الأربعاء، 20 فبراير 2013

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News

Newt transcriptome offers insight into tissue regeneration

Posted: 19 Feb 2013 05:15 PM PST

Scientists have identified protein families expressed during tissue regeneration in newts, providing the groundwork for research into whether particular sets of genes are used for the purpose.

Genetic variation controls predation: Benefits of being a mosaic

Posted: 19 Feb 2013 05:15 PM PST

A genetically mosaic Eucalyptus tree is able to control which leaves are saved from predation because of alterations in its genes, finds a new study. Between two leaves of the same tree there can be many genetic differences – this study found ten SNP, including ones in genes that regulate terpene production, which influence whether or not a leaf is edible

Exposure to air pollution is associated with increased deaths after heart attacks

Posted: 19 Feb 2013 05:15 PM PST

Air pollution contributes to an increased number of deaths among patients who have been admitted to hospital with heart attacks, according to a new study.

It's not just amyloid: White matter hyperintensities and Alzheimer's disease

Posted: 19 Feb 2013 02:22 PM PST

New findings suggest that along with amyloid deposits, white matter hyperintensities may be a second necessary factor for the development of Alzheimer's disease.

Common IV fluid associated with reduced likelihood of full recovery in patients with cardiac arrest

Posted: 19 Feb 2013 02:22 PM PST

Although an intravenous fluid that paramedics in Japan often give to patients in cardiac arrest before they reach hospital may help restore circulation, it may also be linked to reduced survival with minimal neurological or physical damage one month later, according to a new study.

Biological marker predicts susceptibility to common cold

Posted: 19 Feb 2013 02:21 PM PST

Researchers have identified a biological marker in the immune system that -- beginning at about age 22 -- predicts our ability to fight off the common cold. The study found that the length of telomeres -- protective cap-like protein complexes at the ends of chromosomes -- predicts resistance to upper respiratory infections in young and midlife adults.

New approach alters malaria maps

Posted: 19 Feb 2013 01:12 PM PST

Identifying areas of malarial infection risk depends more on daily temperature variation than on the average monthly temperatures, according to researchers, who believe that their results may also apply to environmentally temperature-dependent organisms other than the malaria parasite.

Engineering control theory helps create dynamic brain models

Posted: 19 Feb 2013 01:12 PM PST

Models of the human brain, patterned on engineering control theory, may some day help researchers control such neurological diseases as epilepsy, Parkinson's and migraines, according to a researcher who is using mathematical models of neuron networks from which more complex brain models emerge.

Tool for reading the minds of mice developed

Posted: 19 Feb 2013 01:12 PM PST

Scientists have developed a system for observing real-time brain activity in a live mouse. The device could prove useful in studying new treatments for neurodegenerative diseases, such as Alzheimer's.

New compound holds high promise in battling kidney cancer

Posted: 19 Feb 2013 01:12 PM PST

Chemists have developed a compound that holds much promise in the laboratory in fighting renal (kidney) cancer. Named TIR-199, the compound targets the "proteasome," a cellular complex in kidney cancer cells, similar to the way the drug bortezomib, approved by the Food and Drug Administration, targets the proteasome in multiple myeloma cells, a cancer coming from bone marrow.

Potential epigenetic mechanisms for improved cancer therapy

Posted: 19 Feb 2013 11:07 AM PST

A review article proposes a new epigenetic hypothesis linked to tumor production and novel ideas about what causes progenitor cells to develop into cancer cells.

Diet of resistant starch helps the body resist colorectal cancer

Posted: 19 Feb 2013 11:07 AM PST

New research shows that resistant starch helps the body resist colorectal cancer through mechanisms including killing pre-cancerous cells and reducing inflammation that can otherwise promote cancer.

New drug combination could prevent head and neck cancer in high-risk patients

Posted: 19 Feb 2013 11:02 AM PST

A new drug combination shows promise in reducing the risk for patients with advanced oral precancerous lesions to develop squamous cell carcinoma of the head and neck.

Synaptic molecule works differently than thought; may mean new targets for Alzheimer's

Posted: 19 Feb 2013 11:02 AM PST

Researchers have upended a long-held view about the basic functioning of a key receptor molecule involved in signaling between neurons, and describe how a compound linked to Alzheimer's disease impacts that receptor and weakens synaptic connections between brain cells.

In fight against cancer, a closer look at nuclear blebbing

Posted: 19 Feb 2013 09:16 AM PST

Misshapen cell nuclei are frequently observed in the cells of people with cancer and other diseases, but what causes the abnormality -- and why it is associated with certain disorders -- has remained unclear. Researchers have now developed a mathematical model that clarifies the mechanisms that cause bulges known as "blebs" in cells' nuclear membranes. The work could be a step toward bleb prevention, which may ultimately provide potential therapies for related diseases.

New evidence for link between depression and heart disease

Posted: 19 Feb 2013 09:16 AM PST

Interleukin-6, an inflammatory biomarker associated with cardiovascular disease, is significantly higher in patients with major depression, a study has found.

Variations within influenza strain may explain varying patient response

Posted: 19 Feb 2013 09:15 AM PST

Researchers have found variations within H1N1 patients who were hospitalized during the 2009-10 pandemic and identified those that most impacted patients.

