Risk factors for frontotemporal dementia. / Risikofaktorer for frontotemporal demens.

BAKGRUNN: Risikofaktorer for frontotemporal demens er lite kartlagt. Formålet med denne artikkelen var å gi en oppdatert oversikt over modifiserbare risikofaktorer for frontotemporal demens og vurdere kunnskapsgrunnlaget for kliniske anbefalinger for å redusere risiko for sykdommen. KUNNSKAPSGRUNNLAG: Det ble utført søk i basene PsychInfo, Embase, PubMed og Cochrane i perioden mai 2016-april 2017. Søket ga totalt 137 artikler. 101 artikler ble ekskludert fordi de kun omhandlet genetiske aspekter ved frontotemporal demens og ikke modifiserbare risikofaktorer. Etter å ha lest 36 artikler i fulltekst inkluderte vi 12 artikler som enten var oversiktsartikler eller originalstudier. RESULTATER: Enkelte studier viste sammenheng mellom modifiserbare risikofaktorer og utvikling av frontotemporal demens. I én studie fant man at diabetes ga økt risiko. Tre studier viste at hodetraume kan gi økt risiko for frontotemporal demens og at forekomsten av traumatisk hodeskade var signifikant høyere hos pasienter med frontotemporal demens enn andre former for demens. Autoimmun sykdom kan være forbundet med økt risiko for primær progressiv afasi, en undergruppe av frontotemporal demens. FORTOLKNING: Litteraturen indikerte sammenheng mellom diabetes, hodetraume, autoimmun sykdom og frontotemporal demens. Det finnes per i dag ikke tilstrekkelig kunnskap for å fremme anbefalinger om livsstilsendringer for å forebygge frontotemporal demens på befolkningsnivå.

Frontotemporal Dementia: An Updated Clinician's Guide.

Today, frontotemporal dementia (FTD) remains one of the most common forms of early-onset dementia, that is, before the age of 65, thus posing several diagnostic challenges to clinicians since symptoms are often mistaken for psychiatric or neurological diseases causing a delay in correct diagnosis, and the majority of patients with FTD present with symptoms at ages between 50 and 60. Genetic components are established risk factors for FTD, but the influence of lifestyle, comorbidity, and environmental factors on the risk of FTD is still unclear. Approximately 40% of individuals with FTD have a family history of dementia but less than 10% have a clear autosomal dominant pattern of inheritance. Lack of insight is often an early clue to FTD. A tailored treatment option at an early phase can mitigate suffering and improve patients' and caregivers' quality of life.

Association of psychological distress late in life and dementia-related mortality.

OBJECTIVE: It is not fully understood how subjective feelings of psychological distress prognosticate dementia. Our aim was to investigate the association between self-reported psychological distress and risk of dementia-related mortality. METHOD: We included 31,043 eligible individuals between the ages of 60 and 80 years, at time of examination, from the CONOR (Cohort of Norway) database. They were followed for a period of 17.4 years (mean 11.5 years). The CONOR Mental Health Index, a seven-item self-report scale was used. A cut-off score equal to or above 2.15 on the scale denoted psychological distress. Cox regression was used to assess the association between psychological distress and risk of dementia-related mortality. RESULTS: Total number of registered deaths was 11,762 and 1118 (9.5%) were classified as cases of dementia-related mortality. We found that 2501 individuals (8.1%) had psychological distress, of these, 119 (10.6%) had concomitant dementia-related mortality. Individuals with psychological distress had an increased risk of dementia-related mortality HR = 1.52 (95% confidence interval (CI) 1.25-1.85) after adjusting for age, gender and education. The association remained significant although attenuated when implemented in a full adjusted model, including general health status, smoking, obesity, hypertension, diabetes and history of cardiovascular disease; hazard ratio, HR = 1.30 (95% CI 1.06-1.59). CONCLUSION: Our results indicate that psychological distress in elderly individuals is associated with increased risk of dementia-related mortality. Individuals at increased risk of dementia may benefit from treatments or interventions that lessen psychological distress, but this needs to be confirmed in future clinical studies.

