scholarly journals Reasons Underlying Racial Differences in Stroke Incidence and Mortality

Stroke ◽  
2013 ◽  
Vol 44 (6, Supplement 1) ◽  
pp. S126-S128 ◽  
Author(s):  
V. J. Howard
Keyword(s):  
Racial Differences ◽  
Stroke Incidence ◽  
Incidence And Mortality

scholarly journals Identifying Genetic and Biological Determinants of Race-Ethnic Disparities in Stroke in the United States

Stroke ◽  
2020 ◽  
Vol 51 (11) ◽  
pp. 3417-3424 ◽  
Author(s):  
Debora Kamin Mukaz ◽  
Neil A. Zakai ◽  
Salvador Cruz-Flores ◽  
Louise D. McCullough ◽  
Mary Cushman
Keyword(s):  
United States ◽  
Risk Factors ◽  
Racial Disparities ◽  
Racial Differences ◽  
Ethnic Disparities ◽  
The United States ◽  
Current Evidence ◽  
Stroke Incidence ◽  
Incidence And Mortality ◽  
Traditional Risk Factors

In the United States, causes of racial differences in stroke and its risk factors remain only partly understood, and there is a long-standing disparity in stroke incidence and mortality impacting Black Americans. Only half of the excess risk of stroke in the United States Black population is explained by traditional risk factors, suggesting potential effects of other factors including genetic and biological characteristics. Here, we nonsystematically reviewed candidate laboratory biomarkers for stroke and their relationships to racial disparities in stroke. Current evidence indicates that IL-6 (interleukin-6), a proinflammatory cytokine, mediates racial disparities in stroke through its association with traditional risk factors. Only one reviewed biomarker, Lp(a) (lipoprotein[a]), is a race-specific risk factor for stroke. Lp(a) is highly genetically determined and levels are substantially higher in Black than White people; clinical and pharmaceutical ramifications for stroke prevention remain uncertain. Other studied stroke risk biomarkers did not explain racial differences in stroke. More research on Lp(a) and other biological and genetic risk factors is needed to understand and mitigate racial disparities in stroke.

scholarly journals REGARDS: A Case Study in Aging and Disparities Research, Mentoring, and Data Sharing

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 855-856
Author(s):  
Virginia Howard ◽  
Jennifer Manly ◽  
Maria Glymour
Keyword(s):  
Risk Factors ◽  
Data Sharing ◽  
Racial Differences ◽  
Stroke Risk ◽  
Epidemiologic Studies ◽  
Stroke Incidence ◽  
Stroke Risk Factors ◽  
Incidence And Mortality ◽  
National Cohort ◽  
Ancillary Studies

Abstract Investigators in the NIH-funded REGARDS (REasons for Geographic and Racial Differences in Stroke) project have taken a novel approach to break the paradigm of epidemiologic studies limited to clinic-based convenience samples, by developing a national cohort of 30,239 black and white participants recruited from communities across all lower 48 US states, including 1,855 of the 3,033 counties. Mean age at enrollment (Jan 2003-Oct 2007) was 65.3 years. The four initial aims were to further understanding of: 1) geographic and racial differences in stroke risk factors; 2) geographic and racial differences in stroke incidence and mortality; 3) association of stroke risk factors and stroke risk (incidence and mortality) focusing on effect modification by race or region; and 4) establishment of a repository of serum, plasma, urine and DNA for use in future studies. When the grant was awarded, the study goals were broadened to include longitudinal remote assessment of cognitive function. A second in-home visit was completed May 2013-Dec 2016 including measures of functional status. The cohort is in its 17th year of follow-up. We will detail recruitment and enrollment methods, characteristics of the cohort and status, with brief overview of the biological, medical, psychosocial, environmental, and contextual data collected in the parent study. Speakers will discuss in more detail the stroke and cognitive data, ancillary studies focused on caregiver and heart disease outcomes, and provide examples of national and international mentoring that has leveraged REGARDS data. Finally, we will describe opportunities for additional data sharing and new ancillary studies.

