Culture

New soft coral species discovered in Panama

image: DeepSea submersible collects coral sample.

Image: 
Hèctor Guzmán, STRI

A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.

Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the only other species in the genus in the eastern Pacific, T. variabilis.

T. dalioi is named for Ray Dalio, a supporter of marine exploration. Its name is intended to recognize Dalio's valuable contributions to marine research and public outreach.
Hannibal Bank, part of the Coiba National Park and a UNESCO World Heritage Site, is a coastal seamount and a biodiversity hot spot that has only been explored recently.
"After just two expeditions using submersibles down to 300 meters, we have identified 17 species of octocorals for the Hannibal Bank, including the discovery and description of three new species," said Hector M. Guzman, marine ecologist at STRI and one of the authors of the study.

Light-dependent coral and algae, as well as other life-forms found in low-light environments, live on mesophotic reefs: meso means middle and photic means light.
These reefs, such as the one where T. dalioi was found, are considered fragile habitats with a high diversity of corals, algae and sponges. They are also generally neglected in most environmental and conservation policies because they are difficult to reach. Hannibal Bank is one of the spots requiring more attention for its protection.
"The present study should provide the basis for further research on the genus and contributes to the diversity and distribution knowledge of octocorals from the mesophotic zone in the eastern Pacific Ocean," said Odalisca Breedy, marine biologist at CIMAR and one of the authors of the study.

"Medical researchers have identified therapeutic benefits derived from both soft and hard corals such as anti-inflammatory and anti-cancer properties, bone repair and neurological benefits," said Guzman. "But our ability to contribute to the understanding of soft corals and their habitats, depends not only on steady funding for the use of submersibles, but also on our continued ability to obtain permission to work in Coiba National Park."

Credit: 
Smithsonian Tropical Research Institute

Taste preferences connected to success of long-term weight loss after bariatric surgery

BINGHAMTON, N.Y. - Following Roux-en-Y gastric bypass (RYGB), a type of bariatric surgery, many patients exhibit a reduction in taste preference for sweet and fatty foods, although this effect may only be temporary, according to new research from Binghamton University, State University of New York.

Obesity is a growing epidemic worldwide and a leading cause of death alongside heart disease and smoking. Bariatric surgery, specifically RYGB, is the most effective treatment for obesity.

"People who have this surgery are what we call morbidly obese, meaning that they are at least 100 pounds overweight, and in many cases are diabetic," said Patricia DiLorenzo, professor of psychology at Binghamton University. "It's life or death for them."

RYGB makes the stomach much smaller into what is called a pouch. This pouch bypasses part of the small intestine, so when you eat, your food enters a smaller stomach and empties right into the small intestine. This means that people cannot eat large meals anymore, leading to weight loss. However, taste and odor preferences are also known to change after surgery, and their potential involvement with the noted weight loss is a question of study.

DiLorenzo and her research team investigated food and odor preference changes following RYGB and compared them to changes in body-mass index post-surgery. To assess food and odor preferences before and after surgery, patients filled out the Self-Assessment Manikin, which assesses pleasure and arousal responses to an object. Patients were presented with pictures of foods representing the five taste qualities of sweet, sour, salty, bitter and umami, as well as four odors. They were then asked to rate their preferences. BMI data were collected before and after surgery.

"Most people before their surgery, their favorite foods are just what you'd expect -- ice cream, French fries, burgers, pizza," said DiLorenzo. "But afterwards, their favorite food was salad, for example. Twenty percent of people said that their favorite foods were vegetables. Those people - the ones who said they changed their taste preferences - lost the most weight."

DiLorenzo and her team also found that people who liked coffee more post-surgery were also the people that lost the most weight. Coffee and vegetables share a bitter flavor, indicating that post RYGB surgery, some patients' taste preferences shifted from high-fat and sweet foods to ones where bitter tastes were less aversive. Patients who experienced this effect lost the most weight and had lower BMIs in the long run after surgery.

However, these altered food preferences generally trend back towards pre-surgery preferences over time. Additionally, the rate of weight loss lessens as time increases post-surgery.

"The lion's share of the weight is lost in the first year," said DiLorenzo. "After that, your weight stabilizes."

