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Yu Y, Lu D, Zhang Z, Tao L. Association of soluble transferrin receptor/log ferritin index with all-cause and cause-specific mortality: National Health and Nutrition Examination Survey. Front Nutr 2024; 11:1275522. [PMID: 38476599 PMCID: PMC10927731 DOI: 10.3389/fnut.2024.1275522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
Background Soluble transferrin receptor (sTfR)/log ferritin index (sTfR Index) can be used to assess the entire spectrum of iron status, and is valuable in evaluating iron status in population studies. There is still a lack of evidence on the association between sTfR index and all-cause mortality. Object To explore the association between sTfR index and all-cause mortality, as well as mortality due to cardiovascular disease (CVD) and cancer. Method Data were from the National Health and Nutrition Examination Survey (NHANES) between 2003 to 2020. Participants aged 16 years and older who had complete data of serum ferritin and sTfR were included. Pregnant individuals or those with ineligible data on death or follow-up were excluded from the analysis. Baseline sTfR index was calculated by baseline sTfR/log (ferritin) and classified as three tertile. We performed the Cox proportional hazard regression to assess the association of sTfR index (both continuous and categorical scale) with all-cause and cause-specific mortality and further assess the non-linear relationship between sTfR index and the outcomes with restricted cubic spline. Result In this study, 11,525 participants, a total of 231 (2.0%) all-cause deaths occurred during a median follow-up of 51 months. The risk of all-cause mortality, CVD-related mortality, and cancer-related mortality was higher in participants with highest tertile of sTfR index. After confounding factors adjustment, participants with highest tertile of sTfR index were associated with an increased risk of all-cause mortality (HR: 1.71, 95% CI: 1.14-2.57) as compared with lowest tertile. Additionally, sTfR index per SD increment was associated with a 25% increasing risk of all-cause mortality (HR: 1.25, 95% CI: 1.08-1.45, p = 0.003) and a 38% cancer-related mortality (HR: 1.38, 95% CI: 1.07-1.77, p = 0.018). These associations remained robust after adjusting for the serum ferritin as well as in various subgroups stratified by age, sex, smoking statue, hypertension, diabetes, and CVD. Spline analysis showed that there is approximately linear relationship between sTfR index with all-cause mortality (p for non-linear = 0.481). Moreover, ferritin was not a predictor of all-cause death after adjustment for confounding factors. Significance This cohort study demonstrated a significant association between sTfR index increment and an increased risk of all-cause and cancer-related mortality, independent of ferritin levels.
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Affiliation(s)
- Yan Yu
- Guangzhou Baiyunshan Hospital, Guangzhou, China
| | - Dongying Lu
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhenhui Zhang
- Department of Critical Care Medicine, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Lili Tao
- Department of Critical Care Medicine, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
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Mintsopoulos V, Tannenbaum E, Malinowski AK, Shehata N, Walker M. Identification and treatment of iron-deficiency anemia in pregnancy and postpartum: A systematic review and quality appraisal of guidelines using AGREE II. Int J Gynaecol Obstet 2024; 164:460-475. [PMID: 37424100 DOI: 10.1002/ijgo.14978] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/02/2023] [Accepted: 06/10/2023] [Indexed: 07/11/2023]
Abstract
BACKGROUND Several international guidelines provide recommendations for the optimal management of iron-deficiency anemia (IDA) in the pregnant and postpartum populations. OBJECTIVES To review the quality of guidelines containing recommendations for the identification and treatment of IDA in pregnancy and postpartum using the Appraisal of Guidelines for Research and Evaluation II (AGREE II) instrument and to summarize their recommendations. SEARCH STRATEGY PubMed, Medline, and Embase databases were searched from inception to August 2, 2021. A web engine search was also performed. SELECTION CRITERIA Clinical practice guidelines that focused on the management of IDA in pregnancy and/or postpartum populations were included. DATA COLLECTION AND ANALYSIS Included guidelines were appraised using AGREE II independently by two reviewers. Domain scores greater than 70% were considered high-quality. Overall scores of six or seven (out of a possible seven) were considered high-quality guidelines. Recommendations on IDA management were extracted and summarized. MAIN RESULTS Of 2887 citations, 16 guidelines were included. Only six (37.5%) guidelines were deemed high-quality and were recommended by the reviewers. All 16 (100%) guidelines discussed the management of IDA in pregnancy, and 10 (62.5%) also included information on the management of IDA in the postpartum period. CONCLUSIONS The complex interplay of racial, ethnic, and socioeconomic disparities was rarely addressed, which limits the generalizability of the recommendations. In addition, many guidelines failed to identify barriers to implementation, strategies to improve uptake or iron treatment, and resource and cost implications of clinical recommendations. These findings highlight important areas to target future work.
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Affiliation(s)
| | - Evan Tannenbaum
- University of Toronto, Toronto, Ontario, Canada
- General Division, Department of Obstetrics & Gynecology, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - A Kinga Malinowski
- University of Toronto, Toronto, Ontario, Canada
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, Mount Sinai Hospital, Toronto, Ontario, Canada
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Nadine Shehata
- University of Toronto, Toronto, Ontario, Canada
- Laboratory Medicine and Pathobiology, Departments of Medicine, University of Toronto, Toronto, Ontario, Canada
- Division of Hematology, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Melissa Walker
- University of Toronto, Toronto, Ontario, Canada
- General Division, Department of Obstetrics & Gynecology, Mount Sinai Hospital, Toronto, Ontario, Canada
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Mare KU, Aychiluhm SB, Sabo KG, Tadesse AW, Kase BF, Ebrahim OA, Tebeje TM, Mulaw GF, Seifu BL. Determinants of anemia level among reproductive-age women in 29 Sub-Saharan African countries: A multilevel mixed-effects modelling with ordered logistic regression analysis. PLoS One 2023; 18:e0294992. [PMID: 38019840 PMCID: PMC10686498 DOI: 10.1371/journal.pone.0294992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 11/13/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Despite the implementation of different nutritional and non-nutritional interventions, 43% of reproductive-age women in Africa suffer from anemia. Recent evidence also shows that none of the Sub-Saharan African (SSA) countries are on the track to achieve the nutrition target of 50% anemia reduction by 2030. To date, information on the level of anemia and its determinants among reproductive-age women at the SSA level is limited. Thus, this study aimed to estimate the pooled prevalence of anemia level and its determinants in SSA countries. METHODS We used a pooled data of 205,627 reproductive-age women from the recent demographic and health surveys of 29 SSA countries that were conducted between 2010-2021. A multilevel mixed-effects analysis with an ordered logistic regression model was fitted to identify determinants of anemia level and the deviance value was used to select the best-fitted model. First, bivariable ordinal logistic regression analysis was done and the proportional odds assumption was checked for each explanatory variable using a Brant test. Finally, in a multivariable multilevel ordinal logistic regression model, a p-value<0.05 and AOR with the corresponding 95% CI were used to identify determinants of anemia level. All analyses were done using Stata version 17 software. RESULTS The pooled prevalence of anemia among women of reproductive age in SSA was 40.5% [95% CI = 40.2%-40.7%], where 24.8% [95% CI: 24.6%-25.0%], 11.1% [95% CI = 10.9%-11.2%], and 0.8% [95% CI = 0.7%-0.8%] had mild, moderate, and severe anemia, respectively. The prevalence significantly varied from the lowest of 13% in Rwanda to the highest of 62% in Mali, and anemia was found as a severe public health problem (prevalence of ≥ 40%) in 18 countries. The regression result revealed that polygamous marriage, women and husband illiteracy, poor household wealth, shorter birth interval, non-attendance of antenatal care, underweight, unimproved toilet and water facilities, and low community-level women literacy were positively linked with high anemia level. Additionally, the likelihood of anemia was lower in women who were overweight and used modern contraception. CONCLUSIONS Overall results showed that anemia among women of reproductive age is a severe public health problem in SSA countries, affecting more than four in ten women. Thus, enhancing access to maternal health services (antenatal care and contraception) and improved sanitation facilities would supplement the existing interventions targeted to reduce anemia. Moreover, strengthening women's education and policies regulating the prohibition of polygamous marriage are important to address the operational constraints.
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Affiliation(s)
- Kusse Urmale Mare
- Department of Nursing, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
| | - Setognal Birara Aychiluhm
- Department of Epidemiology & Biostatistics, Institute of Public Health, College of Medicine & Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Kebede Gemeda Sabo
- Department of Nursing, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
| | - Abay Woday Tadesse
- Department of Public Health, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
| | - Bizunesh Fentahun Kase
- Department of Public Health, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
| | - Oumer Abdulkadir Ebrahim
- Department of Public Health, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
| | - Tsion Mulat Tebeje
- School of Public Health, College of Health Sciences and Medicine, Dilla University, Dilla, Ethiopia
| | - Getahun Fentaw Mulaw
- School of Public Health, College of Medicine and Health Sciences, Woldia University, Woldia, Ethiopia
| | - Beminate Lemma Seifu
- Department of Public Health, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
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Young MF, Oaks BM, Rogers HP, Tandon S, Martorell R, Dewey KG, Wendt AS. Maternal low and high hemoglobin concentrations and associations with adverse maternal and infant health outcomes: an updated global systematic review and meta-analysis. BMC Pregnancy Childbirth 2023; 23:264. [PMID: 37076797 PMCID: PMC10114461 DOI: 10.1186/s12884-023-05489-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 03/02/2023] [Indexed: 04/21/2023] Open
Abstract
BACKGROUND Growing evidence suggests low and high maternal hemoglobin (Hb) concentrations may have adverse consequences for maternal and child health. There remain questions on specific Hb thresholds to define anemia and high Hb as well as how cutoffs may vary by anemia etiology and timing of assessment. METHODS We conducted an updated systematic review (using PubMed and Cochrane Review) on low (< 110 g/L) and high (≥ 130 g/L) maternal Hb concentrations and associations with a range of maternal and infant health outcomes. We examined associations by timing of Hb assessment (preconception; first, second, and third trimesters, as well as at any time point in pregnancy), varying cutoffs used for defining low and high hemoglobin concentrations and performed stratified analyses by iron-deficiency anemia. We conducted meta-analyses to obtain odds ratios (OR) and 95% confidence intervals. RESULTS The updated systematic review included 148 studies. Low maternal Hb at any time point in pregnancy was associated with: low birthweight, LBW (OR (95% CI) 1.28 (1.22-1.35)), very low birthweight, VLBW (2.15 (1.47-3.13)), preterm birth, PTB (1.35 (1.29-1.42)), small-for-gestational age, SGA (1.11 (1.02-1.19)), stillbirth 1.43 (1.24-1.65)), perinatal mortality (1.75 (1.28-2.39)), neonatal mortality (1.25 (1.16-1.34), postpartum hemorrhage (1.69 (1.45-1.97)), transfusion (3.68 (2.58-5.26)), pre-eclampsia (1.57 (1.23-2.01)), and prenatal depression (1.44 (1.24-1.68)). For maternal mortality, the OR was higher for Hb < 90 (4.83 (2.17-10.74)) than for Hb < 100 (2.87 (1.08-7.67)). High maternal Hb was associated with: VLBW (1.35 (1.16-1.57)), PTB (1.12 (1.00-1.25)), SGA (1.17 (1.09-1.25)), stillbirth (1.32 (1.09-1.60)), maternal mortality (2.01 (1.12-3.61)), gestational diabetes (1.71 (1.19-2.46)), and pre-eclampsia (1.34 (1.16-1.56)). Stronger associations were noted earlier in pregnancy for low Hb and adverse birth outcomes while the role of timing of high Hb was inconsistent. Lower Hb cutoffs were associated with greater odds of poor outcomes; for high Hb, data were too limited to identify patterns. Information on anemia etiology was limited; relationships did not vary by iron-deficiency anemia. CONCLUSION Both low and high maternal Hb concentrations during pregnancy are strong predictors of adverse maternal and infant health outcomes. Additional research is needed to establish healthy reference ranges and design effective interventions to optimize maternal Hb during pregnancy.
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Affiliation(s)
- Melissa F Young
- Hubert Department of Global Health, Emory University, 1518 Clifton Road NE, 30322, Atlanta, GA, USA.
| | - Brietta M Oaks
- Department of Nutrition and Food Sciences, University of Rhode Island, 02881, Kingston, United States
| | - Hannah Paige Rogers
- Hubert Department of Global Health, Emory University, 1518 Clifton Road NE, 30322, Atlanta, GA, USA
| | - Sonia Tandon
- Hubert Department of Global Health, Emory University, 1518 Clifton Road NE, 30322, Atlanta, GA, USA
| | - Reynaldo Martorell
- Hubert Department of Global Health, Emory University, 1518 Clifton Road NE, 30322, Atlanta, GA, USA
| | - Kathryn G Dewey
- Department of Nutrition, University of California, Davis, 95616, Davis, United States
| | - Amanda S Wendt
- Research Department 2, Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, PO Box 60 12 03, 14412,, Potsdam, Germany
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Young MF, Nguyen P, Tran LM, Khuong LQ, Martorell R, Ramakrishnan U. Long term association between of maternal preconception hemoglobin and anemia and child health and development in Vietnam. J Nutr 2023; 153:1597-1606. [PMID: 36925072 PMCID: PMC10367189 DOI: 10.1016/j.tjnut.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/10/2023] [Accepted: 03/10/2023] [Indexed: 03/15/2023] Open
Abstract
BACKGROUND The long-term association between preconception maternal hemoglobin (Hb) concentrations and child health and development is unclear. OBJECTIVE We examined associations between maternal preconception Hb concentrations and anemia with: a) birth outcomes (weight, length, preterm, gestational age, small-for-gestational-age); b) child Hb at 3 mo, 6 mo, 12 mo, and 24 mo; c) motor and mental development at 12 mo and 24 mo (Bayley scales for infant development) and cognitive functioning at 6-7y (Wechsler Intelligence Scale for Children). METHODS We used data from a randomized controlled trial (PRECONCEPT) conducted in Vietnam. Over 5000 women who were intending to conceive were recruited and offspring were prospectively followed from birth (n=1599) through 6-7y (n=1318). Multivariable linear and logistic regressions were used to assess the association between preconception Hb or anemia (Hb < 11g/dL) on child health and development outcomes, adjusted by supplementation group (tested for interactions) and confounding at maternal, child and household levels. RESULTS At preconception enrollment, 20% of the women were anemic. Maternal preconception Hb was positively associated with child Hb at 3 mo (0.06; 95% CI: 0.01,0.12), 6 mo (0.08; 95% CI: 0.03,0.13), 12 mo (0.10; 95% CI: 0.04-0.15) and 24 mo (0.07; 95% CI: 0.02,0.12). Likewise, maternal preconception Hb was associated with reduced risk of child anemia at 6mo (0.89; 95% CI: 0.81-0.98), 12 mo (0.81; 95% CI: 0.74-0.89) and 24 mo (0.87; 95% CI: 0.79-0.95). Maternal preconception anemia was negatively associated with cognition (-1.64; 95% CI: -3.09, -0.19) and language development (-1.61; 95% CI: -3.20, -0.03) at 24mo. Preconception Hb was not associated with birth outcomes or cognitive outcomes at 6-7y. CONCLUSION Maternal preconception Hb was associated with child Hb across the first 1000 days of life. However, preconception Hb was not a significant predictor of birth outcomes or cognitive outcomes at 6-7y in this cohort from Vietnam.
