Community-Engaged Research With Latino Dementia Caregivers: Overcoming Challenges in Community Advisory Board Development.

BACKGROUND AND OBJECTIVES: Latinos caring for a person with Alzheimer's disease and related dementias (ADRD) have the highest prevalence of caregiving. Yet, they are less likely to benefit from evidence-based interventions given their continued underrepresentation in ADRD-related research. Community advisory boards (CABs) have the potential to address barriers to research for underrepresented communities; however, there are complexities to establishing and sustaining CABs. This article describes how our work addressed challenges in CABs related to unbalanced power relations, language barriers, the value of time, and low research knowledge and health literacy. RESEARCH DESIGN AND METHODS: Nine Latino CAB members, including older Latino caregivers, were trained in a comprehensive program designed to increase knowledge about health research methods and ethics, cognitive health, and cultural adaptation methods. Members completed pre- and post-training measures of Alzheimer's disease knowledge, attitudes, and beliefs toward research, and a satisfaction survey. RESULTS: Results from the satisfaction questionnaire indicated that the program was well received. CAB members increased their knowledge regarding the management of behavioral and psychological symptoms of dementia and dementia-associated risk factors and treatment. Positive changes in members' attitudes toward research included increased willingness to participate in trials and subject protection measures. DISCUSSION AND IMPLICATIONS: Formalized training in research conduct and ethics and health literacy is a promising strategy to reduce challenges in establishing and maintaining CABs and can also optimize CAB impact to address gaps in older Latino ADRD caregiving research.

Recruiting Socially Disconnected Latinos Caring for a Person with Alzheimer's Disease and Related Dementias During the COVID-19 Pandemic: Lessons Learned.

OBJECTIVES: The purpose of this article is to present conceptual and methodological challenges to recruitment strategies in enrolling socially disconnected middle-aged and older Latino caregivers of a loved one with Alzheimer's disease and related dementias (ADRD). METHODS: Middle-aged and older Latino ADRD caregivers were recruited into two early stage, intervention development studies during the COVID-19 pandemic via online or in-person methods. Recruitment criteria included Latino ADRD caregivers over the age of 40 reporting elevated loneliness on the UCLA 3-item Loneliness Scale (LS) during screening. RESULTS: Middle-aged, Latino caregivers were recruited predominantly from online methods whereas older caregivers were mostly recruited from in-person methods. We report challenges identifying socially disconnected Latino caregivers using the UCLA 3-item LS. CONCLUSIONS: Our findings support previously reported disparities in recruitment by age and language and suggest further methodological considerations to assess social disconnection among Latino caregivers. We discuss recommendations to overcome these challenges in future research. CLINICAL IMPLICATIONS: Socially disconnected Latino ADRD caregivers have an elevated risk for poor mental health outcomes. Successful recruitment of this population in clinical research will ensure the development of targeted and culturally sensitive interventions to improve the mental health and overall well-being of this marginalized group.

Subjective memory in adults over 50 years of age: associations with affective and physiological markers of emotion regulation.

OBJECTIVES: To examine associations among subjective memory reports, psychophysiological markers of emotion regulation, and cognitive performance in healthy adults over 50 years of age. METHOD: A cross-sectional laboratory study was conducted with healthy, community-dwelling, non-depressed adults (M age = 60.4 years, SD = 8.4). The Metamemory in Adulthood (MIA) questionnaire provided reports of subjective memory capacity and stability (versus decline) and anxiety about memory. Poorer emotion regulation was marked by greater negative affect (NA) and lower high frequency heart rate variability (HF-HRV) responses to a challenging working memory task. Regression models were used to identify associations between subjective memory and emotion regulation markers, and structural equation modeling was used to explore whether emotion regulation mediated associations between subjective memory and objective task performance. RESULTS: A total of 115 participants were included in the final sample. Subjective memory decline (indicated by lower scores on memory stability) was associated with lower HF-HRV response and worse working memory performance. Poorer subjective memory capacity and more anxiety about memory were both associated with greater negative affect in response to the working memory task. There was an indirect effect of subjective memory capacity on working memory performance through negative affect response. CONCLUSIONS: The findings here suggest that worse subjective memory may signal reduced capacity for emotion regulation. Along with known cognitive risks of depression and anxiety, more subtle emotion regulation difficulties may be involved in pathways of poor cognitive aging.