Despite the risk for some patients to regain weight post-surgery, the majority of patients successfully lose and keep the weight off.

"People have the view that most people gain the weight back after RYGB surgery, and that's not true," said DiLorenzo. "Eighty percent of the people keep the weight off. In Western medicine, this is the most effective treatment for obesity."

The full paper, "Taste and odor preferences following Roux-en-Y surgery in humans," was published in PLOS One.

Credit: 
Binghamton University

An innovative procedure improves the control of liquid intake during haemodyalisis

The research was conducted over a period of six months with a group of 36 patients in the Haemodyalisis Unit of the General University Hospital of Alicante and three nurses who had received training in solution-focussed communication.

The study, conducted in collaboration with María del Carmen Neipp (Miguel Hernández University of Elche), Maite García-Moreno (Hospital Complex of Navarre, CHN) and Inés González-Sánchez (General University Hospital of Alicante and the Cardenal Herrera University of Elche), has been published recently in the Journal of Advanced Nursing. It will shortly be replicated at two hospitals in La Rioja, so both nurses and kidney specialists will undergo training.

The question that the research aims to address is how to facilitate the reduction in the intake of liquid (and food) of certain patients on haemodyalisis who have problems in achieving this, "something that the majority find tremendously difficult and uncomfortable, in particular during these hot months," said Beyebach. The aim is to ensure that the weight gain between one session and the next should be the indispensable minimum and that, therefore, the work of the machine that is purifying the blood should take the shortest possible time. Various pieces of research have shown that in that way not only is the comfort of the haemodyalisis sessions increased, the life quality of the patients is improved, and their survival extended.

Changing the communicative style in order to achieve results

"It is a pilot study, not controlled and carried out on a small sample, but which explores an innovative alternative that no one has studied until now and which is pointing to some promising results," stressed the researcher. Normally, as he explained, to get the patient to reduce his/her intake, techniques such as the therapy or psychoeducation of the patients themselves are tried but they often fail to achieve the desired results. "It is necessary to empathise with the difficulties facing the patients and to reinforce positive behaviour, each patient's own resources," he said. "You also have to bear in mind that many of these patients have been waiting for a transplant for years and their moods are close to depression, so merely instructive communication is of no use whatsoever," he said.

The research published highlights the role of nurses as agents of change, since it is the healthcare personnel who are more directly in contact with the person affected and who develop a bond with them. "The study published now suggests that by improving the style of communication with the patients, significant results can be achieved and that is what we want to demonstrate ultimately with the next study that we will be conducting in La Rioja," said Beyebach.

Credit: 
Elhuyar Fundazioa

Geologists reveal ancient connection between England and France

video: This animation explains new research from the University of Plymouth into how three ancient land masses collided to form the British Isles.

Image: 
University of Plymouth

The British mainland was formed from the collision of not two, but three ancient continental land masses, according to new research.

Scientists have for centuries believed that England, Wales and Scotland were created by the merger of Avalonia and Laurentia more than 400 million years ago.

However, geologists based at the University of Plymouth now believe that a third land mass - Armorica - was also involved in the process.

The findings are published in Nature Communications and follow an extensive study of mineral properties at exposed rock features across Devon and Cornwall.

They reveal a clear boundary running across the two counties, with areas north of it sharing their geological roots with the rest of England and Wales but everything south being geologically linked to France and mainland Europe.

Among other things, scientists believe the research explains the abundance of tin and tungsten in the far South West of England - metals also found in Brittany and other areas of mainland Europe, but not so evident in the rest of the UK.

The research's lead author, Lecturer in Igneous Petrology Dr Arjan Dijkstra, said: "This is a completely new way of thinking about how Britain was formed. It has always been presumed that the border of Avalonia and Armorica was beneath what would seem to be the natural boundary of the English Channel. But our findings suggest that although there is no physical line on the surface, there is a clear geological boundary which separates Cornwall and south Devon from the rest of the UK."

For the research, Dr Dijkstra and Masters student Callum Hatch (now working at the Natural History Museum) visited 22 sites in Devon and Cornwall that were left exposed following geological events, such as underground volcanic eruptions. These took place around 300 million years ago and brought magma from depths of 100 km to the Earth's surface.

