Wednesday, August 21, 2013
Friday, August 16, 2013
Interesting Information: Australian researchers find new drug to tackle mal...

Interesting Information: New malaria vaccine shows promise in clinical tria...

Monday, August 12, 2013
India launched First Indigenous Aircraft Carrier INS Vikrant
Saturday, August 10, 2013
Drinking hot chocolate keeps brain healthy: study
New malaria vaccine shows promise in clinical trials
First malaria vaccine works in major trial
Malaria Vaccine Shows Strongest Protection Yet Against Parasite
At its current power, the candidate vaccine “potentially translates to tens of millions of malaria cases among children that can be averted annually,” Dr. Tsiri Agbenyega, head of the malaria research unit at the Komfo-Anokye Hospital in Ghana and chair of the RTS,S Clinical Trials Partnership Committee, told reporters during Tuesday’s briefing. “The study found that RTS,S also reduced risk of severe malaria by 47%. That’s remarkable when you consider that there has never been a successful vaccine against a human parasite, nor against malaria.”
sources : the indian express
Wednesday, July 24, 2013
Gene that may stop spread of breast cancer identified
Scientists, including one of Indian-origin, have found that limiting the function of a gene can stop the spread of breast cancer and reduce the risk of death.
The study by Kiran Chada, professor of biochemistry and molecular biology at Robert Wood Johnson Medical School, part of Rutgers, The State University of New Jersey, and his team shows that metastasis in breast cancer and the risk of death are reduced when the function of the gene HGMA2, is limited.
"Our research has shown that HGMA2 plays a part in regulating the spread of cancer and could be considered a driver of the process," said Chada, who was principal investigator of the study.
"Further studies could result in the development of therapeutic treatments for patients with breast cancer which could prevent HGMA2's function, reduce the spread of cancer and extend a patient's life," he said.
According to Chada, only a subset of cancer cells in the primary tumour is potentially metastatic and these cells are found at the edge of the tumour in a region known as the invasive front.
Chada's laboratory showed that normal cells do not express HMGA2, and the expression of this gene product converts normal cells into metastatic cells. Furthermore, the majority of cells which express HMGA2 in human breast cancer tissue were found to be at the invasive
front. In additional studies, the researchers showed mice that could not express the HMGA2 gene were found to have a
substantially reduced incidence of breast cancer.
The study was published in Cancer Research, a journal of the American Association for Cancer Research (AACR).
sources : the Indian express
Australian researchers find new drug to tackle malaria
Australian researchers have said that a new drug that stops the malaria parasite from using vitamin B1 to multiply is now plausible.
Pharmacologist Kevin Saliba of Australian National University along with his team have reported their findings in recent issue of Nature Communications, the Australian Broadcasting Corporation reported.
Just like humans, malaria parasites need vitamins to grow and multiply. Thiamine (vitamin B1) is converted in cells to a cofactor, which then binds a number of enzymes involved in energy production.
Saliba and colleagues worked on if it might be possible to inhibit this thiamine metabolism pathway.
"We can target the pathways by which the parasite takes up the vitamin and metabolises it. These pathways can serve as drug targets," Saliba said.
As a 'probe drug', they used an analogue of thiamine, which looks similar to the vitamin but cannot actually be used in energy production.
To provide proof of principle they looked at what happens to the pathway involving two enzymes – oxoglutarate dehydrogenase and pyruvate dehydrogenase.
In an invitro experiment, the researchers found that the parasite metabolised the analogue into a cofactor which binds to the enzymes, but they found evidence that the analogue was inhibiting one of the enzymes.
Saliba and the team also gave the thiamine analogue to mice infected with malaria and found they lost weight.
"That's consistent with the drug having some toxicity," said Saliba.
The thiamine analogue used here would interfere with energy metabolism in humans so any anti-malarial drug based on these findings would have to be designed very carefully, he added.
