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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

New study finds key role for VEGF in onset of sepsis

A new study found that vascular endothelial growth factor (VEGF) plays a key role in the onset of sepsis, a leading cause of organ failure and ICU hospitalizations. The study's findings suggest that VEGF could be a novel therapeutic agent for managing this deadly disease.

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UK researcher finds 'switching' compound for angiogenesis

A UK researcher found that VEGF promotes angiogenesis in macular degeneration, but also has an anti-angiogenic effect via SPARC. Controlling SPARC levels may be key to controlling angiogenesis in diseases like cancer. This discovery opens new avenues for treating diseases related to angiogenesis.

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Studies find possible drug targets for improving vascular health

Researchers at Yale University have identified a potential new target for treating vascular disease by inhibiting the protein kinase Akt1. The study found that Akt1 plays a crucial role in the formation of new blood vessels, which is essential for improving blood flow to muscles during exercise.

New technique appears to stop abnormal blood vessel growth

Researchers at Medical College of Georgia have developed a new approach to inhibit blood vessel growth by targeting VEGF production within cells. The technique, which uses a gene that binds to and sequesters VEGF, has shown promising results in reducing destructive blood vessel proliferation by up to two-thirds.

Boosting blood vessels with BDNF

Researchers found BDNF is as effective as VEGF in inducing growth of tiny blood vessels in organs with TrkB-expressing cells. It recruits blood stem cells that contribute to neo-angiogenesis, providing a novel therapeutic protein for organ-specific angiogenesis.

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Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

JCI table of contents March 1, 2005

Researchers at NYU School of Medicine discovered that glycyrrhizic acid can kill cells infected with Kaposi sarcoma-associated herpesvirus, triggering apoptosis in transformed B lymphocytes. This finding suggests a potential new treatment approach for latent viral infections.

Substance in urine predicts development of preeclampsia

A study published in the Journal of the American Medical Association finds that women with low levels of placental growth factor (PlGF) in their urine are highly likely to develop preeclampsia. Researchers plan to refine this finding into a clinical test to screen for high-risk pregnancies.

New pathway identified in angiogenesis

Scientists have discovered a way to manage angiogenesis by stimulating monocytes with GM-CSF, which produces soluble receptors that inhibit the formation of new blood vessels. The approach could provide a new therapeutic strategy for cancer treatment.

Study provides clues to alcohol's cancer connection

A recent study found that ethanol exposure increases tumor size, blood vessel density, and VEGF levels in chick embryos, supporting the hypothesis that ethanol-induced angiogenesis contributes to cancer progression. The study provides new insights into the mechanisms underlying alcohol's association with various types of cancer.

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Green tea polyphenols thwart prostate cancer development at multiple levels

Researchers found that green tea polyphenols reduce levels of insulin-like growth factor-1 (IGF-1) in prostate tumor cells, leading to decreased cell survival and tumor growth. The study also showed that GTP inhibited the expression of proteins associated with metastasis and reduced vascular endothelial growth factor (VEGF) levels.

New insights into muscle adaptation to exercise

Researchers found that exercise increases VEGF production, which leads to an increase in capillaries within specific muscle fiber types. This change ultimately results in an anaerobic to aerobic shift in the affected muscle fibers.

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Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

Bristol scientists find key to unlock body's own cancer defence

A team of researchers has discovered a new form of vascular endothelial growth factor (VEGF) called VEGF165b, which inhibits the growth of new blood vessels required for tumours to grow above one millimetre. This protein is found in normal tissues and can prevent cancer growth by starving tumours of nutrients.

Sandbagging cancer in the bloodstream

Researchers at Scripps Research Institute use a class of compounds known as Src kinase inhibitors to stabilize blood vessels and block tumor cell metastasis. By increasing the protective barrier strength of host blood vessels, the approach prevents cancer cells from exiting the bloodstream, making them vulnerable to immune system attack.

New hope for ALS seen with genetic techniques, growth factors

Researchers have discovered new approaches to treating ALS using genetic techniques and growth factors. A study found that implanting cells to support motor neurons can help stave off the disease, while another team used RNA interference to silence a toxic mutant gene. VEGF was also shown to rescue motor neurons attacked by ALS.

