TY - JOUR
T1 - Resting-state functional connectivity abnormalities in limbic and salience networks in social anxiety disorder without comorbidity
AU - Pannekoek, J. Nienke
AU - Veer, Ilya M.
AU - Van Tol, Marie José
AU - Van der Werff, Steven J.A.
AU - Demenescu, Liliana R.
AU - Aleman, André
AU - Veltman, Dick J.
AU - Zitman, Frans G.
AU - Rombouts, Serge A.R.B.
AU - Van der Wee, Nic J.A.
N1 - Funding Information: The infrastructure for the NESDA study is funded through the Geestkracht programme of the Netherlands Organization for Health Research and Development (ZonMw, grant number 10-000-1002) and is supported by participating universities and mental health care organizations (VU University Medical Center, GGZ inGeest, Arkin, Leiden University Medical Center, GGZ Rivierduinen, University Medical Center Groningen, Lentis, GGZ Friesland, GGZ Drenthe, IQ Healthcare, Netherlands Institute for Health Services Research (NIVEL) and Netherlands Institute of Mental Health and Addiction (Trimbos Institute). Part of this research was supported by a VIDI grant from the Netherlands Organization for Scientific Research (NWO) to S.A.R.B. Rombouts. Part of this research was also supported through the Netherlands Organization for Scientific Research—National Initiative Brain and Cognition (NWO-NIHC, project number 056-25-010).
PY - 2013/3
Y1 - 2013/3
N2 - The neurobiology of social anxiety disorder (SAD) is not yet fully understood. Structural and functional neuroimaging studies in SAD have identified abnormalities in various brain areas, particularly the amygdala and elements of the salience network. This study is the first to examine resting-state functional brain connectivity in a drug-naive sample of SAD patients without psychiatric comorbidity and healthy controls, using seed regions of interest in bilateral amygdala, in bilateral dorsal anterior cingulate cortex for the salience network, and in bilateral posterior cingulate cortex for the default mode network. Twelve drug-naive SAD patients and pair-wise matched healthy controls, all drawn from the Netherlands Study of Depression and Anxiety sample, underwent resting-state fMRI. Group differences were assessed with voxel-wise gray matter density as nuisance regressor. All results were cluster corrected for multiple comparisons (Z>2.3, p<.05). Relative to control subjects, drug-naive SAD patients demonstrated increased negative right amygdala connectivity with the left middle temporal gyrus, left supramarginal gyrus and left lateral occipital cortex. In the salience network patients showed increased positive bilateral dorsal anterior cingulate connectivity with the left precuneus and left lateral occipital cortex. Default mode network connectivity was not different between groups. These data demonstrate that drug-naive SAD patients without comorbidity show differences in functional connectivity of the amygdala, and of areas involved in self-awareness, some of which have not been implicated in SAD before.
AB - The neurobiology of social anxiety disorder (SAD) is not yet fully understood. Structural and functional neuroimaging studies in SAD have identified abnormalities in various brain areas, particularly the amygdala and elements of the salience network. This study is the first to examine resting-state functional brain connectivity in a drug-naive sample of SAD patients without psychiatric comorbidity and healthy controls, using seed regions of interest in bilateral amygdala, in bilateral dorsal anterior cingulate cortex for the salience network, and in bilateral posterior cingulate cortex for the default mode network. Twelve drug-naive SAD patients and pair-wise matched healthy controls, all drawn from the Netherlands Study of Depression and Anxiety sample, underwent resting-state fMRI. Group differences were assessed with voxel-wise gray matter density as nuisance regressor. All results were cluster corrected for multiple comparisons (Z>2.3, p<.05). Relative to control subjects, drug-naive SAD patients demonstrated increased negative right amygdala connectivity with the left middle temporal gyrus, left supramarginal gyrus and left lateral occipital cortex. In the salience network patients showed increased positive bilateral dorsal anterior cingulate connectivity with the left precuneus and left lateral occipital cortex. Default mode network connectivity was not different between groups. These data demonstrate that drug-naive SAD patients without comorbidity show differences in functional connectivity of the amygdala, and of areas involved in self-awareness, some of which have not been implicated in SAD before.
KW - Amygdala
KW - Anterior cingulate cortex
KW - Default mode network
KW - Resting-state functional connectivity
KW - Salience network
KW - Social anxiety disorder
UR - http://www.scopus.com/inward/record.url?scp=84875244757&partnerID=8YFLogxK
U2 - https://doi.org/10.1016/j.euroneuro.2012.04.018
DO - https://doi.org/10.1016/j.euroneuro.2012.04.018
M3 - Article
C2 - 22749355
SN - 0924-977X
VL - 23
SP - 186
EP - 195
JO - European neuropsychopharmacology
JF - European neuropsychopharmacology
IS - 3
ER -