Now showing items 1-10 of 205
External temporal organization in biological rhythms
(Taylor & Francis LTDAbingdon, 2013-08-02)
This paper is intended as a proposition of a new concept in the field of chronobiology, External Temporal Organization, a notion complementary to that of the Internal Temporal Organization. We will try to explain the ...
Circadian rhythm of wrist temperature and night shift-work
(Taylor & Francis LtdAbingdonInglaterra, 2013)
Influences of sex and age on biological rhythms of serum lipids and lipoproteins
(ELSEVIER SCIENCE BV, 2009)
Background: Few studies have evaluated seasonal variations of biochemical parameters routinely analyzed in clinical laboratories. Rhythmic patterns for lipids and lipoproteins have been demonstrated and have been the object ...
Circadian rhythms of locomotor activity and hippocampal clock genes expression are dampened in vitamin A-deficient rats
(Elsevier Inc, 2014-04)
The main external time giver is the day-night cycle; however, signals from feeding and the activity/rest cycles can entrain peripheral clocks, such as the hippocampus, in the absence of light. Knowing that vitamin A and ...
Daily rhythm of salivary IL-1 beta, cortisol and melatonin in day and night workers
(IOS PRESSAMSTERDAM, 2012)
Shiftwork-induced sleep deprivation and circadian disruption probably leads to an increase in the production of cytokines and dysregulation of innate immune system, respectively. This project aims evaluating changes in ...
Longitudinal study of the spectral composition of behavioral rhythms in the rat
(Taylor & Francis Ltd, 2005-02-01)
Four. male Wistar rats were housed in pairs of siblings, on LD 12:12h and 22 degrees C + 2 degrees C. Food and water were provided ad libitum. Behavior was videotaped from the 1st to the 3rd month of life. In each age-bracket ...
Time for circadian rhythms: plants get synchronized
(Current Biology Ltd, 2009-10)
Most organisms adjust their physiology and metabolism in synchronization with the diurnal and seasonal time by using an endogenous mechanism known as circadian clock. In plants, light and temperature signals interact with ...
Serotonin and circadian rhythms
(Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio)Universidade de Brasília (UnB)Universidade de São Paulo (USP), 2010-12-01)
All mammal behaviors and functions exhibit synchronization with environmental rhythms. This is accomplished through an internal mechanism that generates and modulates biological rhythms. The circadian timing system, ...
Circadian and Ultradian rhythms of Water ingestion in ratsRitmos Circadianos y Ultradianos en la ingestión de agua en ratas
(Sociedad Mexicana de Análisis de la Conducta / Mexican Society of Behavior Analysis, 2011)
Biological rhythms of biochemical serum parameters in a Brazilian population: A three-year study
(Taylor & Francis IncPhiladelphiaEUA, 2005)