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Wadhwa R, Wen W, Frankland A, Leung V, Sinbandhit C, Stuart A, Dawes L, Hadzi-Pavlovic D, Levy F, Lenrootl R, Mitchell PB, Roberts G. White matter hyperintensities in young individuals with bipolar disorder or at high genetic risk. J Affect Disord 2019; 245:228-236. [PMID: 30412775 DOI: 10.1016/j.jad.2018.10.368] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/26/2018] [Accepted: 10/31/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Increased white matter hyperintensities (WMHs) is one of the most consistent imaging findings amongst participants with bipolar disorder (BD). This study investigated WMHs in a young population at high genetic risk for bipolar disorder (HR). METHODS MRI scans were conducted at baseline in HR individuals (n = 131), patients with BD (n = 47) and controls (CON) (n = 108). Most of the HR (n = 77) and CON (n = 74) group completed scans after two years. Scans were examined for the presence of WMHs. RESULTS There were significantly more periventricular WMHs in the BD compared to the CON group at baseline (p = .04). Although the prevalence of periventricular WMHs was intermediate in the HR group, there were no significant differences between the HR and CON or BD participants. Deep WMHs did not differ significantly between the groups. Over time, there was a significant increase in the prevalence of periventricular WMHs in both the HR and CON groups (p = .02). LIMITATIONS The use of a visual rating scale to examine WMHs is subjective. As the gradings were collapsed into 'present' or 'absent', we could not ascertain whether the severity of hyperintensities worsened over time. CONCLUSIONS Periventricular WMHs are more prevalent in young individuals with BD than controls. As these are not more prevalent in HR individuals, it is possible that these are either secondary to the development of bipolar disorder, its treatment, or resulting changes in lifestyle. In a novel finding, there were similar increases in the prevalence of WMHs in controls and HR youth over the 2-year period.
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Affiliation(s)
- Riya Wadhwa
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia
| | - Wei Wen
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Andrew Frankland
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Vivian Leung
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Carina Sinbandhit
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Angela Stuart
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Laughlin Dawes
- Medical Imaging Department, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Dusan Hadzi-Pavlovic
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Florence Levy
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Prince of Wales Hospital, Randwick, NSW, Australia
| | - Rhoshel Lenrootl
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Neuroscience Research Australia, Sydney, NSW, Australia; University of New Mexico, Albuquerque, New Mexico, United States
| | - Philip B Mitchell
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia; Prince of Wales Hospital, Randwick, NSW, Australia.
| | - Gloria Roberts
- School of Psychiatry, University of New South Wales, Randwick, NSW, Australia; Black Dog Institute, Prince of Wales Hospital, Randwick, NSW, Australia
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