Cytomegalovirus seropositivity and serointensity are associated with hippocampal volume and verbal memory in schizophrenia and bipolar disorder.

Josselin Houenou 1, 2, 3, 4, * Marc-Antoine D'Albis 1, 3, 4 Claire Daban 1, 3, 4 Nora Hamdani 1, 3, 4 Marine Delavest 4, 5, 6 Jean-Pierre Lépine 4, 5, 6 François-Eric Vederine 1, 3 S. Carde 1, 3 Mohamed Lajnef 1, 4 Christel Cabon 7 Faith Dickerson 8 Robert Yolken 8 Ryad Tamouza 9, 10 Cyril Poupon 2 Marion Leboyer 1, 3, 4
* Auteur correspondant
1 IMRB - Institut Mondor de Recherche Biomédicale
2 NEUROSPIN - Service NEUROSPIN
3 Service de psychiatrie
4 Fondation FondaMental
5 Service de psychiatrie
6 NAVVEC (UM 81) - Neuropsychopharmacologie des addictions. Vulnérabilité et variabilité expérimentale et clinique
7 Plateforme de Ressources Biologiques
8 Stanley Research Program
9 Hématologie -Immunologie -Cibles thérapeutiques
10 Laboratoire Jean Dausset d'Immunologie et d'Histocompatibilité
Abstract : INTRODUCTION: Cytomegalovirus (CMV) is a member of the herpesviridae family that has a limbic and temporal gray matter tropism. It is usually latent in humans but has been associated with schizophrenia, bipolar disorder and cognitive deficits in some populations. Hippocampal decreased volume and dysfunction play a critical role in these cognitive deficits. We hypothesized that CMV seropositivity and serointensity would be associated with hippocampal volume and cognitive functioning in patients with schizophrenia or bipolar disorder. METHODS: 102 healthy controls, 118 patients with bipolar disorder and 69 patients with schizophrenia performed the California Verbal Learning Test (CVLT) and had blood samples drawn to assess CMV IgG levels. A subgroup of 52 healthy controls, 31 patients with bipolar disorder and 27 patients with schizophrenia underwent T1 MRI for hippocampal volumetry. We analyzed the association between CMV serointensity and seropositivity with hippocampal volume. We also explored the correlation between CMV serointensity and seropositivity and CVLT scores. RESULTS: In both patient groups but not in controls, higher CMV serointensity was significantly associated with smaller right hippocampal volume. Further, in the group of patients with schizophrenia but not bipolar disorder, CMV serointensity was negatively correlated with CVLT scores. CONCLUSION: CMV IgG titers are associated with decreased hippocampal volume and poorer episodic verbal memory in patients with schizophrenia or bipolar disorder. The mechanism of this association warrants further exploration.
Keywords : cytomegalovirus schizophrenia bipolar disorder hippocampus verbal memory
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Article dans une revue
Progress in Neuro-Psychopharmacology and Biological Psychiatry, Elsevier, 2013, 48C, pp.142-148. 〈10.1016/j.pnpbp.2013.09.003〉
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Josselin Houenou, Marc-Antoine D'Albis, Claire Daban, Nora Hamdani, Marine Delavest, et al.. Cytomegalovirus seropositivity and serointensity are associated with hippocampal volume and verbal memory in schizophrenia and bipolar disorder.. Progress in Neuro-Psychopharmacology and Biological Psychiatry, Elsevier, 2013, 48C, pp.142-148. 〈10.1016/j.pnpbp.2013.09.003〉. 〈inserm-00877593〉

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