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A Wide Range of Deep Brain Stimulation of the Nucleus Accumbens Shell Time Independently Reduces the Extinction Period and Prevents the Reinstatement of Methamphetamine-Seeking Behavior in Rats Publisher Pubmed



Eskandari K1 ; Fattahi M1 ; Riahi E2 ; Khosrowabadi R3 ; Haghparast A1, 4, 5
Authors
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Authors Affiliations
  1. 1. School of Medicine, Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. Department of Physiology, School of Medicine, Tehran University of Medical Science, Tehran, Iran
  3. 3. Institute for Cognitive and Brain Sciences, Shahid Beheshti University, Tehran, Iran
  4. 4. School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran
  5. 5. Department of Basic Sciences, Iranian Academy of Medical Sciences, Tehran, Iran

Source: Life Sciences Published:2023


Abstract

Methamphetamine (METH) addiction is a significant public health issue, and standard medical therapies are often not curative. Deep Brain Stimulation (DBS) has recently shown the potential to cure addiction by modulating neural activity in specific brain circuits. Recent studies have revealed that the nucleus accumbens shell (NAcSh) could serve as a promising target in treating addiction. Therefore, the present study aimed to investigate the therapeutic effects of NAcSh high- or low-frequency stimulation (HFS or LFS) in the different time points of application on the extinction and reinstatement of the METH-conditioned place preference (CPP). LFS or HFS (10 or 130 Hz, 150–200 μA, 100 μs) was delivered to the NAcSh for 30 min non-simultaneous (in a distinct non-drug environment) or simultaneous (in a drug-paired context) of the drug-free extinction sessions. The obtained results showed that both non-simultaneous and simultaneous treatments by HFS and LFS notably reduced the extinction period of METH-induced CPP. Furthermore, the data indicated that both non-synchronous and synchronous HFS prevented METH-primed reinstatement, while only the LFS synchronized group could block the reinstatement of METH-seeking behavior. The results also demonstrated that HFS was more effective than LFS in attenuating METH-primed reinstatement, and applying HFS synchronous was significantly more effective than HFS non-synchronous in reducing the relapse of drug-seeking. In conclusion, the current study's results suggest that DBS of the NAcSh in a wide range of frequencies (LFS and HFS) could affect addiction-related behaviors. However, it should be considered that the frequency and timing of DBS administration are among the critical determining factors. © 2023 Elsevier Inc.
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