"The idea is that you come up with a drug that would selectively target the parasite pathway. We would have to rely on slight differences between the human and parasite thiamine metabolism pathways," said Saliba.
There are currently anti-malarial drugs that target folate metabolism,which means there is a precedent for having a drug that targets a metabolic pathway in a pathogen that also exists in humans.
A major problem with anti-malarials is the development of resistance.
"The malaria parasite has become resistant to just about all the drugs we've used against it," Saliba said.
He said it is exciting to have one drug that is metabolised in the parasite that targets multiple enzymes in energy metabolism.
"It will be more difficult for the parasites to become resistant to a drug that's binding to several enzymes," said Saliba.
According to the World Health Organisation, about 3.3 billion people - almost half of the world's population – are at risk of malaria.
source : the Indian express
Skipping breakfast increases heart attack risk
Men who regularly skip breakfast may be at a 27 per cent higher risk of heart attack than those who take their morning meal, a large 16-year study has warned.
According to the study published in the American Heart Association journal Circulation, men who reported they skipped breakfast had a higher risk of heart attack or death from coronary heart disease.
The timing of meals, whether it's missing a meal in the morning or eating a meal very late at night, may cause adverse metabolic effects that lead to coronary heart disease.
Even after accounting for modest differences in diet, physical activity, smoking and other lifestyle factors, the association between skipping breakfast (or eating very late at night) and coronary heart disease persisted.
Researchers analysed food frequency questionnaire data and tracked health outcomes for 16 years (1992-2008) on 26,902 male health professionals ages 45-82. During the study, 1,572 of the men had first-time cardiac events.
The study found that men who reported eating late at night (eating after going to bed) had a 55 per cent higher coronary heart disease risk than those who didn't. However, researchers were less convinced this was a major public health concern because few men in the study reported this behaviour.
"Skipping breakfast may lead to one or more risk factors, including obesity, high blood pressure, high cholesterol and diabetes, which may in turn lead to a heart attack over time," said Leah E Cahill, study lead author and Postdoctoral Research Fellow in the Department of Nutrition at Harvard School of Public Health in Boston.
"Our study group has spent decades studying the health effects of diet quality and composition, and now this new data also suggests overall dietary habits can be important to lower risk of coronary heart disease," said Eric Rimm, senior author and Associate Professor of Epidemiology and Nutrition, Harvard School of Public Health and Associate Professor of Medicine at the Harvard Medical School.
Men who reported eating breakfast ate on average one more time per day than those who skipped breakfast, implying that those who abstained from breakfast were not eating additional make-up meals later in the day.
Although there was some overlap between those who skipped breakfast and those who ate late at night, 76 per cent of late-night eaters also ate breakfast, researchers said. While the current study group was composed of men who were of 97 per cent white European descent, the results should also apply to women and other ethnic groups, but this should be tested in additional studies, researchers said.
source : the Indian express
Sunday, July 14, 2013
10 All-Time Greatest Books
10. E.B. White, Charlotte's Web (1952)
Author : E. B. White
Illustrator : Garth Williams
Country : United States
Language : English
Genre Children's
Publisher Harper & Brothers
Publication date 1952
Pages 192 pp
Charlotte's Web is a children's novel by American author E. B. White and illustrated by Garth Williams; it was published in 1952 by Harper & Brothers. The novel tells the story of a pig named Wilbur and his friendship with a barn spider named Charlotte. When Wilbur is in danger of being slaughtered by the farmer, Charlotte writes messages praising Wilbur (Some Pig) in her web in order to persuade the farmer to let him live.
9. Toni Morrison, Beloved (1987)
Beloved is a novel by the American writer Toni Morrison. Set after the American Civil War, it is inspired by the story of an African-American slave, Margaret Garner, who temporarily escaped slavery
Beloved is a novel by the American writer Toni Morrison. Set after the American Civil War(1861–1865), it is inspired by the story of an African-American slave, Margaret Garner, who temporarily escaped slavery during 1856 in Kentucky by fleeing to Ohio, a free state. A posse arrived to retrieve her and her children under the Fugitive Slave Act of 1850, which gave slave owners the right to pursue slaves across state borders. Margaret killed her two-year-old daughter rather than allow her to be recaptured.
