Influence of long-term food restriction on sleep pattern in male rats

Alvarenga, Tathiana A.; Andersen, Mônica Levy; Papale, Ligia A.; Antunes, Isabela B.; Tufik, Sérgio

doi:10.1016/j.brainres.2005.07.024

Cited by 33 publications

(22 citation statements)

References 21 publications

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“…In the present study, activity was significantly higher in FD voles than in the control group on FD days; a similar result was found in mice (Sherwin 1998), which indicates that small mammals increase activity to search for food when the food is limited or unpredictable (Alvarenga et al 2005). But FD voles had a higher percentage of feeding behavior on ad libitum days, which suggests that while animals increase feeding behavior, they seem to reduce activity and energy expenditure to compensate for the shortage of food resources (Gursoy et al 2001).…”

Section: Behaviorsupporting

confidence: 88%

Effects of random food deprivation on body mass, behavior and serum leptin levels inEothenomys miletus(Mammalia: Rodentia: Cricetidae)

Zhu

Yuan

Zhang

et al. 2014

Italian Journal of Zoology

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The value of phenotypic plasticity in energy metabolism and behavioral patterns in response to variations of food availability was handled in adult male voles (Eothenomys miletus) acclimated to random food deprivation (FD) for 4 weeks. During this period, in which voles were fed ad libitum for a randomly assigned 3 days each week, changes in body mass, food intake, resting metabolic rate (RMR), non-shivering thermogenesis (NST) and serum leptin levels were measured. Behavioral observations were made to examine behavioral patterns including activity, feeding, grooming and resting behaviors. The results showed that food intake and gastrointestinal mass increased significantly, but RMR and NST decreased significantly in the FD group compared to the control group. Moreover, the FD group had a significantly higher percentage of feeding behavior and lower activity than those in control group. In addition, serum leptin levels were positively correlated with body fat mass, but showed no significant differences between FD and the control group. These results suggest that E. miletus can compensate for an unpredictable reduction of food availability by engaging in an energetic strategy related to food intake and a decrease in energy expenditure associated with RMR, NST plus general activity, together with the mobilization of body fat as well as the adjustment of the gastrointestinal tract, which consequently play an important role in adaptations to food shortage in unpredictable environments.

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Section: Behaviorsupporting

confidence: 88%

Effects of random food deprivation on body mass, behavior and serum leptin levels inEothenomys miletus(Mammalia: Rodentia: Cricetidae)

Zhu

Yuan

Zhang

et al. 2014

Italian Journal of Zoology

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“…The fact that the ad lib control and pair-fed to 3% alcohol in liquid diet had no differences in their sleep while they gained weight at significantly different rates, suggests rate of weight gain in and of itself does not account for any of the effects we observed. A possible reason for the increased total SWS in the pair-fed controls to the 6% alcohol in liquid diet could be that others have found that food restriction, specifically when access to food is restricted to just the dark period, does increase SWS in the dark period (Alvarenga et al, 2005). While the degree of decreased food consumption in our study is nowhere near that in the Alvarenga et al study (2005), the changes we observed in this control group relative to the others were also more modest than that observed by Alvarenga et al In spite of this change in the control group behavior, the alcohol treatment led to an even further increase in SWS in the light period.…”

Section: Discussionmentioning

confidence: 99%

Dose–response study of chronic alcohol induced changes in sleep patterns in rats

2008

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The goal of the present study was to determine an optimum exposure regimen for alterations in sleep induced by chronic alcohol treatments in rats. We used two different exposure routes (alcohol in water and alcohol in liquid diet at two different doses in each regimen (6% and 12% alcohol in water and 3% and 6% alcohol in liquid diet)). All treatments were for 6 weeks. We found the effects of the 6% and 12% in water and 3% in liquid diet to be very similar; all three produced increases in slowwave sleep (SWS) only in the dark period with no changes in rapid-eye-movement sleep (REMS). On the other hand 6% alcohol in liquid diet caused much more dramatic changes, with alterations in both SWS and REMS in both the dark and light periods. These animals spent less time in SWS and REMS during the light period but more time in SWS and REMS in the dark period. Additionally, the variation of slow-wave amplitude (SWA) across day and night in this group of alcoholic animals is blunted with the loss of the peak of SWA at the beginning of light onset compared to the other groups. We conclude that future alcohol treatment regimens used to investigate the effects of alcohol on sleep in adult rats should use an exposure protocol of at least 6 weeks with 6% alcohol in liquid diet.

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“…Hambly and Speakman (2005) calculated the energy expended on activity in MF1 mice and found a significantly decreased activity in restricted individuals compared with ad libitum controls, in which the restriction group decreased the energy expended on activity by 27.5%. In addition, the time spent in sleeping over a 24 h period increased significantly in FR rats (Alvarenga et al, 2005). However, caloric restriction caused an increased wheel-running activity in some rodents (Boakes and Dwyer, 1997;Sherwin, 1998).…”

Section: Introductionmentioning

confidence: 97%

“…FR has been reported to extend the life span in several animal species, and also to prevent obesity in many mammals including laboratory rodents, monkeys and even humans (Alvarenga et al, 2005;Kirkwood and Shanley, 2005;Mattison et al, 2003;Roth et al, 2001;Speakman and Hambly, 2007). So far, the effect of dietary restriction has been investigated extensively in rodents, although the responses in body mass, fat mass and body compositions to FR is still not clear (Ferguson et al, 2007(Ferguson et al, , 2008Gursoy et al, 2001;Hambly and Speakman, 2005;Hill et al, 1985;Kirkwood and Shanley, 2005;Liang and Zhang, 2006).…”

Section: Introductionmentioning

confidence: 98%

Trade-off between energy budget, thermogenesis and behavior in Swiss mice under stochastic food deprivation

Cao

Zhang

Zhao

2009

Journal of Thermal Biology

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Influence of long-term food restriction on sleep pattern in male rats

Cited by 33 publications

References 21 publications

Effects of random food deprivation on body mass, behavior and serum leptin levels inEothenomys miletus(Mammalia: Rodentia: Cricetidae)

Effects of random food deprivation on body mass, behavior and serum leptin levels inEothenomys miletus(Mammalia: Rodentia: Cricetidae)

Dose–response study of chronic alcohol induced changes in sleep patterns in rats

Trade-off between energy budget, thermogenesis and behavior in Swiss mice under stochastic food deprivation

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