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Affiliation(s)
- Melissa F Young
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
| | - Phuong Nguyen
- Poverty, Health and Nutrition Division, International Food Policy Research Institute (IFPRI), Washington, DC, USA; Thai Nguyen University of Pharmacy and Medicine, Thai Nguyen, Vietnam
| | - Lan Mai Tran
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | | | - Reynaldo Martorell
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Usha Ramakrishnan
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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Tao Y, Kang J, Liu J, Duan J, Wang F, Shi Y, Li Y, Wang C, Xu D, Qu X, Guo J, Ma J, Zhang Y. Association of low birthweight and small for gestational age with maternal ferritin levels: A retrospective cohort study in China. Front Nutr 2022; 9:1002702. [PMID: 36299991 PMCID: PMC9589249 DOI: 10.3389/fnut.2022.1002702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/20/2022] [Indexed: 12/02/2022] Open
Abstract
Background Birthweight have profound impacts on health status throughout lifetime, however, the relationship between maternal ferritin level in pregnancy and birthweight of the newborn remains controversial. Objective This retrospective cohort research was to analyze the association between maternal ferritin levels during pregnancy with birthweight outcomes, primarily for low birthweight (LBW) and small for gestational age (SGA). Methods Newborns weighing lower than 2,500 grams were defined as LBW. SGA is defined as birthweight lower than the 10th percentile of the distribution of newborns' birthweight of the same gestational age. Multivariable logistic regressions have been used to explore the association of maternal ferritin levels and birthweight related outcomes, in which the ferritin concentration was logarithm transformed in the model. We further used restricted cubic spline models to explore linear/non-linear dose–response manners of ferritin level and birthweight outcomes. Results A total of 3,566 pregnant women were included in the study. In the results of the present study, we observed that maternal ferritin levels were linearly associated with the risk of LBW (p-trend = 0.005) and SGA (p-trend = 0.04), with the adjusted odds ratios (ORs) of 1.78 (95% CI 1.37–2.32) for LBW and 1.87 (95% CI 1.38–2.54) for SGA with an increase in Ln-ferritin concentrations per unit. The adjusted ORs across quartiles of ferritin levels were 2.14 (95% CI 1.03–4.47) for Quartile 2, 3.13 (95% CI 1.47–6.69) for Quartile 3, and 3.63 (95% CI 1.52–8.68) for Quartile 4 for LBW. The adjusted ORs of LBW and SGA among women using supplemental iron were 0.56 (95% CI 0.38, 0.85) and 0.65 (95% CI 0.40, 1.05) compared with non-users, respectively. Conclusions Our findings found a linear dose–response relationship between ferritin levels and an increased risk of poor birthweight outcomes, suggesting that maternal ferritin level during pregnancy may provide an additional predictor for differentiating poor birthweight related outcomes. Further exploration should be conducted to ensure maternal ferritin thresholds and iron supplement doses.
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Affiliation(s)
- Yun Tao
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Jiawei Kang
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Juan Liu
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Jie Duan
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Fang Wang
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Yue Shi
- Information Center, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yujuan Li
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Cheng Wang
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China
| | - Dan Xu
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xinlan Qu
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Juanjuan Guo
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jianhong Ma
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China,Jianhong Ma
| | - Yuanzhen Zhang
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China,Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, China,Wuhan Clinical Research Center for Reproductive Science and Birth Health, Wuhan, China,*Correspondence: Yuanzhen Zhang
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High Iron Exposure from the Fetal Stage to Adulthood in Mice Alters Lipid Metabolism. Nutrients 2022; 14:nu14122451. [PMID: 35745181 PMCID: PMC9227341 DOI: 10.3390/nu14122451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 12/11/2022] Open
Abstract
Iron supplementation is recommended during pregnancy and fetal growth. However, excess iron exposure may increase the risk of abnormal fetal development. We investigated the potential side effects of high iron levels in fetuses and through their adult life. C57BL/6J pregnant mice from 2 weeks of gestation and their offspring until 30 weeks were fed a control (CTRL, FeSO4 0 g/1 kg) or high iron (HFe, FeSO4 9.9 g/1 kg) diets. HFe group showed higher iron accumulation in the liver with increased hepcidin, reduced TfR1/2 mRNAs, and lowered ferritin heavy chain (FTH) proteins in both liver and adipose tissues despite iron loading. HFe decreased body weight, fat weight, adipocyte size, and triglyceride levels in the blood and fat, along with downregulation of lipogenesis genes, including PPARγ, C/EBPα, SREBP1c, FASN, and SCD1, and fatty acid uptake and oxidation genes, such as CD36 and PPARα. UCP2, adiponectin, and mRNA levels of antioxidant genes such as GPX4, HO-1, and NQO1 were increased in the HFe group, while total glutathione was reduced. We conclude that prolonged exposure to high iron from the fetal stage to adulthood may decrease fat accumulation by altering ferritin expression, adipocyte differentiation, and triglyceride metabolism, resulting in an alteration in normal growth.
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Wu L, Sun R, Liu Y, Liu Z, Chen H, Shen S, Wei Y, Deng G. High hemoglobin level is a risk factor for maternal and fetal outcomes of pregnancy in Chinese women: A retrospective cohort study. BMC Pregnancy Childbirth 2022; 22:290. [PMID: 35387646 PMCID: PMC8988373 DOI: 10.1186/s12884-022-04636-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 03/22/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND To examine the association of hemoglobin (Hb) levels during gestation with the risk of selected adverse pregnancy outcomes such as preterm birth (PTB), low-birth-weight infants (LBW) and small-for-gestational-age infants (SGA) in Chinese women. METHODS This retrospective cohort study was conducted in the Department of Gynecology and Obstetrics at the Union Shenzhen Hospital of the Huazhong University of Science and Technology, using routinely collected maternity and hospital data on pregnancies (2015-2018). Hb levels were measured during the second (16-18th weeks) and third (28-30th weeks) trimesters of pregnancy, and pregnancy outcomes were recorded in the hospital information system. Hb levels were categorized into four groups as follows: < 110 g/L, 110-119 g/L, 120-130 g/L, and > 130 g/L. The second group (Hb 110-119 g/L) was defined as the reference group. Statistical analysis was performed using multivariate logistic regression. RESULTS A total of 1911 singleton mothers were included. After multivariable adjustment, Hb levels > 130 g/L in the second trimester increased the risk of LBW (odds ratio [OR], 2.54; 95% confidence interval [CI], 1.12-5.76). In the third trimester of gestation, compared with women whose Hb levels between 110 and 119 g/L, women with Hb levels > 130 g/L had an increased risk of LBW (OR, 2.20; 95% CI, 1.07-4.51) and SGA (OR, 2.00; 95% CI, 1.05-3.80). When we compared the highest and lowest quartiles of changes in the Hb across the second and third trimesters, the adjusted ORs were 0.35 (95% CI: 0.18-0.68) for PTB and 0.47 (95% CI: 0.23-0.98) for LBW. CONCLUSION Maternal Hb > 130 g/L was associated with increased risk of adverse pregnancy outcomes. Reduction of the risks of PTB and SGA were observed with the appropriate increase of Hb level during the third trimester.
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Affiliation(s)
- Lanlan Wu
- Department of Clinical Nutrition, Union Shenzhen Hospital of Huazhong University of Science and Technology, No. 89 Taoyuan Road, Shenzhen, Guangdong, 518052, P.R. China
| | - Ruifang Sun
- Department of Clinical Nutrition, Union Shenzhen Hospital of Huazhong University of Science and Technology, No. 89 Taoyuan Road, Shenzhen, Guangdong, 518052, P.R. China
| | - Yao Liu
- Department of Clinical Nutrition, Union Shenzhen Hospital of Huazhong University of Science and Technology, No. 89 Taoyuan Road, Shenzhen, Guangdong, 518052, P.R. China
| | - Zengyou Liu
- Department of Obstetrics, Union Shenzhen Hospital of Huazhong University of Science and Technology, Shenzhen, China
| | - Hengying Chen
- Injury Prevention Research Center, Shantou University Medical College, Shantou, China
| | - Siwen Shen
- Department of Clinical Nutrition, Union Shenzhen Hospital of Huazhong University of Science and Technology, No. 89 Taoyuan Road, Shenzhen, Guangdong, 518052, P.R. China
| | - Yuanhuan Wei
- Department of Clinical Nutrition, Union Shenzhen Hospital of Huazhong University of Science and Technology, No. 89 Taoyuan Road, Shenzhen, Guangdong, 518052, P.R. China
| | - Guifang Deng
- Department of Clinical Nutrition, Union Shenzhen Hospital of Huazhong University of Science and Technology, No. 89 Taoyuan Road, Shenzhen, Guangdong, 518052, P.R. China
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Liu X, An H, Li N, Li Z, Zhang Y, Zhang L, Li H, Liu J, Ye R. Preconception Hemoglobin Concentration and Risk of Low Birth Weight and Small-for-Gestational-Age: A Large Prospective Cohort Study in China. Nutrients 2022; 14:nu14020271. [PMID: 35057452 PMCID: PMC8780179 DOI: 10.3390/nu14020271] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/03/2022] [Accepted: 01/06/2022] [Indexed: 12/18/2022] Open
Abstract
Less is known about the impact of maternal preconception anemia on birth outcomes. We aimed to examine associations between preconception hemoglobin (Hb) concentrations with risk of low birth weight (LBW) and small-for-gestational-age (SGA). This study was from a large population-based prospective cohort in China and included 124,725 women with singleton live births delivered at gestational ages of 28–45 weeks who were registered before pregnancy. Maternal Hb concentrations were measured during registration, and other health-related information was recorded prospectively. Logistic regression was used to evaluate the associations between preconception Hb concentrations with risk of LBW and SGA, adjusting for potential confounders. The results showed women with preconception anemia accounted for 22.28%. The incidences of LBW/SGA were 2.37%/6.30% among anemic women, and 2.01%/5.48% among non-anemic women, respectively. Preconception mild anemia increased by 17% (95% confidence interval (CI): 1.06, 1.28) and 14% (95% CI: 1.07, 1.21) the risk for LBW and SGA, while moderate-to-severe anemia had no significant association with LBW and SGA. Compared with the 120–129 g/L group, a U-shaped association was observed between preconception Hb concentrations with LBW and SGA. In conclusion, not only maternal anemia but also elevated Hb concentrations before pregnancy contribute to an increased risk of LBW and SGA.
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Affiliation(s)
- Xiaojing Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
| | - Hang An
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
| | - Nan Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
- Correspondence: (N.L.); (Z.L.)
| | - Zhiwen Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
- Correspondence: (N.L.); (Z.L.)
| | - Yali Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
| | - Le Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
| | - Hongtian Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
| | - Jianmeng Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
| | - Rongwei Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China; (X.L.); (H.A.); (Y.Z.); (L.Z.); (H.L.); (J.L.); (R.Y.)
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing 100191, China
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Georgsen M, Krog MC, Korsholm AS, Hvidman HW, Kolte AM, Rigas AS, Ullum H, Ziebe S, Andersen AN, Nielsen HS, Hansen MB. Serum ferritin level is inversely related to number of previous pregnancy losses in women with recurrent pregnancy loss. Fertil Steril 2020; 115:389-396. [PMID: 32988613 DOI: 10.1016/j.fertnstert.2020.08.1410] [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] [Received: 05/14/2020] [Revised: 07/31/2020] [Accepted: 08/22/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To study whether low serum ferritin (s-ferritin) levels are associated with recurrent pregnancy loss (RPL), and whether low s-ferritin predicts the risk of another pregnancy loss or the ability to conceive. DESIGN Cohort study. SETTING Fertility clinic at a university hospital. PATIENT(S) Eighty-four women referred to the RPL Unit and 153 women of reproductive age with no known fertility problem. s-Ferritin levels were measured in serum samples taken before pregnancy attempt. INTERVENTION None. MAIN OUTCOME MEASURE(S) s-Ferritin levels were correlated to pregnancy history, ability to conceive, and time to conception during the first 2 years after sampling. Furthermore, s-ferritin levels were correlated to outcome of the first pregnancy after referral for RPL. RESULT(S) Women with RPL had lower s-ferritin than the comparison group, 39.9 μg/L versus 62.2 μg/L, and had a higher prevalence of low iron stores (s-ferritin <30 μg/L), 35.7% versus 13.7%. We found an inverse relationship between s-ferritin level and number of pregnancy losses before referral. We did not find s-ferritin level to be associated with ability to conceive or time to pregnancy in either group. Nor did s-ferritin level predict the risk of losing the first pregnancy after referral for RPL. CONCLUSION(S) The inverse relationship between s-ferritin levels and previous pregnancy losses suggests that low s-ferritin is associated with a more severe reproductive disturbance in women with RPL. Whether low s-ferritin is causally related to RPL and if such women could benefit from iron supplementation to achieve a live birth warrants further investigation.
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Affiliation(s)
- Maja Georgsen
- Recurrent Pregnancy Loss Unit, Capital Region, Rigshospitalet and Hvidovre Hospital, Copenhagen University Hospital, Copenhagen, Denmark.
| | - Maria Christine Krog
- Recurrent Pregnancy Loss Unit, Capital Region, Rigshospitalet and Hvidovre Hospital, Copenhagen University Hospital, Copenhagen, Denmark; Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Anne-Sofie Korsholm
- Fertility Clinic, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | | | - Astrid Marie Kolte
- Recurrent Pregnancy Loss Unit, Capital Region, Rigshospitalet and Hvidovre Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Andreas Stribolt Rigas
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Henrik Ullum
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Søren Ziebe
- Fertility Clinic, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Anders Nyboe Andersen
- Fertility Clinic, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Henriette Svarre Nielsen
- Recurrent Pregnancy Loss Unit, Capital Region, Rigshospitalet and Hvidovre Hospital, Copenhagen University Hospital, Copenhagen, Denmark; Department of Gynecology and Obstetrics, Amager-Hvidovre Hospital, Copenhagen, Denmark
| | - Morten Bagge Hansen
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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Chowdhury R, Taneja S, Dhabhai N, Mazumder S, Upadhyay RP, Sharma S, Tupaki-Sreepurna A, Dewan R, Mittal P, Chellani H, Bahl R, Bhan MK, Bhandari N. Burden of preconception morbidity in women of reproductive age from an urban setting in North India. PLoS One 2020; 15:e0234768. [PMID: 32555694 PMCID: PMC7302496 DOI: 10.1371/journal.pone.0234768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 06/01/2020] [Indexed: 12/26/2022] Open
Abstract
Background There is a growing interest in the life course approach for the prevention, early detection and subsequent management of morbidity in women of reproductive age to ensure optimal health and nutrition when they enter pregnancy. Reliable estimates of such morbidities are lacking. We report the prevalence of health or nutrition-related morbidities, specifically, anemia, undernutrition, overweight and obesity, sexually transmitted infections (STIs) or reproductive tract infections (RTIs), diabetes or prediabetes, hypothyroidism, hypertension, and depressive symptoms, during the preconception period among women aged 18 to 30 years. Methods A cross-sectional study was conducted among 2000 nonpregnant married women aged 18 to 30 years with no or one child who wished to have more children in two low- to middle-income urban neighborhoods in Delhi, India, in the context of a randomized controlled trial. STIs and RTIs were measured by symptoms and signs, blood pressure by a digital device, height by stadiometer and weight by a digital weighing scale. A blood specimen was taken to screen for anemia, diabetes, thyroid disorders and syphilis. Maternal depressive symptoms were assessed using the Patient Health Questionnaire-9 (PHQ-9). Multivariable logistic regression analysis was performed to identify sociodemographic factors associated with individual morbidity. Results Overall, 58.7% of women were anemic; 16.5%, undernourished; 26%, overweight or obese; 13.2%, hypothyroid; and 10.5% with both symptoms and signs of STIs/RTIs. There was an increased risk of RTI/STI symptoms and signs in undernourished women and an increased risk of diabetes or prediabetes in overweight or obese women. An increased risk of undernutrition was also observed in women from lower categories of wealth quintiles. A decreased risk of moderate to severe anemia was seen in overweight women and those who completed at least secondary education. Conclusions Our findings show a high burden of undernutrition, anemia, RTIs, hypothyroidism and prediabetes among women in the study. This information will aid policymakers in planning special programs for women of reproductive age.
