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Blood pressure and cognitive function: a prospective analysis among adolescents in Seychelles.

ABSTRACT: An inverse relationship between blood pressure (BP) and cognitive function has been found in adults, but limited data are available in adolescents and young adults. We examined the prospective relation between BP and cognitive function in adolescence.We examined the association between BP measured at the ages of 12-15 years in school surveys and cognitive endpoints measured in the Seychelles Child Development Study at ages 17 (n?=?407) and 19 (n?=?429) years, respectively. We evaluated multiple domains of cognition based on subtests of the Cambridge Neurological Test Automated Battery (CANTAB), the Woodcock Johnson Test of Scholastic Achievement (WJTA), the Finger Tapping test (FT) and the Kaufman Brief Intelligence Test (K-BIT). We used age, sex and height-specific z-scores of SBP, DBP and mean arterial pressure (MAP).Six out of the 21 cognitive endpoints tested were associated with BP. However, none of these associations were found to hold for both males and females or for different subtests within the same neurodevelopmental domain or for both SBP and DBP. Most of these associations disappeared when analyses were adjusted for selected potential confounding factors such as socio-economic status, birth weight, gestational age, BMI, alcohol consumption, blood glucose, and total n-3 and n-6 polyunsaturated fats.Our findings do not support a consistent association between BP and subsequent performance on tests assessing various cognitive domains in adolescents.

SUBMITTER: Lyngdoh T

PROVIDER: S-EPMC3874141 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature

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Blood pressure and cognitive function: a prospective analysis among adolescents in Seychelles.

Lyngdoh Tanica T Viswanathan Bharathi B Kobrosly Roni R van Wijngaarden Edwin E Huber Brittany B Davidson Philip W PW Cory-Slechta Deborah A DA Strain John J JJ Myers Gary J GJ Bovet Pascal P

Journal of hypertension 20130601 6

<h4>Objective</h4>An inverse relationship between blood pressure (BP) and cognitive function has been found in adults, but limited data are available in adolescents and young adults. We examined the prospective relation between BP and cognitive function in adolescence.<h4>Methods</h4>We examined the association between BP measured at the ages of 12-15 years in school surveys and cognitive endpoints measured in the Seychelles Child Development Study at ages 17 (n = 407) and 19 (n = 429) years, re ...[more]

PMID: 23572201

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Project description:BackgroundCognitive function is a concern among the elderly, which is related to the quality of life, life expectancy, and economic burdens. The relationship between blood pressure (BP) control status, visit-to-visit BP variability, and cognitive function remains controversial.MethodsWe aimed to explore the association between BP control status at baseline, visit-to-visit BP variability, and cognitive function. This study included 3,511 elderlies in the China Health and Retirement Longitudinal Study, covering four waves for 7-year follow-up (baseline 2011, 2013, 2015, and 2018). BP was measured in Wave 2011, 2013, and 2015. Cognitive function was measured by Mini-Mental State Exam in Wave 2018. Participants were divided into two groups: mid-old group for reflecting midlife BP and cognition (45-59 years at baseline but aged 60 or over in Wave 2018), and old-old group for reflecting late-life BP and cognition (aged 60 or over at baseline). We use univariate analysis and general linear model to analyze.ResultsLate-life BP showed stronger associations with cognitive function than midlife BP. As to late-life BP control status, controlled hypertension group get higher cognitive score than uncontrolled hypertension group in language (adjusted β = -0.34, 95%CI -0.68 to 0.00), and untreated hypertension group in orientation (adjusted β = -0.41, 95%CI -0.72 to -0.11), language (adjusted β = -0.35, 95%CI -0.67 to -0.04), and total (adjusted β = -0.99, 95%CI -1.85 to -0.12). Regarding visit-to-visit BP variability, midlife visit-to-visit systolic blood pressure (SBP) variability was associated with language (adjusted β = -3.70, 95% CI -5.83 to -1.57), while late-life visit-to-visit SBP variability was associated with orientation (adjusted β = -2.99, 95% CI -4.84 to -1.14), recall (adjusted β = -1.69, 95% CI -2.89 to -0.48), language (adjusted β = -2.26, 95% CI -4.13 to -0.38), and total (adjusted β = -9.50, 95% CI -14.71 to -4.28); Midlife diastolic blood pressure (DBP) variability and pulse pressure (PP) variability showed a significant relationship with language (adjusted β = 3.25, 95% CI -1.31 to -5.19) and calculation (adjusted β = -0.26, 95% CI -0.47 to -0.04), respectively. No significant correlation was found between midlife BP control status, late-life visit-to-visit DBP variability, late-life visit-to-visit PP variability, and cognitive score. There was no significant correlation between BP and memory.ConclusionsBP control status and visit-to-visit BP variability were significantly related to cognitive function among the Chinese elderly. Receiving effective late-life antihypertensive treatment and keeping SBP stable might contribute to prevent the development of cognitive impairment and dementia, especially for orientation and language function.

Dataset Information

Blood pressure and cognitive function: a prospective analysis among adolescents in Seychelles.

Publications

Blood pressure and cognitive function: a prospective analysis among adolescents in Seychelles.

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