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Walkowiak MJ, Jamka M, Walkowiak MP, Gutaj P, Wender-Ożegowska E. Seasonal Pattern in Gestational Diabetes Mellitus in Poland: A Retrospective Cohort Study. BIOLOGY 2023; 12:1376. [PMID: 37997974 PMCID: PMC10669897 DOI: 10.3390/biology12111376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/20/2023] [Accepted: 10/24/2023] [Indexed: 11/25/2023]
Abstract
The existing literature does not address the question of the seasonal impact on pregnancy in Central-Eastern Europe; therefore, this study was designed to investigate the seasonal variation in gestational diabetes mellitus (GDM) based on a recent Polish sample. The data of 30,205 newborns from singleton pregnancies and their mothers, including the date and gestational age of birth, neonatal sex and weight, maternal age and parity, mode of delivery, ethnicity, and a detailed list of comorbidities (including GDM), were retrospectively analysed. The prevalence of GDM was significantly (p < 0.0001) lower in spring (14.71%) than in the other seasons (16.78%). A higher incidence of GDM was observed for mothers who underwent an oral glucose tolerance test from June to August compared to those who were tested from December to February (17.34% vs. 14.75%, p < 0.0001). Similarly, there were significant differences between seasons with higher and lower insolation. The regression analysis revealed that seasonal patterns were significantly associated with the prevalence of GDM. In conclusion, this large retrospective cohort study demonstrated seasonal changes in GDM risk. The observed seasonal patterns may equally refer to mothers of babies born at term and prematurely. Further research concerning GDM risk and other seasonal and gender associations is warranted.
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Affiliation(s)
- Marek J. Walkowiak
- Department of Reproduction, Poznan University of Medical Sciences, Polna Str. 33, 60-535 Poznan, Poland;
| | - Małgorzata Jamka
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Szpitalna Str. 27/33, 60-572 Poznan, Poland;
| | - Marcin Piotr Walkowiak
- Department of Preventive Medicine, Poznan University of Medical Sciences, Święcickiego Str. 6, 60-781 Poznan, Poland;
| | - Paweł Gutaj
- Department of Reproduction, Poznan University of Medical Sciences, Polna Str. 33, 60-535 Poznan, Poland;
| | - Ewa Wender-Ożegowska
- Department of Reproduction, Poznan University of Medical Sciences, Polna Str. 33, 60-535 Poznan, Poland;
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Stalheim AM, Iversen MM, Jenum AK, Sletner L, Stafne SN, Qvigstad E, Sagedal L, Nilsen RM, Aasheim V, Strandberg RB. Seasonal variation in gestational diabetes mellitus among women in Norway: a national population-based study. BMJ Open 2023; 13:e063725. [PMID: 36918247 PMCID: PMC10016255 DOI: 10.1136/bmjopen-2022-063725] [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] [Indexed: 03/15/2023] Open
Abstract
OBJECTIVES Previous research on seasonal variation in the incidence of gestational diabetes mellitus (GDM) has shown inconclusive results. Furthermore, little is known about whether a seasonal variation in GDM might be associated with the maternal country of birth. We examined whether there was seasonal variation in GDM incidence by the maternal country background. DESIGN National population-based registry study. SETTING AND PARTICIPANTS We used national population-based data from the Medical Birth Registry of Norway (MBRN), n=1 443 857 (1990-2016) and data from four merged community-based studies (4GDM) with universal screening for GDM, n=2 978 (2002-2013). OUTCOME MEASURES The association between season of pregnancy onset with incidence of GDM was examined separately in both datasets using logistic regression analyses, stratified by the mother's country background using two broad geographical categories (MBRN: Norwegian and immigrant; 4GDM: European and African/Asian ethnicity). Winter season was used as reference category. RESULTS The incidence of GDM in MBRN was highest when the pregnancy started during the winter (Norwegian-born: 1.21%; immigrants: 3.32%) and lowest when pregnancy started during the summer for both Norwegian and immigrant women (Norwegian-born: 1.03% (OR 0.85, 95% CI 0.81 to 0.98); immigrants: 2.99% (OR 0.90, 95% CI 0.84 to 0.96)). The 4GDM data showed that women with European ancestry had the highest incidence of GDM when pregnancy started during autumn (10.7%, OR 1.01, 95% CI 0.69 to 1.46) and winter (10.6%), while ethnic African and Asian women had the highest incidence when pregnancy onset was during the summer (15.3%, OR 1.17, 95% CI 0.54 to 2.53). CONCLUSIONS Based on national population-based data, this study suggests that GDM incidence varies by season in both Norwegian-born and immigrant women. The 4GDM dataset did not show a clear seasonal variation in GDM incidence, possibly due to the relatively small sample. Causes for the seasonal variation in GDM should be explored further.
