Brain white matter integrity in heroin addicts during methadone maintenance treatment is related to relapse propensity.
Cognitive deficits caused by heroin-induced white matter (WM) impairments hinder addicts' engagement in and benefit from treatment. The predictive value of WM integrity in heroin addicts during methadone maintenance treatment (MMT) for future relapse is unclear.



Forty-eight MMT patients were given baseline diffusion tensor imaging scans and divided into heroin relapsers (HR, 25 cases) and abstainers (HA, 23 cases) according to the results of 6-month follow-up. Intergroup comparisons were performed for fractional anisotropy (FA), radial diffusivity (RD), and axial diffusivity (AD). The correlation between diffusion tensor imaging indices and the degree of heroin relapse was analyzed.



Compared with HA group, HR group had reduced FA in the right retrolenticular part, left anterior and posterior limb of internal capsule, bilateral anterior corona radiata, and right external capsule. Three out of the six regions showed increased RD, with no changes in AD. The FA and AD values in the left posterior limb of internal capsule correlated negatively with the heroin-positive urinalysis rate within follow-up.



Lower WM integrity in MMT patients may add to neurobiological factors associated with relapse to heroin use. Strategies for improving WM integrity provide a new perspective to prevent future relapse to heroin abuse.
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Wei
W
Li
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Jia
J
Zhu
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Qiang
Q
Li
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Jianjun
J
Ye
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Jiajie
J
Chen
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Jierong
J
Liu
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Zhe
Z
Li
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Yongbin
Y
Li
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Xuejiao
X
Yan
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Yarong
Y
Wang
Department of Radiology Tangdu Hospital The Fourth Military Medical University Xi'an Shaanxi China.
Wei
W
Wang
D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging* / Q000187:drug effects; D038524:Diffusion Magnetic Resonance Imaging; D056324:Diffusion Tensor Imaging; D005500:Follow-Up Studies; D006556:Heroin Dependence / Q000000981:diagnostic imaging* / Q000188:drug therapy*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D009294:Narcotics / Q000627:therapeutic use*; D058850:Opiate Substitution Treatment; D011379:Prognosis; D012008:Recurrence; D066127:White Matter / Q000000981:diagnostic imaging / Q000187:drug effects
D009294:Narcotics; D008691:Methadone
Diffusion tensor imaging; heroin addiction; methadone maintenance treatment; relapse propensity; white matter integrity