title: Loss of bone mineral density in premenopausal women with systemic lupus erythematosus.
abstract: OBJECTIVE
  To evaluate bone mineral density (BMD) in premenopausal patients with systemic lupus erythematosus (SLE).
  
  
  METHODS
  We measured BMD by dual energy x ray absorptiometry at lumbar vertebrae L2-4 and at the right femoral neck in 74 premenopausal white patients (mean age 30.8 years) with SLE who were receiving glucocorticoid therapy, and in a control group.
  
  
  RESULTS
  The mean cumulative dose of prednisone was 32.5 (SD 28) g. The mean dose at the time of absorptiometry was 13.7 (6.9) mg. BMD was significantly reduced at the spine and at the femoral neck in SLE patients when compared with the control group: L2-4 = 0.943 (0.1) g/cm2 v 1.038 (0.1) g/cm2 (p < 0.001); femoral neck = 0.766 (0.09) g/cm2 v 0.864 (0.1) g/cm2 (p < 0.001). Nine patients (12.1%), but none of the control group, had a BMD less than the reference range.
  
  
  CONCLUSIONS
  BMD in premenopausal patients with SLE was less than that in a control group and less than the reference range of values defining the presence of osteoporosis in 12.1%. We did not find a relationship between BMD and either cumulative or baseline dose of corticosteroid therapy.
authors.affiliation: Internal Medicine Service, Hospital de Bellvitge Princeps d'Espanya, L'Hospitalet de Llobregat, Barcelona, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Formiga
authors.forename: I
authors.initials: I
authors.lastname: Moga
authors.forename: J M
authors.initials: JM
authors.lastname: Nolla
authors.forename: M
authors.initials: M
authors.lastname: Pac
authors.forename: F
authors.initials: F
authors.lastname: Mitjavila
authors.forename: D
authors.initials: D
authors.lastname: Roig-Escofet
mesh_terms: D000293:Adolescent; D000328:Adult; D015519:Bone Density / Q000187:drug effects / Q000502:physiology*; D004305:Dose-Response Relationship, Drug; D005260:Female; D005272:Femur Neck / Q000503:physiopathology; D006801:Humans; D008159:Lumbar Vertebrae / Q000503:physiopathology; D008180:Lupus Erythematosus, Systemic / Q000188:drug therapy / Q000503:physiopathology*; D011241:Prednisone / Q000494:pharmacology / Q000627:therapeutic use; D017697:Premenopause / Q000502:physiology*
chemical_list: D011241:Prednisone