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Affiliation(s)
- Astrid Melteig Stalheim
- Department of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway
- Division of Obstetrics and Gynaecology, Oslo University Hospital, Oslo, Norway
| | | | - Anne Karen Jenum
- Department of General Practice, General Practice Unit (AFE), Insitute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Line Sletner
- Department for Paediatric and Adolescent Medicine, Akershus University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Signe N Stafne
- Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Clinical services, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Elisabeth Qvigstad
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | - Linda Sagedal
- Department of Obstetrics and Gynecology, Sørlandet Hospital, Kristiansand, Norway
| | - Roy Miodini Nilsen
- Department of Health and Functioning, Western Norway University of Applied Sciences, Bergen, Norway
| | - Vigdis Aasheim
- Department of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Ragnhild B Strandberg
- Department of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway
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Jamieson EL, Dimeski G, Flatman R, Hickman PE, Ross Dallas Jones G, V Marley J, David McIntyre H, McNeil AR, Nolan CJ, Potter JM, Sweeting A, Ward P, Williams P, Rita Horvath A. Oral glucose tolerance test to diagnose gestational diabetes mellitus: Impact of variations in specimen handling. Clin Biochem 2022; 115:33-48. [PMID: 36244469 DOI: 10.1016/j.clinbiochem.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/10/2022] [Accepted: 10/04/2022] [Indexed: 11/03/2022]
Abstract
To improve birth outcomes, all pregnant women without known diabetes are recommended for an oral glucose tolerance test (OGTT) to screen for hyperglycaemia in pregnancy (diabetes in pregnancy or gestational diabetes mellitus (GDM)). This narrative review presents contemporary approaches to minimise preanalytical glycolysis in OGTT samples with a focus on GDM diagnosis using criteria derived from the Hyperglycemia and Adverse Pregnancy Outcomes (HAPO) study. The challenges of implementing each approach across a diverse Australian healthcare setting were explored. Many Australian sites currently collect and transport OGTT samples at ambient temperature in sodium fluoride (NaF) tubes which is likely to lead to missed diagnosis of GDM in a significant proportion of cases. Alternative preanalytical solutions should be pragmatic and tailored to individual settings and as close as possible to the preanalytical conditions of the HAPO study for correct interpretation of OGTT results. Rapid centrifugation of barrier tubes to separate plasma could be suitable in urban settings provided time to centrifugation is strictly controlled. Tubes containing NaF and citrate could be useful for remote or resource poor settings with long delays to analysis but the impact on the interpretation of OGTT results should be carefully considered. Testing venous blood glucose at the point-of-care bypasses the need for glycolytic inhibition but requires careful selection of devices with robust analytical performance. Studies to evaluate the potential error of each solution compared to the HAPO protocol are required to assess the magnitude of misdiagnosis and inform clinicians regarding the potential impact on patient safety and healthcare costs.
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Eberle C, Stichling S. Environmental health influences in pregnancy and risk of gestational diabetes mellitus: a systematic review. BMC Public Health 2022; 22:1572. [PMID: 35982427 PMCID: PMC9389831 DOI: 10.1186/s12889-022-13965-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 06/27/2022] [Indexed: 11/10/2022] Open
Abstract
Background Gestational diabetes mellitus (GDM) is one of the most common pregnancy complications globally. Environmental risk factors may lead to increased glucose levels and GDM, which in turn may affect not only the health of the mother but assuming hypotheses of "fetal programming", also the health of the offspring. In addition to traditional GDM risk factors, the evidence is growing that environmental influences might affect the development of GDM. We conducted a systematic review analyzing the association between several environmental health risk factors in pregnancy, including climate factors, chemicals and metals, and GDM. Methods We performed a systematic literature search in Medline (PubMed), EMBASE, CINAHL, Cochrane Library and Web of Science Core Collection databases for research articles published until March 2021. Epidemiological human and animal model studies that examined GDM as an outcome and / or glycemic outcomes and at least one environmental risk factor for GDM were included. Results Of n = 91 studies, we classified n = 28 air pollution, n = 18 persistent organic pollutants (POP), n = 11 arsenic, n = 9 phthalate n = 8 bisphenol A (BPA), n = 8 seasonality, n = 6 cadmium and n = 5 ambient temperature studies. In total, we identified two animal model studies. Whilst we found clear evidence for an association between GDM and air pollution, ambient temperature, season, cadmium, arsenic, POPs and phthalates, the findings regarding phenols were rather inconsistent. There were clear associations between adverse glycemic outcomes and air pollution, ambient temperature, season, POPs, phenols, and phthalates. Findings regarding cadmium and arsenic were heterogeneous (n = 2 publications in each case). Conclusions Environmental risk factors are important to consider in the management and prevention of GDM. In view of mechanisms of fetal programming, the environmental risk factors investigated may impair the health of mother and offspring in the short and long term. Further research is needed. Supplementary Information The online version contains supplementary material available at 10.1186/s12889-022-13965-5.