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Affiliation(s)
- Ranadip Chowdhury
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
| | - Sunita Taneja
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
| | - Neeta Dhabhai
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
| | - Sarmila Mazumder
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
| | - Ravi Prakash Upadhyay
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
| | - Sitanshi Sharma
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
| | | | - Rupali Dewan
- Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Pratima Mittal
- Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Harish Chellani
- Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Rajiv Bahl
- Department of Maternal, Newborn, Child and Adolescent Health, World Health Organization, Geneva, Switzerland
| | - Maharaj Kishan Bhan
- Knowledge Integration and Translational Platform (KnIT), Biotechnology Industry Research Assistance Council (BIRAC), Department of Biotechnology, Government of India, New Delhi, India
| | - Nita Bhandari
- Centre for Health Research and Development, Society for Applied Studies, New Delhi, India
- * E-mail:
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12
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Preconception Hb concentration with risk of spontaneous abortion: a population-based cohort study in over 3·9 million women across rural China. Public Health Nutr 2020; 23:2963-2972. [PMID: 32131921 DOI: 10.1017/s1368980019003811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Evidence on the relationship between maternal Hb concentration and spontaneous abortion (SA) risk is limited and conflicting. The purpose of the study was to evaluate whether maternal preconception anaemia or high Hb concentration is associated with risk of SA. DESIGN A population-based cohort study established between 2013 and 2017. SETTINGS Local maternal and child care service centres in each county. PARTICIPANTS In total, 3 971 428 women aged 20-49 years, who participated in National Free Pre-Pregnancy Checkups Project from 2013 to 2016 and successfully got pregnant before 2017 in rural China. RESULTS A total of 101 700 (2·56 %) women were recorded having SA, with highest SA rate in women with severe anaemia (4·58 %). Compared with women with Hb of 110-149 g/l, the multivariable-adjusted OR for SA was 1·52 (95 % CI: 1·25, 1·86) for women with Hb < 70 g/l, 0·92 (0·84, 1·01) for 70-99 g/l, 0·80 (0·77, 0·83) for 100-109 g/l, 1·11 (1·08, 1·15) for 150-159 g/l, 1·12 (1·04, 1·20) for 160-169 g/l and 1·02 (0·93, 1·12) for ≥ 170 g/l, respectively. An approximate U-shaped curve for the risk of SA with Hb concentrations was observed when Hb concentrations less than 145 g/l, above which the association plateaued (Pnon-linear < 0·001). CONCLUSIONS Severe anaemia and high Hb concentration before pregnancy were associated with an increased risk of SA. Women with mild anaemia prior to pregnancy had lower risk of SA. Underlying mechanisms need to be further studied.
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Taneja S, Chowdhury R, Dhabhai N, Mazumder S, Upadhyay RP, Sharma S, Dewan R, Mittal P, Chellani H, Bahl R, Bhan MK, Bhandari N. Impact of an integrated nutrition, health, water sanitation and hygiene, psychosocial care and support intervention package delivered during the pre- and peri-conception period and/or during pregnancy and early childhood on linear growth of infants in the first two years of life, birth outcomes and nutritional status of mothers: study protocol of a factorial, individually randomized controlled trial in India. Trials 2020; 21:127. [PMID: 32005294 PMCID: PMC6995212 DOI: 10.1186/s13063-020-4059-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/08/2020] [Indexed: 12/22/2022] Open
Abstract
Background The period from conception to two years of life denotes a critical window of opportunity for promoting optimal growth and development of children. Poor nutrition and health in women of reproductive age and during pregnancy can negatively impact birth outcomes and subsequent infant survival, health and growth. Studies to improve birth outcomes and to achieve optimal growth and development in young children have usually tested the effect of standalone interventions in pregnancy and/or the postnatal period. It is not clearly known whether evidence-based interventions in the different domains such as health, nutrition, water sanitation and hygiene (WASH) and psychosocial care, when delivered together have a synergistic effect. Further, the effect of delivery of an intervention package in the pre and peri-conception period is not fully understood. This study was conceived with an aim to understand the impact of an integrated intervention package, delivered across the pre and peri-conception period, through pregnancy and till 24 months of child age on birth outcomes, growth and development in children. Methods An individually randomized controlled trial with factorial design is being conducted in urban and peri-urban low- to mid-socioeconomic neighbourhoods in South Delhi, India. 13,500 married women aged 18 to 30 years will be enrolled and randomized to receive either the pre and peri-conception intervention package or routine care (first randomization). Interventions will be delivered until women are confirmed to be pregnant or complete 18 months of follow up. Once pregnancy is confirmed, women are randomized again (second randomization) to receive either the intervention package for pregnancy and postnatal period or to routine care. Newborns will be followed up till 24 months of age. The interventions are delivered through different study teams. Outcome data are collected by an independent outcome ascertainment team. Discussion This study will demonstrate the improvement that can be achieved when key factors known to limit child growth and development are addressed together, throughout the continuum from pre and peri-conception until early childhood. The findings will increase our scientific understanding and provide guidance to nutrition programs in low- and middle-income settings. Trial registration Clinical Trial Registry – India #CTRI/2017/06/008908; Registered 23 June 2017, http://ctri.nic.in/Clinicaltrials/pmaindet2.php?trialid=19339&EncHid=&userName=society%20for%20applied%20studies
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Affiliation(s)
- Sunita Taneja
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India
| | - Ranadip Chowdhury
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India
| | - Neeta Dhabhai
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India
| | - Sarmila Mazumder
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India
| | - Ravi Prakash Upadhyay
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India
| | - Sitanshi Sharma
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India
| | - Rupali Dewan
- Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Pratima Mittal
- Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Harish Chellani
- Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Rajiv Bahl
- Department of Maternal, Newborn, Child and Adolescent Health, World Health Organization, Geneva, Switzerland
| | - Maharaj Kishan Bhan
- Knowledge Integration and Translational Platform (KnIT), Biotechnology Industry Research Assistance Council (BIRAC), Department of Biotechnology, Government of India, New Delhi, India.,Indian Institute of Technology, New Delhi, India
| | - Nita Bhandari
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi, India.
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14
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Kambunga SN, Candeias C, Hasheela I, Mouri H. Review of the nature of some geophagic materials and their potential health effects on pregnant women: some examples from Africa. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:2949-2975. [PMID: 30977022 DOI: 10.1007/s10653-019-00288-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/27/2019] [Indexed: 05/25/2023]
Abstract
The voluntary human consumption of soil known as geophagy is a global practice and deep-rooted in many African cultures. The nature of geophagic material varies widely from the types to the composition. Generally, clay and termite mound soils are the main materials consumed by geophagists. Several studies revealed that gestating women across the world consume more soil than other groups for numerous motives. These motivations are related to medicinal, cultural and nutrients supplementation. Although geophagy in pregnancy (GiP) is a universal dynamic habit, the highest prevalence has been reported in African countries such as Kenya, Ghana, Rwanda, Nigeria, Tanzania, and South Africa. Geophagy can be both beneficial and detrimental. Its health effects depend on the amount and composition of the ingested soils, which is subjective to the geology and soil formation processes. In most cases, the negative health effects concomitant with the practice of geophagy eclipse the positive effects. Therefore, knowledge about the nature of geophagic material and the health effects that might arise from their consumption is important.
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Affiliation(s)
- Selma N Kambunga
- Department of Geology, University of Johannesburg, Johannesburg, South Africa
| | - Carla Candeias
- GeoBioTec, Geosciences Department, University of Aveiro, Aveiro, Portugal
- EpiUnit, Public Health Institute, University of Porto, Porto, Portugal
| | - Israel Hasheela
- Environmental and Engineering Geology Division, Geological Survey of Namibia, Windhoek, Namibia
| | - Hassina Mouri
- Department of Geology, University of Johannesburg, Johannesburg, South Africa.
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15
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Iron deficiency and anemia in adolescent girls consuming predominantly plant-based diets in rural Ethiopia. Sci Rep 2019; 9:17244. [PMID: 31754277 PMCID: PMC6872871 DOI: 10.1038/s41598-019-53836-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 11/05/2019] [Indexed: 11/12/2022] Open
Abstract
Rapid physical growth and the onset of menstruation during adolescence can increase the risk of iron deficiency (ID) and related adverse effects. However, little is known about the risk of anemia and ID among adolescent girls in Ethiopia. Therefore, we aimed to determine the prevalence of ID, low iron stores, and anemia and characterize selected risk factors in Huruta, Arsi Zone, Oromia Region, Ethiopia. A cross-sectional study was conducted among non-pregnant adolescent girls (15–19 years of age; n = 257). Data on household socio-demographic characteristics, anthropometric measurements, and women’s dietary diversity score (WDDS) were collected. Hemoglobin (Hb) and serum ferritin (SF), C-reactive protein (CRP), and α−1-acid-glycoprotein (AGP) concentrations were measured. Diets were predominantly plant-based, with a low consumption of animal source foods, fruits, and dark-green leafy vegetables. Only 4% of the adolescent girls had adequate dietary diversity (WDDS ≥5), and 35% were underweight. The prevalence of anemia (Hb <11 g/dL, 8.7%) and clinical ID (SF <15 µg/L, 8.7%) was low, but 41% had marginal iron stores (SF <50 µg/L). The low prevalence of ID, despite a predominantly plant-based diet is atypical and calls for adapted strategies to address low iron stores in this and other similar settings of Ethiopia.
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Kambunga SN, Candeias C, Hasheela I, Mouri H. The geochemistry of geophagic material consumed in Onangama Village, Northern Namibia: a potential health hazard for pregnant women in the area. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1987-2009. [PMID: 30778788 DOI: 10.1007/s10653-019-00253-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 01/27/2019] [Indexed: 06/09/2023]
Abstract
Ingestion of geophagic materials might affect human health and induce diseases by different ways. The purpose of this study is to determine the geochemical composition of geophagic material consumed especially by pregnant women in Onangama Village, Northern Namibia and to assess its possible health effects. X-ray fluorescence and inductively coupled plasma mass spectrometry were used in order to determine the major, and trace elements as well as anions concentrations of the consumed material. The geochemical analysis revealed high concentrations of aluminium (Al), calcium (Ca), iron (Fe), magnesium (Mg), manganese (Mn), potassium (K), sodium (Na), and silica (Si); and trace elements including arsenic (As), chromium (Cr), mercury (Hg), nickel (Ni) and vanadium (V) as well as sulphate (SO42-), nitrate (NO3-), and nitrite (NO2-) anions comparing to the recommended daily allowance for pregnant women. The pH for some of the studied samples is alkaline, which might increase the gastrointestinal tract pH (pH < 2) and cause a decrease in the bioavailability of elements. The calculated health risk index (HRI > 1) revealed that Al and Mn might be a potential risk for human consumption. Based on the results obtained from the geochemical analysis, the consumption of the studied material might present a potential health risk to pregnant women including concomitant detrimental maternal and foetal effects.
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Affiliation(s)
- Selma N Kambunga
- Department of Geology, University of Johannesburg, Johannesburg, South Africa
| | - Carla Candeias
- GeoBioTec, Geosciences Department, University of Aveiro, Aveiro, Portugal
- EpiUnit, Public Health Institute, University of Porto, Porto, Portugal
| | - Israel Hasheela
- Environmental and Engineering Geology Division, Geological Survey of Namibia, Windhoek, Namibia
| | - Hassina Mouri
- Department of Geology, University of Johannesburg, Johannesburg, South Africa.
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Jung J, Rahman MM, Rahman MS, Swe KT, Islam MR, Rahman MO, Akter S. Effects of hemoglobin levels during pregnancy on adverse maternal and infant outcomes: a systematic review and meta‐analysis. Ann N Y Acad Sci 2019; 1450:69-82. [DOI: 10.1111/nyas.14112] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/07/2019] [Accepted: 04/05/2019] [Indexed: 01/30/2023]
Affiliation(s)
- Jenny Jung
- Department of Global Health Policy, School of International Healththe University of Tokyo Tokyo Japan
- Global Public Health Research Foundation Dhaka Bangladesh
| | - Md. Mizanur Rahman
- Department of Global Health Policy, School of International Healththe University of Tokyo Tokyo Japan
- Global Public Health Research Foundation Dhaka Bangladesh
| | - Md. Shafiur Rahman
- Department of Global Health Policy, School of International Healththe University of Tokyo Tokyo Japan
- Global Public Health Research Foundation Dhaka Bangladesh
| | - Khin Thet Swe
- Department of Global Health Policy, School of International Healththe University of Tokyo Tokyo Japan
| | - Md. Rashedul Islam
- Department of Global Health Policy, School of International Healththe University of Tokyo Tokyo Japan
- Global Public Health Research Foundation Dhaka Bangladesh
| | | | - Shamima Akter
- Global Public Health Research Foundation Dhaka Bangladesh
- Department of Epidemiology and Prevention, Center for Clinical SciencesNational Center for Global Health and Medicine Tokyo Japan
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18
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Hjort L, Lykke Møller S, Minja D, Msemo O, Nielsen BB, Lund Christensen D, Theander T, Nielsen K, Larsen LG, Grunnet LG, Groop L, Prasad R, Lusingu J, Schmiegelow C, Bygbjerg IC. FOETAL for NCD-FOetal Exposure and Epidemiological Transitions: the role of Anaemia in early Life for Non-Communicable Diseases in later life: a prospective preconception study in rural Tanzania. BMJ Open 2019; 9:e024861. [PMID: 31122967 PMCID: PMC6537995 DOI: 10.1136/bmjopen-2018-024861] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Low-income and middle-income countries such as Tanzania experience a high prevalence of non-communicable diseases (NCDs), including anaemia. Studying if and how anaemia affects growth, placenta development, epigenetic patterns and newborns' risk of NCDs may provide approaches to prevent NCDs. PARTICIPANTS The FOETALforNCD (FOetal Exposure and Epidemiological Transitions: the role of Anaemia in early Life for Non-Communicable Diseases in later life) Study is a population-based preconception, pregnancy and birth cohort study (n=1415, n=538, n=427, respectively), conducted in a rural region of North-East Tanzania. All participants were recruited prior to conception or early in pregnancy and followed throughout pregnancy as well as at birth. Data collection included: maternal blood, screening for NCDs and malaria, ultrasound in each trimester, neonatal anthropometry at birth and at 1 month of age, cord blood, placental and cord biopsies for stereology and epigenetic analyses. FINDINGS TO DATE At preconception, the average age, body mass index and blood pressure of the women were 28 years, 23 kg/m2 and 117/75 mm Hg, respectively. In total, 458 (36.7%) women had anaemia (haemoglobin Hb <12 g/dL) and 34 (3.6%) women were HIV-positive at preconception. During pregnancy 359 (66.7%) women had anaemia of which 85 (15.8%) women had moderate-to-severe anaemia (Hb ≤9 g/dL) and 33 (6.1%) women had severe anaemia (Hb ≤8 g/dL). In total, 185 (34.4%) women were diagnosed with malaria during pregnancy. FUTURE PLANS The project will provide new knowledge on how health, even before conception, might modify the risk of developing NCDs and how to promote better health during pregnancy. The present project ended data collection 1 month after giving birth, but follow-up is continuing through regular monitoring of growth and development and health events according to the National Road Map Strategic Plan in Tanzania. This data will link fetal adverse event to childhood development, and depending on further grant allocation, through a life course follow-up.
