open access

Vol 80, No 2 (2021)
Original article
Submitted: 2020-05-20
Accepted: 2020-07-01
Published online: 2020-07-08
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A structural magnetic resonance imaging study in therapy-naïve transsexual individuals

A. Starcevic1, M. Dakovic2, Z. Radojicic3, B. Filipovic1
·
Pubmed: 32644184
·
Folia Morphol 2021;80(2):442-447.
Affiliations
  1. Institute of Anatomy, Medical Faculty, University of Belgrade, Serbia
  2. Faculty for Physical Chemistry, University of Belgrade, Serbia
  3. Faculty of Organisational Sciences, University of Belgrade, Serbia

open access

Vol 80, No 2 (2021)
ORIGINAL ARTICLES
Submitted: 2020-05-20
Accepted: 2020-07-01
Published online: 2020-07-08

Abstract

Background: Transsexuality is explained and defined as a gender-identity disorder, characterised by very strong conviction of belonging to the opposite sex and has been associated with a distinct neuroanatomical pattern. Materials and methods: We performed a structural analysis in search of possible differences in grey matter structures based on magnetic resonance imaging scans of the brains of 26 individuals between 19 and 38 years of age. The participants were divided into two groups of 15 controls and 11 transgender individuals. The segmentation of subcortical grey matter was performed using FIRST model a model-based segmentation/registration tool, from FSL software package. Results: The results showed that the volume of the brain region called nucleus accumbens on the left side was significantly smaller in the group of transgender individuals compared to the control. It was the most important parameter which was shown to make distinction between two examined groups. Conclusions: The results also showed decreased volumes of the left thalamus, right hippocampus and right caudate nucleus.

Abstract

Background: Transsexuality is explained and defined as a gender-identity disorder, characterised by very strong conviction of belonging to the opposite sex and has been associated with a distinct neuroanatomical pattern. Materials and methods: We performed a structural analysis in search of possible differences in grey matter structures based on magnetic resonance imaging scans of the brains of 26 individuals between 19 and 38 years of age. The participants were divided into two groups of 15 controls and 11 transgender individuals. The segmentation of subcortical grey matter was performed using FIRST model a model-based segmentation/registration tool, from FSL software package. Results: The results showed that the volume of the brain region called nucleus accumbens on the left side was significantly smaller in the group of transgender individuals compared to the control. It was the most important parameter which was shown to make distinction between two examined groups. Conclusions: The results also showed decreased volumes of the left thalamus, right hippocampus and right caudate nucleus.

Get Citation

Keywords

transsexuals, magnetic resonance imaging, FSL, subcortical brain structures

About this article
Title

A structural magnetic resonance imaging study in therapy-naïve transsexual individuals

Journal

Folia Morphologica

Issue

Vol 80, No 2 (2021)

Article type

Original article

Pages

442-447

Published online

2020-07-08

Page views

1905

Article views/downloads

1505

DOI

10.5603/FM.a2020.0073

Pubmed

32644184

Bibliographic record

Folia Morphol 2021;80(2):442-447.

Keywords

transsexuals
magnetic resonance imaging
FSL
subcortical brain structures

Authors

A. Starcevic
M. Dakovic
Z. Radojicic
B. Filipovic

References (21)
  1. Ahsan RL, Allom R, Gousias IS, et al. Volumes, spatial extents and a probabilistic atlas of the human basal ganglia and thalamus. Neuroimage. 2007; 38(2): 261–270.
  2. Ashby FG, Ell SW, Valentin VV, et al. FROST: a distributed neurocomputational model of working memory maintenance. J Cogn Neurosci. 2005; 17(11): 1728–1743.
  3. Blanchard J, Brown S. Structured diagnostic interview schedules. Comprehensive Clinical Psychology. 1998; 4: 97–130.
  4. Brabec J, Krásený J, Petrovický P. Volumetry of striatum and pallidum in man--anatomy, cytoarchitecture, connections, MRI and aging. Sb Lek. 2003; 104(1): 13–65.
  5. Cohen-Kettenis PT, van Goozen SH, Doorn CD, et al. Cognitive ability and cerebral lateralisation in transsexuals. Psychoneuroendocrinology. 1998; 23(6): 631–641.
  6. Development Core Team. R. A language and environment for statistical computing [Internet]. 2016; Vienna: R Foundation for Statistical Computing. http://www.r-project.org/.
  7. Fisher AD, Castellini G, Bandini E, et al. Cross-sex hormonal treatment and body uneasiness in individuals with gender dysphoria. J Sex Med. 2014; 11(3): 709–719.
  8. Garcia-Falgueras A, Swaab DF. A sex difference in the hypothalamic uncinate nucleus: relationship to gender identity. Brain. 2008; 131(Pt 12): 3132–3146.
  9. Hahn A, Kranz GS, Küblböck M, et al. Structural Connectivity Networks of Transgender People. Cereb Cortex. 2015; 25(10): 3527–3534.
  10. Johnston JB. The morphology of the septum, hippocampus, and pallial commissures in repliles and mammals. J Comp Neurol. 1913; 23(5): 371–478.
  11. Kacala A. Being Trans Is (Finally) No Longer Classified as a Mental Disorder by the WHO. 2018; Hornet.
  12. Kruijver FP, Zhou JN, Pool CW, et al. Male-to-female transsexuals have female neuron numbers in a limbic nucleus. J Clin Endocrinol Metab. 2000; 85(5): 2034–2041.
  13. Mavridis I, Boviatsis E, Anagnostopoulou S. Anatomy of the human nucleus accumbens: a combined morphometric study. Surg Radiol Anat. 2011; 33(5): 405–414.
  14. Mavridis I, Boviatsis E, Anagnostopoulou S. Stereotactic anatomy of the human nucleus accumbens: from applied mathematics to microsurgical accuracy. Surg Radiol Anat. 2011; 33(7): 583–594.
  15. Neto LL, Oliveira E, Correia F, et al. The human nucleus accumbens: where is it? A stereotactic, anatomical and magnetic resonance imaging study. Neuromodulation. 2008; 11(1): 13–22.
  16. Nota NM, Burke SM, den Heijer M, et al. Brain sexual differentiation and effects of cross-sex hormone therapy in transpeople: A resting-state functional magnetic resonance study. Neurophysiol Clin. 2017; 47(5-6): 361–370.
  17. Patenaude B, Smith SM, Kennedy DN, et al. A Bayesian model of shape and appearance for subcortical brain segmentation. Neuroimage. 2011; 56(3): 907–922.
  18. Patenaude BM. Bayesian statistical models of shape and appearance for subcortical brain segmentation [Internet] [Ph.D.]. 2007; University of Oxford. http://ora.ox.ac.uk/objects/uuid:52f5fee0-60e8-4387-9560-728843e187b3.
  19. Simon L, Kozák LR, Simon V, et al. Regional grey matter structure differences between transsexuals and healthy controls--a voxel based morphometry study. PLoS One. 2013; 8(12): e83947.
  20. Spizzirri G, Duran FL, Chaim-Avancini TM, et al. Grey and white matter volumes either in treatment-naïve or hormone-treated transgender women: a voxel-based morphometry study. Sci Rep. 2018; 8(1): 736.
  21. Zhou JN, Hofman MA, Gooren LJ, et al. A sex difference in the human brain and its relation to transsexuality. Nature. 1995; 378(6552): 68–70.

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