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Affiliation(s)
- Claudia Eberle
- Medicine With Specialization in Internal Medicine and General Medicine, Hochschule Fulda, University of Applied Sciences, Leipziger Strasse 123, 36037, Fulda, Germany.
| | - Stefanie Stichling
- Medicine With Specialization in Internal Medicine and General Medicine, Hochschule Fulda, University of Applied Sciences, Leipziger Strasse 123, 36037, Fulda, Germany
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5
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Prevalence of gestational diabetes mellitus and associated factors in Shenzhen, China: a retrospective analysis of 70,427 pregnant women. Int J Diabetes Dev Ctries 2022. [DOI: 10.1007/s13410-022-01126-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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He MZ, Kloog I, Just AC, Gutiérrez-Avila I, Colicino E, Téllez-Rojo MM, Luisa Pizano-Zárate M, Tamayo-Ortiz M, Cantoral A, Soria-Contreras DC, Baccarelli AA, Wright RO, Yitshak-Sade M. Intermediate- and long-term associations between air pollution and ambient temperature and glycated hemoglobin levels in women of child bearing age. ENVIRONMENT INTERNATIONAL 2022; 165:107298. [PMID: 35597113 PMCID: PMC9233109 DOI: 10.1016/j.envint.2022.107298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/07/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Air pollution has been linked to obesity while higher ambient temperatures typically reduce metabolic demand in a compensatory manner. Both relationships may impact glucose metabolism, thus we examined the association between intermediate- and long-term exposure to fine particulate matter (PM2.5) and ambient temperature and glycated hemoglobin(HbA1c), a longer-term marker of glucose control. METHODS We assessed 3-month, 6-month, and 12-month average air pollution and ambient temperature at 1-km2 spatial resolution via satellite remote sensing models (2013-2019), and assessed HbA1c at four, six, and eight years postpartum in women enrolled in the Programming Research in Obesity, Growth, Environment and Social Stressors (PROGRESS) cohort based in Mexico City. PM2.5 and ambient temperature were matched to participants' addresses and confirmed by GPS tracker. Using linear mixed-effects models, we examined the association between 3-month, 6-month, and 12-month average PM2.5 and ambient temperature with repeated log-transformed HbA1c values. All models included a random intercept for each woman and were adjusted for calendar year, season, and individual-level confounders (age, marital status, smoking, alcohol consumption level, and education level). RESULTS We analyzed 1,265 HbA1c measurements of 484 women. Per 1 µg/m3 increase in 3-month and 6-month PM2.5, HbA1c levels increased by 0.28% (95% confidence interval (95 %CI): 0.14, 0.42%) and 0.28% (95 %CI: 0.04, 0.52%) respectively. No association was seen for 12-month average PM2.5. Per 1 °C increase in ambient temperature, HbA1c levels decreased by 0.63% (95 %CI: -1.06, -0.21%) and 0.61% (95 %CI: -1.08, -0.13%), while the 12-month average again is not associated with HbA1c. CONCLUSIONS Intermediate-term exposure to PM2.5 and ambient temperature are associated with opposing changes in HbA1c levels, in this region of high PM2.5 and moderate temperature fluctuation. These effects, measurable in mid-adult life, may portend future risk of type 2 diabetes and possible heart disease.
