'Scientific' etiketine sahip kayıtlar gösteriliyor. Tüm kayıtları göster
'Scientific' etiketine sahip kayıtlar gösteriliyor. Tüm kayıtları göster

6 Nisan 2017 Perşembe

We’ve been labelled ‘anti-sex difference’ for demanding greater scientific rigour | Cordelia Fine and Rebecca Jordan-Young

[unable to retrieve full-text content]

Our criticism of gender research has been portrayed as dogmatic feminism – thankfully the scientific community has looked beyond the headlines

At a time when both science and feminism are under attack, there are welcome signs that neuroscience is showing new openness to critiques of research into sex differences. Mainstream journals increasingly publish studies that reveal how misleading assumptions about the sexes bias the framing of hypotheses, research design and interpretation of findings – and these critiques increasingly come with constructive recommendations, discussions and debates.


For example, we, together with other colleagues, made recommendations in the peer-reviewed journal Frontiers in Human Neuroscience on best practice in sex/gender neuroscience. Some of the errors and traps we identified included human neuroimaging studies with small sample sizes, and the common “snapshot” approach, which interprets neural associations with sex as a matter of timeless and universal male and female essences, without taking seriously the fact that biological associations might as easily be the effect of social differences as the cause of them.


These charges [against us] would only make sense in a world without shades of grey


Related: Men are from Mars, women are from Venus? New brain study says not


Continue reading…



We’ve been labelled ‘anti-sex difference’ for demanding greater scientific rigour | Cordelia Fine and Rebecca Jordan-Young

18 Ocak 2017 Çarşamba

Nipah: fearsome virus that caught the medical and scientific world off-guard

In 1998, with no explanation or signal of danger, a fearsome disease took off in Malaysia. Pigs died in large numbers and then men slaughtering infected animals also fell ill. They passed it to their families at home. Nearly half of those who got sick died.


It was not Ebola – it was a virus that became known as Nipah, after the Malaysian town of Kampung Sungai Nipah where it was first identified. But there are resemblances to Ebola in the way the disease suddenly emerged from the animal world and then spread between humans, causing a threat to life that caught the medical and scientific world off-guard.


The story of the outbreak of Nipah in Malaysia was told – and embellished – in the 2011 film Contagion, starring amongst others, Kate Winslet, Gwynneth Paltrow and Matt Damon. There, the disease became a global pandemic, killing 26 million people.


In reality, the death toll from Nipah in Malaysia and Singapore, where it had spread, was 105 out of 265 cases, but could have been much worse had it been more easily transmitted. It also caused the collapse of the $ 1bn pig industry. The disease seemed to come from nowhere, but as with other such viruses, the emergence and spread was caused by a cocktail of human behaviour and environmental change.


The virus is endemic in fruit bats – also known to carry Ebola virus. The bats were on the move, leaving rainforests where slash-and-burn logging was causing massive haze, shutting out sunlight and preventing the fruit they ate from growing. Drought caused by El Niño made things worse.


Large numbers of bats were later seen in the orchards around the pig farms of northwest Malaysia. The virus from their saliva was in the half-eaten fruit they dropped – which was devoured by the pigs.


The Malaysian outbreak was finally stopped by mass culling of pigs in May 1999. But since then there have been regular Nipah outbreaks in Bangladesh, where transmission occurs directly from fruit bats to humans.


“We know how it happens,” said Professor John Clemens, executive director of the International Centre for Diarrhoeal Disease Research, Bangladesh. “The fact that it has established itself as an endemic focus in Bangladesh with regular, albeit infrequent, transmission to man suggests that it could cause broader problems for humanity at large. I would add as well that similar to Ebola virus, people in intimate contact with Nipah patients can acquire the infection, human to human.


“I’m sure you see the parallels there with Ebola, except unlike Ebola, which has its traditional homeland in sub-Saharan Africa, Nipah is here in Asia.”


Nipah was at first misdiagnosed in Malaysia as Japanese encephalitis, because of the swelling of the brain that occurs.


“When it is transmitted to man, it can cause an extremely serious encephalitis, sometimes with pneumonia, and when people get sick with this, the case fatality rate is about 50%, with substantial serious neurological impairment of a fraction also who survive,” said Clemens.


In Bangladesh, the outbreaks occur because of the traditional drinking of palm wine, a delicacy made from date palm sap. Fruit bats like to hang upside down in the palm trees, with the result that their excretions – urine and saliva can find their way into the sap.


There should be ways to avoid this route of transmission – if not through persuading people to avoid palm wine, then by putting skirts on the trees to keep the bats away, said Clemens.


But that would not end the hidden risk. Changes in people’s behaviour or alterations we make to our environment can precipitate a small outbreak – perhaps with a different and unexpected route of transmission – that becomes something far more dangerous. It happened with Ebola, which spread from rural villages into the cities, where large numbers of people lived close together and were easily infected. That is also the danger with other zoonotic diseases, including Nipah, said Clemens.



