the work in the field is conducted in higher-income countries. In a well-characterised cohort of South African women, this study shows that obesity and GDM have specific impacts on placental structure, hormone production and inflammatory profile. Moreover, such placental changes were associated with pregnancy and neonatal outcomes in women who were obese and/or with GDM. The identification of specific changes in the placenta may help in the design of diagnostic and therapeutic approaches to improve pregnancy and neonatal outcomes with particular significant benefit in LMICs.
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Affiliation(s)
- Ezekiel Musa
- Division of Endocrinology, Department of Medicine, University of Cape Town, Cape Town, South Africa
- Department of Internal Medicine, Kaduna State University, Kaduna, Nigeria
| | - Esteban Salazar-Petres
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Afolake Arowolo
- Hair and Skin Research Laboratory, Division of Dermatology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Naomi Levitt
- Division of Endocrinology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Mushi Matjila
- Department of Obstetrics and Gynaecology, University of Cape Town, Cape Town, South Africa
| | - Amanda N Sferruzzi-Perri
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
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9
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van Heerden A, Kolozali Ş, Norris SA. Feasibility and acceptability of continuous at-home glucose monitoring during pregnancy: a mixed-methods pilot study. SOUTH AFRICAN JOURNAL OF CLINICAL NUTRITION 2022. [DOI: 10.1080/16070658.2022.2114408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Alastair van Heerden
- Centre for Community Based Research, Human Sciences Research Council, Pietermaritzburg, South Africa
- SAMRC Developmental Pathways for Health Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Şefki Kolozali
- School of Computer Science and Electronic Engineering, University of Essex, Essex, United Kingom
| | - Shane A Norris
- SAMRC Developmental Pathways for Health Research Unit, University of the Witwatersrand, Johannesburg, South Africa
- School of Health and Human Development, University of Southampton, Southampton, United Kingom
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10
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Meyrueix LP, Gharaibeh R, Xue J, Brouwer C, Jones C, Adair L, Norris SA, Ideraabdullah F. Gestational diabetes mellitus placentas exhibit epimutations at placental development genes. Epigenetics 2022; 17:2157-2177. [DOI: 10.1080/15592294.2022.2111751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
| | - Raad Gharaibeh
- Department of Bioinformatics and Genomics, University of North Carolina, Charlotte, NC, USA
- Bioinformatics Service Division, University of North Carolina, Charlotte, NC, USA
- Department of Medicine, Division of Gastroenterology, University of Florida, Gainesville, FL, USA
| | - Jing Xue
- Genetics Department, University of North Carolina, Chapel Hill, NC, USA
| | - Cory Brouwer
- Department of Bioinformatics and Genomics, University of North Carolina, Charlotte, NC, USA
- Bioinformatics Service Division, University of North Carolina, Charlotte, NC, USA
| | - Corbin Jones
- Department of Biology and Integrative Program for Biological and Genome Sciences, University of North Carolina, Chapel Hill, NC, USA
| | - Linda Adair
- Nutrition Department, University of North Carolina, Chapel Hill, NC, USA
| | - Shane A. Norris
- SAMRC Developmental Health Pathways for Health Research Unit, University of Witwatersrand, Johannesburg, South Africa
| | - Folami Ideraabdullah
- Nutrition Department, University of North Carolina, Chapel Hill, NC, USA
- Genetics Department, University of North Carolina, Chapel Hill, NC, USA
- SAMRC Developmental Health Pathways for Health Research Unit, University of Witwatersrand, Johannesburg, South Africa
- Nutrition Research Institute, University of North Carolina, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
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11
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Prioreschi A, Koethe JR, Aronoff DM, Goldstein JA, Norris SA. Relationships between adiposity distribution and metabolic health in preconception women in South Africa. Obes Sci Pract 2022; 8:500-509. [PMID: 35949276 PMCID: PMC9358758 DOI: 10.1002/osp4.570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 11/24/2022] Open
Abstract
Objective Adipose tissue is a central regulator of metabolic health and a contributor to systemic inflammation. Patterns of adiposity deposition are important to understand for optimizing health. This study aimed to asses relationships between adiposity deposition and metabolic and inflammatory biomarkers in South African women prior to conception. Methods Non-pregnant, healthy women (n = 298) were recruited for this cross-sectional study via home visits. Body composition was measured by Dual X-ray Absorptiometry. Inflammation markers C-reactive protein (CRP), alpha1-acid glycoprotein (AGP), hemoglobin A1c (HbA1c), and blood pressure were scored according to risk. A summative metabolic health risk score was created for women with obesity. Generalized regression models assessed relationships between adiposity deposition and outcomes with adjustment for potential confounders. Results Obesity was present in 22% of women (mean age = 20.93 years). Fat mass index was associated with inflammation and metabolic health risk (β = 0.58; p < 0.01). Visceral fat, trunk:limb ratio, android:gynoid ratio, body mass index, weight, and waist circumference were positively associated with CRP, AGP, and metabolic health risk (p < 0.01). Weight was associated with Hba1c (β < 0.01; p < 0.05). Participants with obesity and low metabolic health risk had lower fat mass index and visceral fat than participants with obesity and higher metabolic health risk. Conclusions Black South African women accumulated excess adipose tissue in abdominal regions. While fat mass and body mass were associated with inflammation and metabolic health risk, women with obesity and with lower fat mass index and lower visceral adipose tissue were metabolically protected. Identification of women at risk for metabolic disease preconception could help ensure future healthy pregnancies and prevent transference of risk to offspring.
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Affiliation(s)
- Alessandra Prioreschi
- SAMRC/Wits Developmental Pathways for Health Research UnitDepartment of PaediatricsFaculty of Health SciencesSchool of Clinical MedicineUniversity of the WitwatersrandJohannesburgSouth Africa
| | - John R. Koethe
- Division of Infectious DiseasesDepartment of MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
- Vanderbilt Institute for Global HealthVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - David M. Aronoff
- SAMRC/Wits Developmental Pathways for Health Research UnitDepartment of PaediatricsFaculty of Health SciencesSchool of Clinical MedicineUniversity of the WitwatersrandJohannesburgSouth Africa
- Division of Infectious DiseasesDepartment of MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
- Department of Pathology, Microbiology and ImmunologyVanderbilt University Medical CenterNashvilleTennesseeUSA
- Department of Obstetrics and GynecologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Jeffrey A. Goldstein
- Department of PathologyFeinberg School of MedicineNorthwestern UniversityChicagoIllinoisUSA
| | - Shane A. Norris
- SAMRC/Wits Developmental Pathways for Health Research UnitDepartment of PaediatricsFaculty of Health SciencesSchool of Clinical MedicineUniversity of the WitwatersrandJohannesburgSouth Africa
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12
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Coetzee A, Hall DR, Conradie M. Hyperglycemia First Detected in Pregnancy in South Africa: Facts, Gaps, and Opportunities. FRONTIERS IN CLINICAL DIABETES AND HEALTHCARE 2022; 3:895743. [PMID: 36992779 PMCID: PMC10012101 DOI: 10.3389/fcdhc.2022.895743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/01/2022] [Indexed: 06/19/2023]
Abstract
This review contextualizes hyperglycemia in pregnancy from a South-African perspective. It aims to create awareness of the importance of hyperglycemia in pregnancy in low-middle-income countries. We address unanswered questions to guide future research on sub-Saharan African women with hyperglycemia first detected in pregnancy (HFDP). South African women of childbearing age have the highest prevalence of obesity in sub-Saharan Africa. They are predisposed to Type 2 diabetes (T2DM), the leading cause of death in South African women. T2DM remains undiagnosed in many African countries, with two-thirds of people living with diabetes unaware. With the South African health policy's increased focus on improving antenatal care, women often gain access to screening for non-communicable diseases for the first time in pregnancy. While screening practices and diagnostic criteria for gestational diabetes mellitus (GDM) differ amongst geographical areas in South Africa (SA), hyperglycemia of varying degrees is often first detected in pregnancy. This is often erroneously ascribed to GDM, irrespective of the degree of hyperglycemia and not overt diabetes. T2DM and GDM convey a graded increased risk for the mother and fetus during and after pregnancy, with cardiometabolic risk accumulating across the lifespan. Resource limitations and high patient burden have hampered the opportunity to implement accessible preventative care in young women at increased risk of developing T2DM in the broader public health system in SA. All women with HFDP, including those with true GDM, should be followed and undergo glucose assessment postpartum. In SA, studies conducted early postpartum have noted persistent hyperglycemia in a third of women after GDM. Interpregnancy care is advantageous and may attain a favourable metabolic legacy in these young women, but the yield of return following delivery is suboptimal. We review the current best evidence regarding HFDP and contextualize the applicability in SA and other African or low-middle-income countries. The review identifies gaps and shares pragmatic solutions regarding clinical factors that may improve awareness, identification, diagnosis, and management of women with HFDP.
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Affiliation(s)
- Ankia Coetzee
- Department of Medicine, Division of Endocrinology Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
| | - David R. Hall
- Department of Obstetrics and Gynecology, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
| | - Magda Conradie
- Department of Medicine, Division of Endocrinology Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
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13
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Norris SA, Draper CE, Prioreschi A, Smuts CM, Ware LJ, Dennis C, Awadalla P, Bassani D, Bhutta Z, Briollais L, Cameron DW, Chirwa T, Fallon B, Gray CM, Hamilton J, Jamison J, Jaspan H, Jenkins J, Kahn K, Kengne AP, Lambert EV, Levitt N, Martin MC, Ramsay M, Roth D, Scherer S, Sellen D, Slemming W, Sloboda D, Szyf M, Tollman S, Tomlinson M, Tough S, Matthews SG, Richter L, Lye S. Building knowledge, optimising physical and mental health and setting up healthier life trajectories in South African women ( Bukhali): a preconception randomised control trial part of the Healthy Life Trajectories Initiative (HeLTI). BMJ Open 2022; 12:e059914. [PMID: 35450913 PMCID: PMC9024255 DOI: 10.1136/bmjopen-2021-059914] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/25/2022] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION South Africa's evolving burden of disease is challenging due to a persistent infectious disease, burgeoning obesity, most notably among women and rising rates of non-communicable diseases (NCDs). With two thirds of women presenting at their first antenatal visit either overweight or obese in urban South Africa (SA), the preconception period is an opportunity to optimise health and offset transgenerational risk of both obesity and NCDs. METHODS AND ANALYSIS Bukhali is the first individual randomised controlled trial in Africa to test the efficacy of a complex continuum of care intervention and forms part of the Healthy Life Trajectories Initiative (HeLTI) consortium implementing harmonised trials in Canada, China, India and SA. Starting preconception and continuing through pregnancy, infancy and childhood, the intervention is designed to improve nutrition, physical and mental health and health behaviours of South African women to offset obesity-risk (adiposity) in their offspring. Women aged 18-28 years (n=6800) will be recruited from Soweto, an urban-poor area of Johannesburg. The primary outcome is dual-energy X-ray absorptiometry derived fat mass index (fat mass divided by height2) in the offspring at age 5 years. Community health workers will deliver the intervention randomly to half the cohort by providing health literacy material, dispensing a multimicronutrient supplement, providing health services and feedback, and facilitating behaviour change support sessions to optimise: (1) nutrition, (2) physical and mental health and (3) lay the foundations for healthier pregnancies and early child development. ETHICS AND DISSEMINATION Ethical approval has been obtained from the Human Ethics Research Committee University of the Witwatersrand, Johannesburg, South Africa (M1811111), the University of Toronto, Canada (19-0066-E) and the WHO Ethics Committee (ERC.0003328). Data and biological sample sharing policies are consistent with the governance policy of the HeLTI Consortium (https://helti.org) and South African government legislation (POPIA). The recruitment and research team will obtain informed consent. TRIAL REGISTRATION This trial is registered with the Pan African Clinical Trials Registry (https://pactr.samrc.ac.za) on 25 March 2019 (identifier: PACTR201903750173871). PROTOCOL VERSION 20 March 2022 (version #4). Any protocol amendments will be communicated to investigators, Institutional Review Board (IRB)s, trial participants and trial registries.