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Affiliation(s)
- Mike Z He
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States.
| | - Itai Kloog
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States; Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Allan C Just
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Iván Gutiérrez-Avila
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Martha M Téllez-Rojo
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - María Luisa Pizano-Zárate
- Nutrition and Bioprogramming Coordination, National Institute of Perinatology, Mexico City, Mexico; UMF 4, South Delegation of the Federal District, Mexican Social Security Institute (IMSS), Mexico City, Mexico
| | - Marcela Tamayo-Ortiz
- Occupational Health Research Unit, Mexican Social Security Institute (IMSS), Mexico City, Mexico
| | | | - Diana C Soria-Contreras
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, United States
| | - Robert O Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Maayan Yitshak-Sade
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, United States
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Hou WH, Wu JL, Lu CL, Sulistyorini L, Isfandiari MA, Chiu CT, Li CY. Associations of hyperglycemic emergency and severe hypoglycemia incidences with seasonality and ambient temperature among pregnant women with diabetes: a nested case-control study in Taiwan. Environ Health Prev Med 2022; 27:11. [PMID: 35288489 PMCID: PMC9093638 DOI: 10.1265/ehpm.22-00003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background Associations of acute glycemic complications with season and ambient temperature have been reported in general population with diabetes. However, little is known about the risks of acute glycemic complications in relation to season and ambient temperature in pregnant women, who are likely to be even more vulnerable. This work aimed to investigate the associations of season and ambient temperature with pregnancies complicated with hyperglycemia emergency or severe hypoglycemia. Methods Two separate case-control studies were nested within 150,153 pregnancies by women with type 1, type 2, or gestational diabetes between 2009 and 2014 in Taiwan. Hyperglycemia emergency (mainly diabetic ketoacidosis and hyperosmolar hyperglycemic state) and severe hypoglycemia occurred in 77 and 153 diabetic pregnancies (cases), respectively. Ten control pregnancies were randomly selected for each case by matching each case pregnancy on type of diabetes (i.e., T1DM, T2DM, or GDM), maternal age on the date of acute glycemic complication occurrence (i.e., index date), and “length of gestation at risk” (i.e., period between conception and index date). Meteorological parameters were retrieved from 542 meteorological monitoring stations across Taiwan during 2008–2014. Conditional logistic regression analysis with generalized estimation equation was separately performed to estimate the covariate adjusted odds ratios (ORs) of each of the two acute glycemic complications in association with season and ambient temperature within 30 days prior to the index date. Results Compared to summer, winter season was associated with a significantly elevated risk of severe hypoglycemia with an OR of 1.74 (95% confidence interval (CI) 1.08–2.79). The OR of hyperglycemic emergency was also elevated in winter season at OR of 1.88, but the significance is only marginal (95% CI 0.97–3.64, p = 0.0598). Subgroup analyses further noted that such seasonal variation was also observed in pregnancies with pre-pregnancy type 1 diabetes and gestational diabetes. On the other hand, ambient temperature was not significantly associated with the two acute glycemic complications. Conclusions A moderately but significantly elevated risk of severe hypoglycemia was found in pregnant women with diabetes during winter season, and such increased risk was more evident in pregnancies with T1DM. Supplementary information The online version contains supplementary material available at https://doi.org/10.1265/ehpm.22-00003.
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Affiliation(s)
- Wen-Hsuan Hou
- Department of Physical Medicine and Rehabilitation, Taipei Medical University Hospital
| | - Jia-Ling Wu
- Department of Public Health, College of Medicine, National Cheng Kung University
| | - Chin-Li Lu
- Graduate Institute of Food Safety, College of Agriculture and Natural Resources, National Chung Hsing University
| | - Lilis Sulistyorini
- Department of Environmental Health, Faculty of Public Health, Universitas Airlangga
| | | | - Chang-Ta Chiu
- Department of Dentistry, An Nan Hospital, China Medical University
| | - Chung-Yi Li
- Department of Public Health, College of Medicine, National Cheng Kung University
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Khoshhali M, Ebrahimpour K, Shoshtari-Yeganeh B, Kelishadi R. Systematic review and meta-analysis on the association between seasonal variation and gestational diabetes mellitus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:55915-55924. [PMID: 34490580 DOI: 10.1007/s11356-021-16230-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Recently, there is growing evidence that ambient temperature and seasonal changes are related to the incidence of gestational diabetes mellitus (GDM). Thereby, this study was conducted to evaluate the association between seasonal changes and ambient temperature and GDM. We conducted a systematic search in PubMed, ISI Web of Science, Scopus, Google Scholar, and Cochrane Collaboration for human studies available until the end of 2020. We used the following keywords to identify relevant articles: "Diabetes, Gestational" (MeSH), "Glucose Tolerance Test" (MeSH), "Glucose intolerance" (MeSH), "Pregnancy outcome" (MeSH), "Birth outcome", "Seasons" (MeSH), "Weather" (MeSH), "Ambient Temperature," "Climate Change" (MeSH). Meta-analyses by using STATA software were conducted for analyzing data. Due to the high heterogeneity between included studies, a random-effects model was used. Subgroup analysis, meta-regression, and sensitivity analysis were used to define a source of heterogeneity. We found 13 studies related to the association between ambient temperature and season changes and GDM, which 11 of them were included in meta-analyses. Despite inconsistencies in outcome assessment across studies, we found a significant positive association between seasons of GDM screening and risk of GDM (pooled OR=1.12; 95% CI (1.03, 1.21)). The funnel plot and Egger's test showed that there was no significant publication bias among these studies (p=0.51). In general, season changes showed a significant positive relationship with prevalence of GDM. However, due to the unknown exact mechanism on this association, further studies should be conducted.
