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F Fourré

Publications and source records attributed to F Fourré.

2 recordsLinked to original sources

[Deterministic differential equations in cytokinetics].

Carcinogenesis is generally viewed as the result of a disrupted equilibrium between the processes of proliferation, differentiation, migration and loss. In cell kinetics, perturbation of fundamental kinetic parameters such as the mitotic index or the growth fraction may reflect a carcinogenic process. In this paper, we present a system of deterministic differential equations describing the dynamical evolution of a cell population. We show that this model can account for asynchronicity of cells and simulate the fraction of labelled mitoses experiment as well.

Cell Cycle↗

[Synchronizing effect of corticosterone's circadian rhythm on the DNA synthesis rate in the liver of the young rat].

Post-natal liver proliferation is synchronized by corticosterone circadian variation from the 21st day of life in rats. After tritiated thymidine injection, we compare the labelling index, the specific radioactivity of DNA, the DNA synthesis rate, the plasma corticosterone in un-rhythmed rats at day 15 and in rhythmed rats at day 25. No variation of these parameters is found during the 15th nycthemeron. During the 25th nycthemeron, the corticosterone circadian wave peaking at 18 h is followed by the circadian variations of the 3 proliferation parameters peaking at 24 h.

Animals↗