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Affiliation(s)
- Shane A Norris
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa
- Global Health Research Institute, School of Human Development and Health, University of Southampton, Southampton, UK
| | - Catherine E Draper
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa
| | - Alessandra Prioreschi
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa
| | - C M Smuts
- Centre of Excellence of Nutrition, North-West University, Potchefstroom, South Africa
| | - Lisa Jayne Ware
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa
- DSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa
| | - CindyLee Dennis
- Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronton, Ontario, Canada
| | - Philip Awadalla
- Department of Molecular Genetics, Ontario Institute for Cancer Research, University of Toronto, Toronto, Ontario, Canada
| | - D Bassani
- Centre for Global Child Health, SickKids Research Institute, Toronto, Ontario, Canada
| | - Zulfiqar Bhutta
- Centre for Global Child Health, SickKids Research Institute, Toronto, Ontario, Canada
- Institute for Global Health and Development, Aga Khan University, Karachi, Pakistan
| | | | - D William Cameron
- Medicine, Division of Infectious Diseases, Ottawa Hospital General Campus, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Tobias Chirwa
- School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
| | - B Fallon
- Factor-Inwentash Faculty of Social Work, University of Toronto, Toronto, Ontario, Canada
| | - C M Gray
- Division of Molecular Biology and Human Genetics, University of Stellenbosch, Stellenbosch, South Africa
- Division of Immunology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch, South Africa
| | - Jill Hamilton
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - J Jamison
- Community Services, Red River College, Winnipeg, Manitoba, Canada
| | - Heather Jaspan
- Division of Immunology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch, South Africa
| | - Jennifer Jenkins
- Department of Applied Psychology and Human Development, University of Toronto, Toronto, Ontario, Canada
| | - Kathleen Kahn
- School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
- SAMRC Rural Public Health and Health Transitions Research Unit (Agincourt), Uinversity of the Witwatersrand, Johannesburg, South Africa
| | - A P Kengne
- Non-communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Estelle V Lambert
- Division of Exercise Science and Sports Medicine, University of Cape Town, Rondebosch, South Africa
| | - Naomi Levitt
- Chronic Diseases Initiative for Africa, University of Cape Town, Cape Town, South Africa
| | | | - Michele Ramsay
- Sydney Brenner Institute for Molecular Bioscience, University of the Witwatersrand, Johannesburg, South Africa
| | - Daniel Roth
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Stephen Scherer
- The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Daniel Sellen
- Department of Nutritional Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Wiedaad Slemming
- Department of Paediatrics, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa
| | - Deborah Sloboda
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - M Szyf
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Stephen Tollman
- School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
- SAMRC Rural Public Health and Health Transitions Research Unit (Agincourt), Uinversity of the Witwatersrand, Johannesburg, South Africa
| | - Mark Tomlinson
- Institute for Life Course Health Research, University of Stellenbosch, Cape Town, South Africa
| | - Suzanne Tough
- Department of Paediatrics, Alberta Children's Hospital Research Institute, Calgary, Alberta, Canada
| | - Stephen G Matthews
- Lunenfeld-Tanenbaum Research Institute, Toronto, Ontario, Canada
- Department of Physiology, Obstetrics & Gynaecology and Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Linda Richter
- DSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa
| | - Stephen Lye
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa
- Lunenfeld-Tanenbaum Research Institute, Toronto, Ontario, Canada
- Department of Physiology, Obstetrics & Gynaecology and Medicine, University of Toronto, Toronto, Ontario, Canada
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14
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Nicolaou V, Soepnel L, Huddle K, Klipstein-Grobusch K, Levitt NS, Norris SA. Cardiometabolic outcomes of women exposed to hyperglycaemia first detected in pregnancy at 3-6 years post-partum in an urban South African setting. PLoS One 2022; 17:e0263529. [PMID: 35139085 PMCID: PMC8827431 DOI: 10.1371/journal.pone.0263529] [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: 08/18/2021] [Accepted: 01/20/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Hyperglycaemia first detected during pregnancy(HFDP) has far-reaching maternal consequences beyond the pregnancy. Our study evaluated the cardiometabolic outcomes in women with prior HFDP versus women without HFDP 3-6 years post-partum in urban South Africa. DESIGN AND METHODS A prospective cohort study was performed of 103 black African women with prior HFDP and 101 without HFDP, 3-6 years post-partum at Chris Hani Baragwanath Academic Hospital, Soweto. Index pregnancy data was obtained from medical records. Post-partum, participants were re-evaluated for anthropometric measurements, body composition utilizing dual energy X-ray absorptiometry(DXA) and biochemical analysis (two-hour 75gm OGTT fasting insulin, lipids, creatinine levels and glucose levels). Cardiovascular risk was assessed by Framingham risk score(FRS). Carotid intima media thickness(cIMT) was used as a surrogate marker for subclinical atherosclerosis. Factors associated with progression to cardiometabolic outcomes were assessed using multivariable logistic and linear regression models. RESULTS Forty-six(45.1%) HFDP women progressed to diabetes compared to 5(4.9%) in non HFDP group(p<0.001); only 20(43.4%) were aware of their diabetic status in the whole group. The odds(OR, 95% confidence interval(CI)) of progressing to type 2 diabetes(T2DM) and metabolic syndrome(MetS) after correcting for confounders in the HFDP group was 10.5(95% CI 3.7-29.5) and 6.3(95%CI 2.2-18.1), respectively. All visceral fat indices were found to be significantly higher in the HFDP group after adjusting for baseline body mass index. Ten-year estimated cardiovascular risk(FRS) and mean cIMT was statistically higher in the HFDP group(8.46 IQR 4.9-14.4; 0.48 mm IQR 0.44-0.53 respectively) compared to the non-HFDP group(3.48 IQR 2.1-5.7; 0.46mm IQR 0.42-0.50) respectively and this remained significant for FRS but was attenuated for cIMT after correcting for confounders. HIV did not play a role in progression to any of these outcomes. CONCLUSION Women with a history of HFDP have a higher risk of cardiometabolic conditions within 6 years post-partum in an urban sub-Saharan African setting.
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Affiliation(s)
- Veronique Nicolaou
- Faculty of Health Sciences, SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- Faculty of Health Sciences, Department of Internal Medicine, Chris Hani Baragwanath Academic Hospital, University of Witwatersrand, Johannesburg, South Africa
| | - Larske Soepnel
- Faculty of Health Sciences, SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Kenneth Huddle
- Faculty of Health Sciences, Department of Internal Medicine, Chris Hani Baragwanath Academic Hospital, University of Witwatersrand, Johannesburg, South Africa
| | - Kerstin Klipstein-Grobusch
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Faculty of Health Sciences, Division of Epidemiology and Biostatistics, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
| | - Naomi S. Levitt
- Faculty of Health Sciences, Chronic Disease Initiative for Africa, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Shane A. Norris
- Faculty of Health Sciences, SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Johannesburg, South Africa
- Global Health Research Institute, School of Human Development and Health, University of Southampton, Southampton, United Kingdom
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15
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The impact of maternal hyperglycaemia first detected in pregnancy on offspring blood pressure in Soweto, South Africa. J Hypertens 2022; 40:969-977. [PMID: 35142740 DOI: 10.1097/hjh.0000000000003102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The long-term consequences for offspring born to mothers with hyperglycaemia first detected in pregnancy (HFDP) are not yet well understood and its influence on childhood blood pressure has not previously been assessed in sub-Saharan Africa. OBJECTIVE The objective of this study was to evaluate the association between maternal HFDP and offspring blood pressure in 3 to 6-year-old children in Soweto, South Africa. METHODS Oscillometric blood pressure was measured in 189 children born to mothers with and without HFDP diagnosed by 75 g 2-h oral glucose tolerance test. The 2017 AAP Guidelines for Childhood Hypertension were used as reference standard, and the term 'elevated blood pressure' referred to blood pressure readings above the 90th percentile for age, height and sex. The association between maternal HFDP and offspring blood pressure was analysed using multivariable linear regression. RESULTS Elevated blood pressure was identified in 49.7% of children. Maternal hyperglycaemia was not associated with offspring blood pressure when adjusted for offspring age, height and sex (SBP: 0.199, P = 0.888; DBP: 0.185, P = 0.837) or after multivariable adjustment (SBP: -0.286, P = 0.854; DBP: 0.215, P = 0.833). In the full model for SBP, child BMI age z-score was a significant predictor of blood pressure at 3-6 years (1.916, P = 0.008). CONCLUSION Although maternal HFDP was not associated with childhood blood pressure at 3-6 years, the prevalence of elevated blood pressure in this group of preschool-aged children is concerning. Future research is needed to further evaluate childhood obesity as a modifiable risk factor to reduce hypertension and cardiovascular risk in an African setting.
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Dorsamy V, Bagwandeen C, Moodley J. The prevalence, risk factors and outcomes of anaemia in South African pregnant women: a systematic review and meta-analysis. Syst Rev 2022; 11:16. [PMID: 35078528 PMCID: PMC8789334 DOI: 10.1186/s13643-022-01884-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 01/09/2022] [Indexed: 11/10/2022] Open
Abstract
BackgroundAnaemia is associated with maternal and perinatal morbidity and mortality. The pooled prevalence of anaemia in the South African (SA) pregnant population was ascertained by systematically reviewing available literature. Severity, risk factors (HIV, tuberculosis, race, province, year of study), maternal morbidity and mortality (hypertensive disorders of pregnancy), birth outcomes (including low birth weight) and supplementation during pregnancy were also described.MethodsEligible studies reported on haemoglobin concentration or prevalence of anaemia in a SA pregnant population and were available in full text. Case-control and estimation studies were excluded with no restriction on the date of publication. PubMed, CINAHL, EMBASE, EBSCO, Ovid maternity and infant care databases, Cochrane Database of Systematic Reviews, Web of Science and SCOPUS were searched, using the keywords 'anaemia', 'haemoglobin', 'pregnancy', 'South Africa'. Risk of bias was conducted using the Hoy tool and the Doi plot and LFK ratio. Overall study quality was assessed using the GRADE tool. Due to heterogeneity amongst studies subgroup analyses were performed (random effects and quality effects model) using MetaXL addon tool for Microsoft Excel.ResultsThe initial search yielded 7010 articles and 26 were selected for inclusion. Twenty studies were cross-sectional, three were longitudinal and one a randomised control trial. Studies ranged in publication year from 1969 to 2020. The pooled prevalence of anaemia in pregnant women in SA was determined to be 31% (95% CI, 23-40%). Hypertensive disorders of pregnancy and low birth weight were associated with anaemia. While iron deficiency was reported as the main cause, other risk factors included HIV and other infections.DiscussionLimitationsThere was limited data reporting on prevalence of anaemia and direct maternal and foetal outcomes. Heterogeneity amongst studies was not explained by subgroup analysis. Majority of cross-sectional study designs reduced the ability to infer causality.InterpretationWhile the prevalence of anaemia remains high and of concern, risk factors are varied. Iron deficiency is still common but the presence of comorbidities also contributes to anaemia and should not be ignored. More longitudinal research into associations between anaemia and birth outcomes is needed due to a lack of available evidence.Systematic review registrationPROSPERO 2020: CRD42020157191.
