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1.
Eur J Dent Educ ; 2024 Aug 21.
Article in English | MEDLINE | ID: mdl-39166372

ABSTRACT

INTRODUCTION: Resilience is defined as an individual's capacity to effectively adapt in the face of challenges without detrimental effects on their health and well-being. This scoping review identifies and rationalises the published concepts that underpin resilience in oral health professional (OHP) education. It provides recommendations for the development of evidence-based strategies for promoting resilience in OHP education. METHODS: The PRISMA and Arksey and O'Malley methodological frameworks for scoping reviews were used to determine the methodology and answer the question 'What concepts contribute to resilience in OHP Education?'. The search strategy included published literature searches and internet searches. RESULTS: In total, 744 articles on resilience and coping were identified, and 59 were included after excluding irrelevant records. Most studies used surveys as their study design and focused on undergraduate dental students in North America and Asia. Three main themes were identified: factors that contribute to resilience, measurement tools and scales and enhancing resilience. This review highlights a positive correlation between increased resilience and improved outcomes for dental students. CONCLUSION: Resilience and its related factors are not well understood. There is insufficient evidence to support interventions for building resilience due to inconsistent measuring methods and limited research validating resilience scales in OHP education. Investigators should accurately understand the terminology for clarity and consistency. Validated outcome measures and student feedback should be used to determine the effectiveness of interventions. It is important to teach students coping strategies to manage stressors, and digital applications for building resilience should be developed and tested in OHP student populations.

2.
Health Expect ; 2023 Oct 23.
Article in English | MEDLINE | ID: mdl-37867364

ABSTRACT

BACKGROUND: Patient and public involvement (PPI) is an increasing priority in health-related research and education. Attracting and supporting people from different demographic groups to give up their time and get involved is important to help ensure that all parts of society are empowered, represented and their voices heard in decisions that may affect their health and quality of life. OBJECTIVES: (1) To determine if a demographically diverse cross-section of society would be interested in contributing to healthcare research and education. (2) To understand factors that can act as barriers and enablers to effective and diverse PPI. METHOD: PPI survey data was collected via engagement events, with the aim of scoping interest in PPI from a diverse public. A Focus Group study involving members of the public, academic and professional service staff, was then conducted to gain a deeper understanding around the barriers and enablers of diversity within PPI. RESULTS: 71% of a diverse rich public indicated they would like to get involved in healthcare research and teaching. 76% of survey respondents indicated that they would be happy to share a personal or family experience of healthcare. The two biggest factors impacting on our cohort getting involved are' availability of time' and 'being aware of PPI opportunities'. These factors may disproportionally affect specific groups. Shared and individual PPI enablers and barriers were identified across all stakeholder groups within the Focus Group Study, as well as generic and novel factors that would impact on an institutions' ability to improve PPI diversity. CONCLUSION: These data points confirm a demographically diverse public's appetite to get involved in academic health research and teaching. This needs to be recognised and harnessed to ensure public contributor networks are representative of society. Equality Impact Assessments should be undertaken in relation to all PPI opportunities. There is a need to recognise the investment of time and resources required to build mutually beneficial relationships with diverse communities as well as the development of inclusive 'fit for purpose' PPI infrastructures to support the uptake of diverse PPI contributors. PUBLIC CONTRIBUTION: This study involved members of the public responding to a short survey. Public contributors made up one of the three focus groups. The School of Medicine lead public contributor was also involved in the preparation of this manuscript.