They took rock samples from each site, subjecting them to detailed chemical analysis in the lab using X-ray fluorescence (XRF) spectrometry.

The samples were also then dissolved in acid in order to conduct a more intensive isotopic analysis, with scientists examining the levels of two elements - strontium and neodymium - to understand the full history of the rocks.

These findings were then compared with previous studies elsewhere in the UK and mainland Europe, with the results showing the clear boundary running from the Exe estuary in the East to Camelford in the west.

"We always knew that around 10,000 years ago you would have been able to walk from England to France," Dr Dijkstra added. "But our findings show that millions of years before that, the bonds between the two countries would have been even stronger. It explains the immense mineral wealth of South West England, which had previously been something of a mystery, and provides a fascinating new insight into the geological history of the UK."

Credit: 
University of Plymouth

RUDN biochemists found out how ROS affect cisplatin resistance in ovarian cancer cells

image: The mechanism of oxidative stress.

Image: 
Courtesy of Allen Dressen

Long-term use of anti-cancer drugs treatment may lead to the development of multiple drug resistance reducing the efficiency of chemotherapy. Scientists are aware of several mechanisms for drug resistance development in tumor cells. They are to a great extent associated with the activation of proteins that get medicinal drugs out of cells, as well as with changes in the genes controlling cell survival and programmed cell death (apoptosis). One of the least studied mechanisms of drug resistance development is connected with the influence of reactive oxygen species (ROS) that are formed during cell life and can destroy organic molecules.

RUDN biochemists studied the mechanism of drug resistance development in ovarian cancer cells under treatment with cisplatin. The researchers found out that the process was connected with increased expression (production of proteins coded by DNA molecules) of genes of key antioxidant enzymes (i.e. destroying ROS): Mn-superoxide dismutase, catalase, glutathione peroxidase-1, hemoxygenase-1, as well as reduced expression of the enzyme NADPH-oxidase, which is responsible for ROS generation in the cell.

In the normal state there is a balance between the formation and destruction of ROS. Any changes in this balance may cause damage in the internal structure of the cells leading to number of diseases including cancer. On the other hand, high concentrations of ROS may also lead to the death of cancer cells. This effect is used in cancer therapy, and cisplatin may operate on a similar principle.

In their work the scientists used the real time RT-PCR method and western blotting to evaluate gene expression. The discovered redox-dependent mechanism of drug resistance development shows how well tumor cells can adapt to negative environmental conditions. The mechanism helps healthy cells survive, but in case of malignant tumors hinders their treatment.

"We found that under treatment of the ovarian cancer cells with cisplatin a new mechanism is triggered, changing the balance between generation and elimination of ROS; it is called as the adaptive antioxidant response. The studied mechanism of drug resistance development would help create new combined methods for ovarian cancer treatment," said Elena Kalinina, the author of the study, doctor of biological science, and professor of RUDN Institute of Medicine.

Credit: 
RUDN University

Aerial survey reveals great diversity & abundance in NE Canyons Marine National Monument

BOSTON, MA (Sept. 13, 2018) -- Airborne marine biologists were amazed by the sheer abundance and diversity of large marine wildlife in their recent aerial survey of the Northeast Canyons and Seamounts Marine National Monument, the only marine national monument on the East Coast, about 150 southeast of Cape Cod. Scientists with the Anderson Cabot Center for Ocean Life at the New England Aquarium documented more than 600 animal sightings in just four hours, including a "superpod" of about 250 common dolphins and a rare sighting of a giant manta ray.

The researchers, aboard a small, four-seat airplane, saw the equivalent of three animal sightings every minute. They also spotted hundreds of Risso's dolphins, some rarely-seen beaked whales, pods of bottlenose dolphins, and the bizarre-looking giant ocean sunfish, also known as the mola mola. The 605-total seen during the September survey nearly doubles the survey team's previous sighting record of 339 animals in April 2018.

"This was an amazing number of animals to see in such a short period of time and the highest count we've seen so far in our surveys," said Dr. Ester Quintana, head of the survey team. "The marine monument is known as the 'Serengeti of the sea' for a reason."