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Affiliation(s)
- Vinogrin Dorsamy
- Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - Chauntelle Bagwandeen
- Department of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Jagidesa Moodley
- Women's Health and HIV Research Group, School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa
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17
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Soepnel LM, Nicolaou V, Draper CE, Levitt NS, Klipstein-Grobusch K, Norris SA. Cognitive and Motor Development in 3- to 6-Year-Old Children Born to Mothers with Hyperglycaemia First Detected in Pregnancy in an Urban African Population. Matern Child Health J 2022; 26:1328-1338. [PMID: 34997436 DOI: 10.1007/s10995-021-03331-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Hyperglycaemia first detected in pregnancy (HFDP), on the rise in urban sub-Saharan Africa (SSA), may negatively impact foetal neurodevelopment, with potential long-term cognitive consequences for the child. Data on this association from SSA is lacking, and we aimed to investigate the association in 3- to 6-year-old children in Soweto, South Africa. METHODS In this comparative study, we compared cognitive skills measured with the Herbst Early Childhood Development Criteria test in 95 children born to mothers with HFDP and 99 participants unexposed to maternal HFDP. Fine and gross motor skills were secondary outcomes. Ordinal regression analysis with known confounders was performed for children born at-term. RESULTS Of children exposed to HFDP born at-term, 24.3% scored 'high' and 25.7% scored 'low' in the cognitive subsection of the test, as opposed to 37.7% and 12.9% in the HFDP-unexposed group, respectively. In ordinal regression, exposed participants had a significantly lower odds of scoring in a higher cognitive category when adjusting for maternal confounders and socio-economic status (OR 0.33, 95% CI 0.15-0.74, p = 0.007). No difference was found in gross motor development between the two groups; differences in fine motor development were attenuated after adjustment for maternal pregnancy factors and household socioeconomic status (OR 0.62, 95% CI 0.28-1.37, p = 0.239). CONCLUSIONS FOR PRACTICE Exposure to HFDP was negatively associated with cognitive development at preschool age. Optimising maternal (preconception) health and early childhood cognitive stimulation could help more children reach their developmental potential.
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Affiliation(s)
- L M Soepnel
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Stratenum 6.131, P.O Box 85500, 3508 GA, Utrecht, The Netherlands. .,SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - V Nicolaou
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - C E Draper
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - N S Levitt
- Chronic Disease Initiative for Africa, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - K Klipstein-Grobusch
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Stratenum 6.131, P.O Box 85500, 3508 GA, Utrecht, The Netherlands.,Division of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - S A Norris
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Global Health Research Institute, School of Human Development and Health, University of Southampton, Southampton, UK
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18
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Khoza M, Kayitesi E, Dlamini BC. Physicochemical Characteristics, Microstructure and Health Promoting Properties of Green Banana Flour. Foods 2021; 10:2894. [PMID: 34945445 PMCID: PMC8700615 DOI: 10.3390/foods10122894] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 11/16/2022] Open
Abstract
This study aimed to investigate the proximate composition, mineral content, functional properties, molecular structure, in vitro starch digestibility, total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity (DPPH, FRAP) of green banana flour (GBF) cultivars grown in South Africa. With proximate composition, Finger Rose and Pisang Awak had the highest protein (4.33 g/100 g) and fat (0.85 g/100 g) content, respectively. The highest ash content (3.50 g/100 g) occurred with both Grand Naine and FHIA-01 cultivars. Potassium and copper were the most abundant and least minerals, respectively. Pisang Awak cultivar had the highest water absorption capacity (67.11%), while Du Roi had the highest swelling power (0.83 g/g) at 90 °C. Scanning electron microscopy (SEM) images revealed that starch granules from all GBF cultivars were irregular in shape and they had dense surfaces with debris. All the GBF cultivars had similar diffraction patterns with prominent peaks from 15°-24° diffraction angles. The resistant starch (RS) and amylose content of the FHIA-01 cultivar indicates that the GBF has the potential to lower risks of type 2 diabetes and obesity. The highest TPC, TFC and antioxidant activity occurred with the Grande Naine cultivar. Based on their functional characteristics, the Grand Naine and FHIA-01 GBF cultivars could potentially be used as raw materials for bakery products as well as for the fortification of snacks.
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Affiliation(s)
- Minenhle Khoza
- Department of Biotechnology and Food Technology, Faculty of Science, DFC Campus, University of Johannesburg, Doornfontein, Johannesburg 2028, South Africa;
| | - Eugenie Kayitesi
- Department of Consumer and Food Sciences, University of Pretoria, Pretoria 0028, South Africa;
| | - Bhekisisa C. Dlamini
- Department of Biotechnology and Food Technology, Faculty of Science, DFC Campus, University of Johannesburg, Doornfontein, Johannesburg 2028, South Africa;
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The influence of maternal blood glucose during pregnancy on weight outcomes at birth and preschool age in offspring exposed to hyperglycemia first detected during pregnancy, in a South African cohort. PLoS One 2021; 16:e0258894. [PMID: 34673829 PMCID: PMC8530360 DOI: 10.1371/journal.pone.0258894] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 10/07/2021] [Indexed: 01/10/2023] Open
Abstract
Introduction Little is known about the influence of hyperglycemia first detected in pregnancy (HFDP) on weight outcomes in exposed offspring in Africa. We investigated the influence of maternal blood glucose concentrations during pregnancy on offspring weight outcomes at birth and preschool age, in offspring exposed to HFDP, in South Africa. Research design and methods Women diagnosed with HFDP had data routinely collected during the pregnancy and at delivery, at a referral hospital, and the offspring followed up at preschool age. Maternal fasting, oral glucose tolerance test 1 and 2-hour blood glucose were measured at diagnosis of HFDP and 2-hour postprandial blood glucose during the third trimester. Offspring were classified as either those exposed to diabetes first recognized in pregnancy (DIP) or gestational diabetes (GDM). At birth, neonates were classified into macrosomia, low birth weight (LBW), large for gestational age (LGA), appropriate (AGA) and small for gestational age (SGA)groups. At preschool age, offspring had height and weight measured and Z-scores for weight, height and BMI calculated. Results Four hundred and forty-three neonates were included in the study at birth, with 165 exposed to DIP and 278 exposed to GDM. At birth, the prevalence of LGA, macrosomia and LBW were 29.6%, 12.2% and 7.5%, respectively, with a higher prevalence of LGA and macrosomia in neonates exposed to DIP. At pre-school age, the combined prevalence of overweight and obesity was 26.5%. Maternal third trimester 2-hour postprandial blood glucose was significantly associated with z-scores for weight at birth and preschool age, and both SGA and LGA at birth. Conclusion In offspring exposed to HFDP, there is a high prevalence of LGA and macrosomia at birth, and overweight and obesity at preschool age, with higher prevalence in those exposed to DIP, compared to GDM. Maternal blood glucose control during the pregnancy influences offspring weight at birth and preschool age.
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Feleke BE, Feleke TE, Kassahun MB, Adane WG, Achenefe D, Genetu A, Nigussie AA, Engedaw HA. Progression of pregnancy induced diabetes mellitus to type two diabetes mellitus, an ambidirectional cohort study. Prim Care Diabetes 2021; 15:596-600. [PMID: 33323352 DOI: 10.1016/j.pcd.2020.11.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/16/2020] [Accepted: 11/29/2020] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Diabetes mellitus (DM) is a metabolic disorder characterized by elevated level of blood glucose. It affects more than 422 million people globally. In resource limited settings, the progression of gestational diabetes (GDM) to DM was not well investigated and this research work was conducted to estimate the incidence of DM after GDM and their predictors in resource limited settings. METHODS A retrospective and prospective cohort studies were used from January 2010 until December 2019. The data were collected using patients chart review, interview and collecting blood sample. Initially, baseline data were collected from GDM and GDM free women and update data were collected every 3 month. Clinical nurses were used to extract the necessary data from medical charts and to collect the data using patient interview. Laboratory technologists were used to measure the blood glucose level of the study participants. The study was conducted in pregnant women presenting themselves in the referral hospitals of Amhara regional state. The sample size was calculated using Epi-info software. Descriptive statistics were used to describe the profile of study participants. Kaplan Meier survival curve and life-table were used to estimate the survivals of study participants. Incidence density was used to estimate the incidence of DM. Cox regression was used to identify the predictors DM. RESULTS A total of 4892 women were followed giving for the response rate of 88.62%. The mean age of study participants at the start of the study was 28.34 years with standard deviation [SD] ±7.48 years. DM was associated with gestational diabetes mellitus [AHR (adjusted hazard ratio); 2.53, 95% CI: 2.14-2.99], frequency of breastfeeding [AHR; 0.72, 95% CI: 0.69-0.74], age [AHR; 1.04, 95% CI: 1.03-1.05], parity [AHR; 1.14, 95% CI: 1.07-1.21], regular physical exercise [AHR; 0.45, 95% CI: 0.37-0.55], family history of DM [AHR; 2.04, 95% CI: 1.76-2.37], stillbirth [AHR; 1.67: 95% CI: 1.34-2.07], abortion [AHR; 2.64, 95% CI: 2.25-3.09]. CONCLUSION The progression of GDM to DM was very high and special follow up should be implemented for women with a history of abortion, stillbirth, and family history of DM.
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Affiliation(s)
- Berhanu Elfu Feleke
- Department of Epidemiology and Biostatistics, University of Bahir Dar, Bahir Dar, Ethiopia.
| | - Teferi Elfu Feleke
- Department of Pediatrics and Child Health Wolkite University, Butajira General Hospital, Ethiopia
| | | | | | - Desalegn Achenefe
- Department of Internal Medicine, University of Bahir Dar, Bahir Dar, Ethiopia
| | - Abere Genetu
- Department of Internal Medicine, University of Bahir Dar, Bahir Dar, Ethiopia
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Agbozo F, Abubakari A, Zotor F, Jahn A. Gestational Diabetes Mellitus per Different Diagnostic Criteria, Risk Factors, Obstetric Outcomes and Postpartum Glycemia: A Prospective Study in Ghana. Clin Pract 2021; 11:257-271. [PMID: 34066909 PMCID: PMC8161461 DOI: 10.3390/clinpract11020039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 11/20/2022] Open
Abstract
The surge in gestational diabetes mellitus (GDM) globally requires a health system tailored approach towards prevention, detection and management. We estimated the prevalence of GDM using diverse recommended tests and diagnostic thresholds, and also assessed the risk factors and obstetric outcomes, including postpartum glycemia. Using a prospective cohort design, 446 singleton pregnant women without pre-existing diabetes did GDM tests in five hospitals in Ghana from 20-34 weeks using fasting plasma glucose (FPG), one-hour and 2-h oral glucose tolerance test (OGTT). Birth outcomes of 403 were assessed. GDM was diagnosed using six international diagnostic criteria. At 12 weeks postpartum, impaired fasting glucose (6.1-6.9 mmol/L) and diabetes (FPG ≥7.0 mmol/L) were measured for 100 women. Per FPG and 2-h OGTT cut-offs, GDM prevalence ranged between 8.3-23.8% and 4.4-14.3%, respectively. Risk factors included overweight (OR = 2.13, 95% CI: 1.13-4.03), previous miscarriage (OR = 4.01, 95% CI: 1.09-14.76) and high caloric intake (OR = 2.91, 95% CI: 1.05-8.07). Perineal tear (RR = 2.91, 95% CI: 1.08-5.57) and birth asphyxia (RR = 3.24, 95% CI: 1.01-10.45) were the associated perinatal outcomes. At 12 weeks postpartum, 15% had impaired fasting glucose, and 5% had diabetes. Tackling modifiable risk factors is crucial for prevention. Glycemic monitoring needs to be integral in postpartum and well-child reviews.
