title: Duloxetine treatment and glycemic controls in patients with diagnoses other than diabetic peripheral neuropathic pain: a meta-analysis.
abstract: OBJECTIVE
  Mood disorders are often associated with poor glycemic control, and antidepressant treatments for mood and pain disorders can alter plasma glucose levels in patients with diabetes. A previous meta-analysis from three studies showed that duloxetine modestly increased fasting plasma glucose (FPG) and HbA(1c) levels in patients with diabetic peripheral neuropathic pain (DPNP). This meta-analysis examined whether there were any short- and long-term effects of duloxetine (20-120 mg/day) on glycemic control in patients with diagnoses other than DPNP.
  
  
  METHODS
  Short-term data (9-27 weeks): seven studies of duloxetine in general anxiety disorder, fibromyalgia, and chronic lower back pain (CLBP). Long-term data: 41-week, uncontrolled extension of the short-term CLBP study and 52-week study in patients with recurrence of major depressive disorder.
  
  
  METHODS
  Baseline-to-endpoint changes in FPG and HbA(1c) levels.
  
  
  RESULTS
  In short-term studies, patients were randomly assigned to placebo (n = 1098) or duloxetine (n = 1563). Mean baseline-to-endpoint changes in FPG and HbA(1c) did not significantly differ in duloxetine-treated patients compared with placebo-treated patients. In the 41-week study (n = 181), duloxetine-treated patients experienced a small but significant within-group baseline-to-endpoint increase in HbA(1c) (mean change = 0.1%; p < 0.001). This result was in contrast to absence of effect on mean baseline-to-endpoint within-group changes in FPG (p = 0.326) in that study, and to absence of between-treatment changes in FPG (p = 0.744) and HbA(1c) (p = 0.180) in the 52-week placebo-controlled study.
  
  
  CONCLUSIONS
  Duloxetine treatment did not significantly alter FPG and HbA(1c) levels compared with placebo treatment in the short-term studies. A small but statistically significant within-group increase in HbA(1c) was found in the 41-week study, but not in between-treatment group differences in the 52-week study. Neither of the long-term studies showed significant changes in the FPG levels. The small, non-reproducible HbA(1c) increase in one study of patients without DPNP may have resulted from patients with unrecognized diabetes in these trials.
authors.affiliation: Novartis Vaccines and Diagnostics, Siena, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Crucitti
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Mary
authors.initials: M
authors.lastname: Nilsson
authors.forename: Stephan
authors.initials: S
authors.lastname: Brecht
authors.forename: Charles R
authors.initials: CR
authors.lastname: Yang
authors.forename: Joachim
authors.initials: J
authors.lastname: Wernicke
mesh_terms: D000928:Antidepressive Agents / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use*; D001008:Anxiety Disorders / Q000188:drug therapy; D001786:Blood Glucose / Q000032:analysis / Q000187:drug effects*; D003929:Diabetic Neuropathies; D000068736:Duloxetine Hydrochloride; D005260:Female; D038321:Glycemic Index; D006801:Humans; D006943:Hyperglycemia / Q000139:chemically induced; D008297:Male; D008875:Middle Aged; D019964:Mood Disorders / Q000188:drug therapy; D016032:Randomized Controlled Trials as Topic; D013876:Thiophenes / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use*; D016896:Treatment Outcome
chemical_list: D000928:Antidepressive Agents; D001786:Blood Glucose; D013876:Thiophenes; D000068736:Duloxetine Hydrochloride