The Northeast Canyons and Seamounts Marine National Monument is a critical hotspot of biodiversity on the edge of the continental shelf where the shallow seas off of New England drop sharply into the deep waters of the northwestern Atlantic. On September 16, the monument will celebrate its two year anniversary. In 2016, President Obama designated three underwater canyons that are deeper than the Grand Canyon, and four seamounts as tall as the Rockies, as the first American marine national monument in Atlantic waters. At the moment, is still the most strongly protected area in U.S. Atlantic waters. However, in 2017, Secretary of the Interior Ryan Zinke recommended to President Trump has recommended weakening the area's protections.

"It's simply impossible to overstate the uniqueness of this habitat and its value as the most protected region in the U.S. Atlantic," said Vikki Spruill, President and CEO of the New England Aquarium. "And let's be clear about what it protects: Us. Our way of life. Our values. Our future. The monument should be here to stay."

Given the great distance offshore, documenting the marine life in the Northeast Canyons and Seamounts is a challenge. During the 4-hour aerial survey, the team spotted 335 common dolphins, 30 bottlenose dolphins, 2 beaked whales, 3 ocean sunfish (mola mola), and a giant manta ray. The manta was an especially unexpected sight because the species is very rarely seen this far north. All of the dolphin groups included many calves and juveniles, reinforcing observations that the monument is a nursery area for several species.

This was the fourth in a series of aerial surveys of the monument that began in summer 2017, and the number of sightings by the scientists during this survey was higher than any other, nearly double the number of animals observed last fall.

Credit: 
New England Aquarium

The art of storytelling: researchers explore why we relate to characters

image: A figure showing the brain scans of study participants who were asked to tell stories using different forms.

Image: 
McMaster University

For thousands of years, humans have relied on storytelling to engage, to share emotions and to relate personal experiences. Now, psychologists at McMaster University are exploring the mechanisms deep within the brain to better understand just what happens when we communicate.

New research published in the Journal of Cognitive Neuroscience, suggests that no matter how a narrative is expressed--through words, gestures or drawings--our brains relate best to the characters, focusing on the thoughts and feelings of the protagonist of each story.

"We tell stories in conversation each and every day," explains Steven Brown, lead author of the study, who runs the NeuroArts Lab at McMaster and is an associate professor in the Department of Psychology, Neuroscience ang Behaviour. "Very much like literary stories, we engage with the characters and are wired to make stories people-oriented."

An important question researchers set out to answer was how, exactly, narrative ideas are communicated using three different forms of expression, and to identify a so-called narrative hub within the brain.

For the study, researchers scanned the brains of participants using fMRI and presented them with short headlines. For example, "Surgeon finds scissors inside of patient" or "Fisherman rescues boy from freezing lake."

They were then asked to convey the stories using speech, gestures or drawing, as one would do in a game of Pictionary. The illustrations were created using an MRI-compatible drawing tablet which allowed the participants to see their drawings.

Researchers found that no matter what form of story telling the participants used, the brain networks that were activated were the "theory-of-the-mind" network, which is affected by the character's intentions, motivations, beliefs, emotions and actions.

"Aristotle proposed 2,300 years ago that plot is the most important aspect of narrative, and that character is secondary," says Brown. "Our brain results show that people approach narrative in a strongly character-centered and psychological manner, focused on the mental states of the protagonist of the story."

Next, researchers hope to compare narration and acting to determine what happens when we tell stories in the third-person or portray characters in the first-person.

Credit: 
McMaster University

Dietary fiber reduces brain inflammation during aging

URBANA, Ill. - As mammals age, immune cells in the brain known as microglia become chronically inflamed. In this state, they produce chemicals known to impair cognitive and motor function. That's one explanation for why memory fades and other brain functions decline during old age. But, according to a new study from the University of Illinois, there may be a remedy to delay the inevitable: dietary fiber.

Dietary fiber promotes the growth of good bacteria in the gut. When these bacteria digest fiber, they produce short-chain-fatty-acids (SCFAs), including butyrate, as byproducts.

"Butyrate is of interest because it has been shown to have anti-inflammatory properties on microglia and improve memory in mice when administered pharmacologically," says Rodney Johnson, professor and head of the Department of Animal Sciences at U of I, and corresponding author on the Frontiers in Immunology study.