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Affiliation(s)
- Mehri Khoshhali
- Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Karim Ebrahimpour
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Bahareh Shoshtari-Yeganeh
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Roya Kelishadi
- Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
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Fox RA, Patient CJ, Aiken AR, Meek CL, Aiken CE. Temporal variations in maternal treatment requirements and early neonatal outcomes in patients with gestational diabetes. Diabet Med 2021; 38:e14596. [PMID: 33963609 PMCID: PMC10782837 DOI: 10.1111/dme.14596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 04/05/2021] [Indexed: 11/28/2022]
Abstract
AIMS There is seasonal variation in the incidence of gestational diabetes (GDM) and delivery outcomes of affected patients. We assessed whether there was also evidence of temporal variation in maternal treatment requirements and early neonatal outcomes. METHODS We performed a retrospective analysis of women diagnosed with GDM (75 g oral glucose tolerance test, 0 h ≥ 5.1; 1 h ≥ 10.0; 2 h ≥ 8.5 mmol/L) in a UK tertiary obstetric centre (2015-2019) with a singleton infant. Data regarding demographic characteristics, total insulin requirements and neonatal outcomes were extracted from contemporaneous electronic medical records. Linear/logistic regression models using month of the year as a predictor of outcomes were used to assess annual variation. RESULTS In all, 791 women (50.6% receiving pharmacological treatment) and 790 neonates were included. The likelihood of requiring insulin treatment was highest in November (p < 0.05). The average total daily insulin dose was higher at peak (January) compared to average by 19 units/day (p < 0.05). There was no temporal variation in neonatal intensive care admission, or neonatal capillary blood glucose. However, rates of neonatal hypoglycaemia (defined as <2.6 mmol/L) were highest in December (40% above average; p < 0.05). CONCLUSIONS Women with GDM diagnosed in winter are more likely to require insulin treatment and to require higher insulin doses. Neonates born to winter-diagnosed mothers had a corresponding increased risk of neonatal hypoglycaemia. Maternal treatment requirements and neonatal outcomes of GDM vary significantly throughout the year, even in a relatively temperate climate.
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Affiliation(s)
- Rachel A. Fox
- School of Clinical Medicine, Addenbrooke’s Hospital, Cambridge, UK
| | - Charlotte J. Patient
- School of Clinical Medicine, Addenbrooke’s Hospital, Cambridge, UK
- Department of Obstetrics and Gynaecology, Rosie Hospital, Cambridge University Hospitals, Cambridge, UK
| | - Abigail R. Aiken
- LBJ School of Public Affairs, University of Texas at Austin, Austin, TX, USA
| | - Claire L. Meek
- Institute of Metabolic Science, Addenbrooke’s Hospital, Cambridge, UK
- Department of Clinical Biochemistry, Cambridge University Hospitals, Addenbrooke’s Hospital, Cambridge, UK
- Wolfson Diabetes and Endocrinology Clinic, Cambridge University Hospitals, Addenbrooke’s Hospital, Cambridge, UK
| | - Catherine E. Aiken
- School of Clinical Medicine, Addenbrooke’s Hospital, Cambridge, UK
- Institute of Metabolic Science, Addenbrooke’s Hospital, Cambridge, UK
- University Department of Obstetrics and Gynaecology, University of Cambridge, NIHR Cambridge Comprehensive Biomedical Research Centre, Cambridge, UK
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10
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Pace NP, Vassallo J, Calleja-Agius J. Gestational diabetes, environmental temperature and climate factors - From epidemiological evidence to physiological mechanisms. Early Hum Dev 2021; 155:105219. [PMID: 33046275 DOI: 10.1016/j.earlhumdev.2020.105219] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Gestational diabetes (GDM) is a common metabolic complication of pregnancy that is generally asymptomatic in its clinical course, although it is potentially associated with a wide range of both maternal and foetal complications. The population prevalence of GDM varies widely, depending on the clinical diagnostic criteria, ethnicity, demographics and background prevalence of type 2 diabetes. Climate variability and environmental temperature have recently come to the forefront as potential direct or indirect determinants of human health. The association between GDM and environmental temperature is complex, and studies have often reported conflicting findings. Epidemiologic studies have