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An elephant was stranded nine miles out to sea. Then the Sri Lankan Navy arrived. – Washington Post
Posted: July 14, 2017 at 4:44 am
The elephant was spotted during a routine patrol after it had been swept away by strong currents. (Sri Lanka Navy)
Of all the animals in the world to be stranded out in the ocean, few are more prepared to survive than an elephant, with its natural buoyancy and built-in snorkel. But even strong-willed elephants need a hand, and perhaps a fleet of naval vessels.
Dramatic footage from a 12-hour operation by the Sri Lankan Navy early Tuesday morning shows a lumbering elephant desperately staying afloat nine miles from the coast. Crashing waves threaten to submerge it, forcing the elephant to draw oxygen from its upturned trunk.
The animal was first spotted by a Sri Lankan Navy boat on a routine patrol off thenortheastern coastal town ofKokilai. The rescue effort swelled to three more vessels and a team of navy divers.
Using ropes and guidance provided by officials from the Department of Wildlife, the team towed the elephant back to land, where it was handed over to officials from the wildlife office, the Sri Lankan Navy said in a statement.
[Watch female elephants stage a dramatic rescue of a drowning baby elephant]
Chaminda Walakuluge, a Sri Lankan Navy spokesman, told Agence France-Presse the elephant was likely caught in a riptide while crossing the Kokkilai lagoon, a coastal body of water wedged into jungle on either side.
They usually wade through shallow waters or even swim across take a shortcut. It is a miraculous escape for the elephant,Walakuluge told the AFP.
Joyce Poole, co-founder of the Elephant Voices conservation group, told The Washington Post in an email that elephants are considered the best swimmers of any land mammal, excluding trained human swimmers.
Poole said the elephant in the video looked tired, presumably from keeping afloat for an unknown period of time. Their swimming talents leading to danger is not new, she said.
I well remember flying in the early 1990s over barren and deserted islands off the Kenyan coast near the Somali border and seeing the bones of elephants that had been killed there, Poole said. Clearly they swam from the mainland to the island only to meet their deaths there.
The subspecies of elephants in Sri Lanka, commonly known as Asian or Indian elephants, weigh between 4,400 and 12,000 pounds and stand as high as 10 feet at their shoulder.
Only 2,500 to 4,000 have survived after deforestation and development disrupted migration patterns, a drop of 65 percent in Sri Lanka since the beginning of the 19th century, according to the World Wildlife Fund. Elephants there have been forced from theirhome on the southern tip of the tear-shaped island due to human activity.
Killing a Sri Lankan elephant is punishable by death, the WWF noted. But no word on what reward there might be for saving one.
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NASA Just Announced They Can’t Afford to Get Humans to Mars – Futurism
Posted: at 4:44 am
In Brief NASA admitted today that under the current budget they cannot afford to get humans to Mars. NASA's next steps will depend on its funding, but now more than ever, the future of Mars colonization rests in the hands of commercial space companies. Budget Bummer
NASA has been talking about getting humans to Mars for years, and continues to provide updatedplans for getting there. Unfortunately, though, NASAs chief of human spaceflight, William H. Gerstenmaier, just announced that the agency cant achieve the Mars goal on its current budget.
I cant put a date on humans on Mars, and the reason really is the other piece is, at the budget levels we described, this roughly 2 percent increase, we dont have the surface systems available for Mars, Gerstenmaier said during a propulsion meeting of the American Institute for Aeronautics and Astronautics on Wednesday. And that entry, descent, and landing is a huge challenge for us for Mars.
Essentially, the SLS rocket and Orion craft have cost the agency a lot. As a result, NASA hasnt even been able to begin designing vehicles to land on Mars or ascend from the surface.
NASAs next moves will depend on funding. Gerstenmaier indicated the agency might be interested in a Moon exploration mission one that is more extensive than the current plan to build the Deep Space Gateway in the Moons orbit. Beyond just being a launching pad for further space exploration, the gateway could support an extensive moon surface program, says Gerstenmaier.