Although positive outcomes of sodium butyrate - the drug form - were seen in previous studies, the mechanism wasn't clear. The new study reveals, in old mice, that butyrate inhibits production of damaging chemicals by inflamed microglia. One of those chemicals is interleukin-1β, which has been associated with Alzheimer's disease in humans.

Understanding how sodium butyrate works is a step forward, but the researchers were more interested in knowing whether the same effects could be obtained simply by feeding the mice more fiber.

"People are not likely to consume sodium butyrate directly, due to its noxious odor," Johnson says. "A practical way to get elevated butyrate is to consume a diet high in soluble fiber."

The concept takes advantage of the fact that gut bacteria convert fiber into butyrate naturally.

"We know that diet has a major influence on the composition and function of microbes in the gut and that diets high in fiber benefit good microbes, while diets high in fat and protein can have a negative influence on microbial composition and function. Diet, through altering gut microbes, is one way in which it affects disease," says Jeff Woods, professor in the Department of Kinesiology and Community Health at U of I, and co-author on the study.

Butyrate derived from dietary fiber should have the same benefits in the brain as the drug form, but no one had tested it before. The researchers fed low- and high-fiber diets to groups of young and old mice, then measured the levels of butyrate and other SCFAs in the blood, as well as inflammatory chemicals in the intestine.

"The high-fiber diet elevated butyrate and other SCFAs in the blood both for young and old mice. But only the old mice showed intestinal inflammation on the low-fiber diet," Johnson says. "It's interesting that young adults didn't have that inflammatory response on the same diet. It clearly highlights the vulnerability of being old."

On the other hand, when old mice consumed the high-fiber diet, their intestinal inflammation was reduced dramatically, showing no difference between the age groups. Johnson concludes, "Dietary fiber can really manipulate the inflammatory environment in the gut."

The next step was looking at signs of inflammation in the brain. The researchers examined about 50 unique genes in microglia and found the high-fiber diet reduced the inflammatory profile in aged animals.

The researchers did not examine the effects of the diets on cognition and behavior or the precise mechanisms in the gut-brain axis, but they plan to tackle that work in the future as part of a new, almost-$2 million grant from the National Institute on Aging, part of the National Institutes of Health.

Although the study was conducted in mice, Johnson is comfortable extending his findings to humans, if only in a general sense. "What you eat matters. We know that older adults consume 40 percent less dietary fiber than is recommended. Not getting enough fiber could have negative consequences for things you don't even think about, such as connections to brain health and inflammation in general."

Credit: 
University of Illinois College of Agricultural, Consumer and Environmental Sciences

Social class determines how the unemployed talk about food insecurity

image: Figure 1. A representation of unemployment photograph of the interior of the participant's (Cherry Blossom) home refrigerator.

Image: 
“Cherry Blossom” (pseudonym), 2012

"Cherry Blossom," a 39-year-old woman worked as a hotel breakfast bar hostess around the start of the "Great Recession." She lost her job, and three years later she was being interviewed to assess her struggles with her unemployment. She talked about her empty refrigerator.

A study by University of Missouri researchers that began as a survey of unemployment following the recession, led researchers to discover that participants used food to describe their circumstances.

In lower classes, those surveyed tended to think about food as survival; they experienced food insecurity, but rarely asked for food from family because of perceived stigmas. People from the middle classes tended to use language to "blur" their relationship with food, making it challenging for the listener to know if they were experiencing food insecurity. As a result, they were unlikely to gain access to food resources to address food insecurity.

However, people interviewed in the upper classes talked about food as a networking tool, rarely considering its physical necessity. Researchers believe that, given that food insecurity crosses social class boundaries during economic downturns, and given the variety of differing responses to food insecurity, policymakers should consider all demographics and socio-economic backgrounds when forming policies that affect food insecurity.

"Food is the essence of social class -- the way we talk about it, the way we think about it," said Debbie Dougherty, professor of communication in the MU College of Arts and Science. "We usually think about hunger as something that's purely material, we also need to think about hunger as something communicative. Food discourses are embedded into the U.S. culture and can reveal social and cultural capital. Our study revealed ways in which the food narrative shows the lived experiences of those experiencing unemployment."