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Angiogenesis therapy successful for peripheral arterial disease

Researchers have successfully developed a gene therapy approach to treat peripheral arterial disease, stimulating blood vessel growth and improving perfusion in damaged leg tissue. The treatment also appeared to prevent programmed cell death, as the researchers reported.

Marijuana ingredient inhibits VEGF pathway required for brain tumor blood vessels

A study found that cannabinoids significantly lowered VEGF activity in laboratory mice and patients with late-stage glioblastoma, providing a potential new approach to treating this aggressive form of cancer. The research suggests that cannabinoid-based therapies may target the VEGF pathway, offering a novel pharmacological target.

New discovery may help transplants survive

A new study by the Schepens Eye Research Institute reveals a previously unknown connection that stimulates immune response in the eye and other parts of the body. By blocking VEGFR-3 growth factor, researchers can arrest the rejection process, leading to improved survival rates for corneal transplant patients.

USC/Norris Cancer researchers show potential of fighting angiogenesis

Researchers found Veglin to be safe and effective in lowering blood levels of key enzymes, showing promise in blocking tumor growth and metastasis. The phase I trial has shown encouraging results in patients with diverse disease types, paving the way for future phase II clinical trials.

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Oxygen therapy may improve vision worsened by diabetes

A study published in Investigative Ophthalmology & Visual Science found that breathing supplemental oxygen for three months reduced fluid buildup and swelling in the macula, and improved visual acuity in some cases. The therapy was found to reduce excess thickness of the macula by an average of 43 percent.

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JCI table of contents, 16 February 2004

The calcium-sensing receptor plays a crucial role in regulating mammary gland function, influencing milk production and composition. This study demonstrates that the receptor helps match milk production with available calcium levels in the mother's body.

How much is too much VEGF?

Researchers at Stanford University found that microenvironmental VEGF concentration determines the threshold between normal and aberrant blood vessel growth. Long-term continuous delivery of VEGF maintains below this threshold promotes normal angiogenesis, guiding therapeutic strategies.

Study demonstrates altered angiogenic proteins in preeclampsia patients

Researchers have identified elevated levels of soluble fms-like tyrosine kinase 1 (sFlt1) in pregnant women at risk of developing preeclampsia. This finding suggests that sFlt1 may serve as a biomarker for early detection and potentially inform treatment strategies through the administration of drug therapies that neutralize its effects.

A new direction for psoriasis research?

Researchers found a correlation between genetic variations in the VEGF gene and psoriasis susceptibility. This discovery may lead to targeted therapies blocking the activity of VEGF, which could provide relief for patients.

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Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

JCI Table of Contents

Researchers have identified c-myc as a key regulator of hormone-dependent prostate cancer cell growth, potentially leading to new treatment targets. Meanwhile, a novel approach using regulatory T cells has shown promise in controlling graft-versus-host disease, while a study on mast cells reveals their role in allergic diarrhea and pot...

Injection prevents blinding blood vessel growth in mice

Researchers developed VEGF-TRAP, an injection that prevents new blood vessel growth in the eyes of mice. The treatment halted existing vessel leakage and showed long-lasting effects without complications. It may offer a potential treatment for diabetic retinopathy and macular degeneration.

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Schepens Eye Research Institute scientists at ARVO

Schepens Eye Research Institute scientists have discovered a new drug that can trap abnormal growth factors in the cornea, potentially improving corneal transplants. Additionally, a gene therapy approach has shown promise in preventing and treating autoimmune diseases like uveitis by inducing a protein called a-MSH.

Arthritis drug suppresses cancer development by stopping action of key protein

Researchers found that celecoxib capsules stop the Sp1 transcription factor from activating genes associated with cancer growth. This led to reduced production of VEGF, a key angiogenic factor that feeds tumors. The study provides a novel molecular mechanism for celecoxib's antitumor activity and may lead to tailored treatment options.

VEGF gene transfer fails to help peripheral arterial disease patients

A clinical trial using VEGF gene transfer found no significant improvement in walking ability for patients with peripheral arterial disease (PAD). Researchers are exploring alternative approaches, including transcription factor-based therapies and cell therapy, to address the condition.

Other highlights of the March 19 JNCI

Research on STI571 and paclitaxel shows potential in controlling prostate cancer metastasis to bone. Lung cancer risk varies widely among smokers, with accurate prediction models helping individuals decide on screening. Non-BRCA mutations may be linked to high breast cancer risk in younger women.