Fortunately for our Red Planet dreams, it isnt just up to NASA. Getting humans to Mars is a team effort. Agencies like NASA are really at the mercy of political moods and budgetary restraints, so they need to do as much as they can with what resources are there. One way they can maximize impact is to partner with private companies.
This month Elon Musk announcedwe might be getting an update about the SpaceX Mars mission in September at the International Astronautical Congress (IAC) in Australia. For now, though, SpaceX has set a deadline of 2018 for an unmanned Mars mission and 2025 for a manned mission. Both Boeing and Blue Origin are also planning to put humans on Mars. It may turn out that the we in Vice President Pences remarks about putting American boots on Mars is the larger American we, and not the government or NASA.
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Microsoft Is Bringing Affordable Broadband Internet to Rural America – Futurism
Posted: at 4:43 am
In Brief Microsoft has launched its Rural Airband Initiative, which aims to bring internet access to remotel areas in 12 U.S. states. The TV White Spaces project will provide 2 million rural Americans with internet that is a fifth of the cost of fiber cable-based internet and half the cost of 4G networks. Going the Extra Mile
At the historic Willard Hotel where a little over 100 years ago Alexander Graham Bell demoed the coast-to-coast telephone call, Microsoft announced on Monday its latest effort to bring internet access to American rural areas. The project makes use ofunused television broadcast channels which are called white spaces.
Back in 2010, the U.S. Federal Communications Commission (FCC) adopted rules that opened up TV white spaces for broadband use. Microsoft itself has considerable experience with this spectrum, having deployed 20 TV white spaces projects in 17 countries that have served 185,000 users, Brad Smith, the companys president, wrote in a press release.
Now, through Microsofts Rural Airband Initiative, the tech giant aims to open up broadband access to 2 million people in rural areas in America by 2022. Microsoft has 12 partners working in 12 states including Arizona, Kansas, New York, and Virginia for its TV White Spaces projects, which will be up and running inthe next 12 months.
This project will provide rural Americans with internet that is a fifth of the cost of fiber cable-based internet and about half the cost of 4G networks.
After the United Nations declared internet access as a basic human right, a number of tech industry heavyweights have stepped up to the task of bringing internet connectivity to the worlds remote areas. There are several othersimilar initiatives to bring internet access to all of North America, including a couple in New York and Canada.
Social media giant Facebook has been working on its Aquila project for the past two years. The idea is to beam internet to far flung areas using Facebooks solar-powered Aquila drones, which recently completeda second successful test flight.
Elon Musks SpaceX is approaching the problem with a different strategy. The plan is to improve internet access around the world by launching 4,000 satellites in orbit. SpaceX completed its applications to the FCC for this global internet network back in November 2016. This plan seems to have inspired satellite internet startup OneWebbacked by Virgin Groups Richard Branson, Qualcomm, and Airbus which would launch 720 satellites to build a global wireless internet network.
It seems unthinkable that in such a day and age, where internet is available even through your smartphones and wearable gadgets, there are still 4 billion people wholack such access. Hopefully, efforts likeMicrosofts will soon bridge this information divide.
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Researchers Refute Study That Claims CRISPR Causes Unexpected Mutations – Futurism
Posted: at 4:43 am
In BriefA study published earlier this year warned scientists ofpotential complications with CRISPR/Cas9, but after review byresearchers at another institution, the findings of that study arebeing brought into question. It remains to be seen whether theoriginal study will be corrected or retracted, but this developmenthighlights the importance of peer review in science. Wrongfully Accused?
A study published earlier this year warned scientists of potential complications in their work with CRISPR/Cas9, but after review by researchers at another institution, the findings of that study are being brought into question. The original paper was publishedby a team at Columbia University Medical Center (CUMC) in May of this year in the journal Nature Methods.
In the studys original press release, co-author Stephen Tsang said: We feel its critical that the scientific community consider the potential hazards of all off-target mutations caused by CRISPR, including single nucleotide mutations and mutations in non-coding regions of the genome. The researchers had sequenced the genomes of mice whose genes had previously been editing using CRISPR in an attempt to cure their blindness. The genomes revealed there were 1,500 single-nucleotide mutations and over 100 larger deletions,= and/or insertions in two of the mice which had been modified using the gene-editing technique.
