Harsh parent-child conflict is associated with decreased anti-inflammatory gene expression and increased symptom severity in children with asthma

Area of Science:

• Pediatric respiratory health
• Psychoneuroimmunology
• Molecular biology

Background:

• Asthma affects millions of children, with family stressors linked to symptom exacerbation.
• Stressful experiences may alter children's immune systems, worsening airway inflammation.
• Parent-child conflict's impact on immune signaling in pediatric asthma requires further investigation.

Purpose of the Study:

• To examine the association between observed parent-child conflict and gene expression of key anti-inflammatory signaling molecules.
• To investigate the relationship between harsh interactions and children's asthma symptom severity.
• To explore the role of immune system gene expression in mediating the effects of family conflict on pediatric asthma.

Main Methods:

• Fifty-seven children and parents completed a conflict task with behavioral coding for harsh and supportive interactions.
• Children reported perceived parental support and daily asthma symptoms over two weeks.
• Leukocyte messenger RNA expression for glucocorticoid and β2-adrenergic receptors was measured.

Main Results:

• Harsh conflict behaviors were significantly associated with decreased expression of both glucocorticoid and β2-adrenergic receptors.
• Decreased gene expression correlated with more severe asthma symptoms in children.
• Supportive behaviors and perceived parental support did not show significant associations with gene expression or asthma symptoms.

Conclusions:

• Harsh parent-child interactions are linked to the downregulation of critical anti-inflammatory signaling pathways in children with asthma.
• These molecular changes may contribute to increased airway inflammation and breathing difficulties.
• Children with asthma experiencing maltreatment may be vulnerable to immune cell transcriptional changes that worsen their condition.