shown a direct relation between rising environmental temperature and the risk of both GDM and impaired beta cell function. Seasonal trends in the prevalence of GDM have been reported in several populations, with a higher prevalence in summer months. Multiple mechanisms have been proposed to explain the GDM-temperature correlation. A growing body of evidence supports a link between temperature, energy expenditure and adipose tissue metabolism. Brown adipose tissue thermogenesis, induced by cold temperatures, improves insulin sensitivity. Further biological explanations for the GDM-temperature correlation lie in potential association with low vitamin D levels, which varies according to sunshine exposure. Observational studies are also complicated by lifestyle factors, such as diet and physical activity, that could exhibit seasonal variation. In this review article, we provide a systematic overview of available epidemiological evidence linking environmental temperature and gestational diabetes. Furthermore, the physiological mechanisms that give biological plausibility to association between GDM and temperature are explored. As future climate patterns could drive global changes in GDM prevalence, this knowledge has important implications for both clinicians and researchers.
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Affiliation(s)
- Nikolai Paul Pace
- Department of Anatomy, Faculty of Medicine and Surgery, Biomedical Sciences Building, University of Malta, Msida MSD 2080, Malta.
| | - Josanne Vassallo
- Department of Medicine, Faculty of Medicine and Surgery, Biomedical Sciences Building, University of Malta, Msida MSD 2080, Malta
| | - Jean Calleja-Agius
- Department of Anatomy, Faculty of Medicine and Surgery, Biomedical Sciences Building, University of Malta, Msida MSD 2080, Malta
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11
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van Gemert TE, Moses RG. Climate change and an increased prevalence of gestational diabetes. Aust N Z J Obstet Gynaecol 2021; 60:E14. [PMID: 33043433 DOI: 10.1111/ajo.13211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 06/11/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Tegan E van Gemert
- Department of Endocrinology, The Wollongong Hospital, Wollongong, New South Wales, Australia
| | - Robert G Moses
- Illawarra Diabetes Service, Wollongong, New South Wales, Australia
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12
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Jamieson EL, Spry EP, Kirke AB, Roxburgh C, Atkinson DN, Marley JV. Underestimation of risk for large babies in rural and remote Australia: Time to change plasma glucose collection protocols. JOURNAL OF CLINICAL AND TRANSLATIONAL ENDOCRINOLOGY 2021; 23:100247. [PMID: 33520662 PMCID: PMC7820914 DOI: 10.1016/j.jcte.2020.100247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 11/29/2022]
Abstract
In remote Australia, many women with GDM are missed due to test sample instability. FC tubes stabilise glucose but markedly increase GDM diagnosis in lower-risk women. Adjustment of FC results lowered GDM and improved risk-assessment for a large baby.
Aims Preanalytical glycolysis in oral glucose tolerance tests (OGTT) leads to substantial underestimation of gestational diabetes mellitus (GDM) and hence risk for large-for-gestational-age (LGA) babies. This paper quantified the impact of glycolysis on identification of LGA risk in a prospective rural and remote Australian cohort. Methods For 495 women, OGTT results from room temperature fluoride-oxalate (FLOX) tubes were algorithmically corrected for estimated glycolysis compared to 1) the Hyperglycaemia and Adverse Pregnancy Outcomes (HAPO) study protocol (FLOX tubes in ice-slurry); and 2) room temperature fluoride-citrate (FC) tubes. GDM was defined by International Association of the Diabetes and Pregnancy Study Groups (IADPSG) criteria. Unadjusted and corrected OGTT were related to LGA outcome. Results Correction for FC tubes increased GDM incidence from 9.7% to 44.6%. After correction for HAPO protocol, GDM incidence was 27.7% and prediction of LGA risk (RR 1.82, [1.11–2.99]) improved compared to unadjusted rates (RR 1.12, [0.51–2.47]). To provide similar results for FC tube correction (29.3% GDM; RR 1.81, [1.11–2.96]) required + 0.2 mmol/L adjustment of IADPSG criteria. Conclusions FC tubes present a practical alternative to the HAPO protocol in remote settings but give + 0.2 mmol/L higher glucose readings. Modification of IADPSG criteria would reduce perceived ‘overdiagnosis’ and improve LGA risk-assessment.
