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Science News Archive 2008


Page 73 of 240

Estrogen reduces risk of fracture after menopause

A study found that estrogen therapy reduced the risk of fractures after menopause, particularly in women aged 50-64 years. The use of post-menopausal hormone replacement therapy increased greatly during this period and was estimated to cause nearly half of the decline in fracture rates among women.

CSHL team traces extensive networks regulating alternative RNA splicing

Scientists have identified intricate biochemical networks involving a class of proteins that enable genes to express themselves in specific tissues. The discovery sheds light on gene regulation and its relevance to human diseases, including developmental illnesses such as autism and heart disease.

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What induce local recurrence of rectal carcinoma?

Researchers found that family history, high CEA levels, cancerous perforation, tumor differentiation, and vessel cancerous emboli are significant risk factors for local recurrence. Patients with positive circumferential resection margins had a higher rate of local recurrence compared to those with negative margins.

Apple iPhone 17 Pro

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Fires regenerate African grassland

Research in Etosha National Park found periodic fires play a key role in regeneration, breaking up the old grass layer to create opportunities for regrowth. This discovery is significant for managing semi-arid nature reserves where fires are essential for renewing the grass canopy.

The effective chemoradiotherapy method for pancreatic cancer

Researchers found that a twice-weekly gemcitabine infusion schedule improved median survival time, disease-free survival time, and overall 1-year survival rate compared to previous studies. The study also showed that patients with reduced tumor markers had better prognosis.

How to prevent halothane hepatitis in Iran?

A recent study on halothane hepatitis in Iran found that a large percentage of cases could have been avoided by following strict guidelines. The researchers suggested avoiding halothane use in female patients with a history of surgery or delivery under general anesthesia to reduce the risk of HH.

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How to treat steroid-naive ulcerative colits patients efficiently?

Researchers found 61.1% of steroid-naive UC patients entered remission after leukocytapheresis sessions, suggesting its efficacy as a second-line treatment. Endoscopic findings can predict the treatment's success, making LCAP a suitable option for moderately active UC patients.

Out of joint

Researchers at Tel Aviv University and New York University have developed a non-invasive MRI technique that detects the earliest signs of osteoarthritis, enabling early diagnosis and treatment. The test is cost-effective and can provide results within one day.

Global food situation at a crossroads

A recent report by the Food and Agriculture Organization of the United Nations highlights that higher food prices are partly to blame for the number of hungry people growing, with around 925 million worldwide. To address this, a second Green Revolution is needed to expand productivity sustainably while preserving natural resources.

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Monitoring exhaled nitric oxide does not help manage asthma

A new study found that measuring exhaled nitric oxide in adolescents with asthma did not improve disease control. Despite initial improvements, participants who received treatment with exhaled NO monitoring had similar asthma symptoms and exacerbations as those without

A new combined treatment of biliary cast syndrome

A new study combines endoscopic treatment with ursodeoxycholic acid to effectively treat non-transplant patients with biliary cast syndrome. The approach led to normalization of liver function tests and improved symptoms in a 76-year-old diabetic patient.

Aranet4 Home CO2 Monitor

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hefA plays an important role in multidrug resistance of Helicobacter pylori

A study published in World Journal of Gastroenterology found that HeF A expression levels are significantly higher in multidrug-resistant strains of H. pylori compared to their susceptible counterparts. The HeF A mutant was more susceptible to four out of ten antibiotics, confirming its role in multidrug resistance.

Political attitudes are predicted by physiological traits

Researchers found that individuals with lower physical sensitivities to sudden noises and threatening images tend to support liberal policies, while those with higher physiological reactions favor conservative policies. This discovery may help explain the stability of strong convictions and the prevalence of political conflict.

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Virtual colonoscopy as good as other colon cancer screening methods

A nationwide study confirms virtual colonoscopy's accuracy in detecting colorectal cancers and pre-cancerous polyps as high as traditional colonoscopy. This minimally invasive procedure has been endorsed by the American Cancer Society, offering a safe and non-invasive screening option for millions of Americans.

Asthma: still more questions than answers

Research has identified distinct pathogenic phenotypes, or endotypes, of asthma that can lead to improved classification and targeted treatment efforts. Additionally, studies have shown associations between paracetamol use in infancy, gene-environment interactions, and the risk of developing inflammatory airway disease.

Prestigious nuclear medicine publication offers open online access

The Journal of Nuclear Medicine is now free and open to the public six months after publication, accelerating access to new research and advancing understanding of nuclear medicine and molecular imaging. This move reflects the journal's exceptional quality and influence as an academic and professional resource.