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Affiliation(s)
- Faith Agbozo
- Department of Family and Community Health, School of Public Health, University of Health and Allied Health Sciences, Ho, Ghana, Private Mail Bag 31 Ho, Ghana;
- Heidelberg Institute of Global Health, University Hospital Heidelberg Germany, Im Neuenheimer Feld 130.3, 60120 Heidelberg, Germany;
| | - Abdulai Abubakari
- Public Health Department, University for Development Studies, Tamale Ghana, Tamale P.O. Box TL 1350, Ghana;
| | - Francis Zotor
- Department of Family and Community Health, School of Public Health, University of Health and Allied Health Sciences, Ho, Ghana, Private Mail Bag 31 Ho, Ghana;
| | - Albrecht Jahn
- Heidelberg Institute of Global Health, University Hospital Heidelberg Germany, Im Neuenheimer Feld 130.3, 60120 Heidelberg, Germany;
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Soepnel LM, Nicolaou V, Slater C, Chidumwa G, Levitt NS, Klipstein-Grobusch K, Norris SA. Obesity and adiposity of 3- to 6-year-old children born to mothers with hyperglycaemia first detected in pregnancy in an urban South African setting. Ann Hum Biol 2021; 48:81-92. [PMID: 33955800 DOI: 10.1080/03014460.2021.1918245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Understanding the association between maternal metabolic conditions in pregnancy and the risk of childhood overweight, a growing concern in sub-Saharan Africa (SSA), helps to identify opportunities for childhood obesity prevention. AIM To assess the association between hyperglycaemia first detected in pregnancy (HFDP) (gestational diabetes mellitus [GDM] and diabetes in pregnancy [DIP]) and child obesity and adiposity in pre-school-aged children in South Africa, independently of maternal BMI. SUBJECTS AND METHODS Measurement of anthropometry and fat mass index (FMI) by the deuterium dilution method was done for 102 3-6-year-old children born to mothers with HFDP and 102 HFDP-unexposed children. Hierarchical regression analysis and generalised structural equation modelling (GSEM) were performed. RESULTS The prevalence of overweight/obesity was 10.5% and 11.1% in children exposed to GDM and DIP, respectively, and 3.9% in the HFDP-unexposed group. Log-transformed FMI was significantly higher in the DIP-exposed group (β = 0.166, 95% CI = 0.014-0.217 p= .026), but not when adjusting for maternal pregnancy BMI (β = 0.226, 95% CI = 0.003-0.015, p = .004). GSEM showed significant total effects of maternal BMI and birth weight on FMI/BMI. CONCLUSIONS Maternal pregnancy BMI seems to play a greater role in the development of childhood adiposity than maternal hyperglycaemia, requiring further research and identifying maternal BMI as a relevant prevention target in our setting.
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Affiliation(s)
- Larske M Soepnel
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Veronique Nicolaou
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Glory Chidumwa
- Division of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Naomi S Levitt
- Department of Medicine, Chronic Disease Initiative for Africa, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Kerstin Klipstein-Grobusch
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Division of Epidemiology and Biostatistics, School of Public Health, 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, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Global Health Research Institute, School of Human Development and Health, University of Southampton, Southampton, UK
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Mutabazi JC, Enok Bonong PR, Trottier H, Ware LJ, Norris SA, Murphy K, Levitt N, Zarowsky C. Integrating gestational diabetes and type 2 diabetes care into primary health care: Lessons from prevention of mother-to-child transmission of HIV in South Africa - A mixed methods study. PLoS One 2021; 16:e0245229. [PMID: 33481855 PMCID: PMC7822503 DOI: 10.1371/journal.pone.0245229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 12/25/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Implementation of the programmes for the Prevention of Mother to Child Transmission (PMTCT) of Human Immunodeficiency Virus (HIV) into antenatal care over the last three decades could inform implementation of interventions for other health challenges such as gestational diabetes mellitus (GDM). This study assessed PMTCT outcomes, and how GDM screening, care, and type 2 diabetes (T2DM) prevention were integrated into PMTCT in Western Cape (WC), South Africa. METHODS A convergent mixed methods and triangulation design were used. Content and thematic analysis of PMTCT-related policy documents and of 30 semi-structured interviews with HIV/PMTCT experts, health care workers and women under PMTC diagnosed with GDM complement quantitative longitudinal analysis of PMTCT implementation indicators across the WC for 2012-2017. RESULTS Provincial PMTCT and Post Natal Care (PNC) documents emphasized the importance of PMTCT, but GDM screening and T2DM prevention were not covered. Data on women with both HIV and GDM were not available and GDM screening was not integrated into PMTCT. Women who attended HIV counselling and testing annually increased at 17.8% (95% CI: 12.9% - 22.0%), while women who delivered under PMTCT increased at 3.1% (95% CI: 0.6% - 5.9%) annually in the WC. All 30 respondents favour integrating GDM screening and T2DM prevention initiatives into PMTCT. CONCLUSION PMTCT programmes have not yet integrated GDM care. However, Western Cape PMTCT integration experience suggests that antenatal GDM screening and post-partum initiatives for preventing or delaying T2DM can be successfully integrated into PMTCT and primary care.
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Affiliation(s)
- Jean Claude Mutabazi
- Département de médecine sociale et préventive, École de Santé Publique, Université de Montréal, Montréal, QC, Canada
- Centre de recherche en santé publique (CReSP), Université de Montréal et CIUSSS du Centre-Sud-de-l’Île-de-Montréal, Montréal, Canada
- Centre de Recherche du Centre Hospitalier de l’Universitaire Sainte Justine, Montréal, QC, Canada
| | - Pascal Roland Enok Bonong
- Département de médecine sociale et préventive, École de Santé Publique, Université de Montréal, Montréal, QC, Canada
- Centre de Recherche du Centre Hospitalier de l’Universitaire Sainte Justine, Montréal, QC, Canada
| | - Helen Trottier
- Département de médecine sociale et préventive, École de Santé Publique, Université de Montréal, Montréal, QC, Canada
- Centre de Recherche du Centre Hospitalier de l’Universitaire Sainte Justine, Montréal, QC, Canada
| | - Lisa Jayne Ware
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Shane A. Norris
- SAMRC Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Katherine Murphy
- Division of Endocrinology, Department of Medicine, Faculty of Health Science, University of Cape Town, Chronic Disease Initiative for Africa, Cape Town, Western Cape, South Africa
| | - Naomi Levitt
- Division of Endocrinology, Department of Medicine, Faculty of Health Science, University of Cape Town, Chronic Disease Initiative for Africa, Cape Town, Western Cape, South Africa
| | - Christina Zarowsky
- Département de médecine sociale et préventive, École de Santé Publique, Université de Montréal, Montréal, QC, Canada
- Centre de recherche en santé publique (CReSP), Université de Montréal et CIUSSS du Centre-Sud-de-l’Île-de-Montréal, Montréal, Canada
- School of Public Health, University of the Western Cape, Bellville, South Africa
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Cock IE, Ndlovu N, Van Vuuren SF. The use of South African botanical species for the control of blood sugar. JOURNAL OF ETHNOPHARMACOLOGY 2021; 264:113234. [PMID: 32768640 DOI: 10.1016/j.jep.2020.113234] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/07/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Diabetes mellitus (DM) is one of the most prevalent diseases globally and is of considerable concern to global health. Approximately 425 million people are estimated to have DM globally and this is predicted to increase to >642 million by 2040. Whilst the prevalence of DM in South Africa is slightly lower than the global average, it is expected to rise rapidly in future years as more South Africans adopt a high calorie "westernised" diet. Traditional medicines offer an alternative for the development of new medicines to treat DM and the usage of South African plants is relatively well documented. AIM OF THE STUDY To critically review the literature on the anti-diabetic properties of South African plants and to document plant species used for the treatment of DM. Thereafter, a thorough examination of the related research will highlight where research is lacking in the field. MATERIALS AND METHODS A review of published ethnobotanical books, reviews and primary scientific studies was undertaken to identify plants used to treat DM in traditional South African healing systems and to identify gaps in the published research. The study was non-biased, without taxonomic preference and included both native and introduced species. To be included, species must be recorded in the pharmacopeia of at least one South African ethnic group for the treatment of DM. RESULTS One hundred and thirty-seven species are recorded as therapies for DM, with leaves and roots most commonly used. The activity of only 43 of these species have been verified by rigorous testing, and relatively few studies have examined the mechanism of action. CONCLUSION Despite relatively extensive ethnobotanical records and a diverse flora, the anti-diabetic properties of South African medicinal plants is relatively poorly explored. The efficacy of most plants used traditionally to treat DM are yet to be verified and few mechanistic studies are available. Further research is required in this field.
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Affiliation(s)
- I E Cock
- School of Environment and Science, Nathan Campus, Griffith University, 170 Kessels Rd, Nathan, Queensland, 4111, Australia; Environmental Futures Research Institute, Nathan Campus, Griffith University, 170 Kessels Rd, Nathan, Queensland, 4111, Australia
| | - N Ndlovu
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Gauteng, 2193, South Africa
| | - S F Van Vuuren
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Gauteng, 2193, South Africa.
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Double-duty solutions for optimising maternal and child nutrition in urban South Africa: a qualitative study. Public Health Nutr 2020; 24:3674-3684. [PMID: 32830637 DOI: 10.1017/s1368980020002426] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To obtain a community perspective on key nutrition-specific problems and solutions for mothers and children. DESIGN A qualitative study comprising nine focus group discussions (FGD) following a semi-structured interview guide. SETTING The township of Soweto in South Africa with a rising prevalence of double burden of malnutrition. PARTICIPANTS Men and women aged ≥18 years (n 66). Three FGD held with men, six with women. RESULTS Despite participants perceived healthy diet to be important, they felt their ability to maintain a healthy diet was limited. Inexpensive, unhealthy food was easier to access in Soweto than healthier alternatives. Factors such as land use, hygiene and low income played a fundamental role in shaping access to foods and decisions about what to eat. Participants suggested four broad areas for change: health sector, social protection, the food system and food environment. Their solutions ranged from improved nutrition education for women at clinic visits, communal vegetable gardens and government provision of food parcels to regulatory measures to improve the healthiness of their food environment. CONCLUSIONS South Africa's current nutrition policy environment does not adequately address community-level needs that are often linked to structural factors beyond the health sector. Our findings suggest that to successfully address the double burden of malnutrition among women and children, a multifaceted approach is needed combining action on the ground with coherent policies that address upstream factors, including poverty. Further, there is a need for public engagement and integration of community perspectives and priorities in developing and implementing double-duty actions to improve nutrition.