3.
Eur Arch Psychiatry Clin Neurosci ; 270(7): 921-932, 2020 Oct.
Article in English | MEDLINE | ID: mdl-31802253

ABSTRACT

Recent genome-wide association studies have demonstrated that the genetic burden associated with depression correlates with depression severity. Therefore, conducting genetic studies of patients at the most severe end of the depressive disorder spectrum, those with treatment-resistant depression and who are prescribed electroconvulsive therapy (ECT), could lead to a better understanding of the genetic underpinnings of depression. Despite ECT being one of the most effective forms of treatment for severe depressive disorders, it is usually placed at the end of treatment algorithms of current guidelines. This is perhaps because ECT has controlled risk and logistical demands including use of general anaesthesia and muscle relaxants and side-effects such as short-term memory impairment. Better understanding of the genetics and biology of ECT response and of cognitive side-effects could lead to more personalized treatment decisions. To enhance the understanding of the genomics of severe depression and ECT response, researchers and ECT providers from around the world and from various depression or ECT networks, but not limited to, such as the Psychiatric Genomics Consortium, the Clinical Alliance and Research in ECT, and the National Network of Depression Centers have formed the Genetics of ECT International Consortium (Gen-ECT-ic). Gen-ECT-ic will organize the largest clinical and genetic collection to date to study the genomics of severe depressive disorders and response to ECT, aiming for 30,000 patients worldwide using a GWAS approach. At this stage it will be the largest genomic study on treatment response in depression. Retrospective data abstraction and prospective data collection will be facilitated by a uniform data collection approach that is flexible and will incorporate data from many clinical practices. Gen-ECT-ic invites all ECT providers and researchers to join its efforts.


Subject(s)
Datasets as Topic , Depressive Disorder/genetics , Depressive Disorder/therapy , Electroconvulsive Therapy , Genome-Wide Association Study , Multicenter Studies as Topic , Data Collection , Humans
4.
Br J Psychiatry ; 213(3): 542-547, 2018 09.
Article in English | MEDLINE | ID: mdl-30113284

ABSTRACT

BACKGROUND: Pregnancy and childbirth are a period of high risk for women with bipolar disorder and involve difficult decisions particularly about continuing or stopping medications.AimsTo explore what clinical predictors may help to individualise the risk of perinatal recurrence in women with bipolar disorder. METHOD: Information was gathered retrospectively by semi-structured interview, questionnaires and case-note review from 887 women with bipolar disorder who have had children. Clinical predictors were selected using backwards stepwise logistic regression, conditional permutation random forests and reinforcement learning trees. RESULTS: Previous perinatal history of affective psychosis or depression was the most significant predictor of a perinatal recurrence (odds ratio (OR) = 8.5, 95% CI 5.04-14.82 and OR = 3.6, 95% CI 2.55-5.07 respectively) but even parous women with bipolar disorder without a previous perinatal mood episode were at risk following a subsequent pregnancy, with 7% developing postpartum psychosis. CONCLUSIONS: Previous perinatal history of affective psychosis or depression is the most important predictor of perinatal recurrence in women with bipolar disorder and can be used to individualise risk assessments.Declaration of interestNone.


Subject(s)
Affective Disorders, Psychotic/epidemiology , Bipolar Disorder/psychology , Depression/epidemiology , Postpartum Period/psychology , Pregnancy Complications/psychology , Adult , Aged , Aged, 80 and over , Bipolar Disorder/classification , Diagnostic and Statistical Manual of Mental Disorders , Female , Humans , Logistic Models , Middle Aged , Multivariate Analysis , Pregnancy , Recurrence , Retrospective Studies , Risk Assessment , Risk Factors , Surveys and Questionnaires , United Kingdom/epidemiology , Young Adult
5.
Am J Med Genet B Neuropsychiatr Genet ; 177(4): 468-475, 2018 06.
Article in English | MEDLINE | ID: mdl-29671935

