Friday, November 8, 2013

Holograms offer hope against malaria

A press release from the University of Edinburgh: Edinburgh scientists have developed a 3D filming technique that could inform research to stem the spread of malaria. Creating moving digital holograms of malaria sperm has given researchers fresh insights into the behaviour of these tiny life forms.

Understanding how malaria parasites mate could pave the way for improved prevention and control of this deadly disease, which poses a threat to half of the world’s population. Malaria parasites mate in the gut of mosquitoes, and people can catch the disease when they are bitten by these infected, blood-sucking insects.

Scientists from Edinburgh and the Rowland Institute at Harvard University were able to see that malaria sperm move in an irregular, lopsided corkscrew motion. This enables them to twist to the left or the right, as well as go forwards and backwards, and is thought to help the sperm swim between red blood cells to find female mates.

Malaria sperm use microscopic structures, known as flagella, to swim. These structures are important because they are used by many parasites to invade parts of the body. They also perform essential roles in embryonic development, reproduction, and nutrient uptake in all animals. Scientists say the simple structure of the malaria sperm makes it an excellent model system in which to study flagella in animals....

Electron micrograph of the delivery of a heme detoxification protein to the malaria parasite food vacuole. fv, food vacuole; fvm, fv membrane; hz, hemozoin; hdp, heme detoxification protein; tv, transport vesicle. Bar, 0.5 µm. The protein is labeled with a specific antibody bound to gold particles (immuno-electron microscopy). Shot by Jani D, Nagarkatti R, Beatty W, Angel R, Slebodnick C, Andersen J, Kumar S, Rathore D., Wikimedia Commons, under the Creative Commons Attribution 3.0 Unported license

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