8. John Updike, The Rabbit Quartet (1960-1990)
''Rabbit'' Angstrom runs from marriage and responsibility and runs smack into them again in Updike's masterful chronicle of a man's four-decade race against the American zeitgeist
7. J.K. Rowling, Harry Potter: The Complete Series (1997-2007)
Surprised to see Harry so high on our list? Well, his is the richest coming-of-age tale ever. Thanks to Rowling's luminous storytelling and dazzling imagination, people will still be tearing through it in a hundred years.
6. Willa Cather, My Ántonia (1918)
My Ántonia, first published 1918, is considered one of the greatest novels by American writer Willa Cather. It is the final book of her "prairie trilogy" of novels, the companion volumes being O Pioneers! and The Song of the Lark.
5. Gabriel García Márquez, One Hundred Years of Solitude(1967)
One Hundred Years of Solitude, is a novel by Colombian author Gabriel García Márquez that tells the multi-generational story of the Buendía family, whose patriarch, José Arcadio Buendía, founds the town of Macondo, the metaphoric Colombia
4. Charles Dickens, Great Expectations (1861)
Great Expectations is Charles Dickens's thirteenth novel. It is the second novel, after David Copperfield, to be fully narrated in the first person.
3. Jane Austen, Pride and Prejudice (1813)
Pride and Prejudice is a novel by Jane Austen, first published in 1813. The story follows the main character Elizabeth Bennet as she deals with issues of manners, upbringing, morality, education, and marriage in the society of the landed gentry of early 19th-century England. Elizabeth is the second of five daughters of a country gentleman living near the fictional town of Meryton in Hertfordshire, near London.
Though the story is set at the turn of the 19th century, it retains a fascination for modern readers, continuing near the top of lists of "most loved books" such as The Big Read. It has become one of the most popular novels in English literature and receives considerable attention from literary scholars. Modern interest in the book has resulted in a number of dramatic adaptations and an abundance of novels and stories imitating Austen's memorable characters or themes. To date, the book has sold some 20 million copies worldwide
2. F. Scott Fitzgerald, The Great Gatsby (1925)
The Great Gatsby is a 1925 novel written by American author F. Scott Fitzgerald that follows a cast of characters living in the fictional town of West Egg on prosperous Long Island in the summer of 1922.
1. Leo Tolstoy, Anna Karenina (1878)
Anna Karenina is a novel by the Russian writer Leo Tolstoy, published in serial installments from 1873 to 1877 in the periodical The Russian Messenger.
Britain's royal baby billionaire even before birth
Wealth-X found that the unborn child of the Duke and Duchess of Cambridge is already a billionaire, given the fortunes of the immediate members of the British royal family, including great grandmother Queen Elizabeth II, great grandfather Princes Philip, grandfather Charles and father William.
Queen Elizabeth II, who celebrated her diamond jubilee as Britain's monarch last year, tops the wealth stakes with a personal net worth of USD 660 million with her income in 2014 is expected to rise by 15 per cent from USD 54 million to nearly USD 58 million, after the Crown Estate reported an increase in profits in June.
However, the net worth figures do not include the possible inheritance of the crown jewels and the Royal Collection.
Prince Charles is worth around USD 370 million and William around USD 20 million, making the combined net worth of the immediate members of the royal family over USD 1 billion.
The royal baby, who will be third in line to the throne and the future King or Queen of England, is expected any time now.
Buckingham Palace has not confirmed an exact date for Kate to give birth, but speculation has centered on this weekend.
She has opted for a natural birth at the private Lingo wing of St Mary's hospital in Paddington, central London, where a police presence has increased in recent days.
