Number, volume, surface and inner structure of the rat liver cells nucleoli

Mironescu, S; Dragomir, C.T.

doi:10.1016/0014-4827(67)90284-4

Cited by 4 publications

(2 citation statements)

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“…Mironescu and Dragomir (1967) have also demonstrated that total nucleolar volume per nucleus was constant regardless of nucleolar number. These investigations suggest a certain amount of nucleolar material present independent of nucleolar number.…”

Section: Introductionmentioning

confidence: 85%

“…Previous studies by Meinders-Groenevend and James (1971) reported that total mean nucleolar area per nucleus in rat liver remains constant and is independent of nucleolar number. Mironescu and Dragomir (1967) have also demonstrated that total nucleolar volume per nucleus was constant regardless of nucleolar number. These investigations suggest a certain amount of nucleolar material present independent of nucleolar number.…”

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An interferometric analysis of nucleoli in cultured mesothelial cells

Blumenstein

Amenta

1981

Anat. Rec.

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Previous studies have indicated that total nucleolar area and volume remain constant regardless of the number of nucleoli. The question remains whether this relationship is valid for mass. To answer this, total nucleolar mass values were obtained from nuclei of living mesothelial cells in culture possessing one to four nucleoli. The nucleolar mass was calculated using interferometry. The mean total nucleolar dry mass for cells with one, two, three, and four nucleoli was 40 x 10(-12)gm, 38.4 x 10(-12)gm, 39.1 x 10(-12)gm, and 41.4 x 10(-12)gm, respectively. These data suggest that on the average, each cell had approximately the same total nucleolar dry mass regardless of the number of nucleoli. In an additional study, interferometry was employed to reveal changes in nucleolar mass and concentration during a seven-hour period. It was concluded that the nucleolus is a dynamic organelle, with its total mass varying in time from an average 40 x 10(-12)gm with a mean concentration of 22.2gm/100cm3.

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Section: Introductionmentioning

confidence: 85%

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confidence: 85%

An interferometric analysis of nucleoli in cultured mesothelial cells

Blumenstein

Amenta

1981

Anat. Rec.

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Some quantitative data regarding the nucleoli in cell nuclei from rat liver of different ploidy classes

Meinders-Groeneveld

James

1971

Z. Zellforsch.

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Endopolyploidy in vertebrate liver: An evolutionary perspective

Brasch

1980

Cell Biology International Reports

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Hepatocyte nuclei in several species of vertebrates were examined, to establish the frequency of polyploidy and related parameters along evolutionary lines. Nuclei were compared in terms of volume, DNA content, ploidy ranges and internal organization. Several trends emerged. When present, heterochromatin occupied 20--25% of nuclear profile areas, irrespective of nuclear volume and poloidy; the volume of heterochromatin, however, increased in direct proportion to ploidy level. Regardless of internal organization, ploidy and species, a direct correlation emerged between the volumes of nuclei and their absolute DNA content. Results are discussed in terms of structural and genic DNA.

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Number, volume, surface and inner structure of the rat liver cells nucleoli

Cited by 4 publications

References 10 publications

An interferometric analysis of nucleoli in cultured mesothelial cells

An interferometric analysis of nucleoli in cultured mesothelial cells

Some quantitative data regarding the nucleoli in cell nuclei from rat liver of different ploidy classes

Endopolyploidy in vertebrate liver: An evolutionary perspective

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