202 results match your criteria: "Johns Hopkins University School of Medicine Baltimore MD.[Affiliation]"

Objectives: CD209L and its homologous protein CD209 act as alternative entry receptors for the SARS-CoV-2 virus and are highly expressed in the virally targeted tissues. We tested for the presence and clinical features of autoantibodies targeting these receptors and compared these with autoantibodies known to be associated with COVID-19.

Methods: Using banked samples ( = 118) from Johns Hopkins patients hospitalised with COVID-19, we defined autoantibodies against CD209 and CD209L by enzyme-linked immunosorbent assay (ELISA).

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Background: Cardiovascular disease (CVD) prevalence varies widely among Asian American adults. The American Heart Association added healthy sleep to its metrics to define ideal cardiovascular health. Little is known about the association between sleep and CVD prevalence among Asian subgroups.

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Article Synopsis
  • HIV-associated cardiovascular disease (CVD) is becoming more common, but the reasons for this increased risk in people living with HIV (PWH) are not well understood, particularly regarding lipoprotein(a) [Lp(a)].
  • A study involving 65 PWH and 52 controls found that Lp(a) levels were significantly higher in PWH, and they showed lower coronary endothelial function (CEF) as measured by cardiac imaging.
  • The study concluded that elevated Lp(a) in PWH is linked to impaired CEF, suggesting that Lp(a) might contribute to the increased cardiovascular risk in this population.
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Background: Work-related stress is a psychosocial risk factor linked to a higher risk of cardiovascular disease. However, the association between work-related stress and cardiovascular health (CVH) is not well established. We estimated the association between work-related stress and CVH in a multiethnic sample of adults free of cardiovascular disease at baseline.

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Background: Older adults with non-ST-segment-elevation acute coronary syndrome are less likely to undergo an invasive strategy compared with younger patients. Randomized controlled trials traditionally exclude older adults because of their high burden of geriatric conditions.

Methods And Results: We searched for randomized controlled trials comparing invasive versus medical management or a selective invasive (conservative) strategy for older patients (age≥75 years) with non-ST-segment-elevation acute coronary syndrome.

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  • Prepregnancy diabetes and obesity are significant risk factors for hypertensive disorders of pregnancy (HDPs), with 7% of birthing individuals in a study experiencing HDP.
  • Among different racial and ethnic groups, HDP was most prevalent in American Indian and Alaska Native individuals, while diabetes and obesity showed the strongest associations with HDPs in Native Hawaiian and Other Pacific Islander and Asian individuals, respectively.
  • The study found that diabetes and obesity account for notable population attributable fractions of HDPs, emphasizing the need for targeted interventions, especially among vulnerable populations such as Native Hawaiian and Other Pacific Islander individuals.
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Precision medicine, which among other aspects includes an individual's genomic data in diagnosis and management, has become the standard-of-care for Mendelian cardiovascular disease (CVD). However, early identification and management of asymptomatic patients with potentially lethal and manageable Mendelian CVD through screening, which is the promise of precision health, remains an unsolved challenge. The reduced costs of genomic sequencing have enabled the creation of biobanks containing in-depth genetic and health information, which have facilitated the understanding of genetic variation, penetrance, and expressivity, moving us closer to the genotype-first screening of asymptomatic individuals for Mendelian CVD.

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  • Type A aortic dissection poses risks for brain complications after surgery, and the study investigates the use of quantitative electroencephalography to predict brain function outcomes postoperatively.
  • The method called amplitude-integrated electroencephalography (aEEG) successfully correlated postoperative brain activity measurements with adverse neurological outcomes, showing strong predictive accuracy.
  • Overall, while aEEG provides significant insights into brain function, the Alberta Stroke Program Early Computed Tomography score was found to be a better predictor of neurological outcomes than aEEG alone.
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Background: The metabolic syndrome phenotype of individuals with obesity is characterized by elevated levels of triglyceride-rich lipoproteins and remnant particles, which have been shown to be significantly atherogenic. Understanding the association between adipokines, endogenous hormones produced by adipose tissue, and remnant cholesterol (RC) would give insight into the link between obesity and atherosclerotic cardiovascular disease.

Methods And Results: We studied 1791 MESA (Multi-Ethnic Study of Atherosclerosis) participants who took part in an ancillary study on body composition with adipokine levels measured (leptin, adiponectin, and resistin) at either visit 2 or visit 3.

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  • The study investigates the relationship between serum calcium levels and ventricular repolarization time, specifically the QT and JT intervals, which are important for heart health.
  • Researchers conducted large-scale genome-wide analyses to explore potential interactions between calcium levels and genetic variants associated with QT and JT intervals, using over 122,000 participants.
  • The results showed limited evidence for the hypothesized calcium interaction effects, suggesting that other factors, such as rare genetic variations or environmental influences, likely play a larger role in the unexplained heritability of QT and JT intervals.
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Background: Prior studies have shown that cardiovascular disease (CVD) can be effectively managed through telehealth. However, there are little national data on the use of telehealth in people with CVD or CVD risk factors. We aimed to determine the prevalence of telehealth visits and visit modality (video versus audio-only) in people with CVD and CVD risk factors.

