Cancer Causes & Control

, Volume 17, Issue 4, pp 583–589

Melatonin Treatment in Obese Patients with Childhood Craniopharyngioma and Increased Daytime Sleepiness

  • Hermann L. Müller
  • Georg Handwerker
  • Ursel Gebhardt
  • Andreas Faldum
  • Angela Emser
  • Reinhard Kolb
  • Niels Sörensen
Special Section on Cancer and Rhythm Original Paper

Abstract

Craniopharyngioma is a rare dysontogenetic benign tumor. Patients frequently suffer from endocrine deficiencies, sleep disturbances and obesity due to pituitary and hypothalamic lesions. A self-assessment daytime sleepiness questionnaire (German version of the Epworth Sleepiness Scale [ESS]) was used to evaluate 79 patients with childhood craniopharyngioma. Because hypothalamic lesions may explain daytime sleepiness in craniopharyngioma patients, salivary melatonin and cortisol concentrations were examined in severely obese (BMI≥4SD) and non severely obese (BMI<4SD) craniopharyngioma patients (n=79), patients with hypothalamic pilocytic astrocytoma (n=19), and control subjects (n=30). Using a general linear model procedure analyzing the influence of BMI and tumor diagnosis on diurnal salivary melatonin we found that morning salivary melatonin levels were related to BMI (F test: p-value=0.004) and tumor diagnosis (F-test: p-value=0.032). Also for nighttime salivary melatonin levels significant relations with BMI (p-value in F-test: <0.001) and tumor diagnosis (p-value in F-test: 0.025) were detectable. Melatonin concentrations in saliva of craniopharyngioma patients collected at nighttime or in the morning showed a negative correlation (Spearman’s rho: −0.42; p=0.001; Spearman’s rho: −0.31; p=0.020) with the patient’s ESS score. Severely obese craniopharyngioma patients and severely obese hypothalamic tumor patients had similar patterns of melatonin secretion. Differences in terms of diurnal salivary cortisol concentrations were not detectable when patient groups and controls were compared. As decreased nocturnal melatonin levels were associated with increased daytime sleepiness, BMI and hypothalamic tumor diagnosis, we initiated an experimental melatonin substitution in 10 adult obese patients (5f/5m) with childhood craniopharyngioma. In all 10 patients with childhood craniopharyngioma the degree of daytime sleepiness significantly improved based on activity diaries, ESS, self assessment questionnaires and actimetry. We speculate that hypothalamic lesions might be responsible for both obesity and daytime sleepiness. As first experiences with experimental melatonin substitution were promising, further randomized double-blinded studies on the beneficial effects of melatonin substitution on daytime sleepiness and weight control in these patients are warranted.

Keywords

Cortisol Craniopharyngioma Daytime sleepiness Melatonin Sleep disorders Saliva 

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Copyright information

© Springer 2006

Authors and Affiliations

  • Hermann L. Müller
    • 1
  • Georg Handwerker
    • 2
  • Ursel Gebhardt
    • 1
  • Andreas Faldum
    • 3
  • Angela Emser
    • 3
  • Reinhard Kolb
    • 1
  • Niels Sörensen
    • 4
  1. 1.Department of Pediatrics, Children’s HospitalZentrum für Kinder- und Jugendmedizin, Klinikum Oldenburg gGmbHOldenburgGermany
  2. 2.Department of PediatricsUniversity Hospital WürzburgWürzburgGermany
  3. 3.Institute for Medical Biometry, Epidemiology and InformaticsUniversity of MainzMainzGermany
  4. 4.Department of Pediatric NeurosurgeryUniversity HospitalWürzburgGermany

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