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Biomedical subjects

G Deysson

Publications and source records attributed to G Deysson.

At least 37 records · Page 2Linked to original sources
PubMed1976

[Study on a synchronized population of the antimitotic effect of cycloheximide at various phases of the cell cycle in Allium sativum L].

The effect on the entry in mitosis, induced in synchronized meristematic cells of Allium sativum L. by a treatment with cycloheximide (10 mug/ml-30 min) at different phases of the cell cycle has been investigated. In all cases cells enter mitosis after a long delay but it appears that the delay induced on G1 cells is longer. Incorporation of 3H leucine is immediately inhibited at any stage of the cell cycle.

Cell Division↗
PubMed1976

[Cytotoxicity of cadmium : study on root meristems of Allium sativum L].

Cadmium nitrate, acetate and sulphate cause death of root meristems of Allium sativum at 5.10(-7) Mol/ml concentration for the two first ones and 10(-7) Mol/ml for the last one. Lower concentrations do not induce chromosomal aberrations. As to the cellular toxicity, cadmium salts are between phenyl-mercuric-hydroxid and lead nitrate, the first one being the most active.

Cadmium↗
PubMed1975

[Cytotoxicity of aurintricarboxylic acid: inhibition of cell proliferation and of protein synthesis in Allium sativum L. root meristems].

The inhibitory action of aurine-tricarboxylic acid (ATA) on protein synthesis, known in vitro, has been checked in vivo in Allium sativum L. root meristems. Parallel to this inhibition, ATA acts on cell proliferation, on the one hand by preventing the entering of cells into prophase and, on the other hand, by disturbing the process of mitosis.

Aurintricarboxylic Acid↗
PubMed1975

[Use of methyl-3 hydroxy-6 quinazoline dione-2-4 to study effect of other compounds on mitosis duration in root meristems: application to phenylurethane].

Methyl-3 hydroxy-6 quinazolin dione-2-4 inhibits plant cell cytokinesis while modifying neither the duration of the cell cycle nor the duration of mitosis. Adding it to a solution of another compound enables one to determine the influence exerted by this compound on the duration of mitosis. This method, applied to phenylurethane, leads to see a slowing down of mitosis followed by a somewhat quick adaptation of the cells.

Mitosis↗
PubMed1975

[Effect of thioglycolic acid on Allium sativum L. root meristems].

Thioglycolic acid is, in the Allium test, somewhat less cytotoxic than mercaptoethanol but the characteristics of cytotoxicity are the same in both cases : the mitoclasic effect cannot be separated from a strong mitodepressive effect and is quickly followed by a lethal effect.

Mercaptoethanol↗