Fish have evolved a biological clock to cope with environmental cycles, so they display
circadian rhythms in most physiological functions including stress response. Photoperiodic …

The pineal hormone, melatonin (N-acetyl-5-methoxytryptamine), shows potent receptor-
dependent and-independent actions, which participate in blood pressure regulation. The …

Results We have reviewed physiological information of melatonin and DMT, anatomical,
histological and histopathological information on the pineal gland and its role in endocrine …

Elevated heart rate is a risk factor for cardiovascular and all‐cause mortalities in the general
population and various cardiovascular pathologies. Insufficient heart rate decline during the …

Several severe stressful situations, eg, natural disaster, infectious disease out break, and
mass casualty, are known to cause anxiety, depression and cognitive impairment, and …

Chronic exposure to light at night, as in shift work, alters biological clocks (chronodisruption),
negatively impacting pregnancy outcome in humans. Actually the interaction of maternal and …

The physiological crosstalk between glucocorticoid and melatonin maintains neuronal
homeostasis in regulating circadian rhythms. However, the stress-inducing level of …

Background Melatonin is a key hormone in regulation of circadian rhythms, and involved in
many rhythmic functions, such as feeding and locomotor activity. Melatonin reportedly …

Melatonin, the hormone of circadian rhythm regulation, is involved in the modulation of
mitochondrial activity through its antioxidant and anti-inflammatory properties. Alteration of …

Chronic stress can impair brain functions and play a well-known role in the development of
stress-related disorders such as anxiety. Melatonin (Mel) is a neurohormone which regulate …