Mild Cognitive Impairment in the Presence of Depressive Symptoms Related to Impaired Cerebrovascular Function in the Obese Zucker Rat

ABSTRACTObjective:There is increasing evidence of an association between depressive symptoms and mild cognitive impairment (MCI) in cross-sectional studies, but the longitudinal association between depressive symptoms and risk of MCI onset is less clear. The authors investigated whether baseline symptom severity of depression was predictive of time to onset of symptoms of MCI.Method:These analyses included 300 participants from the BIOCARD study, a cohort of individuals who were cognitively normal at baseline (mean age = 57.4 years) and followed for up to 20 years (mean follow-up = 2.5 years). Depression symptom severity was measured using the Hamilton Depression Scale (HAM-D). The authors assessed the association between dichotomous and continuous HAM-D and time to onset of MCI within 7 years versus after 7 years from baseline (reflecting the mean time from baseline to onset of clinical symptoms in the cohort) using Cox regression models adjusted for gender, age, and education.Results:At baseline, subjects had a mean HAM-D score of 2.2 (SD = 2.8). Higher baseline HAM-D scores were associated with an increased risk of progression from normal cognition to clinical symptom onset ≤ 7 years from baseline (p= 0.043), but not with progression > 7 years from baseline (p= 0.194). These findings remained significant after adjustment for baseline cognition.Conclusions:These results suggest that low levels of depressive symptoms may be predictive of clinical symptom onset within approximately 7 years among cognitively normal individuals and may be useful in identifying persons at risk for MCI due to Alzheimer’s disease.

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The effect of group exercises on balance, mobility, and depressive symptoms in older adults with mild cognitive impairment: a randomized controlled trial

Clinical Rehabilitation ◽

10.1177/0269215518815218 ◽

2018 ◽

Vol 33 (3) ◽

pp. 439-449 ◽

Cited By ~ 4

Author(s):

Chandra da Silveira Langoni ◽

Thais de Lima Resende ◽

Andressa Bombardi Barcellos ◽

Betina Cecchele ◽

Juliana Nunes da Rosa ◽

...

Keyword(s):

Older Adults ◽

Cognitive Impairment ◽

Depressive Symptoms ◽

Mild Cognitive Impairment ◽

Intervention Group ◽

Depression Scale ◽

Community Dwelling ◽

Effect Sizes ◽

Control Group ◽

Community Dwelling Older Adults

Objective: To determine the effects of group exercises on balance, mobility, and depressive symptoms in community-dwelling older adults with mild cognitive impairment. Design: Single blinded, randomized, matched pairs clinical trial. Setting: Four primary healthcare units. Subjects: Fifty-two sedentary subjects with mild cognitive impairment were paired (age, sex, body mass index, and Addenbrooke’s Cognitive Examination Revised score), tested, and then randomized into an intervention group ( n = 26) and a control group ( n = 26). Intervention: The intervention group performed strength (ankle weights, elastic bands, and dumbbells) and aerobic exercises (walking) in their communities’ public spaces, twice a week (60 minutes each), during 24 weeks. The control group maintained its usual routine. Main measures: Balance (Berg Balance Scale (BBS)), mobility (Timed Up and Go Test (TUG)), and depressive symptoms (Geriatric Depression Scale-15) were assessed before and after the intervention. Results: Before the intervention, the two groups did not differ statistically. After, the intervention group showed significant improvement ( P < 0.05) in balance (before: 53 ± 3; after: 55.1 ± 1.1 points), mobility (before: 10.7 ± 2.9 seconds; after: 8.3 ± 2 seconds), and depressive symptoms (median punctuation (interquartile range) before: 4 (1.8–6); after: 2.5 (1–4)). The control group presented a significant increase in their depressive symptoms (median before: 3.5 (2–7.3); after: 4 (2–5.3)), while their balance and mobility showed no significant modification. Small effect sizes were observed in the intervention group and control group depressive symptoms, as well as in the control group’s mobility and balance. Large effect sizes were observed the intervention group’s mobility and balance. Conclusion: Group exercises improved balance, mobility, and depressive symptoms in community-dwelling older adults with mild cognitive impairment.

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Identifying the Factors Related to Depressive Symptoms Amongst Community-Dwelling Older Adults with Mild Cognitive Impairment

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16183449 ◽

2019 ◽

Vol 16 (18) ◽

pp. 3449 ◽

Cited By ~ 1

Author(s):

Dan Song ◽

Doris S.F. Yu ◽

Polly W.C. Li ◽

Qiuhua Sun

Keyword(s):

Older Adults ◽

Cognitive Impairment ◽

Depressive Symptoms ◽

Mild Cognitive Impairment ◽

Geriatric Depression Scale ◽

Depression Scale ◽

Community Dwelling ◽

Cross Sectional ◽

Increased Risk ◽

Community Dwelling Older Adults

High-level depressive symptoms have been reported in individuals with mild cognitive impairment (MCI), resulting in increased risk of progression to dementia. However, studies investigating the correlates of depressive symptoms among this population are scarce. This study aimed to investigate the significant socio-demographic, lifestyle-related and disease-related correlates of depressive symptoms among this cohort. Cross-sectional data were obtained from a sample of 154 Chinese community-dwelling older adults with MCI. MCI subjects were screened by the Montreal Cognitive Assessment. Depressive symptoms were measured by the Geriatric Depression Scale. Possible correlates of depressive symptoms in individuals with MCI were explored by multiple linear regressions. The prevalence of depressive symptoms among Chinese older adults with MCI was 31.8%. In multiple regression analysis, poor perceived positive social interaction, small social network, low level of physical activity, poor functional status, subjective memory complaint, and poor health perception were correlated with depressive symptoms. The findings highlight that depressive symptoms are sufficient to warrant evaluation and management in older adults with MCI. Addressing social isolation, assisting this vulnerable group in functional and physical activities, and cultivating a positive perception towards cognitive and physical health are highly prioritized treatment targets among individuals with MCI.

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