& çâÌæÚUæð´ ·¤è ¥ôÚU Îð¹Ùæ ÁæÚUè ÚU¹ð´ ¥ÍæüÌ ¥ÂÙð ÜÿØ ÂÚU ŠØæÙ ÚU¹ð´Ð ãæÚU Ù ×æÙð´, €UØô´ç·¤ ·¤æ× ·¤ÚUÙð âð ¥æÂ·¤ô ©gðàØ ·¤è Âýæç# ãôÌè ãñ ¥õÚU ÁèßÙ ·¤æ ¹æÜèÂÙ ÎêÚU ãôÌæ ãñÐ ÖÜð ãè ÁèßÙ ×ð´ ç·¤ÌÙè Öè ·¤çÆÙæ§ü €UØô´ Ù ¥æ°, çÁ™ææâæ ¥õÚU ©ˆâæã ÕÙæ° ÚU¹ð´Ð ŠØæÙ ÚU¹ð´, ÜÿØ ã×ðàææ ¥æÂ·Ô¤ Âæâ ãôÌð ãñ´ çÁ‹ãð´ ÂæÙð ·Ô¤ çÜ° ÂýØæâ ¥æÂ ·¤Öè Öè àæéM¤ ·¤ÚU â·¤Ìð ãñ´Ð

Mosquitoes put off biting by diet drugs

CNN Online
By giving mosquitoes diet drugs, they could be prevented from biting humans and spreading deadly diseases, according to new research.
Scientists found that female mosquitoes, which transmit the microbes that kill millions of people every year, lose interest in human blood if their appetites are suppressed with the chemicals.
The study, which is still in its early stages, was published in the journal Cell. It showed that by manipulating the hormones which make mosquitoes feel full, the insects' desire for blood can be satiated.
"We were impressed and amazed that drugs designed to affect human appetite worked perfectly to suppress mosquito appetite," study author Leslie Vosshall said in a statement.
The scientists carried out experiments on female Aedes aegypti mosquitoes, which require human blood for the proteins they need to produce eggs. This species is responsible for spreading yellow fever, dengue fever and Zika virus.
The researchers noted, however, that once these mosquitoes fed on human blood and become bloated, their attraction to humans declines for several days.
"It's like the ultimate Thanskgiving dinner," said Laura Duvall, a study author.
The team of researchers from Rockefeller University in New York City targeted their research on neuropeptide Y (NPY) receptors, which regulate food intake in humans.
The scientists gave the mosquitoes a saline solution containing the drugs developed by the pharmaceutical
industry to activate and inhibit these receptors in humans, and found the insects' appetite and attraction to humans dropped sharply.
They measured this by hanging up a nylon stocking previously worn by Duvall for long enough for body odors to be absorbed, and observing whether mosquitoes flew toward it. They also tested the mosquitoes on mice to see whether they would bite a live host, Duvall told CNN.
The scientists tested all 49 NPY receptors in mosquitoes with the drugs to determine which was responsible for controlling appetite. They also conducted extensive testing on thousands of compounds to determine which could target mosquitoes directly rather than also having an impact on humans.
James Logan, head of the department for disease control at the London School of Hygiene and Tropical Medicine, described the discovery of this potential new technology as "exciting" and "intriguing."
Paul Reiter, a former professor of medical entomology at the Pasteur Institute, also told CNN that the proposed method was a "fascinating idea" and "very plausible."