A longitudinal resting-state functional connectivity analysis on trauma exposure and post-traumatic stress symptoms in older individuals

BACKGROUND

Given the present demographic shift towards an aging society, there is an increased need to investigate the brain's functional connectivity in the context of aging. Trauma exposure and post-traumatic stress disorder (PTSD) symptoms are factors known to impact healthy aging and have been reported to be associated with functional connectivity differences. In the present study, we examined and compared differences in within-default mode network (DMN), within-salience network (SN) and between-DMN-SN functional connectivity, between trauma-exposed individuals with and without PTSD symptoms as well as non-traumatized individuals in a non-clininical older adult sample.

METHODS

Resting state functional MRI and behavioral data is taken from the Longitudinal Healthy Aging Brain Database Project (LHAB). For the present analysis, participants who completed the questionnaires on trauma exposure and PTSD symptoms (N = 110 individuals of which n = 50 individuals reported previous trauma exposure and n = 25 individuals reported PTSD symptoms; mean age = 70.55 years, SD = 4.82) were included.

RESULTS

The reporting of PTSD symptoms relative to no symptoms was associated with lower within-DMN connectivity, while on a trend level trauma-exposed individuals showed higher within-SN connectivity compared to non-trauma exposed individuals. Consistent with existing models of healthy aging, between-DMN-SN functional connectivity showed an increase across time in older age.

CONCLUSION

Present results suggest that alterations in within-DMN and within-SN functional connectivity also occur in non-treatment seeking older adult populations with trauma exposure and in association with PTSD symptoms. These changes manifest, alongside altered between-DMN-SN functional connectivity, in older age supposedly independent of aging-related functional desegregation.

From Pathology to Intervention and Beyond. Reviewing Current Evidence for Treating Trauma-Related Disorders in Later Life

Background

An emerging body of empirical research on trauma-focused interventions for older adults experiencing symptoms of posttraumatic stress disorder or PTSD has yielded encouraging results. Nevertheless, up to date, the evidence remains scattered and is developed within rather specific groups, while studies have focused mostly on individual psychopathology, overlooking the relevance of resilience and recovering in one's social environment.

Objective

This study aims at summarizing the emerging evidence on treating trauma-related disorders in older adults, followed by implications for clinical practice and future research. Specifically, the following research questions are addressed: Which factors may optimize access to intervention, what treatment benefits can be realized, and how to improve resilience by using individual as well as community-oriented approaches?

Methods

A systematic literature research of intervention studies on PTSD among older adults, published between 1980 and December 2021, was expanded by cross-referencing, summarized in a narrative synthesis and supplemented with a clinical vignette reflecting qualitative outcomes.

Results

Five RCTs compared varying types of trauma-focused Cognitive Behavioral Therapy with non-trauma-focused control conditions. From one of them, qualitative results were reported as well. The most recent studies reported encouraging results, confirming the suggestion that evidence-based psychotherapy for PTSD can be safely and effectively used with older adults.

Conclusions

Since evidence-based psychotherapy for PTSD can be safely and effectively used with older adults, new avenues for practice and research may be found in a resilience perspective and a public mental health framework.

Sex and age differences in ICD-11 PTSD and complex PTSD: An analysis of four general population samples

BACKGROUND

Posttraumatic stress disorder (PTSD) is traditionally understood as a disorder that occurs more commonly in women than in men, and in younger age groups than in older age groups. The objective of this study was to determine if these patterns are also observed in relation to International Classification of Diseases (ICD-11) PTSD and complex PTSD (CPTSD).

METHODS

Secondary data analysis was performed using data collected from three nationally representative samples from the Republic of Ireland (N = 1,020), the United States (N = 1,839), and Israel (N = 1,003), and one community sample from the United Kingdom (N = 1,051).

RESULTS

Estimated prevalence rates of ICD-11 PTSD were higher in women than in men in each sample, and at a level consistent with existing data derived from Diagnostic and Statistics Manual of Mental Disorders (DSM)-based models of PTSD. Furthermore, rates of ICD-11 PTSD were generally lower in older age groups for men and women. For CPTSD, there was inconsistent evidence of sex and age differences, and some indication of a possible interaction between these two demographic variables.

CONCLUSIONS

Despite considerable revisions to PTSD in ICD-11, the same sex and age profile was observed to previous DSM-based models of PTSD. CPTSD, however, does not appear to show the same sex and age differences as PTSD. Theoretical models that seek to explain sex and age differences in trauma-related psychopathology may need to be reconsidered given the distinct effects for ICD-11 PTSD and CPTSD.