ABSTRACT

The etiologies of bipolar disorder (BD) and schizophrenia include a large number of common risk alleles, many of which are shared across the disorders. BD is clinically heterogeneous and it has been postulated that the pattern of symptoms is in part determined by the particular risk alleles carried, and in particular, that risk alleles also confer liability to schizophrenia influence psychotic symptoms in those with BD. To investigate links between psychotic symptoms in BD and schizophrenia risk alleles we employed a data-driven approach in a genotyped and deeply phenotyped sample of subjects with BD. We used sparse canonical correlation analysis (sCCA) (Witten, Tibshirani, & Hastie, ) to analyze 30 psychotic symptoms, assessed with the OPerational CRITeria checklist, and 82 independent genome-wide significant single nucleotide polymorphisms (SNPs) identified by the Schizophrenia Working group of the Psychiatric Genomics Consortium for which we had data in our BD sample (3,903 subjects). As a secondary analysis, we applied sCCA to larger groups of SNPs, and also to groups of symptoms defined according to a published factor analyses of schizophrenia. sCCA analysis based on individual psychotic symptoms revealed a significant association (p = .033), with the largest weights attributed to a variant on chromosome 3 (rs11411529), chr3:180594593, build 37) and delusions of influence, bizarre behavior and grandiose delusions. sCCA analysis using the same set of SNPs supported association with the same SNP and the group of symptoms defined "factor 3" (p = .012). A significant association was also observed to the "factor 3" phenotype group when we included a greater number of SNPs that were less stringently associated with schizophrenia; although other SNPs contributed to the significant multivariate association result, the greatest weight remained assigned to rs11411529. Our results suggest that the canonical correlation is a useful tool to explore phenotype-genotype relationships. To the best of our knowledge, this is the first study to apply this approach to complex, polygenic psychiatric traits. The sparse canonical correlation approach offers the potential to include a larger number of fine-grained systematic descriptors, and to include genetic markers associated with other disorders that are genetically correlated with BD.


Subject(s)
Bipolar Disorder/genetics , Psychotic Disorders/genetics , Schizophrenia/genetics , Adult , Alleles , Female , Gene Frequency/genetics , Genetic Predisposition to Disease , Genome-Wide Association Study , Genotype , Humans , Male , Middle Aged , Phenotype , Polymorphism, Single Nucleotide/genetics , Risk Factors
6.
Br J Psychiatry ; 211(3): 169-174, 2017 Sep.
Article in English | MEDLINE | ID: mdl-28684405

ABSTRACT

BackgroundSleep loss may trigger mood episodes in people with bipolar disorder but individual differences could influence vulnerability to this trigger.AimsTo determine whether bipolar subtype (bipolar disorder type I (BP-I) or II (BD-II)) and gender were associated with vulnerability to the sleep loss trigger.MethodDuring a semi-structured interview, 3140 individuals (68% women) with bipolar disorder (66% BD-I) reported whether sleep loss had triggered episodes of high or low mood. DSM-IV diagnosis of bipolar subtype was derived from case notes and interview data.ResultsSleep loss triggering episodes of high mood was associated with female gender (odds ratio (OR) = 1.43, 95% CI 1.17-1.75, P < 0.001) and BD-I subtype (OR = 2.81, 95% CI 2.26-3.50, P < 0.001). Analyses on sleep loss triggering low mood were not significant following adjustment for confounders.ConclusionsGender and bipolar subtype may increase vulnerability to high mood following sleep deprivation. This should be considered in situations where patients encounter sleep disruption, such as shift work and international travel.


Subject(s)
Bipolar Disorder/etiology , Sleep Deprivation/complications , Adolescent , Adult , Aged , Aged, 80 and over , Bipolar Disorder/classification , Bipolar Disorder/epidemiology , Female , Humans , Individuality , Male , Middle Aged , Sex Factors , Sleep Deprivation/epidemiology , United Kingdom/epidemiology , Young Adult
7.
Mol Psychiatry ; 21(9): 1290-7, 2016 09.
Article in English | MEDLINE | ID: mdl-26503763

