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Träfflista för sökning "WFRF:(Langhorne Peter) ;pers:(Pantoni Leonardo)"

Sökning: WFRF:(Langhorne Peter) > Pantoni Leonardo

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  • Poggesi, Anna, et al. (författare)
  • Urinary complaints in nondisabled elderly people with age-related white matter changes: the Leukoaraiosis And DISability (LADIS) Study.
  • 2008
  • Ingår i: Journal of the American Geriatrics Society. - : Wiley. - 1532-5415 .- 0002-8614. ; 56:9, s. 1638-43
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES: To investigate, in a cohort of nondisabled elderly people, the association between urinary complaints and severity of age-related white matter changes (ARWMC). DESIGN: Cross-sectional data analysis from a longitudinal multinational study. SETTING: The Leukoaraiosis And DISability Study, assessing ARWMC as an independent predictor of the transition from functional autonomy to disability in elderly subjects. PARTICIPANTS: Six hundred thirty-nine subjects (288 men, 351 women, mean age 74.1+/-5.0) with magnetic resonance imaging (MRI)-detected ARWMC of different severity. MEASUREMENTS: ARWMC severity was graded on MRI as mild, moderate, and severe (Fazekas scale). MRI assessment also included ARWMC volumetric analysis and the count of infarcts. Urinary complaints (nocturia, urinary frequency, urgency, incontinence) were recorded based on subjects' answers to four questions. RESULTS: In comparing the three ARWMC severity groups, there was a significant difference only in prevalence of urgency, with 16% of subjects in the mild severity group, 17% in the moderate severity group, and 25% in the severe group (P=.03). Adjusting for age, sex, lacunar and nonlacunar infarcts, diabetes mellitus, and use of diuretics, severe ARWMC retained an independent effect in the association with urinary urgency (odds ratio=1.74, 95% confidence interval=1.04-2.90, severe vs mild group). Subjects with urinary urgency also had higher ARWMC volumes (25.2, vs 20.4 mm(3) in those without urinary urgency; P<.001). Urgency was confirmed to be associated with the severe degree of ARWMC, irrespective of complaints of memory, gait disturbances, or history of depression. CONCLUSION: In a cohort of nondisabled elderly people, severe ARWMC were associated with urinary urgency, independent of other potential confounders and vascular lesions of the brain.
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  • Ropele, Stefan, et al. (författare)
  • Quantitation of brain tissue changes associated with white matter hyperintensities by diffusion-weighted and magnetization transfer imaging: the LADIS (Leukoaraiosis and Disability in the Elderly) study.
  • 2009
  • Ingår i: Journal of magnetic resonance imaging : JMRI. - : Wiley. - 1053-1807 .- 1522-2586. ; 29:2, s. 268-74
  • Tidskriftsartikel (refereegranskat)abstract
    • PURPOSE: To explore the value of diffusion-weighted imaging (DWI) and magnetization transfer imaging (MTI) for the improved detection and quantification of cerebral tissue changes associated with ageing and white matter hyperintensities (WMH). MATERIALS AND METHODS: DWI (n = 340) and MTI (n = 177) were performed in nine centers of the multinational Leukoaraiosis And DISability (LADIS) study investigating the impact of WMH on 65- to 85-year-old individuals without prior disability. We assessed the apparent diffusion coefficient (ADC) and magnetization transfer ratio (MTR) of normal appearing brain tissue (NABT) and within WMH and related them to subjects' age and WHM severity according to the Fazekas score. RESULTS: ADC and MTR values showed a significant inter-site variation, which was stronger for the MTR. After z-transformation multiple regression analysis revealed WMH severity and age as significant predictors of global ADC and MTR changes. Only lesional ADC, but not MTR was related to WMH severity. CONCLUSION: ADC and MTR are both sensitive for age and WMH related changes in NABT. The ADC is more sensitive for tissue changes within WMH and appears to be more robust for multicenter settings.
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