Journal
JOURNAL OF PSYCHIATRIC RESEARCH
Volume 41, Issue 6, Pages 466-471Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpsychires.2006.05.006
Keywords
anxiety disorders; D-cycloserine; exposure therapy; phobia; extinction; generalisation
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Previous research [Hofmann SG, Meuret AE, Smits JA, Simon NM, Pollack MIL Eisenmenger K, et al. Augmentation of exposure therapy for social anxiety disorder with D-cycloserine. Archives of General Psychiatry 2006;63:298-304; Ressler KJ, Rothbaum BO, Tannenbaum L, Anderson P, Graap K, Zimand E, et al. Cognitive enhancers as adjuncts to psychotherapy: use Of D-CyCloserine in phobic individuals to facilitate extinction of fear. Archives of General Psychiatry 2004;61:1136-44] suggests that D-cycloserine (DCS) facilitates the reduction of clinical fear in humans. We used a well established intervention to evaluate the effectiveness of administering DCS as an adjunct to exposure therapy in a heightened, but sub-clinical, fear population. Over two studies, 100 spider-fearful participants were allocated to DCS or placebo before treatment and were assessed at pre-, immediate post-, and 3.5 weeks post-treatment. Significant treatment effects and return of fear was observed at follow-up, particularly in non-treatment contexts; however, both studies failed to demonstrate any enhancing effects of DCS (50 or 500 mg). DCS did not enhance the reduction of spider fears or the generalisation of treatment of a single session of exposure-based therapy. These results suggest that DCS may not enhance loss of non-clinical levels of fear in human populations. (c) 2006 Elsevier Ltd. All rights reserved.
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