Paul Pévet

TL;DR: The ultrastructure of the mole pinealocytes, a mammal which lives practically in complete darkness, has been examined and compared with that of other mammals and indicates the presence of a paracrystalline structure of a possibly proteinaceous nature in some cisterns of the granular endoplasmic reticulum and between the two layers of the nuclear membrane.

TL;DR: The data indicate that A. ansorgei is an interesting experimental model to understand the regulation of the circadian timing system in day-active species and its timing occurring 2 h before and 0.5 h after the onset of light under short and long photoperiods, respectively.

TL;DR: The data suggest 1) that HIOMT gene expression is partly regulated by b1-stimulation; and 2) thatHIOMT activity is regulated over the short term by a nonnoradrenergic stimulus and over the long term by noradrenergy stimulation.

TL;DR: The ultrastructure of pinealocytes of the mole-rat (Spalax ehrenbergi), a blind subterranean mammal living in complete darkness, was examined and compared with pinealocyte of other mammals.

TL;DR: Shifting the light–dark cycle on a weekly basis was efficient to induce circadian desynchronization, as evidenced by strong disturbances in the daily expression of locomotor activity.