Targeted quantitative amniotic cell profiling: A potential diagnostic tool in the prenatal management of neural tube defects

2013 ◽  
Vol 48 (6) ◽  
pp. 1205-1210 ◽  
Author(s):  
Elliot C. Pennington ◽  
Fabienne L. Gray ◽  
Azra Ahmed ◽  
David Zurakowski ◽  
Dario O. Fauza
2014 ◽  
Vol 37 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Elliot C. Pennington ◽  
Kristy L. Rialon ◽  
Beatrice Dionigi ◽  
Azra Ahmed ◽  
David Zurakowski ◽  
...  

Purpose: The proportions of select stem cells in term amniotic fluid have been shown to correlate with the type and size of experimental neural tube defects (NTDs). We sought to determine the impact of gestational age upon this form of targeted amniotic cell profiling. Methods: Sprague-Dawley fetuses with retinoic acid-induced NTDs (n = 110) underwent amniotic fluid procurement at four time points in gestation. Samples were analyzed by flow cytometry for the presence of cells concomitantly expressing Nestin and Sox-2 (neural stem cells, aNSCs) and cells concomitantly expressing CD29 and CD44 (mesenchymal stem cells, aMSCs). Statistical analysis was by nonparametric Kruskal-Wallis ANOVA (p < 0.05). Results: There was a statistically significant impact of gestational age on the proportions of both aMSCs (p = 0.01) and aNSCs (p < 0.01) in fetuses with isolated spina bifida. No such impact was noted in normal fetuses (p > 0.10 for both cells), in isolated exencephaly (p > 0.10 for both cells), or in combination defects (p > 0.10 for both cells). Gestational age had no effect on aNSC/aMSC ratios. Conclusions: Targeted quantitative amniotic cell profiling varies with gestational age in experimental isolated spina bifida. This finding should be considered prior to the eventual translation of this diagnostic adjunct into the prenatal evaluation of these anomalies.


2014 ◽  
Vol 37 (3) ◽  
pp. 226-234 ◽  
Author(s):  
Céline Ovaere ◽  
Alex Eggink ◽  
Jute Richter ◽  
Titia E. Cohen-Overbeek ◽  
Frank Van Calenbergh ◽  
...  

Introduction: We review the characteristics and prenatal choices of patients recently evaluated for neural tube defects (NTD) at two tertiary units. The prenatal diagnosis of NTD allows parents to consider all prenatal options. In selected cases of spina bifida aperta this also includes fetal surgery, which we started offering after combined ‘in-house' and ‘exported' training. Material and Methods: This is a retrospective review of prospectively collected data on NTD diagnosed over the last 8 years and recent fetal surgery referrals. Results: A total of 167 patients were referred for assessment at a median of 19 weeks. Cranial lesions were diagnosed significantly earlier than spinal lesions. Of the open spinal lesions, 77% were isolated. Of these, 22% were managed expectantly and 1 (1%) had fetal surgery. There was no correlation between parental decisions on prenatal management with disease-specific severity markers. We had 14 fetal surgery referrals, all but 1 from beyond our typical referral area; 6 of the assessed patients were operated on, 4 were expectantly managed and 4 requested termination of pregnancy (TOP). These pregnancy outcomes were in the expected range. Discussion: Open spina bifida is mainly diagnosed in the second trimester and 76% of subjects request TOP, irrespective of the severity indicators. The number of local patients considering fetal surgery is low.


2014 ◽  
Vol 186 (2) ◽  
pp. 575 ◽  
Author(s):  
E.C. Pennington ◽  
K.L. Rialon ◽  
B. Dionigi ◽  
A. Ahmed ◽  
D. Zurakowski ◽  
...  

2021 ◽  
Vol 8 (1) ◽  
pp. e3-e4
Author(s):  
Elaine Abrams ◽  
Landon Myer

2004 ◽  
Author(s):  
Linda Longerich ◽  
Roy West ◽  
Ed Randell ◽  
Marian Crowley ◽  
Shiliang Liu ◽  
...  

Author(s):  
K.K. Otaryan , C.G. Gagaev

The case of prenatal detection of spina bifida at 12+3 weeks of gestation is described. Termination of pregnancy was performed at 13+3 weeks. Post-abortion karyotyping revealed triploidy (69XXX). Diagnostic tools for early detection of neural tube defects in the 1st trimester of gestation and subsequent appropriate management of pregnancy are discussed.


1996 ◽  
Vol 166 (2) ◽  
pp. 466-467 ◽  
Author(s):  
G K Sickler ◽  
D A Nyberg

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