Quantitation of fibrillin immunofluorescence in fibroblast cultures in the Marfan syndrome

G. B. Schaefer, Maurice Godfrey

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The Marfan syndrome (MFS) is a heritable connective tissue disorder manifested by defects in the skeletal, ocular, and cardiovascular systems. Diagnosis of MFS is based on clinical findings. At present there are no laboratory tests for specific determination of this disorder. Defects in fibrillin, an elastin‐associated microfibrillar glycoprotein, are now known to cause the variable and pleiotropic manifestations of MFS. Immunofluorescence studies of skin sections and dermal fibroblast cultures were the first to show this association. Most unequivocal cases of the Maffan syndrome exhibited an apparent reduction in fibrillin immunofluorescence. The prospect of examining patients whose clinical findings suggest a possible diagnosis of the Marfan syndrome has stimulated us to attempt quantitation of immunofluorescence. In the study described here we used computer‐enhanced image analysis to establish “normal” and “abnormal” (Marfan) parameters of fibrillin immunofluorescence in dermal fibroblast cultures. Quantitation of fluorescence from control individuals showed a median of 21%, while the median fibrillin fluorescence in MFS patients was 6% with a confidence interval of 15%. These findings were statistically significant to p<0.01. It is hoped that these analyses may become a useful adjunct in the clinical diagnosis of MFS.

Original languageEnglish (US)
Pages (from-to)144-149
Number of pages6
JournalClinical Genetics
Volume47
Issue number3
DOIs
StatePublished - Mar 1995

Fingerprint

Marfan Syndrome
Fluorescent Antibody Technique
Fibroblasts
Skin
Fluorescence
Cardiovascular System
Connective Tissue
Fibrillins
Glycoproteins
Confidence Intervals

Keywords

  • Marfan syndrome
  • digitized imaging analysis
  • elastin associated microfibrils
  • fibrillin
  • fibrobiasts
  • immunofluorescence
  • tissue culture

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Quantitation of fibrillin immunofluorescence in fibroblast cultures in the Marfan syndrome. / Schaefer, G. B.; Godfrey, Maurice.

In: Clinical Genetics, Vol. 47, No. 3, 03.1995, p. 144-149.

Research output: Contribution to journalArticle

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