Biomaterial Database

Thymidine labeling index, flow cytometric S-phase measurement, and DNA index in human tumors. Comparisons and correlations. 1988

J S Meyer, and M D Coplin

St. Luke's Hospital, Chesterfield, Missouri 63017.

The results of flow cytometry were compared with the tritiated thymidine labeling index (TLI) in 314 tumors studied in one laboratory and 163 tumors from a second laboratory, a total of 477, including 306 breast carcinomas. Flow cytometric DNA measurements were obtained on mechanically dissociated fresh tissue stained with propidium iodide or DAPI. Spearman's rank order correlation coefficients (r) for TLI versus flow cytometric S-phase measurement (%S) were 0.38 to 0.55 (P less than 0.001) for diploid DNA index (DNAI) and 0.59 and 0.67 (P less than 0.001) for aneuploid DNAI. The correlations were similar for breast and nonmammary tumors. No correlation of DNAI with TLI or %S was observed for aneuploid tumors, although the aneuploid tumors had significantly higher TLI and %S than diploid tumors (P less than 0.001). Mean TLI for the breast carcinomas was 4.6% and 3.6% for diploid tumors in Series 1 and 2, respectively; for aneuploid tumors, 9.9% and 9.3%. Respective mean %S for diploid breast carcinomas was 6.8% and 7.4%; for aneuploid breast carcinomas, it was 13.6% and 14.5%. The excess of %S over TLI was greatest for tumors with low TLI and appeared to result largely from debris in DNA histograms. TLI, %S and DNAI each predicted both absolute survival and relapse-free survival of breast carcinoma patients.

UI	MeSH Term	Description	Entries
D007399	Interphase	The interval between two successive CELL DIVISIONS during which the CHROMOSOMES are not individually distinguishable. It is composed of the G phases (G1 PHASE; G0 PHASE; G2 PHASE) and S PHASE (when DNA replication occurs).	Interphases
D009369	Neoplasms	New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.	Benign Neoplasm,Cancer,Malignant Neoplasm,Tumor,Tumors,Benign Neoplasms,Malignancy,Malignant Neoplasms,Neoplasia,Neoplasm,Neoplasms, Benign,Cancers,Malignancies,Neoplasias,Neoplasm, Benign,Neoplasm, Malignant,Neoplasms, Malignant
D011003	Ploidies	The degree of replication of the chromosome set in the karyotype.	Ploidy
D011379	Prognosis	A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.	Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D001943	Breast Neoplasms	Tumors or cancer of the human BREAST.	Breast Cancer,Breast Tumors,Cancer of Breast,Breast Carcinoma,Cancer of the Breast,Human Mammary Carcinoma,Malignant Neoplasm of Breast,Malignant Tumor of Breast,Mammary Cancer,Mammary Carcinoma, Human,Mammary Neoplasm, Human,Mammary Neoplasms, Human,Neoplasms, Breast,Tumors, Breast,Breast Carcinomas,Breast Malignant Neoplasm,Breast Malignant Neoplasms,Breast Malignant Tumor,Breast Malignant Tumors,Breast Neoplasm,Breast Tumor,Cancer, Breast,Cancer, Mammary,Cancers, Mammary,Carcinoma, Breast,Carcinoma, Human Mammary,Carcinomas, Breast,Carcinomas, Human Mammary,Human Mammary Carcinomas,Human Mammary Neoplasm,Human Mammary Neoplasms,Mammary Cancers,Mammary Carcinomas, Human,Neoplasm, Breast,Neoplasm, Human Mammary,Neoplasms, Human Mammary,Tumor, Breast
D004273	DNA, Neoplasm	DNA present in neoplastic tissue.	Neoplasm DNA
D005434	Flow Cytometry	Technique using an instrument system for making, processing, and displaying one or more measurements on individual cells obtained from a cell suspension. Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp). Fluorescence provides a quantitative measure of various biochemical and biophysical properties of the cell, as well as a basis for cell sorting. Other measurable optical parameters include light absorption and light scattering, the latter being applicable to the measurement of cell size, shape, density, granularity, and stain uptake.	Cytofluorometry, Flow,Cytometry, Flow,Flow Microfluorimetry,Fluorescence-Activated Cell Sorting,Microfluorometry, Flow,Cell Sorting, Fluorescence-Activated,Cell Sortings, Fluorescence-Activated,Cytofluorometries, Flow,Cytometries, Flow,Flow Cytofluorometries,Flow Cytofluorometry,Flow Cytometries,Flow Microfluorometries,Flow Microfluorometry,Fluorescence Activated Cell Sorting,Fluorescence-Activated Cell Sortings,Microfluorimetry, Flow,Microfluorometries, Flow,Sorting, Fluorescence-Activated Cell,Sortings, Fluorescence-Activated Cell
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013936	Thymidine	A nucleoside in which THYMINE is linked to DEOXYRIBOSE.	2'-Deoxythymidine,Deoxythymidine,2' Deoxythymidine