ABSTRACT

Lithium is the mainstay prophylactic treatment for bipolar disorder (BD), but treatment response varies considerably across individuals. Patients who respond well to lithium treatment might represent a relatively homogeneous subtype of this genetically and phenotypically diverse disorder. Here, we performed genome-wide association studies (GWAS) to identify (i) specific genetic variations influencing lithium response and (ii) genetic variants associated with risk for lithium-responsive BD. Patients with BD and controls were recruited from Sweden and the United Kingdom. GWAS were performed on 2698 patients with subjectively defined (self-reported) lithium response and 1176 patients with objectively defined (clinically documented) lithium response. We next conducted GWAS comparing lithium responders with healthy controls (1639 subjective responders and 8899 controls; 323 objective responders and 6684 controls). Meta-analyses of Swedish and UK results revealed no significant associations with lithium response within the bipolar subjects. However, when comparing lithium-responsive patients with controls, two imputed markers attained genome-wide significant associations, among which one was validated in confirmatory genotyping (rs116323614, P=2.74 × 10(-8)). It is an intronic single-nucleotide polymorphism (SNP) on chromosome 2q31.2 in the gene SEC14 and spectrin domains 1 (SESTD1), which encodes a protein involved in regulation of phospholipids. Phospholipids have been strongly implicated as lithium treatment targets. Furthermore, we estimated the proportion of variance for lithium-responsive BD explained by common variants ('SNP heritability') as 0.25 and 0.29 using two definitions of lithium response. Our results revealed a genetic variant in SESTD1 associated with risk for lithium-responsive BD, suggesting that the understanding of BD etiology could be furthered by focusing on this subtype of BD.


Subject(s)
Bipolar Disorder/genetics , Carrier Proteins/genetics , Adult , Antimanic Agents/therapeutic use , Biomarkers, Pharmacological/blood , Bipolar Disorder/metabolism , Carrier Proteins/metabolism , Female , Genetic Predisposition to Disease/genetics , Genetic Variation , Genome-Wide Association Study/methods , Genotype , Humans , Lithium/metabolism , Lithium/therapeutic use , Lithium Compounds/therapeutic use , Male , Middle Aged , Polymorphism, Single Nucleotide/genetics , Risk Factors , Self Report , Sweden , United Kingdom
8.
Am J Med Genet B Neuropsychiatr Genet ; 174(8): 767-771, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28851079

ABSTRACT

Studies have suggested that Research Diagnostic Criteria for Schizoaffective Disorder Bipolar type (RDC-SABP) might identify a more genetically homogenous subgroup of bipolar disorder. Aiming to identify loci associated with RDC-SABP, we have performed a replication study using independent RDC-SABP cases (n = 144) and controls (n = 6,559), focusing on the 10 loci that reached a p-value <10-5 for RDC-SABP in the Wellcome Trust Case Control Consortium (WTCCC) bipolar disorder sample. Combining the WTCCC and replication datasets by meta-analysis (combined RDC-SABP, n = 423, controls, n = 9,494), we observed genome-wide significant association at one SNP, rs2352974, located within the intron of the gene TRAIP on chromosome 3p21.31 (p-value, 4.37 × 10-8 ). This locus did not reach genome-wide significance in bipolar disorder or schizophrenia large Psychiatric Genomic Consortium datasets, suggesting that it may represent a relatively specific genetic risk for the bipolar subtype of schizoaffective disorder.


Subject(s)
Bipolar Disorder/diagnosis , Genetic Markers , Genome-Wide Association Study , Polymorphism, Single Nucleotide , Schizophrenia/diagnosis , Bipolar Disorder/genetics , Case-Control Studies , Genetic Predisposition to Disease , Humans , Meta-Analysis as Topic , Schizophrenia/genetics
9.
Br J Psychiatry ; 206(3): 191-7, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25614532