Interaction of Apolipoprotein E Genotypes, Lifestyle Factors and Future Risk of Dementia-Related Mortality: The Cohort of Norway (CONOR).

BACKGROUND/AIMS: Our aims were two-fold: firstly, to investigate the association and interaction between apolipoprotein E (ApoE), lifestyle risk factors and dementia-related mortality and, secondly, to examine if using dementia-related mortality yielded comparable risk estimates for the ApoE genotypes as reported in studies using a clinical dementia diagnosis as the end point. METHODS: We used a nested case-control study with 561 cases drawn from dementia deaths in the Cohort of Norway (CONOR) and 584 alive controls. RESULTS: ApoE ε4 carriers were at increased risk of dementia-related mortality compared to noncarriers [odds ratio (OR) 2.46, 95% confidence interval (CI) 1.93-3.13], and ε4 homozygotes were at particularly high risk (OR 7.86, 95% CI 3.80-13.8), while the ε2 type was associated with a lower risk. The highest risk of dementia-related mortality was found among ε4 carriers with more lifestyle risk factors (ε4 carriers who were smokers, hypertensive, physically inactive and diabetics) versus ε4 noncarriers without lifestyle risk factors (OR 15.4, 95% CI 4.37-52.4). The increased risk was additive, not multiplicative. CONCLUSIONS: Ensuring a healthy lifestyle is important to be able to prevent dementia in populations at large, but especially for ε4 carriers. Using dementia mortality gives comparable results for the ApoE-dementia association as studies using clinical dementia diagnoses.

People's interest in brain health testing: Findings from an international, online cross-sectional survey.

Brain health entails mental wellbeing and cognitive health in the absence of brain disorders. The past decade has seen an explosion of tests, cognitive and biological, to predict various brain conditions, such as Alzheimer's Disease. In line with these current developments, we investigated people's willingness and reasons to-or not to-take a hypothetical brain health test to learn about risk of developing a brain disease, in a cross-sectional multilanguage online survey. The survey was part of the Global Brain Health Survey, open to the public from 4th June 2019 to 31st August 2020. Respondents were largely recruited via European brain councils and research organizations. 27,590 people responded aged 18 years or older and were predominantly women (71%), middle-aged or older (>40 years; 83%), and highly educated (69%). Responses were analyzed to explore the relationship between demographic variables and responses. Results: We found high public interest in brain health testing: over 91% would definitely or probably take a brain health test and 86% would do so even if it gave information about a disease that cannot be treated or prevented. The main reason for taking a test was the ability to respond if one was found to be at risk of brain disease, such as changing lifestyle, seeking counseling or starting treatment. Higher interest in brain health testing was found in men, respondents with lower education levels and those with poor self-reported cognitive health. Conclusion: High public interest in brain health and brain health testing in certain segments of society, coupled with an increase of commercial tests entering the market, is likely to put pressure on public health systems to inform the public about brain health testing in years to come.

Quality of life and depression in carers of patients with early onset dementia.

OBJECTIVE: To investigate the quality of life (QoL) and depression and its correlates in carers living with early onset dementia (EOD) patients. METHOD: The subjects were 49 carers, either married to or cohabiting with EOD patients, 38 with Alzheimer's disease and 11 with other types of dementia. The Quality of Life - Alzheimer Disease scale (QoL-AD) and Geriatric Depression Scale-15 items (GDS-15) were used. RESULTS: The mean QoL score for the carers was 37.9 (SD 5.5) and the mean GDS-15 score 5.1 (SD 2.9). Linear regression analyses with QoL and GDS-15 score as dependent variables were performed. Increased age of the carer (B = 0.32) and greater insight of the patients (B = -0.186) were significantly associated with a better QoL for the carer. Being married (B = 2.10), having children together with the patient (B = 1.61) and being the carer of a patient with cardiovascular disease (B = 2.28) were associated significantly with a higher GDS-15 score, whereas being the carer of a patient who received domiciliary nursing care (B = -2.29) was significantly associated with a lower GDS-15 score. CONCLUSION: The QoL for carers of EOD patients corresponds positively with the increased age of carers and with patients' insight into their condition. Increased depressive symptomatology in carers was associated with being married, having offspring and caring for a patient with dementia and a co-morbid cardiovascular disease. A reduction in depression was seen in carers when the patients received domiciliary nursing care.

