Circadian clocks maintain periodicity in internal cycles of behavior, physiology, and
metabolism, enabling organisms to anticipate the 24-h rotation of the Earth. In mammals …

The classic view of circadian timing in mammals emphasizes a light-responsive 'master
clock'within the hypothalamus which imparts temporal information to the organism. Recent …

Daily rotation of the Earth on its axis and yearly revolution around the Sun impose to living
organisms adaptation to nyctohemeral and seasonal periodicity. Terrestrial life forms have …

Circadian clocks respond to environmental time cues to coordinate 24-hour oscillations in
almost every tissue of the body. In the breast, circadian clocks regulate the rhythmic …

Although circadian rhythms in mammalian physiology and behavior are dependent upon a
biological clock in the suprachiasmatic nuclei (SCN) of the hypothalamus, the molecular …

The circadian clock is an endogenous time keeping system shared by most organisms. In
mammals, a master pacemaker in the hypothalamus orchestrates temporal alignment of …

Medroxyprogesterone acetate (MPA) and dydrogesterone (DDG) are synthetic progestins
widely used in human and veterinary medicine. Although aquatic organisms are exposed to …

Abstract REV-ERBα and REV-ERBβ nuclear receptors regulate several physiological
processes, including circadian rhythm and metabolism. A previous study reported the REV …

The circadian system synchronizes behavioral and physiologic processes with daily
changes in the external light–dark cycle, optimizing energetic cycles with the rising and …

Objective: Circadian rhythms are intrinsic timekeeping mechanisms that allow for adaptation
to cyclic environmental changes. Increasing evidence suggests that circadian rhythms may …