Quantification of human amniotic fluid constituents by high resolution proton nuclear magnetic resonance (NMR) spectroscopy.

Abstract:

:We have investigated the ability of high-resolution proton NMR spectroscopy to provide a biochemical constituent screening of human amniotic fluid (AF). Proton NMR spectra were obtained at 300 MHz on AF from patients undergoing amniocentesis in the mid-trimester. Only AF from normal pregnancies (normal fetal karyotype, normal alpha-fetoprotein levels, normal birth outcome) was used in this study. The AF supernatant was lyophilized and resuspended in deuterated water containing 0.1 mM phosphate buffer and 6.02 mM disodium maleate. Identification of low molecular weight compounds was confirmed by two-dimensional NMR spectra (primarily correlated spectroscopy, or COSY) and standard addition techniques. A broad profile of compounds were 'NMR visible' in a single proton spectrum, including creatinine, glucose, organic acids (acetate, citrate, and lactate) and several amino acids (alanine, histidine, leucine, phenylalanine, tyrosine and valine). The proton spectrum was unaffected by prior freezing/thawing of AF samples. We were able to quantify compounds by comparison with an added concentration standard (maleate) at concentrations as low as 30 microM. Good agreement with literature values based on other analytical techniques was obtained.

journal_name

Prenat Diagn

journal_title

Prenatal diagnosis

authors

Sims CJ,Fujito DT,Burholt DR,Dadok J,Giles HR,Wilkinson DA

doi

10.1002/pd.1970130609

subject

Has Abstract

pub_date

1993-06-01 00:00:00

pages

473-80

issue

6

eissn

0197-3851

issn

1097-0223

journal_volume

13

pub_type

杂志文章
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    更新日期:2015-08-01 00:00:00

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    authors: Loft AG,Høgdall E,Larsen SO,Nørgaard-Pedersen B

    更新日期:1993-02-01 00:00:00

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  • Quantitative analysis of cellular fetal hemoglobin gamma chain messenger RNA (HbF-gamma mRNA) in maternal peripheral blood.

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    更新日期:2004-11-01 00:00:00

  • Changing trends in carrier screening for genetic disease in the United States.

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  • The relationship between maternal body mass, smoking status and ethnicity and first trimester nuchal translucency thickness.

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    authors: Cowans NJ,Spencer K

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  • Uterine artery Doppler longitudinal changes in pregnancies complicated with intrauterine growth restriction without preeclampsia.

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    journal_title:Prenatal diagnosis

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    authors: Contro E,Cha DH,De Maggio I,Ismail SY,Falcone V,Gabrielli S,Farina A

    更新日期:2014-12-01 00:00:00

  • Changing indications for fetal echocardiography in a University Center population.

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    更新日期:2004-10-01 00:00:00

  • Syndromic associations with congenital anomalies of the fetal thorax and abdomen.

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    pub_type: 杂志文章,评审

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    更新日期:2008-07-01 00:00:00

  • Validation of two-channel sequencing-by-synthesis for noninvasive prenatal testing of fetal whole and partial chromosome aberrations.

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    pub_type: 杂志文章

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    更新日期:2016-03-01 00:00:00

  • Ethical and counseling challenges in prenatal exome sequencing.

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    pub_type: 杂志文章

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  • RhD status of a fetus at risk for haemolytic disease with a discrepant maternal DNA-based RhD genotype.

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    pub_type: 杂志文章

    doi:10.1002/(sici)1097-0223(199905)19:5<424::aid-pd562

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  • Prenatal ultrasonic findings in congenital chloride diarrhoea.

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    pub_type: 杂志文章

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    authors: Kirkinen P,Jouppila P

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  • Correlation between biomagnetic and Doppler findings of umbilical artery in fetal growth restriction.

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    authors: Kotini A,Avgidou K,Koutlaki N,Sigalas J,Anninos P,Anastasiadis P

    更新日期:2003-04-01 00:00:00

  • Prenatal diagnosis and obstetrical management of multicystic dysplastic kidney disease.

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  • Prenatal diagnosis by minisatellite analysis in Italian families with phenylketonuria.

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    journal_title:Prenatal diagnosis

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  • Fetal arthrogryposis multiplex congenita/fetal akinesia deformation sequence (FADS)-Aetiology, diagnosis, and management.

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    journal_title:Prenatal diagnosis

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  • Trisomy 20 mosaicism in amniotic fluid cells.

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  • Diagnostic accuracy of random massively parallel sequencing for non-invasive prenatal detection of common autosomal aneuploidies: a collaborative study in Europe.

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  • Clinical, cytogenetic, and molecular analyses of prenatally diagnosed mosaic tetrasomy for distal chromosome 15q and review of the literature.

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  • Detection of both the normal and mutant alleles in single cells of individuals heterozygous for the sickle cell mutation--prelude to preimplantation diagnosis.

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    doi:10.1002/pd.1970130107

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  • Prenatal diagnosis of congenital myasthenia with arthrogryposis in a myasthenic mother.

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    pub_type: 杂志文章,评审

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