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Research has shown that the growth of cancerous tumours is affected by the transforming growth factor beta (TGF-beta) in the body’s cells; TGF-beta both suppresses and stimulates tumour development, but it has not been understood how this happens. A new study published in the journal Science Signaling today reveals important details behind this process.
Uppsala physicists have in an international collaboration developed a new method for creating laser pulses which are shorter, have much higher intensity and cover the THz frequency range better than current sources. The study is published today in the authoritative journal Nature Photonics and is of great importance to materials research.
Canine Degenerative Myelopathy (DM) is a neurodegenerative disease in dogs with similarities to ALS in humans. Scientists at Uppsala University, SciLifeLab, the Broad Institute of MIT and Harvard, and the University of Missouri, have discovered a modifier gene that affects the risk of developing DM in Pembroke Welsh Corgis. The study is published in PNAS this week.
In just a few decades, the number of overweight and obese adults and children in the world has reached alarming levels, not least in low-income countries. This year, Uppsala Health Summit is taking place in conjunction with World Obesity Day: 11-12 October 2016. International experts on child obesity will gather to discuss countermeasures with industry, policy makers and society.
How species genetically adapt to their environment is a central question related to the evolution of biodiversity. In a new study scientists at Uppsala University and their colleagues report that whole genome sequencing of Atlantic and Baltic herring revealed hundreds of loci underlying adaptation to the brackish Baltic Sea or timing of reproduction. The study is published today in eLife.
Atrial fibrillation increases the risk of stroke. Treatment with oral anticoagulation reduces this risk but instead increases the risk of bleeding. Today, a new blood test based tool enabling better and more individualized stroke prevention treatment is presented at a congress in Chicago, and simultaneously published in the top-ranked medical journal The Lancet.
A difference of one hundredth of a percent in fitness is sufficient to select between winners and losers in evolution. For the first time researchers have quantified the tiny selective forces that shape bacterial genomes. The story is published today in the prestigious journal PLoS Genetics.
For the first time, researchers have succeeded in passing an antibody through the blood-brain barrier to act as a tracer for PET imaging of the brain. This resulted in more precise information being obtained than with regular radioactive tracers. The study provides hope for more effective diagnosis of early onset Alzheimer’s disease and improvements in monitoring the effects of medication.
Individuals subjected to chronic low-dose exposure to organochlorine pesticides show and increased risk to obtain a future diagnosis of cognitive impairment. This is shown in a international study now published in Environmental International.
Sometimes so-called synonymous mutations occur in DNA. These do not lead to a change in the protein sequence but which may still have major negative effects on the ability of bacteria to survive. New research from Uppsala University has now shown that an organism can efficiently compensate for the negative effects. These findings have been published in the journal Molecular Biology and Evolution.
1.Schematic human brain with hippocampus in white. 2.Cross section of hippocampus with pyramidal cells depicted with the major incoming fibres SC (schaffer collaterals, green), TA (temperoammonic pathway, blue), SH (septohippocampal pathway, black) 3.The gatekeeper (red) counteract signaling from TA pathway, thereby allowing local inputs from SC pathway on pyramidal cells to become stronger.