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Category Archives: Transhuman News

SpaceX Dragon to deliver research to Space Station – Phys.Org

Posted: June 8, 2017 at 10:47 pm

June 8, 2017 by Jenny Howard This is the explosion of a massive star blazes, or a supernova, observed by the NASA Hubble Space Telescope. The bright spot at top right of the image is a stellar blast, called a supernova. The Neutron Star Interior Composition Explorer (NICER) investigation, affixed to the exterior of the International Space Station, studies the physics of these stars, providing new insight into their nature and behavior. Credit: NASA, ESA, A.V. Filippenko (University of California, Berkeley), P. Challis (Harvard-Smithsonian Center for Astrophysics), et al.

SpaceX is scheduled to launch its Dragon spacecraft for its eleventh commercial resupply mission to the International Space Station June 1 from NASA's Kennedy Space Center's historic pad 39A. Dragon will lift into orbit atop the Falcon 9 rocket carrying crew supplies, equipment and scientific research to crewmembers living aboard the station.

The flight will deliver investigations and facilities that study neutron stars, osteoporosis, solar panels, tools for Earth-observation, and more. Here are some highlights of research that will be delivered to the orbiting laboratory:

New solar panels test concept for more efficient power source

Solar panels are an efficient way to generate power, but they can be delicate and large when used to power a spacecraft or satellites. They are often tightly stowed for launch and then must be unfolded when the spacecraft reaches orbit. The Roll-Out Solar Array (ROSA), is a solar panel concept that is lighter and stores more compactly for launch than the rigid solar panels currently in use. ROSA has solar cells on a flexible blanket and a framework that rolls out like a tape measure. The technology for ROSA is one of two new solar panel concepts that were developed by the Solar Electric Propulsion project, sponsored by NASA's Space Technology Mission Directorate.

The new solar panel concepts are intended to provide power to electric thrusters for use on NASA's future space vehicles for operations near the Moon and for missions to Mars and beyond. They might also be used to power future satellites in Earth orbit, including more powerful commercial communications satellites. The demonstration of the deployment of ROSA on the space station is sponsored by the Air Force Research Laboratory.

Investigation studies composition of neutron stars

Neutron stars, the glowing cinders left behind when massive stars explode as supernovas, are the densest objects in the universe, and contain exotic states of matter that are impossible to replicate in any ground lab. These stars are called "pulsars" because of the unique way they emit light - in a beam similar to a lighthouse beacon. As the star spins, the light sweeps past us, making it appear as if the star is pulsing. The Neutron Star Interior Composition Explorer (NICER) payload, affixed to the exterior of the space station, studies the physics of these stars, providing new insight into their nature and behavior.

Neutron stars emit X-ray radiation, enabling the NICER technology to observe and record information about its structure, dynamics and energetics. In addition to studying the matter within the neutron stars, the payload also includes a technology demonstration called the Station Explorer for X-ray Timing and Navigation Technology (SEXTANT), which will help researchers to develop a pulsar-based, space navigation system. Pulsar navigation could work similarly to GPS on Earth, providing precise position for spacecraft throughout the solar system.

Investigation studies effect of new drug on osteoporosis

When people and animals spend extended periods of time in space, they experience bone density loss, or osteoporosis. In-flight countermeasures, such as exercise, prevent it from getting worse, but there isn't a therapy on Earth or in space that can restore bone that is already lost. The Systemic Therapy of NELL-1 for osteoporosis (Rodent Research-5) investigation tests a new drug that can both rebuild bone and block further bone loss, improving health for crew members.

Exposure to microgravity creates a rapid change in bone health, similar to what happens in certain bone-wasting diseases, during extended bed rest and during the normal aging process. The results from this ISS National Laboratory-sponsored investigation build on previous research also supported by the National Institutes for Health and could lead to new drugs for treating bone density loss in millions of people on Earth.