scholarly journals EXPRESS: COVID-19 AND STROKE – UNDERSTANDING THE RELATIONSHIP AND ADAPTING SERVICES. A GLOBAL WORLD STROKE ORGANISATION PERSPECTIVE

2021 ◽  
pp. 174749302110064
Author(s):  
Hugh S Markus ◽  
Sheila Cristina Ouriques Martins
Keyword(s):  
Large Scale ◽  
Stroke Care ◽  
Long Term Effects ◽  
Vessel Occlusion ◽  
Stroke Incidence ◽  
Stroke Research ◽  
Incidence And Mortality ◽  
Research Initiatives ◽  
Global World

A year ago the World Stroke Organisation (WSO) highlighted the enormous global impact of the COVID-19 pandemic on stroke care. In this review we consider a year later where we are now, what the future holds, and what the long term effects of the pandemic will be on stroke. Stroke occurs in about 1.4% of patients hospitalised with COVID-19 infection, who show an excess of large vessel occlusion and increased mortality. Despite this association, stroke presentations fell dramatically during the pandemic, although emerging data suggests that total stroke mortality may have risen with increased stroke deaths at home and in care homes. Strategies and guidelines have been developed to adapt stroke services worldwide, and protect healthcare workers. Adaptations include increasing use of telemedicine for all aspects of stroke care. The pandemic is exacerbating already marked global inequalities in stroke incidence and mortality. Lastly the pandemic has had a major impact on stroke research and funding, although it has also emphasised the importnace of large scale collaborative research initiatives.

scholarly journals Stroke Incidence and Mortality Trends in US Communities, 1987 to 2011

JAMA ◽  
2014 ◽  
Vol 312 (3) ◽  
pp. 259 ◽  
Author(s):  
Silvia Koton ◽  
Andrea L. C. Schneider ◽  
Wayne D. Rosamond ◽  
Eyal Shahar ◽  
Yingying Sang ◽  
...  
Keyword(s):  
Mortality Trends ◽  
Stroke Incidence ◽  
Incidence And Mortality

Pan cancer analysis of the intra-tumoral microbiome’s correlation with racial disparities.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 2519-2519
Author(s):  
Wei Tse Li ◽  
Matthew Uzelac ◽  
Jaideep Chakladar ◽  
Lindsay M. Wong ◽  
Aditi Gnanasekar ◽  
...  
Keyword(s):  
Bladder Cancer ◽  
African Americans ◽  
Racial Disparities ◽  
Racial Differences ◽  
Asian Americans ◽  
Environmental Influence ◽  
Microbial Abundance ◽  
Risk Of Death ◽  
Incidence And Mortality ◽  
Starting Point

2519 Background: Microbiome composition can influence cancer development and is moderated by diet, hygiene, sanitation, and other environmental variables. For example, a Mediterranean diet could increase breast Lactobacillus abundance, while the gut microbiome changes dramatically with fructose intake. Recent studies have revealed correlations between microbial abundance and racial disparities in cancer. Given these reports, it is critical to examine whether environmental influences on the microbiome contribute to racial disparities in cancer incidence and prognosis. Methods: We examined the intra-tumoral microbiome in the lungs, breasts, bladder, colon, rectum, cervix, head and neck, prostate, and pancreas (n = 4,169). Raw tumor RNA sequencing data were downloaded from The Cancer Genome Atlas (TCGA) and aligned to bacterial genomes. Microbial abundance was correlated to race, ethnicity, and prognostic variables (Kruskal-Wallis test or Cox regression, p< 0.05). Results: We identified several microbes correlated with racial disparities for breast and bladder cancer, two microbes for lung squamous cell carcinoma, and one microbe for colon cancer. For breast cancer, African Americans have the highest mortality rate, followed by white Americans and Asian Americans. We found that four microbes, all under the order Burkholderiales, were positively correlated with poor prognosis and were most abundant in African Americans and least abundant in Asian Americans. Therefore, increased abundance of these microbes may contribute to the observed mortality differences between races. For bladder cancer, Asian Americans have the lowest incidence and mortality rates. Seven microbes, including two Geobacillus, two Pseudomonas, and two Burkholderiales, positively correlate with good prognosis and are upregulated in Asian Americans. High Pseudomonas fluorescens abundance is positively correlated with decreased risk of death (HR: 0.57, 95% CI: 0.38-0.85). High abundance of the Burkholderiales R. pickettii (HR: 0.62, 95% CI: 0.42-0.92) and V. paradoxus (HR: 0.59, 95% CI: 0.36-0.98) also exhibit the same trend. Geobacillus and Pseudomonas are both present in food, while Burkholderiales can cause nosocomial infections and are altered by diet. Conclusions: Our study is the most comprehensive to date investigating racial differences in the intra-tumoral microbiome. Our data serve as a starting point for exploring whether environmental influence of microbial abundance contributes to racial disparities in cancer.

