Publications by authors named "Quesada O"

Background: Coronary microvascular and vasomotor dysfunction (CMVD) is associated with a threefold increased risk of major adverse cardiovascular events (MACE) and is the primary mechanism responsible for angina/ischemia in patients with nonobstructive coronary artery disease (ANOCA/INOCA). Proper assessment for CMVD is vital to provide targeted treatment and improve patient outcomes. Invasive coronary functional testing (ICFT) is the "gold standard," for CMVD assessment and can be used to diagnose all endotypes.

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Background: Women's Heart Centers (WHC) are comprehensive, multidisciplinary care centers designed to close the existing gap in women's cardiovascular care. The WHC at The Christ Hospital Heart and Vascular Institute (TCH-WHC) in Cincinnati, Ohio was established in October of 2020, and is a specialized coronary microvascular and vasomotor dysfunction (CMVD) program.

Methods: The TCH-WHC focuses its efforts across five pillars: patient care, research, education, community outreach and advocacy, and grants and philanthropy.

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Background: In patients with angina and non-obstructive coronary artery disease (ANOCA), diagnosis of coronary microvascular dysfunction (CMD) remains an unmet need. Magnetocardiography (MCG), is a rest-based, non-invasive scan that can detect weak electrophysiological changes that occur at the early phase of ischemia.

Objective: This study assessed the ability of MCG to detect CMD in ANOCA patients as compared to reference standard, invasive coronary flow reserve (CFR).

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Psychosocial stress can affect cardiovascular health through multiple pathways. Certain stressors, such as socioeconomic disadvantage, childhood adversity, intimate partner violence, and caregiving stress, are especially common among women. The consequences of stress begin at a young age and persist throughout the life course.

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Article Synopsis
  • Maternal mortality in the U.S. is a significant public health issue, with cardiovascular disease (CVD) being a leading cause of related deaths and health complications.
  • Labor and delivery pose heightened risks for pregnant individuals with CVD, yet there is varied approach to management due to a lack of high-quality randomized studies.
  • To address this, a panel of experts including cardiologists and obstetricians has come together to create practical guidelines for managing labor and delivery for high-risk patients with CVD, covering aspects like delivery method, timing, and use of medical devices.
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A common feature in patients with abdominal aortic aneurysms (AAAs) is the formation of a nonocclusive intraluminal thrombus (ILT) in regions of aortic dilation. Platelets are known to maintain hemostasis and propagate thrombosis through several redundant activation mechanisms, yet the role of platelet activation in the pathogenesis of AAA-associated ILT is still poorly understood. Thus, we sought to investigate how platelet activation affects the pathogenesis of AAA.

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Cardiovascular disease affects 37% of Hispanic women and is the leading cause of death among Hispanic women in the United States. Hispanic women have a higher burden of cardiovascular risk factors, are disproportionally affected by social determinants of health, and face additional barriers related to immigration, such as discrimination, language proficiency, and acculturation. Despite this, Hispanic women show lower rates of cardiovascular disease and mortality compared with non-Hispanic White women.

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Purpose Of Review: Characterize the risk of cardiovascular disease (CVD) in individuals with polycystic ovarian syndrome (PCOS). Review the pathophysiological pathways that confers CVD risk in individuals with PCOS and interventions to reduce CVD risk.

Recent Findings: PCOS is a complex syndrome characterized by hyperandrogenism, ovulatory dysfunction, and polycystic ovaries that has metabolic and cardiovascular implications.

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Article Synopsis
  • Hypertensive disorders of pregnancy (HDP) are linked to long-term cardiovascular risks for women, though the reasons are not fully understood.
  • A study involving 5,168 Hispanic/Latina women revealed that 14% had a history of de novo HDP, which was associated with lower left ventricle ejection fraction and higher risks of abnormal cardiac geometry.
  • Findings indicate that previous HDP can lead to measurable cardiac issues in women, with current hypertension only partially explaining these effects.
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Importance: The clinical characteristics and prognosis of patients with ST-segment elevation myocardial infarction (STEMI) with nonobstructive coronaries (MINOCA) are largely unknown.

Objective: To assess differences in 5-year mortality in patients presenting with STEMI due to MINOCA and MINOCA mimickers as compared with obstructive disease.

Design, Setting, And Participants: A retrospective analysis of a prospective registry-based cohort study of consecutive STEMI activations at 3 regional Midwest STEMI programs.

