4.5 Article

Trajectory of leptin and leptin receptor in vertebrates: Structure, function and their regulation

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ELSEVIER SCIENCE INC
DOI: 10.1016/j.cbpb.2021.110652

关键词

Leptin; Leptin receptor; Physiology; Regulation; Vertebrates

资金

  1. Council of Scientific and Industrial Research, Government of India (CSIR-SRF) [09/045(1411)/2016-EMR-I]

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Leptin functions as an anorexigenic hormone in vertebrates, but there are contradictory observations in fishes regarding its levels during fasting and re-feeding. It also modulates metabolic functions in various animals, although further research is needed to fully understand its role in non-mammalian vertebrates.
The present review provides a comparative insight into structure, function and control of leptin system in fishes, herptiles, birds and mammals. In general, leptin acts as an anorexigenic hormone since its administration results in decrease of food intake in vertebrates. Nonetheless, functional paradox arises in fishes from contradictory observations on level of leptin during fasting and re-feeding. In addition, leptin is shown to modulate metabolic functions in fishes, reptiles, birds and mammals. Leptin also regulates reproductive and immune functions though more studies are warranted in non-mammalian vertebrates. The expression of leptin and its receptor is influenced by numerous factors including sex steroids, stress and stress-induced catecholamines and glucocorticoids though their effect in non-mammalian vertebrates is hard to be generalized due to limited studies.

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