In their study, the researchers attributed these genetic anomalies to the use of CRISPR but a team of researchers from Harvard University and MIT have reviewed the paper and are challenging that attribution. In a paper published in bioRxiv a pre-print server for biology research which is not a peer reviewed journal the researchers pointed out the CUMC study had several serious problems. The most glaring of which, the Harvard and MIT researchers argue, is that the mutations found in the mice that were attributed to CRISPR were more likely than not already present in those mice before they were exposed to the gene-editing technique.
The third mouse whose genome had been edited with CRISPR did not demonstrate the mutations, and was also not as genetically similar as the two mice who did. The Harvard and MIT research team argue that this supports the theory that the mutations in the pair of mice were not caused by CRISPR. It should be noted that this criticism comes from a small study that was not peer reviewed.
The teams goal in refuting the research is to make sure the rest of the scientific community is reminded of the lasting impact claims that are not well supported by data can have. Given these substantial issues, we urge the authors to revise or re-state the original conclusions of their published work so as to avoid leaving misleading and unsupported statements to persist in the literature, the team explained in their paper.
The peer review process is essential to scientific disciplines other than biology and genetics, of course. Whether researchers are making claims about climate change, artificial intelligence, or medical treatments, rigorous review of their methods, data, and analysis by other scientists who are doing similar work is essential. This process ensures that the research and the way it is presented is accurate, of high quality, and will be useful not only to the scientific community, but to the general public.
For teams who have spent months if not years heavily focused on a single study, trial, or data set, it can be very easy to lose sight of the bigger picture. Peer review offers research teams the chance to address inconsistencies, data that doesnt add up, and conclusions that make assumptions or inferences that arent supported by the data.
While there have certainly been instances where teams have intentionally fabricated data in order to mislead their peers and the public, most members of the scientific community do not mislead intentionally. But thats why the peer review process is so important. It remains to be seen if the team at CUMC plans to revisit, or possible retract, their paper in light of the response.
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An FDA Panel Just Approved A Treatment That Genetically Alters Your Own Cells – Futurism
Posted: at 4:43 am
FDA Panel Recommends Approval
Today a Food and Drug Administration (FDA) panel unanimously recommended that the agency approve atreatment that genetically alters a patients own cells to fight leukemia. If the agency does make the approval, the first-ever such treatment will be the start of the living drug era of human medicine, in which we harness technology to boost our natural immune system and improve its ability to master formerly unbeatable diseases.
While this gene therapy treatment for leukemia, known as CTL019, will be the first to reach the market, there are more on the way. Treatments for an aggressive type of brain tumor, as well as myeloma and other varieties of leukemia, are also in development.
This technique is a true example of personalized medicine: a unique version of the treatment must be created for every patient from their own cells. After the cells are removed by medical personnel, they are frozen, shipped to Novartis (the therapys maker), processed, refrozen, and shipped back to the medical center.
Assuming this treatment is approved, it will be a first for the FDA. Though the approval wouldnt necessarily be surprising in light of theresults of the trials, which were stunning: patients facing death after all other treatments failed who receivedjust a single dose of the gene therapy experiencedlong remissions that could, intime, prove curative. The FDA panel therefore recommended approval for treatment of relapsed or treatment-resistant B-cell acute lymphoblastic leukemia in children and young adults ages 3 to 25.
One attendee of the panels meeting was thefirst patient from the trials, Emily Whitehead, age 12. She almost died as a result of leukemia, which was considered fatal until she was treated at age 6. Since that time she has been cancer free. We believe that when this treatment is approved it will save thousands of childrens lives around the world, Tom Whitehead, Emilys father, told the panel, according to The New York Times. I hope that someday all of you on the advisory committee can tell your families for generations that you were part of the process that ended the use of toxic treatments like chemotherapy and radiation as standard treatment, and turned blood cancers into a treatable disease that even after relapse most people survive.
