Abstract
Brain asymmetry is a conserved feature in vertebrates. The dorsal diencephalic habenular complex shows conspicuous structural and functional asymmetries in a wide range of species, yet it is unclear if this condition is also present in humans. Addressing this possibility becomes relevant in light of recent findings presenting the habenula as a novel target for therapeutic intervention of affective disorders through deep brain stimulation. Here we performed volumetric analyses in postmortem diencephalic samples of male and female individuals, and report for the first time, the presence of directional asymmetries in the volume of the human habenula. The habenular volume is larger on the left side in both genders, a feature that can be explained by an enlargement of the left lateral habenula compared to the right counterpart. In contrast, the volume of the medial habenula shows no left–right directional bias in either gender. It is remarkable that asymmetries involve the lateral habenula, which in humans is particularly enlarged compared to other vertebrates and plays relevant roles in aversive processing and aversively motivated learning. Our findings of structural asymmetries in the human habenula are consistent with recent observations of lateral bias in activation, metabolism and damage of the human habenula, highlighting a potential role of habenular laterality in contexts of health and illness.
References
Agetsuma M, Aizawa H, Aoki T, Nakayama R, Takahoko M, Goto M, Sassa T, Amo R, Shiraki T, Kawakami K, Hosoya T, Higashijima S, Okamoto H (2010) The habenula is crucial for experience-dependent modification of fear responses in zebrafish. Nat Neurosci 13(11):1354–1356. doi:10.1038/nn.2654
Barth KA, Miklosi A, Watkins J, Bianco IH, Wilson SW, Andrew RJ (2005) fsi zebrafish show concordant reversal of laterality of viscera, neuroanatomy, and a subset of behavioral responses. Curr Biol 15(9):844–850. doi:10.1016/j.cub.2005.03.047
Bianco IH, Wilson SW (2009) The habenular nuclei: a conserved asymmetric relay station in the vertebrate brain. Philos Trans R Soc Lond B Biol Sci 364(1519):1005–1020
Carlson J, Noguchi K, Ellison G (2001) Nicotine produces selective degeneration in the medial habenula and fasciculus retroflexus. Brain Res 906(1–2):127–134
Carlson PJ, Diazgranados N, Nugent AC, Ibrahim L, Luckenbaugh DA, Brutsche N, Herscovitch P, Manji HK, Zarate CA Jr, Drevets WC (2013) Neural correlates of rapid antidepressant response to ketamine in treatment-resistant unipolar depression: a preliminary positron emission tomography study. Biol Psychiatry 73(12):1213–1221. doi:10.1016/j.biopsych.2013.02.008
Concha ML, Wilson SW (2001) Asymmetry in the epithalamus of vertebrates. J Anat 199(Pt 1–2):63–84
Concha ML, Bianco IH, Wilson SW (2012) Encoding asymmetry within neural circuits. Nat Rev Neurosci 13(12):832–843. doi:10.1038/nrn3371
Diaz E, Bravo D, Rojas X, Concha ML (2011) Morphologic and immunohistochemical organization of the human habenular complex. J Comp Neurol 519(18):3727–3747. doi:10.1002/cne.22687
Dreosti E, Vendrell Llopis N, Carl M, Yaksi E, Wilson SW (2014) Left-right asymmetry is required for the habenulae to respond to both visual and olfactory stimuli. Curr Biol 24(4):440–445. doi:10.1016/j.cub.2014.01.016
Duboc V, Dufourcq P, Blader P, Roussigne M (2015) Asymmetry of the brain: development and implications. Annu Rev Genet 49:647–672. doi:10.1146/annurev-genet-112414-055322
Facchin L, Duboue ER, Halpern ME (2015) Disruption of epithalamic left-right asymmetry increases anxiety in zebrafish. J Neurosci 35(48):15847–15859. doi:10.1523/JNEUROSCI.2593-15.2015
Härtel S, Jara J, Lemus CG, Concha ML (2007) 3D morphotopological analysis of asymmetric neuronal morphogenesis in developing zebrafish. In: Tavares JM, Nata J (eds) Computational modelling of objects represented in images. Fundamentals, methods and applications. Taylor and Francis Group, London, pp 215–220
Hennigan K, D’Ardenne K, McClure SM (2015) Distinct midbrain and habenula pathways are involved in processing aversive events in humans. J Neurosci 35(1):198–208. doi:10.1523/JNEUROSCI.0927-14.2015