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Rayis DA, Ahmed ABA, Sharif ME, ElSouli A, Adam I. Reliability of glycosylated hemoglobin in the diagnosis of gestational diabetes mellitus. J Clin Lab Anal 2020; 34:e23435. [PMID: 32614103 PMCID: PMC7595906 DOI: 10.1002/jcla.23435] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/24/2020] [Accepted: 05/28/2020] [Indexed: 12/11/2022] Open
Abstract
Background Oral glucose tolerance test (OGTT) performed at 24‐28 weeks gestation is the current recommended method to the diagnosis of gestational diabetes mellitus (GDM). Many recent studies investigating HbA1c in detecting GDM yield different results. There are no published data on HbA1c in the diagnosis of GDM in Sub‐Saharan countries including Sudan. Methods A cross‐sectional study was carried out at the antenatal care of Saad Abuelela Maternity Hospital, Khartoum, Sudan during the period from February to November 2018 to assess the reliability of HbA1c in the diagnosis of GDM. GDM was diagnosed according to the International Association of Diabetes and Pregnancy Study Groups using a 75‐g oral glucose tolerance test. Results Three hundred and forty‐eight women were enrolled. The mean (SD) of the age, gravidity, and gestational age of the enrolled women were 27.8 (5.6) years, 2.36 (2.2) and 26.26 (2.43) weeks, respectively. Sixty‐eight women (19.5%) had GDM. A poor productively for HbA1c in diagnosis GDM was shown (AUC = 0.62, 95% CI = 0.55‐0.69). At HbA1c level of 4.150%, the sensitivity and specificity of the diagnosis for GDM were 76.51% and 37.85%, respectively. At HbA1c level of 5.850%, the sensitivity and specificity of the diagnosis for GDM were 13.24% and 91.43%, respectively. While there was no significant (Spearman) correlation between fasting blood glucose and HbA1c, there were significant correlations between HbA1c and OGTT 1 and 2 hours of OGTT. Conclusion In this study, HbA1c has a poor reliability, insufficient sensitivity or specificity for use to diagnose GDM.
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Affiliation(s)
- Duria A Rayis
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Abdel B A Ahmed
- College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Manal E Sharif
- Unaizah College of Medicine, Qassim University, Unaizah, Saudi Arabia
| | - Amir ElSouli
- Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, Kingdom of Saudi Arabia, Qassim, Uniazah, Saudi Arabia, 11111, Saudi Arabia
| | - Ishag Adam
- Department of Obstetrics and Gynecology, Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, Saudi Arabia
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Rayis DA, Musa IR, Al-Shafei AI, Moheldein AH, El-Gendy OA, Adam I. High haemoglobin levels in early pregnancy and gestational diabetes mellitus among Sudanese women. J OBSTET GYNAECOL 2020; 41:385-389. [PMID: 32496157 DOI: 10.1080/01443615.2020.1741522] [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: 10/24/2022]
Abstract
A longitudinal study was carried out to investigate the prevalence and risk factors (including haemoglobin levels) for gestational diabetes mellitus (GDM) in Khartoum, Sudan. The study was carried out at Saad Abuelela Hospital (Khartoum, Sudan) during February to November 2017. Pregnant women in early pregnancy (gestational age <14 weeks) were enrolled in the study. The detailed medical and obstetrics history was recorded for each participant using a questionnaire. The women were then followed up, where a 75-g oral glucose tolerance test was performed at 24 - 28 weeks of gestation. Of 290 women, 259 (89.3%) completed the follow-up. The mean (standard deviation [SD]) of the age, gravidity and gestational age at enrolment were 28.02 (5.7) years, 2.37 (2.42) and 10.86 (2.63) weeks, respectively. Forty-eight women (18.5%) had GDM. Binary regression showed that while age, parity, residence, education and body mass index (BMI) were not associated with GDM, a high haemoglobin level was the only factor associated with GDM (OR = 1.52, 95% confidence interval [CI] = 1.07 - 2.16, p = .019). Women with haemoglobin > 10.8 g/dl were at a higher risk of GDM (OR = 2.52, 95% CI = 1.02 - 6.27, p = .044). There is a high prevalence of GDM, especially among women with high haemoglobin levels.Impact statementWhat is already known on this subject? Gestational diabetes mellitus (GDM) is one of the most common complications during pregnancy, contributing significantly to maternal, perinatal morbidity and mortality and can lead to adverse consequences for the health of both mother and offspring later in life. The rate of GDM varies with the various settings and populations, and a prevalence of 1-14% has been reported depending on the population studied. High haemoglobin levels were recently reported to be associated with GDM.What do the results of this study add? There is a high prevalence of GDM in Khartoum, Sudan, especially among women with high haemoglobin levels in early pregnancy.What are the implications of these findings for clinical practice and/or further research? Haemoglobin levels could be used as reliable markers to detect GDM. These markers could be used in the prevention of GDM.
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Affiliation(s)
- Duria A Rayis
- Department of Obstetrics and Gyneology, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Imad R Musa
- King Abdu Aziz Armed Forces, Hospital at Air Base, Dhahran, Kingdom of Saudi Arabia
| | - Ahmad I Al-Shafei
- Unaizah College of Medicine, Qassim University, Unaizah, Kingdom of Saudi Arabia
| | | | - Ola A El-Gendy
- Unaizah College of Medicine, Qassim University, Unaizah, Kingdom of Saudi Arabia
| | - Ishag Adam
- Department of Obstetrics and Gynecology, Unaizah College of Medicine, Qassim University, Unaizah, Kingdom of Saudi Arabia
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Mghanga FP, Maduhu EA, Nyawale HA. Prevalence and associated factors of gestational diabetes mellitus among rural pregnant women in southern Tanzania. Ghana Med J 2020; 54:82-87. [PMID: 33536677 PMCID: PMC7829049 DOI: 10.4314/gmj.v54i2.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Gestational diabetes mellitus (GDM) is a potential risk factor for both maternal and foetal complications during pregnancy. This study aimed to determine the prevalence and factors associated with GDM among pregnant women in Southern Tanzania. METHODS A cross-sectional study was conducted among 612 randomly selected pregnant women attending routine antenatal clinics in Southern Tanzania from September to October 2017. Detailed medical and gynaecological history was taken using pre-tested questionnaires. Blood samples were collected for fasting and oral glucose tolerance tests. We diagnosed GDM using the World Health Organization 2013 diagnostic criteria for diabetes mellitus. We performed statistical analysis using SPSS v24.0. Possible associations and statistical significance were measured using odds ratio at 95% confidence interval, and p-values of <0.05 were considered statistically significant. RESULTS The mean age and standard deviation of the study subjects was 24.5±6.9 years. The prevalence of GDM was 4.3%. GDM was significantly associated with: being overweight or obese (p<0.001), past history of pre-term delivery (p<0.001), past history of stillbirths (p<0.001), history of macrosmia (p<0.001), alcohol consumption (p=0.001), and having a first degree relative with diabetes mellitus (p<0.001). CONCLUSION Prevalence of Gestational Diabetes Mellitus is low in this study setting. We recommend close attention to at risk women to prevent development of GDM. FUNDING None declared.
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Affiliation(s)
- Fabian P Mghanga
- Department of Internal Medicine, Faculty of Medicine, Archbishop James University College, Songea, Tanzania
| | - Elia A Maduhu
- Department of Internal Medicine, Faculty of Medicine, Archbishop James University College, Songea, Tanzania
| | - Helmut A Nyawale
- Department of Community Medicine, Faculty of Medicine, Archbishop James University College, Songea, Tanzania
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High Prevalence of Gestational Diabetes Mellitus in Rural Tanzania-Diagnosis Mainly Based on Fasting Blood Glucose from Oral Glucose Tolerance Test. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17093109. [PMID: 32365670 PMCID: PMC7246425 DOI: 10.3390/ijerph17093109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 12/16/2022]
Abstract
Gestational diabetes mellitus (GDM) is associated with poor pregnancy outcomes and increased long-term risk of metabolic diseases for both mother and child. In Tanzania, GDM prevalence increased from 0% in 1991 to 19.5% in 2016. Anaemia has been proposed to precipitate the pathogenesis of GDM. We aimed to examine the prevalence of GDM in a rural area of Tanzania with a high prevalence of anaemia and to examine a potential association between haemoglobin concentration and blood glucose during pregnancy. The participants were included in a population-based preconception, pregnancy and birth cohort study. In total, 538 women were followed during pregnancy and scheduled for an oral glucose tolerance test (OGTT) at week 32-34 of gestation. Gestational diabetes mellitus was diagnosed according to the WHO 2013 guidelines. Out of 392 women screened, 39% (95% CI: 34.2-44.1) had GDM, the majority of whom (94.1%) were diagnosed based solely on the fasting blood sample from the OGTT. No associations were observed between haemoglobin or ferritin and glucose measurements during pregnancy. A very high prevalence of GDM was found in rural Tanzania. In view of the laborious, costly and inconvenient OGTT, alternative methods such as fasting blood glucose should be considered when screening for GDM in low- and middle-income countries.
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Natamba BK, Namara AA, Nyirenda MJ. Burden, risk factors and maternal and offspring outcomes of gestational diabetes mellitus (GDM) in sub-Saharan Africa (SSA): a systematic review and meta-analysis. BMC Pregnancy Childbirth 2019; 19:450. [PMID: 31779584 PMCID: PMC6883645 DOI: 10.1186/s12884-019-2593-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 11/11/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The burden, determinants and outcomes of gestational diabetes mellitus (GDM) in sub-Saharan Africa are not known. We summarized existing evidence on the prevalence, risk factors and complications of GDM in the region. METHODS PubMed was searched from inception to January 31st 2019. Studies were included if carried out in any of the sub-Saharan Africa countries and were available as abstracts or full texts. Interventional studies and those only including qualitative data were excluded. We employed random effects modelling to estimate the pooled GDM prevalence and risk ratios (RRs) for risk factors and outcomes of GDM and their 95%CI. RESULTS 283 papers were identified in the initial search, 33 of which met the inclusion criteria. Data on GDM burden suggest a pooled prevalence of 9% (95%CI, 7-12%). Family history of type 2 diabetes and previous history of GDM, macrosomia, stillbirth and abortion were important risk factors of GDM. In addition, being overweight or obese, over 25 years of age or hypertensive increased the risk of GDM. In terms of complications, GDM more than doubles the risk macrosomia (RR; 95%CI: 2.2; 1.1-4.4). CONCLUSIONS There is a high burden of gestational diabetes mellitus in sub-Saharan Africa, but more studies are needed to document locally important risk factors as well as maternal and offspring outcomes. Interventions to reduce obesity among older African women might lead to reduced risk of GDM in sub-Saharan Africa.
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Affiliation(s)
| | - Arthur Araali Namara
- MRC/UVRI and LSHTM Uganda Research Unit, Plot 51-59, Nakiwogo Road, PO Box 49, Entebbe, Uganda
| | - Moffat Joha Nyirenda
- MRC/UVRI and LSHTM Uganda Research Unit, Plot 51-59, Nakiwogo Road, PO Box 49, Entebbe, Uganda
- Department of Noncommunicable Diseases EpidemiologyFaculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK
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Muhwava LS, Murphy K, Zarowsky C, Levitt N. Experiences of lifestyle change among women with gestational diabetes mellitus (GDM): A behavioural diagnosis using the COM-B model in a low-income setting. PLoS One 2019; 14:e0225431. [PMID: 31765431 PMCID: PMC6876752 DOI: 10.1371/journal.pone.0225431] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 11/05/2019] [Indexed: 12/17/2022] Open
Abstract
Background Lifestyle change can reduce the risk of developing type 2 diabetes among women with prior gestational diabetes mellitus (GDM). While understanding women’s lived experiences and views around GDM is critical to the development of behaviour change interventions to reduce this risk, few studies have addressed this issue in low- and middle- income countries. The aim of the study was to explore women’s lived experiences of GDM and the feasibility of sustained lifestyle modification after GDM in a low-income setting. Methods This was a descriptive qualitative study on the lived experiences of women with prior GDM, who received antenatal care at a public sector tertiary hospital in Cape Town, South Africa. Nine focus groups and five in-depth interviews were conducted with a total of thirty-five women. Data were analysed using content analysis and the COM-B (Capabilities, Opportunities, Motivations and Behaviour) model to identify factors influencing lifestyle change during and beyond the GDM pregnancy. Results The results suggest that the COM-B model’s concepts of capability (knowledge and skills for behaviour change), opportunity (resources for dietary change and physical activity) and motivation (perception of future diabetes risk) are relevant to lifestyle change among GDM women in South Africa. The results will contribute to the design of a postpartum health system intervention for women with recent GDM. Conclusion Our findings highlight the need for health services to improve counselling and education for women with GDM in South Africa. Support from family and health professionals is essential for women to achieve lifestyle change. The experience of GDM imposed a significant psychological burden on women, which affected motivation for lifestyle change. To achieve long-term lifestyle change, behaviour interventions for women with prior GDM need to address their capability, opportunity and motivation for lifestyle change during and beyond pregnancy.
