title: Brain metabolic alterations in Cushing's syndrome as monitored by proton magnetic resonance spectroscopy.
abstract: Proton magnetic resonance spectroscopy ((1)H MRS) was used to evaluate changes in cerebral metabolites in 13 patients with Cushing's syndrome (including seven with pituitary corticotroph adenomas and six with primary adrenal disease) as compared to 40 normal subjects. Data were recorded in the frontal, thalamic and temporal areas; quantification of the MRS signals demonstrated a statistically significant decrease of the Cho/Cr ratio in the frontal and thalamic areas but not in the temporal area for patients with Cushing's syndrome. The largest decrease in Cho/Cr was measured in the thalamic area of patients with a Cushing's syndrome secondary to an adrenal disease. No statistically significant changes in the NAA/Cr ratio were measured in any of the areas studied. These results suggest that the quantification of choline levels could be helpful for monitoring the cerebral metabolite alterations in patients with hypercortisolism.
authors.affiliation: Département de Radiologie, Hôpital Saint-Luc du CHUM, 1058 St-Denis, Montréal, Québec, Canada H2X 3J4.
authors.forename: A
authors.initials: A
authors.lastname: Khiat
authors.forename: C
authors.initials: C
authors.lastname: Bard
authors.forename: A
authors.initials: A
authors.lastname: Lacroix
authors.forename: J
authors.initials: J
authors.lastname: Rousseau
authors.forename: Y
authors.initials: Y
authors.lastname: Boulanger
mesh_terms: D000328:Adult; D001224:Aspartic Acid / Q000031:analogs & derivatives / Q000378:metabolism; D001921:Brain / Q000378:metabolism*; D002794:Choline / Q000378:metabolism; D003401:Creatine / Q000378:metabolism; D003480:Cushing Syndrome / Q000378:metabolism*; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008875:Middle Aged; D010725:Phosphocreatine / Q000378:metabolism; D011522:Protons; D011965:Receptors, Glucocorticoid / Q000378:metabolism
chemical_list: D011522:Protons; D011965:Receptors, Glucocorticoid; D010725:Phosphocreatine; D001224:Aspartic Acid; C000179:N-acetylaspartate; D003401:Creatine; D002794:Choline; D006854:Hydrocortisone