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Affiliation(s)
- Line Hjort
- Department of Endocrinology, Rigshospitalet, Copenhagen, Denmark
| | - Sofie Lykke Møller
- Section of Global Health, Departmentof Public Health, Copenhagen University, Copenhagen, Denmark
| | - Daniel Minja
- National Institute for Medical Research, Tanga Research centre, Tanga, United Republic of Tanzania
| | - Omari Msemo
- National Institute for Medical Research, Tanga Research centre, Tanga, United Republic of Tanzania
| | | | - Dirk Lund Christensen
- Section of Global Health, Departmentof Public Health, Copenhagen University, Copenhagen, Denmark
| | - Thor Theander
- Center for Medical Parasitology, Department of Immunology and Microbiology, Copenhagen University, Copenhagen, Denmark
| | - Karsten Nielsen
- Department of Histopathology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Louise Groth Grunnet
- Department of Endocrinology, Rigshospitalet, Copenhagen, Denmark
- Section of Global Health, Departmentof Public Health, Copenhagen University, Copenhagen, Denmark
| | - Leif Groop
- Department of Clinical Sciences, Clinical Research Centre, Lunds Universitet, Lund, Sweden
- Finnish Institute of Molecular Medicine, Helsinki University, Helsinki, Finland
| | - Rashmi Prasad
- Department of Clinical Sciences, Clinical Research Centre, Lunds Universitet, Lund, Sweden
| | - John Lusingu
- National Institute for Medical Research, Tanga Research centre, Tanga, United Republic of Tanzania
- Center for Medical Parasitology, Department of Immunology and Microbiology, Copenhagen University, Copenhagen, Denmark
| | - Christentze Schmiegelow
- Center for Medical Parasitology, Department of Immunology and Microbiology, Copenhagen University, Copenhagen, Denmark
| | - Ib C Bygbjerg
- Section of Global Health, Departmentof Public Health, Copenhagen University, Copenhagen, Denmark
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Young MF, Oaks BM, Tandon S, Martorell R, Dewey KG, Wendt AS. Maternal hemoglobin concentrations across pregnancy and maternal and child health: a systematic review and meta-analysis. Ann N Y Acad Sci 2019; 1450:47-68. [PMID: 30994929 PMCID: PMC6767572 DOI: 10.1111/nyas.14093] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/05/2019] [Accepted: 03/19/2019] [Indexed: 12/14/2022]
Abstract
Maternal anemia is a well‐recognized global health problem; however, there remain questions on specific hemoglobin (Hb) thresholds that predict health risk or protection for mother and child. We conducted a systematic review and meta‐analysis to examine the associations of maternal Hb concentrations with a range of maternal and infant health outcomes, accounting for the timing of measurement (preconception, and first, second, and third trimesters), etiology of anemia, and cutoff category. The systematic review included 272 studies and the meta‐analysis included 95 studies. Low maternal Hb (<110 g/L) was associated with poor birth outcomes (low birth weight, preterm birth, small‐for‐gestational‐age (SGA), stillbirth, and perinatal and neonatal mortality) and adverse maternal outcomes (postpartum hemorrhage, preeclampsia, and blood transfusion). High maternal Hb (>130 g/L) was associated with increased odds of SGA, stillbirth, preeclampsia, and gestational diabetes. Relationships varied by the timing of measurement and cutoff category (stronger associations with lower cutoffs); limited data were available on anemia etiology. There were insufficient data for other maternal outcomes and long‐term child health outcomes. Current data are insufficient for determining if revisions to current Hb cutoffs are required. Pooled high‐quality individual‐level data analyses, as well as prospective cohort studies, would be valuable to inform the reevaluation of Hb cutoffs.
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Affiliation(s)
- Melissa F Young
- Hubert Department of Global Health, Emory University, Atlanta, Georgia
| | - Brietta M Oaks
- Department of Nutrition and Food Sciences, University of Rhode Island, Kingston, Rhode Island
| | - Sonia Tandon
- Hubert Department of Global Health, Emory University, Atlanta, Georgia
| | | | - Kathryn G Dewey
- Department of Nutrition, University of California, Davis, Davis, California
| | - Amanda S Wendt
- Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany
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Schmiegelow C, Msemo OA, Møller SL, Nielsen BB, Paulsen CB, Ødum L, Theander TG, Kavishe RA, Lusingu JPA, Minja DT, Bygbjerg IC. Preconceptional factors associated with haemoglobin concentration in early pregnancy: a community-based cohort study in rural northeastern Tanzania. Trop Med Int Health 2019; 24:596-607. [PMID: 30767358 DOI: 10.1111/tmi.13219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Maternal anaemia in early pregnancy is associated with poor pregnancy outcomes. Furthermore, preconceptional health can influence the health during pregnancy. The aim of this study was to investigate which preconceptional factors were associated with haemoglobin (Hb) concentration in early pregnancy. METHODS In Tanzania, 226 women were followed at preconception and during early pregnancy. Red blood cell (RBC) morphology, serum micronutrient concentration, demographic characteristics and health status were assessed in preconception and in early pregnancy. The association between preconceptional factors and Hb concentration in early pregnancy was investigated using simple and multiple linear regression analyses stratified by preconceptional anaemia status. RESULTS Mean Hb was 123 and 119 g/l before conception and during early pregnancy (median gestational age 53 days) respectively. Preconceptional mid-upper arm circumference (MUAC) (adjusted coefficient (AC) 0.35 95% CI 0.9-0.61) and preconceptional Hb concentration (AC 0.45 95% CI 0.36-0.54) were positively associated with early pregnancy Hb concentration, whereas preconceptional microcytic hypochromic RBC morphology (AC -6.00 95% CI -9.56 to -2.44) was negatively associated with early pregnancy Hb concentration. In addition, treatment of preconceptional malaria was positively associated with early pregnancy Hb concentration (AC 6.45 95% CI 0.74-12.2) among women with preconceptional anaemia. In contrast, among preconceptional non-anaemic women, only preconceptional Hb concentration and medium socio-economic status was positively associated with early pregnancy Hb concentration. CONCLUSIONS Mid-upper arm circumference (MUAC) and Hb measurements in preconception can help to detect women at increased risk of low Hb concentration in early pregnancy.
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Affiliation(s)
- Christentze Schmiegelow
- Department of Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark
| | - Omari Abdul Msemo
- National Institute for Medical Research Tanga Centre, Korogwe, Tanzania
| | - Sofie Lykke Møller
- Department of Public Health, Division of Global Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Cecilie Bøge Paulsen
- Department of Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark
| | - Lars Ødum
- Department for Clinical Biochemistry, Roskilde Hospital, Roskilde, Denmark
| | - Thor Grundtvig Theander
- Department of Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark
| | - Reginald Adolph Kavishe
- Kilimanjaro Christian Medical University College and Kilimanjaro Clinical Research Institute, Moshi, Tanzania
| | - John Peter Andrea Lusingu
- Department of Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark.,National Institute for Medical Research Tanga Centre, Korogwe, Tanzania
| | | | - Ib Christian Bygbjerg
- Department of Public Health, Division of Global Health, University of Copenhagen, Copenhagen, Denmark
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Begum K, Ouédraogo CT, Wessells KR, Young RR, Faye MT, Wuehler SE, Hess SY. Prevalence of and factors associated with antenatal care seeking and adherence to recommended iron-folic acid supplementation among pregnant women in Zinder, Niger. MATERNAL AND CHILD NUTRITION 2019; 14 Suppl 1. [PMID: 29493896 DOI: 10.1111/mcn.12466] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 03/14/2017] [Accepted: 03/21/2017] [Indexed: 01/14/2023]
Abstract
The World Health Organization recommends iron and folic acid (IFA) supplementation for pregnant women. The high prevalence of anaemia among pregnant women in Niger warrants better understanding of the utilization of antenatal care (ANC) and IFA. We aimed to assess the prevalence of and factors associated with ANC coverage and adherence to IFA recommendation among pregnant women. Pregnant women (n = 923) from 64 randomly selected villages within the catchment area of 12 health centres were interviewed during a baseline household survey in Zinder, Niger. ANC and IFA coverage were 60.1% and 43.6%, respectively. Only 71.7% of women who attended ANC received IFA. Of the 401 women who reportedly received any IFA supplements, 99.3% had attended any ANC during their current pregnancy and 68.6% reported adherence to recommended IFA supplementation (i.e., consumed IFA every day in the previous week). Women with gestational age ≥27 weeks were more likely to have attended ANC than women with gestational age <27 weeks (85.9% vs. 27.5%, odds ratio [OR]: 21.81, 95% confidence interval [CI]: 13.81, 34.45). Women who reportedly received husbands' advice about attending ANC were more likely to attend ANC (OR: 1.48, 95% CI [1.03, 2.11]) and adhere to IFA recommendations (OR: 1.80, 95% CI [1.04, 3.13]) compared to those who did not receive any advice. ANC attendance is crucial to ensure distribution of IFA supplementation among pregnant women in Zinder. Interventions to improve ANC and IFA adherence will require promotion of early ANC, ensure availability of IFA at ANC, and involve husbands in ANC.
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Affiliation(s)
- Khadija Begum
- Program in International and Community Nutrition, Department of Nutrition, University of California, Davis, California, USA
| | - Césaire T Ouédraogo
- Program in International and Community Nutrition, Department of Nutrition, University of California, Davis, California, USA.,Helen Keller International, Niamey, Niger
| | - K Ryan Wessells
- Program in International and Community Nutrition, Department of Nutrition, University of California, Davis, California, USA
| | - Rebecca R Young
- Program in International and Community Nutrition, Department of Nutrition, University of California, Davis, California, USA
| | | | | | - Sonja Y Hess
- Program in International and Community Nutrition, Department of Nutrition, University of California, Davis, California, USA
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A Case of Pregnancy Complicated with Evans Syndrome with Sequential Development of Autoimmune Warm Antibody Hemolytic Anemia and Idiopathic Thrombocytopenic Purpura. Case Rep Obstet Gynecol 2019; 2019:2093612. [PMID: 30733882 PMCID: PMC6348819 DOI: 10.1155/2019/2093612] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 12/06/2018] [Accepted: 12/25/2018] [Indexed: 11/17/2022] Open
Abstract
The simultaneous or sequential development of autoimmune hemolytic anemia (AIHA) and idiopathic thrombocytopenic purpura (ITP) is known as Evans syndrome. We experienced a case of Evans syndrome that developed AIHA during pregnancy and ITP long after delivery. The patient was a 35-year-old pregnant woman (gravida 2, para 1). A routine blood test at 28 weeks of gestation revealed moderate macrocytic anemia. Her haptoglobin level was markedly low, and a direct antiglobulin test (DAT) was positive. Based on these results, AIHA was considered. A healthy female newborn with bodyweight 3575 g was vaginally delivered uneventfully. After delivery, the DAT remained positive, but anemia did not develop. At 203 days after delivery, ITP was detected. Because AIHA and ITP developed sequentially, she was diagnosed with Evans syndrome. When AIHA occurs during pregnancy, long-term follow-up is needed because ITP can develop sequentially.
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23
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Srour MA, Aqel SS, Srour KM, Younis KR, Samarah F. Prevalence of Anemia and Iron Deficiency among Palestinian Pregnant Women and Its Association with Pregnancy Outcome. Anemia 2018; 2018:9135625. [PMID: 30675398 PMCID: PMC6323536 DOI: 10.1155/2018/9135625] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/04/2018] [Accepted: 12/11/2018] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Anemia is a public health problem especially among pregnant women. This study aimed to investigate the prevalence of anemia and iron deficiency among pregnant women and its association with pregnancy outcome in Hebron Governorate in southern Palestine. METHODS This is a cross-sectional study that included 300 pregnant women in their first trimester and 163 babies. Maternal anthropometric and socioeconomic and newborns' data were collected. Complete blood count for study subjects and maternal serum ferritin were measured. RESULTS The prevalence of iron deficiency anemia among pregnant women was 25.7% and 52% of them had depleted iron stores. When pregnant women were grouped into three hemoglobin (Hb) tertile groups, a significant difference was observed between maternal Hb and newborns' birth weight (P= 0.009), height (P= 0.022), head circumference (P= 0.017), and gestational age (P= 0.012). There was a significant association between maternal serum ferritin and frequency of low birth weight (P= 0.001) and frequency of preterm delivery (P= 0.003). No significant association was observed between maternal anthropometric measures or the socioeconomic status and pregnancy outcomes. CONCLUSION Iron deficiency is a moderate public health problem among the study subjects. Maternal Hb and serum ferritin significantly affect pregnancy outcomes.
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Affiliation(s)
- Mahmoud A. Srour
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al-Quds University, East Jerusalem, State of Palestine
- Department of Biology & Biochemistry, Birzeit University, Birzeit, State of Palestine
| | - Samah S. Aqel
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al-Quds University, East Jerusalem, State of Palestine
| | - Khaled M. Srour
- Anatomy and Physiology Department, Faculty of Medicine, Al-Quds University, East Jerusalem, State of Palestine
| | - Khalid R. Younis
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al-Quds University, East Jerusalem, State of Palestine
| | - Fekri Samarah
- Department of Medical Laboratory Sciences, Arab-American University, Jenin, State of Palestine
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Msemo OA, Bygbjerg IC, Møller SL, Nielsen BB, Ødum L, Perslev K, Lusingu JPA, Kavishe RA, Minja DTR, Schmiegelow C. Prevalence and risk factors of preconception anemia: A community based cross sectional study of rural women of reproductive age in northeastern Tanzania. PLoS One 2018; 13:e0208413. [PMID: 30562390 PMCID: PMC6298689 DOI: 10.1371/journal.pone.0208413] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 11/16/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Anemia is a major public health problem that adversely affects pregnancy outcomes. The prevalence of anemia among pregnant women before conception is not well known in Tanzania. The aim of this study was to determine the prevalence, types, and risk factors of preconception anemia in women of reproductive age from a rural Tanzanian setting. METHODS Trained field workers visited households to identify all female residents aged 18-40 years and invited them to the nearby health facility for screening and enrolment into this study. Baseline samples were collected to measure hemoglobin levels, serum ferritin, vitamin B12, folate, C-reactive protein, alanine amino-transferase, the presence of malaria, HIV, and soil transmitted helminth infections. Anthropometric and socio-economic data were recorded alongside with clinical information of participants. Logistic regression analysis was used to determine the adjusted odds ratios (AOR) for the factors associated with preconception anemia. FINDINGS Of 1248 women enrolled before conception, 36.7% (95% confidence interval (CI) 34.1-39.4) had anemia (hemoglobin <12 g/dL) and 37.6% (95% CI 34.9-40.4) had iron deficiency. For more than half of the anemic cases, iron deficiency was also diagnosed (58.8%, 95% CI 54.2-63.3). Anemia was independently associated with increased age (AOR 1.05, 95% CI 1.03-1.07), malaria infection at enrolment (AOR 2.21, 95% CI 1.37-3.58), inflammation (AOR 1.77, 95% CI 1.21-2.60) and iron deficiency (AOR 4.68, 95% CI 3.55-6.17). The odds of anemia were reduced among women with increased mid-upper arm circumference (AOR 0.90, 95% CI 0.84-0.96). CONCLUSION Anemia among women of reproductive age before conception was prevalent in this rural setting. Increased age, iron deficiency, malaria infection and inflammation were significant risk factors associated with preconception anemia, whereas increased mid-upper arm circumference was protective against anemia. Interventions to ensure adequate iron levels as well as malaria control before conception are needed to prevent anemia before and during pregnancy and improve birth outcomes in this setting. TRIAL REGISTRATION NCT02191683.