ABSTRACT

BACKGROUND: There has been increasing interest in the association between childhood trauma and psychosis. Proposals for potential mechanisms involved include affective dysregulation and cognitive appraisals of threat. AIMS: To establish if, within bipolar disorder, childhood events show a significant association with psychosis, and in particular with symptoms driven by dysregulation of mood or with a persecutory content. METHOD: Data on lifetime-ever presence of psychotic symptoms were determined by detailed structured interview with case-note review (n = 2019). Childhood events were recorded using a self-report questionnaire and case-note information. RESULTS: There was no relationship between childhood events, or childhood abuse, and psychosis per se. Childhood events were not associated with an increased risk of persecutory or other delusions. Significant associations were found between childhood abuse and auditory hallucinations, strongest between sexual abuse and mood congruent or abusive voices. These relationships remain significant even after controlling for lifetime-ever cannabis misuse. CONCLUSIONS: Within affective disorder, the relationship between childhood events and psychosis appears to be relatively symptom-specific. It is possible that the pathways leading to psychotic symptoms differ, with delusions and non-hallucinatory symptoms being influenced less by childhood or early environmental experience.


Subject(s)
Adult Survivors of Child Abuse/psychology , Bipolar Disorder/complications , Bipolar Disorder/psychology , Psychotic Disorders/complications , Psychotic Disorders/psychology , Adolescent , Adult , Delusions/complications , Delusions/psychology , Female , Hallucinations/complications , Hallucinations/psychology , Humans , Male , Middle Aged , Risk Factors , Young Adult
10.
Br J Psychiatry ; 207(4): 328-33, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26089303

ABSTRACT

BACKGROUND: North American studies show bipolar disorder is associated with elevated rates of problem gambling; however, little is known about rates in the different presentations of bipolar illness. AIMS: To determine the prevalence and distribution of problem gambling in people with bipolar disorder in the UK. METHOD: The Problem Gambling Severity Index was used to measure gambling problems in 635 participants with bipolar disorder. RESULTS: Moderate to severe gambling problems were four times higher in people with bipolar disorder than in the general population, and were associated with type 2 disorder (OR = 1.74, P = 0.036), history of suicidal ideation or attempt (OR = 3.44, P = 0.02) and rapid cycling (OR = 2.63, P = 0.008). CONCLUSIONS: Approximately 1 in 10 patients with bipolar disorder may be at moderate to severe risk of problem gambling, possibly associated with suicidal behaviour and a rapid cycling course. Elevated rates of gambling problems in type 2 disorder highlight the probable significance of modest but unstable mood disturbance in the development and maintenance of such problems.


Subject(s)
Bipolar Disorder/complications , Depressive Disorder, Major/complications , Gambling/epidemiology , Adolescent , Adult , Affect , Aged , Female , Humans , Logistic Models , Male , Middle Aged , Psychiatric Status Rating Scales , Risk Factors , Severity of Illness Index , Sex Distribution , Suicidal Ideation , Suicide, Attempted , United Kingdom/epidemiology , Young Adult
11.
Bipolar Disord ; 17(1): 102-5, 2015 Feb.
Article in English | MEDLINE | ID: mdl-24912983

ABSTRACT

OBJECTIVES: To compare rates of bipolar episodes following miscarriage and termination with those occurring in the postpartum period. METHODS: Information in relation to pregnancy and childbirth was gathered retrospectively for 1,283 women with broadly defined bipolar disorder by interview and case-notes review. RESULTS: Rates of mania or affective psychosis were significantly higher after full-term delivery than after termination (p < 0.001) or miscarriage (p < 0.001). Rates of non-psychotic major depression were similar following full-term deliveries, miscarriages (p = 0.362), and terminations (p = 0.301). CONCLUSIONS: While women with bipolar disorder and their clinicians should be aware of the possible onset of depression in the weeks following miscarriage or termination, episodes of mania or affective psychosis are less common in comparison with the high rates observed in the postpartum period.