The elusive preeclampsia factor discovered?

Scientists found that elevated levels of sFlt1 protein mediate the progression to preeclampsia by reducing angiogenic factors. Reducing VEGF-A in kidney cells also caused similar kidney disease, suggesting a plausible scenario for preeclampsia

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BIDMC researchers identify source of preeclampsia

Researchers identified sFlt1 as the root cause of preeclampsia, a condition characterized by high blood pressure and organ damage. The study's findings hold promise for developing diagnostic tools and therapies for this deadly condition.

Researcher explores tumors' survival strategy

A researcher is studying how tumors pirate angiogenesis, the formation of new blood vessels, to survive. Dr. Motamed focuses on protein SPARC, which regulates growth factors and has multiple roles in cancer and new blood vessel formation.

Gene that helps blood vessels form linked to complex birth defect

A gene involved in forming blood vessels has been identified as a key player in DiGeorge syndrome, a chromosomal abnormality causing devastating birth defects. The study found that abnormalities in VEGF lead to the syndrome, which affects the heart, thymus, parathyroid gland, and mental retardation.

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Bone marrow cell transplant treats clogged leg arteries

Researchers found that bone marrow cell transplantation significantly increased new capillary formation and improved blood flow in patients with PAD. The study's findings suggest that this therapy may help alleviate symptoms of PAD, including pain, fatigue, and ischemic ulcers, by promoting angiogenesis.

Branching out: New insight into vessel branching during development

Researchers investigated the physiological roles of VEGF isoforms in embryonic vascular development, finding that different isoforms have distinct functions and are necessary for normal vessel branching frequency and width. The study uses transgenic mice to explore the role of soluble and heparin-binding VEGF isoforms in vessel growth.

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American Thoracic Society news tips for June (second issue)

Researchers found that inhaled corticosteroids significantly improved disease symptoms and reduced patient exacerbations in a double-blind study of COPD patients. However, ICS treatment had no effect on major inflammatory cell types or lung function in this advanced COPD population.

'Trojan horse' technology destroys blood supply to cancer tumors in mice

Researchers have developed a new technique using the vascular endothelial growth factor (VEGF) as a carrier to deliver a toxic agent selectively to tumor blood vessels. This approach has shown impressive anti-tumor effects in mice with human melanoma and prostate cancer, reducing tumor growth by up to 16 percent.

Experiments reveal ancient blood flow map

Researchers discovered the ancestral role of VEGF protein guiding developing blood cells to their destinations. The findings suggest that blood vessels may have evolved from blood cells, a theory supported by studies on fruit fly embryos.

Microtumor-induced vascular development

Glioma cells induce angiogenesis by interacting with host vasculature and sprouting new vessels, defying the cooptation model. Vascular outgrowth occurs as a continuous process of growth and remodeling, starting early in tumor progression.

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Protein could help rejuvenate oxygen-starved cardiac tissue, heal wounds

Researchers genetically engineered mice to overexpress the HIF-1α gene in skin cells, resulting in a 70% increase in capillaries and normal-like blood vessels. The study suggests that HIF-1α harnesses VEGF expression in a way that could be beneficial therapeutically for conditions like ischemic tissue and recalcitrant wounds.

Blood vessels grown in live animals

Researchers at the University of Michigan successfully grew new, mature blood vessels in live animals by implanting scaffolds that delivered critical growth factors. The innovative approach, reported in Nature Biotechnology, has potential medical applications for alternatives to heart bypass surgery and treatments for vascular disease.

Tissue engineering could become new coronary bypass

Researchers at the University of Michigan have developed a new tissue engineering method that uses a polymer to encourage the formation of healthy blood vessels in living rats. The approach, which combines VEGF and PDGF growth factors, shows promise for treating coronary artery disease and speeding up wound healing.

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VEGF gene therapy eases pain, improves heart function

In two studies, VEGF gene therapy significantly reduced angina episodes and improved exercise tolerance in patients with end-stage coronary heart disease. The treatment has shown impressive clinical results, with most patients experiencing continued improvement in daily life after treatment.

Making new veins

Researchers at UCSF have discovered that continuous expression of the HIF-1a gene can induce formation of new blood vessels in mice. This breakthrough has significant therapeutic potential for treating diseases such as diabetes and recalcitrant wounds.