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Affiliation(s)
- Omari A. Msemo
- National Institute for Medical Research, Tanga Centre, Tanga, Tanzania
| | - Ib C. Bygbjerg
- Section of Global Health, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Sofie L. Møller
- Section of Global Health, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Birgitte B. Nielsen
- Department of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Ødum
- Department of Clinical Biochemistry, Roskilde Hospital, Rokslide, Denmark
| | - Kathrine Perslev
- Centre for Medical Parasitology, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | | | | | | | - Christentze Schmiegelow
- Centre for Medical Parasitology, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
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25
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Jourabchi Z, Sharif S, Lye MS, Saeed A, Khor GL, Tajuddin SHS. Association Between Preconception Care and Birth Outcomes. Am J Health Promot 2018; 33:363-371. [PMID: 30011998 DOI: 10.1177/0890117118779808] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE To evaluate the association between preconception care and the risk of adverse birth outcomes. DESIGN A quasi-experimental study comparing 2 groups: (1) integrated maternal health care (MHC) program (with preconception care) and (2) standard MHC program (without preconception care). SETTING Maternal health-care clinics in Alvand and Qazvin cities in Qazvin Province, Iran. PARTICIPANTS A total of 152 and 247 Iranian women aged 16 to 35 years were enrolled in the integrated MHC and standard MHC program, respectively. MEASURES The birth outcomes measured included low birth weight, preterm birth, maternal and neonatal complications, and mode of delivery (normal vaginal delivery and cesarean delivery). ANALYSIS Multiple logistic regression was performed to determine the impact of preconception care and risk of adverse birth outcomes with adjusted odds ratios (ORs) as effect sizes. RESULTS One hundred forty-seven women in integrated MHC and 218 women in standard MHC completed this study. Preconception care was associated with reduced risk of preterm birth (OR = 0.298; 95% confidence interval [CI] = 0.120-0.743; P = .009), low birth weight (OR = 0.406; 95% CI = 0.169-0.971; P = .043), maternal complication (OR = 0.399; 95% CI = 0.241-0.663; P < .001), and neonatal complications (OR = 0.460; 95% CI = 0.275-0.771; P = .003). CONCLUSION The findings of the present study revealed advantages of preconception care with reduced adverse birth outcomes.
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Affiliation(s)
- Zinat Jourabchi
- 1 Department of Midwifery, Faculty of Nursing and Midwifery, Qazvin University of Medical and Health Sciences, Qazvin, Iran
| | - Sazlina Sharif
- 2 Department of Family Medicine, Faculty of Medicine and Health Sciences, University Putra Malaysia, Seri Kembangan, Malaysia
| | - Munn Sann Lye
- 3 Department of Community Health, Faculty of Medicine and Health Sciences, University Putra Malaysia, Seri Kembangan, Malaysia
| | - Asefzadeh Saeed
- 4 Department of Health Administration, Qazvin University of Medical and Health Sciences, Qazvin, Iran
| | - Geok Lin Khor
- 5 Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, University Putra Malaysia, Seri Kembangan, Malaysia
| | - Syed Hassan Syed Tajuddin
- 6 Department of Nursing, Faculty of Medicine and Health Sciences, University Putra Malaysia, Seri Kembangan, Malaysia
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Preconception Hb concentration and risk of preterm birth in over 2·7 million Chinese women aged 20-49 years: a population-based cohort study. Br J Nutr 2018; 120:508-516. [PMID: 29986785 DOI: 10.1017/s0007114518001721] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Evidence on the association between maternal Hb concentration and preterm birth (PTB) risk is inconclusive. This paper aimed to explore whether women with anaemia or high Hb level before pregnancy would be at higher risk of PTB. We conducted a population-based cohort study with 2 722 274 women aged 20-49 years, who participated in National Free Pre-Pregnancy Checkups Project between 2013 and 2015 and delivered a singleton before 2016 in rural China. Logistic models were used to estimate OR and 95 % CI after adjusting for confounding variables. Restricted cubic spline models were applied to evaluate the dose-response relationships. A total of 192 819 (7·08 %) women had preterm deliveries. Compared with women with Hb of 110-149 g/l, the multivariable-adjusted OR for PTB was 1·19 (95 % CI 0·98, 1·44) for women with Hb<70 g/l, 1·01 (95 % CI 0·97, 1·03) for 70-99 g/l, 0·96 (95 % CI 0·95, 0·98) for 100-109 g/l, 1·04 (95 % CI 1·01, 1·06) for 150-159 g/l, 1·11 (95 % CI 1·05, 1·17) for 160-169 g/l and 1·19 (95 % CI 1·11, 1·27) for ≥170 g/l, respectively. The multivariable-adjusted OR for very PTB (VPTB) was 1·07 (95 % CI 1·03, 1·12) and 1·06 (95 % CI 1·01, 1·12) for women with Hb <110 and ≥150 g/l, compared with those with Hb of 110-149 g/l, respectively. Our study identified a U-shaped relationship between maternal preconception Hb concentration and PTB risk. Both preconception anaemia and high Hb level can significantly increase VPTB risk. Appropriate intervention for women with abnormal Hb levels before pregnancy is very necessary.
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Lynch S, Pfeiffer CM, Georgieff MK, Brittenham G, Fairweather-Tait S, Hurrell RF, McArdle HJ, Raiten DJ. Biomarkers of Nutrition for Development (BOND)-Iron Review. J Nutr 2018; 148:1001S-1067S. [PMID: 29878148 PMCID: PMC6297556 DOI: 10.1093/jn/nxx036] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/27/2017] [Accepted: 11/07/2017] [Indexed: 12/20/2022] Open
Abstract
This is the fifth in the series of reviews developed as part of the Biomarkers of Nutrition for Development (BOND) program. The BOND Iron Expert Panel (I-EP) reviewed the extant knowledge regarding iron biology, public health implications, and the relative usefulness of currently available biomarkers of iron status from deficiency to overload. Approaches to assessing intake, including bioavailability, are also covered. The report also covers technical and laboratory considerations for the use of available biomarkers of iron status, and concludes with a description of research priorities along with a brief discussion of new biomarkers with potential for use across the spectrum of activities related to the study of iron in human health.The I-EP concluded that current iron biomarkers are reliable for accurately assessing many aspects of iron nutrition. However, a clear distinction is made between the relative strengths of biomarkers to assess hematological consequences of iron deficiency versus other putative functional outcomes, particularly the relationship between maternal and fetal iron status during pregnancy, birth outcomes, and infant cognitive, motor and emotional development. The I-EP also highlighted the importance of considering the confounding effects of inflammation and infection on the interpretation of iron biomarker results, as well as the impact of life stage. Finally, alternative approaches to the evaluation of the risk for nutritional iron overload at the population level are presented, because the currently designated upper limits for the biomarker generally employed (serum ferritin) may not differentiate between true iron overload and the effects of subclinical inflammation.
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Affiliation(s)
| | - Christine M Pfeiffer
- National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA
| | - Michael K Georgieff
- Division of Neonatology, Department of Pediatrics, University of Minnesota School of Medicine, Minneapolis, MN
| | - Gary Brittenham
- Division of Pediatric Hematology, Oncology and Stem Cell Transplant, Department of Pediatrics, Columbia University College of Physicians and Surgeons, New York, NY
| | - Susan Fairweather-Tait
- Department of Nutrition, Norwich Medical School, Norwich Research Park, University of East Anglia, Norwich NR4 7JT, UK
| | - Richard F Hurrell
- Institute of Food, Nutrition and Health, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Harry J McArdle
- Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen AB21 9SB, UK
| | - Daniel J Raiten
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH)
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Reddy MB, Armah SM, Stewart JW, O'Brien KO. Iron Absorption from Iron-Enriched Aspergillus oryzae Is Similar to Ferrous Sulfate in Healthy Female Subjects. Curr Dev Nutr 2018; 2:nzy004. [PMID: 30019027 PMCID: PMC6041945 DOI: 10.1093/cdn/nzy004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/26/2017] [Accepted: 01/11/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Iron deficiency anemia (IDA) remains a global health issue, affecting mainly children and adolescent and pregnant women. Because of problems associated with current iron compounds used in both supplementation and fortification areas, there is an emerging interest in new natural iron sources to combat IDA. OBJECTIVE The objective of this study was to compare the iron absorption of iron-enriched Aspergillus oryzae [Aspiron (ASP)] with FeSO4 in humans. METHODS Iron absorption was assessed using stable isotope and serum iron response methods after oral intake of iron by healthy women in 2 separate studies. In the first study, ASP was intrinsically labelled with 58Fe into a dry form containing 8% iron. Subjects (n = 16, 18-35 y) were randomly assigned to consume liquid semipurified meals labelled with 2 stable iron isotopes, 57FeSO4 (10 mg) and ASP containing 2 mg 58Fe and 8 mg natural abundance iron, in 2 visits. Isotope enrichment was measured 2 wk after the last meal was eaten. In the second study, 17 subjects were randomly assigned to consume a test meal with 3 iron supplements during 3 separate visits: FeSO4, 10 mg Fe, and ASP in 2 iron doses, 10 mg and 20 mg. Changes in serum iron were measured at regular intervals for 4 h after supplementation. RESULTS The first study showed that the difference in iron absorption from FeSO4 and ASP was not significant (17.18% ± 14.2% compared to 15.14% ± 12.3%; P = 0.07). The results of the second study suggested that the iron from ASP was released slowly compared to FeSO4 and the area under the curve did not reflect the absorption of ASP iron, but rather the rate of iron release. CONCLUSIONS Iron-enriched A. oryzae has high relative bioavailability and may cause lower iron surges into the blood compared to FeSO4.
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Affiliation(s)
- Manju B Reddy
- Department of Food Sciences and Human Nutrition, Iowa State University, Ames, IA
| | - Seth M Armah
- Department of Food Sciences and Human Nutrition, Iowa State University, Ames, IA
| | - Jeanne W Stewart
- Department of Food Sciences and Human Nutrition, Iowa State University, Ames, IA
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Matsuzaki M, Kusaka M, Sugimoto T, Shiraishi M, Kobayashi R, Watanabe S, Haruna M. The Effects of a Yoga Exercise and Nutritional Guidance Program on Pregnancy Outcomes Among Healthy Pregnant Japanese Women: A Study Protocol for a Randomized Controlled Trial. J Altern Complement Med 2018; 24:603-610. [PMID: 29443533 DOI: 10.1089/acm.2017.0119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES This report provides an experimental protocol for a study designed to verify the effects of yoga exercise and a nutritional guidance program during pregnancy on several key pregnancy and birth outcomes among Japanese women. DESIGN This is a study protocol of a randomized controlled trial. SETTING/LOCATION This intervention will be carried out in a university hospital in Tokyo. SUBJECTS Healthy primiparous women will be recruited at 18-23 gestational weeks in the hospital. A total of 400 participants will be randomly assigned to one of four groups in this trial, with 100 participants in each group-group with yoga exercise, with nutritional guidance, with both yoga and nutritional guidance, and with standard care alone, as the control group. Yoga exercise consists of yoga classes held at the hospital 3 or 5 days a month, duration 60 min, and home practice using a digital video disk, duration 30 or 60 min per session. We recommend participants do yoga at least 3 days a week for a total of 60 min per day. Nutritional guidance is based on individual dietary intake assessed using a brief-type diet history questionnaire. RESULTS The primary outcome is rate of pregnant women with adequate gestational weight gain. Secondary outcomes include physiologic and psychologic status assessed via biomarkers and health-related scales, dietary nutrition intake, and birth outcomes. CONCLUSIONS This study shows the effects of a yoga exercise and nutritional intervention. If the intervention is found to be effective, our results will be useful for healthcare providers and pregnant women.
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Affiliation(s)
- Masayo Matsuzaki
- 1 Division of Health Sciences and Nursing, Department of Midwifery and Women's Health, Graduate School of Medicine, The University of Tokyo , Tokyo, Japan .,2 Division of Health Science, Department of Children and Women's Health, Graduate School of Medicine, Osaka University , Osaka, Japan
| | - Momoko Kusaka
- 2 Division of Health Science, Department of Children and Women's Health, Graduate School of Medicine, Osaka University , Osaka, Japan
| | - Takashi Sugimoto
- 3 Health Technology Assessment and Public Policy, Graduate School of Public Policy, The University of Tokyo , Tokyo, Japan
| | - Mie Shiraishi
- 2 Division of Health Science, Department of Children and Women's Health, Graduate School of Medicine, Osaka University , Osaka, Japan
| | - Risa Kobayashi
- 2 Division of Health Science, Department of Children and Women's Health, Graduate School of Medicine, Osaka University , Osaka, Japan
| | - Sachi Watanabe
- 2 Division of Health Science, Department of Children and Women's Health, Graduate School of Medicine, Osaka University , Osaka, Japan
| | - Megumi Haruna
- 2 Division of Health Science, Department of Children and Women's Health, Graduate School of Medicine, Osaka University , Osaka, Japan
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Pfeiffer CM, Looker AC. Laboratory methodologies for indicators of iron status: strengths, limitations, and analytical challenges. Am J Clin Nutr 2017; 106:1606S-1614S. [PMID: 29070545 PMCID: PMC5701713 DOI: 10.3945/ajcn.117.155887] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Biochemical assessment of iron status relies on serum-based indicators, such as serum ferritin (SF), transferrin saturation, and soluble transferrin receptor (sTfR), as well as erythrocyte protoporphyrin. These indicators present challenges for clinical practice and national nutrition surveys, and often iron status interpretation is based on the combination of several indicators. The diagnosis of iron deficiency (ID) through SF concentration, the most commonly used indicator, is complicated by concomitant inflammation. sTfR concentration is an indicator of functional ID that is not an acute-phase reactant, but challenges in its interpretation arise because of the lack of assay standardization, common reference ranges, and common cutoffs. It is unclear which indicators are best suited to assess excess iron status. The value of hepcidin, non-transferrin-bound iron, and reticulocyte indexes is being explored in research settings. Serum-based indicators are generally measured on fully automated clinical analyzers available in most hospitals. Although international reference materials have been available for years, the standardization of immunoassays is complicated by the heterogeneity of antibodies used and the absence of physicochemical reference methods to establish "true" concentrations. From 1988 to 2006, the assessment of iron status in NHANES was based on the multi-indicator ferritin model. However, the model did not indicate the severity of ID and produced categorical estimates. More recently, iron status assessment in NHANES has used the total body iron stores (TBI) model, in which the log ratio of sTfR to SF is assessed. Together, sTfR and SF concentrations cover the full range of iron status. The TBI model better predicts the absence of bone marrow iron than SF concentration alone, and TBI can be analyzed as a continuous variable. Additional consideration of methodologies, interpretation of indicators, and analytic standardization is important for further improvements in iron status assessment.
