Influence of scheduled restricted feeding on reentrainment of motor activity rhythm after a 6-h light-dark advance in rats.

Carneiro, Breno Tercio Santos; Araújo, John Fontenele

doi:10.3922/j.psns.2011.3.004

Cited by 10 publications

(9 citation statements)

References 39 publications

(52 reference statements)

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“…The identification of signals that are able to entrain the FEO may be relevant for manipulating circadian rhythms when considering the potential of scheduled feeding to manage circadian alterations (Ángeles-Castellanos, Amaya, Salgado-Delgado, Buijs, & Escobar, 2011;Carneiro & Araujo, 2011).…”

Section: Discussionmentioning

confidence: 99%

Daily anticipatory rhythms of behavior and body temperature in response to glucose availability in rats.

Carneiro

Fernandes

Medeiros

et al. 2012

Psychology & Neuroscience

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When food is available recurrently at a particular time of day, several species increase their locomotion in the hours that precede food delivery, a phenomenon called food anticipatory activity (FAA). In mammals, many studies have shown that FAA is driven by a food-entrained circadian oscillator (FEO) that is distinct from the light-entrained pacemaker in the suprachiasmatic nucleus of the hypothalamus. Few studies have investigated the effect of sugar ingestion on food anticipatory rhythms and the FEO. We aimed to extend the understanding of the role of glucose on the emergence of food anticipatory rhythms by investigating whether glucose ingestion is sufficient to produce daily food anticipation, reflected by motor activity and core body temperature rhythms. Under a 12 h/12 h light/dark cycle, chow-deprived rats had glucose solution available between Zeitgeber Time (ZT) 6 and ZT 9 for 10 days (glucose restriction group), whereas control animals had chow available within the same time window (chow restriction group). Animals in both groups exhibited anticipatory motor activity and body temperature around the fourth day of the scheduled food restriction. Glucose-fed rats ingested ~15 kcal on the days immediately before FAA emergence and reached an intake of ~20 kcal/day, whereas chow-fed rats ingested ~40 kcal/day. The glucose restriction group exhibited a pattern of food anticipation (activity and temperature) that was extremely similar to that observed in the chow restriction group. We conclude that glucose ingestion is a sufficient temporal cue to produce recurrent food anticipation, reflected by activity and temperature rhythms, in rats.

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Section: Discussionmentioning

confidence: 99%

Daily anticipatory rhythms of behavior and body temperature in response to glucose availability in rats.

Carneiro

Fernandes

Medeiros

et al. 2012

Psychology & Neuroscience

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“…Two studies examined the effect of scheduled feeding on re-entrainment of motor activity after a light–dark phase shift (Ángeles-Castellanos et al, 2011; Carneiro and Araujo, 2011), reporting that rats under a feeding schedule re-entrain faster to the new LD cycle. Ángeles-Castellanos et al (2011) showed that fast re-entrainment in scheduled fed animals is not due to a masking effect, but indeed is a result of an entrainment process.…”

Section: Possible Applications Of Feeding Regimensmentioning

confidence: 99%

Food entrainment: major and recent findings

Carneiro¹,

Araújo²

2012

Front. Behav. Neurosci.

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Mammals exhibit daily anticipatory activity to cycles of food availability. Studies on such food anticipatory activity (FAA) have been conducted mainly in nocturnal rodents. They have identified FAA as the behavioral output of a food entrained oscillator (FEO), separate of the known light entrained oscillator (LEO) located in the suprachiasmatic nucleus (SCN) of hypothalamus. Here we briefly review the main characteristics of FAA. Also, we present results on four topics of food anticipation: (1) possible input signals to FEO, (2) FEO substrate, (3) the importance of canonical clock genes for FAA, and (4) potential practical applications of scheduled feeding. This mini review is intended to introduce the subject of food entrainment to those unfamiliar with it but also present them with relevant new findings on the issue.

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“…These findings indicate that WR produces phase shifts only in the peripheral clocks of particular tissues. Other than WR, RF was reported to modify the rate of re-entrainment of behavior rhythm to a phase-shifted LD ( Angeles-Castellanos et al 2011) and the effects seem to be phase dependent (Carneiro & Araujo 2011). RF is known to induce the so-called prefeeding anticipatory increase in behaviors.…”

Section: Discussionmentioning

confidence: 99%

Mistimed wheel running interferes with re‐entrainment of circadian Per1 rhythms in the mouse skeletal muscle and lung

Yamanaka

Honma

2016

Genes to Cells

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Previously, we showed the acceleration of re-entrainment to 8-h phase-advanced light/dark cycles (LD) in the circadian Per1 expression rhythms of the mouse lung and skeletal muscle by 3-h wheel running (WR) at the beginning of shifted dark phase. In the present study, the effects of WR at the end of shifted dark phase were examined on the re-entrainment in mice. LD was advanced by shortening and was delayed by lengthening the first light period in the phase-advance and phase-delay protocol, respectively. Shifted LD was continued for 4 days, which was followed by constant darkness (DD). Per1 expression was measured in the cultured tissues obtained on the first day of DD from mice carrying a bioluminescence reporter of Per1 expression. In the phase-advance protocol, re-entrainment was not influenced by WR in any circadian rhythm examined. In the phase-delay protocol, re-entrainment of the circadian locomotor rhythm was not affected by WR. However, re-entrainment of circadian Per1 rhythm was significantly decelerated in the skeletal muscle and lung. These findings indicate that the effects of WR on re-entrainment depend on the time of day and the peripheral tissues. Mistimed WR interferes with re-entrainment of circadian rhythms in the lung and skeletal muscle.

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Influence of scheduled restricted feeding on reentrainment of motor activity rhythm after a 6-h light-dark advance in rats.

Cited by 10 publications

References 39 publications

Daily anticipatory rhythms of behavior and body temperature in response to glucose availability in rats.

Daily anticipatory rhythms of behavior and body temperature in response to glucose availability in rats.

Food entrainment: major and recent findings

Mistimed wheel running interferes with re‐entrainment of circadian Per1 rhythms in the mouse skeletal muscle and lung

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