Circadian rhythm of plasma 11-hydroxycorticosteroids in psychiatric disorders.

Circadian rhythms in plasma concentration of 11-hydroxycorticosteroids in men working on night shift and in permanent night workers.

Circadian excretory rhythms in night workers.

Conroy, R. T. W. L., Elliott, A. L., and Mills, J. N. (1970). Brit. J. industr. Med., 27, 356-363. Circadian excretory rhythms in night workers. Urine samples have been collected from day and night shift workers in a light engineering factory over periods of 24 or 48 hours during which blood was also collected for determination of plasma 11-hydroxycorticosteroids (11-OHCS). Different subjects d...

Determination of adrenal response after oral administration of multiple doses of methylprednisolone.

ORMAL cortisol production by the adrenals has a circadian rhythm, and many studies1-6 have shown a variation of plasma cortisol with the time of day. Migeon et al.7 showed that the diurnal variation of plasma levels of 17-hydroxycorticosteroids in night workers and blind persons was the same as that in normal subjects. Hellman et al.8 showed that cortisol was secreted intermittently rather than...

Platelet serotonin content and free and total plasma tryptophan in healthy volunteers during 24 hours.

The determination of platelet serotonin (5-HT) and plasma tryptophan concentrations is useful in the diagnosis, investigation of etiologies, and treatment of psychiatric disorders. To determine the usual circadian variations in platelet 5-HT and free and total tryptophan concentrations, we measured these variables during 24 h at 1-h intervals and every 30 min from 2000 to 0800 in seven clinical...

Effects of Circadian Rhythm on Physical and physiological Performance of Military forces- Narrative Review

The 2017 Nobel Prize for medicine was awarded the biological clock Scientist, which shows the importance of this phenomenon in the life of living organisms. The circadian Rhythm (CR) through the created internal “clock” is responsible for regulating the daily performance of different organs of the body. The central body clock is the key factor to creating and maintaining this CR. External optic...