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Affiliation(s)
| | - Anne C Looker
- National Center for Health Statistics, Centers for Disease Control and Prevention, Atlanta, GA
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31
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Johnson W, Elmrayed SA, Sosseh F, Prentice AM, Moore SE. Preconceptional and gestational weight trajectories and risk of delivering a small-for-gestational-age baby in rural Gambia. Am J Clin Nutr 2017; 105:1474-1482. [PMID: 28490512 PMCID: PMC5445671 DOI: 10.3945/ajcn.116.144196] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 03/29/2017] [Indexed: 12/18/2022] Open
Abstract
Background: Maternal nutritional status is a key determinant of small for gestational age (SGA), but some knowledge gaps remain, particularly regarding the role of the energy balance entering pregnancy.Objective: We investigated how preconceptional and gestational weight trajectories (summarized by individual-level traits) are associated with SGA risk in rural Gambia.Design: The sample comprised 670 women in a trial with serial weight data (7310 observations) that were available before and during pregnancy. Individual trajectories from 6 mo before conception to 30 wk of gestation were produced with the use of multilevel modeling. Summary traits were expressed as weight z scores [weight z score at 3 mo preconception (zwt-3 mo), weight z score at conception, weight z score at 3 mo postconception, weight z score at 7 mo postconception (zwt+7 mo), and conditional measures that represented the change from the preceding time] and were related to SGA risk with the use of Poisson regression with confounder adjustment; linear splines were used to account for nonlinearity.Results: Maternal weight at each time point had a consistent nonlinear relation with SGA risk. For example, the zwt-3 mo estimate was stronger in women with values ≤0.5 (RR: 0.736; 95% CI: 0.594, 0.910) than in women with values >0.5 (RR: 0.920; 95% CI: 0.682, 1.241). The former group had the highest observed SGA prevalence. Focusing on weight change, only conditional zwt+7 mo was associated with SGA and only in women with values >-0.5 (RR: 0.579; 95% CI: 0.463, 0.724).Conclusions: Protection against delivering an SGA neonate offered by greater preconceptional or gestational weight may be most pronounced in more undernourished and vulnerable women. Independent of this possibility, greater second- and third-trimester weight gain beyond a threshold may be protective. This trial was registered at http://www.isrctn.com/ as ISRCTN49285450.
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Affiliation(s)
- William Johnson
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom;
| | - Seham Aa Elmrayed
- Medical Research Council (MRC) Elsie Widdowson Laboratory, Cambridge, United Kingdom
| | - Fatou Sosseh
- Nutrition Theme, MRC Unit The Gambia, Banjul, Gambia
| | - Andrew M Prentice
- Nutrition Theme, MRC Unit The Gambia, Banjul, Gambia
- MRC International Nutrition Group, London School of Hygiene & Tropical Medicine, London, United Kingdom; and
| | - Sophie E Moore
- Nutrition Theme, MRC Unit The Gambia, Banjul, Gambia
- Division of Women's Health, King's College London, London, United Kingdom
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Alwan NA, Hamamy H. Maternal Iron Status in Pregnancy and Long-Term Health Outcomes in the Offspring. J Pediatr Genet 2016; 4:111-23. [PMID: 27617121 DOI: 10.1055/s-0035-1556742] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Iron is an essential micronutrient and is important not only in carrying oxygen but also to the catalytic activity of a variety of enzymes. In the fetus, it is vital to the synthesis of hemoglobin and in brain development. Iron deficiency (ID) anemia in pregnancy is a common problem, even in high-income country settings. Around 50% of pregnant women worldwide are anemic, with at least half of this burden due to ID. Iron supplements are widely recommended and used during pregnancy globally. However, the evidence on the extent of benefit they contribute to the offspring's health is not well established, and their routine use has its side effects and drawbacks. Dietary iron intake is difficult to assess accurately and it is unlikely to be sufficient to meet the demands of pregnancy if women start with inadequate body iron stores at conception. Evidence from experimental animal models suggests that maternal ID during pregnancy is associated with fetal growth restriction, as well as offspring obesity and high blood pressure later in life. The possible biological mechanisms for this observed association may be due to ID-induced changes in placental structure and function, enzyme expression, nutrient absorption, and fetal organ development. However, such evidence is limited in human studies. Prenatal ID in experimental animal models also adversely affected the developing brain structures, neurotransmitter systems, and myelination resulting in acute brain dysfunction during the period of deficiency and persistence of various postnatal neurobehavioral abnormalities as well as persistent dysregulation of some genes into adult life after iron repletion pointing to the possibility of gene expression changes. The evidence from human population studies is limited and heterogeneous and more research is needed in the future, investigating the effects of ID in pregnancy on future offspring health outcomes.
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Affiliation(s)
- Nisreen A Alwan
- Academic Unit of Primary Care and Population Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Hanan Hamamy
- Department of Genetic Medicine and Development, University of Geneva, Geneva, Switzerland
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Kile ML, Faraj JM, Ronnenberg AG, Quamruzzaman Q, Rahman M, Mostofa G, Afroz S, Christiani DC. A cross sectional study of anemia and iron deficiency as risk factors for arsenic-induced skin lesions in Bangladeshi women. BMC Public Health 2016; 16:158. [PMID: 26880234 PMCID: PMC4754934 DOI: 10.1186/s12889-016-2824-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 02/03/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In the Ganges Delta, chronic arsenic poisoning is a health concern affecting millions of people who rely on groundwater as their potable water source. The prevalence of anemia is also high in this region, particularly among women. Moreover, arsenic is known to affect heme synthesis and erythrocytes and the risk of arsenic-induced skin lesions appears to differ by sex. METHODS We conducted a case-control study in 147 arsenic-exposed Bangladeshi women to assess the association between anemia and arsenic-induced skin lesions. RESULTS We observed that the odds of arsenic-related skin lesions were approximately three times higher among women who were anemic (hemoglobin < 120 g/L) compared to women with normal hemoglobin levels [Odds Ratio (OR) = 3.32, 95% Confidence Intervals (CI): 1.29, 8.52] after adjusting for arsenic levels in drinking water and other covariates. Furthermore, 75% of the women with anemia had adequate iron stores (serum ferritin ≥ 12 μg/L), suggesting that the majority of anemia detected in this population was unrelated to iron depletion. CONCLUSIONS Considering the magnitude of arsenic exposure and prevalence of anemia in Bangladeshi women, additional research is warranted that identifies the causes of anemia so that effective interventions can be implemented while arsenic remediation efforts continue.
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Affiliation(s)
- Molly L Kile
- College of Public Health and Human Sciences, Oregon State University, 15 Milam Hall, Corvallis, OR, 97331, USA.
| | - Joycelyn M Faraj
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, 100 Holdsworth Way, Amherst, MA, 01003, USA.
| | - Alayne G Ronnenberg
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, 100 Holdsworth Way, Amherst, MA, 01003, USA.
| | - Quazi Quamruzzaman
- Dhaka Community Hospital Trust, 190/1 Baro Moghbazar, Wireless Railgate, Dhaka, Bangladesh.
| | - Mahmudar Rahman
- Dhaka Community Hospital Trust, 190/1 Baro Moghbazar, Wireless Railgate, Dhaka, Bangladesh.
| | - Golam Mostofa
- Dhaka Community Hospital Trust, 190/1 Baro Moghbazar, Wireless Railgate, Dhaka, Bangladesh.
| | - Sakila Afroz
- Dhaka Community Hospital Trust, 190/1 Baro Moghbazar, Wireless Railgate, Dhaka, Bangladesh.
| | - David C Christiani
- Department of Environmental Health, Harvard TH Chan School of Public Health, 677 Huntington Avenue, Boston, MA, USA.
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Brabin BJ, Gies S, Owens S, Claeys Y, D'Alessandro U, Tinto H, Brabin L. Perspectives on the design and methodology of periconceptional nutrient supplementation trials. Trials 2016; 17:58. [PMID: 26833080 PMCID: PMC4736099 DOI: 10.1186/s13063-015-1124-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 12/15/2015] [Indexed: 01/22/2023] Open
Abstract
Periconceptional supplementation could extend the period over which maternal and fetal nutrition is improved, but there are many challenges facing early-life intervention studies. Periconceptional trials differ from pregnancy supplementation trials, not only because of the very early or pre-gestational timing of nutrient exposure but also because they generate subsidiary information on participants who remain non-pregnant. The methodological challenges are more complex although, if well designed, they provide opportunities to evaluate concurrent hypotheses related to the health of non-pregnant women, especially nulliparous adolescents. This review examines the framework of published and ongoing randomised trial designs. Four cohorts typically arise from the periconceptional trial design--two of which are non-pregnant and two are pregnant--and this structure provides assessment options related to pre-pregnant, maternal, pregnancy and fetal outcomes. Conceptually the initial decision for single or micronutrient intervention is central--as is the choice of dosage and content--in order to establish a comparative framework across trials, improve standardisation, and facilitate interpretation of mechanistic hypotheses. Other trial features considered in the review include: measurement options for baseline and outcome assessments; adherence to long-term supplementation; sample size considerations in relation to duration of nutrient supplementation; cohort size for non-pregnant and pregnant cohorts as the latter is influenced by parity selection; integrating qualitative studies and data management issues. Emphasis is given to low resource settings where high infection rates and the possibility of nutrient-infection interactions may require appropriate safety monitoring. The focus is on pragmatic issues that may help investigators planning a periconceptional trial.
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Affiliation(s)
- Bernard J Brabin
- Clinical Division, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, L35QA, UK.
- Global Child Health Group, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
| | - Sabine Gies
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
| | - Stephen Owens
- Northumbria Healthcare NHS Foundation Trust, North Shields, NE29 8NH, UK.
| | - Yves Claeys
- Clinical Sciences Department, Institute of Tropical Medicine, Antwerp, Belgium.
| | - Umberto D'Alessandro
- Medical Research Council Unit (MRC), Fajara, The Gambia.
- London School of Hygiene and Tropical Medicine, London, UK.
- Institute of Tropical Medicine, Antwerp, Belgium.
| | - Halidou Tinto
- Clinical Research Unit of Nanoro (URCN/IRSS), Nanoro, Burkina Faso.
| | - Loretta Brabin
- Institute of Cancer Sciences, University of Manchester, Manchester, UK.
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Chandyo RK, Ulak M, Adhikari RK, Sommerfelt H, Strand TA. Prevalence of Iron Deficiency and Anemia among Young Children with Acute Diarrhea in Bhaktapur, Nepal. Healthcare (Basel) 2015; 3:593-606. [PMID: 27417782 PMCID: PMC4939584 DOI: 10.3390/healthcare3030593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 06/26/2015] [Accepted: 07/14/2015] [Indexed: 11/21/2022] Open
Abstract
Iron deficiency anemia is still common in children under five years of age and may impair their growth and cognitive development. Diarrhea is the second most common reason for seeking medical care for young children in Nepal. However, neither screening programs nor effective preventive measures for anemia and iron deficiencies are in place among children with diarrhea in many developing countries. The aims of this study were to determine the prevalence of anemia and iron deficiency and explore their associations with clinical, socioeconomic, and anthropometric parameters in Nepalese children. This was a cross-sectional study based on 1232 children, six to 35 months old, with acute diarrhea participating in a zinc supplementation trial. The mean (SD) hemoglobin was 11.2 g/dL (1.2). Anemia was found in 493 children (40%); this estimate increased to 641 (52%) when we adjusted for the altitude of the study area (hemoglobin <11.3 g/dL). One in every three children had depleted iron stores and 198 (16%) of the children had both depleted iron stores and anemia, indicating iron deficiency anemia. The prevalence of anemia among children presenting with acute diarrhea was high but the degree of severity was mainly mild or moderate. Iron deficiency explained less than half of the total anemia, indicating other nutritional deficiencies inducing anemia might be common in this population.
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Affiliation(s)
- Ram K Chandyo
- Centre for International Health, University of Bergen, Overlege Danielsens Hus, 5 et. Årstadveien 21, N-5009 Bergen, Norway.
- Community Medicine Department, Kathmandu Medical College, Kathmandu University, Kathmandu P.O. Box 21266, Nepal.
| | - Manjeswori Ulak
- Department of Child Health, Institute of Medicine, Kathmandu P.O. Box 1524, Nepal.
| | - Ramesh K Adhikari
- Department of Pediatrics, Kathmandu Medical College, Kathmandu University, Kathmandu P.O. Box 21266, Nepal.
| | - Halvor Sommerfelt
- Centre for International Health, University of Bergen, Overlege Danielsens Hus, 5 et. Årstadveien 21, N-5009 Bergen, Norway.
| | - Tor A Strand
- Centre for International Health, University of Bergen, Overlege Danielsens Hus, 5 et. Årstadveien 21, N-5009 Bergen, Norway.
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Gunaratna NS, Masanja H, Mrema S, Levira F, Spiegelman D, Hertzmark E, Saronga N, Irema K, Shuma M, Elisaria E, Fawzi W. Multivitamin and iron supplementation to prevent periconceptional anemia in rural tanzanian women: a randomized, controlled trial. PLoS One 2015; 10:e0121552. [PMID: 25905863 PMCID: PMC4408096 DOI: 10.1371/journal.pone.0121552] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 02/12/2015] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Women's nutritional status during conception and early pregnancy can influence maternal and infant outcomes. This study examined the efficacy of pre-pregnancy supplementation with iron and multivitamins to reduce the prevalence of anemia during the periconceptional period among rural Tanzanian women and adolescent girls. DESIGN A double-blind, randomized controlled trial was conducted in which participants were individually randomized to receive daily oral supplements of folic acid alone, folic acid and iron, or folic acid, iron, and vitamins A, B-complex, C, and E at approximately single recommended dietary allowance (RDA) doses for six months. SETTING Rural Rufiji District, Tanzania. SUBJECTS Non-pregnant women and adolescent girls aged 15-29 years (n = 802). RESULTS The study arms were comparable in demographic and socioeconomic characteristics, food security, nutritional status, pregnancy history, and compliance with the regimen (p>0.05). In total, 561 participants (70%) completed the study and were included in the intention-to-treat analysis. Hemoglobin levels were not different across treatments (median: 11.1 g/dL, Q1-Q3: 10.0-12.4 g/dL, p = 0.65). However, compared with the folic acid arm (28%), there was a significant reduction in the risk of hypochromic microcytic anemia in the folic acid and iron arm (17%, RR: 0.61, 95% CI: 0.42-0.90, p = 0.01) and the folic acid, iron, and multivitamin arm (19%, RR: 0.66, 95% CI: 0.45-0.96, p = 0.03). Inverse probability of treatment weighting (IPTW) to adjust for potential selection bias due to loss to follow-up did not materially change these results. The effect of the regimens was not modified by frequency of household meat consumption, baseline underweight status, parity, breastfeeding status, or level of compliance (in all cases, p for interaction>0.2). CONCLUSIONS Daily oral supplementation with iron and folic acid among women and adolescents prior to pregnancy reduces risk of anemia. The potential benefits of supplementation on the risk of periconceptional anemia and adverse pregnancy outcomes warrant investigation in larger studies. TRIAL REGISTRATION ClinicalTrials.gov NCT01183572.