Nipah: fearsome virus that caught the medical and scientific world off-guard

9 Ocak 2017 Pazartesi

Scientists Plan to Send First Interstellar Greetings to the Star System in the Movie Avatar: Link to the Scientific Research

An organization called METI short for Messaging Extra Terrestrial Intelligence has announced that there is a project under way to send Greetings by way of powerful radio or laser signals to Proxima Centauri, our nearest stellar neighbor. Sitting just 4.3 light years away Proxima Centauri is a Trinary star system consisting of three stars. Laser or radio signals would take 4.3 years to get there in a first attempt at contacting different worlds. These messages would be repeated for months or years in hopes of a reply. Proxima Centauri hosts the closest known exo-planet to Earth, Proxima Centauri b. This exo-planet was discovered by the European Southern Observatory in August of 2016, and it appears to lay within the habitable zone of its Red Dwarf star. This is one the targets for the Greetings signals scientists from METI plan on sending. No one is claiming that it is habited, but it is the best and closest chance. Good for practice but their are many more targets in the future according to METI’s President Douglas Vakoch. He hopes to send greetings to many star systems. Another interesting side note is….


The fictional moon called Na’vi set in the Proxima Centauri system is the backdrop of James Cameron’s 2009 movie Avatar. You couldn’t make this stuff up.


Scientists plan to send greetings to other worlds Phys.org December 26, 2016


Signaling to other worlds is a bold and historic move that is unprecedented in history.  Stephen Hawking has recently warned if we pick up alien signals don’t answer back. It could be a deadly move. The subject is full of controversy.


Like much else in science, the project has turned controversial. Some ask: If aliens are hostile, do we really want them to know where we are?


We shouldn’t draw attention to ourselves, say science fiction writer David Brin and theoretical physicist Stephen Hawking.



Stephen Hawking warns that humanity should not respond to aliens in case they kill us all


“We have almost zero idea of whether aliens are likely to be dangerous,” physicist Mark Buchanan wrote in journal Nature Physics in Looking for Trouble.



Who gave these people permission to start signaling possible alien civilizations. Anyone?


METI works closely with SETI the Search for Extraterrestrial Life scanning in the optical range to look for signs of alien civilizations. Seth Shostak, senior astronomer with the SETI Institute, is all for the idea despite the possible implications.


Others endorse the effort. “I’d be happy to see this done,” said Seth Shostak, senior astronomer with the SETI Institute. “I think there’s something to be learned, nothing to be feared, and at least the possibility of discovering something truly revolutionary: We have company nearby.”



How would this be accomplished and what are the possible future targets?


About this question, it was entirely coincidental in that this author wrote an academically linked article detailing this very answer published at Blogs.NaturalNews on December 22, 2016. Four days before the METI announcement with the original information published months before. Using research from two Canadian scientists from the University of Laval in Quebec, Canada, E.F. Borra and E. Trottier. The Blogs.NaturalNews piece points out that astronomers may have picked up the exact laser signals being described, that astronomers plan on sending, from 234 star systems quite similar to our own. Going into great detail about the power of lasers needed, what an alien signal may look like and how to structure our own signal. Pulsing the beam by nanoseconds so it would not be mistaken for anything natural in a routine sky survey by an alien civilization.


Alien Contact. Can We Answer Back?


Clearly explaining the technology has been available as early as 2004 that could transmit 1000 light years to about 1 million Sun-like stars.


For this, we shall use the analysis in Howard et al. (2004), who considered the energy requirements for an ETI trying to communicate with nanosecond optical pulses. They considered the feasibility of interstellar communications with technology available at the time the paper was written. They assumed communications within a 1000 lt-yr diameter region surrounding Earth that would contain about 1 million Sun-like stars. They assumed that a diode-pumped laser similar to the Helios laser designed at Lawrence Livermore National Laboratory for inertial confinement fusion would be used



SEARCHING FOR EXTRATERRESTRIAL INTELLIGENCE SIGNALS IN ASTRONOMICAL SPECTRA, INCLUDING EXISTING DATA.


Shouldn’t the whole world have a say in this? It would seem that elected leaders from around the world would convene to make such a decision. Probably one the most important collective choices the world could ever make. Again quoting from Phys.org.


There have been plenty of other efforts to connect with aliens, but they’ve come in fits and starts. There are no regulations for sending signals into space.



Hey if a couple of astronomers say it’s OK. Everything will be just fine. Right?   Never mind what the smartest people in the world say.


Visit RaptormanReports for news, science, and history.


Sources:


http://www.meti.org/


http://phys.org/news/2016-12-scientists-worlds.html


http://www.nature.com/nphys/journal/v12/n8/full/nphys3852.html


http://iopscience.iop.org/article/10.1088/0004-6256/144/6/181#aj447722r4


http://blogs.naturalnews.com/



Scientists Plan to Send First Interstellar Greetings to the Star System in the Movie Avatar: Link to the Scientific Research

28 Temmuz 2016 Perşembe

The Guardian view on scientific discovery: be prepared | Editorial

The discovery that there are bacteria in mucous in the human nose that secrete an antibiotic that kills other, more dangerous, forms of Staphylococcus before they can kill us, illustrates some important truths of science. The first is that properly trained minds can make the study of almost anything, however unlikely, rewarding. Microbiota turn out to be a playground for the enquiring mind. If the new substance is proved to work in humans as it does in mice, it may save thousands of lives a year from MRSA infections. The second is that, from the discovery of antibiotics to the methods of gene sequencing and now gene editing, modern medicine often depends on co-opting to our purposes tricks that nature has already found. The human ingenuity consists in recognising the prior ingenuity of evolution. Science has often appeared to depend on chance, although what looks like chance may be more to do with the scientific mind. The attention to detail that makes the unexpected plain to see, and, once it’s identified, the capacity to ask questions about it, are often the essence of discovery.



