Linked Life Data

2327364

Source:http://linkedlifedata.com/resource/pubmed/id/2327364

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1990-5-24
pubmed:abstractText
Several retrospective studies suggest that abnormal deoxyribonucleic acid (DNA) content in colorectal carcinoma correlates with adverse clinical outcome. Many of these studies have used naked nuclei retrieved from formalin-fixed, paraffin-embedded tissues for flow cytometry. The purpose of this study was to prospectively analyze 137 colorectal carcinomas using fresh whole-cell suspensions for flow cytometry and to determine whether abnormal DNA content (DNA aneuploidy or tumors with high proliferative activity) correlates with Dukes' stage, histologic grade, lymphocytic infiltration of the tumor, tumor fibrosis, extramural venous spread, or tumor size. Cell suspensions for flow cytometry were prepared by enzyme disaggregation with collagenase XI, DNase, and trypsin. Satisfactory DNA histograms were obtained from 132 of the 137 samples. The mean coefficients of variance for the G1/G0 of the external 2C control, internal 2C populations, and aneuploid populations were 2.5, 3.5, and 3.5, respectively. The mean percentage of viable cells was 97%. Of 132 cases, 102 (77%) demonstrated abnormal DNA histograms, of which 77 (58%) showed DNA aneuploidy. Abnormal DNA histograms of DNA aneuploidy did not correlate with Dukes' stage. Tumors of higher histologic grade were more likely to demonstrate DNA aneuploidy, however, these differences did not reach statistical significance. The authors conclude that (1) satisfactory DNA histograms can be obtained with the use of a fresh, whole-cell technique; (2) abnormal DNA histograms did not statistically correlate with standard clinical, grading, or staging parameters; and (3) carcinomas of high histologic grade showed an increased proportion of aneuploid DNA histograms, but this trend did not reach statistical significance.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0002-9173
pubmed:author
pubmed:issnType
Print
pubmed:volume
93
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
615-20
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Deoxyribonucleic acid ploidy and cell cycle analysis of colorectal carcinoma by flow cytometry. A prospective study of 137 cases using fresh whole cell suspensions.
pubmed:affiliation
Department of Pathology, Cleveland Clinic Foundation, Ohio 44106.
pubmed:publicationType
Journal Article