Grey and white matter volumes either in treatment-naive or hormone-treated transgender women: a voxel-based morphometry study

Autor(es):Mostrar menos -

Spizzirri, Giancarlo ^{[1, 2]} ; Souza Duran, Fabio Luis ^[1] ; Chaim-Avancini, Tiffany Moukbel ^[1] ; Serpa, Mauricio Henriques ^[1] ; Cavallet, Mikael ^[1] ; Abreu Pereira, Carla Maria ^[2] ; Santos, Pedro Paim ^[1] ; Squarzoni, Paula ^[1] ; da Costa, Naomi Antunes ^[1] ; Busatto, Geraldo F. ^{[1, 2]} ; Najjar Abdo, Carmita Helena ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo NAPNA USP, Lab Neuroimage Psychiat LIM 21, Res Appl Neurosci, Support Core, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Med Sch FMUSP, Dept Psychiat, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 8, JAN 15 2018.
• Citações Web of Science: 4

Resumo

Many previous magnetic resonance imaging (MRI) studies have documented sex differences in brain morphology, but the patterns of sexual brain differences in transgender women - male sex assigned at birth - with a diagnosis of gender dysphoria (TW) have been rarely investigated to date. We acquired T1-weighted MRI data for the following four (n = 80) groups: treatment-naive TW (TNTW), TW treated with cross-sex hormones for at least one year (TTW), cisgender men, and cisgender women (cisgender individuals as controls). Differences in whole-brain and regional white matter volume and grey matter volume (GMV) were assessed using voxel-based morphometry. We found lower global brain volumes and regional GMVs in a large portion of the posterior-superior frontal cortex in the cisgender women group than in the TTW and cisgender men groups. Additionally, both transgender groups exhibited lower bilateral insular GMVs than the cisgender women group. Our results highlight differences in the insula in both transgender groups; such differences may be characteristic of TW. Furthermore, these alterations in the insula could be related to the neural network of body perception and reflect the distress that accompanies gender dysphoria. (AU)

• Processo FAPESP: 12/19165-7 - Estudo por morfometria cerebral e imagens de tensores de difusão da microestrutura de substância branca em homens para mulheres transexuais antes e durante o processo transexualizador
• Beneficiário: Carmita Helena Najjar Abdo
• Modalidade de apoio: Auxílio à Pesquisa - Regular