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Affiliation(s)
- Nilupa S. Gunaratna
- Department of Global Health and Population, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | | | | | | | - Donna Spiegelman
- Departments of Epidemiology, Biostatistics, and Nutrition, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Ellen Hertzmark
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Naomi Saronga
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Kahema Irema
- Ifakara Health Institute, Dar es Salaam, Tanzania
| | - Mary Shuma
- Ifakara Health Institute, Dar es Salaam, Tanzania
| | | | - Wafaie Fawzi
- Departments of Global Health and Population, Epidemiology, and Nutrition, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, United States of America
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Darnton-Hill I, Mkparu UC. Micronutrients in pregnancy in low- and middle-income countries. Nutrients 2015; 7:1744-68. [PMID: 25763532 PMCID: PMC4377879 DOI: 10.3390/nu7031744] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 02/09/2015] [Accepted: 02/26/2015] [Indexed: 11/21/2022] Open
Abstract
Pregnancy is one of the more important periods in life when increased micronutrients, and macronutrients are most needed by the body; both for the health and well-being of the mother and for the growing foetus and newborn child. This brief review aims to identify the micronutrients (vitamins and minerals) likely to be deficient in women of reproductive age in Low- and Middle-Income Countries (LMIC), especially during pregnancy, and the impact of such deficiencies. A global prevalence of some two billion people at risk of micronutrient deficiencies, and multiple micronutrient deficiencies of many pregnant women in LMIC underline the urgency to establishing the optimal recommendations, including for delivery. It has long been recognized that adequate iron is important for best reproductive outcomes, including gestational cognitive development. Similarly, iodine and calcium have been recognized for their roles in development of the foetus/neonate. Less clear effects of deficiencies of zinc, copper, magnesium and selenium have been reported. Folate sufficiency periconceptionally is recognized both by the practice of providing folic acid in antenatal iron/folic acid supplementation and by increasing numbers of countries fortifying flours with folic acid. Other vitamins likely to be important include vitamins B12, D and A with the water-soluble vitamins generally less likely to be a problem. Epigenetic influences and the likely influence of micronutrient deficiencies on foetal origins of adult chronic diseases are currently being clarified. Micronutrients may have other more subtle, unrecognized effects. The necessity for improved diets and health and sanitation are consistently recommended, although these are not always available to many of the world's pregnant women. Consequently, supplementation programmes, fortification of staples and condiments, and nutrition and health support need to be scaled-up, supported by social and cultural measures. Because of the life-long influences on reproductive outcomes, including inter-generational ones, both clinical and public health measures need to ensure adequate micronutrient intakes during pregnancy, but also during adolescence, the first few years of life, and during lactation. Many antenatal programmes are not currently achieving this. We aim to address the need for micronutrients during pregnancy, the importance of micronutrient deficiencies during gestation and before, and propose the scaling-up of clinical and public health approaches that achieve healthier pregnancies and improved pregnancy outcomes.
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Affiliation(s)
- Ian Darnton-Hill
- The Boden Institute of Obesity, Nutrition, Exercise & Eating Disorders, University of Sydney, NSW 2006, Australia.
- The Friedman School of Nutrition Science and Policy, Tufts University, Medford, MA 021111, USA.
| | - Uzonna C Mkparu
- Columbia University Medical Center, Institute of Human Nutrition, New York, NY 10027, USA.
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Grieger JA, Clifton VL. A review of the impact of dietary intakes in human pregnancy on infant birthweight. Nutrients 2014; 7:153-78. [PMID: 25551251 PMCID: PMC4303831 DOI: 10.3390/nu7010153] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/16/2014] [Indexed: 01/04/2023] Open
Abstract
Studies assessing maternal dietary intakes and the relationship with birthweight are inconsistent, thus attempting to draw inferences on the role of maternal nutrition in determining the fetal growth trajectory is difficult. The aim of this review is to provide updated evidence from epidemiological and randomized controlled trials on the impact of dietary and supplemental intakes of omega-3 long-chain polyunsaturated fatty acids, zinc, folate, iron, calcium, and vitamin D, as well as dietary patterns, on infant birthweight. A comprehensive review of the literature was undertaken via the electronic databases Pubmed, Cochrane Library, and Medline. Included articles were those published in English, in scholarly journals, and which provided information about diet and nutrition during pregnancy and infant birthweight. There is insufficient evidence for omega-3 fatty acid supplements’ ability to reduce risk of low birthweight (LBW), and more robust evidence from studies supplementing with zinc, calcium, and/or vitamin D needs to be established. Iron supplementation appears to increase birthweight, particularly when there are increases in maternal hemoglobin concentrations in the third trimester. There is limited evidence supporting the use of folic acid supplements to reduce the risk for LBW; however, supplementation may increase birthweight by ~130 g. Consumption of whole foods such as fruit, vegetables, low-fat dairy, and lean meats throughout pregnancy appears beneficial for appropriate birthweight. Intervention studies with an understanding of optimal dietary patterns may provide promising results for both maternal and perinatal health. Outcomes from these studies will help determine what sort of dietary advice could be promoted to women during pregnancy in order to promote the best health for themselves and their baby.
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Affiliation(s)
- Jessica A Grieger
- Robinson Research Institute, School of Paediatrics and Reproductive Health, Adelaide University, Lyell McEwin Hospital, Haydown Road, Elizabeth Vale, SA 5112, Australia.
| | - Vicki L Clifton
- Robinson Research Institute, School of Paediatrics and Reproductive Health, Adelaide University, Lyell McEwin Hospital, Haydown Road, Elizabeth Vale, SA 5112, Australia.
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Burke RM, Leon JS, Suchdev PS. Identification, prevention and treatment of iron deficiency during the first 1000 days. Nutrients 2014; 6:4093-114. [PMID: 25310252 PMCID: PMC4210909 DOI: 10.3390/nu6104093] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 09/09/2014] [Accepted: 09/16/2014] [Indexed: 12/20/2022] Open
Abstract
Iron deficiency is a global problem across the life course, but infants and their mothers are especially vulnerable to both the development and the consequences of iron deficiency. Maternal iron deficiency during pregnancy can predispose offspring to the development of iron deficiency during infancy, with potentially lifelong sequelae. This review explores iron status throughout these "first 1000 days" from pregnancy through two years of age, covering the role of iron and the epidemiology of iron deficiency, as well as its consequences, identification, interventions and remaining research gaps.
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Affiliation(s)
- Rachel M Burke
- Department of Epidemiology, Rollins School of Public Health, Emory University, 1518 Clifton Rd. NE, Atlanta, GA 30322, USA.
| | - Juan S Leon
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Rd. NE, Atlanta, GA 30322, USA.
| | - Parminder S Suchdev
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Rd. NE, Atlanta, GA 30322, USA.
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Htet MK, Fahmida U, Dillon D, Akib A, Utomo B, Thurnham DI. The influence of vitamin A status on iron-deficiency anaemia in anaemic adolescent schoolgirls in Myanmar. Public Health Nutr 2014; 17:2325-32. [PMID: 24128336 PMCID: PMC10282611 DOI: 10.1017/s1368980013002723] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 08/22/2013] [Accepted: 09/02/2013] [Indexed: 11/05/2022]
Abstract
OBJECTIVE The present study was conducted to investigate reasons for the high prevalence of anaemia among adolescent schoolgirls and to elucidate the role of vitamin A in contributing to Fe-deficiency anaemia (IDA). DESIGN Among 1269 schoolgirls who were previously screened for anaemia (Hb < 120 g/l), 391 anaemic girls were further assessed for Fe, vitamin A and subclinical inflammation status. Fe and vitamin A indicators were corrected for inflammation and were compared in the Fe-deficient and non-deficient groups as well as between those with and without inflammation. Logistic regression was done to determine whether vitamin A status and subclinical inflammation were risk factors for Fe deficiency. The differences in Fe status among tertiles of vitamin A concentrations were assessed using ANOVA. SETTING Myanmar. SUBJECTS Adolescent schoolgirls (n 391). RESULTS One-third of the anaemia (30·4%) was IDA. Prevalence of low vitamin A status (serum retinol <1·05 μmol/l) was 31·5%. Fe and vitamin A status were significantly different between the IDA and non-IDA groups and also based on their inflammation status. Logistic regression showed that low vitamin A status was a significant predictor for being Fe deficient (OR = 1·81; 95% CI 1·03, 3·19 and OR = 2·31; 1·31, 4·07 in the middle (1·056-1·298 μmol/l) and low (≤1·056 μmol/l) vitamin A tertiles, respectively). ANOVA showed that better Fe status was associated with a higher concentration of serum retinol but only in IDA. CONCLUSIONS Fe deficiency was not the main cause of anaemia in the present population. The role of vitamin A as well as other micronutrients should be taken into account in addressing the problem of anaemia.
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Affiliation(s)
- Min Kyaw Htet
- South East Asian Ministers of Education Organization, Regional Center for Food and Nutrition, University of Indonesia, Salemba Raya 6, Jakarta 10430, Indonesia
- Department of Health, Ministry of Health, Nay Pyi Taw, Myanmar
| | - Umi Fahmida
- South East Asian Ministers of Education Organization, Regional Center for Food and Nutrition, University of Indonesia, Salemba Raya 6, Jakarta 10430, Indonesia
| | - Drupadi Dillon
- South East Asian Ministers of Education Organization, Regional Center for Food and Nutrition, University of Indonesia, Salemba Raya 6, Jakarta 10430, Indonesia
- Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Arwin Akib
- Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Budi Utomo
- Faculty of Public Health, University of Indonesia, Depok, Indonesia
| | - David I Thurnham
- Northern Ireland Centre for Food and Health, School of Biomedical Science, University of Ulster, Coleraine, UK
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Abstract
INTRODUCTION There is increasingly a double burden of under-nutrition and obesity in women of reproductive age. Preconception underweight or overweight, short stature and micronutrient deficiencies all contribute to excess maternal and fetal complications during pregnancy. METHODS A systematic review and meta-analysis of the evidence was conducted to ascertain the possible impact of preconception care for adolescents, women and couples of reproductive age on maternal, newborn and child health (MNCH) outcomes. A comprehensive strategy was used to search electronic reference libraries, and both observational and clinical controlled trials were included. Cross-referencing and a separate search strategy for each preconception risk and intervention ensured wider study capture. RESULTS Maternal pre-pregnancy weight is a significant factor in the preconception period with underweight contributing to a 32% higher risk of preterm birth, and obesity more than doubling the risk for preeclampsia, gestational diabetes. Overweight women are more likely to undergo a Cesarean delivery, and their newborns have higher chances of being born with a neural tube or congenital heart defect. Among nutrition-specific interventions, preconception folic acid supplementation has the strongest evidence of effect, preventing 69% of recurrent neural tube defects. Multiple micronutrient supplementation shows promise to reduce the rates of congenital anomalies and risk of preeclampsia. Although over 40% of women worldwide are anemic in the preconception period, only one study has shown a risk for low birth weight. CONCLUSION All women, but especially those who become pregnant in adolescence or have closely-spaced pregnancies (inter-pregnancy interval less than six months), require nutritional assessment and appropriate intervention in the preconception period with an emphasis on optimizing maternal body mass index and micronutrient reserves. Increasing coverage of nutrition-specific and nutrition-sensitive strategies (such as food fortification; integration of nutrition initiatives with other maternal and child health interventions; and community based platforms) is necessary among adolescent girls and women of reproductive age. The effectiveness of interventions will need to be simultaneously monitored, and form the basis for the development of improved delivery strategies and new nutritional interventions.
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Affiliation(s)
- Sohni V Dean
- Division of Women and Child Health, Aga Khan University Karachi, Pakistan
| | - Zohra S Lassi
- Division of Women and Child Health, Aga Khan University Karachi, Pakistan
| | - Ayesha M Imam
- Division of Women and Child Health, Aga Khan University Karachi, Pakistan
| | - Zulfiqar A Bhutta
- Division of Women and Child Health, Aga Khan University Karachi, Pakistan
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Alizadeh L, Raoofi A, Salehi L, Ramzi M. Impact of maternal hemoglobin concentration on fetal outcomes in adolescent pregnant women. IRANIAN RED CRESCENT MEDICAL JOURNAL 2014; 16:e19670. [PMID: 25389491 PMCID: PMC4222017 DOI: 10.5812/ircmj.19670] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/05/2014] [Accepted: 07/09/2014] [Indexed: 11/23/2022]
Abstract
Background: Studies on the association between maternal hemoglobin (Hb) concentration and adverse pregnancy outcome have been inconsistent. Many studies have shown the impact of Hb concentration on pregnancy outcomes in adult women; however, it is not revealed in adolescent pregnant women. Objectives: The aim of this study was to examine the effect of Hb concentration on birth outcomes in pregnant adolescents as a high-risk group. Patients and Methods: In this cross-sectional study, 312 healthy and nonsmoker adolescent pregnant women with gestational age (GA) of 37-40 weeks were chosen by random sampling, and were followed until delivery. A complete history was obtained from women. In addition, clinical examination and Hb test were performed. After birth, the associations between Hb concentration during pregnancy and birth outcomes were investigated. Statistical analyses were performed using SPSS software by t-test, chi-square and ANOVA. Results: In total, about 23.2 % were anemic, 58% had normal level of Hb (11-13.2 g/dL) and 18.8% had Hb > 13.2 g/dL. The mean birth weight was 3197.8 ± 398.25 grams and it was more in mothers with Hb = 10.5-12.5 g/dL than others (Hb < 10.5 or Hb > 12.5 g/dL) (P < 0.001). The lowest mean birth weight was found in mothers with Hb < 10.5 (3033.33 ± 422). Moreover, the mean birth weight of male newborns was more than females (P = 0.001). Eight percent of neonates had Apgar score less than eight. Low Apgar score in anemic group and mothers with high Hb concentration (Hb > 12.5 g/dL) was more than others. Conclusions: Abnormal Hb concentrations increase the risk of adverse birth outcomes such as low birth weight (LBW) and low Apgar scores in pregnant adolescents, so intensive care is recommended for this group of pregnant women.
