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Tag: "particles" at medical news

A new century of Alzheimer's disease research

...2 is highly prone to forming deposits. Synthesized particles of AB42 will fuse to each other within hours in an animal’s brain, but weeks are required for AB40 to adhere. More recent research has shown that the AB42 protein folds in such a way that it creates a pleated-sheet-like “template” that acts to chemic...

New Oncogene for Brain Cancer

...erest and injected into the mouse brain. The viral particles infect only glial cells, where the genes are expressed. This system allows the researchers to observe whether a gene identified in a correlation study plays an active role in tumorigenesis. It also permits the delivery and study of combinations of ...

Prions Capacity can Be Aggrevated by Solid Particles

... their infectious nature when bound to common soil particles . Writing in the journal Public Library of Scien...eam is exploring several hypotheses: that the soil particles might somehow protect the prion from degradation in the digestive system, that prions bound to clay ...

Invisible Gases Form Most Organic Haze in Urban, Rural Areas: Study

...elieved that sources that spew soot and other tiny particles directly into the air were the primary culprit in the formation of organic haze. But the new study by researchers Qi Zhang and Jose-Luis Jimenez show aerosols formed chemically in the air account for about two-thirds of the total organic haze in u...

Air Pollution in India Causes 527,700 Deaths a Year

...e, particulate matter-a mixture of extremely small particles and water droplets-ozone, and nitrogen dioxide. China accounts for roughly one-third of the global total for these pollutants, according to Krzyzanowski. (See a map of China.) The combustion of fossil fuels-whether to power China's many automobile...

New Nano-power Could Make Biopsies Sensitive and Efficient

...lls. When injected into the body, thousands of the particles fix to cancer cells, turning them into miniature magnets. The cells can then be drawn towards magnets encased in the tip of a biopsy needle. A mathematical model of the system confirmed that considerable numbers of cancer cells, loaded with nanopar...

Now, a Tattoo That can Be Easily Removed

...he new method is called micro-encapsulation, where particles are suspended in a biodegradable polymer coating. The microcapsules, that are as tiny as pins, can bear a molecule that requires protection or restrained release. The process is widely used in manufacturing plant food, stain remover, and even scra...

High Nonfasting Triglyceride Levels Linked With Cardiovascular Risks

..., which could exclude certain types of lipoprotein particles (remnant lipoproteins), a possible risk factor for atherosclerosis, according to background information in the article. However, except for the first hours in the early morning, most individuals are in the nonfasting state most of the time. Ath...

Alzheimers Disease Enzyme may Interfere With Brain Function

...electrochemical signal by admitting charged sodium particles into the cells interior. Sodium channels consist of an alpha subunit, which makes up the body of the channel, and one or two beta subunits that help to regulate the channels activity. Previous studies from Kovacs team and others showed that the BAC...

Two MSU Professors Spearhead International Water Project

...es selectively remove things such as chemicals and particles from water, said Voice, professor of civil and environmental engineering. They are analogous to filters except they remove things that are smaller and separate on the basis of chemistry and size. Our project is looking at developing new types of memb...

Adherence of Nanoparticles to RBC- Very Effective Drug Delivery Method

...irculation when attached to red blood cells. The particles eventually detach from the blood cells due to shea... blood cells to extend the circulation time of the particles avoids the need to modify the surface chemistry of the entire particle, which offers the potential t...

Theory of How HIV Attacks is Wrong: Study

...ff -- by causing infected T cells to produce virus particles before dying. This ongoing cycle of infection, HIV production, reinfection and cell destruction has been called the "runaway" hypothesis. But if this were so, the T cells would be killed off far too quickly, the researchers found. Using a simpl...

Fine Particulate Matter from Traffic may Reduce Unborn Babies Birth Weight

...ate matter is considered to be an indicator of the particles originating from traffic, and in particular from diesel vehicles. Earlier American Studies had already suggested that fine particulate matter might influence the birth weight. But this is the first study to suggest so clearly that traffic-related a...

Angioplasty may Damage Kidneys

...kidney arteries can also release thousands of tiny particles into the bloodstream that can impair kidney functi...searchers have suspected that angioplasty releases particles into the bloodstream presumably made up of bits of clot and fatty plaque material from the blockage...

Taj Mahal is Enveloped by Pollution and a Foul Smell

...ee on Transport, Tourism and Culture said airborne particles were being deposited on the monument's white marble surface, giving it a yellow tinge. (ANI)...

Allergic Individuals Should Keep Away from Cats, Say UK Scientists

...et older. Cat allergen is present on very small particles that readily become airborne when disturbed and are easily inhaled. When a person experiences an allergic response, a chemical called human immunoglobulin, or IgE, produced by the immune system in response to the presence of allergens such as cat h...

New Cancer Therapy That can Be Less Painful

...ss. They have used nanotechnology to create tiny particles which specifically attack cancer cells, but leave healthy tissue unaffected. The particles - or mini-cells - are tagged with anti-cancer antibodies so they zero in on their target. Traditio...

Children Using Slide in Playground Treated for Exposure to Poisoning

...arned. Soil often is contaminated by airborne lead particles that drop to the ground and become "a persistent, hard to remove component of the dust matrix." Playground equipment is another possible source of lead contamination, a study by the Consumer Product Safety Commission (CPSC) revealed. Factoring in...

AIDS Vaccine Still a Long Way Off

... to a successful vaccine. The DNA sequences of HIV particles in a single person can be as diverse as those of all the influenza viruses in the world. A vaccine that produces an immune response against one HIV sequence may have no effect on other strains. Various attempts are made, like the current trials, bu...

New Electro-chemical Biosensor to Check Food Contamination

... Once the antibodies hook onto the contaminating particles they are attracted to the surface of a transductor, which converts the contact with the antibodies into electrical signals. By measuring these electric signals the device can determine the concentration of contaminants in the sample. The sensor wil...

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