The Guardian view on scientific discovery: be prepared | Editorial

20 Ağustos 2015 Perşembe

Can the humble fruit fly support produce a flourishing African scientific neighborhood?

African biomedical scientists encounter crucial issues – bad instruction, poorer infrastructure and scarce sources.


Associated: Larger Schooling in Africa: Our continent needs science, not support


This indicates most research is by way of epidemiological research or employing laboratory rats. Neither methodology deal with the cellular and molecular underlying physiological processes or diseases, or teach junior scientists how to carry out hypothesis-driven science.


As a outcome, the African study agenda is mostly set by properly-meant funders residing far away from the African actuality. Local researchers are most typically ignored, sometimes employed as a token in “collaborative” grants. People on ground have tiny to no decision-producing electrical power and the biggest element of the resources return to the west exactly where they originated.


We believe the Drosophila melanogaster (fruit flies) can empower the scientists of Africa to pursue their research interests. Drosophila transformed the scientific scene in Spain decades in the past, when limited assets referred to as for an affordable laboratory model.


Drosophila researcher
A Drosophila researcher in Kampala. Photograph: Marta Vicente Crespo

Three Spanish researchers founded DrosAfrica to train a local community of researchers to use fruit flies to investigate biomedical concerns. This species of fly has been instrumental for developmental biology, genetics and biomedical analysis. The flies have played a role in identifying genes that relate to the immune program, cancer, Alzheimer’s and Parkinson’s illnesses and are an invaluable instrument in educating analysis, the scientific method and crucial contemplating.


In 2012, I moved to Uganda to set up a investigation lab at Kampala International University (KIU). Resources are scarce and recruiting competent staff is mission impossible. The lab is dusty and energy is erratic. Back then, very handful of knew of the existence of Drosophila, but now we have Nigerians, Kenyans and Ugandans discussing with this Spaniard how to check the prolonged-phrase effects of repeated publicity to some drugs utilizing flies.


In two workshops we have educated 27 individuals (17 Nigerians, three Kenyans, and four Ugandans). Our alumni are employing flies for their PhD tasks and leading budding investigation groups in Uganda and Nigeria. We have also established make contact with with other institutions and in 2016 we will run workshops at universities in Kenya and Nigeria.



Funders want the remedy for malaria but overlook to build capacity to allow African scientists to compete



Raising money for creating capability is a challenge. Funders want clean water for all, or the remedy for malaria, but neglect to create the capacity that will allow African scientists to compete for analysis money to fix Africa’s overall health problems. The couple of agencies that fund workshops give little amounts to partially cover bills. If we really do not cover travelling costs for participants, we will be constrained to the regional audience. Luckily, Kampala university has attracted an worldwide faculty to work with and our original efforts can broaden with the return residence of our alumni.


Two many years soon after the 1st workshop we have an established graduates who have accomplished large high quality study with their very own hands with out leaving the continent, and our alumni are instruction others. We want to do more workshops. We want to establish fly rooms all in excess of sub-Saharan Africa. The sources necessary to start off up a fly lab are small, but possible positive aspects are huge: deep information and profound discoveries. We consider that Drosophila can lead the consider-off of African biomedical study.


Marta Vicente-Crespo is a co-founder of DrosAfrica and director of the Institute of Biomedical Analysis at Kampala Worldwide University.


We are running a particular concentrate on the development of increased training in Africa. Do you have knowledge of the sector, or an informed stage of view on this subject? Speak to us on globaldevpros@theguardian.com with “higher training in Africa” in the subject line.


Join our community of development professionals and humanitarians. Follow@GuardianGDP on Twitter.



Can the humble fruit fly support produce a flourishing African scientific neighborhood?

20 Haziran 2014 Cuma

What excellent scientific challenge should win the Longitude Prize? podcast

This week on Science Weekly presented by Ian Sample, we discuss the Longitude Prize 2014. 3 hundred many years following the 1st prize to learn a way of identifying longitude at sea, a new set of challenges have been shortlisted and thrown open to a public vote to choose the one scientific and technical dilemma that merits the £10m prize fund.


Ian is joined by Guardian on the internet environment editor Adam Vaughan, Observer Tech Month to month commissioning editor Nicola Davis and Dr Emily Grossman, educator, broadcaster and expert in molecular biology.


We also hear from two members of the new Longitude committee, Astronomer Royal Lord Martin Rees and the UK’s Chief Medical Officer Dame Sally Davies, on the scientific issues that could win the prize, and how the public – yes, that means you and me – can establish the nature of that challenge.