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Affiliation(s)
- Lorrein Shamiso Muhwava
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Chronic Diseases Initiative for Africa, Cape Town, South Africa
- * E-mail:
| | - Katherine Murphy
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Chronic Diseases Initiative for Africa, Cape Town, South Africa
| | - Christina Zarowsky
- Chronic Diseases Initiative for Africa, Cape Town, South Africa
- University of Montreal, Hospital Research Centre and University of Montreal School of Public Health, Montreal, Canada
- School of Public Health, Faculty of Community and Health Sciences, University of the Western Cape, Cape Town, South Africa
| | - Naomi Levitt
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Chronic Diseases Initiative for Africa, Cape Town, South Africa
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Yuen L, Saeedi P, Riaz M, Karuranga S, Divakar H, Levitt N, Yang X, Simmons D. Projections of the prevalence of hyperglycaemia in pregnancy in 2019 and beyond: Results from the International Diabetes Federation Diabetes Atlas, 9th edition. Diabetes Res Clin Pract 2019; 157:107841. [PMID: 31518656 DOI: 10.1016/j.diabres.2019.107841] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 09/06/2019] [Indexed: 01/13/2023]
Abstract
AIM Hyperglycaemia in pregnancy (HIP) is one of the most common complications of pregnancy. This study aims to examine the projected HIP prevalence in 2030 and 2045 using multiple methods. METHODS The International Diabetes Federation Diabetes Atlas 2019 prevalence was projected to 2030 and 2045 by: (1) carrying forward the 2019 age-adjusted prevalence rates; (2) applying a linear regression of the past four editions of the IDF Diabetes Atlas; (3) applying a regression of the previous editions with the most consistent trend, followed by extrapolation from the 9th edition HIP estimate. RESULTS Respectively, for 2030 and 2045, Method 1 projected a declining HIP rate with prevalences of 14.0% and 13.3%, Method 2 projected an increasing HIP prevalence at 16.5% and 18.3%, Method 3 predicted stabilisation of the rate from 16.0% to 15.8%. CONCLUSION Assuming other factors remain unchanged, our best estimation of age-adjusted HIP will show stabilisation between 2019 and 2045 of 15.8% to 16.0%. However, this estimate is confounded by the heterogeneity of studies and the influence of different gestational diabetes mellitus diagnostic criteria. To provide accurate future comparisons we recommend standardising the diagnostic criteria to the International Association of Diabetes in Pregnancy Study Groups.
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Affiliation(s)
- Lili Yuen
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; School of Medicine, Western Sydney University, Campbelltown, Australia
| | - Pouya Saeedi
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; International Diabetes Federation, Brussels, Belgium
| | - Musarrat Riaz
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; Baqai Medical University, Karachi, Pakistan
| | - Suvi Karuranga
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; International Diabetes Federation, Brussels, Belgium
| | - Hema Divakar
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; Divakar's Specialty Hospital, Bengaluru, India; Federation of Obstetric and Gynaecological Societies of India (FOGSI), India
| | - Naomi Levitt
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; University of Cape Town, South Africa
| | - Xilin Yang
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; Tianjin Medical University, Tianjin, China
| | - David Simmons
- International Diabetes Federation Atlas 9th Edition Hyperglycaemia in Pregnancy Special Interest Group (HIP-SIG), Belgium; School of Medicine, Western Sydney University, Campbelltown, Australia.
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Steyn A, Crowther NJ, Norris SA, Rabionet R, Estivill X, Ramsay M. Epigenetic modification of the pentose phosphate pathway and the IGF-axis in women with gestational diabetes mellitus. Epigenomics 2019; 11:1371-1385. [PMID: 31583916 DOI: 10.2217/epi-2018-0206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Gestational diabetes mellitus (GDM) has been linked with adverse long-term health outcomes for the fetus and mother. These effects may be mediated by epigenetic modifications. Materials & methods: Genome-wide RNA sequencing was performed in placental tissue and maternal blood in six GDM and six non-GDM pregnancies. Promoter region DNA methylation was examined for selected genes and correlated with gene expression to examine an epigenetic modulator mechanism. Results: Reductions of mRNA expression and increases in promoter methylation were observed for G6PD in GDM women, and for genes encoding IGF-binding proteins in GDM-exposed placenta. Conclusion: GDM involves epigenetic attenuation of G6PD, which may lead to hyperglycemia and oxidative stress, and the IGF-axis, which may modulate fetal macrosomia.
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Affiliation(s)
- Angela Steyn
- Division of Human Genetics, National Health Laboratory Service and the School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
| | - Nigel J Crowther
- Division of Human Genetics, National Health Laboratory Service and the School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa.,The Department of Chemical Pathology, School of Pathology, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
| | - Shane A Norris
- Developmental Pathways for Health Research Unit, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
| | - Raquel Rabionet
- The Centre for Genomic Regulation, Genes and Diseases Program, Barcelona, Spain
| | - Xavier Estivill
- The Centre for Genomic Regulation, Genes and Diseases Program, Barcelona, Spain
| | - Michèle Ramsay
- Division of Human Genetics, National Health Laboratory Service and the School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa.,The Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
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Soepnel LM, Nicolaou V, Huddle KRL, Klipstein-Grobusch K, Levitt NS, Norris SA. Maternal and neonatal outcomes following a diabetic pregnancy within the context of HIV. Int J Gynaecol Obstet 2019; 147:404-412. [PMID: 31479156 DOI: 10.1002/ijgo.12956] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 06/07/2019] [Accepted: 08/30/2019] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To characterize the demographics, comorbidities, management, and outcomes of pregnant women with pre-gestational and gestational diabetes (GDM), including overt and true GDM, taking into account HIV infection and the influence of exposure to oral hypoglycemic agents (OHAs). METHODS A review of medical records of 1071 diabetic pregnancies (between 2012 and 2018) at a tertiary hospital in South Africa. RESULTS Of the women, 43% had GDM, 19% had type 1 diabetes (T1DM), and 38% had type 2 diabetes (T2DM). Each group had a mean initial body mass index (BMI) >25 kg/m2 . Despite poor initial HbA1c for pre-gestational groups, over 90% of the cohort achieved glycemic control by the time of delivery. The rate of prematurity was 30.9%. Perinatal mortality (PNM) was 5.1% for the pre-gestational group and 1.8% for GDM. Of the cohort, 23.9% was HIV infected. PNM was higher in the HIV-infected pregnancies (9.4%) than non-HIV exposed pregnancies (1.8%, P<0.001). The macrosomia rate was higher in the glibenclamide-exposed group than the insulin-alone group (12.2% vs 0%, P=0.025). CONCLUSION Obesity is a significant predictor for macrosomia and was high in all groups. In a low-/middle-income country setting with a high prevalence of HIV and high usage of OHAs as an alternative to insulin therapy, HIV might be associated with higher PNM and glibenclamide with increased rates of macrosomia, which warrants further exploration.
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Affiliation(s)
- Larske M Soepnel
- SAMRC Developmental Pathways for Health Research Unit, Department of Pediatrics, University of the Witwatersrand, Johannesburg, South Africa.,Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht University, Utrecht, Netherlands
| | - Veronique Nicolaou
- SAMRC Developmental Pathways for Health Research Unit, Department of Pediatrics, University of the Witwatersrand, Johannesburg, South Africa.,Department of Medicine, Chris Hani Baragwanath Academic Hospital and Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kenneth R L Huddle
- Department of Medicine, Chris Hani Baragwanath Academic Hospital and Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kerstin Klipstein-Grobusch
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht University, Utrecht, Netherlands.,Division of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Naomi S Levitt
- Diabetic Medicine and Endocrinology, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Shane A Norris
- SAMRC Developmental Pathways for Health Research Unit, Department of Pediatrics, University of the Witwatersrand, Johannesburg, South Africa
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Muche AA, Olayemi OO, Gete YK. Prevalence of gestational diabetes mellitus and associated factors among women attending antenatal care at Gondar town public health facilities, Northwest Ethiopia. BMC Pregnancy Childbirth 2019; 19:334. [PMID: 31519151 PMCID: PMC6743162 DOI: 10.1186/s12884-019-2492-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 09/05/2019] [Indexed: 12/11/2022] Open
Abstract
Background Globally, Gestational Diabetes Mellitus (GDM) is rising, but it is a neglected health threat to mothers and their children in low resource countries. Although, GDM is known in Ethiopia, information regarding it remains scarce by recent diagnostic criteria. Therefore, this study aimed to determine the prevalence of GDM and associated factors among women attending antenatal care at Gondar town public health facilities, Northwest Ethiopia. Methods A cross-sectional study was conducted among 1027 pregnant women selected by the systematic random sampling technique. The universal one-step screening and diagnostic strategy was done using a two-hour 75 g oral glucose tolerance test. GDM was diagnosed using updated diagnostic criteria (2017 American Diabetes Association (ADA) or 2013 World Health Organization (WHO) or modified International Association of the Diabetes and Pregnancy Study Groups diagnostic criteria (IADPSG)). Binary logistic regression model was used to identify factors associated with GDM. Results Of the total 1027 pregnant women, 12.8% (95% CI: 10.8–14.8) were diagnosed with GDM. Overweight and/or obesity (MUAC ≥28 cm) (AOR = 2.25, 95% CI: 1.18–4.26), previous history of GDM (AOR = 5.82, 95% CI: 2.57–13.18), family history of diabetes (AOR = 4.03, 95% CI: 1.57–10.35), low physical activity (AOR = 3.36, 95% CI: 1.60–7.04), inadequate dietary diversity (AOR = 1.9, 95% CI: 1.02–3.53), and antenatal depression (AOR = 4.12, 95% CI: 1.85–9.20) were significantly associated with GDM. Conclusions The prevalence of GDM among women attending antenatal care at Gondar town public health facilities was high. Previous history of GDM, antenatal depression, family history of diabetes, low physical activity, overweight and/or obesity and inadequate dietary diversity were significantly associated with GDM. Routine screening of pregnant women and healthy lifestyle are strongly recommended.