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Background: Collateral status (CS) plays a crucial role in infarct growth rate, risk of postthrombectomy hemorrhage, and overall clinical outcomes in patients with acute ischemic stroke (AIS) secondary to anterior circulation large-vessel occlusions (LVOs). Hypoperfusion intensity ratio has been previously validated as an indirect noninvasive pretreatment imaging biomarker of CS. In addition to imaging, derangements in admission laboratory findings can also influence outcomes in patients with AIS-LVO.

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  • Acute ischemic stroke (AIS) patients' collateral status (CS) is a crucial factor in predicting favorable outcomes, with relative cerebral blood flow (rCBF) being a key measurement for evaluating CS.
  • A study analyzing 221 AIS patients found that factors like male gender, chronic kidney disease, higher stroke severity (NIH Stroke Scale score ≥12), and low systolic blood pressure (<140) are linked to poor collateral status (rCBF <38%).
  • The findings emphasize the importance of these baseline characteristics and lab values in determining the severity of collateral blood flow and potential patient outcomes in AIS due to large vessel occlusion.
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3D-printed electrochemical cells for multi-point aptamer-based drug measurements.

Sens Diagn

September 2024

Biochemistry, Cellular and Molecular Biology Program, Johns Hopkins University School of Medicine 316 Hunterian Building, 725 North Wolfe Street Baltimore MD 21205 USA +1 443 287 4798.

Electrochemical aptamer-based (E-AB) sensors achieve detection and quantitation of biomedically relevant targets such as small molecule drugs and protein biomarkers in biological samples. E-ABs are usually fabricated on commercially available macroelectrodes which, although functional for rapid sensor prototyping, can be costly and are not compatible with the microliter sample volumes typically available in biorepositories for clinical validation studies. Seeking to develop a multi-point sensing platform for sensor validation in sample volumes characteristic of clinical studies, we report a protocol for in-house assembly of 3D-printed E-ABs.

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Self-assembled monolayers (SAMs) are employed in electrochemical biosensors to passivate and functionalize electrode surfaces. These monolayers prevent the occurrence of undesired electrochemical reactions and act as scaffolds for coupling bioaffinity reagents. Thiols are the most common adlayer used for this application; however, the thiol-gold bond is susceptible to competitive displacement by naturally occurring solvated thiols in biological fluids, as well as to desorption under continuous voltage interrogation.

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Frailty and Cardiovascular Health.

J Am Heart Assoc

August 2024

VA Boston Healthcare System Boston MA USA.

Article Synopsis
  • * Frailty serves as an important indicator in CVD patients, affecting prevention strategies and complicating their participation in major clinical trials.
  • * The review emphasizes the need for better understanding and management of frailty to improve CVD care and explores future approaches for detecting and modifying frailty in affected individuals.
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  • Previous studies showed varying practices in peripheral vascular interventions (PVIs) for claudication, but limited data existed on long-term trends; this study aimed to fill that gap over 12 years in the U.S.
  • A retrospective analysis of Medicare claims identified 599,197 PVIs performed, with significant increases in the use of tibial PVI (1% per year) and atherectomy (1.6% per year), along with a shift from hospital settings to outpatient centers (up 4% per year).
  • Total Medicare charges associated with these procedures rose by about $11.98 million each year, highlighting disparities in treatment based on race and a need for better value-based care in claudication
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Following the publication of results from multiple landmark cardiovascular outcome trials of antihyperglycemic medications over the past 8 years, there has been a major shift in the focus of care for people with type 2 diabetes, from control of hyperglycemia to managing cardiovascular risk. Multiple international cardiology and diabetes society guidelines and recommendations now endorse sodium-glucose cotransporter-2 inhibitors and glucagon-like protein-1 receptor agonists as first-line therapies to mitigate cardiovascular risk. The most recent publication is the 2023 European Society of Cardiology guideline on the management of cardiovascular disease in those with type 2 diabetes that, for the first time, recommends use of both classes of medications for the mitigation of cardiovascular risk for those with or at high risk for atherosclerotic cardiovascular disease, heart failure, and chronic kidney disease.

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Background: Mobile health technology's impact on cardiovascular risk factor control is not fully understood. This study evaluates the association between interaction with a mobile health application and change in cardiovascular risk factors.

Methods And Results: Participants with hypertension with or without dyslipidemia enrolled in a workplace-deployed mobile health application-based cardiovascular risk self-management program between January 2018 and December 2022.

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Background: Cardiovascular disease is the leading cause of mortality in patients with kidney failure, and their risk of cardiovascular events is 10 to 20 times higher as compared with the general population.

Methods And Results: We evaluated 508 822 patients who initiated dialysis between January 1, 2005 and December 31, 2014 using the United States Renal Data System with linked Medicare claims. We determined hospitalization rates for cardiovascular events, defined by acute coronary syndrome, heart failure, and stroke.

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Europe and North America are the 2 largest recipients of international migrants from low-resource regions in the world. Here, large differences in cardiovascular disease (CVD) morbidity and death exist between migrants and the host populations. This review discusses the CVD burden and its most important contributors among the largest migrant groups in Europe and North America as well as the consequences of migration to high-income countries on CVD diagnosis and therapy.

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