Research seeks to understand the heart of the matter

Exposure to reduced gravity environments can result in cardiovascular changes such as fluid shifts, changes in total blood volume, heartbeat and heart rhythm irregularities, and diminished aerobic capacity. The Fruit Fly Lab-02 study will use the fruit fly (Drosophila melanogaster) to better understand the underlying mechanisms responsible for the adverse effects of prolonged exposure to microgravity on the heart. Flies are smaller, with a well-known genetic make-up, and very rapid aging that make them good models for studying heart function. This experiment will help to develop a microgravity heart model in the fruit fly. Such a model could significantly advance the study of spaceflight effects on the cardiovascular system and facilitate the development of countermeasures to prevent the adverse effects of space travel on astronauts.

Investigation shapes the way humans survive in space

Currently, the life-support systems aboard the space station require special equipment to separate liquids and gases. This technology utilizes rotating and moving parts that, if broken or otherwise compromised, could cause contamination aboard the station. The Capillary Structures investigation studies a new method of water recycling and carbon dioxide removal using structures designed in specific shapes to manage fluid and gas mixtures. As opposed to the expensive, machine-based processes currently in use aboard the station, the Capillary Structures equipment is made up of small, 3-D printed geometric shapes of varying sizes that clip into place.

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Using time lapse photography, on-ground research teams will observe how liquids evaporate from these capillary structures, testing the effectiveness of the varying parameters. Results from the investigation could lead to the development of new processes that are simple, trustworthy, and highly reliable in the case of an electrical failure or other malfunction.

Facility provides platform for Earth-observation tools

Orbiting approximately 250 miles above the Earth's surface, the space station provides views of the Earth below like no other location can provide. The Multiple User System for Earth Sensing (MUSES) facility, developed by Teledyne Brown Engineering, hosts Earth-viewing instruments such as high-resolution digital cameras, hyperspectral imagers, and provides precision pointing and other accommodations.

This National Lab-sponsored investigation can produce data to be used for maritime domain awareness, agricultural awareness, food security, disaster response, air quality, oil and gas exploration and fire detection.

These investigations will join many other investigations currently happening aboard the space station. Follow @ISS_Research for more information about the science happening on station.

Explore further: Image: Eleventh SpaceX commercial resupply mission to space station set for launch

The SpaceX Falcon 9 rocket, with the Dragon spacecraft onboard, is seen shortly after being raised vertical at Launch Complex 39A at NASA's Kennedy Space Center in Cape Canaveral, Florida, Thursday, June 1, 2017. Liftoff ...

A new NASA mission, the Neutron Star Interior Composition Explorer (NICER), is headed for the International Space Station next month to observe one of the strangest observable objects in the universe. Launching aboardSpaceX's ...

SpaceX is poised to blast off its next delivery of food, supplies and science experiments to the astronauts living at the International Space Station on Thursday.

SpaceX on Thursday will attempt its first-ever cargo delivery to the astronauts living in orbit using a vessel that has already flown to space once before, the California-based company said.

Nearly 50 years after British astrophysicist Jocelyn Bell discovered the existence of rapidly spinning neutron stars, NASA will launch the world's first mission devoted to studying these unusual objects.

A lightning strike near Cape Canaveral forced SpaceX to delay until Saturday its first-ever cargo delivery to the astronauts living in orbit using a vessel that has already flown to space once before, NASA said Thursday.

The moon hanging in the night sky sent Robert Hurt's mind into deep spaceto a region some 40 light years away, in fact, where seven Earth-sized planets crowded close to a dim, red sun.

A University of Oklahoma post-doctoral astrophysics researcher, Billy Quarles, has identified the possible compositions of the seven planets in the TRAPPIST-1 system. Using thousands of numerical simulations to identify the ...

Two teams of astronomers have harnessed the power of the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile to detect the prebiotic complex organic molecule methyl isocyanate in the multiple star system IRAS 16293-2422. ...

