The thermogenic and metabolic responses to photoperiod manipulations in Apodemus chevrieri

Zhu, Weiming; Lin, Zhihong; Wang, Zhengkun

doi:10.1163/15707563-00002408

Cited by 3 publications

(3 citation statements)

References 60 publications

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“…Serum leptin decreased during short photoperiod acclimation, and increased during the long photoperiod course in A. draco 71 . There are different responses to short photoperiod, E. miletus and A. chevrieri appear a lower serum leptin and body mass over 28 days of acclimation during short photoperiods than in long photoperiods 72 73 . However, the increase in serum leptin was associated with increasing body mass under short photoperiod acclimated D. groenlandicus 74 .…”

Section: Discussionmentioning

confidence: 94%

Role of thermal physiology and bioenergetics on adaptation in tree shrew (Tupaia belangeri): the experiment test

Lin

Yang

Wang

et al. 2017

Sci Rep

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Ambient conditions, as temperature and photoperiod, play a key role in animals' physiology and behaviors. To test the hypothesis that the maximum thermal physiological and bioenergetics tolerances are induced by extreme environments in Tupaia belangeri. We integrated the acclimatized and acclimated data in several physiological, hormonal, and biochemical markers of thermogenic capacity and bioenergetics in T. belangeri. Results showed that T. belangeri increased body mass, thermogenesis capacity, protein contents and cytochrome c oxidase (COX) activity of liver and brown adipose tissue in winter-like environments, which indicated that temperature was the primary signal for T. belangeri to regulate several physiological capacities. The associated photoperiod signal also elevated the physiological capacities. The regulations of critical physiological traits play a primary role in meeting the survival challenges of winter-like condition in T. belangeri. Together, to cope with cold, leptin may play a potential role in thermogenesis and body mass regulation, as this hormonal signal is associated with other hormones. The strategies of thermal physiology and bioenergetics differs between typical Palearctic species and the local species. However, the maximum thermal physiology and bioenergetic tolerance maybe is an important strategy to cope with winter-like condition of T. belangeri.Phenotypic plasticity is the ability of individuals to change phenotype with fluctuations in climate conditions, and responses mainly include aspects of morphology, physiology, behavior, and phenology 1 . The energy metabolism of small mammals may be the most suitable field for studying phenotypic plasticity changes 2 . The variation in physiological traits in individuals is an important response to the environment 1,3,4 . Climate conditions, including temperature and photoperiod, play a key role in seasonal variation in body mass, food intake, body fat mass, and other traits 5-9 for many species inhabiting in temperature zone, especially mammals. However, different species show different responses to climate conditions, such as Phodopus sungorus . Small mammals' response to seasonal variations such as cold or short photoperiods, by regulating physiological strategies, such as body mass and thermogenic capacity (e.g., nonshivering thermogenesis, NST) [6][7][8][12][13][14][15][16][17][18][19][20][21][22][23] . The brown adipose tissue (BAT) is a specialized organ that is involved in NST [24][25][26] , and in increased energy expenditure involves the hypothalamic-pituitary-thyroid axis and sympathetic nervous system 27 . The NST capacity entirely depends on uncoupling protein 1(UCP1) in BAT, a 32-kD carrier protein located in the inner membrane of mitochondria, that separates oxidative phosphorylation from adenosine triphosphate synthesis, with energy dissipated as heat 27

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Section: Discussionmentioning

confidence: 94%

Role of thermal physiology and bioenergetics on adaptation in tree shrew (Tupaia belangeri): the experiment test

Lin

Yang

Wang

et al. 2017

Sci Rep

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“…Sustained thermogenesis led to compensatory hyperphagia and body fat loss (Zhu et al, 2013). During photoperiod acclimation, Chevrier's field mice regulated serum leptin levels to adapt to the ambient environment, as has Figure 2.…”

