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Neural tube defect and folic acid

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https://www.readbyqxmd.com/read/28631291/folate-deficiency-disturbs-hsa-let-7-g-level-through-methylation-regulation-in-neural-tube-defects
#1
Li Wang, Shaofang Shangguan, Yu Xin, Shaoyan Chang, Zhen Wang, Xiaolin Lu, Lihua Wu, Bo Niu, Ting Zhang
Folic acid deficiency during pregnancy is believed to be a high-risk factor for neural tube defects (NTDs). Disturbed epigenetic modifications, including miRNA regulation, have been linked to the pathogenesis of NTDs in those with folate deficiency. However, the mechanism by which folic acid-regulated miRNA influences this pathogenesis remains unclear. It is believed that DNA methylation is associated with dysregulated miRNA expression. To clarify this issue, here we measured the methylation changes of 22 miRNAs in 57 human NTD cases to explore whether such changes are involved in miRNA regulation in NTD cases through folate metabolism...
June 19, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28628360/genetic-risk-factors-for-folate-responsive-neural-tube-defects
#2
Anne M Molloy, Faith Pangilinan, Lawrence C Brody
Neural tube defects (NTDs) are the most severe congenital malformations of the central nervous system. The etiology is complex, with both genetic and environmental factors having important contributions. Researchers have known for the past two decades that maternal periconceptional use of the B vitamin folic acid can prevent many NTDs. Though this finding is arguably one of the most important recent discoveries in birth defect research, the mechanism by which folic acid exerts this benefit remains unknown. Research to date has focused on the hypothesis that an underlying genetic susceptibility interacts with folate-sensitive metabolic processes at the time of neural tube closure...
June 19, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28617257/do-italian-pregnant-women-use-periconceptional-folate-supplementation
#3
Alice Maraschini, Paola D'Aloja, Ilaria Lega, Marta Buoncristiano, Ursula Kirchmayer, Martina Ventura, Serena Donati
INTRODUCTION: Deficiency of folic acid (FA) has been identified as a risk factor for neural tube defects (NTDs) as well as other congenital anomalies. Thus, periconceptional folate supplementation is recommended for all women planning to get pregnant. METHODS: We conducted a KAP (knowledge, attitude, practice) survey to investigate the use of FA and its appropriateness. The survey included a sample of 562 women who delivered in the Lazio region between 2013 and 2014...
April 2017: Annali Dell'Istituto Superiore di Sanità
https://www.readbyqxmd.com/read/28615372/preconception-micronutrient-supplementation-with-iron-and-folic-acid-compared-with-folic-acid-alone-affects-linear-growth-and-fine-motor-development-at-2-years-of-age-a-randomized-controlled-trial-in-vietnam
#4
Phuong H Nguyen, Ines Gonzalez-Casanova, Melissa F Young, Truong Viet Truong, Hue Hoang, Huong Nguyen, Son Nguyen, Ann M DiGirolamo, Reynaldo Martorell, Usha Ramakrishnan
Background: Maternal health and nutrition play a crucial role in early child growth and development. However, little is known about the benefits of preconception micronutrient interventions beyond the role of folic acid (FA) and neural tube defects.Objective: We evaluated the impact of weekly preconception multiple micronutrient (MM) or iron and folic acid (IFA) supplementation on child growth and development through the age of 2 y compared with FA alone.Methods: We followed 1599 offspring born to women who participated in a randomized controlled trial of preconception supplementation in Vietnam...
June 14, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28603928/the-nutritional-role-of-folate
#5
REVIEW
Shuhei Ebara
Folate functions as a coenzyme to transfer one-carbon units that are necessary for deoxythymidylate synthesis, purine synthesis, and various methylation reactions. Ingested folate becomes a functional molecule through intestinal absorption, circulation, transport to cells, and various modifications to its structure. Associations between nutritional folate status and chronic diseases such as cardiovascular disease, cancer, and cognitive dysfunction have been reported. It has also been reported that maternal folate nutritional status is related to the risk of neural tube defects (NTDs) in the offspring...