The public vote closes at 7.10pm on Wednesday 25 June:


Click right here to vote online.


Or text/sms the following keyword to 60011
To vote for antibiotic resistance text ANTIBIOTICS
For sustainable nutrition text Food
For dementia care text DEMENTIA
For restoring mobility text PARALYSIS
For fresh water text WATER
For zero-carbon flight text FLIGHT


Subscribe for totally free via iTunes to make sure each and every episode gets delivered. (Here is the non-iTunes URL feed).


Stick to the podcast on our Science Weekly Twitter feed and obtain updates on all breaking science information stories from Guardian Science.


Email scienceweeklypodcast@gmail.com.



What excellent scientific challenge should win the Longitude Prize? podcast

31 Mayıs 2014 Cumartesi

ASCO 2014: How Scientific Collaboration Can Boost Our Strategy To Fighting Cancer

Though overall age-adjusted death rates for cancer in the US have declined in the previous decade, inform that to about half a million individuals who will get a cancer diagnosis this year, according to data from the American Cancer Society (ACS) and the Nationwide Cancer Institute (NCI). The shock and emotional soreness related with the 6 letter word are devastating.


With considerable national and personal expenditures in grownup cancer investigation leading to higher survival and high quality of daily life for some cancers (breast), accomplishment at treating other cancers (pancreatic) has not yet been attained. The unique biology of specified tumors and their potential to mutate has largely prevented researchers from unlocking the crucial to obtaining larger 5-12 months survival charges.


With new techniques obtainable to fight cancer, like a novel strategy recognized as “immune modulation” helping to accomplish substantial gains in longevity for patients with melanoma and specific varieties of lung cancer, it is crucial to nevertheless recognize that a lot operate demands to be accomplished in our fight against cancer.



David H. Koch Institute for Integrative Cancer...

David H. Koch Institute for Integrative Cancer Investigation (Photo credit: Wikipedia)




Keeping this in mind, academic institutions have begun to comprehend the worth of data sharing and scientific collaboration in an try to discover new treatment options and modalities to approach cancer, both in kids and grownups. The days of study groups competing towards one particular one more hunting at related conceptual puzzles is now getting replaced by unified approaches with so-named “dream teams”–groups of focused researchers whom freely collaborate between institutions–pioneered by the organization Stand Up To Cancer, (SU2C) according to Philip Sharp, Ph.D, Nobel Laureate, Institute Professor at MIT’s David H. Koch Institute for Integrative Cancer Investigation, and Chair of the Scientific Advisory Committee for SU2C.


Unknown“This superb concept of S2UC– of collaboration and bringing together teams of scientists that compliment one particular other– and raising money by appealing to the public and massive donors changed the fashion of cancer analysis by making it far more collaborative and interactive discipline,” explained Sharp. “I located the vision compelling and knew this would be a really public face of cancer research and wanted it to be as higher a quality and have as large an affect as it possibly could.”


Dr. Sharp PhotoAs Sharp explains, SU2C appeals to professionals in the area of cancer study and standard science relevant to a targeted concept. It is not meant to duplicate fundamental science work completed by NCI or sophisticated cancer therapeutics investigations in the personal sector, as Sharp explained, particularly in the context of discussing translational investigation which ideally has a shorter time to reach patients.


“We have tried to uncover the very best teams that have representatives from those communities and then leverage them with what we feel are proximal breakthroughs that have not been moved to translation as fast as attainable and put money there and make that come about,” described Sharp.  “People who are donating this income want to see the advantages of these new approaches as fast as feasible.”


Although the conceptual theme of immune modulation was component of the early perform of the early dream teams in accordance to Sharp, the notion of “personalized medicine”–designing therapeutics following identifying a certain mutation in a cancer cell has been a viable technique going forward. “We have also produced a significant investment in the immune strategy to cancer analysis as nicely.”


Sharp’s research in the preliminary stages of his profession targeted on the molecular biology of gene expression and RNA splicing in cancer cells. In 1977, he elucidated the mechanism of RNA splicing, and identified that genes contain so-known as “nonsense” segments which are edited or eliminated by cells as they procedure genetic data. This approach is integral to the comprehending of the genetic basis for cancer and illness progression, and Sharp was subsequently awarded the 1993 Nobel Prize in Physiology or Medication for this discovery. His research is now  focused on comprehending how specific molecules of RNA can activate certain genes, referred to as RNA interference. This has altered how researchers strategy cell biology and may be a new supply of therapeutics in the long term.


Sharp’s dedication to SU2C more than the previous six many years, has led to a adjust in the paradigm of how we technique cancer remedy. As co-founder of Biogen (now Biogen Idec), and Alnylam Pharmaceuticals, an early stage therapeutics firm and Magen Biosciences Inc., a biotechnology organization developing compounds to make certain well being of human skin, Sharp has been a pioneer in selling the use of molecular biology and genomics, and now “convergence,” as approaches to more efficient drug growth.