Researchers at the University of Pennsylvania developed the treatment, which is now licensed to Novartis. The disease its meant to treat, however, is rare affecting only about 5,000 people annually. Around 60 percent of them are young adults and children. Standard treatments can cure most children, but approximately 15 percent of patients, like Emily, do not respond to treatment or experience relapses.
Novartis will limit the use of CTL019 initially because the treatment process is complex and managing side effects demands expert care. Therefore, only about 30 or 35 medical centers will have access to the treatment upon its release. Furthermore, staffat thosecenters will receive special training and approval to administer it, according to The New York Times. Although analysts predict that the cost of these unique treatments may exceed $300,000, a Novartis spokesman declined to specify a price whenNYTinquired.
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4 Chinese Students to Survive in ‘Space Station’ in Beijing For 200 Days – NextShark
Posted: July 13, 2017 at 6:49 am
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Four willing students in China have signed up to stay within a self-sustaining ecosystem inside two bunkers that simulate life inside a space station for 200 days.
Sealed from the outside world, the participating students from the Beijing University of Aeronautics and Astronautics will be involved in a lot of recycling and reusing items ranging from plant cuttings to urine.
The participants entered the Lunar Palace-1 on Sunday and will be living self-sufficiently throughout the duration of the program.According to Reuters, the simulation is aimed to help the students find out more about the conditions of living in a space station on another planet.
The program is part of a bigger project that will be creating a self-sustaining ecosystem that may, in the near future, provide humans the necessities to survive.
The students explained that they happily accepted the challenge as it somehow gets them closer to becoming real astronauts.
Ill get so much out of this, Liu Guanghui, a PhD student, was quoted as saying. Its truly a different life experience.
According to Beijing University of Aeronautics and Astronautics professor and project head Liu Hong, they have carefully calculated every necessary component for human survival.
Weve designed it so the oxygen (produced by plants at the station) is exactly enough to satisfy the humans, the animals, and the organisms that break down the waste materials, she said.
She pointed out that aside from the physical needs, the experiment is also keen on studying the mental impact of being confined in such a limited space for a certain duration of time.
They can become a bit depressed, Liu said. If you spend a long time in this type of environment it can create some psychological problems.
Liu Hui, a student, and participant from the programs initial 60-day experiment at Lunar Palace-1,has reported that she sometimes felt a bit low after working for a day.
As an adjustment, the projects research team designed a specific set of daily tasks for the students to avoid stressing them out.
Part of the new experiment will also test the group how their bodies will react to living a for 200 days without exposure to sunlight.
We did this experiment with animals so we want to see how much impact it will have on people, the professor said.
The Chinese space program, which has been expanding in recent years, is set to probe to the dark side of the moon by next year, with the plan of putting astronauts on the moon by 2036.
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NASA: Understanding Fungi is Necessary to Keep Humans Safe While Exploring Space – Futurism
Posted: at 6:49 am
In Brief NASA researchers have discovered that human presence inside a closed environment (such as a space station or off-world habitat) changes its mycobiome. This research will help develop health and safety protocols for Mars exploration and colonization. Cohabitating With Fungi
Research by NASA has proventhat the presence of humans inside the closed spacesneeded to explore other planets correlates with changes in the mycobiomes and fungal communities that grow inside the habitats. The research, published this week in the journalMicrobiome, is critical to space exploration and the colonization of new planets because it will help determine which health and maintenance measures are needed for human survival in closed habitats.Click to View Full Infographic
Senior Research Scientist Dr. Kasthuri Venkateswaran of the NASA Jet Propulsion Laboratory (JPL), Caltech, who is the studys corresponding author, told Phys.org: Characterizing and understanding possible changes to, and survival of, fungal species in environments like the ILMAH is of high importance since fungi are not only potentially hazardous to the inhabitants but could also deteriorate the habitats themselves.
The team discovered that the presence of certain varieties of fungi including pathogens that cause asthma, allergies, and skin infections increased when humans were also present inside the Inflatable Lunar/Mars Analog Habitat (ILMAH). The stress of long-term stays in closed habitats might produce decreased immune responses in humans, rendering them more vulnerable to opportunistic fungi. Knowing how fungal communities react when humans are present is critical for the maintenance of off-world habitats, which demand appropriate health and safety countermeasures.
