Panic Disorder: Is the PAG Involved?

Data from studies with humans have suggested that abnormalities of midbrain structures, including the periaqueductal gray matter (PAG), could be involved in the neurobiology of panic disorder (PD). The electrical stimulation of the PAG in neurosurgical patients induces panic-like symptoms and the ef...

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Main Authors: Cristina Marta Del-Ben, Frederico Guilherme Graeff
Format: Article
Language:English
Published: Wiley 2009-01-01
Series:Neural Plasticity
Online Access:http://dx.doi.org/10.1155/2009/108135
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author Cristina Marta Del-Ben
Frederico Guilherme Graeff
author_facet Cristina Marta Del-Ben
Frederico Guilherme Graeff
author_sort Cristina Marta Del-Ben
collection DOAJ
description Data from studies with humans have suggested that abnormalities of midbrain structures, including the periaqueductal gray matter (PAG), could be involved in the neurobiology of panic disorder (PD). The electrical stimulation of the PAG in neurosurgical patients induces panic-like symptoms and the effect of drugs that are effective in the treatment of PD in the simulation of public speaking model of anxiety is in agreement with data from animal models of PD. Structural neuroimaging studies have shown increases in gray matter volume of midbrain and pons of PD patients. There is also evidence of lower serotonin transporter and receptor binding, and increases of metabolism in the midbrain of PD patients. Nevertheless, these midbrain abnormalities can not be considered as specific findings, since neuroimaging data indicate that PD patients have abnormalities in other brain structures that process fear and anxiety.
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spelling doaj-art-9823613d4d33488489a56a3b1a4ba8922025-02-03T06:01:02ZengWileyNeural Plasticity2090-59041687-54432009-01-01200910.1155/2009/108135108135Panic Disorder: Is the PAG Involved?Cristina Marta Del-Ben0Frederico Guilherme Graeff1Psychiatry Division, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes, 3900, 14048-900 Ribeirão Preto, SP, BrazilPsychiatry Division, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes, 3900, 14048-900 Ribeirão Preto, SP, BrazilData from studies with humans have suggested that abnormalities of midbrain structures, including the periaqueductal gray matter (PAG), could be involved in the neurobiology of panic disorder (PD). The electrical stimulation of the PAG in neurosurgical patients induces panic-like symptoms and the effect of drugs that are effective in the treatment of PD in the simulation of public speaking model of anxiety is in agreement with data from animal models of PD. Structural neuroimaging studies have shown increases in gray matter volume of midbrain and pons of PD patients. There is also evidence of lower serotonin transporter and receptor binding, and increases of metabolism in the midbrain of PD patients. Nevertheless, these midbrain abnormalities can not be considered as specific findings, since neuroimaging data indicate that PD patients have abnormalities in other brain structures that process fear and anxiety.http://dx.doi.org/10.1155/2009/108135
spellingShingle Cristina Marta Del-Ben
Frederico Guilherme Graeff
Panic Disorder: Is the PAG Involved?
Neural Plasticity
title Panic Disorder: Is the PAG Involved?
title_full Panic Disorder: Is the PAG Involved?
title_fullStr Panic Disorder: Is the PAG Involved?
title_full_unstemmed Panic Disorder: Is the PAG Involved?
title_short Panic Disorder: Is the PAG Involved?
title_sort panic disorder is the pag involved
url http://dx.doi.org/10.1155/2009/108135
work_keys_str_mv AT cristinamartadelben panicdisorderisthepaginvolved
AT fredericoguilhermegraeff panicdisorderisthepaginvolved