Amygdala Nuclei Volume and Shape in Military Veterans With Posttraumatic Stress Disorder.
Amygdala Nuclei Volume and Shape in Military Veterans With Posttraumatic Stress Disorder.
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DOI:
10.1016/j.bpsc.2019.11.016
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发表时间:
2020-03
期刊:
影响因子:
--
通讯作者:
LaBar KS
中科院分区:
文献类型:
--
作者:
Morey RA;Clarke EK;Haswell CC;Phillips RD;Clausen AN;Mufford MS;Saygin Z;VA Mid-Atlantic MIRECC Workgroup;Wagner HR;LaBar KS
The amygdala is a subcortical structure involved in socioemotional and associative fear learning processes relevant for understanding the mechanisms of posttraumatic stress disorder (PTSD). Research in animals indicates that the amygdala is a heterogeneous structure in which the basolateral and centromedial divisions are susceptible to stress. While the amygdala complex is implicated in the pathophysiology of PTSD, little is known about the specific contributions of the individual nuclei that constitute the amygdala complex. Military veterans (n = 355), including military veterans with PTSD (n = 149) and trauma-exposed control subjects without PTSD (n = 206), underwent high-resolution T1-weighted anatomical scans. Automated FreeSurfer segmentation of the amygdala yielded 9 structures: basal, lateral, accessory basal, anterior amygdaloid, and central, medial, cortical, and paralaminar nuclei, along with the corticoamygdaloid transition zone. Subregional volumes were compared between groups using ordinary-least-squares regression with relevant demographic and clinical regressors followed by 3-dimensional shape analysis of whole amygdala. PTSD was associated with smaller left and right lateral and paralaminar nuclei, but with larger left and right central, medial, and cortical nuclei (p < .05, false discovery rate corrected). Shape analyses revealed lower radial distance in anterior bilateral amygdala and lower Jacobian determinant in posterior bilateral amygdala in PTSD compared with control subjects. Alterations in select amygdala subnuclear volumes and regional shape distortions are associated with PTSD in military veterans. Volume differences of the lateral nucleus and the centromedial complex associated with PTSD demonstrate a subregion-specific pattern that is consistent with their functional roles in fear learning and fear expression behaviors.
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DOI:
10.1038/s41583-018-0039-7
发表时间:
2018-09
期刊:
Nature reviews. Neuroscience
影响因子:
--
作者:
Fenster RJ;Lebois LAM;Ressler KJ;Suh J
通讯作者:
Suh J
影响因子:
64.8
作者:
Janak PH;Tye KM
通讯作者:
Tye KM
影响因子:
3.1
作者:
Brancu M;Wagner HR;Morey RA;Beckham JC;Calhoun PS;Tupler LA;Marx CE;Taber KH;Hurley RA;Rowland J;McDonald SD;Hoerle JM;Moore SD;Kudler HS;Weiner RD;VA Mid-Atlantic MIRECC Workgroup;Fairbank JA
通讯作者:
Fairbank JA
影响因子:
2.9
作者:
Masini, Cher V.;Sasse, Sarah K.;Campeau, Serge
通讯作者:
Campeau, Serge
影响因子:
15.9
作者:
Mahan, Amy L.;Ressler, Kerry J.
通讯作者:
Ressler, Kerry J.