Astronomers from the University of Amsterdam have offered an explanation for the formation of the Trappist-1 planetary system. The system has seven planets as big as the Earth that orbit close to their star. The crux, according ...

NASA chose 12 new astronauts Wednesday from its biggest pool of applicants ever, hand-picking seven men and five women who could one day fly aboard the nation's next generation of spacecraft.

With high-pressure experiments at DESY's X-ray light source PETRA III and other facilities, a research team around Leonid Dubrovinsky from the University of Bayreuth has solved a long standing riddle in the analysis of meteorites ...

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US spook-sat buzzed the International Space Station The Register – The Register

Posted: at 10:47 pm

For a little while earlier this month, astronauts on the International Space Station had a spooky companion: a spy satellite that circled just outside its danger zone.

Dutch satellite-watcher Marco Langbroek (whose day job is at Leiden University) analysed the orbit of USA 276, a spy satellite owned by the US National Reconnaissance Office and hoisted aboard the May 1 SpaceX mission.

It's something of a vindication for the (now) amateur astronomer, since in late May he speculated that a close approach was feasible.

Just such a pass came to pass happened on June 3, and after doing the mathematics on the orbit, Langbroek reckons the spy-sat came within 6.4 km of the ISS with a 2 km error margin.

(That margin is so large, he explains, because TLE, the two-line element set that describes a satellite's orbit, has a typical 1 km positional accuracy.)

For a few of the approaches Langbroek analysed, the satellite circled the ISS in two plans both laterally (cross-track) and along-track.

USA 276 circling the ISS, along-track. Plot by Langbroek

As he explains, the danger zone the point at which an avoidance manoeuvre is required is in a box 4 x 4 x 10 km around the space station, and US 276 stayed just outside that box.

While Langbroek refrains from speculating on why the NRO would take the satellite so close to the ISS, it's clear that there was no hope of hiding its position, because of the satellite's brightness. USA 276 is shown in the frame below, captured from a video made by Langbroek.

Too bright to hide: USA 276 (circled) recorded from Earth by Langbroek

While USA 276 remained just outside the safety concern box, it is weird to have your just launched classified payload pass so close (6.4 2 km) to a high profile, crewed object like the ISS, he writes.

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Space Station Welcomes 1st Returning Vehicle Since Space Shuttle – NBC Connecticut

Posted: at 10:47 pm

WATCH LIVE

In this frame from NASA TV, a SpaceX Dragon arrives at the International Space Station on Monday, June 5, 2017, making an unprecedented second trip to the orbiting outpost. The Dragon supply ship, recycled following a 2014 flight, was launched from Florida on Saturday.

The International Space Station welcomed its first returning vehicle in years Monday a SpaceX Dragon capsule making its second delivery.

Space shuttle Atlantis was the last repeat visitor six years ago. It's now a museum relic at NASA's Kennedy Space Center.

NASA astronaut Jack Fischer noted "the special significance" of SpaceX's recycling effort as soon as he caught the Dragon supply ship with the station's big robot arm.

"That's right, it's flying its second mission," Fischer said. "We have a new generation of vehicles now led by commercial partners like SpaceX."

SpaceX is working to reuse as many parts of its rockets and spacecraft as possible to slash launch costs. The California-based company launched its first recycled booster with a satellite in March; another will fly in a few weeks.

The Dragon pulled up two days after launching from Florida. This same capsule dropped off a shipment in 2014. SpaceX refurbished it for an unprecedented second trip, keeping the hull, thrusters and most other parts but replacing the heat shield and parachutes.

Until their retirement in 2011, NASA's shuttles made multiple flights to the space station.

This new 6,000-pound shipment includes live lab animals: 40 mice, 400 adult fruit flies and 2,000 fruit fly eggs that should hatch any day. The mice are part of a bone loss study, while the flies are flying so researchers can study their hearts in weightlessness. Even more than mice and rats, the hearts of fruit flies are similar in many ways to the human heart, beating at about the same rate, for instance.