June 11, 2017: Congenital Anomalies
https://www.readbyqxmd.com/read/28596566/high-dose-maternal-folic-acid-supplementation-before-conception-impairs-reversal-learning-in-offspring-mice
#6
Kristin S Henzel, Devon P Ryan, Susanne Schröder, Marco Weiergräber, Dan Ehninger
Maternal folic acid (FA) supplementation prior to and during gestation is recommended for the prevention of neural tube closure defects in the developing embryo. Prior studies, however, suggested that excessive FA supplementation during gestation can be associated with toxic effects on the developing organism. Here, we address whether maternal dietary folic acid supplementation at 40 mg/kg chow (FD), restricted to a period prior to conception, affects neurobehavioural development in the offspring generation...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28588742/folate-deficiency-as-predisposing-factor-for-childhood-leukaemia-a-review-of-the-literature
#7
REVIEW
Catia Daniela Cantarella, Denise Ragusa, Marco Giammanco, Sabrina Tosi
BACKGROUND: Folic acid and its derivates, known as folates, are chemoprotective micronutrients of great interest because of their essential role in the maintenance of health and genomic integrity. The supplementation of folic acid during pregnancy has long been known to reduce the risk of neural tube defects (NTDs) in the foetus. Folate metabolism can be altered by many factors, including adequate intake through diet. Folate deficiency can compromise the synthesis, repair and methylation of DNA, with deleterious consequences on genomic stability and gene expression...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28584581/preconceptional-use-of-folic-acid-and-knowledge-about-folic-acid-among-low-income-pregnant-women-in-korea
#8
Jihyun Kim, Miyong Yon, Cho-Il Kim, Yoonna Lee, Gui-Im Moon, Jinhwan Hong, Taisun Hyun
BACKGROUND/OBJECTIVES: Folic acid supplementation before pregnancy is known to significantly reduce the risk of having a baby with neural tube defects (NTDs). Therefore, it is important for women to be aware of the effects of folic acid supplementation before pregnancy. The purpose of this study was to investigate the awareness and preconceptional use of folic acid and to assess the current knowledge about folic acid among low-income pregnant women in Korea. SUBJECTS/METHODS: A questionnaire survey was conducted in 2012...
June 2017: Nutrition Research and Practice
https://www.readbyqxmd.com/read/28569432/plasma-folate-levels-and-associated-factors-in-women-planning-to-become-pregnant-in-a-population-with-high-prevalence-of-neural-tube-defects
#9
Rui Ma, Linlin Wang, Lei Jin, Zhiwen Li, Aiguo Ren
BACKGROUND: Optimal blood folate levels of women before pregnancy are critical to the prevention of neural tube defects (NTDs). However, few studies have focused on blood folate levels of women planning to become pregnant. The aims of this study were to assess plasma folate levels in women who planned to become pregnant in a population with high prevalence of NTDs, to identify factors associated with plasma folate levels, and to evaluate the risk of NTDs at the population level. METHODS: A total of 2065 women were enrolled at the time of premarital health check-up in two rural counties in northern China from November 2009 to December 2012...
June 1, 2017: Birth defects research
https://www.readbyqxmd.com/read/28558107/folic-acid-for-the-prevention-of-neural-tube-defects
#10
Helga Refsum, A David Smith
No abstract text is available yet for this article.
May 30, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28558096/folic-acid-for-the-prevention-of-neural-tube-defects
#11
Renata Bortolus, Fabio Parazzini, Antonio Addis
No abstract text is available yet for this article.
May 30, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28545876/impact-of-periconceptional-folic-acid-supplementation-on-low-birth-weight-and-small-for-gestational-age-infants-in-china-a-large-prospective-cohort-study
#12
Nan Li, Zhiwen Li, Rongwei Ye, Jianmeng Liu, Aiguo Ren
OBJECTIVES: To explore the effects of maternal folic acid supplementation alone during pregnancy on the incidence of low birth weight (LBW) and small-for-gestational-age (SGA) infant status. STUDY DESIGN: Data were derived from a large population-based cohort study performed in China to evaluate the prevention of neural tube defects with folic acid supplementation. The sample comprised 200 589 singleton live births registered in 2 southern Chinese provinces by mothers for whom detailed information on folic acid use was available...
May 22, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28506268/ethnic-differences-in-folic-acid-supplement-use-in-a-population-based-cohort-of-pregnant-women-in-norway
#13
Tarja I Kinnunen, Line Sletner, Christine Sommer, Martine C Post, Anne Karen Jenum
BACKGROUND: Peri-conceptional use of folic acid supplements is recommended to prevent neural tube defects. Correct supplement use seems to be less common among ethnic minorities. We examined ethnic differences in folic acid supplement use before and during pregnancy and possible effect modification by education or planning of pregnancy. METHODS: The participants were 811 healthy pregnant women from a population-based cohort study in Oslo, Norway in 2008-2010. Ethnicity was categorized to five groups (European, Middle Eastern, South Asian, East Asian, African)...
May 15, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28490239/components-of-successful-staple-food-fortification-programs-lessons-from-latin-america
#14
Reynaldo Martorell, Daniel López de Romaña
BACKGROUND: There are few effectiveness evaluations of food fortification programs, and little is known about what makes programs successful. OBJECTIVE: We examined 3 food fortification programs in Latin America to identify common features that might explain their success and to draw lessons for program design and implementation everywhere: The vitamin A fortification of sugar in Guatemala with impact on vitamin A status of the population, the fortification of a basket of foods with iron and other micronutrients in Costa Rica with impact on iron status and anemia in women and children, and the fortification of wheat flour with folic acid in Chile, which reduced the incidence of neural tube defects...