Using a method called Photovoice, researchers asked participants to take photos of their experiences to help explain and illustrate their unemployment. Those surveyed tend to become more active in the research process, and their photos offer another source of data.

The data were collected between 2012 and 2013, and participants were chosen from various demographic and socio-economic backgrounds. In their responses, 19 of 21 participants voluntarily spoke about food and food access. Several in lower and middle classes submitted photos of empty or barely stocked refrigerators, other talked of how difficult it could be to obtain food.

"What was surprising was those who were in the upper classes were good at obscuring their 'food drama,'" Dougherty said. "The privilege this group of people previously had -- that they thought of food only as a social or work function -- made it so that they didn't have to think about their lack of food -- they tended to maintain the fantasy of their lives by taking their laptops to the coffee shop and feigning work. Surprisingly, these are the people who get lost in the shuffle in the discussion of food insecurity."

Dougherty says that policymakers tend to think about food in regions -- as a geographically related problem. Dougherty and her team suggest that policymakers at local, state and national levels should be addressing food insecurity as a more diffused problem that encompasses different classes and different neighborhoods in our towns and cities.

"Our economy generally runs in 8 to 10-year cycles, so when we have an economic downturn, we need to be thinking more widely about distribution of food as opposed to thinking about it in these geographically narrow spaces," Dougherty said.

Credit: 
University of Missouri-Columbia

Gut microbes' role in mammals' evolution starts to become clearer

CORVALLIS, Ore. - An international collaboration led by Oregon State University scientists has made a key advance toward understanding which of the trillions of gut microbes may play important roles in how humans and other mammals evolve.

Researchers came up with a novel way of classifying the microbes - a taxonomy that groups them based on their ancestry and common distribution across mammals.

Findings were published this week in mBio.

Known as ClaaTU - short for cladal taxonomic units - the new algorithm and corresponding software sharpen and fine-tune the focus needed to clarify potential ecological or evolutionary mechanisms, said corresponding author Thomas Sharpton, a microbiology and statistics researcher in OSU's College of Science.

A clade is a group of organisms thought to have descended from a common ancestor.

"The gut microbiome matters to the health of mammals like humans and mice, so perhaps it also affects a mammal's ability to survive and reproduce in nature," said lead author Christopher Gaulke, a postdoctoral scholar in the College of Science. "If so, then the gut microbiome may influence how animals evolve such that individuals that carry the proper set of gut microbes are more likely to thrive."

Gaulke and Sharpton worked with collaborators in the OSU Department of Microbiology and College of Veterinary Medicine and at the University of Illinois and University of Quebec at Montreal to develop ClaaTU.

ClaaTU identifies microbial clades that manifest across multiple sets of mammal communities more frequently than expected by chance. Those that do - the ones that are "conserved" in the mammalian microbiome - possibly played and continue to play important roles for their hosts.

"Identifying gut microbes that link to mammalian evolution is the first step toward evaluating this bold idea that gut microbes influence evolution," Sharpton said. "We were able to uncover an expansive array of such microbes by using our new approach to compare microbiomes across mammalian species."

Another find: Humans living "Western lifestyles" - i.e., eating diets high in fat and low in fiber - tend strongly away from gut microbiome clade diversity when compared with non-Western humans and non-human primates. That suggests changes in lifestyle, environment and/or genetics that go along with Westernization are connected with the conservation of gut bacterial clades.

"It's an observation that elevates concern that industrialization may have impacted the gut microbiome that our human ancestors evolved to harbor," Sharpton said. "But future work will be needed to determine if the gut microbes identified in this study actually affect mammalian physiology in a way that could matter to their evolution."