Some of these animals will return to Earth aboard the Dragon in about a month.

SpaceX officials anticipate using Dragon capsules as many as three times.

"It's starting to feel kinda normal to reuse rockets. Good. That's how it is for cars & airplanes and how it should be for rockets," SpaceX founder and chief executive Elon Musk said via Twitter following Saturday's liftoff of the Dragon and landing of the Falcon rocket's first stage.

Musk said the latest touchdown was "pretty much dead center" at the SpaceX landing zone at Cape Canaveral Air Force Station. Liftoff occurred next door at Kennedy Space Center.

The Dragon is the only station supply ship capable of returning items, like science samples. On Sunday, an Orbital ATK cargo ship named in honor of the late John Glenn departed the station. It will remain in orbit a week before burning up in the atmosphere upon re-entry. Glenn, the first American to orbit the world, died in December at age 95.

"Godspeed & fair winds S.S. John Glenn," Fischer wrote in a tweet.

Published at 12:10 PM EDT on Jun 5, 2017 | Updated at 12:21 PM EDT on Jun 5, 2017

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SpaceX Dragon Capsule Makes History with 1st Repeat Delivery to Space Station – Space.com

Posted: at 10:47 pm

A reused SpaceX Dragon cargo ship arrived at the International Space Station today (June 5), becoming the first privately built spacecraft to make a repeat delivery to the orbiting laboratory.

The Dragon capsule, which lifted off on Saturday(June 3) from NASA's Kennedy Space Center in Florida, is packed with nearly 6,000 lbs. (2,700 kilograms) of supplies and science experiments for the Expedition 52 and 53 astronauts.

Inside the space station's Cupola module, NASA astronauts Peggy Whitson and Jack Fischer remotely operated the station's Canadarm2 robotic arm to seize the spacecraft at 9:51 a.m. EDT (1351 GMT). [In Photos: SpaceX's 1st Reused Dragon Spacecraft]

SpaceX's 11th cargo resupply mission arrives at the International Space Station, where NASA astronaut Peggy Whitson and Jack Fischer operated the robotic Canadarm2 to grapple the spacecraft.

With the Dragon captured, NASA's mission controllers in Houston will operate the robotic arm to install the spacecraft at its docking port on the space station's Harmony module, where crewmembers will then unload the cargo.

This is the 11th mission under SpaceX's commercial cargo contract with NASA. In 2014, SpaceX flew the same Dragon capsule for itsfourth cargo mission. After the Dragon splashed down in the Pacific Ocean, SpaceX retrieved it and refurbished it so it could be reused.

"These people have supplied us with a vast amount of science and supplies, really fuel for the engine and innovation we get to call home, the International Space Station," Fischer said shortly after capture was confirmed. "We also want to note the special significance of the SpaceX-11, which if we follow the naming convention of the artist Prince, could be called the SpaceX formerly known as SpaceX-4."

SpaceX's 11th cargo resupply mission arrives at the International Space Station.

Along with food, water and other essentials for the crewmembers, the Dragon contains several thousand pounds of research equipment and even some live cargo, including 40 mice and thousands of fruit flies. The mice will be testing out a new drug for osteoporosis, or loss of bone density, while the fruit flies will help scientists study the effects of spaceflight on the cardiovascular system.

Other equipment onboard includes a new, more compact and efficient solar panel called the Roll Out Solar Array (ROSA), and an experiment that will study a new type of intergalactic GPS system called theNeutron star Interior Composition ExploreR(NICER).

This SpaceX Dragon will stay at the station for about a month and is scheduled to splash down in the Pacific Ocean in early July, returning with about 3,400 lbs. (1,500 kg) of science, hardware and other supplies.

Email Hanneke Weitering at hweitering@space.com or follow her @hannekescience. Follow us @Spacedotcom, Facebookand Google+. Original article on Space.com.