scholarly journals FAKTOR-FAKTOR RISIKO STROKE PADA PENYAKIT GINJAL KRONIK STADIUM V YANG MENJALANI HEMODIALISIS

2018 ◽  
Vol 35 (2) ◽  
Author(s):  
Susanti Dwi Ariani ◽  
Dodik Tugasworo ◽  
Maria Imakulata Widiastuti Samekto
Keyword(s):  
Diabetes Mellitus ◽  
Risk Factors ◽  
Chronic Kidney Disease ◽  
Multivariate Analysis ◽  
Ischemic Stroke ◽  
Kidney Disease ◽  
Case Group ◽  
Chi Square ◽  
Stroke Incidence ◽  
Incidence And Mortality

RISK FACTORS OF STROKE IN STAGE V CHRONIC KIDNEY DISEASE WHO UNDERWENT HEMODIALYSISABSTRACTIntroduction: Chronic kidney disease (CKD) and end-stage renal disease are associated with a significantly in- creased risk of stroke. Incidence and mortality of stroke in CKD patients is higher rather than among the general popula- tion. Stroke in hemodialysis patients is also associated with high mortality.Aims: To analyze risk factors that have a relationship with the occurrence of stroke in patients with stage V CKD who underwent hemodialysis in Dr. Kariadi Hospital, Semarang.Method: A case control with retrospective cohort study of patients diagnosed with stage V CKD undergoing hemo- dialysis in Dr. Kariadi Hospital, Semarang, from March 2016 to August 2017. Subject was divided into case group, who experienced stroke, and control group, who did not experience stroke. Bivariate analysis was performed with Chi-square test, multivariate analysis with logistic regression test and rasio Odds.Results: There were 140 subjects with stage V CKD, 70 subjects in each groups. In case group, 85.7% experienced ischemic stroke while the rest hemorrhagic stroke. The duration of hemodialysis was related to the incidence of stroke. In multivariate analysis, patients with diabetes mellitus were more likely to have a stroke by 0.14 times compared to patients who did not have diabetes mellitus, and patients who underwent hemodialysis >12 months, were more likely to have a stroke 4.05 times greater than patients who underwent hemodialysis <12 months.Discussion: There is a relationship between diabetes mellitus and duration of hemodialysis with the occurrence of ischemic stroke, in stage V CKD patients who underwent hemodialysis.Keywords: Chronic kidney disease, hemodialysis, strokeABSTRAKPendahuluan: Penyakit ginjal kronik (PGK) dan penyakit ginjal stadium akhir terkait dengan peningkatan risiko yang signifikan dari stroke. Insiden dan mortalitas stroke pada pasien PGK lebih tinggi dibandingkan populasi umum. Stroke pada pasien dialisis juga dihubungkan dengan mortalitas yang tinggi.Tujuan: Untuk menganalisis faktor-faktor risiko yang memengaruhi terjadinya stroke pada pasien dengan PGK stadium V yang menjalani hemodialisis (HD) di RSUP Dr. Kariadi, Semarang.Metode: Penelitian kasus kontrol dengan pendekatan kohort retrospektif terhadap pasien penyakit ginjal kronik stadium V yang menjalani HD di RSUP Dr. Kariadi, Semarang dari bulan Maret 2016 hingga Agustus 2017. Subjek dibagi ke dalam kelompok kasus, yaitu yang mengalami stroke dan kelompok kontrol yang tidak mengalami stroke. Dilakukan analisis bivariat dengan uji Chi-square dan analisis multivariat dengan uji regresi logistik serta rasio Odds.Hasil: Didapatkan 140 subjek dengan PGK stadium V yang masing-masing kelompok terdiri dari 70 orang. Pada kelompok kasus, sebanyak 85,7% adalah stroke iskemik dan sisanya stroke hemoragik. Lama HD berhubungan dengan kejadian stroke. Pada uji multivariat, subjek yang menderita diabetes melitus (DM) berisiko mengalami stroke sebesar 0,14 kali dibandingkan yang tidak DM dan subjek yang menjalani HD >12 bulan berisiko mengalami stroke 4,05 kali lebih besar dibandingkan yang menjalani HD <12 bulan.Diskusi: Terdapat pengaruh faktor risiko DM dan lama hemodialisis terhadap kejadian stroke iskemik pada pasien PGK stadium V yang menjalani HD.Kata kunci: Hemodialisis, penyakit ginjal kronik, stroke