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  • The Cys-loop pentameric ligand-gated ion channels, including nicotinic acetylcholine receptors (nAChRs), are important proteins studied for their structure and function in living organisms.
  • Our team has isolated a highly pure form of nAChR (nAChR-DC) in a detergent complex, facilitating advanced research like high-throughput crystallization.
  • We characterized the nAChR subunits using advanced techniques, which revealed specific types of N-glycans, including high-mannose glycans, particularly the oligomannose species Man8-9GlcNac2.
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  • * In a study with 101 ANOCA patients, significant improvements were observed after EECP treatment in various measures like CCS angina class, walking ability, and weekly angina episodes.
  • * The results suggest that EECP can effectively reduce angina severity and enhance exercise tolerance, making it a valuable option for managing ANOCA alongside standard medical therapies.
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Cardiovascular disease (CVD) remains the leading cause of death for women. Adverse pregnancy outcomes, including hypertensive disorders of pregnancy, gestational diabetes mellitus, preterm delivery, and low birth weight-affecting up to 30% of pregnant women-increase the risk of CVD. Early menarche and polycystic ovary syndrome are implicated.

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  • Centers focused on coronary function testing play an essential role in diagnosing and treating angina with nonobstructive coronary arteries (ANOCA).
  • Utilizing a mix of lifestyle changes, medications, and devices can significantly enhance the quality of life for patients suffering from ANOCA.
  • The success of treatment programs relies on multidisciplinary teams that personalize care, alongside collaborative research efforts that standardize assessments and data collection for future clinical trials.
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  • Angina with nonobstructive coronary arteries (ANOCA) affects nearly 50% of patients undergoing coronary angiography and includes issues like microvascular dysfunction and coronary spasms.
  • Patients often struggle to get diagnosed, leading to repeated medical visits and feelings of invalidation, which can contribute to anxiety and depression.
  • Recent advancements in diagnostic testing, specifically coronary function testing (CFT), allow for better, noninvasive evaluation of ANOCA, aiding in the identification of specific coronary issues.
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  • COVID-19 elevates the risk of ST-segment elevation myocardial infarction (STEMI) and is linked to more cases of nonobstructive coronary artery disease.
  • A young female patient with COVID-19 experienced STEMI, revealing slow blood flow in several heart vessels during angiography, likely due to tiny blood clots.
  • Three months later, she showed signs of coronary microvascular dysfunction (CMD), indicating potential progression from microvascular clots to more severe heart issues.
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The chemical environment in aqueous solutions greatly influences the ability of amphiphilic molecules such as lipopolysaccharides (LPS) to aggregate into different structural phases in aqueous solutions. Understanding the substrate's morphology and conditions of aqueous solution that favor both enzymatic activity and the disruption of LPS aggregates are crucial in developing agents that can counteract the new trend of multidrug resistance by gram-negative bacteria. In this study, we developed two LPS morphologies using LPS from as a model to study the hydrolytic response when using a lipase treatment.

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Women with signs and symptoms of ischemia and no obstructive coronary artery disease (INOCA) often have coronary microvascular dysfunction (CMD). It can be diagnosed by coronary function testing (CFT), which is an invasive coronary angiogram procedure. Frequently, these women have persistent angina despite medical therapy, but it is not clear whether it is due to worsening or persistent CMD or inadequate therapy.

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Angina or ischemia with no obstructive coronary disease (ANOCA/INOCA) is a common but under-treated condition due to poorly understood pathophysiologic mechanisms, limited diagnostic tools, and lack of proven targeted therapy. Coronary microvascular dysfunction (CMD) occurs when the microvasculature inadequately perfuses the myocardium under stress, or at rest in the case of microvascular spasm resulting in ANOCA/INOCA. Coronary functional angiography (CFA) measures endothelial independent microvascular dysfunction (coronary flow reduction <2.

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  • The study examines the relationship between fitness levels and long-term cardiovascular outcomes in women with metabolic syndrome and ischemic heart disease.
  • It follows a cohort of 492 women over an average of 8.6 years, classifying them into groups based on fitness and metabolic health status.
  • Results show that unfit women, particularly those with metabolic syndrome, have significantly higher risks of cardiovascular events and mortality compared to their fit counterparts, highlighting the importance of both fitness and metabolic health.
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The main objective of the present study was to find detergents that can maintain the functionality and stability of the Torpedo californica nicotinic acetylcholine receptor (Tc-nAChR). We examined the functionality, stability, and purity analysis of affinity-purified Tc-nAChR solubilized in detergents from the Cyclofos (CF) family [cyclofoscholine 4 (CF-4), cyclofoscholine 6 (CF-6), and cyclofloscholine 7 (CF-7)]. The functionality of the CF-Tc-nAChR-detergent complex (DC) was evaluated using the Two Electrode Voltage Clamp (TEVC) method.

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Background: The prognosis of ST-segment elevation myocardial infarction with non-obstructive coronaries (STE-MINOCA) is largely unknown.

Methods: The objective of this study is to evaluate the prevalence, characteristics, and 5-year mortality of patients with STE-MINOCA compared to STEMI with coronary artery obstruction (STEMI-Obstruction) using a multicenter cohort of consecutive STEMI patients at 3 regional Midwest STEMI programs from 2003 to 2020. STE-MINOCA was defined based on (1) coronary stenosis < 60% by visual estimation, (2) ischemia with elevated troponin, and (3) no alternative diagnosis.

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