28 research outputs found

    Genetic and lifestyle risk factors for MRI-defined brain infarcts in a population-based setting.

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    OBJECTIVE: To explore genetic and lifestyle risk factors of MRI-defined brain infarcts (BI) in large population-based cohorts. METHODS: We performed meta-analyses of genome-wide association studies (GWAS) and examined associations of vascular risk factors and their genetic risk scores (GRS) with MRI-defined BI and a subset of BI, namely, small subcortical BI (SSBI), in 18 population-based cohorts (n = 20,949) from 5 ethnicities (3,726 with BI, 2,021 with SSBI). Top loci were followed up in 7 population-based cohorts (n = 6,862; 1,483 with BI, 630 with SBBI), and we tested associations with related phenotypes including ischemic stroke and pathologically defined BI. RESULTS: The mean prevalence was 17.7% for BI and 10.5% for SSBI, steeply rising after age 65. Two loci showed genome-wide significant association with BI: FBN2, p = 1.77 × 10-8; and LINC00539/ZDHHC20, p = 5.82 × 10-9. Both have been associated with blood pressure (BP)-related phenotypes, but did not replicate in the smaller follow-up sample or show associations with related phenotypes. Age- and sex-adjusted associations with BI and SSBI were observed for BP traits (p value for BI, p [BI] = 9.38 × 10-25; p [SSBI] = 5.23 × 10-14 for hypertension), smoking (p [BI] = 4.4 × 10-10; p [SSBI] = 1.2 × 10-4), diabetes (p [BI] = 1.7 × 10-8; p [SSBI] = 2.8 × 10-3), previous cardiovascular disease (p [BI] = 1.0 × 10-18; p [SSBI] = 2.3 × 10-7), stroke (p [BI] = 3.9 × 10-69; p [SSBI] = 3.2 × 10-24), and MRI-defined white matter hyperintensity burden (p [BI] = 1.43 × 10-157; p [SSBI] = 3.16 × 10-106), but not with body mass index or cholesterol. GRS of BP traits were associated with BI and SSBI (p ≤ 0.0022), without indication of directional pleiotropy. CONCLUSION: In this multiethnic GWAS meta-analysis, including over 20,000 population-based participants, we identified genetic risk loci for BI requiring validation once additional large datasets become available. High BP, including genetically determined, was the most significant modifiable, causal risk factor for BI

    Mental Health and Religiosity Among Sexual and Gender Minority Students at a Religious University

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    University students are reporting increasing levels of psychological distress and suicidality. Consistent with the Minority Stress Model, Sexual and Gender Minorities (SGMs) are especially vulnerable; this is often heightened at religious universities that are non-affirming of SGM identities . We studied mental health and religiosity among 219 undergraduates at a religiously diverse, yet non-affirming university. SGMs (n = 68) reported higher rates of suicidality (U = 3267.5, p \u3c .001, rho = .28) and psychological distress (t = 4.16, df = 221, p \u3c .001, d = 0.60) than nonSGMs. This suggests that SGMs are at a higher risk of negative mental health outcomes. Intrinsic religiosity acted as a protective factor for suicidality for SGM and nonSGM students. Religious attendance correlated with higher rates of internalized homonegativity (rho = .35, p = .006) and identity superiority (rho = -.36, p = .005) for SGMs. These findings highlight the complicated relationship between SGM identity and religiosity. This study underscores the importance of offering affirming religious spaces for SGM individuals and providing increased psychological support for SGM students at religious universities

    Sunscreens: An Update

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    Sunscreens have been widely used by the general public for their photoprotective properties, including prevention of photocarcinogenesis and photoaging and management of photodermatoses. It is important to emphasize to consumers the necessity of broad-spectrum protection, with coverage of both ultraviolet A (320-400 nm) and ultraviolet B (290-320 nm) radiation. This review discusses the benefits of sunscreen, different ultraviolet filters, sunscreen regulations and controversies, the importance of broad-spectrum protection, issues of photostability and formulation, and patient education and compliance
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