The goal of the ILMAH study was to understand how humans change psychologically, physiologically, and behaviorally in confined environments. For 30 days, three student crews were housed inside the ILMAH; completely isolated from the outside world except for exchanging filtered air. The researchers collected and characterized samples of fungal species to determine which were present and how the mycobiome changed during the 30-day period. Crew members cleaned the habitat and collected surface samples weekly.
The researchers established that the mycobiomes diversity and the sizes of various fungal populations fluctuated during the experiment. For example, populations of Cladosporium cladosporioides acommon outdoor fungus that can cause asthmatic reactions, particularly in people with weakened immune systems increased. The next steps will include studying the mycobiomes of human participants to prove that these fluctuations are the result of human presence.
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Genetically enhanced, cord-blood derived immune cells strike B-cell cancers – Medical Xpress
Posted: at 6:48 am
July 13, 2017
Immune cells with a general knack for recognizing and killing many types of infected or abnormal cells also can be engineered to hunt down cells with specific targets on them to treat cancer, researchers at The University of Texas MD Anderson Cancer Center report in the journal Leukemia.
The team's preclinical research shows that natural killer cells derived from donated umbilical cords can be modified to seek and destroy some types of leukemia and lymphoma. Genetic engineering also boosts their persistence and embeds a suicide gene that allows the modified cells to be shut down if they cause a severe inflammatory response.
A first-in-human phase I/II clinical trial of these cord-blood-derived, chimeric antigen receptor-equipped natural killer cells opened at MD Anderson in June for patients with relapsed or resistant chronic lymphocytic leukemia (CLL), acute lymphocytic leukemia (ALL), or non-Hodgkin lymphoma. All are cancers of the B cells, another white blood cell involved in immune response.
"Natural killer cells are the immune system's most potent killers, but they are short-lived and cancers manage to evade a patient's own NK cells to progress," said Katy Rezvani, M.D., Ph.D., professor of Stem Cell Transplantation and Cellular Therapy.
"Our cord-blood derived NK cells, genetically equipped with a receptor that focuses them on B-cell malignancies and with interleukin-15 to help them persist longerpotentially for months instead of two or three weeksare designed to address these challenges," Rezvani said.
Moon Shots Program funds project
The clinical trial is funded by MD Anderson's Moon Shots Program, designed to more rapidly develop life-saving advances based on scientific discoveries.
The chimeric antigen receptor (CAR), so-called because it's added to the cells, targets CD19, a surface protein found on B cells.
In cell lines and mouse models of lymphoma and CLL, CD19-targeted NK cells killed cancer cells and extended survival of animals compared to simply giving NK cells alone. Addition of IL-15 to the CD19 receptor was crucial for the longer persistence and enhanced activity of the NK cells against tumor cells.
NK cells are a different breed of killer from their more famous immune system cousins, the T cells. Both are white blood cells, but T cells are highly specialized hunters that look for invaders or abnormal cells that bear a specific antigen target, kill them and then remember the antigen target forever.
Natural killers have an array of inhibitory and activating receptors that work together to allow them to detect a wider variety of infected, stressed or abnormal cells.
"By adding the CD19 CAR, we're also turning them into guided missiles," said Elizabeth Shpall, M.D., professor of Stem Cell Transplantation and Cell Therapy.
Using a viral vector, the researchers transduce NK cells taken from cord blood with the CD19 CAR, the IL-15 gene, and an inducible caspase-9-based suicide gene.
Cell line tests found the engineered NK cells to be more efficient killers of lymphoma and CLL cells, compared to unmodified NK cells, indicating the engineered cells' killing was not related to non-specific natural killer cell cytotoxicity.
Another experiment showed the engineered cord blood NK cells killed CLL cells much more efficiently than NK cells taken from CLL patients and engineered, highlighting the need to transplant CAR-engineered NK cells from healthy cord blood rather than use a patient's own cells.