And, as he detailed in a white paper from MIT in 2011, the concept of “convergence”–the merging of existence sciences, physical sciences and engineering is now generally viewed as an critical method to perform meaningful investigation to obtain viable solutions to cancer biology and therapy in 2014.  As Sharp emphasizes, convergence represents the so-named threerd “frontier” in the progression from the first two milestones accomplished in the past thirty many years: the advent of cell and molecular biology and genomic sequencing.


Employing such “dream teams” to method breast, pancreatic, melanoma and lung cancers fosters collaboration amid huge academic institutions, even though promoting the concept of “translational medicine” as an efficient way to carry laboratory advances to the bedside, in accordance to Sharp. For this novel strategy,  S2UC researchers are viewed as leaders in their strategy to streamlining cancer analysis.


Unknown-1


St. Jude Children’s Investigation Hospital, a worldwide leader in pioneering pediatric cancer diagnosis and therapy, is also a participant in shared information and collaboration among other institutions, in accordance to Leslie Robison, Ph.D, Chair of the Division of Epidemiology and Cancer Handle, and Associate Director for Cancer Prevention and Control at St. Jude Children’s Research Hospital.


“One of the major charges of our institution is to deal with patients, perform substantial quality investigation, but to make positive we disseminate that study as broadly and widely as feasible,” explained Robison.  “We help to disseminate and facilitate getting access to our information.”



ASCO 2014: How Scientific Collaboration Can Boost Our Strategy To Fighting Cancer

20 Nisan 2014 Pazar

"Microbe Hunters" With A Present day Sensibility, "The Remedy" Examines Germ Theory"s Scientific Origin And Social Diffusion

I can trace my early profession interests along a vector of science literature that began in elementary school, with Paul de Kruif’s 1926 traditional, Microbe Hunters, continued with Berton Roueche’s great New Yorker “Medical Detective” stories in junior higher, and was followed by Horace Freeland Judson’s Eighth Day of Creation, an inspirational history of molecular biology’s formative years,  in higher school.  When I was touring schools and came across the centrifuge used in the popular Meselson-Stahl experiment carried out to demonstrate the semiconservative replication of DNA, I was offered.


In many ways, the de Kruif stories, written as profiles in heroic science, have aged the least effectively the hagiography retains a certain charm, to be certain, but loses its immediacy and sense of resonance.  I’ve prolonged wished Microbe Hunters could be updated in a way that more fully contextualizes the researchers’ work and achievements – not to tear down these heroes, but to humanize them, representing their accomplishments – and their failures – with greater nuance, but related empathy, even though placing the science in a broader and much more full social context.


In reading through Thomas Goetz’s The Treatment this weekend, I felt that my wish was lastly granted.


Goetz may be ideal acknowledged for a preceding position, Executive Editor of Wired.  Right now, he’s co-founder (with Matt Mohebbi, of Google Flu Trends fame) of the health analytics startup Iodine, and Entrepreneur-in-Residence at the Robert Wood Johnson Basis, and has an abiding, possibly unavoidable curiosity in wellness and medicine.  His late father was a prominent academic diabetologist, his mother worked as nurse for decades, a sister is a training surgeon, and one more sister was tragically killed in Uganda in 1998 while functioning to advance public well being with the Minnesota International Health Volunteers.  He has carried out them all proud with this work.


Goetz’s easy familiarity with medicine suffuses the pages of The Remedy, a thoughtful, patient, in the long run fascinating account of the struggle of 19th century science, and society, to come to grips with the germ concept of illness, and produce new technologies to consider on 1 of humanity’s oldest scourges, tuberculosis.


Goetz focuses on two protagonists in particular, beginning with the German Robert Koch, whose ambition and careful methodology propelled him from obscurity to fame, culminating in the identification of the causative agent of tuberculosis, the elusive Mycobacterium tuberculosis.  We are launched to Koch’s struggles: the righteous,  which includes his disputes with distinguished skeptic Rudolf Virchow, who believed germs had been at greatest the consequence, not result in of ailment the petty — most notably his bitter, ongoing battle with Louis Pasteur for recognition and acclaim and the misguided – such as his mistaken belief that he had recognized a remedy for tuberculosis.  Had he only utilized the rigorous precepts for evidence that he meticulously created, and that had guided his work for years, the tragic error, and ensuing fall from grace, it looks, could easily have been avoided.


Who was arguably the very first person to propose the great Robert Koch may well have been mistaken?  An ambitious British doctor making an attempt to gain traction as a writer, and who had traveled to a scientific demonstration in Berlin expecting to be dazzled by Koch, nevertheless returned disappointed though with a fascinating story to share.


Nevertheless it wasn’t his critique of Koch that catapulted this writer to fame rather, it was the scientific methodology of his character Sherlock Holmes that sooner or later introduced the globe to Arthur Conan Doyle.


However Conan Doyle at some point very medication to concentrate on writing, “Conan Doyle had gotten a great deal out of medicine,” Goetz writes:



“An training, a sense of stature and accomplishment, and most of all, a globe view.  His was by now a thoroughly scientific mind, regardless of whether or not he nevertheless chose to participate in that science.  Healthcare science informed how he considered it influenced how he wrote and really clearly, it was inseparable from what he wrote.”



