Glucocorticoids, hormones produced by the adrenal gland cortex, exert numerous functions
in body homeostasis and the response of the organism to external stressors. One striking …

Melatonin is a much conserved feature in vertebrates that plays a central role in the
entrainment of daily and annual physiological rhythms. Investigations aiming at …

The mammalian circadian timing system is composed of a central pacemaker in the
suprachiasmatic nucleus (SCN) of the brain and subsidiary oscillators in most peripheral cell …

The zebrafish represents a fascinating model for studying key aspects of the vertebrate
circadian timing system. Easy access to early embryonic development has made this …

Zebrafish represent the one alternative vertebrate, genetic model system to mice that can be
easily manipulated in a laboratory setting. With the teleost Medaka (Oryzias latipes), which …

Zebrafish has become one of the most important animal models in research. Most of the
variables studied using zebrafish are influenced by water temperature. The objective of this …

This review examines the connections between circadian and metabolic rhythms. Examples
from a wide variety of well-studied organisms are used to illustrate some of the genetic and …

The Timeless protein is essential for circadian rhythm in Drosophila. The Timeless
orthologue in mice is essential for viability and appears to be required for the maintenance …

Light affects animal physiology and behavior more than simply through classical visual,
image-forming pathways. Nonvisual photoreception regulates numerous biological systems …

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