The memory and attention problems plaguing thousands of veterans from the first Gulf War might be caused by low-level exposure to insecticides and nerve gas, said researchers at Georgia Health Sciences University. Gulf War illness could be caused by a class of chemicals known as organophosphates, which can include popular pesticides and insecticides but also the nerve gases sarin and cyclosarin. The Department of Defense and the Central Intelligence Agency estimate 100,000 people might have been exposed to low levels of those nerve gases when troops blew up a weapons depot in Khamisiyah, Iraq, on March 10, 1991. Troops were also routinely exposed to the chemical in insecticides, said Dr. Alvin Terry, the director of the Animal Behavior Center at GHSU and professor of pharmacology and toxicology.
Terry and a colleague, Dr. Nathan Yanasak, have an $860,000, three-year grant from the DOD to study whether the chemicals can cause nerve damage in the brains of animals – in this case, mice – that could lead to memory and attention problems. They will look to see whether the insecticide chlorpyrifos, which is commonly used on crops in the U.S. and around the world – when given in low doses – might hamper the ability of the nerve cells to transport food and waste up and down the nerve. “For it to maintain its health, it has to be able to transport things” along the axon of the nerve, Terry said. The researchers are using newer technology, such as manganese-enhanced MRI, to study that because manganese is known to be taken up and transported by nerves in the brain, he said. Researchers will also check whether the protective sheath of the nerve cells, known as myelin, is depleted by the low-level exposure, which can affect nerve firing. “It’s probably subtle if it is there,” Terry said.
In previous work, including a study published this year, Terry and colleagues showed that “subthreshold” doses of the chemical caused memory and attention problems in rats even months later. “Long after they have been exposed, you can still pick up on these memory deficits,” he said. What makes that intriguing is that it is similar to problems that plague veterans with Gulf War illness, Terry said. The study in animals is is being done to find out whether that is the cause of the symptoms, which could stem from a number of other causes, such as the oil well fires that raged during the conflict and had wide exposure, Terry said. “There’s a whole multitude of things that you could say might be a possibility,” he said. The DOD has funded research over the years into what might cause Gulf War illness, “but no one has really solved it. There have been a lot of controversies.” His work has drawn some fire from chemical companies, but Terry said he strives for balance in his view of the chemicals. “They have without a doubt dramatically improved farming productivity, and they have helped to get rid of vector-bone illnesses,” he said. “It’s just knowing the long-term effects; we need to be more educated on that and try to be balanced. [Source: The Augusta Chronicle Tom Corwin article 19 Mar 2012 ++]
Army officials recently gave a six-month extension to researchers investigating whether acupuncture can be effective in treating Gulf War Syndrome. Now, the study is looking for 30 more veterans to take part in the effort. Lisa Conboy, co-director of research at the New England School of Acupuncture and a coordinator for the study, said the results of the three-year study still have to be finalized, but officials have seen positive feedback on the treatments. About 120 veterans have taken part, undergoing acupuncture treatments to evaluate their effect on managing headaches, muscle soreness and other pain associated with the controversial disorder. Conboy said she has noticed in recent years a larger willingness by military and veterans officials to consider alternative medicine such as acupuncture, a development she said is encouraging for patients seeking pain relief. Researchers are hopeful their final results will reinforce that progress. The 30 new volunteers must live in the Northeast and suffer from Gulf War Syndrome. Veterans can apply by calling 617-558-1788 ext. 269 or emailing firstname.lastname@example.org. [Source: Stars & Stripes Leo Shane article 26 Mar 2012 ++]