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Affiliation(s)
- Emma L Jamieson
- The University of Western Australia, The Rural Clinical School of Western Australia, Building 3 Edith Cowan University Campus, Robertson Drive, PO Box 412, Bunbury 6230, Australia
| | - Erica P Spry
- Kimberley Aboriginal Medical Services, 12 Napier Terrace, Broome 6725, Australia.,The University of Western Australia, The Rural Clinical School of Western Australia, 12 Napier Terrace, PO Box 1377, Broome 6725, Australia
| | - Andrew B Kirke
- The University of Western Australia, The Rural Clinical School of Western Australia, Building 3 Edith Cowan University Campus, Robertson Drive, PO Box 412, Bunbury 6230, Australia
| | - Carly Roxburgh
- The University of Western Australia, The Rural Clinical School of Western Australia, 35 Stirling Terrace, Albany 6330, Australia
| | - David N Atkinson
- The University of Western Australia, The Rural Clinical School of Western Australia, 12 Napier Terrace, PO Box 1377, Broome 6725, Australia
| | - Julia V Marley
- Kimberley Aboriginal Medical Services, 12 Napier Terrace, Broome 6725, Australia.,The University of Western Australia, The Rural Clinical School of Western Australia, 12 Napier Terrace, PO Box 1377, Broome 6725, Australia
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Molina-Vega M, Gutiérrez-Repiso C, Muñoz-Garach A, Lima-Rubio F, Morcillo S, Tinahones FJ, Picón-César MJ. Relationship between environmental temperature and the diagnosis and treatment of gestational diabetes mellitus: An observational retrospective study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:140994. [PMID: 32717465 DOI: 10.1016/j.scitotenv.2020.140994] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Environmental temperature has been described to affect plasma glucose levels after oral glucose tolerance testing (OGTT). AIMS We evaluated the relationship between seasons and environmental temperature and gestational diabetes mellitus (GDM) diagnosis and treatment. METHODS We analyzed data from 2374 women retrospectively. GDM was diagnosed in 473 patients by a 100-g OGTT. OGTT results and needing of insulin therapy were evaluated in relation to seasons and environmental temperature (mean temperature and temperature change) the day of the OGTT and the preceding 14 and 28 days. RESULTS We found significant seasonal differences in the percentage of GDM: 24.4% in summer vs. 15.6% in autumn (p < 0.01). The odds ratio (OR) for being diagnosed with GDM was 1.78 in summer relative to autumn, after controlling for age. A higher mean temperature the day of the OGTT and the preceding 14 and 28 days increased the risk of being diagnosed with GDM the months in which temperature was rising (March-August) but not the months in which temperature was decreasing (September-February). We observed a negative correlation between temperature and fasting glucose and a positive correlation with post-load glucose. Neither the season nor the environmental temperature affected the risk of requiring insulin therapy. CONCLUSIONS There is a higher prevalence of GDM diagnosis at warmer seasons and at rising temperatures the 2-4 weeks prior to the OGTT. The impact of temperature is different between fasting and post-load glucose.
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Affiliation(s)
- Maria Molina-Vega
- Department of Endocrinology and Nutrition, Virgen de la Victoria Universitary Hospital, Malaga, Spain; Research Laboratory, IBIMA, Virgen de la Victoria Universitary Hospital, Malaga, Spain
| | - Carolina Gutiérrez-Repiso
- Research Laboratory, IBIMA, Virgen de la Victoria Universitary Hospital, Malaga, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III, Madrid, Spain
| | - Araceli Muñoz-Garach
- Research Laboratory, IBIMA, Virgen de la Victoria Universitary Hospital, Malaga, Spain
| | - Fuensanta Lima-Rubio
- Research Laboratory, IBIMA, Virgen de la Victoria Universitary Hospital, Malaga, Spain
| | - Sonsoles Morcillo
- Department of Endocrinology and Nutrition, Virgen de la Victoria Universitary Hospital, Malaga, Spain; Research Laboratory, IBIMA, Virgen de la Victoria Universitary Hospital, Malaga, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III, Madrid, Spain.
| | - Francisco J Tinahones
- Research Laboratory, IBIMA, Virgen de la Victoria Universitary Hospital, Malaga, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III, Madrid, Spain.