Suicide gene to counter cytokine release syndrome
Mouse model lymphoma experiments using a single infusion of low dose NK cells resulted in prolongation of survival. At a higher, double dose, none of the mice treated with the CD19/IL-15 NK cells died of lymphoma, with half surviving for 100 days and beyond. All mice treated with other types of NK cells died by day 41.
A proportion of mice treated with the higher dose of engineered NK cells died of cytokine release syndrome, a severe inflammatory response that also occurs in people treated with CAR T cells.
To counteract this toxicity, the researchers incorporated a suicide gene (iC9) that can be activated to kill the NK cells by treatment with a small-molecule dimerizer. This combination worked to swiftly reduce the engineered NK cells in the mouse model.
Subsequent safety experiments were conducted in preparation for the clinical trial. Rezvani, the principal investigator of the clinical trial, says the protocol calls for vigilance for signs of cytokine release syndrome, treatment with steroids and tocilizumab for low-grade CRS with AP1903 added to activate the suicide gene for grade 3 or 4 CRS.
NK CARs available off the shelf
T cells modified with chimeric antigen receptors against CD19 have shown efficacy in clinical trials. In these therapies, a patient's own T cells are modified, expanded, and given back to the patient, a process that takes weeks. Finding a matched donor for T cells would be a challenge, but would be necessary because unmatched T cells could attack the recipient's normal tissue - graft vs. host disease.
Rezvani and Shpall have given patients cord-blood derived NK cells in a variety of clinical trials and found that they do not cause graft vs. host disease, therefore don't have to be matched. NK cells can be an off-the-shelf product, prepared in advance with the necessary receptor and given promptly to patients.
"CAR NK cells are scalable in a way that CAR T cells are not," Rezvani noted.
A strength of T cells is the development of memory cells that persist and repeatedly attack cells bearing the specific antigen that return. NK cells do not seem to have a memory function, but Rezvani says the experience of the longer-lived mice, which are now more than a year old, raises the possibility that a prolonged NK cell attack will suffice.
Shpall, Rezvani and colleagues are developing cord blood NK CARs for other targets in a variety of blood cancers and solid tumors.
MD Anderson and the researchers have intellectual property related to the engineered NK cells, which is being managed in accordance with the institution's conflict-of-interest rules.
Shpall founded and directs MD Anderson's Cord Blood Bank, originally established to provide umbilical cord blood stem cells for patients who need them but cannot get a precise donor match. Donated by mothers who deliver babies at seven Houston hospitals and two others from California and Michigan, the bank now has 26,000 cords stored. MD Anderson researchers pioneered the extraction and expansion of NK cells from umbilical cords.
Explore further: Multiple myeloma patient study shows promise for natural killer cells
Immune cellular therapy is a promising new area of cancer treatment. Anti-cancer therapeutics, such as chimeric antigen receptor (CAR) modified T cells, can be engineered to target tumor-associated antigens to attack and ...
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Too early to settle the Aryan migration debate? – The Hindu
Posted: at 6:47 am
The Hindu | Too early to settle the Aryan migration debate? The Hindu Another study published in The American Journal of Human Genetics (2011; 89:731-744) by Mait Metspalu and colleagues, where CSIR-CCMB was also involved, analysed 142 samples from 30 ethnic groups and mentioned that Modeling of the observed ... |
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DNA Links Deadly Germs, Tainted Heart Surgery Devices To … – Kaiser Health News
Posted: at 6:47 am
By JoNel Aleccia July 12, 2017
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Contamination at a German factory that makes crucial machines used during open-heart surgery is the likely source of a global outbreak of deadly infections tied to the devices, the largest analysis to date shows.
Scientists using whole-genome sequencing matched the DNA fingerprints of samples taken from infected heart-surgery patients from several countries, including the U.S., to samples from the devices, called heater-cooler units, in multiple hospitals and at the production site.
The study, published Wednesday in The Lancet Infectious Diseases journal, concludes that heater-cooler devices made at the LivaNova PLC plant in Munich, Germany, were contaminated during production.
The analysis provides a critical piece of the puzzle behind more than 100 severe and sometimes fatal infections in cardiac surgery patients worldwide since 2013, researchers said.