Credit: 
Oregon State University

Hemidystrophic thorax mimicking scoliosis

Pectus Excavatum (PE), Pectus Carinatum (PC), Poland Syndrome (PS), Sunken Chest Deformity (SCD), Barrel Chest Deformity (BCD), Body Builder Deformity (BBD), and Long Upper Chest Wall (LCW) are Chest Wall Deformities (CWDs) that are documented in the medical literature. A scoliotic CWD, unlike PE or PC, does not only concern the anterior chest wall but is an expression of thoracic torsion due to the scoliotic torsion of the spine and adjacent ribs. Typically, we find a rib hump dorsally on the convex side of the curvature when the thoracic spine is affected and a lumbar hump dorsally on the convex side of a lumbar curve when the lumbar spine is affected. When thoracic scoliosis is analysed more closely using a 3D scan of the trunk, we typically find a rotation of the trunk backward on the rib hump side and a rotation forward on the thoracic concave side.

A new form of CWD has been found by the first author: As has been shown in this case series, a Hemidystrophic Thorax (HDT) was found in patients with slight scoliosis and in cases without scoliosis (Cobb angle of 10° or less). The condition of HDT may lead to significant rib humps, which mimic scoliosis. According to our case series, mild scoliosis can also be associated with HDT. HDT, according to the cases presented in this study, seems to be a relatively benign deformity. Long-term observations are necessary before a final conclusion can be drawn with respect to prognosis.

Credit: 
Bentham Science Publishers

Newspaper reporting of NHS Cancer Drugs Fund misleading

An analysis of UK newspaper reporting of the NHS Cancer Drugs Fund (CDF) between 2010 and 2015 shows that despite some critical analysis, the mostly positive stories are likely to have contributed to the CDF's continuation, despite mounting evidence of its ineffectiveness. Close to £1.4 billion in total has been spent through the CDF which has subsequently been reconfigured and is now under the control of the National Institute for Health and Care Excellence (NICE).

The research, published by the Journal of the Royal Society of Medicine, was based on stories in nine national newspapers in the UK. As well as looking at whether stories were positive, neutral or negative, the researchers from the Institute of Cancer Policy, King's College London and the University of Bristol measured the influence of each newspaper's reporting of the CDF, based on circulation and number of stories.

Lead researcher Dr Grant Lewison said: "Our analysis showed there was three times as much coverage in favour of the CDF as against. Media reports did not scrutinise the discrepancy between those drugs available through the CDF and those diseases with the greatest health burden, the toxicities of the medicines, nor the opportunity cost of the CDF for other cancer treatments." He added: "Access at any cost was a clear totem around which the pro-CDF media based its coverage. The views of experts who pointed out the intrinsic unfairness of the CDF or the lack of efficacy of, and unpleasant side effects from, many of the drugs seem to have counted for little against the human interest stories of individual patients."

The preponderance of stories on chemotherapy, compared with surgery and radiotherapy, has, according to the researchers, probably contributed to a strong public perception that the best way to help cancer patients and improve outcomes is to allow them access to new (and expensive) medicines, whose performance is often hyped and gives rise to unreasonable expectations.

The study also draws attention to the failure of many public organisations, including charitable research funders in the UK, to publicise the shortcomings of the CDF. Co-researcher Dr Charlotte Chamberlain, a palliative care doctor, said: "By uncritically reporting the assumed benefit of increased access to anti-cancer drugs we do our patients a disservice. The price of the hype for pharmaceuticals in the treatment of cancer may cost patients in a number of ways: through potential side effects, by offering false hope without 'meaningful clinical benefit', and preventing investigation of, and investment in, other treatment approaches. In an era of 'alternative facts', journalists, health professionals and cancer charities have a responsibility to interrogate claims of 'the next big thing'."

Credit: 
SAGE

Endocrine disruption advocate Fred vom Saal says BPA may cause diabetes

image: Fred vom Saal and his team found that the Food and Drug Administration-approved "safe" daily exposure amount of BPA may be enough to have implications for the development of Type 2 diabetes and other metabolic diseases.

Image: 
MU News Bureau

In a first study of its kind study, researchers have found that a common chemical consumers are exposed to several times a day may be altering insulin release. Results of the study, led by scientists at the University of Missouri, indicate that the Food and Drug Administration-approved "safe" daily exposure amount of BPA may be enough to have implications for the development of Type 2 diabetes and other metabolic diseases.

