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Bastos CR, Bock BB, Xavier J, Camerini L, Dewes SS, Grellert M, de Carvalho HW, Jansen K, da Silva RA, Pinheiro RT, de Mattos Souza L, Oses JP, Portela LV, Lara DR, Tovo-Rodrigues L, Ghisleni G. Temperament traits mediate the relationship between CACNA1C polymorphisms and bipolar disorder in cisgender women. Eur Arch Psychiatry Clin Neurosci 2023; 273:41-50. [PMID: 36181558 DOI: 10.1007/s00406-022-01493-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 09/13/2022] [Indexed: 11/03/2022]
Abstract
The influence of temperament traits on bipolar disorder (BD) has been investigated. Both temperament traits and BD are partially genetically determined and seem to be influenced by variations in the CACNA1C gene. These variations presented a significant interactive effect with biological sex, although studies that evaluate this relationship are scarce. Here, we assessed the mediation effect of temperament traits on the relationship between two polymorphisms in the CACNA1C gene (rs1006737 and rs4765913) and BD according to sex. This is a cross-sectional study consisting of 878 Caucasian individuals (508 women and 370 men), aged 18-35, enrolled in a population-based study in the city of Pelotas, Southern Brazil. BD diagnosis was evaluated using the clinical interview MINI 5.0, and temperament traits were assessed via the application of the Affective and Emotional Composite Temperament Scale (AFECTS). Mediation models were tested using the modeling tool PROCESS (version 3.3) for SPSS. Bootstrapping-enhanced mediation analyses in women indicated that traits anger (39%) and caution (27%) mediated the association between the rs4765913 SNP and BD, while traits volition (29%), anger (35%), and caution (29%) mediated the association between the AA haplotype (rs1006737-rs4765913) and the BD. No effect was encountered for cisgender men. Our model revealed that paths from CACNA1C SNPs to BD are mediated by specific temperament traits in women, reinforcing the definition of temperament traits as endophenotypes.
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Affiliation(s)
- Clarissa Ribeiro Bastos
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
- Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Bertha Bueno Bock
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Janaina Xavier
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Laísa Camerini
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Samantha Seibt Dewes
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Mateus Grellert
- Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Karen Jansen
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Ricardo Azevedo da Silva
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Ricardo Tavares Pinheiro
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Luciano de Mattos Souza
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil
| | - Jean Pierre Oses
- Institute of Biological Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, Brazil
| | - Luis Valmor Portela
- Department of Biochemistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Diogo Rizzato Lara
- Department of Cellular and Molecular Biology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luciana Tovo-Rodrigues
- Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Gabriele Ghisleni
- Post-Graduation Program in Health and Behavior, Center of Health Science, Catholic University of Pelotas, 373, 324C Gonçalves Chaves Street, Pelotas, Rio Grande do Sul, CEP 96015-560, Brazil.
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Beyer DKE, Horn L, Klinker N, Freund N. Risky decision-making following prefrontal D1 receptor manipulation. Transl Neurosci 2021; 12:432-443. [PMID: 34760299 PMCID: PMC8569284 DOI: 10.1515/tnsci-2020-0187] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 12/15/2022] Open
Abstract
The prefrontal dopamine D1 receptor (D1R) is involved in cognitive processes. Viral overexpression of this receptor in rats further increases the reward-related behaviors and even its termination induces anhedonia and helplessness. In this study, we investigated the risky decision-making during D1R overexpression and its termination. Rats conducted the rodent version of the Iowa gambling task daily. In addition, the methyl CpG–binding protein-2 (MeCP2), one regulator connecting the dopaminergic system, cognitive processes, and mood-related behavior, was investigated after completion of the behavioral tasks. D1R overexpressing subjects exhibited maladaptive risky decision-making and risky decisions returned to control levels following termination of D1R overexpression; however, after termination, animals earned less reward compared to control subjects. In this phase, MeCP2-positive cells were elevated in the right amygdala. Our results extend the previously reported behavioral changes in the D1R-manipulated animal model to increased risk-taking and revealed differential MeCP2 expression adding further evidence for a bipolar disorder-like phenotype of this model.
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Affiliation(s)
- Dominik K. E. Beyer
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University, 44801 Bochum, Germany
| | - Lisa Horn
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University, 44801 Bochum, Germany
| | - Nadine Klinker
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University, 44801 Bochum, Germany
| | - Nadja Freund
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University, 44801 Bochum, Germany
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Damme KSF, Alloy LB, Young CB, Kelley NJ, Chein J, Ng TH, Titone MK, Black CL, Nusslock R. Amygdala subnuclei volume in bipolar spectrum disorders: Insights from diffusion-based subsegmentation and a high-risk design. Hum Brain Mapp 2020; 41:3358-3369. [PMID: 32386113 PMCID: PMC7375099 DOI: 10.1002/hbm.25021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 04/06/2020] [Accepted: 04/13/2020] [Indexed: 12/31/2022] Open
Abstract
Amygdala abnormalities are widely documented in bipolar spectrum disorders (BSD). Amygdala volume typically is measured after BSD onset; thus, it is not known whether amygdala abnormalities predict BSD risk or relate to the disorder. Additionally, past literature often treated the amygdala as a homogeneous structure, and did not consider its distinct subnuclei and their differential connectivity to other brain regions. To address these issues, we used a behavioral high‐risk design and diffusion‐based subsegmentation to examine amygdala subnuclei among medication‐free individuals with, and at risk for, BSD. The behavioral high‐risk design (N = 114) included low‐risk (N = 37), high‐risk (N = 47), and BSD groups (N = 30). Diffusion‐based subsegmentation of the amygdala was conducted to determine whether amygdala volume differences related to particular subnuclei. Individuals with a BSD diagnosis showed greater whole, bilateral amygdala volume compared to Low‐Risk individuals. Examination of subnuclei revealed that the BSD group had larger volumes compared to the High‐Risk group in both the left medial and central subnuclei, and showed larger volume in the right lateral subnucleus compared to the Low‐Risk group. Within the BSD group, specific amygdala subnuclei volumes related to time since first episode onset and number of lifetime episodes. Taken together, whole amygdala volume analyses replicated past findings of enlargement in BSD, but did not detect abnormalities in the high‐risk group. Examination of subnuclei volumes detected differences in volume between the high‐risk and BSD groups that were missed in the whole amygdala volume. Results have implications for understanding amygdala abnormalities among individuals with, and at risk for, a BSD.
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Affiliation(s)
| | - Lauren B Alloy
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, USA
| | - Christina B Young
- Department of Psychology, Northwestern University, Evanston, Illinois, USA.,Department of Neurology & Neurological Sciences, Stanford University School of Medicine, Stanford, California, USA
| | - Nicholas J Kelley
- Department of Psychology, Northwestern University, Evanston, Illinois, USA.,School of Psychology, University of Southampton, Southampton, UK
| | - Jason Chein
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, USA
| | - Tommy H Ng
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, USA
| | - Madison K Titone
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, USA
| | - Chelsea L Black
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, USA.,Department of Neurology & Neurological Sciences, Stanford University School of Medicine, Stanford, California, USA
| | - Robin Nusslock
- Department of Psychology, Northwestern University, Evanston, Illinois, USA
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