Temperature during pregnancy influences the fetal growth and birth size

Rashid, Harunor; Kagami, Miki; Ferdous, Farzana; Ma, Enbo; Terao, Toru; Hayashi, Taiichi; Wagatsuma, Yukiko

doi:10.1186/s41182-016-0041-6

Cited by 45 publications

(56 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Changes in birth weight were especially small in studies in low and middle income countries. 48 81 Notably, in the lag measures, high temperatures in the last four weeks of pregnancy appeared to have little impact on birth weight, and were even associated with an increase in birth weight in two studies (supplementary fig 7b). 48 80 Among studies that showed an association between reduced weight and high temperatures, the largest impacts were in women aged less than or equal to 22 or above 40 29 71 79 ; who were black, 79 indigenous, 48 or Hispanic 71 ; and of low socioeconomic status 29 71 79 ( fig 5 , fig 6 , supplementary fig 8a).…”

Section: Resultsmentioning

confidence: 95%

Associations between high temperatures in pregnancy and risk of preterm birth, low birth weight, and stillbirths: systematic review and meta-analysis

Chersich

Pham

Areal

et al. 2020

BMJ

293

284

View full text Add to dashboard Cite

Objective To assess whether exposure to high temperatures in pregnancy is associated with increased risk for preterm birth, low birth weight, and stillbirth. Design Systematic review and random effects meta-analysis. Data sources Medline and Web of Science searched up to September 2018, updated in August 2019. Eligibility criteria for selecting studies Clinical studies on associations between high environmental temperatures, and preterm birth, birth weight, and stillbirths. Results 14 880 records and 175 full text articles were screened. 70 studies were included, set in 27 countries, seven of which were countries with low or middle income. In 40 of 47 studies, preterm births were more common at higher than lower temperatures. Exposures were classified as heatwaves, 1°C increments, and temperature threshold cutoff points. In random effects meta-analysis, odds of a preterm birth rose 1.05-fold (95% confidence interval 1.03 to 1.07) per 1°C increase in temperature and 1.16-fold (1.10 to 1.23) during heatwaves. Higher temperature was associated with reduced birth weight in 18 of 28 studies, with considerable statistical heterogeneity. Eight studies on stillbirths all showed associations between temperature and stillbirth, with stillbirths increasing 1.05-fold (1.01 to 1.08) per 1°C rise in temperature. Associations between temperature and outcomes were largest among women in lower socioeconomic groups and at age extremes. The multiple temperature metrics and lag analyses limited comparison between studies and settings. Conclusions Although summary effect sizes are relatively small, heat exposures are common and the outcomes are important determinants of population health. Linkages between socioeconomic status and study outcomes suggest that risks might be largest in low and middle income countries. Temperature rises with global warming could have major implications for child health. Systematic review registration PROSPERO CRD 42019140136 and CRD 42018118113.

show abstract

Section: Resultsmentioning

confidence: 95%

Associations between high temperatures in pregnancy and risk of preterm birth, low birth weight, and stillbirths: systematic review and meta-analysis

Chersich

Pham

Areal

et al. 2020

BMJ

293

284

View full text Add to dashboard Cite

show abstract

“…Temperature is associated with length at birth. The neonate born in the colder season was significantly shorter than those born in the summer season (Rashid et al, 2017;Svefors, 2018). Flood is one of the most common natural disasters in Bangladesh.…”

Section: Ta B L Ementioning

confidence: 98%

Determinants of stunting during the first 1,000 days of life in Bangladesh: A review

Islam

Ullah

Mainali³

et al. 2020

Food Science & Nutrition

View full text Add to dashboard Cite

Stunting is a major problem in Bangladesh, with a prevalence of 31% in 2017. The prevalence of stunting in children aged under two has reduced by only 6% since 2004. After children reach 2 years of age, the consequences of stunting become almost irreversible. This paper seeks to examine and analyze the determinants associated with stunting during the first 1,000 days of life in Bangladesh to assist in developing evidence‐based interventions in Bangladesh. A literature review was conducted comprehensively on all relevant peer‐reviewed and gray literature of studies conducted in Bangladesh. The existing literature was searched and examined using the World Health Organization (WHO) conceptual framework for stunting. Evidence indicates that low maternal weight, lack of maternal education, severe food insecurity, lack of access to suitable nutrition, nonexclusive breastfeeding, pathogen‐specific diarrhea, and low weight and height at birth are associated with early childhood stunting in Bangladesh. The relation of the quality of drinking water with stunting is not clear in Bangladesh. Literature about the association between stunting and determinants such as the political economy, education systems, and agriculture and food systems is not found. This synthesis shows that the factors of stunting are multifaceted. As such, a multi‐sectoral approach is essential in Bangladesh, employing evidence‐based interventions to address the determinants that contribute to the risk of stunting to achieve the global nutrition target by 2025.