Hikosaka O (2010) The habenula: from stress evasion to value-based decision-making. Nat Rev Neurosci 11(7):503–513. doi:10.1038/nrn2866
Ichijo H, Hamada M, Takahashi S, Kobayashi M, Nagai T, Toyama T, Kawaguchi M (2015) Lateralization, maturation, and anteroposterior topography in the lateral habenula revealed by ZIF268/EGR1 immunoreactivity and labeling history of neuronal activity. Neurosci Res 95:27–37. doi:10.1016/j.neures.2015.01.005
Krishnan S, Mathuru AS, Kibat C, Rahman M, Lupton CE, Stewart J, Claridge-Chang A, Yen SC, Jesuthasan S (2014) The right dorsal habenula limits attraction to an odor in zebrafish. Curr Biol 24(11):1167–1175. doi:10.1016/j.cub.2014.03.073
Lawson RP, Seymour B, Loh E, Lutti A, Dolan RJ, Dayan P, Weiskopf N, Roiser JP (2014) The habenula encodes negative motivational value associated with primary punishment in humans. Proc Natl Acad Sci USA 111(32):11858–11863. doi:10.1073/pnas.1323586111
Ranft K, Dobrowolny H, Krell D, Bielau H, Bogerts B, Bernstein HG (2010) Evidence for structural abnormalities of the human habenular complex in affective disorders but not in schizophrenia. Psychol Med 40(4):557–567. doi:10.1017/S0033291709990821
Sartorius A, Henn FA (2007) Deep brain stimulation of the lateral habenula in treatment resistant major depression. Med Hypotheses 69(6):1305–1308. doi:10.1016/j.mehy.2007.03.021
Sartorius A, Kiening KL, Kirsch P, von Gall CC, Haberkorn U, Unterberg AW, Henn FA, Meyer-Lindenberg A (2010) Remission of major depression under deep brain stimulation of the lateral habenula in a therapy-refractory patient. Biol Psychiatry 67(2):e9–e11. doi:10.1016/j.biopsych.2009.08.027
Savitz JB, Bonne O, Nugent AC, Vythilingam M, Bogers W, Charney DS, Drevets WC (2011a) Habenula volume in post-traumatic stress disorder measured with high-resolution MRI. Biol Mood Anxiety Disord 1(1):7. doi:10.1186/2045-5380-1-7
Savitz JB, Nugent AC, Bogers W, Roiser JP, Bain EE, Neumeister A, Zarate CA Jr, Manji HK, Cannon DM, Marrett S, Henn F, Charney DS, Drevets WC (2011b) Habenula volume in bipolar disorder and major depressive disorder: a high-resolution magnetic resonance imaging study. Biol Psychiatry 69(4):336–343. doi:10.1016/j.biopsych.2010.09.027
Sutherland RJ (1982) The dorsal diencephalic conduction system: a review of the anatomy and functions of the habenular complex. Neurosci Biobehav Rev 6(1):1–13
Villalon A, Sepulveda M, Guerrero N, Meynard MM, Palma K, Concha ML (2012) Evolutionary plasticity of habenular asymmetry with a conserved efferent connectivity pattern. PLoS One 7(4):e35329. doi:10.1371/journal.pone.0035329
Wree A, Zilles K, Schleicher A (1981) Growth of fresh volumes and spontaneous cell death in the nuclei habenulae of albino rats during ontogenesis. Anat Embryol 161(4):419–431
Zilles K, Schleicher A, Wingert F (1976) Quantitative growth analysis of limbic nuclei areas fresh volume in diencephalon and mesencephalon of an albino mouse ontogenic series. III. Nucleus interpe-uncularis. J Hirnforsch 17(1):21–29
Acknowledgments
This work was supported by the National Commission for Scientific and Technological Research (FONDECYT 1020902, 1151029 and 3160486 to M.L.C, S.H. and P.A.G., respectively; FONDEF D11I1096 to S.H. and E.D.; Ring Initiative ACT1402 to M.L.C and S.H.; Fondap 15150012 to M.L.C.), and the Millennium Science Initiative (P09-015-F to M.L.C and S.H.). We are grateful to Iskra Signore and Steve Wilson for critical reading of the manuscript; Daniela Bravo and Nohema Contreras for help in histological sections, segmentation and volumetric reconstructions; Dr. Mario Celis from the Medical Legal Service and Dr. Laura Segovia from the Pathological Anatomy Unit at Barros Luco-Trudeau Hospital for help in collecting samples of human brains.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
P. Ahumada-Galleguillos and C. G. Lemus contributed equally.
Rights and permissions
About this article
Cite this article
Ahumada-Galleguillos, P., Lemus, C.G., Díaz, E. et al. Directional asymmetry in the volume of the human habenula. Brain Struct Funct 222, 1087–1092 (2017). https://doi.org/10.1007/s00429-016-1231-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00429-016-1231-z