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Can Humans Live On Mars? Colonist Might Find Planet Deadly For The Immune System – International Business Times

Posted: at 10:47 pm

If humans start a colony on Mars and live there for generations, will their descendants ever be able to visit Earth? Its possible that returning to their planet of origin would kill them.

Long-term habitation on another planet or in a traveling spaceship might pose a problem to human evolution because space is devoid of the germs that keep our immune systems firing, and without regular exercise, the bodys defenses could atrophy or even disappear over many generations. Scientists will have to figure out exactly what happens to the immune system when an astronaut goes into space before the travelers go on any far-reaching missions. Those missions could be just beyond the horizonas leaders like SpaceX CEO Elon Musk push for exploration and colonization of other planets, space agencies learn how to farm in microgravity and more advances are made in rocket technology.

They are getting closer to an answer all the time. NASA has a team of immunologists studying how astronaut immune systems react while the crew stays aboard the International Space Station, in orbit around Earth. Their project is called Functional Immune and scientists already have observed changes taking place in that microgravity environment.

Read: Could Humans Living on Mars Become a New Species?

Were seeing alterations in the numbers of immune cells in the blood, reduced function in some of these populations and changes in the proteins cells make, immunologistHawley Kunzsaid. Your immune system is relatively stable, so when you start seeing changes, it is often indicative of the presence of environmental stressors with increased clinical risk.

Although they are not making the astronauts sick, latent viruses are reactivating, NASA has explained, and that happens when the immune system is weakened in some way. As the space agency better understands what is going on, it may be able to develop interventions.

Until scientists solve the puzzle, living away from Earth in the long-term could be a dangerous business. Evolutionary biologist and science writer Scott Solomon said when an organ or other body part is not being used, the body will redirect energy from it toward something more crucial, which explains why, for example, organisms living in dark caves may not have eyes.

Our immune systems do require a lot of energy to maintain, he told International Business Times. And that suggests that our immune systems would start to break down, to atrophy.

A colony on Mars would have to have all of the comforts of home including germs, if space settlers don't want their immune systems to atrophy. Photo: Don Davis/NASA

It might seem impossible that we wouldnt be using our immune systems, but they may not have anything to do aboard a far-reaching spaceship or in a domed habitat on Mars. NASA itself has explained that astronauts are vaccinated ahead of time and aboard the ISS their food and drink is pasteurized and filters clear the air of bacteria and viruses. That doesnt mimic the natural environment on Earth.

We evolved to exist in a sea of microbes, and we evolved an immune system to mitigate that, NASA immunologist Brian Crucian said. Changes in physiology we are seeing on station have the potential to be greater on the way to Mars.

And even if we could leave a space habitat and breathe out in the open on the Mars surface, unless there is life on that planet, there are no germs in the air to make us sick.

As far as we know, the only microbes on any other planet would be the ones that we bring with us, said Solomon, a professor at Rice University. But there may not be too many of those vaccinations would knock out infectious diseases before boarding, and the transit time between Earth and Mars could be like a quarantine period that illnesses would not survive.

Although new infectious diseases develop on Earth all the time, that may not be the case on another planet if there is no livestock. Often illnesses from animals jump to humans and create outbreaks, but there are no native animals on Mars, as far as we know. And there are alternatives to bringing livestock like cows and chickens: Insects other than mosquitoes are a viable option, Solomon said.

Insects are at least as, if not more, nutritious and require a lot less resources to raise than mammals and birds, he told IBT.

Read: Cancer Risk from Space Radiation for Astronauts Could Be Double

If all those factors, from sterile air to clean livestock, came together, they would create conditions under which human immune systems might atrophy, or even be phased out through natural evolution over the generations of space pioneers. But then that community would be doomed to stay on Mars, isolated from Earthlings. Solomon called it an artificially induced separation because of the risk of an infection passing to immune system-less Martians,killing them.

