Published online by Cambridge University Press: 06 July 2010
ABSTRACT
Depression is an etiologically and clinically heterogeneous syndrome frequently co-occurring in a wide spectrum of psychiatric disorders. Characterized by a wide range of symptoms that reflect alterations in cognitive, emotional, and psychomotor processes, this syndrome is moderately to highly heritable, and caused by interaction of genes and adverse life events. Differentiation of risk-related psychobiological and neuropsychological markers is essential for the dissection of the complex genetic susceptibility to depression and comorbid disorders. A brain serotonin (5-HT) system dysfunction is thought to be involved in the pathogenesis of depression by modulating cognitive dysfunction, stress response, neuroadaptive processes, and resulting pervasive emotional disturbance. A regulatory variation in the gene encoding the 5-HT transporter (5-HTT), the master controller in the fine-tuning of 5-HT signaling, is not only associated with anxiety-related traits, but also modifies the risk of developing disorders of emotion regulation. Yet the neural and molecular mechanisms underlying gene × environment interaction are poorly understood. This paper investigates innate variability of brain 5-HTT function from an interdisciplinary perspective blending behavioral genetics and cognitive neuroscience. Following an appraisal of imaging neural correlates of genomic variation and epigenetic mechanisms as a strategy for psychiatric disorder risk assessment, future challenges for biosocial sciences in the perspective of the complex genetic architecture of emotional behavior and social interaction in non-human primates and humans are defined.
To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.