scholarly journals Global Burden of Stroke

2018 ◽  
Vol 38 (02) ◽  
pp. 208-211 ◽  
Author(s):  
Mira Katan ◽  
Andreas Luft
Keyword(s):  
Hemorrhagic Stroke ◽  
Middle Income ◽  
Stroke Incidence ◽  
Middle Income Countries ◽  
The Past ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Incidence And Mortality ◽  
Geographical Regions ◽  
Life Years Lost

AbstractStroke is the second leading cause of death and a major cause of disability worldwide. Its incidence is increasing because the population ages. In addition, more young people are affected by stroke in low- and middle-income countries. Ischemic stroke is more frequent but hemorrhagic stroke is responsible for more deaths and disability-adjusted life-years lost. Incidence and mortality of stroke differ between countries, geographical regions, and ethnic groups. In high-income countries mainly, improvements in prevention, acute treatment, and neurorehabilitation have led to a substantial decrease in the burden of stroke over the past 30 years. This article reviews the epidemiological and clinical data concerning stroke incidence and burden around the globe.

Abstract T MP99: What Are the Blood Pressure Levels Associated With the Lowest Stroke Rates in the Elderly? Findings From the Reasons for Geographic and Racial Differences in Stroke (regards) Cohort Study

Stroke ◽  
2014 ◽  
Vol 45 (suppl_1) ◽  
Author(s):  
Maciej Banach ◽  
Samantha Bromfield ◽  
George Howard ◽  
Virginia J Howard ◽  
Alberto Zanchetti ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Incidence Rate ◽  
Racial Differences ◽  
Stroke Risk ◽  
Reference Group ◽  
Elderly Persons ◽  
Stroke Incidence ◽  
Increased Risk ◽  
Adjusted Incidence Rate ◽  
Adjusted Incidence

