Perceived Social Support and Interpersonal Functioning as Predictors of Treatment Response Among Depressed Older Adults

Impacts of inflammatory cytokines on depression: a cohort study

BACKGROUND

Inflammatory factors are associated with depression. We seek to investigate the correlation between inflammatory cytokines and prognosis of depression or suicidal ideation and behavior at 3 months in depression patients.

METHODS

Eighty-two depressed outpatients were recruited and treated as usual. Plasma cytokines were measured at baseline. Patients were followed up with Patient Health Questionnaire-9 and suicidal ideation and behavior according to the item 3 of Hamilton depression scale for 3 months.

RESULTS

Compared to the depression patients with low level of interleukin-1β, the high one had severe depressive symptoms at month 2 and 3 (B 0.92, P < 0.01; B 0.86, P = 0.02; respectively). The incidence of suicidal ideation or behavior was 18.3% at 3 months. Depression patients with high levels of tumor necrosis factor-α showed high risk of suicidal ideation and behavior than the low one (OR 2.16, 95% CI 1.00-4.65, P = 0.04).

CONCLUSIONS

High levels of interleukin-1β and tumor necrosis factor-α were predictive of middle-term severe depressive symptoms and suicidal ideation and behavior respectively.

Altered reward network responses to social touch in major depression

BACKGROUND

Social touch is an integral part of social relationships and has been associated with reward. Major depressive disorder (MDD) is characterized by severe impairments in reward processing, but the neural effects of social touch in MDD are still elusive. In this study, we aimed to determine whether the neural processing of social touch is altered in MDD and to assess the impact of antidepressant therapy.

METHODS

Before and after antidepressant treatment, 53 MDD patients and 41 healthy controls underwent functional magnetic resonance imaging (fMRI) while receiving social touch. We compared neural responses to social touch in the reward network, behavioral ratings of touch comfort and general aversion to interpersonal touch in patients to controls. Additionally, we examined the effect of treatment response on those measures.

RESULTS

Clinical symptoms decreased after treatment and 43.4% of patients were classified as responders. Patients reported higher aversion to interpersonal touch and lower comfort ratings during the fMRI paradigm than controls. Patients showed reduced responses to social touch in the nucleus accumbens, caudate nucleus and putamen than controls, both before and after treatment. Contrary to our hypotheses, these effects were independent of touch velocity. Non-responders exhibited blunted response in the caudate nucleus and the insula compared to responders, again irrespective of time.

CONCLUSIONS

These findings suggest altered striatal processing of social touch in MDD. Persistent dysfunctional processing of social touch despite clinical improvements may constitute a latent risk factor for social withdrawal and isolation.

Improving social reward responsivity and social connectedness in psychotherapies for late-life depression: Engage & Connect as an example

Psychotherapies are effective in reducing late-life depression. Yet, about half of patients remain depressed at treatment end. Advances in neuroscience can inform simplified interventions that target key brain networks impacted by depression. Behavioral activation therapies that increase social connectedness may improve social reward responsivity and alter abnormalities of the Positive Valence System (PVS). Engage & Connect is an example for a scalable and simple neuroscience-informed psychotherapy, aimed to improve PVS functions and social reward responsivity by increasing engagement in rewarding social activities. Interventions that improve social reward responsivity can be promising first-line treatments for late-life depression in the community.

The association between perceived social support and cognition in older adults with and without multiple sclerosis

BACKGROUND

Advances in treatments for Multiple Sclerosis (MS) have resulted in a growing number of aging individuals with MS. Research has shown that perceived social support has protective effects against age-related cognitive decline but no study to date has examined the relationship between perceived social support and cognition in older adults with MS. The current study addressed this gap in knowledge examining the association between perceived social support and cognition in older adults with and without MS.

METHODS

Participants were older adults with MS (n = 67, mean age = 64.75 years;%female =  64.2) and controls (n = 71, mean age = 68.25 years;%female = 57.7) Linear regression models examined the associations of total and domain scores of perceived social support with cognition in the entire sample, and then stratified by group status.

RESULTS

Analyses revealed that total perceived social support, emotional/informational support, and positive social interaction were associated with cognition in the total sample. In stratified analyses, emotional/informational support was significantly associated with cognition in the MS group; however, this association became insignificant when analyses adjusted for depressive symptoms. Positive social interaction was significantly associated with cognition in the control group. Notably, this association remained significant even after adjusting for depressive symptoms.

CONCLUSION

These findings suggest that distinct dimensions of perceived social support may have differential relationships with cognitive function in older adults with MS and healthy controls.

Psychometric properties of the German version of the multidimensional perceived social support scale

BACKGROUND

Social support can help older persons to cope with stressful situations. Sheltered housing facilities in German speaking countries therefore aim to promote social support for their residents. The MSPSS is a brief instrument to measure perceived social support, but its psychometric properties have not yet been investigated in a sample of German speaking older persons.

OBJECTIVES

To determine the psychometric properties of the German version of the MSPSS for older persons METHODS: In a cross-sectional study, residents of sheltered housing in Austria were asked to complete the MSPSS and to indicate the frequency of contacts to family and friends. Validity of the scale was investigated by exploratory and confirmatory factor analysis as well as by their correlations with frequency of contacts to family and friends. Reliability was determined by Cronbach's Alpha and intraclass correlations for repeated measurements.

RESULTS

Exploratory factor analysis yielded a three-factor solution for the MSPSS, which was, however, only partially supported by confirmatory factor analysis. Correlations with frequency of contact to family and friends partly confirmed the assumptions about the relationships between these factors and the corresponding groups of persons. Cronbach's Alpha was high, and intraclass correlations for most items ranged from fair to good.

