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Science News Archive August 2008


Page 1 of 17

Best use of drug-eluting stents

Drug-eluting stents should be avoided in patients with diabetes, short lesions, or large vessel sizes due to high restenosis risk. Extended dual antiplatelet therapy also poses bleeding complications, making bare metal stents a safer option for some patients

DES: New elements in the debate

Recent studies on DES have shown mixed results, with some suggesting increased risk of late thrombosis but no impact on mortality or myocardial infarction. However, other data indicate benefits in terms of reduced reinterventions and improved outcomes for high-risk patients.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

The TRANSCEND study

The TRANSCEND study found that telmisartan modestly reduced the outcome of cardiovascular death, heart attack, stroke, and hospitalization for heart failure. Additionally, fewer patients receiving telmisartan were hospitalized for any cardiovascular reason compared to placebo.

Researchers locate geographic origins from DNA

A study published in Nature describes the use of DNA analysis to pinpoint the geographic origins of individuals from a sample of Europeans. The research revealed striking genetic maps of Europe, allowing for precise classification of individuals by region.

Who needs surgery?

Recent guidelines reject CABG as initial treatment strategy for most patients with multi-vessel disease, despite evidence suggesting otherwise. A multidisciplinary approach involving a surgeon is recommended to ensure patients receive balanced advice.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

The ECNP consensus statement on bipolar depression

The ECNP consensus statement on bipolar depression highlights the disease's significant impact on functioning, social relationships, and employment. Early onset of bipolar disorder is associated with a severe burden of disease, particularly during acute depressive episodes.

DES in diabetic patients

Diabetic patients face accelerated atherosclerosis, increased risk of restenosis and late mortality when undergoing PCI. DES has been associated with mortality benefit in patients with multivessel disease, but results are mixed for diabetic patients.

The BEAUTIFUL study

The BEAUTIFUL study shows ivabradine significantly reduces hospitalization for fatal and non-fatal myocardial infarction by 36% and coronary revascularisation by 30% in high-heart-rate patients. Ivabradine is safe and well-tolerated, even when used with other cardiovascular drugs.

Genetic testing?

Genetic testing has significantly improved the detection of individuals at risk for sudden cardiac death in athletes. This technology enables informed decision-making regarding care and training continuation among athletes. However, its use in asymptomatic genetic carriers with normal phenotypes is a topic of controversy.

New genes found for inflammatory bowel disease in children

Researchers have discovered two new genes that increase the risk of developing childhood inflammatory bowel disease. The study found a compelling candidate, TNFRSF6B, which is involved in tumor necrosis factor signaling and may provide a target for drug development.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Computed tomography provides anatomy -- we need ischemia!

Cardiac computed tomography (CTA) is reliable for excluding coronary artery disease but lacks hemodynamic relevance and poses radiation risks. Fundamental insights into CAD suggest a graded prognosis according to ischemia severity, making revascularization unnecessary in some cases.

Cardiac imaging in 2020

Recent advancements in cardiac imaging have led to the detection of impairments in cellular processes that precede changes in morphology and function. These early stages can be identified through various imaging techniques such as PET, nuclear imaging, MRI, ultrasound, and optical imaging.

Cardiac ultrasound imaging goes to handheld

The introduction of handheld echocardiography machines promises to revolutionize cardiac diagnosis and treatment. These portable devices will enable doctors to quickly assess heart valves and pumping power, potentially saving lives in emergency situations.

The future of non-invasive cardiac imaging

The field of non-invasive cardiac imaging has evolved significantly, with various techniques such as echocardiography, cardiovascular magnetic resonance, and computed tomography available. However, clinicians face challenges in choosing the most suitable modality due to a plethora of options.

Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

LEADERS (Limus Eluted from A Durable versus ERodable Stent coating)

The LEADERS study found that a biolimus-eluting stent with a biodegradable polymer is as safe and effective as a sirolimus-eluting stent with a durable polymer, reducing the risk of restenosis. The results suggest that this new generation of drug-eluting stents may offer improved long-term safety and effectiveness.

Sex hormones link to heart risk

A new study led by the University of Leicester found that men's sex hormones, particularly estradiol and estrone, are associated with increased cardiovascular risk factors such as high total cholesterol and LDL-cholesterol. This suggests that natural endogenous estrogens may play a role in increasing heart disease risk in men.

Neurogenesis in the adult brain: The association with stress and depression

The adult brain's capacity for neurogenesis is closely tied to stress and depression, with research showing that chronic stress can inhibit new cell growth in the hippocampus. However, antidepressant treatment has been shown to stimulate neurogenesis, suggesting a potential therapeutic target for treating major depressive disorders.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Landmark study opens door to new cancer, aging treatments

Researchers at The Wistar Institute have deciphered the structure of telomerase, an enzyme playing a major role in nearly all human cancers. This achievement paves the way for new cancer treatments and anti-aging therapies by understanding how to deactivate telomerase.

Positive exercise testing in athletes: What does that mean?

A positive exercise test indicates an increased risk of cardiac events, especially in athletes with underlying coronary artery disease. The test is crucial for evaluating high-risk athletes over 35 years old and those with known cardiac abnormalities.