January 1, 2017: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/28460896/folates-chemistry-analysis-occurrence-biofortification-and-bioavailability
#15
REVIEW
Ramesh Kumar Saini, Shivraj Hariram Nile, Young-Soo Keum
Folates (Vitamin B9) include both naturally occurring folates and synthetic folic acid used in fortified foods and dietary supplements. Folate deficiency causes severe abnormalities in one-carbon metabolism can result chronic diseases and developmental disorders, including neural tube defects. Mammalian cells cannot synthesize folates de novo; therefore, diet and dietary supplements are the only way to attain daily folate requirements. In the last decade, significant advancements have been made to enhance the folate content of rice, tomato, common bean and lettuce by using genetic engineering approaches...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28432198/folate-dependent-methylation-of-septins-governs-ciliogenesis-during-neural-tube-closure
#16
Manami Toriyama, Michinori Toriyama, John B Wallingford, Richard H Finnell
Periconception maternal folic acid (vitamin B9) supplementation can reduce the prevalence of neural tube defects (NTDs), although just how folates benefit the developing embryo and promote closing of the neural tube and other morphologic processes during development remains unknown. Folate contributes to a 1-carbon metabolism, which is essential for purine biosynthesis and methionine recycling and affects methylation of DNA, histones, and nonhistone proteins. Herein, we used animal models and cultured mammalian cells to demonstrate that disruption of the methylation pathway mediated by folate compromises normal neural tube closure (NTC) and ciliogenesis...
April 21, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28425110/neural-tube-defects-risk-factors-and-preventive-measures
#17
REVIEW
Atsuo Kondo, Takuya Matsuo, Nobuhito Morota, Atsuya S Kondo, Ikuyo Okai, Hiromi Fukuda
For the last 25 years, it has been proven that the occurrence or recurrence of neural tube defects can be prevented with the administration of folic acid before and early pregnancy. At present, over 80 countries in the world, except Japan, have mandated the fortification of wheat flour and/or rice with folic acid, which has resulted in a significant reduction in the prevalence of neural tube defects. In 2000, the Japanese government recommended folic acid 400 µg daily for young women of childbearing age and women who are planning to conceive...
April 19, 2017: Congenital Anomalies
https://www.readbyqxmd.com/read/28415531/new-synthesis-of-poly-ortho-methoxyaniline-nanostructures-and-its-application-to-construct-modified-multi-wall-carbon-nanotube-graphite-paste-electrode-for-simultaneous-determination-of-uric-acid-and-folic-acid
#18
Hossein Rajabi, Meissam Noroozifar
Uric acid (UA) and folic acid (FA) are compounds of biomedical interest. In humans, about 70% of daily uric acid disposal occurs via the kidneys, and in 5-25% of humans, impaired renal (kidney) excretion leads to hyperuricemia. Folate is another form folic acid of which is known as, is one of the B vitamins. It is used as a supplement by women to prevent neural tube defects developing during pregnancy. Polyortho-methoxyaniline nanostructures (POMANS) was synthesized with a new two phase (organic-water) synthesis method...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28407219/multiple-micronutrient-supplementation-for-women-during-pregnancy
#19
REVIEW
Batool A Haider, Zulfiqar A Bhutta
BACKGROUND: Multiple-micronutrient (MMN) deficiencies often coexist among women of reproductive age in low- to middle-income countries. They are exacerbated in pregnancy due to the increased demands, leading to potentially adverse effects on the mother and developing fetus. Though supplementation with MMNs has been recommended earlier because of the evidence of impact on pregnancy outcomes, a consensus is yet to be reached regarding the replacement of iron and folic acid supplementation with MMNs...
April 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28378377/survey-on-awareness-of-folic-acid-recognition-and-intake-by-female-students
#20
REVIEW
Takuya Matsuo, Yukiko Kagohashi, Yasuko Senga, Hiromi Fukuda, Keiko Shinozaki, Kumiko Takemori, Hiroki Otani, Atsuo Kondo
To reduce the risk of neural tube defects, studies have been conducted on female students of medical services, nutritional science, and nursery education that investigated the awareness of folic acid by using questionnaires. Many investigators have suggested the need to provide detailed information about the awareness of folic acid and knowledge about folic acid intake and neural tube defect risk reduction. The dietary habits of female students showed a positive correlation with their estimated folic acid intake, suggesting that improvements in dietary habits are associated with the consumption of folic acid...
April 5, 2017: Congenital Anomalies
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