Section: Discussionmentioning

confidence: 98%

“…Originating from Europe or the Asian brink close to Europe, they migrated west in recent years (Miclke, 1989), inhabiting the Hengduan Mountain Region in the southwest of China. It has been reported that serum leptin is involved in the energy intake regulation and thermoregulation in A. chevrieri under cold acclimation (Zhu et al, 2011b), and that changes in body mass and thermogenic capacity in SD and LD photoperiods might be mediated by leptin (Zhu et al, 2013). But how does leptin mediate the changes in body mass and thermogenic capacity by the hypothalamus during varying photoperiods?…”

Section: Introductionmentioning

confidence: 99%

The role of photoperiod on the expression of hypothalamic genes regulating appetite in Chevrier’s field mouse (Apodemus chevrieri)

et al. 2015

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The hypothalamus and leptin play a key role in the regulation of food intake. The present study investigated the effects of 4 weeks of short-or long-photoperiod on serum leptin levels and food intake in relation to mRNA expression levels of neuropeptide Y, agouti-related protein, pro-opiomelanocortin, and cocaine-and amphetamine-regulated transcript in the hypothalamus of Chevrier's field mouse (Apodemus chevrieri). There was a significant difference in body fat mass, food intake and neuropeptide Y mRNA expression between the two groups, but serum leptin level, agouti-related protein, pro-opiomelanocortin, and cocaine-and amphetamine-regulated transcript mRNA expression in the hypothalamus were not difference between the two groups. The elevation of neuropeptide Y mRNA regulated neuropeptides in the hypothalamus suggests a physiological role of neuroendocrine factors in food intake during the different photoperiod. We conclude that leptin may be involved in energy balance and body mass regulation.

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Variations of body mass and thermogenesis properties in Eothenomys olitor during cold acclimatization

Yang

Chunyan

Jia³

et al. 2021

Animal Biol.

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The set-point hypothesis states that there is a biological control method in mammals that actively regulates weight toward a predetermined set weight for each individual, which may occur by regulation of energy intake or energy expenditure. In order to investigate the effects of low temperature on body mass regulation in Eothenomys olitor, body mass, body fat mass, food intake, resting metabolic rate (RMR), non-shivering thermogenesis (NST), serum leptin levels, morphology, biochemical indexes of liver and brown adipose tissue (BAT) and hypothalamic neuropeptide genes expression were measured during cold acclimatization. The results showed that there was no significant difference in body mass, but food intake, RMR and NST increased during cold acclimatization. Cytochrome c oxidase (COX) and α-glycerophosphate oxidase (α-GPO) activities in liver and BAT were significantly enhanced during cold acclimatization, and triiodothyronine (T3) and thyroxine (T4) levels in serum were significantly higher than those in the control group. Serum leptin levels decreased after cold acclimatization. Low temperature significantly increased the expression of neuropeptide Y (NPY) and agouti-related peptide (AgRP), while it decreased cocaine- and amphetamine-regulated transcript peptide (CART) and pro-opiomelanocortin (POMC) expressions. All of the above results suggested that body mass in E. olitor can remain relatively stable at low temperature, which conforms to the ‘set-point hypothesis’. However, the species showed differences with sympatric species, such as E. miletus, Apodemus chevrieri and Tupaia belangeri. Moreover, E. olitor can cope with low temperature by increasing its metabolic rate and thermogenesis properties.

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The thermogenic and metabolic responses to photoperiod manipulations in Apodemus chevrieri

Cited by 3 publications

References 60 publications

Role of thermal physiology and bioenergetics on adaptation in tree shrew (Tupaia belangeri): the experiment test

Role of thermal physiology and bioenergetics on adaptation in tree shrew (Tupaia belangeri): the experiment test

The role of photoperiod on the expression of hypothalamic genes regulating appetite in Chevrier’s field mouse (Apodemus chevrieri)

Variations of body mass and thermogenesis properties in Eothenomys olitor during cold acclimatization

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