Cardiovascular Diseases Commons^™

Iron Reduction Response And Demographic Differences Between Diabetics And Non-Diabetics With Cardiovascular Disease Entered To A Controlled Clinical Trial, Leo Zacharski, Galina Shamayeva, Bruce Chow

Dartmouth Scholarship

Iron-catalyzed oxygen free radical-induced oxidative stress mediates the pathogenesis of diabetes and cardiovascular disease (CVD). Diabetics (n=473) and non-diabetics (n=804) with CVD entered to a randomized trial of iron (ferritin) reduction by calibrated phlebotomy (www.clinicaltrials.gov, Identifier NCT00032357) had comparable iron measures at entry but diabetics had greater burden of CVD and comorbidities, lower hemoglobin and hematocrit levels, and higher glucose levels than non-diabetics. Entry iron measures were lower in diabetics on hypoglycemic therapy compared to diabetics untreated previously. Diabetics and non-diabetics had comparable iron measures during follow-up. Loess analysis of paired ferritin and hemoglobin, and paired ferritin and glucose levels …

Associations Between Genetic Variants In Mrna Splicing-Related Genes And Risk Of Lung Cancer: A Pathway-Based Analysis From Published Gwass, Yongchu Pan, Hongliang Liu, Yanru Wang, Xiaozheng Kang, Kouros Owzar, Younghun Han

Dartmouth Scholarship

mRNA splicing is an important mechanism to regulate mRNA expression. Abnormal regulation of thisprocess may lead to lung cancer. Here, we investigated the associations of 11,966 single-nucleotide polymorphisms (SNPs) in 206 mRNA splicing-related genes with lung cancer risk by using the summarydata from six published genome-wide association studies (GWASs) of Transdisciplinary Research in Cancerof the Lung (TRICL) (12,160 cases and 16,838 controls) and another two lung cancer GWASs of Harvard University (984 cases and 970 controls) and deCODE (1,319 cases and 26,380 controls). We found that a total of 12 significant SNPs with false discovery rate (FDR) ≤0.05 were mapped …

Patient‐Defined Goals For The Treatment Of Severe Aortic Stenosis: A Qualitative Analysis, Megan Coylewright, Roseanne Palmer, Elizabeth S. O'Neill, John F. Robb, Terri Fried

Dartmouth Scholarship

Patients with severe aortic stenosis (AS) at high risk for aortic valve replacement are a unique population with multiple treatment options, including medical therapy, surgical aortic valve replacement and transcatheter aortic valve replacement (TAVR). Traditionally, in elderly populations, goals of treatment may favour quality of life over survival. Professional guidelines recommend that clinicians engage patients in shared decision making, a process that may lead to decisions more aligned with patient-defined goals of care. Goals of care for high-risk patients with AS are not well defined in the literature, and patient-reported barriers to shared decision making highlight the need for explicit …

Effect Of Calcium Supplements On Risk Of Myocardial Infarction And Cardiovascular Events: Meta-Analysis, Mark J. Bolland, Allison Avenell, John A. Baron, A. Grey

Dartmouth Scholarship

Objective: To investigate whether calcium supplements increase the risk of cardiovascular events.

Osteoporosis is a major cause of morbidity and mortality in older people. Calcium supplements margin- ally reduce the risk of fracture, and most guidelines recommend adequate calcium intake as an integral part of the prevention or treatment of osteoporosis. Consequently, calcium supplements are commonly used by people over the age of 50. Observational stu- dies suggest that high calcium intake might protect against vascular disease, and the findings are consis- tent with those of interventional studies of calcium sup- plements thatshow improvementin some vascular risk factors. In contrast, …

Impacts Of Sara And Agr In Staphylococcus Aureus Strain Newman On Fibronectin-Binding Protein A Gene Expression And Fibronectin Adherence Capacity In Vitro And In Experimental Infective Endocarditis, Yan-Qiong Xiong, Arnold S. Bayer, Michael R. Yeaman, Willem Van Wamel, Adhar C. Manna, Ambrose L. Cheung

Dartmouth Scholarship

We investigated the impacts of sarA and agr on fnbA expression and fibronectin-binding capacity in Staphylococcus aureus in vitro and in experimental endocarditis. Although sarA up-regulated and agr down-regulated both fnbA expression and fibronectin binding in vitro and in vivo, fnbA expression was positively regulated in the absence of both global regulators. Thus, additional regulatory loci contribute to fnbA regulation and fibronectin-binding capacities in S. aureus.

Probucol Prevents Early Coronary Heart Disease And Death In The High-Density Lipoprotein Receptor Sr-Bi/Apolipoprotein E Double Knockout Mouse, Anne Braun, Songwen Zhang, Helena E. Miettinen, Shamsah Ebrahim, Teresa M. Holm, Eliza Vasile, Mark J. Post

Dartmouth Scholarship

Mice with homozygous null mutations in the high-density lipoprotein receptor SR-BI (scavenger receptor class B, type I) and apolipoprotein E genes fed a low-fat diet exhibit a constellation of pathologies shared with human atherosclerotic coronary heart disease (CHD): hypercholesterolemia, occlusive coronary atherosclerosis, myocardial infarctions, cardiac dysfunction (heart enlargement, reduced systolic function and ejection fraction, and ECG abnormalities), and premature death (mean age 6 weeks). They also exhibit a block in RBC maturation and abnormally high plasma unesterified-to-total cholesterol ratio (0.8) with associated abnormal lipoprotein morphology (lamellar/vesicular and stacked discoidal particles reminiscent of those in lecithin/cholesterol acyltransferase deficiency and cholestasis). Treatment …