CONCLUSIONS

The incomplete congruence between the theoretical assumptions regarding the scale and the results of the factor analysis is presumably due to overlapping content between the dimensions of the MSPSS, which can be remedied by reformulating some items.

IMPLICATIONS FOR PRACTICE

A slightly modified version of the MSPSS should be used to assess social support in sheltered housing.

Biological factors influencing depression in later life: role of aging processes and treatment implications

Late-life depression occurring in older adults is common, recurrent, and malignant. It is characterized by affective symptoms, but also cognitive decline, medical comorbidity, and physical disability. This behavioral and cognitive presentation results from altered function of discrete functional brain networks and circuits. A wide range of factors across the lifespan contributes to fragility and vulnerability of those networks to dysfunction. In many cases, these factors occur earlier in life and contribute to adolescent or earlier adulthood depressive episodes, where the onset was related to adverse childhood events, maladaptive personality traits, reproductive events, or other factors. Other individuals exhibit a later-life onset characterized by medical comorbidity, pro-inflammatory processes, cerebrovascular disease, or developing neurodegenerative processes. These later-life processes may not only lead to vulnerability to the affective symptoms, but also contribute to the comorbid cognitive and physical symptoms. Importantly, repeated depressive episodes themselves may accelerate the aging process by shifting allostatic processes to dysfunctional states and increasing allostatic load through the hypothalamic-pituitary-adrenal axis and inflammatory processes. Over time, this may accelerate the path of biological aging, leading to greater brain atrophy, cognitive decline, and the development of physical decline and frailty. It is unclear whether successful treatment of depression and avoidance of recurrent episodes would shift biological aging processes back towards a more normative trajectory. However, current antidepressant treatments exhibit good efficacy for older adults, including pharmacotherapy, neuromodulation, and psychotherapy, with recent work in these areas providing new guidance on optimal treatment approaches. Moreover, there is a host of nonpharmacological treatment approaches being examined that take advantage of resiliency factors and decrease vulnerability to depression. Thus, while late-life depression is a recurrent yet highly heterogeneous disorder, better phenotypic characterization provides opportunities to better utilize a range of nonspecific and targeted interventions that can promote recovery, resilience, and maintenance of remission.

The multiple mediating effect of family health and perceived social support on depressive symptoms in older adults: A cross-sectional national survey in China

BACKGROUND

Depression harms older adults' physical health and quality of life, especially for those with disabilities. This study aims to investigate the epidemiological characteristics of depressive symptoms in older adults and influencing factors involving neuroticism in China.

METHODS

A multistage random sampling method was adopted to recruit older adults. We conducted a multiple mediating analysis to explore how overall family health and perceived social support affect the relationship between neuroticism and depressive symptoms in older adults.

RESULTS

A total of 1122 older adults were included in this study, and 529 individuals reported suffering from depressive symptoms (47.1 %). Mediation analysis results indicated that neuroticism had a direct predictive effect on depressive symptoms in older adults. Family health and perceived social support partly mediated the relationship between neuroticism and depressive symptoms in older adults. Moreover, depressive symptoms in older adults with high neuroticism was directly affected by decreasing family health and indirectly and cumulatively aggravated by the mediation of lower perceived social support.

LIMITATIONS

The cross-sectional study design limits the conclusion about causation and directionality.

CONCLUSIONS

Family health and perceived social support can prevent depressive symptoms in older adults with high neuroticism.

Predicting Medication Nonadherence in Older Adults With Difficult-to-Treat Depression in the IRL-GRey Randomized Controlled Trial

OBJECTIVE

Nonadherence to antidepressants interferes with optimal treatment of late-life depression. This analysis examines clinical and treatment factors predicting medication nonadherence in difficult-to-treat late-life depression.

METHODS

Secondary analysis of data from a clinical trial of antidepressant pharmacotherapy for Major Depressive Disorder in 468 adults aged 60+ years. All participants received venlafaxine XR for 12 weeks. Nonremitters were randomized to augmentation with either aripiprazole or placebo for 12 additional weeks. Medication adherence was assessed 14 times over 24 weeks. The analyses examined sociodemographic, clinical, and treatment factors that may predict antidepressant nonadherence during early (weeks 1-6), late (weeks 7-12), and augmentation (weeks 13--24) treatment.

RESULTS

Poor cognitive function and early response were predictive of early nonadherence. Poor cognitive function and prior nonadherence were predictive of late nonadherence. Living alone was associated with nonadherence both late and during augmentation treatment.

CONCLUSION

Future studies should consider the role of early response and cognitive function to improve antidepressant adherence, particularly among older adults who live alone.

The relationship between living arrangements and depression among older adults in Shandong, China: The mediating role of social support

BACKGROUND

Living arrangements and social support have an impact on depression among older adults. However, the underlying mechanism between those variables remains unknown. This study aims to investigate the mediating role of social support in the relationship between living arrangements and depression among older adults.

MATERIALS AND METHODS

Multi-stage stratified sampling method was used to select 3,859 older adults from Taian City, Shandong Province, China, for cross-sectional investigation. Living arrangements were measured by a question. Social support and depression were measured using the Multidimensional Scale of Perceived Social Support and Patient Health Questionnaire-9. Multiple linear regression models were used to assess the relationship between living arrangements and depression and the possible influence of social support on the relationship between living arrangements and depression.

RESULTS

Statistics showed that 15.08% of older adults lived alone. After controlling for covariates, living arrangements (ß = 0.45, t = 2.87, P < 0.01) and social support (ß =-0.08, t =-16.93, P < 0.001) were significantly associated with depression. The linear regression model showed that social support mediated the relationship between living arrangements and depression, and the mediating effect accounted for 18.20% of the total effect.

CONCLUSION

This study revealed that living arrangements played an essential role in indirectly predicting depression in older adults through social support. This provided evidence for how to reduce depression in older adults.