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- 저자 : Naren P. Rao (검색결과 1 건)
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Ganesan Venkatasubramanian,Naren P. Rao,Rashmi Arasappa,Sunil V. Kalmady,Bangalore N. Gangadhar 대한정신약물학회 2013 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.11 No.1
Objective: Classical studies demonstrated Neuroleptic Induced Extrapyramidal Side-effects (NIES; Neuroleptic threshold) to correlate with the efficacy of first generation antipsychotics. Second generation antipsychotics (SGAs), in addition to the extrapyramidal side effects, are also associated with metabolic side effects. This prospective study on antipsychotic-naïve schizophrenia patients, for the first-time, examined concurrently the relationship between clinical improvement and these side-effects NIES and Neuroleptic Induced Metabolic Side-effects. Methods: Thirty six-antipsychotic-naïve schizophrenia (DSM-IV) patients were examined at baseline and after 5 weeks of treatment with antipsychotics. At baseline and follow-up, we recorded the body mass index (BMI) and assessed psychopathology using Scale for Assessment of Positive-symptoms (SAPS) and Scale for Assessment of Negative-symptoms (SANS), extrapyramidal symptoms using Simpson-Angus Extra Pyramidal Scale (SAEPS) and improvement using Clinical Global Impression Improvement (CGI). Results: After treatment, patients showed significant reduction in SAPS (baseline, 27.97±14.47; follow-up, 14.63±13.25; p<0.001)and SANS total scores (baseline, 63.77±28.96; follow-up, 49.30±28.77; p=0.001) and a significant increase in BMI (baseline,18.5±3.37; follow-up, 19.13±3.17; p<0.001). At follow-up CGI-Improvement score was (2.55±0.65) and SAEPS score was (0.8±1.32). CGI-Improvement score had a significant negative correlation with magnitude of increase in BMI (rs=-0.39; p=0.01)and SAEPS symptom score at follow-up (rs=-0.58; p<0.001). In addition, magnitude of increase in BMI showed positive correlation with the magnitude of reduction in SAPS total score (rs=0.33; p=0.04). Conclusion: The study findings suggest a possible relation between clinical improvement and antipsychotic-induced neuroleptic as well as metabolic side-effects in schizophrenia. Though the mechanism of this relation is yet to be elucidated, insulin signaling pathways and lipid homeostasis are potential mechanisms in addition to the established neurotransmitter hypothesis. Theoretically findings support the novel hypothetical construct of ‘Neuro-Metabolic threshold’ in the treatment of schizophrenia.
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