| | - Mª Jose Picón-César
- Department of Endocrinology and Nutrition, Virgen de la Victoria Universitary Hospital, Malaga, Spain
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Preston EV, Eberle C, Brown FM, James-Todd T. Climate factors and gestational diabetes mellitus risk - a systematic review. Environ Health 2020; 19:112. [PMID: 33168031 PMCID: PMC7653781 DOI: 10.1186/s12940-020-00668-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/15/2020] [Indexed: 05/04/2023]
Abstract
BACKGROUND Current and projected increases in global temperatures and extreme climate events have led to heightened interest in the impact of climate factors (i.e. ambient temperature, season/seasonality, and humidity) on human health. There is growing evidence that climate factors may impact metabolic function, including insulin sensitivity. Gestational diabetes mellitus (GDM) is a common pregnancy complication, with an estimated global prevalence of up to 14%. While lifestyle and genetic risk factors for GDM are well established, environmental factors may also contribute to GDM risk. Previous reviews have summarized the growing evidence of environmental risk factors for GDM including endocrine disrupting chemicals and ambient air pollution. However, studies of the effects of climate factors on GDM risk have not been systematically evaluated. Therefore, we conducted a systematic review to summarize and evaluate the current literature on the associations of climate factors with GDM risk. METHODS We conducted systematic searches in PubMed and EMBASE databases for original research articles on associations of climate factors (i.e. ambient temperature, season/seasonality, and humidity) with GDM and/or related glycemic outcomes for all publication dates through September 20th, 2020. RESULTS Our search identified 16 articles on the associations of ambient temperature and/or season with GDM and maternal glycemic outcomes during pregnancy, which were included in this review. Despite inconsistencies in exposure and outcome assessment, we found consistent evidence of a seasonal effect on GDM risk, with higher prevalence of GDM and higher pregnancy glucose levels in summer months. We found suggestive evidence of an association between higher ambient temperature and elevated glucose levels from GDM screening tests. CONCLUSION Climate factors may be associated with GDM risk. However, further research is needed to evaluate these associations and to elucidate the specific mechanisms involved.
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Affiliation(s)
- Emma V. Preston
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Building 1, Room 1411, 677 Huntington Ave, Boston, MA 02118 USA
| | - Claudia Eberle
- Medicine with specialization in Internal Medicine and General Medicine, Hochschule Fulda - University of Applied Sciences, Fulda, Germany
| | | | - Tamarra James-Todd
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Building 1, Room 1411, 677 Huntington Ave, Boston, MA 02118 USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA USA
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Real-World Gestational Diabetes Screening: Problems with the Oral Glucose Tolerance Test in Rural and Remote Australia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16224488. [PMID: 31739513 PMCID: PMC6888052 DOI: 10.3390/ijerph16224488] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/10/2019] [Accepted: 11/11/2019] [Indexed: 01/28/2023]
Abstract
Gestational diabetes mellitus (GDM) is the most common antenatal complication in Australia. All pregnant women are recommended for screening by 75 g oral glucose tolerance test (OGTT). As part of a study to improve screening, 694 women from 27 regional, rural and remote clinics were recruited from 2015–2018 into the Optimisation of Rural Clinical and Haematological Indicators for Diabetes in pregnancy (ORCHID) study. Most routine OGTT samples were analysed more than four hours post fasting collection (median 5.0 h, range 2.3 to 124 h), potentially reducing glucose levels due to glycolysis. In 2019, to assess pre-analytical plasma glucose (PG) instability over time, we evaluated alternative sample handling protocols in a sample of participants. Four extra samples were collected alongside routine room temperature (RT) fluoride-oxalate samples (FLOXRT): study FLOXRT; ice slurry (FLOXICE); RT fluoride-citrate-EDTA (FC Mix), and RT lithium-heparin plasma separation tubes (PST). Time course glucose measurements were then used to estimate glycolysis from ORCHID participants who completed routine OGTT after 24 weeks gestation (n = 501). Adjusting for glycolysis using FLOXICE measurements estimated 62% under-diagnosis of GDM (FLOXRT 10.8% v FLOXICE 28.5% (95% CI, 20.8–29.5%), p < 0.001). FC Mix tubes provided excellent glucose stability but gave slightly higher results (Fasting PG: +0.20 ± 0.05 mmol/L). While providing a realistic alternative to the impractical FLOXICE protocol, direct substitution of FC Mix tubes in clinical practice may require revision of GDM diagnostic thresholds.
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