Orexin and sleep quality in anorexia nervosa: Clinical relevance and influence on treatment outcome

Sarah Sauchelli, Susana Jiménez-Murcia, Isabel Sánchez, Nadine Riesco, Nuria Custal, Jose C. Fernández-García, Lourdes Garrido-Sánchez, Francisco J. Tinahones, Howard Steiger, Mimi Israel, Rosa M. Baños, Cristina Botella, Rafael de la Torre, Jose M. Fernández-Real, Francisco J. Ortega, Gema Frühbeck, Roser Granero, Salome Tárrega, Ana B. Crujeiras, Amaia RodríguezXavier P. Estivill, Jacques S. Beckmann, Felipe F. Casanueva, Jose M. Menchón, Fernando Fernández-Aranda

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Background and aims: Orexins/hypocretins are orexigenic peptides implicated in the regulation of feeding behavior and the sleep/wake cycle. Little is known about the functioning of these peptides in anorexia nervosa (AN). The aims of the current study were to evaluate the extent to which orexin-might be linked to sleep and treatment outcome in AN. Method: Fasting plasma orexin-concentrations were measured in 48 females with AN at the start of a day hospital treatment and in 98 normal-eater/healthy-weight controls. The Pittsburgh Sleep Quality Index was administered at the beginning of the treatment as a measure of sleep quality. Other psychopathological variables were evaluated with the Symptom Checklist-Revised (SCL90R) and the Eating Disorder Inventory-(EDI). Patients were assessed at the start and end of treatment by means of commonly used diagnostic criteria and clinical questionnaires. Results: The AN patients presented more sleep disturbances and poorer overall sleep quality than did the healthy controls (= .026) but there were no global differences between groups in plasma orexin-concentrations (= .071). In the AN sample, orexin-concentrations were associated with greater sleep disturbances (|r| = .30), sleep inefficiency (|r| = .22) and poorer overall sleep (|r| = .22). Structural Equation Modeling (SEM) showed that both elevated orexin-concentrations and inadequate sleep predicted poorer treatment outcome. Conclusion: Plasma orexin-concentrations contribute to poor sleep quality in AN, and both of these variables are associated with therapy response.

Original languageEnglish
Pages (from-to)102-108
Number of pages7
JournalPsychoneuroendocrinology
Volume65
DOIs
Publication statusPublished - 1 Mar 2016
Externally publishedYes

    Fingerprint

Keywords

  • Anorexia nervosa
  • Orexin-A
  • Partial hospitalization
  • Sleep
  • Treatment outcome

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism
  • Psychiatry and Mental health
  • Biological Psychiatry
  • Endocrine and Autonomic Systems

Cite this

Sauchelli, S., Jiménez-Murcia, S., Sánchez, I., Riesco, N., Custal, N., Fernández-García, J. C., Garrido-Sánchez, L., Tinahones, F. J., Steiger, H., Israel, M., Baños, R. M., Botella, C., de la Torre, R., Fernández-Real, J. M., Ortega, F. J., Frühbeck, G., Granero, R., Tárrega, S., Crujeiras, A. B., ... Fernández-Aranda, F. (2016). Orexin and sleep quality in anorexia nervosa: Clinical relevance and influence on treatment outcome. Psychoneuroendocrinology, 65, 102-108. https://doi.org/10.1016/j.psyneuen.2015.12.014