Paul Pévet

TL;DR: HIOMT activity is significantly increased by 80% in mid-December compared with end of October, and this increase is correlated with the appearance of a nycthemeral rhythm of pineal 5-ML levels, suggesting that NPY could be an important neurotransmitter involved in the seasonal control of the biochemistry of the European hamster pineal gland via a stimulatory effect on HIOMt activity.

TL;DR: The morphological, molecular and physiological analysis reveals very few differences between mouse and Arvicanthis ipRGCs, which imply that the influence of retinal inputs in defining the temporal niche could be related to a stronger cone input into ipR GCs in the cone-rich ArVicanthis retina, and to the higher sensitivity of type I ipRGAs and elevated proportion of M1 cells.

TL;DR: The results demonstrate, for the first time, the ability of the goose pineal gland and retina to synthesise melatonin and 5-methoxytryptophol in a rhythmic manner.

TL;DR: It is con cluded that the photic synchronization of body temperature rhythm does not depend on the 5-HTergic projection to SCN under ad libitum conditions, and the phase-advancing property of a timed caloric restriction on the daily rhythm of bodyTemperature rhythm is mediated by a neuronal circuit involving the 5,7-DHTergic projections toSCN.

TL;DR: It appears that the circadian expression of cerebellar clock genes exerts only a weak influence on the electrical output of Cerebellar neurons.