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2010-05-03 14:19:00

INDIANAPOLIS, May 3 /PRNewswire/ -- Vertellus Specialties Inc., a leading specialty chemicals company, today announced the acquisition of certain assets of the McLaughlin Gormley King Company's (MGK®) insect repellent business. Included in the acquisition are several MGK® insect repellent products including DEET, plus associated end-use formulations, product registrations, and customer lists. The acquisition does not include any physical facility...

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2010-02-09 14:48:44

UC Davis chemical ecologist Walter Leal identifies the chemical source of an annoying attraction When the time came for chemical ecologist Walter Leal to test whether humans make a natural odor that attracts mosquitoes, Leal himself was the first to volunteer. "I measured my own levels," Leal said. "I thought I would set a good example. If you do it first, then others won't be scared." In truth, there was little, if any, reason to be frightened. The scientists were looking only for the...

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2009-10-28 08:53:52

Chemical ecologists in the Walter Leal lab at the University of California, Davis, have identified the dominant odor naturally produced in humans and birds that attracts the blood-feeding Culex mosquitoes, which transmits West Nile virus and other life-threatening diseases.  The groundbreaking research explains why mosquitoes shifted hosts from birds to humans and paves the way for key developments in mosquito and disease control. Entomology professor Walter Leal and postdoctoral...

2009-08-18 07:21:14

After searching for 50 years, scientists finally have discovered new mosquito repellents that beat DEET for warding off those pesky, disease-carrying insects. The stuff seems like a dream come true. It makes mosquitoes buzz off three times longer than DEET, the active ingredient in many of today's bug repellents. It does not have the unpleasant odor and it does not cause DEET's sticky-skin sensation. But there's a fly in the ointment. The odds are against any of the new repellents finding a...

2009-08-17 15:20:53

U.S. scientists say they've created new mosquito repellents that perform better than DEET, the most used chemical to repel the disease-carrying insects. U.S. Department of Agriculture researchers said their new repellents work three times longer than DEET, eliminates DEET's unpleasant odor and don't cause DEET's sticky-skin sensation. But scientists caution the new repellents might never find a place on store shelves. Ulrich Bernier, the USDA's lead researcher for the repellent study, said...

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2009-08-16 12:55:00

After searching for more than 50 years, scientists finally have discovered a number of new mosquito repellents that beat DEET, the gold standard for warding off those pesky, sometimes disease-carrying insects. The stuff seems like a dream come true. It makes mosquitoes buzz off three times longer than DEET, the active ingredient in many of today's bug repellents. It does not have the unpleasant odor of DEET. And it does not cause DEET's sticky-skin sensation. But there's a fly in the...

2009-08-11 14:40:00

HARRISBURG, Pa., Aug. 11 /PRNewswire-USNewswire/ -- State Health Secretary Everette James today reported this year's first confirmed human case of West Nile virus in Pennsylvania. The individual is a 21-year-old woman from Luzerne County. "The number of cases of West Nile disease has declined significantly in the past five years but this season's first case is a reminder that the disease is still out there," Secretary James said. "You can take precautions to protect yourself from this...

2009-08-05 13:23:01

The active ingredient in many insect repellents, N,N-Diethyl-3-methylbenzamide, known as DEET, may harm the central nervous system, French researchers said. Vincent Corbel from the Institut de Recherche pour le Developpement in Montpellier and Bruno Lapied of the University of Angers, both in France, led a team of researchers that investigated the toxicity of DEET. We've found that DEET is not simply a behavior-modifying chemical but also inhibits the activity of a key central nervous...

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2009-08-05 10:40:00

A study released on Wednesday warned that one of the world's most common insect repellents acts on the central nervous system in the same way as some insecticides and nerve gases, AFP reported. Researchers say moderate use of the chemical compound deet is most likely safe, but experiments on insects, as well as on enzymes extracted from mice and human neurons, showed for the first time that it can interfere with the proper functioning of the nervous system. Many experts are urgently calling...

2009-08-04 19:11:53

DEET, the active ingredient in many insect repellents, has been found to be neurotoxic in insects and mammals, French researchers reported Tuesday. Because of their finding, researchers are saying more investigations are needed quickly to either confirm or dismiss potential neurotoxicity to humans, the researchers said in a news release. We've found that DEET is not simply a behavior-modifying chemical but also inhibits the activity of a key central nervous system enzyme, acetycholinesterase,...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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