[DNA and RNA contents of megakaryocytes using acridine orange staining]. 1998

Y Kobayashi, and Y Takahashi, and S Chikayama, and M Ikeda, and N Uoshima, and K Tanaka, and S Kimura, and K Wada, and T Sugano, and M Ozawa, and M Kondo
1st Department of Internal Medicine, Kyoto Prefectural University of Medicine.

We developed a new microfluorometric method to measure the DNA and RNA contents of individual megakaryocytes using acridine orange (AO) staining in human bone marrow smears. Some bone marrow smears were fixed with ethanol and treated with pretreatment solution and then stained with an AO staining solution. The DNA content was assayed by measuring the green fluorescence and the RNA content was assayed by measuring the red fluorescence under B excitation with microfluorometer using peripheral lymphocytes as the control. The ploidy peak was shown to be 16N in all of 5 normal controls, but it was 8N in the patient with refractory anemia with excess of blasts in transformation (RAEB-T). There was not difference in the RNA content/DNA content ratios (RI) between each ploidy in the normal controls. The RI of the patient with RAEB-T was lower than that of the normal controls. The measurement of the DNA-RNA contents may be useful as a new megakaryocytic parameter.

UI MeSH Term Description Entries
D008533 Megakaryocytes Very large BONE MARROW CELLS which release mature BLOOD PLATELETS. Megakaryocyte
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011003 Ploidies The degree of replication of the chromosome set in the karyotype. Ploidy
D001854 Bone Marrow Cells Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells. Bone Marrow Cell,Cell, Bone Marrow,Cells, Bone Marrow,Marrow Cell, Bone,Marrow Cells, Bone
D003592 Cytophotometry A method for the study of certain organic compounds within cells, in situ, by measuring the light intensities of the selectively stained areas of cytoplasm. The compounds studied and their locations in the cells are made to fluoresce and are observed under a microscope. Microfluorometry,Cytophotometries,Microfluorometries
D004247 DNA A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine). DNA, Double-Stranded,Deoxyribonucleic Acid,ds-DNA,DNA, Double Stranded,Double-Stranded DNA,ds DNA
D004396 Coloring Agents Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. Coloring Agent,Dye,Dyes,Organic Pigment,Stain,Stains,Tissue Stain,Tissue Stains,Organic Pigments,Pigments, Inorganic,Agent, Coloring,Inorganic Pigments,Pigment, Organic,Pigments, Organic,Stain, Tissue,Stains, Tissue
D005456 Fluorescent Dyes Chemicals that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags. Flourescent Agent,Fluorescent Dye,Fluorescent Probe,Fluorescent Probes,Fluorochrome,Fluorochromes,Fluorogenic Substrates,Fluorescence Agents,Fluorescent Agents,Fluorogenic Substrate,Agents, Fluorescence,Agents, Fluorescent,Dyes, Fluorescent,Probes, Fluorescent,Substrates, Fluorogenic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000165 Acridine Orange A cationic cytochemical stain specific for cell nuclei, especially DNA. It is used as a supravital stain and in fluorescence cytochemistry. It may cause mutations in microorganisms. Tetramethyl Acridine Diamine,3,6-Bis(dimethylamino)acridine,Acridine Orange Base,Basic Orange 3RN,C.I. 46005,C.I. Basic Orange 14,Euchrysine,N,N,N',N'-Tetramethyl-3,6-Acridinediamine Hydrochloride,Rhoduline Orange,Acridine Diamine, Tetramethyl,Base, Acridine Orange,Diamine, Tetramethyl Acridine,Orange 3RN, Basic,Orange Base, Acridine,Orange, Acridine,Orange, Rhoduline

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