Neurobiology of Borderline Personality Disorder

Author(s):  
Annegret Krause-Utz ◽  
Inga Niedtfeld ◽  
Julia Knauber ◽  
Christian Schmahl

In this chapter, neuroimaging findings in BPD are discussed referring to the three core domains of BPD psychopathology: disturbed emotion processing and emotion dysregulation (including dissociation and altered pain processing), behavioral dysregulation and impulsivity, and interpersonal disturbances. Experimental approaches investigating BPD psychopathology on the subjective, behavioral, and neurobiological levels have become increasingly important for an improved understanding of BPD. Over the past decades, neuroimaging has become one of the most important tools in clinical neurobiology. Neuroimaging includes a broad spectrum of methods such as positron emission tomography (PET), structural and functional magnetic resonance imaging (fMRI), MR spectroscopy, and diffusion tensor imaging (DTI).

2008 ◽  
Vol 28 (8) ◽  
pp. 1440-1448 ◽  
Author(s):  
Guangliang Ding ◽  
Quan Jiang ◽  
Lian Li ◽  
Li Zhang ◽  
Zheng Gang Zhang ◽  
...  

Interaction between angiogenesis and axonal remodeling after stroke was dynamically investigated by MRI in rats with or without sildenafil treatments. Male Wistar rats were subjected to embolic stroke and treated daily with saline ( n = 10) or with sildenafil ( n = 11) initiated at 24 h and subsequently for 7 days after onset of ischemia. T*2-weighted imaging, cerebral blood flow (CBF), and diffusion tensor imaging (DTI) measurements were performed from 24 h to 6 weeks after embolization. T*2 and fractional anisotropy (FA) maps detected angiogenesis and axonal remodeling after stroke, respectively, starting from 1 week in sildenafil-treated rats. Areas demarcated by MRI with enhanced angiogenesis, elevated local CBF, and augmented axonal remodeling were spatially and temporally matched, and FA values were significantly correlated with the corresponding CBF values ( R = 0.66, P < 4 × 10−5) at 6 weeks after stroke. Axonal projections were reorganized along the ischemic boundary after stroke. These MRI measurements, confirmed by histology, showed that sildenafil treatment simultaneously enhanced angiogenesis and axonal remodeling, which were MRI detectable starting from 1 week after stroke in rats. The spatial and temporal consistency of MRI metrics and the correlation between FA and local CBF suggest that angiogenesis, by elevating local CBF, promotes axonal remodeling after stroke.


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