نتایج جستجو برای: anencephaly
تعداد نتایج: 570 فیلتر نتایج به سال:
Despite the wealth of epidemiological material of the last decade, birth defects are still the chief cause of perinatal mortality and no significant breakthrough in understanding or reduction has yet been seen. Many proposed aetiological factors are still being evaluated. This report suggests a possible, simple, remediable factor in the aetiology of defects of the central nervous system.
A gravid middle-aged woman viewed on ultrasound demonstrated a viable anencephalic fetus at 25 weeks gestational age. The absence of the bilateral cerebral hemisphere, cranial vault, anhydramnios, abdominal ascites, and phaco-rhizomelia was discovered. We discuss evidence-based quadra –amelia in non-consanguineous (negroid) couple 25-week prenatal scan. Apart from amelia all four limbs, had asc...
Spina bifida and anencephaly: fewer patients, more problems Anencephaly and spina bifida aperta occur when the neural tube fails to develop normally and are the most striking of the common malformations. Ever since the pioneering studies of Record and McKeown' 2 it has been evident that the birth prevalence of these defects-the number of affected infants born, dead or alive, expressed as a prop...
STUDY QUESTION What are the long term trends in the total (live births, fetal deaths, and terminations of pregnancy for fetal anomaly) and live birth prevalence of neural tube defects (NTD) in Europe, where many countries have issued recommendations for folic acid supplementation but a policy for mandatory folic acid fortification of food does not exist? METHODS This was a population based, o...
BACKGROUND In the past, northern China's Shanxi Province has reported the highest incidence of neural tube defects (NTDs) in the world. However, little is known about the epidemiology of NTDs in this area in recent years. METHODS Data were collected from a population-based birth defects surveillance system in 4 counties that captures information on all live births, stillbirths of at least 20 ...
A family is reported which includes five males, two with spina bifida, two sibs with anencephaly, and one with both high and low spinal lesions. The affected subjects came from four sibships in three generations. The mode of inheritance of these neural tube defects is consistent with X linkage.
Neural tube defects, such as spinabifida, craniorachischisis and anencephaly, are some of the most common birth defects in humans. Recent studies in mouse model systems suggest that craniorachischisis is associated with mutations in genes that regulate cell polarity. Using Xenopus as a model system, Wallingford and Harland have now shed light on the mechanism by which these pathways affect neur...
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