Media from the world over have camped out at the hospital, which was also where Princess Diana gave birth to both princes William and Harry.
William, who took leave from official duties as an air-sea rescue helicopter captain with the Royal Air Force (RAF) based at Anglesey in North Wales, is whiling away the wait by playing polo.
The father-to-be played at a fundraising match in Hampshire for a charity run by the Duchess of Cornwall's brother and was to play again today at a club in Wiltshire, despite predictions that Sunday is the most likely day for his wife to give birth.
Buckingham Palace said the prince would play unless he had to be at his wife's side.
William's cousin, Zara Phillips, was also playing polo at a separate event on Saturday, the week after she announced that she and her husband Mike Tindal, the former England rugby captain, are expecting their first child in the New Year.
source : The Indian Express
Wednesday, July 10, 2013
Chinese institute develops 100-megapixel IOE3-Kanban camera
Tuesday, July 9, 2013
Twitter can't beat news agencies: study
News agencies continue to have an edge over Twitter in being the first to provide people with the news, UK scientists have found.
Research into reporting of news events by Twitter and newswire services has found that while Twitter can sometimes break news before news-wires, for major events there is little evidence that it can replace traditional news outlets.
Scientists at the Universities of Edinburgh and Glasgow developed a software algorithm to track Twitter activity.
They used it to study 51 million tweets over 11 weeks in summer of 2011 and compared these with output from news outlets for the same period.
Media houses tracked for the study included the BBC, CNN and the New York Times, which seek to set the news agenda and break news stories ahead of one another.
Scientists were able to examine Twitter messages relating to major news items. They also identified a large amount of minor news items that had featured on Twitter but had been ignored by the mainstream media, researchers said.
However, neither Twitter nor news-wires was regularly faster than the other in breaking high-profile news, researchers said.
When Twitter outperformed news-wires for speed, it was for mainly for sport and disaster-related events, their findings show.
Twitter's main benefits for news are bringing additional coverage of events, and for sharing news items of interest to niche audiences or with a short lifespan, such as local sports results, the study found.
source : the Indian express
Bugs may be last surviving life on Earth
Thermophilic or heat-loving bacteria may be amongst the last life on Earth: study
Bugs may be among the last survivors of the end of the world, researchers say. Thermophilic or heat-loving bacteria may be amongst the last life on Earth, perhaps surviving 2.8 billion years into the future, according to a new study.
In two billion years' time, life on Earth will be confined to pockets of liquid water deep underground, according to Astros biologist Jack O'Malley James of the University of St Andrews.
The new research also suggests that though the hardiest forms of life may have a foothold on similar worlds in orbit around other stars, evidence for it may be very subtle. Ultimately, a combination of slow and rapid environmental changes will result in the extinction of all species on Earth, with the last inhabitants disappearing within 2.8 billion years from now.
The main driver for these changes will be the Sun. As it ages over the next few billion years, the Sun will remain stable but become steadily more luminous, increasing the intensity of its heat felt on Earth and warming the planet to such an extent that the oceans evaporate.
O'Malley James has created a computer model to simulate these extremely long-range temperature forecasts and has used the results to predict the time-line of future extinctions. Within the next billion years, increased evaporation rates and chemical reactions with rainwater will draw more and more carbon dioxide from the Earth's atmosphere. The falling levels of CO2 will lead to the disappearance of plants and animals and our home planet will become a world of microbes.
At the same time the Earth will be depleted of oxygen and will be drying out as the rising temperatures lead to the evaporation of the oceans. A billion years after that the oceans will have gone completely.
"The far-future Earth will be very hostile to life by this point. All living things require liquid water, so any remaining life will be restricted to pockets of liquid water, perhaps at cooler, higher altitudes or in caves or underground," said O'Malley-James. This life will need to cope with many extremes like high temperatures and intense ultraviolet radiation and only a few microbial species known on Earth today could cope with this. The new model not only tells us a lot about our own planet's future, but it can also help us to recognize other inhabited planets that may be approaching the end of their habitable lifetimes.
