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Mental disorders in offspring of parents with bipolar and major depressive disorders
Caroline Vandeleur1, Stéphane Rothen, Mehdi Gholam-Rezaee
1Department of Mental Health and Psychiatry, University Hospital of Geneva. caroline.vandeleur@chuv.ch
Insights
Parental bipolar disorder (BPD) and major depressive disorder (MDD) increase offspring risk for mood and anxiety disorders. BPD in parents is linked to earlier onset and recurrent MDD in children, highlighting the impact of parental mood disorders.
Area of Science:
- Psychiatry
- Genetics
- Developmental Psychology
Background:
- Parental mental health significantly influences offspring psychopathology.
- Limited data exists on the specificity of mood disorder subtypes in parents and their impact on offspring mental health.
- Bipolar disorder (BPD) and major depressive disorder (MDD) are common parental mood disorders with potential heritable components.
Purpose of the Study:
- To investigate the association between parental mood disorder subtypes (BPD, MDD) and the risk of mental disorders in offspring.
- To examine the specificity of these associations across different offspring psychopathological outcomes.
- To explore the impact of parental mood disorder concordance on offspring mental health.
Main Methods:
- A family study involving 376 offspring (aged 6.0-17.9 years) from parents with BPD, MDD, and control parents.
- Participants were recruited from two university hospital centers in Switzerland.
- Semi-structured diagnostic interviews were conducted by psychologists blind to proband diagnoses for probands, offspring, and biological co-parents.
Main Results:
- Offspring of BPD and MDD probands showed elevated rates of mood and anxiety disorders compared to controls.
- Recurrent major depressive disorder (MDD) was significantly more frequent in offspring of BPD probands than controls.
- Parental concordance for bipolar spectrum disorders was associated with a marked increase in mood disorder rates among offspring.
Conclusions:
- Parental mood disorders, particularly BPD, are associated with a broad spectrum of psychopathology in offspring.
- The findings suggest that the episodic nature of BPD may manifest in childhood and adolescence.
- Early identification and intervention for offspring of parents with mood disorders are crucial.
Objectives:
There is limited information on the specificity of associations between parental bipolar disorder (BPD) and major depressive disorder (MDD) and the risk of psychopathology in offspring. The chief aim of the present study was to investigate the association between mood disorder subtypes in the two parents and mental disorders in the offspring.
Methods:
A total of 376 offspring (aged 6.0-17.9 years; mean=11.5years) of 72 patients with BPD (139 offspring), 56 patients with MDD (110 offspring), and 66 controls (127 offspring) participated in a family study conducted in two university hospital centers in Switzerland. Probands, offspring, and biological co-parents were interviewed by psychologists blind to proband diagnoses, using a semi-structured diagnostic interview.
Results:
Rates of mood and anxiety disorders were elevated among offspring of BPD probands (34.5% any mood; 42.5% any anxiety) and MDD probands (25.5% any mood; 44.6% any anxiety) as compared to those of controls (12.6% any mood; 22.8% any anxiety). Moreover, recurrent MDD was more frequent among offspring of BPD probands (7.9%) than those of controls (1.6%). Parental concordance for bipolar spectrum disorders was associated with a further elevation in the rates of mood disorders in offspring (64.3% both parents versus 27.2% one parent).
Conclusions:
These findings provide unique information on the broad manifestations of parental mood disorders in their offspring. The earlier onset and increased risk of recurrent MDD in the offspring of parents with BPD compared to those of controls suggests that the episodicity characterizing BPD may emerge in childhood and adolescence.
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