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Actualizado: hace 19 horas 37 mins

Marijuana use might lead to higher risk of stroke, World Stroke Congress to be told

Jue, 10/18/2018 - 22:00
A five-year study of hospital statistics from the United States shows that the incidence of stroke has risen steadily among marijuana users even though the overall rate of stroke remained constant over the same period.

Huge variations between countries in time for reimbursement decisions on new cancer drugs

Jue, 10/18/2018 - 22:00
Some European countries take more than twice as long as others to reach health technology assessment (HTA) decisions to reimburse new cancer drugs following their approval by the European Medicines Agency (EMA). The average decision time is longer than one year in some countries, according to a study to be reported at ESMO 2018 Congress.

Why some cancers affect only young women

Jue, 10/18/2018 - 22:00
Among several forms of pancreatic cancer, one of them affects specifically women, often young, even though the pancreas is an organ with little exposure to sex hormones. This pancreatic cancer, known as 'mucinous cyst,' has strange similarities with another mucinous cancer, affecting the ovaries. By conducting large-scale analyses of genomic data, researchers at the University of Geneva and at the University Hospitals of Geneva have provided an answer: both tumors originate from embryonic germ cells.

Scientists find brain signal that might help us judge the holiday buffet

Jue, 10/18/2018 - 22:00
Neuroscientists have found a brain region that appears to be strongly connected to food preference decisions, like what to choose from a buffet line or potluck table.

Src regulates mTOR, a major player in cancer growth

Jue, 10/18/2018 - 22:00
This study shows that Src is necessary and sufficient to activate mTORC1 and offers the possibility to develop novel approaches to control cancer growth.

En route to custom-designed natural products

Jue, 10/18/2018 - 22:00
Microorganisms often assemble natural products similar to industrial assembly lines. Certain enzymes, non-ribosomal peptide synthetases (NRPS) play a key role in this process. Biotechnologists at Goethe University have now been able to discover how these enzymes interact with each other. This brings them one step closer to their goal of engineering the production of such peptide natural products.

Length of breathing disruption in OSA may be better predictor of mortality risk

Jue, 10/18/2018 - 22:00
How long a person with obstructive sleep apnea (OSA) stops breathing may be a better predictor of mortality risk from OSA than the number of times they stop breathing, according to new research published online in the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine.

How schools can optimise support for children with ADHD

Jue, 10/18/2018 - 22:00
New research gives the clearest guidance yet on how schools can best support children with ADHD to improve symptoms and maximise their academic outcomes.

1 in 4 @JUULvapor tweeps is underage, a #PublicHealth concern

Jue, 10/18/2018 - 22:00
E-cigarette brand JUUL's Twitter handle is attracting adolescents to the point that at least a quarter of its followers appear to be under age 18. Many of these minors -- to whom it is illegal to sell nicotine-delivery products -- are retweeting JUUL's messages, amplifying its advertisements.

Pediatric advance care planning linked to better understanding of child's end-of-life care choices

Jue, 10/18/2018 - 22:00
The more that families understand the end-of-life treatment preferences expressed by adolescents living with human immunodeficiency virus (HIV), the less likely these youth are to suffer HIV-related symptoms compared with youths whose families do not understand their end-of-life care goals, according to a single-blinded, randomized study published online Oct. 19, 2018, in Pediatrics.

Does herpes cause Alzheimer's?

Jue, 10/18/2018 - 22:00
Herpes is the dreaded 'gift that keeps on giving'. But could it also be taking our memories? Decades of research show a striking correlation between Alzheimer's disease risk and infection with Herpes Simplex Virus 1 (HSV1) in people carrying a specific gene. Now, newly-available epidemiological data provide a causal link between HSV1 infection and senile dementia -- raising the tantalizing prospect of a simple, effective preventive treatment for one of humanity's costliest disorders.

Tough laws prevent gun deaths

Mié, 10/17/2018 - 22:00
A major global report confirms gun-related homicides, suicides and accidents are falling in Australia after the introduction of anti-gun laws, and that the effect of such tough laws is similar elsewhere.

Genetic behavior reveals cause of death in poplars essential to ecosystems, industry

Mié, 10/17/2018 - 22:00
Scientists studying a valuable, but vulnerable, species of poplar have identified the genetic mechanism responsible for the species' inability to resist a pervasive and deadly disease. Their finding, published in the Proceedings of the National Academy of Sciences, could lead to more successful hybrid poplar varieties for increased biofuels and forestry production and protect native trees against infection.

Eating leafy greens could help prevent macular degeneration

Mié, 10/17/2018 - 22:00
A new study has shown that eating vegetable nitrates, found mainly in green leafy vegetables and beetroot, could help reduce your risk of developing early-stage age-related macular degeneration (AMD).

With a microbe-produced toxin, bacteria prove old dogs can learn new tricks

Mié, 10/17/2018 - 22:00
In the ongoing chemical battles among bacteria and their microbial neighbors, a new toxin has been uncovered. This unfamiliar toxin behaves in a familiar way. Its actions against other bacteria resemble the mechanisms of cholera, pertussis and diphtheria toxins. Some bacteria deploying this toxin have safeguards against self-poisoning.

$5.1 million grant will fund research to develop a stem cell-based therapy for blinding eye condition

Mié, 10/17/2018 - 22:00
Scientists at the UCLA Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research and the Stein Eye Institute have been awarded a $5.1 million grant from the California Institute for Regenerative Medicine to advance the development of a novel therapy for blinding retinal conditions.

New fly species found in Indiana may indicate changing climate, says IUPUI researcher

Mié, 10/17/2018 - 22:00
A new type of blow fly spotted in Indiana points to shifting species populations due to climate change. Researchers at IUPUI have observed the first evidence of Lucilia cuprina in Indiana, an insect previously known to populate southern states from Virginia to California.

Suicide risk in abused teen girls linked to mother-daughter conflict

Mié, 10/17/2018 - 22:00
University of Rochester researchers identified a stark correlation between both poor mother-daughter relationships and high degrees of conflict -- with the likelihood of suicidal thoughts.

Cytokine mediates obesity-related factors linked to colorectal cancer

Mié, 10/17/2018 - 22:00
A new study describes the mechanistic relationship between the cytokine interleukin-1ß, (IL-1ß) and obesity, showing that when IL-1ß levels are increased in obesity, IL-1 receptor signaling activates multiple pathways leading to colon cancer.

For preterm infants, skin-to-skin contact affects

Mié, 10/17/2018 - 22:00
For premature infants in the neonatal intensive care unit (NICU), skin-to-skin contact with parents influences levels of hormones related to mother-infant attachment (oxytocin) and stress (cortisol) -- and may increase parents' level of engagement with their infants, reports a study in Advances in Neonatal Care, official journal of the National Association of Neonatal Nurses. The journal is published in the Lippincott portfolio by Wolters Kluwer.

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