نتایج جستجو برای: neural tube defects ntds

تعداد نتایج: 490075  

Journal: :Journal of tropical pediatrics 2013
Nem-Yun Boo Irene G S Cheah Meow-Keong Thong

UNLABELLED This study aimed to determine the prevalence and early outcome of neural tube defects (NTDs) in Malaysia. This prospective study included all neonates with NTDs (spina bifida, anencephaly, encephalocoele) born in 2009 in 32 Malaysian hospitals in the Malaysian National Neonatal Network. The prevalence of NTDs was 0.42 per 1000 live births, being highest among the indigenous people of...

2014
Jennifer N. Murdoch Christine Damrau Anju Paudyal Debora Bogani Sara Wells Nicholas D. E. Greene Philip Stanier Andrew J. Copp

Neural tube defects (NTDs) are among the commonest and most severe forms of developmental defect, characterized by disruption of the early embryonic events of central nervous system formation. NTDs have long been known to exhibit a strong genetic dependence, yet the identity of the genetic determinants remains largely undiscovered. Initiation of neural tube closure is disrupted in mice homozygo...

Journal: :Diabetes 2002
Lydie Pani Melissa Horal Mary R Loeken

Previously, we demonstrated that neural tube defects (NTDs) are significantly increased in a mouse model of diabetic pregnancy. In addition, expression of Pax-3, a gene encoding a transcription factor required for neural tube development, is significantly decreased. This suggests that diabetic embryopathy results from impaired expression of genes regulating essential morphogenetic processes. He...

2013
Lisette Stolk Marieke I. Bouwland-Both Nina H. van Mill Michael M. P. J. Verbiest Paul H. C. Eilers Huiping Zhu Lucina Suarez André G. Uitterlinden Régine P. M. Steegers-Theunissen

Folate deficiency is implicated in the causation of neural tube defects (NTDs). The preventive effect of periconceptional folic acid supplement use is partially explained by the treatment of a deranged folate-dependent one carbon metabolism, which provides methyl groups for DNA-methylation as an epigenetic mechanism. Here, we hypothesize that variations in DNA-methylation of genes implicated in...

Journal: :acta medica iranica 0
zahra rezaei department of obstetrics & gynecology, women hospital, tehran university of medical sciences, tehran, iran. farahnaz sadat ahmadi department of obstetrics & gynecology, women hospital, tehran university of medical sciences, tehran, iran. shirin niroomanesh department of obstetrics & gynecology, women hospital, tehran university of medical sciences, tehran, iran. shahram ejtemaee mehr department of pharmacology, school of medicine, tehran university of medical sciences, tehran, iran. fatemeh davari tanha department of obstetrics & gynecology, women hospital, tehran university of medical sciences, tehran, iran. atefeh aminian department of pharmacology, school of medicine, tehran university of medical sciences, tehran, iran.

the cause of neural tube defects (ntds) is multifactorial and in this case folic acid has an important role. since the neural tube is closed during 21-28 days of pregnancy, most of women are not informed about their pregnancy at this time, and as a result the golden time of folic acid consumption is missed. the aim of this study was evaluating the performance of pregnant women attending to tehr...

Journal: :International journal of environmental health research 2010
Yilan Liao Jinfeng Wang Jilei Wu Luke Driskell Wuyi Wang Ting Zhang Gu Xue Xiaoying Zheng

Shanxi province in northern China has one of the highest reported prevalence rates of neural tube defects (NTDs) in the world. The current study selected Heshun, the county with the highest rate of NTDs in Shanxi, as a study area and tested whether residence in a coal mining area was a contributing factor. A NTD cluster was detected in an area within 6 km of the coal mines for almost every year...

Journal: :International journal of clinical and experimental medicine 2014
Yang Yu Fang Wang Yihua Bao Xiaolin Lu Li Quan Ping Lu

OBJECTIVE This study aims to investigate the single nucleotide polymorphisms (SNPs) of 5,10-methylenetetrahydrofolate reductase (MTHFR) gene and neural tube defects (NTDs) in Chinese population. METHOD A total of 271 NTDs cases and 192 healthy controls were used in this study. Fifty-two selected single nucleotide polymorphism (SNP) sites in the MTHFR gene were analyzed with next-generation se...

Journal: :Human molecular genetics 2011
Amber Marean Amanda Graf Ying Zhang Lee Niswander

Neural tube defects (NTDs), a common birth defect in humans, result from the failure of the embryonic neural tube (NT) to close properly. NT closure is a complex, poorly understood morphogenetic process influenced by genes and environment. The most effective environmental influence in decreasing the risk for NTDs is folic acid (FA) fortification and supplementation, and these findings led to th...

2015
Yun Jin Pai Kit-Yi Leung Dawn Savery Tim Hutchin Helen Prunty Simon Heales Margaret E. Brosnan John T. Brosnan Andrew J. Copp Nicholas D.E. Greene

Glycine decarboxylase (GLDC) acts in the glycine cleavage system to decarboxylate glycine and transfer a one-carbon unit into folate one-carbon metabolism. GLDC mutations cause a rare recessive disease non-ketotic hyperglycinemia (NKH). Mutations have also been identified in patients with neural tube defects (NTDs); however, the relationship between NKH and NTDs is unclear. We show that reduced...

Journal: :Epilepsia 2003
Lauren Frey W Allen Hauser

Neural tube defects (NTDs)-malformations secondary to abnormal neural tube closure between the third and fourth weeks of gestational age-have a complex and imperfectly understood etiology in which both genetic and environmental factors appear to be involved. A number of specific chromosomal or single-gene disorders, presumably not affected by environmental influences, are associated with the de...

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