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Affiliation(s)
- Achenef Asmamaw Muche
- Pan African University Life and Earth Sciences Institute (including health and agriculture), Department of Obstetrics and Gynaecology, College of Medicine, University of Ibadan, Ibadan, Nigeria. .,Department of Epidemiology and Biostatistics, Institute of Public Health, University of Gondar, Gondar, Ethiopia.
| | - Oladapo O Olayemi
- Department of Obstetrics and Gynaecology, College of Medicine, University College Hospital, University of Ibadan, Ibadan, Nigeria
| | - Yigzaw Kebede Gete
- Department of Epidemiology and Biostatistics, Institute of Public Health, University of Gondar, Gondar, Ethiopia
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Chivese T, Norris SA, Levitt NS. Progression to type 2 diabetes mellitus and associated risk factors after hyperglycemia first detected in pregnancy: A cross-sectional study in Cape Town, South Africa. PLoS Med 2019; 16:e1002865. [PMID: 31498800 PMCID: PMC6733438 DOI: 10.1371/journal.pmed.1002865] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 08/07/2019] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Global data indicate that women with a history of hyperglycemia first detected in pregnancy (HFDP) are at up to 7 times risk of progressing to type 2 diabetes mellitus (T2DM) compared with their counterparts who have pregnancies that are not complicated by hyperglycemia. However, there are no data from the sub-Saharan African region, which has the highest projected rise in diabetes prevalence globally. The aim of this study was to determine the proportion of women who progress to T2DM and associated risk factors 5 to 6 years after HFDP in Cape Town, South Africa. METHODS AND FINDINGS All women with HFDP, at a major referral hospital in Cape Town, were followed up 5 to 6 years later using a cross-sectional study. Each participant had a 75 g oral glucose tolerance test; anthropometric measurements and a survey were administered. A total of 220 participants were followed up. At this time, their mean age was 37.2 years (SD 6.0). Forty-eight percent (95% CI 41.2-54.4) progressed to T2DM, 5.5% (95% CI 3.1-9.4) had impaired fasting glucose, and 10.5% (95% CI 7.0-15.3) had impaired glucose tolerance. Of the participants who progressed to T2DM, 47% were unaware of their diabetes status. When HFDP was categorized post hoc according to WHO 2013 guidelines, progression in the diabetes in pregnancy (DIP) group was 81% (95% CI 70.2-89.0) and 31.3% (95% CI 24.4-39.3) in the gestational diabetes mellitus (GDM) category. Factors associated with risk of progression to T2DM were; at follow-up: waist circumference (odds ratios [OR] 1.1, 95% CI 1.0-1.1, p = 0.007), hip circumference (OR 0.9, 95% CI 0.8-1.0, p = 0.001), and BMI (OR 1.1, 95% CI 1.0-1.3, p = 0.001), and at baseline: insulin (OR 25.8, 95% CI 3.9-171.4, p = 0.001) and oral hypoglycaemic treatment during HFDP (OR 4.1, 95% CI 1.3-12.9, p = 0.018), fasting (OR 2.7, 95% CI 1.5-4.8, p = 0.001), and oral glucose tolerance test 2-hour glucose concentration at HFDP diagnosis (OR 4.3, 95% CI 2.4-7.7, p < 0.001). Our findings have limitations in that we did not include a control group of women without a history of HFDP. CONCLUSIONS The progression to T2DM in women with previous HFDP found in this study highlights the need for interventions to delay or prevent progression to T2DM after HFDP. In addition, interventions to prevent HFDP may also contribute to reducing the risk of T2DM.
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Affiliation(s)
- Tawanda Chivese
- Chronic Disease Initiative for Africa, Department of Medicine, Faculty of Medicine and Health Sciences, University of Cape Town, Cape Town, South Africa
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Medicine and Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Shane A. 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 S. 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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Ware LJ, Prioreschi A, Bosire E, Cohen E, Draper CE, Lye SJ, Norris SA. Environmental, Social, and Structural Constraints for Health Behavior: Perceptions of Young Urban Black Women During the Preconception Period-A Healthy Life Trajectories Initiative. JOURNAL OF NUTRITION EDUCATION AND BEHAVIOR 2019; 51:946-957. [PMID: 31101479 DOI: 10.1016/j.jneb.2019.04.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 03/31/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE Obesity and noncommunicable disease are rapidly increasing in sub-Saharan Africa. Prevention efforts are critical, particularly for women before conception to maximize intergenerational effects. The authors sought to examine perceptions of health and everyday factors that influenced nutrition, exercise, and other health behaviors to inform a novel community preconception intervention. DESIGN Four focus groups, each with 6-10 participants, were conducted using semistructured interview guides. SETTING Urban Soweto, South Africa. PARTICIPANTS Young nulliparous women aged 18-24 years were recruited using snowball sampling. PHENOMENON OF INTEREST Health behaviors of young women and barriers and facilitators to these behaviors. ANALYSIS After inductive thematic analysis, data were further interpreted within the theoretical framework of the Behavior Change Wheel. RESULTS The data suggested an obesogenic environment in which structural and social factors strongly influenced young women's health choices and limited their capacity for behavior change. CONCLUSIONS AND IMPLICATIONS Community interventions to improve young women's diet, physical activity, and health should recognize (1) the home and social contexts as a source of both role models and barriers to change, (2) the current normalization of obesity, and (3) contextual issues of safety and violence within the community. Understanding young women who overcome these barriers could be beneficial.
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Affiliation(s)
- Lisa J Ware
- MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - Alessandra Prioreschi
- MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Edna Bosire
- MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Emmanuel Cohen
- MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Catherine E Draper
- MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Stephen J Lye
- Department of Physiology, Department of Obstetrics and Gynaecology, Department of Medicine, University of Toronto, Ontario, Canada
| | - Shane A Norris
- MRC/Wits Developmental Pathways for Health Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Muche AA, Olayemi OO, Gete YK. Prevalence and determinants of gestational diabetes mellitus in Africa based on the updated international diagnostic criteria: a systematic review and meta-analysis. Arch Public Health 2019; 77:36. [PMID: 31402976 PMCID: PMC6683510 DOI: 10.1186/s13690-019-0362-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 07/04/2019] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Gestational diabetes mellitus (GDM) is a major public health problem and threat to maternal and child health in Africa. No prior review has been conducted in Africa using the updated GDM diagnostic criteria. Therefore, this review aimed to estimate the pooled prevalence and determinants of GDM in Africa by using current international diagnostic criteria. METHODS A systematic review and meta-analysis was conducted by comprehensive search of the published studies in Africa. Electronic databases (PubMed, Scopus, Cochrane Library, EMBASE, Google Scholar, CINAHL, Web of Science, Science direct and African Journals Online) were searched using relevant search terms. Data were extracted on an excel sheet and Stata/ SE 14.0 software was used to perform the meta-analysis. Heterogeneity of included studies were assessed using I 2 and Q test statistics. I2 > 50% and Q test with its respective p-value < 0.05 were suggestive for the presence of a significant heterogeneity. Publication bias was assessed using the Egger's regression test and funnel plot. Subgroup and sensitivity analyses were done. A random effects model was used to estimate the pooled prevalence of GDM and odds ratio (OR) with 95% confidence interval (CI). RESULT A total of 23 studies were included in the final analysis. The pooled prevalence of GDM in Africa was 13.61% (95% CI: 10.99, 16.23; I2 = 96.1%), and 14.28% (95% CI, 11.39, 17.16; I2 = 96.4%) in the sub-Saharan African region. The prevalence was highest in Central Africa 20.4% (95% CI, 1.55, 38.54), and lowest in Northern Africa 7.57% (95% CI, 5.89, 9.25) sub- regions. Overweight and obesity, macrosomia, family history of diabetes, history of stillbirth, history of abortion, chronic hypertension and history of previous GDM had positively associated with GDM. CONCLUSIONS The prevalence of GDM is high in Africa. Being overweighed and/or obese, ever had macrocosmic baby, family history of diabetes, history of stillbirth, history of abortion or miscarriage, chronic hypertension and history of previous GDM were factors associated with GDM. Preventing overweighed and obese, giving due attention to women having high-risk cases for GDM in pregnancy are strongly recommended to mitigate the burden. SYSTEMATIC REVIEW REGISTRATION PROSPERO (2018:CRD42018116843).
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Affiliation(s)
- Achenef Asmamaw Muche
- Department of Obstetrics and Gynaecology, College of Medicine, Pan African University Life and Earth Sciences Institutes, University of Ibadan, Ibadan, Nigeria
- Department of Epidemiology and Biostatistics, Institute of Public Health, University of Gondar, Gondar, Ethiopia
| | - Oladapo O. Olayemi
- Department of Obstetrics and Gynaecology, College of Medicine, University College Hospital, University of Ibadan, Ibadan, Nigeria
| | - Yigzaw Kebede Gete
- Department of Epidemiology and Biostatistics, Institute of Public Health, University of Gondar, Gondar, Ethiopia
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Dickson LM, Buchmann EJ, Janse van Rensburg C, Norris SA. Accuracy of five plasma calibrated glucometers to screen for and diagnose gestational diabetes mellitus in a low resource clinic setting. J Clin Transl Endocrinol 2019; 16:100174. [PMID: 30923676 PMCID: PMC6424057 DOI: 10.1016/j.jcte.2018.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 11/02/2018] [Accepted: 12/07/2018] [Indexed: 01/18/2023] Open
Abstract
AIMS We investigated the clinical and analytic accuracy of five plasma calibrated glucometers, the use of which is advocated by the World Health Organisation and the International Federation of Gynaecology and Obstetrics, to screen for and diagnose gestational diabetes mellitus (GDM) in low resource settings. METHODS 592 consecutive black African women underwent a 75 g oral glucose tolerance test (OGTT) at 24-28 weeks gestation at an urban South African community health clinic. Capillary glucose was measured by one of five glucometer brands, each paired with a routine laboratory hexokinase method of plasma glucose measurement. The laboratory results served as the gold standard reference test for GDM diagnosis. World Health Organisation GDM diagnostic thresholds were applied to glucometer and laboratory results. RESULTS Glucometer and laboratory determined GDM prevalence was 75/592 (12.7%) and 30/592 (5.1%) with an elevated fasting glucose diagnostic in 64/75 (85%) and 24/30 (80%) of cases respectively. The proportion of glucometer results fulfilling ISO 15197:2013 recommended analytic accuracy at fasting, 60, and 120 min of the OGTT was 92.4%, 49.8% and 61.5%, with Bland Altman method revealing a positive glucometer bias of 0.22 mmol/l (-0.69-1.12 mmol/l), 0.96 mmol/l (-0.65-2.56 mmol/l) and 0.73 mmol/l (-0.73-2.19 mmol/l) respectively. Only three of the glucometer brands evaluated fulfilled ISO 15197:2013 analytic accuracy requirements and this was only achieved at fasting. All glucometers tested were inaccurate at one and two hours of the OGTT. CONCLUSIONS Not all glucometers may be suitable for GDM screening as only three were accurate compared to the reference test and then only at fasting of the OGTT. Importantly, laboratory fasting glucose was diagnostic of GDM in 80% of cases in this study population.
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Affiliation(s)
- Lynnsay M. Dickson
- FCP(SA), MRC Developmental Pathways to Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, Johannesburg, South Africa
| | - Eckhart J. Buchmann
- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, Johannesburg, South Africa
| | - Charl Janse van Rensburg
- Biostatistics Unit, South African Medical Research Council, 1 Soutpansberg Road, Pretoria, South Africa
| | - Shane A. Norris
- MRC Developmental Pathways to Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, Johannesburg, South Africa
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Dickson LM, Buchmann EJ, Janse Van Rensburg C, Norris SA. The impact of differences in plasma glucose between glucose oxidase and hexokinase methods on estimated gestational diabetes mellitus prevalence. Sci Rep 2019; 9:7238. [PMID: 31076622 PMCID: PMC6510785 DOI: 10.1038/s41598-019-43665-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 04/23/2019] [Indexed: 12/20/2022] Open
Abstract
We evaluated the extent of measurement discordance between glucose oxidase and hexokinase laboratory methods and the effect of this on estimated gestational diabetes mellitus (GDM) prevalence in a routine clinical setting. 592 consecutive urban African women were screened for GDM. Paired venous specimens were submitted to two independent calibrated laboratories that used either method to measure plasma glucose concentrations. World Health Organisation diagnostic criteria were applied. GDM prevalence determined by the glucose oxidase and hexokinase methods was 6.9% and 5.1% respectively. The overall GDM prevalence was 9%. Only 34% of GDM positive diagnoses were common to both laboratory methods. Bland Altman plots identified a bias of 0.2 mmol/l between laboratory methods. Plasma glucose concentrations measured by the glucose oxidase method were more platykurtic in distribution. Low diagnostic agreement between laboratory methods was further indicated by a Cohen's kappa of 0.48 (p < 0.001). Reports of GDM prevalence using either the glucose oxidase or hexokinase laboratory methods may not be truly interchangeable or directly comparable.