Thats a legitimate possibility. Similar things have happened on Earth, such as when European settlers first encountered Native Americans and transmitted the smallpox virus, which killed many of those indigenous people because their immune systems were not prepared to fight off the European pathogens.

If the Earth humans and the Mars humans no longer have contact and are no longer exchanging genetic material they will begin to evolve separately and eventually may become different species.

Theres reason to believe that could happen much more quickly on Mars or another planet than on Earth, Solomon said.

In that case, whether space explorers finally find living creatures on other planets or not, the colonists on Mars would become actual alien life.

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Feast of the Strawberry Moon returns this weekend – Grand Haven Tribune

Posted: at 10:47 pm

The historical re-enactment festival was sponsored by the Tri-Cities Historical Museum for more than a decade. After the museum relinquished control of the festival, the newly formed West Michigan Historical Alliance took over.

The Feast of the Strawberry Moon runs from 9 a.m. to 5 p.m. Saturday and from 9 a.m. to 4 p.m. Sunday. Admission is $5 per person or $15 per family.

The alliances executive director, Chris Hornby, said this year they want to make the festival more period correct to the 1800s.While she says they arent changing too much, there will be different entertainment, along with additions in vendors and artisans.

As far as the essence of the event, it will be mostly the same, she said.

Hornby said the alliances biggest challenge in taking over as host of the feast was getting the word out that the event was still happening.

The feast typically draws about 250 re-enactors, entertainers, demonstrators and period vendors to provide the experience of the 18th century to thousands of public visitors each June.The festival explores the history of the Native American culture, the French exploration period, English colonization and American unification of West Michigan.

Hornby also noted their efforts to keep the Feast of the Strawberry Moon family-oriented.

The festival will include activities such as candle dipping, tomahawk throwing, jugglers, music, comedy and military demonstrations.

A new element for this years festival is a Kids Day on Friday, when more than 150 homeschooled and Griffin Elementary School students will experience the feast and learn about life in the 1800s.

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How genetic engineering could boost biofuel production in Africa and Latin America – Genetic Literacy Project

Posted: at 10:46 pm

Bioenergy production techniques that are already available could be used to supply up to 30 percent of the worlds energy by 2050, according to a 2015 report by The Scientific Committee on Problems of the Environment (SCOPE), a global network of scientists from 24 countries that reviews scientific knowledge on the environment.

To find out why scientists are so optimistic about biofuel production in the developing world, SciDev.Net spoke with Glaucia Mendes Souza, researcher at the Chemistry Institute of the University of So Paulo.

Souza is also coordinator of the Bioenergy Research Program at the Brazilian research foundation FAPESP, and co-editor of the report.

What is the potential for expanding biofuel production in Latin America and Africa?

Huge! There are at least 500 million hectares of land available for biofuel production around the world. Much of that is in Latin America and sub-Saharan Africa, and is currently being used for low-intensity grazing.

What are the main scientific and technological advances related to biofuel production in Brazil?

Thanks to the ethanol programme and research carried out by the private sector, as well as public research entities, Brazil has obtained genetically improved varieties of sugar cane and managed to increase its productivity from 49 tonnes per hectare in 1970 to 85 tons per hectare in 2010.

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Biology professor: Trump’s presidency will permanently alter human genetics – TheBlaze.com

Posted: at 10:46 pm

A biology professor at the University of Washington in Seattle believes the stress caused by President Donald Trumps time in office will lead to a permanent change in human genetics.

Peter Ward, a professor who works in the earth and space sciences department of UWs College of the Environment, offered his bizarre prediction to Gizmodo earlier this weekwhen the publication asked a handful of evolutionary biologists, Can superhuman mutants be living among us?

Ward argued that significant traumas like abuse or military combat cancause permanent change to the human genome. He went on to suggest Trumps presidency is akin to those traumas and will have an evolutionary consequence on humanity.