"We have now simulated a dying biosphere composed of populations of the species that are most likely to survive to determine what types of gases they would release to the atmosphere. By the point at which all life disappears from the planet, we're left with a nitrogen:carbon-dioxide atmosphere with methane being the only sign of active life," said O'Malley-James.
source : the Indian express
Brain's 'switch' for long-term memory identified
Scientists have identified calcium in the cell nucleus to be a cellular "switch" responsible for the formation of long-term memory.
Neurobiologists at Heidelberg University in Germany used the fruit fly Drosophila melanogaster as a model to investigate how the brain learns.
The team led by Professor Dr Christophe Schuster and Professor Dr Hilmar Bading wanted to know which signals in the brain were responsible for building long-term memory and for forming the special proteins involved.
The team from the Interdisciplinary Center for Neurosciences (IZN) measured nuclear calcium levels with a fluorescent protein in the association and learning centres of the insect's brain to investigate any changes that might occur during the learning process.
Their work on the fruit fly revealed brief surges in calcium levels in the cell nuclei of certain neurons during learning. It was this calcium signal that researchers identified as the trigger of a genetic programmed that controls the production of "memory proteins." If this nuclear calcium switch is blocked, the flies are unable to form long-term memory.
Schuster explained that insects and mammals separated evolutionary paths approximately 600 million years ago. In spite of this sizable gap, certain vitally important processes such as memory formation use similar cellular mechanisms in humans, mice and flies, as the researchers' experiments were able to prove.
"These commonalities indicate that the formation of long-term memory is an ancient phenomenon already present in the shared ancestors of insects and vertebrates. Both species probably use similar cellular mechanisms for forming long-term memory, including the nuclear calcium switch," Schuster said.
The researchers assume that similar switches based on nuclear calcium signals may have applications in other areas presumably whenever organisms need to adapt to new conditions over the long term. "Pain memory, for example, or certain protective and survival functions of neurons use this nuclear calcium switch, too," said Bading.
"This cellular switch may no longer work as well in the elderly, which Bading believes may explain the decline in memory typically observed in old age. "Thus, the discoveries by the Heidelberg neurobiologists open up new perspectives for the treatment of age- and illness-related changes in brain functions," Bading said. The study was published in the journal Science Signaling.
SOURC : THE INDIAN EXPRESS
Tuesday, July 2, 2013
India launches first ever dedicated navigation satellite, joins elite club
Precisely at 11.41 pm, India's workhorse PSLV C22 lifted off in a perfect text book launch, carrying IRNSS-1A satellite, painting a dense golden flame in the dark canvas of the sky.
About 20 minutes after its launch, the rocket placed into the IRNSS-1A into its orbit.
An elated ISRO chairman K Radhakrishnan said the IRNSS-1A satellite was precisely injected into its intended orbit.
"This only proves that PSLV is an extremely reliable vehicle and with this flight, we are also entering into a new era of space application in the country that is the beginning of satellite navigation programme."
The data from the satellite would help the country in a range of fields including disaster management, vehicle tracking, fleet management and marine navigation.
Developed by India, the IRNSS-1A, the first of the 7 satellites constituting the Indian Regional Navigation Satellite System (IRNSS) space segment, has a mission life of 10 years.
It is designed to provide accurate position information service to users in the country as well as the region extending up to 1,500 km from its boundary,which is its
primary service area. IRNSS will be on lines with Russia's Global Orbiting Navigation Satellite System (GLONASS), United States' Global Positioning System (GPS), European Union's Galileo (GNSS), China's BeiDou satellite navigation system and the Quasi-Zenith Satellite System.
