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Antibiotics for the Prevention of Malaria

A Plasmodium sporozoite (infectious stage of the malaria parasite transmitted by mosquito bite) entering the first host cell in the human body, i.e. the liver cell. (Credit: Dr. Volker Brinkmann, Max Planck Institute for Infection Biology, Berlin.)

If mice are administered an antibiotic for three days and are simultaneously infected with malaria, no parasites appear in the blood and life-threatening disease is averted. In addition, the animals treated in this manner also develop robust, long-term immunity against subsequent infections.
This discovery was made by the team headed by Dr. [...]

August 15th, 2010 | Posted in Biology News | Read More »

Immune System Overreaction May Enable Recurrent Urinary Tract Infections

The immune system may open the door to recurrent urinary tract infections (UTIs) by overdoing its response to an initial infection, researchers at Washington University School of Medicine in St. Louis have found.
Researchers showed in mice that severe inflammatory responses to an initial UTI cause bladder damage and allow infection to [...]

August 15th, 2010 | Posted in Biology News | Read More »

Dangerous Bacterium Hosts Genetic Remnant of Life’s Distant Past

Within a dangerous stomach bacterium, Yale University researchers have discovered an ancient but functioning genetic remnant from a time before DNA existed, they report in the August 13 issue of the journal Science.
To the surprise of researchers, this RNA complex seems to play a critical role in the ability of the organism [...]

August 15th, 2010 | Posted in Biology News | Read More »

Single Cell Injections

Single Cell Injections

Duke University physicists have developed a way to produce sharp fluid jets with enough precision that they can inject material into a single, living cell. The technique promises a way to deliver drugs to cells one at a time, which is likely to be very valuable for research involving stem cells [...]

August 9th, 2010 | Posted in Biology News | Read More »

Faster DNA Analysis at Room Temperature

Faster DNA Analysis at Room Temperature

DNA microarrays are one of the most powerful tools in molecular biology today. The devices, which can be used to probe biological samples and detect particular genes or genetic sequences, are employed in everything from forensic analysis to disease detection to drug development.
Now Paul Li and colleagues at Simon Fraser University in [...]

August 9th, 2010 | Posted in Biology News | Read More »

Butterflies Shed Light on How Some Species Respond to Global Warming

Butterflies Shed Light on How Some Species Respond to Global Warming

With global warming and climate change making headlines nearly every day, it could be reassuring to know that some creatures might cope by gradually moving to new areas as their current ones become less hospitable. Nevertheless, natural relocation of species is not something that can be taken for granted, according to [...]

August 9th, 2010 | Posted in Biology News | Read More »

Gene Brings Teeth in Shape

Gene Brings Teeth in Shape

No healthy teeth without this gene: if during tooth formation (odontogenesis) the so-called Jagged2 gene is inactivated, and hence the Notch signalling pathway interrupted, tooth crowns will be malformed and enamel will be lacking. As this signalling pathway is involved in the formation of all tissues and organs, the new insights [...]

August 9th, 2010 | Posted in Biology News | Read More »

Hitchhiking Bacteria Can Go Against the Flow

Hitchhiking Bacteria Can Go Against the Flow

A new study co-authored by professor Kam Tang of the Virginia Institute of Marine Science reveals that tiny aquatic organisms known as “water fleas” play an important role in carrying hitchhiking bacteria to otherwise inaccessible lake and ocean habitats.
The article, “Bacteria dispersal by hitchhiking on zooplankton,” appeared in the June 29 issue [...]

August 9th, 2010 | Posted in Biology News | Read More »

Scientists Map All Mammalian Gene Interactions

Scientists Map All Mammalian Gene Interactions

In one of the first efforts of its kind, UCLA researchers have taken mammalian genome maps, including human maps, one step further by showing not just the order in which genes fall in the genome but which genes actually interact.
The findings, published in the August issue of the journal Genome Research, will [...]

August 9th, 2010 | Posted in Biology News | Read More »

Jaw Bone Grown from Adult Stem Cells

A Columbia scientist has become the first to grow a complex, full-size bone from human adult stem cells.
Gordana Vunjak-Novakovic, a professor of biomedical engineering at the Fu Foundation School of Engineering and Applied Science, reports that her team grew a temporomandibular joint (TMJ) from stem cells derived from bone marrow. Her [...]

March 31st, 2010 | Posted in Biology News | Read More »

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