Were finding more and more that, for instance, people who have gone through combat, or women who have been abused when you have these horrendous episodes in life, it causes permanent change, which is then passed on to your kids, he said. These are actual genetic shifts that are taking place within people.

Those shifts, Ward contended, can cause huge evolutionary change.

He added: On a larger scale, the amount of stress that Americans are going through now, because of Trump there is going to be an evolutionary consequence.

Earlier in his statement, the professor also predicted the U.S. military willmanipulate genetics to create some sort of superhuman soldiers.

A soldier whos much harder to bleed to death, or a soldier that doesnt need to drink as much water, or doesnt need to eat for five or six days, or doesnt need to sleep any one of these things would be an enormous advantage in warfare, he said.

This isnt the first time Ward has raised eyebrows for his ideas.

In his 2009 book The Medea Hypothesis: Is Life on Earth Ultimately Self-Destructive? Wardargued that life on earth will cause its own destruction in order to save the planet.

He argued at the time, The Christian Science Monitor reported, that life will self-destruct prematurely, many years before the sun, which he believes will begin to expand in roughly one billion years, burns the biosphere away.

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Aggro fruit flies may hold genetic keys to human mental illness – Cosmos

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Fruit flies show some links between genetics and behaviour that are surprisingly similar to those in humans.

Susumu Nishinaga / Getty

Scientists are creeping closer to the genetic mechanisms that underpin schizophrenia and bipolar disorder through inducing aggression in fruit flies.

A team led by Liesbeth Zwarts of Belgiums University of Leuven are studying how altered levels of a protein associated with a gene thought to be linked to mental illness affects behaviour.

In humans, mutations of the gene known as PRODH, situated on chromosome 22, has been associated with the development of schizophrenia, bipolar disorder and some other, rarer, neurological conditions. Its influence has been confirmed in mouse studies, but the precise mechanisms by which it works have remained little understood.

To try to throw some light on the subject, Zwarts and her colleagues looked at the role of an almost identical fruit fly gene, known as slgA.

In a previous study, in 2008, the team had established that neutralising slgA induced aggressive behaviour in fruit flies. Manipulating levels and different proteins expressed by the gene (known as isoforms) thus made for a promising avenue into understanding the functions that underpin the sort of aggression that often typifies mental illness in humans.

Reporting in the journal Disease Models and Mechanisms, the scientists reveal that although slgA is found throughout the fruit fly brain, only the slgA found in an area known as the lateral neurons ventral (LNv) produced aggression when manipulated.

The results suggest that particular behaviours maybe linked to protein components in specific cell types, and that disruption to the metabolism of those specific types may be what catalyses abnormal behaviour.

Interestingly, the lateral neurons ventral are also known to play a key role in regulating circadian rhythms, which determine the sleep/wake cycle in flies and humans both.

Disruption to circadian rhythms has previously been identified as a driver for neurological disorders. However, Zwarts and her colleagues established that changing the activity of the slgA gene did not affect the cells circadian regulation.

Thus, the lateral neurons ventral may affect mental health in at least two although separate ways.

The team plans to continue its investigation, using the fruit fly model to assist in determining why current treatments for neuropsychiatric disorders in humans dont always work.

Once we have demonstrated the direct relevance of our Drosophila models for psychiatric disorders, we aim to pursue drug screens, says team member Patrick Callaerts.

In that sense our work may contribute to defining alternative treatment options.

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Surprising Find: Ancient Mummy DNA Sequenced in First – Live Science

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Scientists sequenced DNA from mummies from the settlement of Abusir el-Meleq, south of Cairo, and were buried between 1380 B.C. and A.D. 425.

For the first time, researchers have successfully sequenced the DNA from Egyptian mummies. The findings reveal that these ancient people were more genetically similar to populations living in the eastern Mediterranean a region that today includes Syria, Lebanon, Israel, Jordan and Iraq than people living in modern-day Egypt.

