publicado em 06/03/2013 às 11h40:00
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Magnetic stimulation helps to reduce cocaine consumption by up to 60%

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Urine analysis show that treatment reduced 60% of cocaine
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Urine analysis show that treatment reduced 60% of cocaine

By acting on the brain regions responsible for crack cocaine, the technique of repetitive transcranial magnetic stimulation can reduce the craving for cocaine use in addicts of droga.O method could reduce cocaine use in patients treated for up to 60%. The results are from a survey conducted at the Faculty of Medicine, University of São Paulo (USP) by psychiatrist Philip Leite Ribeiro.

To achieve stimulation, the patient is utilized a coil that produces a powerful magnetic field, oscillating, generates an electrical current. The magnetic field is produced timely, but extremely powerful, says Ribeiro. The current through the skull and acts on the central nervous system, performing the modulation of brain non-invasively.

The doctor reports that the generated electrical stimuli depolarize neurons (nervous system cells). They reach regions that are directly linked to modulation of the crack, which are anterior ventral tegmental area, the anterior cingulate gyrus and orbito-frontal cortex, allowing its reduction, says.

The treatment achieved a 80% reduction of craving and 60% of cocaine use, evidenced by urinalysis. It is a reduction more effective than currently achieved through medication, says Ribeiro. A drug therapy can decrease the cleft between 20% and 30%.

<b> New Life </ b>

Patients underwent 20 sessions of magnetic stimulation, five times a week, at the Institute of Psychiatry (IPq), Hospital das Clinicas (HC) FMUSP. After this period, attending a relapse prevention group for two months, coordinated by a psychologist, and were discharged after three months. Before, during and after treatment, the patients underwent a detailed neuropsychological assessment, the physician account. Were also conducted periodic urine testing for the presence of benzoylecgonine, the main substance produced by the body from cocaine (metabolite).

The first magnetic stimulation device was developed in 1985 in Shefield (England). He began a new era in brain stimulation, says Ribeiro. Currently on the market there are several machines that generally follow the same principle of the apparatus used in the study.

Magnetic stimulation is already used in health services, such as therapy for resistant cases of depression drug treatments of hallucinations that resistentem and treatment of pain. The technique is also adopted in the mapping of functional areas in neurological surgery, to reduce the impact of surgical interventions in the functioning of the brain, says the doctor.

In cocaine addicts, neuromodulation is still only tentatively adopted in university hospitals and research centers. According to Ribeiro, in the case of addiction, the method still needs the approval of the Federal Council of Medicine (CFM) to be used in clinical treatment, further research will also be needed to replicate the results obtained in this study.

<i> With the information USP </ i>

   Palavras-chave:   Magnetic stimulation    Cocaine    University of São Paulo    USP    São Paulo    School of Medicine   
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