Detection and enumeration of colonic mucosal cells in amniotic fluid using a colon epithelial-specific monoclonal antibody

D. Chitayat, Robert W. Marion, L. Squillante, D. K. Kalousek, K. M. Das

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Since its introduction, prenatal diagnosis of chromosomal and metabolic disorder by midtrimester amniocentesis has relied upon the use of a mixture of fetal cells obtained from amniotic fluid. Little knowledge has been gained in the sorting of these cells for diagnosis of tissue-specific disorders. In an attempt to determine the contribution of fetal colonic mucosal cells to the overall amniocyte population, we used the colonic epithelial-specific monoclonal antibody (MC-Ab) 7E12H12, IgM isotype. Specimens of the small intestine, colon, buccal mucosa, kidney, urinary bladder, and umbilical cord were obtained from electively aborted normal fetuses of 12-28 weeks' gestation. All of these specimens were examined with 7E12H12 by the immunoperoxidase technique. The MC-Ab reacted with the colonic epithelial cells but not with any of the other tissues. In addition, 40 amniotic fluid samples obtained from women between 16 and 18 weeks of gestation, who underwent amniocentesis because of advanced maternal age, were tested using a fluorescent activated cell sorter. Among the amniotic fluid specimens examined, 18.4 ± 10.3 per cent reacted with 7E12H12. Double immunofluorescence studies revealed that all MC-Ab-stained cells contained secretory component, confirming that they were epithelial in origin. All fetuses whose amniotic fluid was analysed had normal karyotypes and amniotic fluid alpha-fetoprotein levels that were also normal. This study demonstrates that cell-specific MC-Ab can be used to detect colon cells in the amniotic fluid and that colon cells contribute significant numbers in the mixture of amniotic fluid cells. This technique could be helpful in the prenatal diagnosis of disorders in which the flow of amniotic fluid through the fetal intestine is impaired, such as cystic fibrosis, imperforate anus, Hirschsprung aganglionic megacolon, and intestinal atresia.

Original languageEnglish (US)
Pages (from-to)725-732
Number of pages8
JournalPrenatal Diagnosis
Volume10
Issue number11
DOIs
StatePublished - 1990

Fingerprint

Amniotic Fluid
Colon
Monoclonal Antibodies
Amniocentesis
Prenatal Diagnosis
Intestinal Atresia
Chromosome Disorders
Aborted Fetus
Imperforate Anus
Secretory Component
Pregnancy
Hirschsprung Disease
Umbilical Cord
Maternal Age
alpha-Fetoproteins
Mouth Mucosa
Second Pregnancy Trimester
Immunoenzyme Techniques
Karyotype
Cystic Fibrosis

ASJC Scopus subject areas

  • Genetics(clinical)
  • Obstetrics and Gynecology

Cite this

Detection and enumeration of colonic mucosal cells in amniotic fluid using a colon epithelial-specific monoclonal antibody. / Chitayat, D.; Marion, Robert W.; Squillante, L.; Kalousek, D. K.; Das, K. M.

In: Prenatal Diagnosis, Vol. 10, No. 11, 1990, p. 725-732.

Research output: Contribution to journalArticle

Chitayat, D. ; Marion, Robert W. ; Squillante, L. ; Kalousek, D. K. ; Das, K. M. / Detection and enumeration of colonic mucosal cells in amniotic fluid using a colon epithelial-specific monoclonal antibody. In: Prenatal Diagnosis. 1990 ; Vol. 10, No. 11. pp. 725-732.
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