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Affiliation(s)
- Leila Alizadeh
- Department of Maternal and Child Health, Ardabil Branch, Islamic Azad University, Ardabil, IR Iran
| | - Azam Raoofi
- Department of Health Education and Promotion, School of Public Health, Alborz University of Medical Sciences, Karaj, IR Iran
- Corresponding Author: Azam Raoofi, Department of Health Education and Promotion, School of Health, Alborz University of Medical Sciences, Karaj, IR Iran. Tel/Fax: +98-2188352501, E-mail:
| | - Leili Salehi
- Department of Health Education and Promotion, School of Public Health, Alborz University of Medical Sciences, Karaj, IR Iran
| | - Mani Ramzi
- Hematology Reaserch Center, Departement of Hematology and Medical Oncology, Shiraz University of Medical Sciences, Shiraz, IR Iran
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Sinclair KD, Watkins AJ. Parental diet, pregnancy outcomes and offspring health: metabolic determinants in developing oocytes and embryos. Reprod Fertil Dev 2014; 26:99-114. [PMID: 24305182 DOI: 10.1071/rd13290] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The periconceptional period, embracing the terminal stages of oocyte growth and post-fertilisation development up to implantation, is sensitive to parental nutrition. Deficiencies or excesses in a range of macro- and micronutrients during this period can lead to impairments in fertility, fetal development and long-term offspring health. Obesity and genotype-related differences in regional adiposity are associated with impaired liver function and insulin resistance, and contribute to fatty acid-mediated impairments in sperm viability and oocyte and embryo quality, all of which are associated with endoplasmic reticulum stress and compromised fertility. Disturbances to maternal protein metabolism can elevate ammonium concentrations in reproductive tissues and disturb embryo and fetal development. Associated with this are disturbances to one-carbon metabolism, which can lead to epigenetic modifications to DNA and associated proteins in offspring that are both insulin resistant and hypertensive. Many enzymes involved in epigenetic gene regulation use metabolic cosubstrates (e.g. acetyl CoA and S-adenosyl methionine) to modify DNA and associated proteins, and so act as 'metabolic sensors' providing a link between parental nutritional status and gene regulation. Separate to their genomic contribution, spermatozoa can also influence embryo development via direct interactions with the egg and by seminal plasma components that act on oviductal and uterine tissues.
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Affiliation(s)
- Kevin D Sinclair
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire, LE12 5RD, UK
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Bhutta ZA, Das JK, Bahl R, Lawn JE, Salam RA, Paul VK, Sankar MJ, Blencowe H, Rizvi A, Chou VB, Walker N. Can available interventions end preventable deaths in mothers, newborn babies, and stillbirths, and at what cost? Lancet 2014; 384:347-70. [PMID: 24853604 DOI: 10.1016/s0140-6736(14)60792-3] [Citation(s) in RCA: 866] [Impact Index Per Article: 86.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Progress in newborn survival has been slow, and even more so for reductions in stillbirths. To meet Every Newborn targets of ten or fewer neonatal deaths and ten or fewer stillbirths per 1000 births in every country by 2035 will necessitate accelerated scale-up of the most effective care targeting major causes of newborn deaths. We have systematically reviewed interventions across the continuum of care and various delivery platforms, and then modelled the effect and cost of scale-up in the 75 high-burden Countdown countries. Closure of the quality gap through the provision of effective care for all women and newborn babies delivering in facilities could prevent an estimated 113,000 maternal deaths, 531,000 stillbirths, and 1·325 million neonatal deaths annually by 2020 at an estimated running cost of US$4·5 billion per year (US$0·9 per person). Increased coverage and quality of preconception, antenatal, intrapartum, and postnatal interventions by 2025 could avert 71% of neonatal deaths (1·9 million [range 1·6-2·1 million]), 33% of stillbirths (0·82 million [0·60-0·93 million]), and 54% of maternal deaths (0·16 million [0·14-0·17 million]) per year. These reductions can be achieved at an annual incremental running cost of US$5·65 billion (US$1·15 per person), which amounts to US$1928 for each life saved, including stillbirths, neonatal, and maternal deaths. Most (82%) of this effect is attributable to facility-based care which, although more expensive than community-based strategies, improves the likelihood of survival. Most of the running costs are also for facility-based care (US$3·66 billion or 64%), even without the cost of new hospitals and country-specific capital inputs being factored in. The maximum effect on neonatal deaths is through interventions delivered during labour and birth, including for obstetric complications (41%), followed by care of small and ill newborn babies (30%). To meet the unmet need for family planning with modern contraceptives would be synergistic, and would contribute to around a halving of births and therefore deaths. Our analysis also indicates that available interventions can reduce the three most common cause of neonatal mortality--preterm, intrapartum, and infection-related deaths--by 58%, 79%, and 84%, respectively.
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Affiliation(s)
- Zulfiqar A Bhutta
- Center for Global Child Health, Hospital for Sick Children, Toronto, Canada; Center of Excellence in Women and Child Health, Aga Khan University, Karachi, Pakistan.
| | - Jai K Das
- Center of Excellence in Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Rajiv Bahl
- World Health Organization, Geneva, Switzerland
| | - Joy E Lawn
- Maternal, Adolescent Reproductive and Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK; Saving Newborn Lives, Save the Children, Washington, DC, USA; Research and Evidence Division, UK AID, London, UK
| | - Rehana A Salam
- Center of Excellence in Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Vinod K Paul
- All India Institute of Medical Sciences, New Delhi, India
| | | | - Hannah Blencowe
- Maternal, Adolescent Reproductive and Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK
| | - Arjumand Rizvi
- Center of Excellence in Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Victoria B Chou
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Neff Walker
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
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Bhutta ZA, Das JK, Rizvi A, Gaffey MF, Walker N, Horton S, Webb P, Lartey A, Black RE. Evidence-based interventions for improvement of maternal and child nutrition: what can be done and at what cost? Lancet 2013; 382:452-477. [PMID: 23746776 DOI: 10.1016/s0140-6736(13)60996-4] [Citation(s) in RCA: 1538] [Impact Index Per Article: 139.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Maternal undernutrition contributes to 800,000 neonatal deaths annually through small for gestational age births; stunting, wasting, and micronutrient deficiencies are estimated to underlie nearly 3·1 million child deaths annually. Progress has been made with many interventions implemented at scale and the evidence for effectiveness of nutrition interventions and delivery strategies has grown since The Lancet Series on Maternal and Child Undernutrition in 2008. We did a comprehensive update of interventions to address undernutrition and micronutrient deficiencies in women and children and used standard methods to assess emerging new evidence for delivery platforms. We modelled the effect on lives saved and cost of these interventions in the 34 countries that have 90% of the world's children with stunted growth. We also examined the effect of various delivery platforms and delivery options using community health workers to engage poor populations and promote behaviour change, access and uptake of interventions. Our analysis suggests the current total of deaths in children younger than 5 years can be reduced by 15% if populations can access ten evidence-based nutrition interventions at 90% coverage. Additionally, access to and uptake of iodised salt can alleviate iodine deficiency and improve health outcomes. Accelerated gains are possible and about a fifth of the existing burden of stunting can be averted using these approaches, if access is improved in this way. The estimated total additional annual cost involved for scaling up access to these ten direct nutrition interventions in the 34 focus countries is Int$9·6 billion per year. Continued investments in nutrition-specific interventions to avert maternal and child undernutrition and micronutrient deficiencies through community engagement and delivery strategies that can reach poor segments of the population at greatest risk can make a great difference. If this improved access is linked to nutrition-sensitive approaches--ie, women's empowerment, agriculture, food systems, education, employment, social protection, and safety nets--they can greatly accelerate progress in countries with the highest burden of maternal and child undernutrition and mortality.
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Affiliation(s)
| | - Jai K Das
- Aga Khan University, Karachi, Pakistan
| | | | | | - Neff Walker
- Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD, USA
| | | | | | | | - Robert E Black
- Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD, USA
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Hemoglobin concentration and pregnancy outcomes: a systematic review and meta-analysis. BIOMED RESEARCH INTERNATIONAL 2013; 2013:769057. [PMID: 23984406 PMCID: PMC3741929 DOI: 10.1155/2013/769057] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 07/05/2013] [Indexed: 12/11/2022]
Abstract
Objective. To conduct a systematic review and meta-analysis of hemoglobin effect on the pregnancy outcomes. Methods. We searched MEDLINE and SCOPUS from January 1, 1990 to April 10, 2011. Observational studies addressing association between hemoglobin and adverse pregnancy outcomes were selected. Two reviewers independently extracted data. A mixed logistic regression was applied to assess the effects of hemoglobin on preterm birth, low birth weight, and small for gestational age. Results. Seventeen studies were included in poolings. Hemoglobin below 11 g/dL was, respectively, 1.10 (95% CI: 1.02–1.19), 1.17 (95% CI: 1.03–1.32), and 1.14 (95% CI: 1.05–1.24) times higher risk of preterm birth, low birth weight, and small for gestational age than normal hemoglobin in the first trimester. In the third trimester, hemoglobin below 11 g/dL was 1.30 (95% CI: 1.08–1.58) times higher risk of low birth weight. Hemoglobin above 14 g/dL in third trimester decreased the risk of preterm term with ORs of 0.50 (95% CI: 0.26–0.97), but it might be affected by publication bias. Conclusions. Our review suggests that hemoglobin below 11 g/dl increases the risk of preterm birth, low birth weight, and small gestational age in the first trimester and the risk of low birth weight in the third trimester.
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Racial variations in booking haemoglobin of primigravidae in Malaysia: a prospective study. BMC Res Notes 2013; 6:173. [PMID: 23634656 PMCID: PMC3655104 DOI: 10.1186/1756-0500-6-173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 10/23/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Variations in racial haemoglobin had been previously described in multiple studies locally and abroad. This study was conducted to quantify the differences in haemoglobin of booking primigravidae amongst the three major races in Malaysia at the antenatal clinic of University Malaya Medical Centre, Kuala Lumpur. FINDINGS One year prospective study of booking full blood count sample of primigravidae taken in one centre was conducted. Multiple comparative analyses of the booking haemoglobin were performed using the One-way ANOVA comparative mean test in each trimester. 622 primigravidae without any known history of haematological disorders were recruited into the study. The mean haemoglobin for the Indian race was the lowest compared to the two other races in the second and the third trimesters, and it was found to be statistically significant lower (p- value 0.001) than the Malay race in the second trimester. It was also found that the Indian race had a significantly higher incidence of moderate to severe anaemia (p- value: 0.029). The prevalence of anaemia in our study population is also significantly higher in the Indian population (p- value: 0.01). CONCLUSIONS The findings from this study have established that there is racial preponderance to anaemia in pregnancy. The Indian race is at a higher risk of having anaemia in pregnancy particularly in the second trimester.
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Vucic V, Berti C, Vollhardt C, Fekete K, Cetin I, Koletzko B, Gurinovic M, van't Veer P. Effect of iron intervention on growth during gestation, infancy, childhood, and adolescence: a systematic review with meta-analysis. Nutr Rev 2013; 71:386-401. [DOI: 10.1111/nure.12037] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Vesna Vucic
- Centre of Research Excellence in Nutrition and Metabolism; Institute for Medical Research; University of Belgrade; Belgrade; Serbia
| | - Cristiana Berti
- Unit of Obstetrics and Gynecology and Center for Fetal Research Giorgio Pardi; University of Milan; Milan; Italy
| | - Christiane Vollhardt
- Division of Metabolic and Nutritional Medicine; Dr. von Hauner Children's Hospital; Ludwig-Maximilians-University of Munich Medical Centre; Munich; Germany
| | - Katalin Fekete
- Nutritional Research Unit; Department of Pediatrics; University of Pécs; Pécs; Hungary
| | - Irene Cetin
- Unit of Obstetrics and Gynecology and Center for Fetal Research Giorgio Pardi; University of Milan; Milan; Italy
| | - Berthold Koletzko
- Division of Metabolic and Nutritional Medicine; Dr. von Hauner Children's Hospital; Ludwig-Maximilians-University of Munich Medical Centre; Munich; Germany
| | - Mirjana Gurinovic
- Centre of Research Excellence in Nutrition and Metabolism; Institute for Medical Research; University of Belgrade; Belgrade; Serbia
| | - Pieter van't Veer
- Division of Human Nutrition; Wageningen University and Research Centre; Wageningen; The Netherlands
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Yi SW, Han YJ, Ohrr H. Anemia before pregnancy and risk of preterm birth, low birth weight and small-for-gestational-age birth in Korean women. Eur J Clin Nutr 2013; 67:337-42. [PMID: 23403878 DOI: 10.1038/ejcn.2013.12] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Maternal prepregnancy hemoglobin concentration has rarely been explored as a risk of poor birth outcomes. This study examined whether women with anemia before pregnancy would be at higher risk of preterm birth, low birth weight (LBW) and small-for-gestational-age (SGA) birth. SUBJECTS/METHODS This retrospective cohort study was conducted on 70,895 Korean women who delivered a singleton in 1999, with their prepregnancy hemoglobin concentration measured at health examinations in 1997-1999. A logistic model was used to adjust for confounding variables and calculate odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS In adjusted analysis, moderate-to-severe anemia (hemoglobin <100 g/l) before pregnancy was associated with preterm birth (OR, 1.53; 95% CI, 1.05-2.23; P=0.027), LBW (OR, 1.81; 95% CI, 1.24-2.64; P=0.002) and SGA (OR, 1.71; 95% CI, 1.35-2.17; P<0.001) when compared with prepregnancy hemoglobin of 120-149 g/l. Mild anemia (hemoglobin of 100-119 g/l) was also associated with LBW (OR, 1.21; 95% CI, 1.06-1.39; P=0.005) and SGA (OR, 1.15; 95% CI, 1.06-1.25; P=0.001). The risk of preterm birth, LBW and SGA across 11 prepregnancy hemoglobin groups depended on the severity of anemia (P for trend=0.042, 0.019, and 0.001, respectively). A high hemoglobin concentration (≥150 g/l), however, was not associated with adverse birth outcomes. CONCLUSIONS Anemia, not high hemoglobin concentration, before pregnancy was associated with an elevated risk of preterm birth, LBW and SGA, and the risk increased with the severity of anemia in Korean women.
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Affiliation(s)
- S-W Yi
- Department of Preventive Medicine and Public Health, Kwandong University College of Medicine, Gangneung, Republic of Korea
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Capra L, Tezza G, Mazzei F, Boner AL. The origins of health and disease: the influence of maternal diseases and lifestyle during gestation. Ital J Pediatr 2013; 39:7. [PMID: 23343462 PMCID: PMC3599191 DOI: 10.1186/1824-7288-39-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 01/11/2013] [Indexed: 11/10/2022] Open
Abstract
According to the Barker hypothesis, the period of pregnancy and the intrauterine environment are crucial to the tendency to develop diseases like hypertension, diabetes, coronary heart disease, metabolic disorders, pulmonary, renal and mental illnesses. The external environment affects the development of a particular phenotype suitable for an environment with characteristics that closely resemble intrauterine conditions. If the extra-uterine environment differs greatly from the intra-uterine one, the fetus is more prone to develop disease. Subsequent studies have shown that maternal diseases like depression and anxiety, epilepsy, asthma, anemia and metabolic disorders, like diabetes, are able to determine alterations in growth and fetal development. Similarly, the maternal lifestyle, particularly diet, exercise and smoking during pregnancy, have an important role in determining the risk to develop diseases that manifest themselves both during childhood and particularly in adulthood. Finally, there are abundant potential sources of pollutants, both indoor and outdoor, in the environment in which the child lives, which can contribute to an increased probability to the development of several diseases and that in some cases could be easily avoided.
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Affiliation(s)
- Lucetta Capra
- Department of Reproduction and Growth, Section of Pediatrics, Azienda Ospedaliera Universitaria Sant’Anna Ferrara, Ferrara, Italy
| | - Giovanna Tezza
- Department of Life Sciences and Reproduction, Section of Pediatrics, University of Verona, Policlinico G.B. Rossi, Verona, Italy
| | - Federica Mazzei
- Department of Life Sciences and Reproduction, Section of Pediatrics, University of Verona, Policlinico G.B. Rossi, Verona, Italy
| | - Attilio L Boner
- Department of Life Sciences and Reproduction, Section of Pediatrics, University of Verona, Policlinico G.B. Rossi, Verona, Italy
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