show abstract

“…have a partial immunity and are consequently more vulnerable to parasite infection than adults ( Langhorne et al, 2008 ; Cowman et al, 2016 ; Rodriguez-barraquer et al, 2018 ). Studies have demonstrated a high asymptomatic malaria prevalence in this age group ( Nankabirwa et al, 2014 ; Clarke et al, 2008 ; Sultana et al, 2017 ; Nankabirwa et al, 2013 ; Nankabirwa et al, 2015 ; Yeka et al, 2015 ; Ahorlu et al, 2009 ). Conversely, in high transmission areas, children under-five are more at risk of severe malaria due to lack of acquired immunity ( World Health Organization, 2019 ; Langhorne et al, 2008 ; Cowman et al, 2016 ; World Health Organization, n.d. ; Ndungu et al, 2012 ).…”

Section: Discussionmentioning

confidence: 97%

“…A recent systematic review ( van Eijk et al, 2015 ) reported a strong correlation between malaria prevalence in children aged 0–59 months and pregnant women (r:0.87, p < 0.0001), with a higher average prevalence observed in children than in pregnant women (pooled prevalence ratio (PPR):1.44, 95%CI:1.2–1.62). It has also been suggested that children above five and children of school age have a higher asymptomatic malaria parasitaemia prevalence than their under-five counterparts ( Walldorf et al, 2015 ; Nankabirwa et al, 2014 ; Sultana et al, 2017 ). However, a relationship between malaria parasite carriage in pregnant women and school-aged children has not been established.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of malaria parasitaemia in school-aged children and pregnant women in endemic settings of sub-Saharan Africa: A systematic review and meta-analysis

Makenga

Menon

Baraka

et al. 2020

Parasite Epidemiology and Control

View full text Add to dashboard Cite

Despite increased malaria control efforts, school-aged children (5–14 years) have higher a malaria prevalence compared to children under-five. In high-transmission settings, up to 70% of school-aged children harbour malaria parasitaemia and therefore contribute significantly to the reservoir for transmission. A systematic review was performed to explore the correlation between the malaria parasite carriage in pregnant women and school-aged children living in similar endemic settings of sub Saharan Africa to inform strategies to improve targeted malaria control. In order to obtain data on malaria prevalence in pregnant women and school-aged children living in the same endemic setting, we searched the Malaria in Pregnancy Library, PubMed, Cochrane library and Web of Science in December 2018. We fit a fixed effect model to obtain a pooled risk ratio (PRR) of malaria in school-aged children versus pregnant women and used Poisson regression to estimate risk ratios in school-aged children for every increase in prevalence in pregnant women. We used data from six (out of 1096) sources that included 10 data points. There was a strong linear relation between the prevalence of malaria infection in pregnant women and school-aged children ( r = 0·93, p < 0·0001). School-aged children were nearly twice at risk to carry parasites compared to pregnant women (RR = 1.95, 95% CI: 1·69–2.25, p < 0.01). Poisson regression showed that a 1% increase in prevalence of malaria infection in pregnant women was significantly associated with increase in risk in school-aged children by 4%. Malaria infection prevalence in school-aged children is strongly correlated with the prevalence in pregnant women living in the same community, and may be considered as alternative indicators to track temporal and spatial trends in malaria transmission intensity. Chemoprevention strategies targeting school-aged children should be explored to reduce malaria burden and transmission in school-aged children and its potential impact on communities.

show abstract

Temperature during pregnancy influences the fetal growth and birth size

Cited by 45 publications

References 36 publications

Associations between high temperatures in pregnancy and risk of preterm birth, low birth weight, and stillbirths: systematic review and meta-analysis

Associations between high temperatures in pregnancy and risk of preterm birth, low birth weight, and stillbirths: systematic review and meta-analysis

Determinants of stunting during the first 1,000 days of life in Bangladesh: A review

Prevalence of malaria parasitaemia in school-aged children and pregnant women in endemic settings of sub-Saharan Africa: A systematic review and meta-analysis

Contact Info

Product

Resources

About