"We were excited to have at hand the first genome-wide data of ancient Egyptian mummies," said Stephan Schiffels, leader of the Population Genetics Group at the Max Planck Institute for the Science of Human History, in Jena, Germany. [24 Amazing Archaeological Discoveries]

Schiffels and a team of scientists from Poland, Germany, England and Australia led by Johannes Krause, a geneticist also at the Max Planck Institute for the Science of Human History, published their research in the May 30 issue of the journal Nature Communications.

Worldwide, the remains of thousands of mummies from ancient Egypt have been excavated, but obtaining intact, undamaged DNA from the bodies has proved challenging.

"Researchers were generally skeptical about DNA preservation in Egyptian mummies, due to the hot climate, the high humidity levels in tombs and some of the chemicals used during mummification, which are all factors that make it hard for DNA to survive for such a long time," Schiffels told Live Science.

Map of Egypt depicting the location of the archaeological site Abusir-el Meleq (marked by the orange "X") and the location of the modern Egyptian samples (marked by the orange circles).

Other research teams made at least two previous attempts to sequence DNA from mummies, but those efforts were met with intense skepticism. The first undertaking occurred in 1985 and was later shown to be flawed, because the samples had become contaminated with modern DNA. The second analysis, published in 2010, focused on King Tutankhamun's family, but it could not satisfy the critics either. Both studies used a technique called polymerase chain reaction (PCR), which can hone in on specific fragments of genetic information but can't distinguish ancient DNA from modern DNA, nor differentiate human DNA from other types that may be present.

In this latest study, Krause and his colleagues used a newer technique called next-generation sequencing, which can extract human DNA from other types and can tell whether a genetic fragment is very old or suspiciously new (an indication that it might be modern).

The scientists focused their efforts on the heads of 151 mummified individuals who lived in the settlement of Abusir el-Meleq, south of Cairo, and were buried between 1380 B.C. and A.D. 425.

To reduce the risk of contamination, the researchers extracted the DNA inside a laboratory clean room. There, they irradiated the surfaces of bone and soft tissue for 60 minutes using ultraviolet radiation, which destroyed any modern DNA. The scientists then removed samples from inside soft tissue, skull bones and the tooth pulp. [Photos: 1,700-Year-Old Egyptian Mummy Revealed]

Following these and numerous other rigorous steps, the researchers found that the soft tissues had no viable DNA. However, the bone and tooth samples for 90 individuals contained ample amounts of DNA from mitochondria, the organelles inside a cell that convert oxygen and nutrients into energy. Mitochondrial DNA is passed down from mother to child and so contains genetic information from only the mother's side of the family.

To get a more complete picture of a person's genetic history, the researchers needed DNA from the cell's nucleus, which contains DNA from the father's side of the family as well as the mother's. But that DNA was very poorly preserved, Schiffels said.

"We were only able to generate three nuclear genomic data sets," he said.

After extracting the DNA, the researchers enriched it and made copies for analysis. They then compared it with the DNA of other populations, both ancient and modern, that lived in Egypt and Ethiopia.

The researchers found that over the 1,300-year time span, the genetics of the people in the sample remained consistent a remarkable finding, the researchers said, because ancient Egypt had been conquered several times in those years, including by the Greeks and Romans, and through it all, served as a trading crossroads for many different people.

Yet when the scientists compared their samples to genetic data from modern-day Egyptians, they found a difference. The DNA from the ancient Egyptians contained little DNA from sub-Saharan Africa, yet 15 percent to 20 percent of mitochondrial DNA in modern Egyptians shows a sub-Saharan ancestry, the researchers said.

Schiffels said the scientists can only speculate on why the genetic changes showed up later. "One possible cause could be increased mobility down the Nile and increased long-distance commerce between sub-Saharan Africa and Egypt," he said.

These changes could have been related to slave trading, which reached its height in the 19th century, he said.

He added that the team hopes to continue building on this research by analyzing more mummies from more time periods and more sites in Egypt.

Original article on Live Science.

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