Creality K1 Max 3D Printer

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Iowa State study finds mom's beliefs may impact their kids' alcohol use

A new Iowa State University study found that mothers' self-fulfilling effects on their children's alcohol use are rooted in the power of positive thinking and self-verification theory. The research suggests that if moms help their teens develop a positive self-view, it can limit their chances of using alcohol.

JCI table of contents: Sept. 18, 2008

Researchers at Duke University Medical Center found that a maternal diet rich in methyl donors increases the development and severity of asthma in mice. The study also identified specific genes modified by methylation as likely underlying causes of the increased disease severity.

Scientists identify the genes that cause blindness produced by corneal edema

Researchers at the University of Granada have identified the genes responsible for corneal edema-induced blindness. The study revealed that altered ion concentration in endothelial cells leads to barrier dysfunction and oedema. New treatments, including gene therapy, may soon be available to address this condition.

Rhinitis, with or without allergies, is linked to adult-onset asthma

A large prospective study found that rhinitis is a powerful predictor of adult-onset asthma, with non-allergic and allergic rhinitis groups showing significant increased risks. The study suggests that treating allergic rhinitis may reduce the incidence of asthma, but more research is needed to confirm this.

DJI Air 3 (RC-N2)

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Scientists discover cancer-causing role of gene proteins

Researchers at the University of Toronto have discovered that two protein cousins, related to the p53 family, play a critical role in cancer development. The findings challenge traditional thinking and suggest a new branch of scientific inquiry into cancer development.

Breakthrough in spinal injury treatment

Researchers have discovered two types of astrocyte support cells generated from a common stem cell-like precursor cell, one effective at promoting nerve regeneration and the other causing neuropathic pain. The study offers a promising approach to repairing spinal cord injuries without inducing pain syndromes.

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Maternal diet can increase development and severity of asthma in offspring

A study by John Hollingsworth at Duke University Medical Center found that a maternal diet rich in methyl donors can increase the development and severity of asthma in mice offspring. The researchers discovered that genes modified by methylation due to methyl donor exposure were likely responsible for this increased risk.

New study offers solution to global fisheries collapse

A study finds that catch shares can reverse fisheries collapse, with nearly a third of open-access fisheries collapsing compared to half for those managed under catch share systems. Catch shares create incentives to protect fish populations and reduce bycatch, leading to better biological outcomes.

GM crops protect neighbors from pests

A study published in Science reveals that genetically modified cotton (Bt cotton) reduces pest populations not only among the modified crops but also among nearby unmodified crops. This finding could offer promising ideas for controlling pests and maximizing crop yields in the future.

CalDigit TS4 Thunderbolt 4 Dock

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IMPACTS: On the threshold of abrupt climate change

The IMPACTS program aims to understand possible mechanisms of abrupt climate change and build comprehensive computer models. Researchers focus on four types of ACC: marine ice sheet instability, positive feedback mechanisms in subarctic forests, methane hydrates destabilization, and biosphere-atmosphere feedback leading to megadroughts.

Minimally invasive aortic valve bypass benefits high-risk elderly patients

Researchers at the University of Maryland Medical Center developed a minimally invasive procedure to bypass narrowed aortic valves in high-risk elderly patients. The study showed that this procedure can be performed safely without stopping the heart and offers effective treatment for those who were previously considered too frail for s...

Celestron NexStar 8SE Computerized Telescope

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Expanding cell girth indicates seriousness of breast cancer

Researchers have created a rapid cell inspection technique that can identify metastatic breast cancer cells, which have compromised the cell's structure and compromise deformation. The technique uses an electrical field within a microscopic fluid-filled channel and has been shown to expand cells by 75% in metastatic cases.

Some political views may be related to physiology

Researchers at the University of Nebraska-Lincoln found that people who react strongly to threatening visual images and sounds tend to support public policies protecting society over individual privacy. This study controlled for factors like gender, age, and income, suggesting a link between biology and political opinions.

'Estrogen flooding our rivers,' Université de Montréal study

A study by Université de Montréal researchers found that Montreal's water treatment plants dump up to 90 times the critical amount of estrogen products into the river. The presence of these hormones can disrupt the endocrine system of fish and decrease their fertility, threatening aquatic ecosystems.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Comet dust reveals unexpected mixing of solar system

Researchers analyzed oxygen isotope compositions of comet Wild 2's halo crystals, finding signatures similar to asteroids and the sun. This suggests heat-processed particles were transported outward in the young solar system, complicating theories on its early history.

Hormone discovery points to benefits of 'home grown' fat

Researchers have discovered a lipid-based hormone, palmitoleate, that stimulates insulin's effects on muscle and suppresses fat accumulation in the liver. The hormone is produced when the body produces its own 'home grown' fat, defying traditional views that all extra fat is bad.

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