Garmin GPSMAP 67i with inReach

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

New sensory devices will aid Parkinson's and stroke patients

Researchers at Queen's University Belfast are developing new sensory devices to help people with Parkinson's disease and stroke patients control their movements. The devices will provide sensory information through eyes, ears, or touch, allowing the brain to learn to guide movements in a more controlled way.

Ice Age lesson predicts a faster rise in sea level

Researchers estimate global sea level rise could be double or triple current predictions over the next century, with possible rises of up to a third of an inch per year. The study uses lessons learned from the demise of the last great North American ice sheet to inform its findings.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

Antidepressants in suicide prevention

Recent reports suggest antidepressants might exacerbate suicidal tendencies, leading to increased scrutiny of their efficacy. Studies show that depression is a significant risk factor for suicide, with over 60% of completed suicides linked to mood disorders.

Engineers create bone that blends into tendons

Researchers at Georgia Institute of Technology successfully created artificial bones with a graded interface, allowing them to blend seamlessly into surrounding tissues like tendons. This breakthrough technology has the potential to improve outcomes in ACL surgery and other applications where tissue integration is critical.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Diversity among parasitic wasps is even greater than suspected

Researchers have discovered that the diversity of parasitic wasps is even higher than initially suspected, with 313 provisional species identified through a combination of ecological and genetic data. The new analysis sheds light on a group of insects that are already known for their staggering diversity, with estimates suggesting that...

Sex differences seen in response to common antidepressant

A new study has found that women are 33 percent more likely to achieve full remission of their depression symptoms with the commonly used antidepressant citalopram compared to men. The study, which involved over 2,800 participants, controlled for various factors and suggests a biological basis for the difference in response.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

New research finds chewing gum may help reduce stress

A study found that chewing gum helped relieve anxiety, improve alertness, and reduce stress among participants in a laboratory setting. The use of chewing gum was associated with higher alertness, reduced anxiety and stress, and improvement in overall performance on multi-tasking activities.

Researchers devise means to create blood by identifying earliest stem cells

Scientists discovered the earliest form of human blood stem cells, called hemangioblasts, which can be replicated in unlimited supply using ACE as a marker. This breakthrough could lead to new treatments for heart diseases, anemias, leukemia and autoimmune diseases by mass-producing progenitor blood cells.

Growth factor predicts poor outcome in breast cancer

Researchers found that IGF-I stimulates aggressive tumor growth and DNA repair regulation, leading to poor outcomes. The study identifies a gene signature linked to patient responses to breast cancer treatments, offering potential biomarkers for targeted therapies.

Flu shot does not reduce risk of death

Researchers analyzed data from over 700 elderly patients and found no significant reduction in all-cause mortality among those vaccinated against flu. Despite initial reports of a large mortality benefit, the study controlled for various variables and concluded that any potential benefit was small and statistically non-significant.

Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.

The challenge of paying for quality nursing care

This special issue of Policy, Politics & Nursing Practice examines the economic value of nursing care and its impact on patient outcomes. The research reveals that improving work environment changes or staffing levels can lead to cost savings through increased nurse satisfaction and improved patient outcomes.

Heavy breathing -- an obscure link in asthma and obesity

A recent New Zealand study investigated the relationship between obesity and asthma, ruling out systemic inflammation as a common factor. Despite not finding evidence of its involvement, researchers suggest that other possibilities, such as changes in innate immunity or dynamic lung function, may be worth exploring.

Apple iPad Pro 11-inch (M4)

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

Physical and sexual abuse linked to asthma in Puerto Rican kids

A recent study found that children who experienced physical or sexual abuse were more than twice as likely to have asthma. The researchers also discovered an association between stress, violence, and decreased glucocorticoid response, leading to airway inflammatory responses.

Key discovered to cold tolerance in corn

Researchers have discovered a key to cold tolerance in corn, allowing it to thrive in colder regions. By increasing PPDK enzyme production during cold weather, corn yields can be extended and growth seasons lengthened.

Smoking during pregnancy a 'double-edged sword' in SIDS

Research found that babies born to smoking mothers had impaired respiratory function and took longer to recover from oxygen interruptions, increasing their SIDS risk. The study suggests that cigarette smoke exposure may affect brain development and lead to developmental disorders.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Caltech scientists discover why flies are so hard to swat

Researchers use high-speed imaging to study fruit fly evasive maneuvers, finding that the fly's tiny brain calculates threat location and places legs in optimal position within 100 milliseconds. The team also identifies an optimal method for swatting flies by aiming forward of their starting position.

Antarctic research helps shed light on climate change on Mars

Researchers found that Martian gullies resemble those in Antarctica's McMurdo Dry Valleys, formed as recently as a few hundred thousand years ago. The study suggests changes in snow accumulation and glaciation are linked to Mars' spin obliquity, indicating dynamic climate change on the planet.

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Clearing the airways in cystic fibrosis

Researchers discovered a way to restore function of CF airway cells by manipulating cellular quality control machinery. This technique could significantly reduce sticky mucus that clogs lungs and leads to life-threatening infections.