Our study closes the missing gap, said Stefan Niemann, a professor with the German Center for Infection Research and one of the studys co-authors.
However, officials with LivaNova said that the study was too limited to draw conclusions.
LivaNova is concerned that the article expresses a level of certainty about a point source tie to the manufacturing process that is not warranted by the data, spokeswoman Deanna Wilke wrote in an email.
Scientists from Germany, the Netherlands and Switzerland analyzed 250 DNA samples of Mycobacterium chimaera, an organism typically found in soil and tap water.
The review included samples from 21 infected patients in Switzerland, Germany, the Netherlands and the United Kingdom, and data from another 12 in the U.S. and Australia. The analysis included samples from heater-cooler devices by LivaNova and a second German brand, Maquet, plus hospital water sources and environmental sources.
Scientists found a high degree of similarity in samples from the patients and from the LivaNova heater-cooler units and the LivaNova factory.
The authors noted that they were not able to link individual patients to particular heater-cooler units because they lacked enough water and air samples to document transmission. Infections have been linked to contaminated water in the devices that is then misted into the air.
They also warned against ending investigations into the problem too soon. Researchers found that some hospital water systems and Maquet heater-coolers were contaminated, raising concerns about local contamination.
Vincent Karst, 55, of York, Pa., was among those infected with Mycobacterium chimaera. Known as Vinnie, the father of five and grandfather to 15 appeared to do well after open-heart surgery in March 2015. But, according to a lawsuit, he fell mysteriously ill and had to be re-hospitalized with what doctors later said was an infection tied to the heater-cooler unit used during his operation.
Karst died in May from complications of the infection, his lawyer said.
Patients in several other states have filed lawsuits claiming they were infected, too.
Karsts surgery used a Sorin 3T heater-cooler, a device that circulates water to warm or cool patients blood during bypass operations. More than 250,000 operations using the devices are performed each year in the U.S., and about 60 percent are done with the Sorin 3T models approved for sale in 2006. After a 2015 merger, Sorin became LivaNova.
At least five other manufacturers also sell heater-coolers in the U.S. and they all share a design that could pose a risk for infections, experts say.
The heater-cooler devices use fans to regulate airflow. If the water in the system is contaminated with bacteria, the machines can send the germs into the air, where they can settle in open surgical sites or on cardiac implants before insertion. One complicating factor is that it can take months or even years to detect the slow-growing infections.
Early reports of infections tied to heater-cooler units date to 2002, and Food and Drug Administration officials have said they were aware of the problem by 2014. At least 15 people in the U.S. have died, according to reports submitted to the agency.
But the FDA waited more than a year to warn the public about the risk and even longer to provide recommendations for action to hospitals and patients. Critics contend that if the agency had intervened earlier, more patients would have avoided infections, even death.
The agency now warns that for 3T devices manufactured before September 2014, there is strong evidence of common contamination at the manufacturing site in Germany. But spokeswoman Stephanie Caccomo said local contamination can also occur and hospitals should perform appropriate follow-up measures.
Lawrence Muscarella, a Pennsylvania patient-safety consultant, said hes concerned that a focus on contamination at the factory might lead hospitals to relax their vigilance about what are often called Nontuberculous mycobacteria, or NTM, infections.
[They] might incorrectly conclude that whats to blame for these infections is contamination at a companys manufacturing plant, something the hospital can do nothing about, rather than understanding that hospitals can reduce the risk of NTM infections in open-chest patients, he said.
At the University of Iowa Hospitals and Clinics, where six patients developed infections tied to heater-cooler units, experts solved the problem by putting the devices in a room connected to but separate from the operating room, said Dr. Michael Edmond.
I dont think we can safely say the machines can be decontaminated, said Edmond, a clinical professor of infectious diseases. The only safe mitigation strategy is you have to separate the air that comes out of that machine from the air in the operating room.
Since the hospital took that action in January 2016, no new infections have been detected.
It works beautifully, Edmond said.
Kaiser Health News (KHN) is a national health policy news service. It is an editorially independent program of the Henry J. Kaiser Family Foundation.
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