نتایج جستجو برای: ntd

تعداد نتایج: 1309  

ژورنال: :مجله دانشگاه علوم پزشکی گیلان 0
آزادرضا منصوریان a.r mansoorian گرگان- بیمارستان دزیانی- مرکز تحقیقات ناهنجاری های مادرزادی محمد جعفر گلعلی پور m.j golalipoor الهام مبشری e mobasheri محمد علی وکیلی m.a vakili

چکیده مقدمه: نقائص لوله عصبی (ntd) متشکل از گروهی از ناهنجاری های مادرزادی است که شامل اسپینا بی فیدا، آنانسفالی و آنسفالوسل می باشد. مطالعه کلی نشان داده است که میزانntd در گرگان 12/3 در هزار تولد می باشد. بعضی از مطالعات نشان داده اند که کاهش روی یکی ازعوامل مهم ناهنجاری های لوله عصبی است. هدف: تعیین و مقایسه سطح سرمی روی در مادران دارای نوزادان مبتلا به ntd و مادران نوزادان سالم در این منطقه...

ژورنال: سلامت کار ایران 2014

  Background and aim s : The correct assessment of volatile organic compounds is a main stage of their control's action plan. Needle trap device (NTD) as a novel technique with all advantages of microextraction methods, is an inexpensive and rapid technique for survey of air pollution agents. In this study the performance of this technique was investigated for sampling and analysis of organohal...

Journal: :Public health challenges 2023

Neglected tropical diseases (NTD), a broad set of infectious prevalent in and subtropical environments, are widely known to affect individuals with limited resources underserved communities. Nigeria is one the countries highest cases NTD, an estimated 100 million people country at risk for least NTD. In Nigeria, NTD master plan recognizes behavioural change communication as important part its s...

Journal: :Biochemistry 2013
Yuan Fu Marcus J C Long Mike Rigney Saba Parvez William A Blessing Yimon Aye

An N-terminal-domain (NTD) and adjacent catalytic body (CB) make up subunit-α of ribonucleotide reductase (RNR), the rate-limiting enzyme for de novo dNTP biosynthesis. A strong linkage exists between ligand binding at the NTD and oligomerization-coupled RNR inhibition, inducible by both dATP and nucleotide chemotherapeutics. These observations have distinguished the NTD as an oligomeric regula...

Journal: :Reproductive toxicology 2016
J E H Bergman E Otten J B G M Verheij H E K de Walle

Periconceptional folic acid (FA) reduces neural tube defect (NTD) risk, but seems to have a varying effect per NTD subtype. We aimed to study the effect of FA supplementation on NTD subtype distribution using data from EUROCAT Northern Netherlands. We included all birth types with non-syndromal NTDs born in 1997-2012. By Fisher's exact test we analyzed possible differences in NTD subtype distri...

Journal: :The Journal of biological chemistry 2004
Wendell A Smith Brandon T Schurter Flossie Wong-Staal Michael David

RNA helicase A (RHA) undergoes nuclear translocation via a classical import mechanism utilizing karyopherin beta. The nuclear transport domain (NTD) of RHA is known to be necessary and sufficient for its bi-directional nuclear trafficking. We report here that arginine methylation is a novel requirement for NTD-mediated nuclear import. Nuclear translocation of glutathione S-transferase (GST)-NTD...

Journal: :Nucleic acids research 2001
G W Daughdrill J Ackerman N G Isern M V Botuyan C Arrowsmith M S Wold D F Lowry

Replication protein A (RPA) is a heterotrimeric, multi-functional protein that binds single-stranded DNA (ssDNA) and is essential for eukaryotic DNA metabolism. Using heteronuclear NMR methods we have investigated the domain interactions and ssDNA binding of a fragment from the 70 kDa subunit of human RPA (hRPA70). This fragment contains an N-terminal domain (NTD), which is important for hRPA70...

Human exposures to volatile organic compounds (VOCs) are associated with a wide range of health problems. Due to these adverse effects of VOCs on the human health, determination of trace levels of VOCs is very important for accurate assessment of indoor and outdoor exposure. Solid phase microextraction (SPME), needle trap device (NTD) and hollow fiber- liquid phase microextraction (HF-LPME) are...

Journal: :Public health nutrition 2009
Ting Zhang Ruolei Xin Xue Gu Fang Wang Lijun Pei Liangming Lin Gong Chen Jianxin Wu Xiaoying Zheng

OBJECTIVE To examine the association between the risk of neural tube defects (NTD) and maternal serum vitamin B12, folate and homocysteine in a high-risk area of China. DESIGN A case-control study was carried out in Luliang mountain area of Shanxi Province. SUBJECTS/SETTING A total of eighty-four NTD pregnancies and 110 matched controls were included in the study; their serum vitamin B12 an...

2017
Longjin Yang Han-Shen Tae Zhou Fan Xiaoxia Shao Shaoqiong Xu Suwen Zhao David J. Adams Chunguang Wang

Nicotinic acetylcholine receptors (nAChRs) play a fundamental role in nervous signal transmission, therefore various antagonists and agonists are highly desired to explore the structure and function of nAChRs. Recently, a novel dimeric αD-conotoxin GeXXA was identified to inhibit nAChRs by binding at the top surface of the receptors, and the monomeric C-terminal domain (CTD) of αD-GeXXA retains...

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