Resting state functional connectivity of the nucleus accumbens in youth with a family history of alcoholism.

Resting state functional connectivity of the nucleus accumbens in youth with a family history of alcoholism.
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DOI:
10.1016/j.pscychresns.2013.12.004
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发表时间:
2014-03-30
影响因子:
11.3
通讯作者:
Nagel BJ
Nagel BJ
中科院分区:
医学2区
文献类型:
--
作者:
Cservenka A;Casimo K;Fair DA;Nagel BJ

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有酗酒家族史(FHP)的青少年患酒精使用障碍(AUD)的风险更高。大脑中负责奖赏处理的关键区域-丘脑核(NAcc)参与了AUD的发展。因此,NAcc的功能连接可能是FHP青年风险的重要标志。采用静息态功能磁共振成像(rs-fcMRI)技术,对47例FHP和50例家族史阴性(FHN)的10-16岁青少年NAcc的内在连接进行了研究。FHP和FHN青少年在左侧NAcc与双侧额下回和左侧中央后回(PG)之间的静息状态同步性方面存在显著的组间差异。此外,FHP青年与FHN青年在右侧NAcc与左侧眶额皮质(OFC)、左侧上级颞回、右侧小脑、左侧PG和右侧枕叶皮质的功能连接方面存在差异。这些结果表明,FHP青少年NAcc和执行功能脑区之间的隔离较少,与奖励相关脑区(如OFC)的整合较少。目前的研究结果强调,在没有大量饮酒的情况下,发病前食欲系统的非典型连接可能是FHP青少年的一个风险标志。
Adolescents with a family history of alcoholism (FHP) are at heightened risk for developing alcohol use disorders (AUDs). The nucleus accumbens (NAcc), a key brain region for reward processing, is implicated in the development of AUDs. Thus, functional connectivity of the NAcc may be an important marker of risk in FHP youth. Resting state functional magnetic resonance imaging (rs-fcMRI) was used to examine the intrinsic connectivity of the NAcc in 47 FHP and 50 family history negative (FHN) youth, ages 10–16 years old. FHP and FHN adolescents showed significant group differences in resting state synchrony between the left NAcc and bilateral inferior frontal gyri and the left postcentral gyrus (PG). Additionally, FHP youth differed from FHN youth in right NAcc functional connectivity with the left orbitofrontal cortex (OFC), left superior temporal gyrus, right cerebellum, left PG, and right occipital cortex. These results indicate that FHP youth have less segregation between the NAcc and executive functioning brain regions, and less integration with reward-related brain areas, such as the OFC. The findings of the current study highlight that premorbid atypical connectivity of appetitive systems, in the absence of heavy alcohol use, may be a risk marker in FHP adolescents.
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