Is expressed emotion related to estimates of ability made by older people with cognitive impairments and their partners?

Expressed Emotion in Families of People With Dementia: A Review of Scale-Based Measures

PURPOSE

Research on the concept of expressed emotion (EE) has expanded in recent years but its role in dementia still requires elucidation. Understanding the role of EE in the dementia context could help in the development of appropriate interventions.

METHOD

The current review synthesized relevant literature to investigate the prevalence and correlates of EE status in families of people with dementia. A comprehensive search of four databases from inception to 2022 produced 2,683 papers; 18 studies met inclusion criteria.

RESULTS

The use of EE criteria differed not only across cultural contexts, but even within the same cultural context. Overall, the prevalence of EE in families with dementia compared with other psychiatric conditions was not high.

CONCLUSION

Specific changes in EE over time remain to be explored, and findings emphasize the need to carefully discriminate High EE status based on the cultural background of family members with dementia. [Journal of Gerontological Nursing, 50(2), 17-25.].

Dyadic influences on awareness of condition in people with dementia: findings from the IDEAL cohort

Introduction

The discrepancy between caregiver-ratings and self-ratings of abilities is commonly used to assess awareness in people with dementia. We investigated the contribution of caregiver and dyadic characteristics to the difference in perspective between caregiver-informants and people with dementia about difficulties experienced, when considering awareness of condition.

Methods

We conducted exploratory cross-sectional analyses using data from the IDEAL cohort. Participants were 1,038 community-dwelling people with mild-to-moderate dementia, and coresident spouse/partner caregivers. The Representations and Adjustment to Dementia Index (RADIX) checklist reporting difficulties commonly experienced in dementia was completed by 960 caregiver-informants and 989 people with dementia. Difference in scores was calculated for 916 dyads. Demographic information, cognition, informant-rated functional ability and neuropsychiatric symptoms were recorded for the person with dementia. Self-reported data were collected on mood, comorbidity, religion, importance of religion, relationship quality, and caregiver stress.

Results

For most dyads, caregivers reported more RADIX difficulties than people with dementia. Caregiver RADIX ratings were more closely associated with informant-rated functional ability and neuropsychiatric symptoms than with cognition. More RADIX difficulties and higher stress were reported by female caregivers. Greater RADIX difference was associated with more caregiver stress, and older age but less depression in people with dementia.

Conclusion

Few dyadic characteristics were important, but caregiver stress was higher where caregivers reported more RADIX difficulties and/or the difference in perspective was greater, whereas partners with dementia reported better mood. In addition to offering information about awareness of condition, the caregiver rating and difference in perspectives could indicate where more support is needed.

Effects of Long-Term Endurance Exercise and Lithium Treatment on Neuroprotective Factors in Hippocampus of Obese Rats

To investigate the effects of long-term lithium treatment and low intensity endurance exercise on brain-derived neurotrophic factor (BDNF) expression and glycogen synthase kinase 3 beta (GSK3β) activity in the hippocampus of obese rats. Fifty 10-week-old male Sprague-Dawley rats were selected. There was a control group of 10 rats (chow control group) while the other forty rats were fed on a high-fat diet for eight weeks to induce obesity. Rats were then assigned into four random groups. The rats were given 10 mg/kg lithium chloride (LiCl) dissolved in 1 mL sterile distilled water once a day, 5 times a week. The rats did 20 min of treadmill walking with an exercise intensity of 40% maximal oxygen uptake (VO₂ max) (12 m/min, slope 0%). This was performed for 20 min a day, 3 days a week. Twelve weeks of lithium treatment or endurance exercise significantly reduced body weight and body fat mass in obese rats, without showing additive effects when the treatments were given in parallel or significant toxic responses in alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels in blood and kidney and liver tissues. BDNF expression in the hippocampus was significantly increased both in exercise and lithium groups with synergistic effects found in the group where both exercise and lithium treatments were given in parallel. On the other hand, the decrease in GSK3β activity was shown only in the lithium treatment group, without showing additive effects when the treatments were given in parallel. Lithium and low-intensity endurance exercise for 12 weeks increased the expression of BDNF, a neuroprotective factor in the hippocampus of obese mice. Lithium treatment alone inhibited the activity of GSK3β. This can be interpreted as a positive indication of applicability of the two factors in the prevention of neurodegenerative diseases.