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Affiliation(s)
- Lynnsay M Dickson
- MRC Developmental Pathways to Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, Johannesburg, South Africa.
| | - Eckhart J Buchmann
- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, Johannesburg, South Africa
| | - Charl Janse Van Rensburg
- Biostatistics Unit, South African Medical Research Council, 1 Soutpansberg Road, Pretoria, South Africa
| | - Shane A Norris
- MRC Developmental Pathways to Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, Johannesburg, South Africa
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Coetzee A, van de Vyver M, Hoffmann M, Hall DR, Mason D, Conradie M. A comparison between point-of-care testing and venous glucose determination for the diagnosis of diabetes mellitus 6-12 weeks after gestational diabetes. Diabet Med 2019; 36:591-599. [PMID: 30663133 DOI: 10.1111/dme.13903] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/17/2019] [Indexed: 01/17/2023]
Abstract
AIM To evaluate point-of-care-testing (POCT) for the diagnosis of Type 2 diabetes mellitus 6-12 weeks post-partum in women with gestational diabetes (GDM). METHODS Post-partum glucose assessment (75-mg oral glucose tolerance test, OGTT) was performed prospectively in 122 women with GDM (1 November 2015 to 1 November 2017) at Tygerberg Hospital, Cape Town, South Africa. Individuals with known pre-existing diabetes were excluded. The accuracy and clinical utility of POCT (capillary finger-prick) were compared with laboratory plasma glucose (hexokinase and glucokinase methods). The OGTT consisted of two time points (fasting and 2 h) during which concurrent glucose samples (POCT and laboratory) were obtained. Bland-Altman plots and paired analysis were used to assess the analytical accuracy of POCT, whereas its diagnostic performance was determined using positive and negative predictive values to calculate specificity and sensitivity. RESULTS Spearman's ranked correlation analysis indicated a strong association between POCT and laboratory glucose values at both OGTT time points (fasting, r = 0.95, P < 0.0001; 2 h, r = 0.88, P < 0.0001). Thirty-six women were diagnosed with Type 2 diabetes based on gold standard laboratory glucose levels (fasting > 7 mmol/l; 2 h > 11.1 mmol/l). POCT correctly identified Type 2 diabetes in 78% of women (28 of 36) with a positive predictive value of 89.3% and a negative predictive value of 96.7% at the fasting time point. The sensitivity and specificity of POCT to diagnose Type 2 diabetes were 89% (fasting), 85.7% (2 h) and 96.7% (fasting), 98.5% (2 h) respectively. POCT proved less sensitive to diagnose pre-diabetes (69%) but displayed satisfactory specificity (92%) at both time points assessed. CONCLUSION POCT accurately identifies women with Type 2 diabetes 6-12 weeks after GDM.
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Affiliation(s)
- A Coetzee
- Department of Medicine, Stellenbosch University, Cape Town, South Africa
- Tygerberg Academic Hospital, Cape Town, South Africa
| | - M van de Vyver
- Department of Medicine, Stellenbosch University, Cape Town, South Africa
| | - M Hoffmann
- Department of Pathology, Stellenbosch University and the National Health Laboratory Service, Cape Town, South Africa
| | - D R Hall
- Tygerberg Academic Hospital, Cape Town, South Africa
- Department of Obstetrics and Gynaecology, Stellenbosch University, Cape Town, South Africa
| | - D Mason
- Tygerberg Academic Hospital, Cape Town, South Africa
- Department of Obstetrics and Gynaecology, Stellenbosch University, Cape Town, South Africa
| | - M Conradie
- Department of Medicine, Stellenbosch University, Cape Town, South Africa
- Tygerberg Academic Hospital, Cape Town, South Africa
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Meharry PM, Tengera O, Rulisa S, Byambu AK, Nietert PJ, Byiringiro S, Habimana C, Gishoma C, King LR. Prevalence of gestational diabetes mellitus among women attending antenatal care at public health centers in Rwanda. Diabetes Res Clin Pract 2019; 151:252-259. [PMID: 30946850 PMCID: PMC6941349 DOI: 10.1016/j.diabres.2019.03.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/04/2019] [Accepted: 03/27/2019] [Indexed: 01/16/2023]
Abstract
AIM This study aimed to determine the prevalence of gestational diabetes mellitus (GDM) among women attending public health centers in Rwanda using the World Health Organization (WHO) 2013 diagnostic criteria. METHODS A cross-sectional analysis was performed on 281 pregnant women attending antenatal care at urban and rural public health centers. Diagnostic testing was performed between 24 and 32 weeks gestation using a 75 g oral glucose tolerance test. Venous plasma glucose was centrifuged within one hour and measured at one of two laboratories. Descriptive statistics were used. RESULTS GDM prevalence was 3.2%, (4.28% urban and 2.13% rural). Women diagnosed with GDM were older, had higher BMI, hypertension, and glycosuria of ≥2+. None with HIV (14/281) had GDM. All women reported birth outcomes. All women with GDM (9/281) had normal glucose values postpartum and therefore it is unlikely that any women had overt diabetes. CONCLUSION This study adds important information about the GDM prevalence in Rwanda, which is a resource-limited country. Although the prevalence of 3.2% was low, significant risk factors for GDM were identified. We anticipate that the risk factors for developing GDM will increase in the near future, similar to the global trend of obesity and diabetes, necessitating continued research and education in this important condition that carries a double burden of disease to both mothers and infants.
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Affiliation(s)
- Pamela M Meharry
- University of Rwanda, Rwanda; University of Illinois, Chicago, United States.
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Chivese T, Norris SA, Levitt NS. High prevalence of cardiovascular risk factors and insulin resistance 6 years after hyperglycemia first detected in pregnancy in Cape Town, South Africa. BMJ Open Diabetes Res Care 2019; 7:e000740. [PMID: 31803480 PMCID: PMC6887495 DOI: 10.1136/bmjdrc-2019-000740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/24/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To investigate the prevalence and associated cardiovascular risk factors 6 years after hyperglycemia first detected in pregnancy (HFDP) in Cape Town, South Africa. RESEARCH DESIGN AND METHODS Data were collected during the index pregnancy from all women diagnosed with HFDP at a major referral hospital in Cape Town. Participants were evaluated 6 years later using a cross-sectional study. At follow-up participants had a 75 g oral glucose tolerance test, fasting lipogram, blood pressure and anthropometric measurements, and a fieldworker administered the questionnaire. We used the Adult Treatment Panel III criteria for the diagnosis of metabolic syndrome and individual risk factors. Insulin resistance was assessed using the homeostatic model of insulin resistance. RESULTS At follow-up 220 women were reviewed. Their mean age at follow-up was 37.2 (SD 6.0) years. The prevalence of cardiovascular disease (CVD) risk factors was 60.9% (95% CI 54.3 to 67.2) for metabolic syndrome, 75% (95% CI 65.9 to 82.3) for insulin resistance, 62.3% (95% CI 55.6 to 68.5) for dysglycemia, 41.4% (95% CI 35.0 to 48.0) for raised blood pressure, and 74.6% (95% CI 683 to 79.9) for dyslipidemia. Women with diabetes in pregnancy compared with those with gestational diabetes during the index pregnancy had a higher prevalence of metabolic syndrome (74.3% vs 54.7%, p=0.010) and dysglycemia (88.6% vs 50.0%, p<0.001) at follow-up. Lower school education attainment, having a subsequent pregnancy, waist circumference at follow-up, and fasting blood glucose at HFDP diagnosis were associated with metabolic syndrome. CONCLUSION We found a high prevalence of CVD risk factors in South African women within 6 years of HFDP, which highlights the need to develop and evaluate interventions optimizing the cardiometabolic health of this vulnerable group. The main limitations of our research are the lack of a comparative group of women without HFDP and that we did not assess for CVD risk factors before HFDP.
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Affiliation(s)
- Tawanda Chivese
- Chronic Disease Initiative for Africa, Faculty of Medicine and Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Parktown, Gauteng, South Africa
- Population Medicine, College of Medicine, Qatar University, Doha, Qatar
| | - Shane A Norris
- SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, Parktown, Gauteng, South Africa
- School of Human Development and Health, and NIHR Southampton Biomedical Research Centre, University of Southampton, Southampton, Hampshire, UK
| | - Naomi S Levitt
- Chronic Disease Initiative for Africa, Faculty of Medicine and Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa
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Dias S, Adam S, Van Wyk N, Rheeder P, Louw J, Pheiffer C. Global DNA methylation profiling in peripheral blood cells of South African women with gestational diabetes mellitus. Biomarkers 2018; 24:225-231. [PMID: 30369264 DOI: 10.1080/1354750x.2018.1539770] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background/Objective: Recently, several studies have reported that DNA methylation changes in tissue are reflected in blood, sparking interest in the potential use of global DNA methylation as a biomarker for gestational diabetes mellitus (GDM). This study investigated whether global DNA methylation is associated with GDM in South African women. Methods: Global DNA methylation was quantified in peripheral blood cells of women with (n = 63) or without (n = 138) GDM using the MDQ1 Imprint® DNA Quantification Kit. Results: Global DNA methylation levels were not different between women with or without GDM and were not associated with fasting glucose or insulin concentrations. However, levels were 18% (p = 0.012) higher in obese compared to non-obese pregnant women and inversely correlated with serum adiponectin concentrations (p = 0.005). Discussion: Contrary to our hypothesis, global DNA methylation was not associated with GDM in our population. These preliminary findings suggest that despite being a robust marker of overall genomic methylation that offers opportunities as a biomarker, global DNA methylation profiling may not offer the resolution required to detect methylation differences in the peripheral blood cells of women with GDM. Moreover, global DNA methylation in peripheral blood cells may not reflect changes in placental tissue. Further studies in a larger sample are required to explore the candidacy of a more targeted approach using gene-specific methylation as a biomarker for GDM in our population.
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Affiliation(s)
- Stephanie Dias
- a South African Medical Research Council , Biomedical Research and Innovation Platform (BRIP) , Tygerberg , South Africa.,b Department of Obstetrics and Gynecology , University of Pretoria , Pretoria , South Africa
| | - Sumaiya Adam
- b Department of Obstetrics and Gynecology , University of Pretoria , Pretoria , South Africa
| | - Nastasja Van Wyk
- a South African Medical Research Council , Biomedical Research and Innovation Platform (BRIP) , Tygerberg , South Africa
| | - Paul Rheeder
- c Department of Internal Medicine, Faculty of Health Sciences , University of Pretoria , Pretoria , South Africa
| | - Johan Louw
- a South African Medical Research Council , Biomedical Research and Innovation Platform (BRIP) , Tygerberg , South Africa.,d Department of Biochemistry and Microbiology , University of Zululand , Kwa-Dlangezwa , South Africa
| | - Carmen Pheiffer
- a South African Medical Research Council , Biomedical Research and Innovation Platform (BRIP) , Tygerberg , South Africa.,e Division of Medical Physiology, Faculty of Health Sciences , Stellenbosch University , Tygerberg , South Africa
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