When it comes to genetic code, researchers prove optimum isn't always best

Posted: 19 Feb 2013 09:14 AM PST

Imagine two steel springs identical in look and composition but that perform differently because each was tempered at a different rate. Molecular biologists have shown that concept -- that the speed of creation affects performance -- applies to how a protein they studied impacts an organism's circadian clock function.

Eye movements reveal reading impairments in schizophrenia

Posted: 19 Feb 2013 09:14 AM PST

A study of eye movements in schizophrenia patients provides new evidence of impaired reading fluency in individuals with the mental illness. The findings could open avenues to earlier detection and intervention for people with the illness.

Reduced risk of preterm birth for pregnant women vaccinated during pandemic flu

Posted: 19 Feb 2013 09:13 AM PST

Pregnant women who received the H1N1 influenza vaccine during the 2009 pandemic were less likely to have premature babies, and their babies weighed more on average.

Nicotine lozenges, tobacco-free snuff help smokeless tobacco users quit

Posted: 19 Feb 2013 09:13 AM PST

Smokeless tobacco users who said they didn't want to quit changed their minds or significantly cut back when given nicotine lozenges or tobacco-free snuff in a new study.

Fungi offers new clues in asthma fight

Posted: 19 Feb 2013 09:12 AM PST

Hundreds of tiny fungal particles found in the lungs of asthma sufferers could offer new clues in the development of new treatments.

'Growing' medicines in plants requires new regulations, experts say

Posted: 19 Feb 2013 09:12 AM PST

Scientists say amending an EU directive on GMOs could help stimulate innovation in making vaccines, cheaper pharmaceuticals and organic plastics using plants.

Is there a link between childhood obesity and ADHD, learning disabilities?

Posted: 19 Feb 2013 09:10 AM PST

A new study has established a possible link between high-fat diets and such childhood brain-based conditions as attention deficit hyperactivity disorder (ADHD) and memory-dependent learning disabilities.

Abnormal growth regulation may occur in children with heart defects

Posted: 19 Feb 2013 09:09 AM PST

The poor growth seen in children born with complex heart defects may result from factors beyond deficient nutrition. A new study by pediatric researchers suggests that abnormalities in overall growth regulation play a role.

Steroid injection may lead to worse outcomes in patients with spinal stenosis

Posted: 19 Feb 2013 09:09 AM PST

For patients with spinal stenosis, epidural steroid injections (ESI) may actually lead to worse outcomes—- whether or not the patient later undergoes surgery, according to a new study.

Children with auditory processing disorder may now have more treatment options

Posted: 19 Feb 2013 09:09 AM PST

Researchers are helping children with auditory processing disorder receive better treatment. They have developed a program that uses evidence-based practices and incorporates speech-language pathologists into therapy.

Degenerative cervical spine disease may not progress over time

Posted: 19 Feb 2013 09:09 AM PST

Follow-up data on patients with degenerative disease of the upper (cervical) spinal vertebrae show little or no evidence of worsening degeneration over time, according to a new study.

Effects of human exposure to hormone-disrupting chemicals examined in landmark United Nations report

Posted: 19 Feb 2013 08:55 AM PST

Many synthetic chemicals, untested for their disrupting effects on the hormone system, could have significant health implications according to the State of the Science of Endocrine Disrupting Chemicals, a new report by the United Nations Environment Programme (UNEP) and WHO.

Researchers coat spinal polymer implants with bioactive film to improve bonding with bone

Posted: 19 Feb 2013 07:25 AM PST

Researchers have for the first time successfully coated polymer implants with a bioactive film. The discovery should improve the success rate of such implants -- which are often used in spinal surgeries.

Gene linked to worse outcomes for melanoma

Posted: 19 Feb 2013 07:24 AM PST

Scientists have identified a gene present in some melanoma which appears to make the tumor cells more resistant to treatment.

Silencing of retinoblastoma gene found to regulate differentiation of myeloid cells in cancer

Posted: 19 Feb 2013 07:21 AM PST

Researchers have found a potential mechanism by which immune suppressive myeloid-derived suppressor cells can prevent immune response from developing in cancer. This mechanism includes silencing the tumor suppressor gene retinoblastoma 1 or Rb1. Their data explains a new regulatory mechanism by which myeloid-derived suppressor cells are expanded in cancer.

Novel coronavirus well-adapted to humans, susceptible to immunotherapy

Posted: 19 Feb 2013 06:10 AM PST

The new coronavirus that has emerged in the Middle East is well-adapted to infecting humans but could potentially be treated with immunotherapy, according to a new study.

Discovery of previously unknown immunodeficiency

Posted: 19 Feb 2013 06:06 AM PST

Severe autoimmunity in childhood can be an indication of a primary immunodeficiency (PID) – this has now been demonstrated in a 13-year-old patient. A previously unknown B-cell defect was identified in the teenager with the aid of so-called "next generation sequencing", with which genetic mutations in the genetic material can be detected within a few days.

When selecting a child’s doctor, families prefer grapevine over online ratings

Posted: 18 Feb 2013 10:23 AM PST

Younger parents are more likely to say online scores for physicians are very important, according to a new U.S. national poll.

New advances in the molecular study of diabetes

Posted: 18 Feb 2013 06:25 AM PST

A new study describes for the first time the pharmacological action of thiazolidinediones (TZDs) -- anti-diabetic drugs -- directly on the pancreas, the organ which produces insulin.
مرسلة بواسطة في

ليست هناك تعليقات:

إرسال تعليق

الاشتراك في: تعليقات الرسالة (Atom)