Background: Bipolar Disorder (BD) is a severe chronic psychiatric disorder whose aetiology is still largely un-known. However, increasing literature reported the involvement of neurovascular factors in the pathophysiology of BD, suggesting that a measure of Cerebral Blood Flow (CBF) could be an important biomarker of the illness. Therefore, since, to date, Magnetic Resonance Perfusion Weighted Imaging (PWI) techniques, such as Dynamic Susceptibility Contrast (DSC) and Arterial Spin Labelling (ASL), are the most common approaches that allow non-invasive in-vivo perfusion measurements,this review aims to summarize the results from all PWI studies that evaluated the CBF in BD.Methods: A bibliographic search in PubMed up until May 2021 was performed. 16 PWI studies that used DSC or ASL sequences met our inclusion criteria.Results: Overall, the results supported the presence of hyper-perfusion in the cingulate cortex and fronto-temporal regions, as well as the presence of hypo-perfusion in the cerebellum in BD, compared with both healthy controls and patients with unipolar depression. CBF changes after cognitive and aerobic training, as well as in relation with other physiological, clinical, and neurocognitive variables were also reported.Limitations: The heterogeneity across the studies, in terms of experimental designs, sample selection, and methodological approach employed, limited the studies' comparison.Conclusions: These findings showed CBF alterations in the cingulate cortex, fronto-temporal regions, and cere-bellum in BD, suggesting that CBF may be an important pathophysiological marker of BD that merits further investigation to clarify the extent of neurovascular alterations.

Neurovascular alterations in bipolar disorder: A review of perfusion weighted magnetic resonance imaging studies / G. Delvecchio, D. Gritti, L. Squarcina, P. Brambilla. - In: JOURNAL OF AFFECTIVE DISORDERS. - ISSN 0165-0327. - 316:(2022), pp. 254-272. [10.1016/j.jad.2022.07.059]

Neurovascular alterations in bipolar disorder: A review of perfusion weighted magnetic resonance imaging studies

G. Delvecchio
Primo
;
L. Squarcina
Penultimo
;
P. Brambilla
Ultimo
2022

Abstract

Background: Bipolar Disorder (BD) is a severe chronic psychiatric disorder whose aetiology is still largely un-known. However, increasing literature reported the involvement of neurovascular factors in the pathophysiology of BD, suggesting that a measure of Cerebral Blood Flow (CBF) could be an important biomarker of the illness. Therefore, since, to date, Magnetic Resonance Perfusion Weighted Imaging (PWI) techniques, such as Dynamic Susceptibility Contrast (DSC) and Arterial Spin Labelling (ASL), are the most common approaches that allow non-invasive in-vivo perfusion measurements,this review aims to summarize the results from all PWI studies that evaluated the CBF in BD.Methods: A bibliographic search in PubMed up until May 2021 was performed. 16 PWI studies that used DSC or ASL sequences met our inclusion criteria.Results: Overall, the results supported the presence of hyper-perfusion in the cingulate cortex and fronto-temporal regions, as well as the presence of hypo-perfusion in the cerebellum in BD, compared with both healthy controls and patients with unipolar depression. CBF changes after cognitive and aerobic training, as well as in relation with other physiological, clinical, and neurocognitive variables were also reported.Limitations: The heterogeneity across the studies, in terms of experimental designs, sample selection, and methodological approach employed, limited the studies' comparison.Conclusions: These findings showed CBF alterations in the cingulate cortex, fronto-temporal regions, and cere-bellum in BD, suggesting that CBF may be an important pathophysiological marker of BD that merits further investigation to clarify the extent of neurovascular alterations.
Arterial spin labelling; Bipolar disorder; Cerebral blood flow; Dynamic susceptibility contrast; Perfusion weighted imaging; Cerebrovascular Circulation; Humans; Magnetic Resonance Angiography; Magnetic Resonance Imaging; Perfusion; Perfusion Imaging; Spin Labels; Bipolar Disorder
Settore MED/25 - Psichiatria
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/941578
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