Conan Doyle’s Holmes – a lot like Koch at his best– was, Goetz observes, “precise, methodical, and keenly perceptive.  He ably appropriates the tactics of the bacteriologist to discern what seems otherwise invisible.”


This method appealed to Conan Doyle’s audience since, as Goetz writes,



“science was longer seen as some radical challenge to European culture instead, it seemed in several approaches to define the culture.  This was real in Germany and France and specifically in Britain, the place science seemed to touch anything in the Victorian spirit.”



Knowing how germ theory manufactured this leap, and evolved from revolutionary science to cultural expectation is Goetz’s preoccupying query – or as he frames it much more generally, “how does a scientific revolution construct towards social modify?”  He continues,



“This is probably the central query of the previous 150 many years, a period when science has, time and once again, transcended a eureka moment in the laboratory to compel a broader cultural shift.  This trajectory lies behind every little thing from nuclear energy to plastics to the Internet.  But as important as this trajectory is for the fabric of our day-to-day lives, the method too usually slips by without having our noting it, or even our know how, exactly, the progress truly takes place.”



Moving from science to culture, Goetz writes, demands two related but distinct actions, characterized by distinct processes and associated with various burdens of evidence.  The initial phase is scientific – achieving the sort of paradigm shift Kuhn describes (and that Jim Manzi nicely reviews in Uncontrolled) by providing compelling information that meet established specifications of evidence – and waiting for holdouts to die off.


The 2nd step – originally conceptualized, Goetz says, by Freeman Dyson – is the “skills and inventions” (to use Dyson’s terms) that come from new scientific concepts.  In this see, as Goetz puts it, “the revolution lives in the sector, not the thought.”  It’s the technology, the industry, the useful outcomes of science that we see around us that eventually permits the revolution to move from science to culture.


As a result, while Koch might have designed the crucial ideas for defining a causative agents – Koch’s postulates continue to be taught in medical school these days – the cultural adoption of this mindset necessary not just concrete examples of good results (this kind of as Pasteur’s renowned demonstration of an anthrax vaccine at Pouilly-le-Fort, which culminated, according to Goetz, with Pasteur raising his arms in triumph and crying “Here is it! Oh ye of small faith!”), but also characters such as Conan Doyle’s Sherlock Holmes, an engaging representation of the scientific procedure Pasteur and Koch refined, preached, and quite frequently, practiced.



"Microbe Hunters" With A Present day Sensibility, "The Remedy" Examines Germ Theory"s Scientific Origin And Social Diffusion

14 Mart 2014 Cuma

Reassuring News About Statins From Two Quite Diverse Scientific studies

Even though clinical trials have regularly demonstrated the positive aspects of statins, the perception that the drugs can lead to serious side effects has prompted some sufferers to discontinue or not take the medication. Now two new really various studies, a single a huge meta-analysis and one a tiny study with only a handful of individuals, provide some convincing reassurance that most of the side results that have been tied to statins do not seem to be really induced by the medication.


A Huge Meta-Analysis


In the very first study, a quite huge meta-analysis published in the European Journal of Preventive Cardiology, researchers in the United kingdom analyzed information from more than 83,00 individuals randomized to statin treatment or placebo and located “little evidence of incremental symptomatic side results beyond placebo,” however they did locate a tiny absolute enhance of .4% in people taking statins who had asymptomatic liver enzyme elevations.


The authors reported that though there have been several reviews of side effects typically linked to statins, which includes myopathy, fatigue, muscle aches, and rhabdomyolysis, none occurred more typically in the statin patients than in the placebo individuals.


In 14 primary prevention trials, which incorporated 46,262 randomized topics, there was a tiny absolute .5% increase in the chance of diabetes in the statin group, but there was an absolute reduction of the same dimension in the danger of death. Total, serious adverse occasions had been reported in 14.6% of the statin group versus 14.9% of the placebo group.


In 15 secondary prevention trials, which included 37,618 randomized topics, there was an absolute 1.4% reduce in the risk of death in the group taking statins. General, critical adverse occasions occurred in 9.9% of the statin group versus eleven.2% of the placebo group.


In a separate analysis the researchers analyzed information from five randomized trials that in contrast low-dose to higher-dose statins. High dose statins have been connected with small but substantial increases in asymptomatic liver enzymes, myopathy signs and muscle aches. But high dose statins were also connected with important reductions in myocardial infarction and stroke.


The researchers acknowledge in their paper that the clinical trials utilised for their evaluation could not completely reflect real-daily life clinical experience. Trials differ in the degree to which they search for and document side results, and some investigators or sponsors “may not be motivated to search exhaustively for prospective side results.” In addition, people who qualify for or pick to participate in clinical trials could vary in critical ways from true lifestyle patients.


The authors concluded that “only a tiny minority of symptoms reported on statins are genuinely due to the statins: virtually all reported symptoms occurred just as regularly when sufferers were administered placebo.”


N-of-one Trial


Taking a diametrically opposed technique to try to solution the very same query, Canadian researchers utilized only a handful of individuals in an very novel trial layout known as an N-of-1 trial. These trials, writes Washington University cardiologist Andy Kates in CardioExchange, may be an efficient way to restrict biases in personal sufferers as each patient serves as his or her personal handle. N-of-one trials are single-patient, randomized, numerous crossover, blinded comparisons of an active remedy versus placebo.”


