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Showing posts with label drug. Show all posts
Showing posts with label drug. Show all posts
Thursday, July 7, 2016
Ibuprofen can help 'disable' Ebola and prevent infection.
In what is being hailed as a significant breakthrough in the battle against the deadly Ebola virus, researchers have found an unlikely treatment source - an everyday ibuprofen painkiller. Using Diamond Light Source, a light 10 billion times brighter than the Sun, the team was able to analyse the structure of the Ebola virus at a far higher resolution than had previously been possible.
The researchers found ibuprofen, as well as cancer drug Toremifene, were able to bind to a protein on the surface of Ebola, preventing infection. The team described this as being able to "disable" the virus. Further work will be needed to analyse the structures of both the virus and the drugs, as well as how they interact, but the team is hopeful the research could be built upon to develop anti-Ebola treatments. "These complex structures reveal the mechanism of inhibition and may guide the development of more powerful anti-EBOV drugs," the team wrote in Nature.
No drug has yet been developed that can stop Ebola. Nearly 11,000 people died of the disease in West Africa alone, with 30,000 infected. Many victims have since been infected with post-Ebola syndrome, which has lead to loss of sight and sickness.
Contributed by wired.co.uk
Saturday, May 28, 2016
How thousands of gamers are helping to decode the human body.
EVE Online isn't just a game about internet spaceships and sci-fi politics. Since March, developer CCP Games has been running Project Discovery – an initiative to help improve scientific understanding of the human body at the tiniest levels.
Run in conjunction with the Human Protein Atlas and Massively Multiplayer Online Science, the project taps into EVE Online's greatest resource – its player base – to help categorize millions of proteins.
"We show them an image, and they can change the color of it, putting green or red dyes on it to help them analyse it a little bit better," Linzi Campbell, game designer on Project Discovery, tells WIRED. "Then we also show them examples – cytoplasm is their favourite one! We show them what each of the different images should look like, and just get them to pick a few that they identify within the image. The identifications are scrambled each time, so it's not as simple as going 'ok, every time I just pick the one on the right' – they have to really think about it."
The analysis project is worked into EVE Online as a minigame, and works within the context of the game's lore. "We have this NPC organisation called the Drifters – they're like a mysterious entity in New Eden [EVE's interplanetary setting]," Campbell explains. "The players don't know an awful lot about the Drifters at the minute, so we disguised it within the universe as Drifter DNA that they were analysing. I think it just fit perfectly. We branded this as [research being done by] the Sisters of Eve, and they're analyzing this Drifter DNA."
The response has been tremendous. "We've had an amazing number of classifications, way over our greatest expectations," says Emma Lundberg, associate professor at the Human Protein Atlas. "Right now, after six weeks, we've had almost eight million classifications, and the players spent 16.2 million minutes playing the minigame. When we did the math, that translated – in Swedish measures – to 163 working years. It's crazy." "We had a little guess, internally. We said if we get 40,000+ classifications a day, we're happy. If we get 100,000 per day, then we're amazed," Lundberg adds. "But when it peaked in the beginning, we had 900,000 classifications in one day. Now it's stabilised, but we're still getting around 200,000 a day, so everyone is mind-blown. We never expected it."
Currently, EVE players are going through images from Lundberg's domain, who serves as director for the sub-cellular chapter of the atlas. It took players just three weeks to get through the entire workload, and are now engaging in a second pass for veracity, with no signs of interest dropping. "Part of the problem with the gamification of science is that participation rapidly drops and that's what we hoped we could prevent by doing it in an existing game, with rewards," says Lundberg. "I think that's the biggest difference, that it's integrated into the game."
The Human Protein Atlas itself is expanding on the mapping of the human genome, but at a much smaller level. "We have about 20,000 genes and right now we haven't even proven that more than 70 per cent even exist. So there's a big gap between protein research and DNA research, and there are several reasons for that," says Lundberg. "DNA you can amplify so it's easy to study, but you can't amplify proteins. Also, as all cells have the same DNA, you can [just] take a blood sample [to look at]. But proteins, that's the genes that are expressed, vary through the body. You have to cover the whole body and so it's a lot more difficult, from a technological point of view, to study proteins," she continues. "From my point of view, that's the interesting part – proteins are the molecules that perform the function, and drugs act by targeting proteins. So if you want to develop better drugs, understand how humans work, or understand biology, you have to know what the proteins are doing."
Players' efforts will soon be felt in the wider scientific field too. After verifying their categorisations and analyses – a process involving control images that researchers know are correct, used to measure performance of the EVE hivemind – their findings are incorporated into the HPA's database. All data is publicly available, and the atlas has around 100,000 monthly users. Already, an average of two peer-reviewed scientific papers are published every day, and when the next version of the atlas is published in December, future papers will incorporate the EVE players' data.
culled from wired.co.uk
Monday, March 14, 2016
Agro-Veterinary Business: role of environment in antibiotic resistance.
Antibiotic resistance is a global issue with developing countries being mostly affected .The research as to ways to combat the super bug effect has looked into techniques of animal production with the view that if antibiotic use is reduced in farm animals then there will not be any residues in the products thus eliciting development of antibiotic strains in man resulting in difficulty in treatment of simple conditions such as diarrhoea.
The reduction and absolute banning of antibiotics in farmed animals has shown dramatic changes in the antibiotic residues,but the identification of some antibiotic resistance strains that was not used even during production,has beam the search on another possible route of transmission.
The environment is the mixing media where various pathogens interact, pathogens from man,animals are exchanged freely .Antibiotics released into the environment may be spread through plants which later are consumed by humans, or by livestock.
The consequence is that relatively harmless conditions such as diarrhea caused by resistant coli bacteria or salmonella bacteria become dangerous or even lethal.
Drugs discharged into the environment are a problem in many parts of the world and antibiotics are spread in nature through urine from animals and humans, and many unfortunately have a very long life span.
The problem is very pronounced in many African countries because of poor sanitation conditions .
The quality of drugs available to man and animals also play a role in development of resistance,many countries with poor drug regulations where concentrations of active ingredients are not accurate,or the active ingredient is not even in the preparation( fake drugs).
This results in repeated treatment where the bacteria is not destroyed but becomes resistant to the drug.The environment is the mixing vat,and unless proper disposal of drugs,feces are incorporated into sanitation laws the problem will persist.
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