Holding on while letting go: trauma and growth on the pathway of dementia care in families

OBJECTIVES

Limited research explores the medical model of residential care in dementia from the family caregiver's perspectives.

METHOD

This study sought subjective interpretations of nine family caregivers who experienced relinquishing their status as primary caregiver to a medical model, dementia care residential setting. Following semi-structured interviews and transcription data was analysed using interpretative phenomenological analysis.

RESULTS

One superordinate theme, navigating 'system' control, overarched three subordinate themes: connecting/disconnecting, windows closing, and capacity for sensation. Navigating system control reflected participants' experience of circumnavigating a medical system fraught with hierarchical challenges inclusive of a complex maze of contradictions that appeared threatening, yet appeared comforting; authoritarian, yet often humane. For them, care of self, while advocating for a family member with dementia, required vigilance to manoeuvre a system of care that imposed its uninvited authority at will. Connection/disconnection highlights the enduring struggle for inclusivity in caregiving despite the omnipresent trauma of windows closing. Psychological growth came to these participants through an unexpected capacity for sensation which offered a unique lens to communication with the family member with dementia primarily through sensory exchange.

CONCLUSIONS

Models of dementia care and therapeutic interventions could inclusively involve dementia family caregivers who may be experiencing traumatic distress, and associated guilt, stigma, loss, and grief. Co-existing psychological wellbeing, however, is possible when family members are encouraged to transition communication to sensory awareness and exchange as windows close.

Relationship Quality and Distress in Caregivers of Persons With Dementia: A Cross-Sectional Study

This cross-sectional study aimed to investigate the relationship between caregivers and care receivers, defined as home-dwelling family members with dementia. We used a self-rating questionnaire, the Felt Expressed Emotion Rating Scale (FEERS; 6 simple questions), to measure caregiver perceptions of the care receiver's criticisms (CCs) and emotional overinvolvement (EOI) toward the caregiver. We performed factor analyses to rank single items on the FEERS pertaining to CC and EOI. We included 208 caregiver/care receiver pairs. Logistic regression analyses tested associations between FEERS items and caregiver and care receiver variables. The main contributors to caregiver perceptions of CC were the caregiver's own distress and the amount of time spent with the care receiver. Socially distressed caregivers perceived the care receiver as emotionally overinvolved. When offering a psychosocial intervention, a tailored program should target the caregiver's perceived relationship with the family member and the caregiver's distress. The program should also endeavor to give the caretaker more opportunities for leisure time.

Experience of companionship among family caregivers of persons with dementia: A qualitative study

We examined how caregivers experienced the influence of dementia on their relationships with afflicted family members. Family caregivers (n = 15; 11 women and four men; age 39–92 years) of people with dementia participated in semi-structured interviews. The data were analyzed according to Kvale and Brinkman. The analysis identified one overarching theme, experiences of companionship, and four subthemes, namely experiences of loss and loneliness; role change; communication alteration; and caring considerations and coping resources. The caregivers described their companionship with the family member, including warm feelings of reciprocity, as well as contradictory feelings, such as feelings of being burdened. They expressed a desire to continue caring for their relative and emphasized the positive aspects of their relationship. Knowledge about dementia, together with a good relationship with their ill family member, facilitated the caring role. These results highlight the importance of receiving information about dementia-related challenges and the implications of being a caregiver.

Inflammation and insulin/IGF-1 resistance as the possible link between obesity and neurodegeneration

Obesity is a growing epidemic that contributes to several brain disorders including Alzheimer's, Parkinson's, and Huntington's diseases. Obesity could promote these diseases through several different mechanisms. Here we review evidence supporting the involvement of two recently recognized factors linking obesity with neurodegeneration: the induction of pro-inflammatory cytokines and onset of insulin and insulin-like growth factor 1 (IGF-1) resistance. Excess peripheral pro-inflammatory mediators, some of which can cross the blood brain barrier, may trigger neuroinflammation, which subsequently exacerbates neurodegeneration. Insulin and IGF-1 resistance leads to weakening of neuroprotective signaling by these molecules and can contribute to onset of neurodegenerative diseases.