1. Active cushing syndrome patients have increased ectopic fat deposition and bone marrow fat content compared to cured patients and healthy subjects: a pilot 1H-MRS study
- Author
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Thierry Brue, T. Graillon, F Maurice, C. Vincentelli, E Jouve, Frederic Castinetti, Bénédicte Gaborit, P. Cristofari, Frank Kober, Y. Lefur, C Chagnaud, Lauriane Pini, Anne Dutour, H. Dufour, Monique Bernard, R Fernandez, I. Abdesselam, Centre recherche en CardioVasculaire et Nutrition (C2VN), Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de résonance magnétique biologique et médicale (CRMBM), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS), Hôpital de la Timone [CHU - APHM] (TIMONE), Columbia University [New York], CIC-CPCET, Hôpital de la Conception [CHU - APHM] (LA CONCEPTION ), Aix Marseille Univ, INSERM, Marseille Medical Genetics, U1251, Marseille, France., Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research (C2VN), Marseille medical genetics - Centre de génétique médicale de Marseille (MMG), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Hôpital de la Conception [CHU - APHM] (LA CONCEPTION)
- Subjects
Adult ,Male ,medicine.medical_specialty ,[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging ,Proton Magnetic Resonance Spectroscopy ,Endocrinology, Diabetes and Metabolism ,Osteoporosis ,Glucocorticoids/adverse effects ,Adipose tissue ,030209 endocrinology & metabolism ,Gastroenterology ,030218 nuclear medicine & medical imaging ,Bone remodeling ,03 medical and health sciences ,Cushing syndrome ,Absorptiometry, Photon ,0302 clinical medicine ,Endocrinology ,Cushing Syndrome/complications ,Bone Density ,Bone Marrow ,Internal medicine ,medicine ,Humans ,Femur ,Adipose tissue/metabolism ,Cushing Syndrome ,Adiposity ,Femoral neck ,Lumbar Vertebrae ,Bone marrow fat ,Femur Neck ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,3. Good health ,Cross-Sectional Studies ,medicine.anatomical_structure ,Adipose Tissue ,Female ,Bone marrow ,business ,Glucocorticoid ,medicine.drug - Abstract
Objective Glucocorticoid excess is one of the most important causes of bone disorders. Bone marrow fat (BMF) has been identified as a new mediator of bone metabolism. Cushing syndrome (CS) is a main regulator of adipose tissue distribution but its impact on BMF is unknown. The objective of the study was to evaluate the effect of chronic hypercortisolism on BMF. Design This was a cross-sectional study. Seventeen active and 17 cured ACTH-dependent CS patients along with 17 controls (matched with the active group for age and sex) were included. Methods The BMF content of the femoral neck and L3 vertebrae were measured by 1H-MRS on a 3-Tesla wide-bore magnet. Bone mineral density (BMD) was evaluated in patients using dual-energy X-ray absorptiometry. Results Active CS patients had higher BMF content both in the femur (82.5 ± 2.6%) and vertebrae (70.1 ± 5.1%) compared to the controls (70.8 ± 3.6%, P = 0.013 and 49.0 ± 3.7% P = 0.005, respectively). In cured CS patients (average remission time of 43 months), BMF content was not different from controls at both sites (72.3 ± 2.9% (femur) and 46.7% ± 5.3% (L3)). BMF content was positively correlated with age, fasting plasma glucose, HbA1c, triglycerides and visceral adipose tissue in the whole cohort and negatively correlated with BMD values in the CS patients. Conclusions Accumulation of BMF is induced by hypercortisolism. In remission patients, BMF reached values of controls. Further studies are needed to determine whether this increase in marrow adiposity in CS is associated with bone loss.
- Published
- 2018