Abnormal cerebellar morphometry in abstinent adolescent marijuana users.

Abnormal cerebellar morphometry in abstinent adolescent marijuana users.
复制标题

DOI:
10.1016/j.pscychresns.2009.12.004
复制
发表时间:
2010-05-30
影响因子:
2.3
通讯作者:
Tapert, Susan F.
Tapert, Susan F.
中科院分区:
医学4区
文献类型:
--
作者:
Medina, Krista Lisdahl;Nagel, Bonnie J.;Tapert, Susan F.

文献摘要

参考文献

被引文献

相似文献

一般来说,来自成年人的功能神经成像数据发现,额小脑功能障碍与急性和长期使用大麻(MJ)有关。一项结构神经成像研究发现,有大量多物质使用史的年轻成年MJ使用者的小脑蠕虫体积减少。这项研究的目的是描述青少年慢性MJ使用者在一个月的监测戒断后的小脑体积。参与者为16-18岁的MJ使用者(n=16)和对照组(n=16)。广泛的排除标准包括精神或神经紊乱病史。在监测戒酒28天后,收集了药物使用史、神经心理数据和脑部结构扫描。训练有素的研究人员在高分辨率T1加权磁共振图像上定义了小脑体积(包括三个小脑蚯蚓叶和两个小脑半球)。青少年MJ使用者表现出明显大于对照组的下后叶(小叶VIII-X)蚯蚓体积(p<.009),超过了终生酒精和其他药物使用、性别和颅内体积的影响。较大的蚯蚓体积与较差的执行功能有关(P‘s<0.05)。在一个月的禁欲后,青少年MJ使用者的小脑后部蠕虫体积明显大于未使用的对照组。这些更大的量被认为是病态的,因为与较差的执行功能有关。需要进行纵向研究,以检查青春期典型的小脑发育和大麻使用的影响。
Functional neuroimaging data from adults have, in general, found frontocerebellar dysfunction associated with acute and chronic marijuana (MJ) use. One structural neuroimaging study found reduced cerebellar vermis volume in young adult MJ users with a history of heavy polysubstance use. The goal of this study was to characterize cerebellar volume in adolescent chronic MJ users following one month of monitored abstinence. Participants were MJ users (n=16) and controls (n=16) aged 16-18 years. Extensive exclusionary criteria included history of psychiatric or neurologic disorders. Drug use history, neuropsychological data, and structural brain scans were collected after 28 days of monitored abstinence. Trained research staff defined cerebellar volumes (including three cerebellar vermis lobes and both cerebellar hemispheres) on high-resolution T1-weighted magnetic resonance images. Adolescent MJ users demonstrated significantly larger inferior posterior (lobules VIII-X) vermis volume (p<.009) than controls, above and beyond effects of lifetime alcohol and other drug use, gender, and intracranial volume. Larger vermis volumes were associated with poorer executive functioning (p’s<.05). Following one month of abstinence, adolescent MJ users had significantly larger posterior cerebellar vermis volumes than non-using controls. These greater volumes are suggested to be pathological based on linkage to poorer executive functioning. Longitudinal studies are needed to examine typical cerebellar development during adolescence and the influence of marijuana use.
DOI: 10.1016/j.brainres.2007.10.062
发表时间: 2008-01-29
期刊: BRAIN RESEARCH
影响因子: 2.9
作者:
Bindukumar, B.;Mahajan, S. D.;Schwartz, S. A.
通讯作者: Schwartz, S. A.
DOI: 10.3109/10826087709022166
发表时间: 1977-01-01
期刊: INTERNATIONAL JOURNAL OF THE ADDICTIONS
影响因子: --
作者:
CARLIN, AS;TRUPIN, EW
通讯作者: TRUPIN, EW
DOI: 10.1016/0892-0362(94)00053-g
发表时间: 1995-01-01
影响因子: 2.9
作者:
BELUE, RC;HOWLETT, AC;HUTCHINGS, DE
通讯作者: HUTCHINGS, DE
DOI: 10.1176/appi.ajp.160.2.262
发表时间: 2003-02-01
影响因子: 17.7
作者:
Allen, G;Courchesne, E
通讯作者: Courchesne, E
DOI: 10.3109/15622970209150624
发表时间: 2002-10-01
期刊: The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry
影响因子: --
作者:
Bussing, Regina;Grudnik, Jennifer;Leonard, Christiana
通讯作者: Leonard, Christiana