Subject(s)
Abortion, Legal/psychology , Abortion, Spontaneous/psychology , Bipolar Disorder , Depression/diagnosis , Postpartum Period/psychology , Puerperal Disorders , Adult , Bipolar Disorder/diagnosis , Bipolar Disorder/psychology , Diagnostic and Statistical Manual of Mental Disorders , Female , Humans , Middle Aged , Pregnancy , Puerperal Disorders/diagnosis , Puerperal Disorders/psychology , Recurrence , Retrospective Studies
12.
Epilepsy Behav ; 52(Pt A): 267-74, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26316422

ABSTRACT

It is well recognized that mood disorders and epilepsy commonly co-occur. Despite this, our knowledge regarding the relationship between epilepsy and bipolar disorder is limited. Several shared features between the two disorders, such as their episodic nature and potential to run a chronic course, and the efficacy of some antiepileptic medications in the prophylaxis of both disorders, are often cited as evidence of possible shared underlying pathophysiology. The present paper aims to review the bidirectional associations between epilepsy and bipolar disorder, with a focus on epidemiological links, evidence for shared etiology, and the impact of these disorders on both the individual and wider society. Better recognition and understanding of these two complex disorders, along with an integrated clinical approach, are crucial for improved evaluation and management of comorbid epilepsy and mood disorders.


Subject(s)
Bipolar Disorder/complications , Epilepsy/complications , Anticonvulsants/therapeutic use , Bipolar Disorder/genetics , Bipolar Disorder/psychology , Epilepsy/genetics , Epilepsy/psychology , Humans
13.
Br J Psychiatry ; 205(6): 465-72, 2014 Dec.
Article in English | MEDLINE | ID: mdl-25359927

ABSTRACT

BACKGROUND: Individuals with a mental health disorder appear to be at increased risk of medical illness. AIMS: To examine rates of medical illnesses in patients with bipolar disorder (n = 1720) and to examine the clinical course of the bipolar illness according to lifetime medical illness burden. METHOD: Participants recruited within the UK were asked about the lifetime occurrence of 20 medical illnesses, interviewed using the Schedules for Clinical Assessment in Neuropsychiatry (SCAN) and diagnosed according to DSM-IV criteria. RESULTS: We found significantly increased rates of several medical illnesses in our bipolar sample. A high medical illness burden was associated with a history of anxiety disorder, rapid cycling mood episodes, suicide attempts and mood episodes with a typically acute onset. CONCLUSIONS: Bipolar disorder is associated with high rates of medical illness. This comorbidity needs to be taken into account by services in order to improve outcomes for patients with bipolar disorder and also in research investigating the aetiology of affective disorder where shared biological pathways may play a role.


Subject(s)
Bipolar Disorder , Chronic Disease , Adult , Affect/physiology , Age of Onset , Anxiety/physiopathology , Bipolar Disorder/diagnosis , Bipolar Disorder/epidemiology , Bipolar Disorder/physiopathology , Chronic Disease/epidemiology , Chronic Disease/psychology , Comorbidity , Diagnostic and Statistical Manual of Mental Disorders , Female , Health Status Disparities , Humans , Male , Middle Aged , Psychiatric Status Rating Scales , Psychopathology , Risk Factors , Suicide, Attempted/statistics & numerical data , United Kingdom/epidemiology
14.
medRxiv ; 2024 Sep 17.
Article in English | MEDLINE | ID: mdl-38405768

ABSTRACT

Bipolar disorder (BD) is a heritable mental illness with complex etiology. While the largest published genome-wide association study identified 64 BD risk loci, the causal SNPs and genes within these loci remain unknown. We applied a suite of statistical and functional fine-mapping methods to these loci, and prioritized 17 likely causal SNPs for BD. We mapped these SNPs to genes, and investigated their likely functional consequences by integrating variant annotations, brain cell-type epigenomic annotations, brain quantitative trait loci, and results from rare variant exome sequencing in BD. Convergent lines of evidence supported the roles of genes involved in neurotransmission and neurodevelopment including SCN2A, TRANK1, DCLK3, INSYN2B, SYNE1, THSD7A, CACNA1B, TUBBP5, PLCB3, PRDX5, KCNK4, CRTC3, AP001453 . 3, TRPT1, FKBP2, DNAJC4, RASGRP1, FURIN, FES, DPH1, GSDMB, MED24 and THRA in BD. These represent promising candidates for functional experiments to understand biological mechanisms and therapeutic potential. Additionally, we demonstrated that fine-mapping effect sizes can improve performance of BD polygenic risk scores across diverse populations, and present a high-throughput fine-mapping pipeline ( https://github.com/mkoromina/SAFFARI ).