OBJECTIVES: To identify the blood pressure (BP) level associated with the lowest stroke incidence in elderly persons taking antihypertensive medication in the REasons for Geographic And Racial Differences in Stroke (REGARDS) study. METHODS: We categorized 13,948 REGARDS participants with hypertension into 3 age groups: 55-64, 65-74 and ≥75 years old and 5 levels of treated systolic BP (SBP): <120 (reference group), 120-129, 130-139, 140-149, and ≥150 mmHg, and 4 levels of diastolic BP (DBP) levels: <70 (reference group), 70-79, 80-89, and ≥90 mmHg. Participants without a history of stroke were followed for a median of 5.7 years (maximum 8.5 years) for incident stroke (n=425). RESULTS: For participants at age 55-64 SBP level <120 mmHg and DBP <70 mmHg were associated with the lowest risk of stroke (incidence per 1,000 person-years: 2.4, 95%Cl: 1.4-4.0 and 2.5, 95%Cl: 1.3-4.7, respectively). Higher stroke risk was observed at SBP ≥140 mmHg. For those aged 65-74, stroke incidence was increased at SBP ≥130 mmHg and at lower DBP levels (with the lowest stroke risk for DBP ≥90 mmHg). For participants ≥75 years SBP ≥150 mmHg was associated with the highest risk of stroke (incidence rate: 15.0, 95%Cl: 10.5-21.3) but no increased risk was observed for SBP between 120-149 mmHg. For DBP, stroke incidence was highest for DBP <70 mmHg (adjusted incidence rate: 9.8; 95%Cl: 6.8-14.1), and lowest for DBP ≥90 mmHg (adjusted incidence rate: 6.5; 95%Cl: 2.9-14.5) (see table). CONCLUSIONS: These results suggest that the lowest risk for stroke for the participants between 55-64 years old are at BP levels <140/70 mmHg, for persons 65-74 we should aim at SBP levels <130 mmHg, and for the oldest patients at SBP <150 with DBP ≥90 mmHg for both groups. For participants aged ≥65 a caution should be kept with the reduction of DBP <90 mmHg, what requires further investigations. Key words: blood pressure, elderly, hypertension, treatment, mortality, stroke.

Abstract 183: Depressive Symptoms and Incident Stroke in Black and White Participants in the REGARDS Study

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Audrey L Austin ◽  
Michael G Crowe ◽  
Martha R Crowther ◽  
Virginia J Howard ◽  
Abraham J Letter ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Depressive Symptoms ◽  
Racial Differences ◽  
Stroke Risk ◽  
Depression Scale ◽  
Stroke Incidence ◽  
Blacks And Whites ◽  
The Impact

Background and Purpose: Research suggests that depression may contribute to stroke risk independent of other known risk factors. Most studies examining the impact of depression on stroke have been conducted with predominantly white cohorts, though blacks are known to have higher stroke incidence than whites. The purpose of this study was to examine depressive symptoms as a risk factor for incident stroke in blacks and whites, and determine whether depressive symptomatology was differentially predictive of stroke among blacks and whites. Methods: The REasons for Geographic and Racial Differences in Stroke (REGARDS), is a national, population-based longitudinal study designed to examine risk factors associated with black-white and regional disparities in stroke incidence. Among 30,239 participants (42% black) accrued from 2003-2007, excluding those lacking follow-up or data on depressive symptoms, 27,557 were stroke-free at baseline. As of the January 2011 data closure, over an average follow-up of 4.6 years, 548 incident stroke cases were verified by study physicians based on medical records review. The association between baseline depressive symptoms (assessed via the Center for Epidemiological Studies Depression scale, 4-item version) and incident stroke was analyzed with Cox proportional hazards models adjusted for demographic factors (age, race, and sex), stroke risk factors (hypertension, diabetes, smoking, atrial fibrillation, and history of heart disease), and social factors (education, income, and social network). Results: For the total sample, depressive symptoms were predictive of incident stroke. The association between depressive symptoms and stroke did not differ significantly based on race (Wald X 2 = 2.38, p = .1229). However, race-stratified analyses indicated that the association between depressive symptoms and stroke was stronger among whites and non-significant among blacks. Conclusions: Depressive symptoms were an independent risk factor for incident stroke among a national sample of blacks and whites. These findings suggest that assessment of depressive symptoms may warrant inclusion in stroke risk scales. The potential for a stronger association in whites than blacks requires further study.

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