Kates summarized an eight-individual N-of-1 study published in the Annals of Inner Medication earlier this month:



Eight sufferers who had discontinued statin use due to myalgia have been randomly assigned to statin therapy or placebo, up to 3 times each and every, for up to 3 weeks. Treatment method periods had been separated by 3-week washout intervals to reduce carryover effects.   Seven patients completed the total trial (3 remedy pairs), and 1 finished two treatment pairs. For each and every n-of-one trial, there was no clinically significant big difference in myalgia or other pain measures.   Five sufferers resumed open-label statin therapy at the finish of the trial.



The benefits, then, are fully steady with the United kingdom meta-evaluation and they suggest a method for doctors to employ when dealing with sufferers who have, or believe they have, statin-associated side results. N-of-one trials can be performed by personal doctors with personal individuals to assist figure out if statin-related side effects are truly statin-connected side effects.



Reassuring News About Statins From Two Quite Diverse Scientific studies

12 Mart 2014 Çarşamba

The scientific research has become a flawed manual for living | Anne Perkins

Smoking - 18 Jan 2012

According to the Million Ladies Study, girls can smoke right up until they’re 30 with almost no impact on daily life expectancy. Photograph: Isopix / Rex Features




The Million Girls Review is in the business of discovering out unknown unknowns. Nowadays, for example, we understand from it that females with partners are less likely to die of heart illness, even though they are just as very likely to get it in the very first location. The Oxford-based researchers have an astonishing database, the data of 1.3m middle aged ladies recruited in the late 1990s, initially in order to examine hormone substitute therapy. But – and why not – presently the epidemiologists seem to come up with various methods of quarrying their extraordinary resource for answers that will look very good in the headlines. The study is turning into a variety of guide for residing.


So they have found out the following: the far more youngsters you have the fatter you are, unless of course you breastfed them for at least six months, in which case you will be thinner. You can smoke till you’re thirty with nearly no affect on your daily life expectancy, but smoke right after 40 and which is ten many years off it. They have also noticed that taller folks get a lot more cancer and are now considering if owning a cat influences your opportunity of receiving brain cancer. I did not make the final one up. It is on the internet site.


In other news, The Instances reports that Dundee scientists have identified that overweight girls are much more likely to fail their GCSEs, whilst the Everyday Mail has discovered a examine showing that females speak three occasions as a lot as guys, since – allegedly – of the influence of testosterone on the building brain.


What is puzzling is how we – each and every a single of us – need to reply to all this persuasively authoritative details. In some ways cohort research this kind of as Oxford’s Million Females act as a type of mirror for each older lady. In a million girls, there will be a single who is going to be just like us, a tiny ahead on the amble by means of existence, a pattern from whom we can understand. In which she stumbles above an additional glass of wine even though stroking her cat and as a result succumbs to a cancer, we can say no and reside on.


That is what is so alluring about all these scientific studies. The beguiling weight of scientific evidence appears to supply the two an individualised glimpse of our potential selves and an analytic device for explaining why our current lives are this kind of rubbish. Each and every “study” turns into a guidebook to modern day life, a instructor who is aware of us greater than we know ourselves, an analyst who can search into our souls. In which our ancestors relied on the Bible or at least a political philosophy, we can compose our biography in scientific studies. They turn into the measure against which we judge ourselves. Worse, they become the measure we hold other men and women to. Scientific studies define us, and they define otherness. The a lot more we know about the epidemiology of cancer or obesity, the a lot more stringent we can be in our condemnation of those who refuse to dwell by the guidelines.


And however we do all this understanding perfectly well that we are not standardised people. All studies present is the statistical probability of an occasion, and even that only seldom with the sort of self-confidence that legitimises action (even though it is totally proper that the Million Females Examine is based in a developing named for Richard Doll, the man who first linked smoking to cancer).


So whilst it really is interesting to hear that women are less likely to die of heart condition if they have a companion, no one’s going to go out to uncover one in purchase to have a marginally better likelihood of creating it to outdated age.




The scientific research has become a flawed manual for living | Anne Perkins

8 Ocak 2014 Çarşamba

The Problems With "Scientific" Investigation These days: A Lot Which is Published Is Junk


English: Science icon from Nuvola icon theme f...

(Photograph credit score: Wikipedia)




By Henry I. Miller and S. Stanley Young


Many non-scientists are puzzled and dismayed by the continually changing tips that comes from medical and other researchers on numerous problems.  One week, coffee causes cancer the subsequent, it prevents it. Where should we set the LDL threshold for taking statins to avert cardiovascular illness?  Does the radiation from cell phones cause brain tumors?


Some of that confusion is due to the top quality of the evidence, which is dependent on a number of factors, although some is due to the nature of science itself: We form hypotheses and then complete experiments to check them as the information accumulate and different hypotheses are rejected, we grow to be more confident about what we think we know.


But it may possibly also be due to present state of science.   Scientists themselves are turning out to be increasingly concerned about the unreliability – that is, the lack of reproducibility — of many experimental or observational final results.