15.
Br J Psychiatry ; 206(6): 523, 2015 Jun.
Article in English | MEDLINE | ID: mdl-26034187
16.
Br J Psychiatry ; 196(3): 200-5, 2010 Mar.
Article in English | MEDLINE | ID: mdl-20194541

ABSTRACT

BACKGROUND: Only some women with recurrent major depressive disorder experience postnatal episodes. Personality and/or cognitive styles might increase the likelihood of experiencing postnatal depression. AIMS: To establish whether personality and cognitive style predicts vulnerability to postnatal episodes over and above their known relationship to depression in general. METHOD: We compared personality and cognitive style in women with recurrent major depressive disorder who had experienced one or more postnatal episodes (postnatal depression (PND) group, n=143) with healthy female controls (control group, n=173). We also examined parous women with recurrent major depressive disorder who experienced no perinatal episodes (non-postnatal depression (NPND) group, n=131). RESULTS: The PND group had higher levels of neuroticism and dysfunctional beliefs, and lower self-esteem than the control group. However, there were no significant differences between the PND and NPND groups. CONCLUSIONS: Established personality and cognitive vulnerabilities for depression were reported by women with a history of postnatal depression, but there was no evidence that any of these traits or styles confer a specific risk for the postnatal onset of episodes.


Subject(s)
Attitude , Cognition , Depression, Postpartum/psychology , Personality , Self Concept , Adaptation, Psychological , Adolescent , Adult , Depression, Postpartum/epidemiology , Disease Susceptibility/psychology , Epidemiologic Methods , Female , Humans , Life Change Events , Middle Aged , Parturition/psychology , Pregnancy , Psychiatric Status Rating Scales , United Kingdom , Young Adult
18.
Am J Med Genet B Neuropsychiatr Genet ; 153B(7): 1347-9, 2010 Oct 05.
Article in English | MEDLINE | ID: mdl-20583128

ABSTRACT

We have previously reported evidence that variation at GABA(A) receptor genes is associated with susceptibility to bipolar disorder with schizophrenia-like psychotic features (Research Diagnostic Criteria (RDC) schizoaffective disorder, bipolar type) with gene-wide significance at GABRB1, GABRA4, GABRB3, GABRA5, and GABRR3. Here we provide suggestive evidence implicating a sixth member of the gene family, GABRR1 (gene-wide P = 0.0058; experiment-wide corrected significance P = 0.052).


Subject(s)
Bipolar Disorder/genetics , Genetic Predisposition to Disease/genetics , Polymorphism, Genetic , Receptors, GABA-A/genetics , Schizophrenia/genetics , Case-Control Studies , Gene Frequency , Humans
19.
Psychiatry Res ; 284: 112748, 2020 02.
Article in English | MEDLINE | ID: mdl-31981939

ABSTRACT

The relationship of postpartum mania to episodes of mania occurring outside the perinatal period among women with bipolar disorder remains controversial. Previous studies have used between-subjects designs to compare the clinical presentations of these episodes meaning the differences, in part, may reflect between-group differences. To overcome this we have undertaken within-subject comparisons of the symptom profile of postpartum and non-postpartum manic episodes in 50 women with DSM-IV bipolar I disorder. For each woman detailed symptom information on a postpartum episode of mania and a comparison non-postpartum manic episode was collected. The occurrence of manic, psychotic and depressive symptoms in these episodes were compared. Postpartum manic episodes had a significantly higher incidence of perplexity and excessive self-reproach. Classic manic symptoms, specifically pressured speech and increased sociability, were significantly less frequent in postpartum manic episodes. Overall there were significantly fewer manic symptoms and significantly more depressive symptoms in the postpartum episodes than in the non-postpartum episodes. The mixed presentation of postpartum manic episodes suggests childbirth may act as a pathoplastic trigger in women with bipolar disorder. The differences in symptom profiles suggests further research is warranted into whether differences in treatment response exist among women experiencing postpartum and non-postpartum manic episodes.


