Document Detail


Detecting abnormal human chromosome constitutions by dual laser flow cytogenetics.
MedLine Citation:
PMID:  2431619     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Our custom dual laser chromosome sorter has been used to characterize and isolate metaphase human chromosomes rapidly for gene mapping purposes. Herein, we tested how well this system could detect unknown abnormal human chromosome constitutions. These results were compared to those of conventional cytogenetic analyses by banding and photomicrography. The sorter was used to analyze each cell line stained with two different stain pairs: DIPI-chromomycin and Hoechst-chromomycin. In 20 min, two histograms representing 2 X 10(5) chromosomes each were collected for each stain pair. A blind study of 11 samples by flow analysis demonstrated excellent concordance between the abnormal chromosomes detected and the diagnoses of Giemsa-banded karyotypes. Aneuploidy was identified by changes in the number of chromosomes in each histogram peak, while rearrangements such as deletions and translocations caused shifts in the histogram peak positions. The direction and distance of histogram peak shifts are directly related to alterations in chromosome size and banding pattern. We conclude that dual-laser flow analysis may provide a rapid approach to the screening and diagnosis of chromosome abnormalities.
Authors:
R V Lebo; M S Golbus; M C Cheung
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of medical genetics     Volume:  25     ISSN:  0148-7299     ISO Abbreviation:  Am. J. Med. Genet.     Publication Date:  1986 Nov 
Date Detail:
Created Date:  1986-12-31     Completed Date:  1986-12-31     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7708900     Medline TA:  Am J Med Genet     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  519-29     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Chromosome Aberrations / diagnosis*
Chromosome Disorders
Chromosomes, Human*
Flow Cytometry
Humans
Karyotyping / methods*
Lasers
Staining and Labeling

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