02677nas a2200241 4500008004100000022001400041245013900055210006900194260001600263520189900279100002102178700002002199700002302219700001802242700002002260700002102280700001802301700001902319700002102338700002002359700002002379856003602399 2021 eng d a1433-928500aAssociations between neighborhood greenspace and brain imaging measures in non-demented older adults: the Cardiovascular Health Study.0 aAssociations between neighborhood greenspace and brain imaging m c2021 Jan 033 a

PURPOSE: Greater neighborhood greenspace has been associated with brain health, including better cognition and lower odds of Alzheimer's disease in older adults. We investigated associations between neighborhood greenspace and brain-based magnetic resonance imaging (MRI) measures and potential effect modification by sex or apolipoprotein E genotype (APOE), a risk factor for Alzheimer's disease.

METHODS: We obtained a sample of non-demented participants 65 years or older (n = 1125) from the longitudinal, population-based Cardiovascular Health Study (CHS). Greenspace data were derived from the National Land Cover Dataset. Adjusted multivariable linear regression estimated associations between neighborhood greenspace five years prior to the MRI and left and right hippocampal volume and 10-point grades of ventricular size and burden of white matter hyperintensity. Interaction terms tested effect modification by APOE genotype and sex. CHS data (1989-1999) were obtained/analyzed in 2020.

RESULTS: Participants were on average 79 years old [standard deviation (SD) = 4], 58% were female, and 11% were non-white race. Mean neighborhood greenspace was 38% (SD = 28%). Greater proportion of greenspace in the neighborhood five years before MRI was borderline associated with lower ventricle grade (estimate: - 0.30; 95% confidence interval: - 0.61, 0.00). We observed no associations between greenspace and the other MRI outcome measures and no evidence of effect modification by APOE genotype and sex.

CONCLUSION: This study suggests a possible association between greater greenspace and less ventricular enlargement, a measure reflecting global brain atrophy. If confirmed in other longitudinal cohort studies, interventions and policies to improve community greenspaces may help to maintain brain health in older age.

1 aBesser, Lilah, M1 aLovasi, Gina, S1 aMichael, Yvonne, L1 aGarg, Parveen1 aHirsch, Jana, A1 aSiscovick, David1 aHurvitz, Phil1 aBiggs, Mary, L1 aGalvin, James, E1 aBartz, Traci, M1 aLongstreth, W T uhttps://chs-nhlbi.org/node/861602569nas a2200301 4500008004100000022001400041245012700055210006900182260001700251300001100268490000700279520165000286100002101936700002001957700002901977700002002006700002002026700002302046700001802069700002002087700002102107700002302128700001902151700002102170700002002191700002002211856003602231 2023 eng d a2352-872900aNeighborhood greenspace and neighborhood income associated with white matter grade worsening: Cardiovascular Health Study.0 aNeighborhood greenspace and neighborhood income associated with  c2023 Oct-Dec ae124840 v153 a

INTRODUCTION: We examined whether a combined measure of neighborhood greenspace and neighborhood median income was associated with white matter hyperintensity (WMH) and ventricle size changes.

METHODS: The sample included 1260 cognitively normal ≥ 65-year-olds with two magnetic resonance images (MRI; ≈ 5 years apart). WMH and ventricular size were graded from 0 (least) to 9 (most) abnormal (worsening = increase of ≥1 grade from initial to follow-up MRI scans). The four-category neighborhood greenspace-income measure was based on median neighborhood greenspace and income values at initial MRI. Multivariable logistic regression tested associations between neighborhood greenspace-income and MRI measures (worsening vs. not).

RESULTS: White matter grade worsening was more likely for those in lower greenspace-lower income neighborhoods than higher greenspace-higher income neighborhoods (odds ratio = 1.73; 95% confidence interval = 1.19-2.51).

DISCUSSION: The combination of lower neighborhood income and lower greenspace may be a risk factor for worsening white matter grade on MRI. However, findings need to be replicated in more diverse cohorts.

HIGHLIGHTS: Population-based cohort of older adults (≥ 65 years) with greenspace and MRI dataCombined measure of neighborhood greenspace and neighborhood income at initial MRIMRI outcomes included white matter hyperintensities (WMH) and ventricular sizeLongitudinal change in MRI outcomes measured approximately 5 years apartWorsening WMH over time more likely for lower greenspace-lower income neighborhoods.

1 aBesser, Lilah, M1 aLovasi, Gina, S1 aZambrano, Joyce, Jimenez1 aCamacho, Simone1 aDhanekula, Devi1 aMichael, Yvonne, L1 aGarg, Parveen1 aHirsch, Jana, A1 aSiscovick, David1 aHurvitz, Philip, M1 aBiggs, Mary, L1 aGalvin, James, E1 aBartz, Traci, M1 aLongstreth, W T uhttps://chs-nhlbi.org/node/9532