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Peptides v.88, 2017년, pp.32 - 36   SCI SCIE
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Phoenixin is negatively associated with anxiety in obese men

Hofmann, Tobias (Charité ); Weibert, Elena ( Center for Internal Medicine and Dermatology, Department for Psychosomatic Medicine ); Ahnis, Anne ( Charité ); Elbelt, Ulf (-Universitä ); Rose, Matthias (tsmedizin Berlin, Berlin, Germany ); Klapp, Burghard F. ( Charité ); Stengel, Andreas ( Center for Internal Medicine and Dermatology, Department for Psychosomatic Medicine );
  • 초록  

    Abstract Phoenixin was recently identified in the rat hypothalamus and initially implicated in reproductive functions. A subsequent study described an anxiolytic effect of the peptide. The aim of the study was to investigate a possible association of circulating phoenixin with anxiety in humans. We therefore enrolled 68 inpatients with a broad spectrum of psychometrically measured anxiety (GAD-7). We investigated men since a menstrual cycle dependency of phoenixin has been assumed. Obese subjects were enrolled since they often report psychological comorbidities. In addition, we also assessed depressiveness (PHQ-9) and perceived stress (PSQ-20). Plasma phoenixin levels were measured using a commercial ELISA. First, we validated the ELISA kit performing a spike-and-recovery experiment showing a variance of 6.7±8.8% compared to the expected concentrations over the whole range of concentrations assessed, while a lower variation of 1.6±0.8% was observed in the linear range of the assay (0.07–2.1ng/ml). We detected phoenixin in the circulation of obese men at levels of 0.68±0.50ng/ml. These levels showed a negative association with anxiety scores ( r = −0.259, p = 0.043), while no additional associations with other psychometric parameters were observed. In summary, phoenixin is present in the human circulation and negatively associated with anxiety in obese men, a population often to report comorbid anxiety. Highlights Phoenixin is a recently discovered peptide initially implicated in reproduction. Phoenixin was also shown to have an anxiolytic effect in mice. Phoenixin is detectable in the circulation in humans. Phoenixin shows a negative association with anxiety in obese men. Phoenixin might be an interesting target in the treatment of anxiety disorders.


  • 주제어

    Emotion .   Gut-brain axis .   Psychobiology .   Psychoneuroendocrine .   Psychosomatic.  

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