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Life Sciences

Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.

447,757 articles | 2542 topics

Health and Medicine

Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.

431,843 articles | 751 topics

Social Sciences

Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.

260,756 articles | 745 topics

Physical Sciences

Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.

257,913 articles | 1552 topics

Applied Sciences and Engineering

Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.

225,386 articles | 998 topics

Scientific Community

Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.

193,043 articles | 157 topics

Space Sciences

Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.

29,662 articles | 175 topics

Research Methods

Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.

21,889 articles | 139 topics

Mathematics

Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.

3,023 articles | 113 topics

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Waist size found to be predictor of heart failure in both men and women

A new study published in Circulation: Heart Failure found that a larger waist circumference is associated with an increased risk of heart failure in both men and women. The research examined two Swedish population-based studies and found that excess body weight was linked to higher rates of heart failure, regardless of BMI.

Exercise improves quality of life for heart failure patients

A clinical trial found that exercise significantly improves the lives of heart failure patients by improving physical limitations, symptoms, and overall quality of life. The study, which enrolled over 2,300 patients, showed a five-point gain on quality-of-life measures for those who exercised, compared to those who received standard care.

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Heart Failure Congress 2009

The European Society of Cardiology reports that heart failure is the most prevalent chronic cardiac condition in Europe, with 30 million cases identified. Recent improvements in diagnosis and treatment have led to a significant reduction in mortality rates, but challenges persist in prevention, diagnosis, and treatment.

Artificial pump effectively backs up failing hearts

A new, smaller, and lighter implantable heart pump has been shown to be effective in bridging patients with severe heart failure to eventual transplantation. The device, called a left ventricular assist device (LVAD), was tested on 98 patients and found to improve their quality of life and survival rates.

Heart failure risk model validated

Researchers at Emory University School of Medicine developed the Health ABC Heart Failure Model to predict risk of new onset heart failure in the elderly. The model, validated with a separate library of patient data, identifies high-risk individuals for targeted interventions.

Extra STICH not necessary in surgical treatment of heart failure

Researchers compared two groups of patients with coronary artery disease and severe heart failure, finding that surgical ventricular reconstruction made no difference in key clinical outcomes. The study's findings challenge conventional wisdom that making the heart smaller and more normal makes it stronger.

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Extra 'STICH' in bypass adds no benefit to quality of life

Researchers found that surgical ventricular reconstruction did not improve patients' survival or quality of life, but increased hospitalization costs. The study compared outcomes between patients who received bypass surgery alone and those with added SVR, revealing no significant difference in quality of life measures.

Defibrillators may have little benefit for older people with comorbidities

A study published in CMAJ found that implanted defibrillators offer limited survival benefits for older patients with comorbidities. However, younger patients and those without kidney disease may see a benefit from implantable defibrillators to prevent sudden death. The study analyzed over 14,000 patients with heart failure.

New target for heart failure therapy identified

Researchers at Thomas Jefferson University identified a novel signaling pathway mediating aldosterone production, which promotes heart failure. Blocking beta-arrestin-1 could lead to lower aldosterone levels and alleviate negative remodeling processes in the injured heart.

Study shows prevalence of anergia in people with failing hearts

Researchers found significant discrepancies between self-reported fatigue and actigraphy readings, suggesting a link between heart failure, sleep disorders, and impairments in health-related quality of life. The study may lead to different approaches to patients suffering from anergia or 'lack of energy'.

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New specialty to focus on advanced heart failure and heart transplantation

The American Board of Medical Specialties approves a new subspecialty in Advanced Heart Failure and Transplant Cardiology, which will provide high-level care for patients with worsening heart failure. The first certified cardiologists will be trained by 2010, offering improved treatment options and outcomes for heart failure patients.

Heart failure linked to cognitive impairment

A new study published by Elsevier found that nearly half of patients with heart failure have problems with memory and other aspects of cognitive functioning. Memory problems, especially short-term memory, were the most common type of cognitive deficit in these patients.

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UC Davis research shows that newly discovered drug reduces heart enlargement

Researchers at UC Davis have discovered a new class of drugs that can reduce heart swelling and reverse heart failure. The study, led by cardiologist Nipavan Chiamvimonvat and entomologist Bruce Hammock, found that the enzyme soluble epoxide hydrolase plays a key role in the development of cardiac hypertrophy.

Biomarkers as a guide to therapy in heart failure patients

A study published in JAMA found that intensive treatment guided by N-terminal brain natriuretic peptide (BNP) levels significantly improved hospital-free survival in heart failure patients under 75 years old. However, this benefit was not observed in patients over 75 years old.

