Synchronizing circadian (24 h) rhythms in physiology and behavior with the environmental
light-dark cycle is critical for maintaining optimal health. Dysregulation of the circadian …

The discovery of a third type of photoreceptors in the mammalian retina, intrinsically
photosensitive retinal ganglion cells (ipRGCs), has had a revolutionary impact on …

Publisher Summary This chapter discusses the clinical biochemistry and hematology of the
rabbit (Oryctolagus cuniculus), guinea pig (Cavia porcellus), hamster (Mesocricetus …

Circadian rhythms influence most of our life activities, notably getting up and going to sleep
every day. The new edition of this book delves into the mechanisms surrounding how these …

Jet lag encompasses a range of psycho-and physiopathological symptoms that arise from
temporal misalignment of the endogenous circadian clock with external time. Repeated jet …

Mammalian circadian organization is governed by pacemaker neurons in the brain that
communicate with oscillators in peripheral tissues. Adrenal glucocorticoids are important …

This review consolidates research employing human correlational and experimental work
across brain and body with experimental animal models to provide a more complete …

Background The orexins (hypocretins) are a family of peptides found primarily in neurons in
the lateral hypothalamus. Although the orexinergic system is generally thought to be the …

The circadian system consists of individual cellular clocks. It organizes and synchronizes
biochemical and physiological processes in order to optimally adapt an organism to its …

Previous studies have demonstrated a positive correlation between glucocorticoid levels
and circadian reentrainment time following a shift in the light: dark (LD) cycle. We conducted …