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hypothalamus

  • RESEARCH ARTICLE
    Ambient temperature affects multiple drivers of physiology and behaviour: adaptation for timely departure of obligate spring migrants
    Sayantan Sur, Khushboo Chaturvedi, Aakansha Sharma, Shalie Malik, Sangeeta Rani, Vinod Kumar
    Journal of Experimental Biology 2020 223: jeb236109 doi: 10.1242/jeb.236109 Published 21 December 2020

    Editor's choice: Songbirds use temperature in the behavioral decision of when to migrate from wintering areas. Transcriptional responsiveness to temperature is a significant component of the overall adaptive strategy for spring migration.

  • RESEARCH ARTICLE
    Oral and pre-absorptive sensing of amino acids relates to hypothalamic control of food intake in rainbow trout
    Sara Comesaña, Marta Conde-Sieira, Cristina Velasco, José L. Soengas, Sofia Morais
    Journal of Experimental Biology 2020 223: jeb221721 doi: 10.1242/jeb.221721 Published 6 September 2020

    Summary: Pre-absorptive sensing of amino acids, at least partially mediated by taste-signalling mechanisms, elicits a satiety signal that in the hypothalamus is translated into changes in cellular signalling and neuropeptides regulating food intake in fish.

  • RESEARCH ARTICLE
    The long-chain fatty acid receptors FFA1 and FFA4 are involved in food intake regulation in fish brain
    Cristina Velasco, Marta Conde-Sieira, Sara Comesaña, Mauro Chivite, Adrián Díaz-Rúa, Jesús M. Míguez, José L. Soengas
    Journal of Experimental Biology 2020 223: jeb227330 doi: 10.1242/jeb.227330 Published 3 September 2020

    Summary: FFA1 and FFA4 contribute to the detection of fatty acids in fish brain and are involved in food intake regulation through mechanisms not exactly comparable to those known in mammals.

  • RESEARCH ARTICLE
    In vitro insulin treatment reverses changes elicited by nutrients in cellular metabolic processes that regulate food intake in fish
    Ayelén M. Blanco, Juan I. Bertucci, José L. Soengas, Suraj Unniappan
    Journal of Experimental Biology 2020 223: jeb213454 doi: 10.1242/jeb.213454 Published 23 April 2020

    Summary: Insulin does not directly modulate glucose- and fatty acid-sensing systems in the rainbow trout hypothalamus and hindbrain, but counteracts the changes elicited by nutrients.

  • RESEARCH ARTICLE
    Eccentric resistance training and β-hydroxy-β-methylbutyrate free acid affects muscle PGC-1α expression and serum irisin, nesfatin-1 and resistin in rats
    Hossein Shirvani, Saleh Rahmati-Ahmadabad, David Robert Broom, Reza Mirnejad
    Journal of Experimental Biology 2019 222: jeb198424 doi: 10.1242/jeb.198424 Published 29 May 2019

    Summary: Eccentric resistance training and HMB-FA supplementation may induce crosstalk between peptide release from other tissues and increase maximal muscle strength; the combination of the two interventions has a greater effect than either does alone.

  • RESEARCH ARTICLE
    Ceramide counteracts the effects of ghrelin on the metabolic control of food intake in rainbow trout
    Cristina Velasco, Guillermo Moreiras, Marta Conde-Sieira, José M. Leao, Jesús M. Míguez, José L. Soengas
    Journal of Experimental Biology 2017 220: 2563-2576; doi: 10.1242/jeb.159871

    Summary: The effects of ghrelin on metabolic control of food intake in rainbow trout are counteracted by ceramide.

  • RESEARCH ARTICLE
    Dietary fat alters the response of hypothalamic neuropeptide Y to subsequent energy intake in broiler chickens
    Xiao J. Wang, Shao H. Xu, Lei Liu, Zhi G. Song, Hong C. Jiao, Hai Lin
    Journal of Experimental Biology 2017 220: 607-614; doi: 10.1242/jeb.143792

    Summary: Hypothalamus-based self-adjustment in response to dietary fat can vary among lean and fat individuals, and depends upon whole-body energy reserves and feeding experience.

  • SHORT COMMUNICATION
    Dopaminergic inhibition of gonadotropin-releasing hormone neurons in the cichlid fish Astatotilapia burtoni
    Astra S. Bryant, Anna K. Greenwood, Scott A. Juntti, Allie E. Byrne, Russell D. Fernald
    Journal of Experimental Biology 2016 219: 3861-3865; doi: 10.1242/jeb.147637

    Summary: Dopamine controls reproduction at multiple sites along the hypothalamic-pituitary–gonadal axis; in teleost fish, D2 receptors drive inhibition of hypothalamic GnRH1 neurons, a mechanism likely to be conserved across vertebrates.

  • RESEARCH ARTICLE
    Actions of sex steroids on kisspeptin expression and other reproduction-related genes in the brain of the teleost fish European sea bass
    M. V. Alvarado, A. Servili, G. Molés, M. M. Gueguen, M. Carrillo, O. Kah, A. Felip
    Journal of Experimental Biology 2016 219: 3353-3365; doi: 10.1242/jeb.137364

    Summary: Kisspeptins are attributed to be key factors in mediating gonadal steroid feedback in mammalian hypothalamus and in the teleost fish sea bass, suggesting that this property is conserved across vertebrates.

  • RESEARCH ARTICLE
    In vitro evidence supports the presence of glucokinase-independent glucosensing mechanisms in hypothalamus and hindbrain of rainbow trout
    Cristina Otero-Rodiño, Cristina Velasco, Rosa Álvarez-Otero, Marcos A. López-Patiño, Jesús M. Míguez, José L. Soengas
    Journal of Experimental Biology 2016 219: 1750-1759; doi: 10.1242/jeb.137737

    Summary: The presence and activity of glucokinase-independent glucosensing mechanisms in fish brain regions provide new and relevant information regarding metabolic regulation of food intake and counter-regulatory mechanisms to restore plasma levels of metabolites in fish.

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