Family Matters: Trauma and Quality of Life in Family Members of Individuals With Prader-Willi Syndrome

The quality of life and its inter-relationship with posttraumatic stress disorder and social support in two post-conflict communities in Nigeria

The study aimed to compare the quality of life (QoL) in two communities with different exposures to conflict and investigate the inter-relationship between posttraumatic stress disorder (PTSD), social support, and QoL. This is a cross-sectional with 413 participants. Study instruments included the PTSD module of the Composite International Diagnostic Interview (CIDI), the World Health Organization Quality of Life BREF (WHOQoL-BREF), and the Multidimensional Scale of Perceived Social Support (MSPSS). The family domain of social support was protective of both PTSD and QoL. Except for the relationship between community's location and the physical subscale of the QoL, a hierarchical regression analysis showed that all the independent variables were significantly associated with the QoL domains. Direct exposure to crises impaired QoL more than areas indirectly exposed. PTSD and the family domain of social support play a significant role in the QoL outcome. This suggests that therapeutic intervention to improve QoL should target these key variables.

The relationship between endogenous oxytocin and vasopressin levels and the Prader-Willi syndrome behaviour phenotype

Background

Oxytocin and vasopressin systems are altered in Prader Willi syndrome (PWS). However, investigations into endogenous oxytocin and vasopressin levels as well as clinical trials evaluating the effect of exogenous oxytocin on PWS symptoms have had mixed results. It is also unknown whether endogenous oxytocin and vasopressin levels are associated with certain PWS behaviours.

Method

We compared plasma oxytocin and vasopressin and saliva oxytocin levels in 30 adolescents and adults with PWS to 30 typically developing age-matched controls. We also compared neuropeptide levels between gender and genetic subtypes within the PWS cohort and examined the relationship between neuropeptide levels and PWS behaviours.

Results

While we did not measure a group difference in plasma or saliva oxytocin levels, plasma vasopressin was significantly lower in individuals with PWS compared to controls. Within the PWS cohort, saliva oxytocin levels were higher in females compared to males and individuals with the mUPD compared to the deletion genetic subtype. We also found the neuropeptides correlated with different PWS behaviours for males and females and for genetic subtypes. For the deletion group, higher plasma and saliva oxytocin levels were related to fewer behaviour problems. For the mUPD group, higher plasma vasopressin levels were related to more behaviour problems.

Conclusion

These findings support existing evidence of a vasopressin system defect in PWS and for the first time identify potential differences in the oxytocin and vasopressin systems across PWS genetic subtypes.