Investigators who execute analysis in the laboratory have a higher degree of handle over the situations and variables of their experiments, an integral part of the scientific strategy.  If there is significant doubt about the final results, they can repeat the experiment.  In standard, the much more iterations, the much more self confidence about the accuracy of the results.  Finally, if the final results are sufficiently novel and intriguing, the researchers submit a description of the experiments to a trustworthy journal, exactly where, after assessment by editors and expert referees, it is published.


Hence, researchers do the perform and, in theory at least, they are topic to oversight by journal editors (and whoever funds the research, which is typically a government company).


It is important to know how nicely this method works.  In part, the response depends on the design of the study.  Laboratory studies are “experimental,” that means that usually they decide the results of only a single variable, this kind of as various doses of a drug offered to rats (although the control group gets a placebo).  By contrast, “observational studies,” in which individuals are queried and certain outcomes are recorded, do not attempt to have an effect on the outcome with an intervention.


In observational scientific studies, tens of 1000′s of individuals may be asked by epidemiologists which food items they eat, what medication they get, or even in which zip code they reside.  These people are followed for some length of time and numerous wellness outcomes are recorded.  Finally, the “data mining” of massive data sets like this searches for patterns of association — for instance, the consumption of particular meals or medicines correlated with overall health outcomes.  A conclusion of this kind of a examine might be, “the use of hormone replacement treatment in girls in excess of 50 is associated with a decrease incidence of heart attacks,” or “people who consider massive quantities of vitamin C get fewer colds.”


Observational studies have both useful and theoretical limitations they might be suggestive but they are not able to show result in and effect.  There is a essential difference between plausibility and provability, and a lot of this kind of studies are subsequently found to be misleading.  For instance, in spite of early observational research that concluded the opposite, it is now clear that “Type A” personality does not lead to heart attacks.  The original declare could not be replicated in two properly-carried out follow up trials.  In fact, of about 50 claims discovered or suggested from observational research, none replicated when tested in randomized clinical trials.


How do we get so numerous erroneous conclusions from observational research?  In most of them, from dozens to hundreds or even thousands of inquiries are asked.  Statistical significance will occur by possibility about five% of the time, yielding false-optimistic results. Researchers might exploit this phenomenon by asking tons of inquiries and then producing a story all around what are most likely random, or opportunity, events.


If designed and performed properly, lab-primarily based experiments need to be more trustworthy than observational research.  However, recent proof signifies that frequently they are flawed: Researchers may possibly tinker with their experimental layout until they get the end result they want and then rush to publish with out replicating their own perform, for instance.  Investigations have discovered systematic deficiencies of methodology in specified complete sectors of lab investigation.  One such spot is experiments in animals randomization and blinding are not a part of researchers’ culture, whereas the arbitrary dropping of animals from the benefits of a study is.  In a spectacular recent article in the journal Science, one investigator associated what frequently occurs: “You appear at your information, there are no rules…People exclude animals at their whim, they just do it and they don’t report it.”  The result of such practices is that interventions to cure or benefit animals frequently fail to replicate in humans.


Such failures to replicate experiments have essential implications, because drug companies and foundations with targeted interests frequently try to apply the final results of experimental biology to the advancement of products for therapeutic interventions, the creation of dietary tips and other applications.


After a series of failed attempts to lengthen basic investigation findings (from academic labs), two large drug firms, Bayer and Amgen, very carefully reviewed their personal knowledge and located that only 25 and eleven percent, respectively, of the claims in the scientific literature could be replicated in a way that was sufficiently robust to be helpful as the basis for drug improvement projects.  Astonishingly, even when they asked the original researchers to replicate their very own perform, for the most part they could not.  This might describe why scientists’ capacity to translate cancer investigation in the laboratory to clinical good results has been shockingly poor.


The extremely respected journal Nature Biotechnology recently ran an editorial on this subject.  It appeared in the identical concern as a report of the inability of a team of scientists to replicate an earlier mouse experiment (which had supposedly identified that a certain class of RNAs in foods plants could be absorbed into the bloodstream of animals and trigger an effect on gene expression) by a various investigation group that had been published in the journal Cell Study.  The latter journal should have published the second post which, in effect, repudiated the earlier report, but the editors declined to do so.  Therefore, it fell to Nature Biotechnology to stage up, because, stated the editorial, “When an first report prompts this level of concern and involves a significant investment of time, energy and assets from both researchers and regulators in evaluating its findings and comprehending its implications, then a carefully controlled and executed replication examine plainly warrants publication.”  Kudos to Andrew Marshall, the journal’s editor.


A number of empirical scientific studies display that 80-90% of the claims coming from supposedly scientific studies in significant journals fail to replicate.  This is scandalous, and the issue is only probably to turn into worse with the proliferation of “predatory publishers” of several open-access journals.  According to an expose of these practices by Gina Kolata in the New York Occasions, the journals published by some of the worst offenders are practically nothing a lot more than income-generating machines that eagerly, uncritically accept essentially any submitted paper.



The Problems With "Scientific" Investigation These days: A Lot Which is Published Is Junk