Caregiver burden related to feeding process in Alzheimer's disease / Sobrecarga do cuidador relacionada ao processo de alimentação na doença de Alzheimer

ABSTRACT Difficulties in the feeding process, such as aversive feeding behaviors and dysphagia, are common in patients with Alzheimer's disease (AD) and can often overload their caregivers. Although dysphagia is already established as a factor contributing to caregiver burden, the impact of aversive behaviors is less studied. Objectives: Evaluate the relationship between the feeding process in individuals with AD and their caregiver's burden. Methods: Dyads of individuals with AD and their caregivers were recruited for a cross-sectional study. The Edinburgh Feeding Evaluation in Dementia (EdFED) scale, the Zarit Burden Interview (ZBI), the mini-mental state examination (MMSE), the Functional Activities Questionnaire (FAQ), and the Functional Oral Intake scale (FOIS) were performed. Results: We included 60 AD individuals-caregivers dyads. The median (IQR) age of caregivers was 57 (19-81) years, and the most were females (70%). The individuals with AD had a median MMSE of 12 (6-15), and the disease duration was 4 (2-6) years. The mean (SD) Zarit score was 20.95 (6.51). In the multivariate linear regression, the EdFED score (95% CI 0.368-1.465) and time as a caregiver (95% CI 0.133-1.355) were associated with the caregiver's burden. Conclusions: Aversive behaviors were associated with the caregiver burden of individuals with AD, even with a short duration of the disease. These findings show the importance of education for caregivers regarding the feeding process, as these measures have great potential to minimize the caregiver's burden.

RESUMO Dificuldades no processo de alimentação, como comportamentos alimentares aversivos e disfagia, são comuns em indivíduos com doença de Alzheimer (DA) e muitas vezes podem sobrecarregar seus cuidadores. Embora a disfagia já esteja estabelecida como um fator que contribui para a sobrecarga do cuidador, o impacto dos comportamentos aversivos é menos estudado. Objetivos: Avaliar a relação entre o processo de alimentação em indivíduos com DA e a sobrecarga de seus cuidadores. Métodos: Díades de indivíduos com DA e seus cuidadores foram recrutados para um estudo transversal. Os protocolos Edinburgh Feeding Evaluation in Dementia Scale (EdFED), Zarit Burden Interview (ZBI), Mini-Mental State Examination (MMSE), Functional Activities Questionnaire (FAQ) e Functional Oral Intake Scale (FOIS) foram realizados. Resultados: Incluímos 60 díades de cuidadores-indivíduos com DA. A idade mediana (intervalo interquartil — IQR) dos cuidadores foi de 57 (19-81) anos e a maioria era do sexo feminino (70%). A mediana do MMSE dos indivíduos com DA foi de 12 (6-15) e o tempo de doença foi de quatro (2-6) anos. A pontuação média do Zarit foi de 20,95 (6,51). Na regressão logística multivariada, o escore EdFED (intervalo de confiança de 95% — IC95% 0,368-1,465) e o tempo como cuidador (IC95% 0,133-1,355) foram associados à sobrecarga deste. Conclusões: Comportamentos aversivos foram associados à sobrecarga do cuidador de indivíduos com DA, mesmo com pouco tempo de doença. Esses achados mostram a importância da educação dos cuidadores quanto ao processo de alimentação, pois essas medidas têm grande potencial para minimizar sua sobrecarga.

Minimal prevalence of Huntington's disease in the South of Brazil and instability of the expanded CAG tract during intergenerational transmissions.

Huntington's disease (HD) is due to dominant expansions of the CAG repeat of the HTT gene. Meiotic instability of the (CAG)n might impact the disorder frequency. We report on HD minimal prevalence in Rio Grande do Sul (RS) state, Brazil, and on intergenerational instability of the (CAG)n in HD families. Symptomatic and at-risk subjects from 179 HD families were ascertained between 2013 and 2016. Clinical, molecular and family history data were obtained. Expanded (CAG)n length differences between parent and child (delta-expanded-(CAG)n) were calculated. Effect of parental age on the (CAG)n instability upon transmission was inferred by correlating delta-expanded-(CAG)n between siblings to their age differences. HD minimal prevalence in RS state was estimated as 1.85:100,000 inhabitants. Alleles with (CAG)27-35 were found on 21/384 non-disease associated chromosomes (5.5%); among 253 expanded alleles, four (1.6%) were within reduced penetrance range with (CAG)36-39. In 32 direct transmissions, mean instability was larger among paternal than maternal transmissions. In direct transmissions and in 51 sibling pairs, parental age at the time of child birth were not correlated with delta-expanded-(CAG)n. Briefly, HD prevalence in RS state was lower than those reported for European populations. Expanded (CAG)n transmissions were unstable and not associated to parental age.