STUDY OBJECTIVES: Obesity is a common feature of narcolepsy. In addition, an increased occurrence of non-insulin dependent diabetes has been reported. So far, it is not known whether glucose metabolism in narcolepsy is disturbed due to, or independently of obesity. DESIGN: Case-control study. SETTING: Sleep medicine clinic at a research institute. PATIENTS: We studied 17 patients with narcolepsy/cataplexy compared to 17 healthy controls matched for age, sex, and body mass index (BMI). INTERVENTIONS: A 75-g oral glucose tolerance test was performed. MEASUREMENTS: Glucose tolerance was determined by computing plasma glucose curve following oral glucose challenge for 240 minutes; insulin sensitivity and insulin secretion by homeostasis model assessment and minimal model analysis. RESULTS: Standard outcome measures and indices of the oral glucose tolerance test did not differ between the patient group and the group of control subjects. CONCLUSIONS: In this study, no clinically relevant pathologic findings in the glucose metabolism of narcoleptic patients compared to weight matched controls were found. Thus, narcolepsy is unlikely to be a risk factor per se for impaired glucose tolerance or diabetes.
STUDY OBJECTIVES:Obesity is a common feature of narcolepsy. In addition, an increased occurrence of non-insulin dependent diabetes has been reported. So far, it is not known whether glucose metabolism in narcolepsy is disturbed due to, or independently of obesity. DESIGN: Case-control study. SETTING: Sleep medicine clinic at a research institute. PATIENTS: We studied 17 patients with narcolepsy/cataplexy compared to 17 healthy controls matched for age, sex, and body mass index (BMI). INTERVENTIONS: A 75-g oral glucose tolerance test was performed. MEASUREMENTS: Glucose tolerance was determined by computing plasma glucose curve following oral glucose challenge for 240 minutes; insulin sensitivity and insulin secretion by homeostasis model assessment and minimal model analysis. RESULTS: Standard outcome measures and indices of the oral glucose tolerance test did not differ between the patient group and the group of control subjects. CONCLUSIONS: In this study, no clinically relevant pathologic findings in the glucose metabolism of narcolepticpatients compared to weight matched controls were found. Thus, narcolepsy is unlikely to be a risk factor per se for impaired glucose tolerance or diabetes.
Authors: J Hara; C T Beuckmann; T Nambu; J T Willie; R M Chemelli; C M Sinton; F Sugiyama; K Yagami; K Goto; M Yanagisawa; T Sakurai Journal: Neuron Date: 2001-05 Impact factor: 17.173
Authors: H Tsuneki; S Murata; Y Anzawa; Y Soeda; E Tokai; T Wada; I Kimura; M Yanagisawa; T Sakurai; T Sasaoka Journal: Diabetologia Date: 2008-02-07 Impact factor: 10.122
Authors: Galit L Dunietz; Giancarlo Vanini; Carol Shannon; Louise M O'Brien; Ronald D Chervin Journal: Sleep Med Rev Date: 2020-03-17 Impact factor: 11.609
Authors: Claire E H M Donjacour; N Ahmad Aziz; Sebastiaan Overeem; Andries Kalsbeek; Hanno Pijl; Gert Jan Lammers Journal: Sleep Date: 2014-04-01 Impact factor: 5.849