[Early onset dementia]. / Når demens rammer unge.

BACKGROUND: It is estimated that 1,200 people under the age of 65 have been diagnosed with dementia in Norway. This article provides an overview of the types of dementia frequently seen in younger patients. MATERIAL AND METHODS: The article is based on a non-systematic search in PubMed, as well as the authors' own clinical and research experience. RESULTS: Alzheimer's disease, frontotemporal dementia, vascular dementia and dementia with Lewy bodies, are the most common types of dementia occurring more often in younger than in older patients. The cognitive symptoms are more variable in younger patients than in older. Only a small percentage of early onset dementia is caused by genetic factors. There are few diagnostic tools available for this age group and it takes considerable time to reach a correct diagnosis. Early diagnosis allows the patient and carer to plan for the future. INTERPRETATION: Physicians should be aware that dementia can occur in younger people, and more diagnostic assessments should be developed for this patient group. Better coordination from the public health authority and municipalities is needed to provide respite care for early onset dementia patients and their carers.

Occurrence of depression and its correlates in early onset dementia patients.

OBJECTIVE: We wanted to investigate the occurrence of depression in early onset dementia (EOD) patients and which characteristics were associated with depressive symptoms. METHODS: We included 221 patients who were diagnosed with dementia before the age of 65. Depression in these patients was measured by the Montgomery Asberg depression scale (MADRS). Measurements of cognition, behavioural and psychological symptoms and activities of daily life were along with hypothyroidism, diabetes and stroke included in the analysis. History of depression, current psychiatric co-morbidity and usage of antidepressants were recorded. RESULTS: Mean age of patients was 58.6 years (SD = 5.2); 50.6% were women. Of them 123 patients (55.6%) had a mild degree of depression (MADRS total score 7-19), 21 patients (9.5%) had a moderate degree of depression (MADRS total score 20-34) and only 1 patient had a severe degree of depression (MADRS total score >or=35). A factor analysis produced two factors; the first factor described dysphoria: lack of concentration, pessimistic thoughts, inner tension, suicidal thoughts lassitude and lack of sleep. The second factor denoted sadness: observed sadness, reported sadness, lack of appetite and inability to feel. In an adjusted linear regression analysis history of depression was the only significantly variable associated with the MADRS total score and both factors 1 and 2. CONCLUSION: We found a high occurrence of depressive symptoms in EOD patients; 65.7% of all our patients had some degree of depression. A history of depression was the most important correlate of depression in these patients.

Stress affects carers before patient's first visit to a memory clinic.

OBJECTIVE: To measure and compare the burden on spousal carers of patients with and without dementia who were consulting a memory clinic for the first time. METHODS: We included 413 dyads of patients and their spousal carers consulting a memory clinic for the first time. Of them 276 had a diagnosis of Cognitive Impairment No Dementia (CIND) and 137 had a dementia diagnosis. The burden of care was measured with the Relative Stress Scale (RSS). The gender of patients and their spouses was recorded and measures of cognition, depression and functional capacity of the patients were included in the analysis. RESULTS: Of all carers, 27.6% had a score on the RSS of above 23, indicating a moderate to severe burden. The corresponding score for carers of patients with CIND was 20.3%, compared to 42.2% for those with dementia. However, in a linear regression analysis with RSS as the dependent variable, the dementia diagnosis variable was not significant. Three variables were significant (p < 0.05) and has explained 34% of the variance of the score on the RSS, impaired function in activities of daily living (ADL) was the most important variable (beta 0.56), followed by female gender of carers (beta 0.19) and the extent of the symptoms of depression observed in the patients (beta 0.10). CONCLUSION: Carers of both CIND and dementia patients when attending a memory clinic for initial diagnostic assessment experience high levels of stress. Impaired function in ADL in patients is the strongest predictor of this stress.