Tag: "attacking" at biology news

APS physics tip sheet #53

...k response to disease and decreased probability of attacking the body's own tissues. The authors drew their conclusions from a model of the dynamics of antibody evolution. Their simulations show that while there are mechanisms that would allow the immune system to develop antibodies that respond faster and mor...

Scavenger cells could be key to treating HIV-related dementia

...n the temporal lobe than other parts of the brain, attacking macrophages migrate there in a constant stream, causing harmful inflammation. Nearly 15 percent of HIV patients develop dementia as their disease progresses. But understanding the routes macrophage cells take in the brain could help researchers find ...

LIAI scientists discover cellular switch for controlling immune system function

...e found that these two very different viruses were attacking the same communication pathway in the immune system." By disrupting that pathway, the viruses were keeping T lymphocytes - which are white blood cells that fight disease - from communicating with other cells in the immune system. "It's kind of like...

Researcher at UGA College of Veterinary Medicine identifies new way of combating viral diseases

...ses from reproducing and infecting othercells. "By attacking host genes we are able to block viral infection in a broadspectrum manner," said Hodge."One gene, Rab9, is required by severalviruses. Therefore, if you shut it off, these several viruses can't grow. Itgets around the problem that you have to shut of...

Epigenetic activity silences Rb2/P130 gene in lung cancer

...r chemical groups attached themselves to the gene, attacking a sequence of the Rb2/p130's DNA and thus causing it to cease functioning. "These studies are providing very important information on how cancerous and pre-cancerous conditions can be detected by the presence of the methylated state of Rb2/p130," s...

New lab research may help those deafened by immune system attack

...ease, destroying invading microbes with a swarm of attacking cells. But it can also go haywire for no apparent reason, ganging up on normal tissues in our body and wreaking havoc. In thousands of people each year, the immune system attacks the inner ear, home to the tiny, delicate structures that allow us to ...

MIT engineers an anti-cancer smart bomb

...animals died at 20. "It's an elegant technique for attacking the two compartments of a tumor, its vascular system and the cancer cells," said Judah Folkman of Children's Hospital Boston. "This is a very neat approach to drug delivery," said MIT Institute Professor Robert Langer. The nanocell worked better aga...

Identification of a protein important for Hepatitis B replication

...nterferon which also suppress viral replication by attacking the virus itself, but the identification of the action of this protein offers new therapeutic opportunities by targeting the human proteins that help the virus to replicate....

Sneaky sex causes fish pest

...squito fish, as females wouldn't think twice about attacking you when you make a pass at them. As they are not...tercourse, females select for strong male genes by attacking those that show them some interest. Therefore, the lucky (it's often the little) one sneaks up from ...

How HIV disables the cells' call for help

...lay host to HIV viruses are overactive, mistakenly attacking the body's cells instead of foreign invaders. If the viruses use FPs to override the cells' call for help, could their actions, which block one type of immune response without killing the cell, be applied to these autoimmune diseases? To check their ...

Gene changes linked to deficient immune suppression in MS

...ve a sub-group of "pathogenic" T-cells cause MS by attacking myelin, the fatty sheath insulating nerve fibers in the brain and spinal cord. As a result, the fibers can't conduct impulses, leading to such chronic neurological symptoms as memory loss, dizziness, fatigue, depression, bladder dysfunction, vision p...

Bioinformatics reveals new gene regulation system

... Gelfand pointed out that many antibiotics work by attacking the process of bacterial DNA replication. So, he said, this work has identified potential targets for designing new antibiotic drugs. But more importantly, the work shows how molecular discoveries of whole regulatory systems can be made through car...

Purdue scientists may have found key to halting spinal cord damage

...aid. "The trouble is that when free radicals start attacking tissue, it happens in a tiny fraction of a second, after which they are gone. But the acrolein that these attacks release survives in our bodies much longer, for several days at least, and its toxicity is well documented." For example, acrolein has l...

Scientists create artificial cricket hairs

...by the beating of a wasp's wings or the jump of an attacking spider. Each of the hairs on a cricket's cerci is ...ectivity help crickets to perceive and escape from attacking predators, such as the wolf spider. Because of their optimised performance, cricket acoustic sensory...

500 million years of errors: Brachiopod shells record shadow of arms race in ancient oceans

... on shellfish. "As predators became specialized in attacking their shell-protected victims, prey groups also diversified and became better armored. Some invertebrates, like sand dollars and many types of clams, invaded soft substrates by burrowing underneath the ocean floor," Kowalewski said. "However, they ma...

Fossils tell the hole story of killer drillers and their prey

...diversified," he said. As predators specialized in attacking their shell-protected victims, prey groups also diversified and became better armored. As a result, the authors hypothesize, interactions between drilling predators and less desirable prey, such as brachiopods, became more frequent or more lethal. "I...

JCI table of contents July 1, 2005

...uency of immune T cells with a higher affinity for attacking an islet antigen, called Kb/IGRP peptide. The researchers investigate how the affinity of the Kb/IGRP-specific T cells increases. They show it is due to an increase in the percentage of islet reacting T cells expressing certain rearrangements that a...

Cure for common cold will need to wiggle to work, scientists say

...us from changing shape at a critical moment." When attacking a cell, the rhinovirus particle undergoes perhaps its most important change in shape after the virus has gained entry into a cell. Once inside its victim, the pentagons open up like the trap door in the fabled Trojan horse, allowing the RNA within th...

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage

...st external agents (helper T cells) or by directly attacking and destroying cells infected by foreign invaders (killer T cells). Gamma-delta T cells migrate from the thymus to epithelial tissues such as skin and the linings of the lung. While their precise role remains poorly understood, they perform vital p...

Quantifying network vulnerability, and the best way to find hidden items

...etwork means that the system could be destroyed by attacking as few as one fourth of the network members. Knowing the relative importance of all the members will allow you to destroy a network by taking out about 7% of the nodes. It should come as no surprise that crime rings and terrorist networks go to great...

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(Date:10/31/2014)... 2014  HITLAB SM , a healthcare innovation ... inaugural HITLAB Innovators Summit SM on December ... will partner with the Clinton Foundation,s Health Matters ... Columbia Business School Alumni Club of ... and Operations Research, bringing together leaders in healthcare ...
(Date:10/30/2014)... animals begin life, cells immediately begin accepting assignments to ... mammals, including humans, are special. The cells of mammalian ... to become the protective placenta or to commit to ... step that research from Michigan State University has revealed ... of PLOS Genetics , provide insights ...
(Date:10/30/2014)... in the gastrointestinal tract fulfill many vital functions ... bacteria can induce strong inflammatory responses by the ... enter the bloodstream. , Although acute inflammation is ... or systemic inflammation is linked to numerous disorders ... of inflammatory processes in the development of psychiatric ...
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