"I am extremely happy to announce that we had another excellent flight of our PSLV vehicle. This is the 23rd successive successful flight of PSLV and the fourth successful flight of extended version of PSLV," Radhakrishnan said.
The navigational system would provide two types of services --Standard Positioning Service, which is provided to all the users and Restricted Service, which is an encrypted service provided only to the authorised users.
ISRO looking for more participation of private players in Joint Ventures
With its workhorse PSLV creating a niche for itself in the space industry across the globe, ISRO is looking for the more participation of private players in joint ventures, a top official said today. "Over 400 industrial firms are already working with us. PSLV has created a niche for itself in the industry, which can carry over 1.5 tonnes. We have 12 missions in a year. We are looking for partnership from more private players," ISRO Chairman K Radhakrishnan told reporters here.
After India's first dedicated navigation satellite, IRNSS-1A-- was successfully launched on board the PSLV-C22 today, Radhakrishnan said, "This only proves that PSLV is an extremely reliable vehicle and with this flight, we are also entering into a new era of space application in the country that is the beginning of satellite navigation programme."
"I am extremely happy to announce that we had another excellent flight of our PSLV vehicle. This is the 23rd successive successful flight of PSLV and the fourth successful flight of extended version of PSLV," he said.
sours : the inidan express Updated: Tue, 2 Jul 2013
Thursday, June 27, 2013
China Builds World's Fastest Supercomputer (Tianhe-2)
Wednesday, June 26, 2013
Coffee can help you loose weight: study
Four daily cups of tea or coffee can lower blood pressure
Women try out 150 hairstyles in their lifetime: study
Women sport 150 different hairstyles in their lifetime, trying out various cuts, colours and shapes, according to a new research.
The study of 2,000 women found that about one in 20 likes to try something different with each trip to the hairdresser.
Almost half are willing to be experimental and take risks with their tresses.
Women are likely to go for two new styles and at least one colour change every year with some switching shades 100 times between the ages of 15 and 65, the 'Daily Express' reported.
The study found 64 per cent of women will alter their hair simply because they are bored with their current style.
Nearly 12 per cent will change their hair so as to look like a celebrity while 15 per cent will change their style for a wedding.
Thirteen per cent women would change their hairstyle after having a baby. Other reasons for trying out a new hairstyle were birthdays and break-ups.
The research by Toni&Guy stylists found women visit the hairdresser five times a year making around 250 trips before hitting 65.
"It's great to see that most women will experiment with their hair rather than stick to the same tried and tested look," said Sacha Mascolo-Tarbuck, global creative director for the chain.
"A new hairstyle or colour can be a great way to brighten up your appearance or even celebrate a big life change or milestone event.
"If you like being the centre of attention and keeping up with the latest trends, nothing does this more than a radical cut or colour.
"And if you aren't brave enough to go for a completely different look, just going for a slightly lighter or darker shade than usual, or chopping more off the ends, can still have the same effect," Sacha said.
source : The Indian EXPRESS
World experts pool knowledge against killer virus

UAE daily The National said that the World Health Organisation convening such a meeting "is both worrying and reassuring".
"Medical experts and public-health authorities are obviously taking the problem seriously, which is a good start to managing it," it said.
However, the experts admitted that they know very little about the coronavirus that causes the disease - not even where it comes from, or how it is transmitted.
The nearest related virus is found in bats, and it is speculated that it passes to camels via dates infected by bat droppings and then onto humans. Transmission from camel to human - and between humans - is also not fully understood.
"The ailment's name is based on the fact that the majority of the 60 cases - and 38 deaths - identified worldwide starting in April 2012 have originated in the Middle East. The handful of cases in western Europehave involved travellers from the Middle East," the newspaper said.
So far, at least, the pneumonia-like sickness the virus causes has not been very contagious. There is no "sustained community transmission".
However, the experts were concerned that the occasional MERS victims could become what they call a "super-spreader" - a person with an increased ability to infect others.
source : the times of India news
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