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JCI online early table of contents: Jan. 5, 2009

Researchers at Massachusetts General Hospital and University of Pennsylvania found that COX2 in mouse nerve cells plays a crucial role in pain caused by physical insult, while PDE5 inhibition may prevent hypertrophy in the mouse heart. These findings have implications for treating conditions such as postoperative and arthritic inflamma...

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Gene therapy reversed heart damage in heart failure

Researchers at Thomas Jefferson University's Center for Translational Medicine successfully reversed heart damage in rats with heart failure using gene therapy. The treatment, which involves administering a peptide called βARKct, inhibited the activation of a kinase that contributes to heart failure deterioration.

New statement outlines essentials of heart failure clinics

The Heart Failure Society of America has developed a consensus statement outlining the structure and process of care provided by heart failure clinics. The clinics aim to reduce mortality and rehospitalization rates while improving quality of life for patients through individualized patient care.

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Implantable monitor may help in managing diastolic heart failure

A new study suggests that an implantable hemodynamic monitor can help guide medical treatment in patients with diastolic heart failure, reducing the risk of heart failure events. The device continuously records data on heart function and other key variables, allowing healthcare professionals to make adjustments in medical therapy.

Study finds treatment fails to improve common form of heart failure

A large international study found that treatment with the medication irbesartan did not reduce the risk of death or hospitalization for cardiovascular causes among patients with diastolic heart failure, nor did it improve quality of life. The study also showed that the medication was safe for patients with the condition.

Researchers present new theory that may lead to effective heart failure treatments

Researchers at Medical University of South Carolina present a new theory that may lead to effective heart failure treatments by identifying the role of matrix metalloproteinases (MMPs) in the disease. The study suggests that MMPs, similar to those found in cancerous tumors, contribute to the progression of heart failure, leading to the...

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New biomarker for heart failure identified

Researchers have identified a new biomarker for heart failure, resistin, which can independently predict an individual's risk of developing the condition. Resistin levels were found to increase the risk of new-onset heart failure by 38% and were a stronger predictor than other inflammatory markers.

Scientists map steps to block key enzyme action in heart failure

Researchers at Johns Hopkins have identified the chemical step involved in blocking the phosphodiesterase 5 enzyme, which slows down the breakdown of cyclic GMP and contributes to heart failure. The discovery paves the way for targeted drug therapies to stall progression of heart failure and hypertrophy.

Treating heart failure with a gas

Researchers at Emory University School of Medicine found that low concentrations of hydrogen sulfide can protect mice from heart failure. The gas is administered intravenously to treat humans with heart failure, showing promising results in regaining heart function and reducing mortality.

Exercise is safe, improves outcomes for patients with heart failure

Patients with moderate to severe heart failure who exercise regularly have a lower risk of hospitalization or death, according to a comprehensive study. The study found that exercise led to an 11% reduction in the risk of hospitalization or death for those in the exercise group.

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Heart failure hospitalization rates rise among nation's seniors

The study found that heart failure hospitalization rates have increased dramatically among seniors in the US, with a 131% rise from 1980 to 2006. This trend is particularly concerning for women, who experienced a higher annual percentage increase rate than men.

Apple Watch Series 11 (GPS, 46mm)

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Heart failure patients have higher risk of fractures

Researchers found that heart failure patients have a fourfold higher risk of fracture and six times the risk of hip fracture compared to other heart patients. Heart failure and osteoporosis share common risk factors such as older age, female sex, smoking, and type-2 diabetes.

2 beta blockers found to also protect heart tissue

Researchers at Duke University Medical Center discovered that two common beta-blockers can stimulate a pathway that promotes cell survival and protects heart tissue. The study finds that alprenolol and carvedilol may have greater potential to repair the heart and prevent further damage.

Defibrillators save lives, don't diminish quality of life

A large study found that ICDs improve longevity without significantly affecting the quality of life for heart failure patients. Researchers monitored patients' quality of life scores over 30 months and found improvements at 3-12 months, but differences diminished over time.

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Heart failure implementation

The 2008 ESC guidelines cover acute and chronic heart failure, prioritizing treatment implementation and palliative care. The document identifies gaps in evidence and aims to focus future clinical research on important issues.

New diagnostic tools and biomarkers

The Bach study reveals MR-proANP is equally useful as BNP and NT-proBNP for diagnosing acute congestive heart failure. Adding PCT marker supports differential diagnosis of pneumonia vs. heart failure in patients with shortness of breath.

AmScope B120C-5M Compound Microscope

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Cardiac resynchronization: Race, age, geography matter, study shows

A recent study found significant racial, age and geographic disparities in the use of cardiac resynchronization therapy (CRT), a treatment for heart failure. The research examined nearly 34,000 hospital admissions and discovered that CRT was underutilized in certain populations, such as older patients and those from the Northeast.