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Tag: "disruption" at biology news

Pesticides choke pathway for nature to produce nitrogen for crops

...ommunications between crops and soil bacteria. The disruption results in lower yields or significantly delayed growth. In a paper appearing online this week ahead of the regular publication by the Proceedings of the National Academy of Sciences (PNAS), the five-member team reports that agrichemicals bind to ...

Treating HIV in war zones -- Public health emergencies need rapid advice from WHO

...rban setting, with the episode of conflict-related disruption occurring early in the programme, and thus similar results in conflict settings may not always be possible. "Nevertheless," they say, "the key elements of contingency planning for care delivery in conflict settings are not resource-intense and we bel...

How the brain's backup system compensates for stroke

...brain region springs into action to compensate for disruption of a primary functional area, as happens during stroke. Their finding offers new insight into how the brains of stroke victims can quickly reorganize to enable the beginning of recovery of movement. Jacinta O'Shea and colleagues at the University of...

DNA repair proteins monitored at double-strand break

...Biology." The findings are important because disruption of the precise movement of these repair proteins c...mplications for these and other diseases linked to disruption of double-strand break repair." The assay, developed by Elijahu Berkovich, Ph.D., in Kastan’s la...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

...ey have learned thus far is that illness and sleep disruption may be a two-way street: sick flies can't sleep, a... The researchers can't say for sure say whether a disruption of the brain's central clock, which is the area of the fly brain that exhibits circadian gene activi...

How badger culling creates conditions for spread of bovine TB

... further support to the contention that the social disruption of badger populations, for example by culling, is likely to promote disease spread." Data for the study came from an undisturbed high-density badger population in the Cotswolds, Gloucestershire, that has been intensively studied by ecologists for ...

Tracing broken wiring in stroke patients

...hers have used a technique to trace the functional disruption in brain circuitry that causes stroke patients to ...resonance imaging (MRI) technique for studying how disruption in brain circuitry produces behavioral symptoms. Maurizio Corbetta and colleagues reported their fi...

Protein sensor for fatty acid buildup in mitochondria

...ctions. Virtually all cells have mitochondria, and disruption of their function can cause a variety of diseases. "Our study showed the connection between the location of PanK2 in the mitochondria and its role in as a sensor of energy demand," said Yong-Mei Zhang, Ph.D., a researcher in the Infectious Diseas...

Penn study on lung-infecting bacterial enzyme suggests new approach to cystic fibrosis treatment

...that is defective in cystic fibrosis patients. The disruption to this protein that conveys ions from lung cells to airways causes thick mucus to buildup inside the lung. The finding suggests a new therapeutic target for treating lung infections in some cystic fibrosis (CF) patients. Lung infection, facilitat...

Ethanol vehicles pose a significant risk to human health, study finds

...missions or greenhouse gases and cause very little disruption to the land-unlike ethanol made from corn or switchgrass, which will require millions of acres of farmland to mass-produce. It would seem prudent, therefore, to address climate, health and energy with technologies that have known benefits. '' ...

DNA analysis reveals rapid population shift among Pleistocene cave bears

...lly distinct cave bear group. The timing of the disruption appears to roughly coincide with the arrival of mo...aves may represent a plausible explanation for the disruption in the cave bear population, creating an opportunity for the infiltration by a neighboring cave bear...

Minuscule molecules pack a powerful punch

...To uncover how miR-155 might cause such widespread disruption of the immune system, the team used genomic studies to identify protein genes whose activity was controlled by miR-155 in T-cells. Activity of more than 150 genes, with a large range of biological functions, was reduced by miR-155, demonstrating its ...

Chronic jet-lag conditions hasten death in aged mice

...s, in rather stark terms, new insight into how the disruption of circadian rhythms can impact well-being and physiology, and how those impacts might change with age. The mouse study is reported by a group led by Gene Block and Alec Davidson of the University of Virginia and appears in the November 7th issue of ...

Tearing down the fungal cell wall

... fungus. In the study, the investigators show that disruption of the AbNPS2 gene drastically impacts the integri... of the spore cell wall. A recently developed gene disruption method was used to generate the fungal mutants (See "New method enables gene disruption in destructi...

How mammals fuel milk production may have implications for cancer

...ey found, mothers deficient for the gene exhibit a disruption of the coordinated metabolic changes that normally occur at the onset of lactation. “The developmental program that prepares the mammary gland for lactation is among the most critical and highly conserved in mammals, as provision of nutritional su...

'Conversation stoppers' fight deadly bacterial infections

...rug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid receptor antagonists has proven beneficial." ...

Nanotechnology propels advances in regenerative medicine research

...rug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid receptor antagonists has proven beneficial." ...

Brown seaweed contains promising fat fighter, weight reducer

...rug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid receptor antagonists has proven beneficial." ...

Study shows enzyme builds neurotransmitters via newly discovered pathway

...rug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid receptor antagonists has proven beneficial." ...

Rising ocean temperatures, pollution have oysters in hot water

...xygen demand. Temperature plus cadmium = power disruption However, there was no difference in oxygen consumption between the two groups acclimated to 28°C. The researchers concluded that the cadmium-exposed oysters in this group needed more oxygen than the unexposed group, but were either unable to obta...

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