Dysregulation of inflammation, neurobiology, and cognitive function in PTSD: an integrative review.

Compelling evidence from animal and human research suggest a strong link between inflammation and posttraumatic stress disorder (PTSD). Furthermore, recent findings support compromised neurocognitive function as a key feature of PTSD, particularly with deficits in attention and processing speed, executive function, and memory. These cognitive domains are supported by brain structures and neural pathways that are disrupted in PTSD and which are implicated in fear learning and extinction processes. The disruption of these supporting structures potentially results from their interaction with inflammation. Thus, the converging evidence supports a model of inflammatory dysregulation and cognitive dysfunction as combined mechanisms underpinning PTSD symptomatology. In this review, we summarize evidence of dysregulated inflammation in PTSD and further explore how the neurobiological underpinnings of PTSD, in the context of fear learning and extinction acquisition and recall, may interact with inflammation. We then present evidence for cognitive dysfunction in PTSD, highlighting findings from human work. Potential therapeutic approaches utilizing novel pharmacological and behavioral interventions that target inflammation and cognition also are discussed.

Case study of an adaptation and implementation of a Diabetes Prevention Program for individuals with serious mental illness.

The Diabetes Prevention Program (DPP) is an evidence-based lifestyle intervention developed to decrease the risk for type 2 diabetes and promote weight loss in individuals at risk for diabetes. Individuals with serious mental illness have a greater risk for developing diabetes compared with the general population. In this article, the authors provide a detailed description of the adaptation process of the DPP for individuals with serious mental illness (DPP-SMI). The adaptation process was based on a cultural adaptation framework for modifying evidence-based interventions. To assess the effectiveness of the DPP-SMI, 11 individuals from a community mental health residential agency completed a 22-session pilot study of the adapted program and provided physiological measures before and after the intervention. As primary outcomes, participants were expected to report decreased body weight and increased physical activity per week. Completers had an average weight loss of 19 lbs (8%) and their physical activity increased from 161 to 405 min per week. These preliminary results together with participants' feedback informed further refinement of the DPP-SMI. This case study supports that individuals with serious mental illness can benefit from the DPP-SMI, which is tailored to meet the unique needs of this population group.

Candesartan ameliorates impaired fear extinction induced by innate immune activation.

Patients with post-traumatic stress disorder (PTSD) tend to show signs of a relatively increased inflammatory state suggesting that activation of the immune system may contribute to the development of PTSD. In the present study, we tested whether activation of the innate immune system can disrupt acquisition or recall of auditory fear extinction using an animal model of PTSD. Male adolescent rats received auditory fear conditioning in context A. The next day, an intraperitoneal injection of lipopolysaccharide (LPS; 100 µg/kg) prior to auditory fear extinction in context B impaired acquisition and recall of extinction. LPS (100 µg/kg) given after extinction training did not impair extinction recall suggesting that LPS did not affect consolidation of extinction. In contrast to cued fear extinction, contextual fear extinction was not affected by prior injection of LPS (100 µg/kg). Although LPS also reduced locomotion, we could dissociate the effects of LPS on extinction and locomotion by using a lower dose of LPS (50 µg/kg) which impaired locomotion without affecting extinction. In addition, 15 h after an injection of 250 µg/kg LPS in adult rats, extinction learning and recall were impaired without affecting locomotion. A sub-chronic treatment with candesartan, an angiotensin II type 1 receptor blocker, prevented the LPS-induced impairment of extinction in adult rats. Our results demonstrate that activation of the innate immune system can disrupt auditory fear extinction in adolescent and adult animals. These findings also provide direction for clinical studies of novel treatments that modulate the innate immune system for stress-related disorders like PTSD.