Circadian control of energy metabolism. (A) In plants, cyanobacteria, and fungi, energy is available during the light peri...
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Figura 1 ritmos circadianos

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Bela figura retratando a ciclicidade das vias metabólicas na obesidade.neurais

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Figura 1 ritmos circadianos

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  3. 3. Circadian control of energy metabolism. (A) In plants, cyanobacteria, and fungi, energy is available during the light period within the light/dark cycle, while in metazoa, alternating periods of sleep and wakefulness, closely associated with the light/dark cycle, impart cyclicity on feeding behavior and fuel utilization. (B) The master clock in the SCN sends signals to the extra-SCN regions, which in turn entrain peripheral tissues via hormonal, autonomic nervous system (ANS), and behavioral pathways in order to regulate peripheral clock control of fuel utilization and energy harvesting. Extra-SCN regions also regulate energy homeostasis by controlling cyclic energy intake and locomotor activity. Through regulation of food intake, physical activity, and metabolic processes, both brain and peripheral clocks contribute to long-term weight stability by maintaining a precise balance between energy intake and energy expenditure. A positive energy balance deposits stored energy mostly into adipose tissue, eading to obesity, while a negative energy balance results in leanness. BMR, basal metabolic rate.<br />
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