Subject(s)
Bipolar Disorder/psychology , Postpartum Period/psychology , Pregnancy Complications/psychology , Adult , Depression/psychology , Diagnostic and Statistical Manual of Mental Disorders , Female , Humans , Parturition/psychology , Pregnancy , Severity of Illness Index , Symptom Assessment
20.
JAMA Psychiatry ; 77(3): 303-310, 2020 03 01.
Article in English | MEDLINE | ID: mdl-31751445

ABSTRACT

Importance: Insomnia, hypersomnia, and an evening chronotype are common in individuals with bipolar disorder (BD), but whether this reflects shared genetic liability is unclear. Stratifying by BD subtypes could elucidate this association and inform sleep and BD research. Objective: To assess whether polygenic risk scores (PRSs) for sleep traits are associated with BD subtypes I and II. Design, Setting, and Participants: This case-control study was conducted in the United Kingdom and Sweden with participants with BD and control participants. Multinomial regression was used to assess whether PRSs for insomnia, daytime sleepiness, sleep duration, and chronotype are associated with BD subtypes compared with control participants. Affected individuals were recruited from the Bipolar Disorder Research Network. Control participants were recruited from the 1958 British Birth Cohort and the UK Blood Service. Analyses were repeated in an independent Swedish sample from August 2018 to July 2019. All participants were of European ancestry. Exposures: Standardized PRSs derived using alleles from genome-wide association studies of insomnia, sleep duration, daytime sleepiness, and chronotype. These were adjusted for the first 10 population principal components, genotyping platforms, and sex. Main Outcomes and Measures: Association of PRSs with BD subtypes, determined by semistructured psychiatric interview and case notes. Results: The main analysis included 4672 participants with BD (3132 female participants [67.0%]; 3404 with BD-I [72.9%]) and 5714 control participants (2812 female participants [49.2%]). Insomnia PRS was associated with increased risk of BD-II (relative risk [RR], 1.14 [95% CI, 1.07-1.21]; P = 8.26 × 10-5) but not BD-I (RR, 0.98 [95% CI, 0.94-1.03]; P = .409) relative to control participants. Sleep-duration PRS was associated with BD-I (RR, 1.10 [95% CI, 1.06-1.15]; P = 1.13 × 10-5) but not BD-II (RR, 0.99 [95% CI, 0.93-1.06]; P = .818). Associations between (1) insomnia PRS and BD-II and (2) sleep-duration PRS and BD-I were replicated in the Swedish sample of 4366 individuals with BD (2697 female participants [61.8%]; 2627 with BD-I [60.2%]) and 6091 control participants (3767 female participants [61.8%]). Chronotype and daytime-sleepiness PRS were not associated with BD subtypes. Conclusions and Relevance: Per this analysis, BD subtypes differ in genetic liability to insomnia and hypersomnia, providing further evidence that the distinction between BD-I and BD-II has genetic validity. This distinction will be crucial in selecting participants for future research on the role of sleep disturbance in BD.


Subject(s)
Bipolar Disorder/genetics , Genetic Predisposition to Disease/genetics , Sleep Wake Disorders/genetics , Sleep/genetics , Adolescent , Adult , Aged , Aged, 80 and over , Case-Control Studies , Disorders of Excessive Somnolence/genetics , Female , Genome-Wide Association Study , Humans , Interview, Psychological , Male , Middle Aged , Multifactorial Inheritance/genetics , Risk Factors , Sleep Initiation and Maintenance Disorders/genetics , Young Adult
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