"Bisphenol A is an endocrine disrupting chemical that is used to manufacture thermal paper receipts, plastics and a wide range of consumer products," said Frederick vom Saal, an endocrinologist and Curators' Professor in the Division of Biological Sciences in the MU College of Arts and Science, and a co-author on the study. "Experiments with human and mouse pancreatic cells have revealed that low-dose exposure to BPA, in the presence of glucose, triggers an insulin response. We wanted to test the potential effects of BPA in humans to see whether it held true."

In both of the studies, subjects were orally administered a safe dose of BPA, which led to the same amount of BPA in their blood that customers might encounter by handling a cash register receipt; or, the same subjects received a placebo exposure for comparison. Insulin responses were then assessed through an oral glucose tolerance test in the first experiment or a hyperglycemic clamp in the second experiment. Results of both studies showed that BPA altered insulin release relative to the placebo exposure in the subjects. In animal studies repeated BPA exposure resulted in insulin resistance.

"This exploratory study needs to be replicated because it suggests that BPA exposure at a dose considered safe by U.S. regulators could alter glucose-stimulated insulin responses in humans," vom Saal said. "Our study is an initial step toward investigating whether exposure to endocrine disrupting chemicals, such as BPA, contributes to insulin resistance and eventually Type 2 diabetes."

Credit: 
University of Missouri-Columbia

Open insulin, 'DIY bio' and the future of pharma

The development, manufacture and sale of pharmaceutical drugs in the United States is a complex landscape involving intellectual property and strict federal regulations.

But according to Colorado State University scientists, the status quo of the U.S. pharmaceutical market may soon be turned on its head. That's due in part to a growing community of do-it-yourself "biohackers" who are disrupting business-as-usual for pharmaceutical discovery, development and distribution.

A Sept. 13 perspective piece in Trends in Biotechnology frames these emerging issues, and predicts how the pharmaceutical industry, and the U.S. regulatory environment, will need to change in response. The paper's authors are Jean Peccoud, the Abell Chair in Synthetic Biology in the Department of Chemical and Biological Engineering; Jenna Gallegos, a postdoctoral researcher in the Department of Chemical and Biological Engineering; and collaborators from Bio-Link Australia, Woodrow Wilson International Center for Scholars and Boston University School of Public Health. Peccoud is also a faculty member in the School of Biomedical Engineering at CSU.

As the prices of many medicines continue to rise, new models of funding, research and drug development have emerged as part of what the authors call a "novel innovation ecosystem." Most notably, this ecosystem involves drug manufacturing at smaller, more personalized scales.

"Key drugs are still too expensive," Peccoud said. "People don't have access to them, so what if they can make it themselves? What do we do about that?"

The authors use the California-based Open Insulin Project as a case study of how the DIY bio movement might shape the future of medicine. Founded in 2015, the project's creators are trying to increase competition in the insulin market by developing and releasing an open-source protocol for manufacturing off-patent insulin.

Why does the Open Insulin Project exist in the first place? Insulin is 100 years old, but it remains prohibitively expensive for many patients, with some uninsured patients paying up to $400 a month for this life-saving medicine. People are angry, and in some cases, people are dying, from lack of access to affordable insulin.

The U.S. regulatory system today favors existing manufacturers of biologic drugs like insulin. Biologics are drugs made from a living organism, as opposed to small-molecule drugs, such as aspirin, which are synthesized chemically. When making off-patent small-molecule drugs, a competing company need only demonstrate that they've made pure aspirin. But biologic drugs are more difficult to control for quality; thus competing companies have to do expensive human clinical trials - not worth the $250 million price tag, if they can't even file for a patent to recoup their investments.

While the structure of human insulin is no longer patent protected, the handful of large companies that produce insulin continue to market "insulin analogues" that are supposedly improved varieties of plain insulin. The authors note that the medical benefits of these new versions of insulin are debatable.

That's where the biohackers come in. If the Open Insulin Project succeeds in developing a protocol for "home-brewed" insulin, they'll need to avoid violating patent-protected methods of manufacturing insulin. But biohackers making insulin for their own, personal use wouldn't need to worry about patent infringement ­- although safety considerations are certainly at play.

"It would be prudent for regulators to engage patients and innovators in community bio-labs to design adaptive oversight that fosters an ethos of responsibility," the authors say.

The real challenge for Open Insulin Project biohackers, should they want to enable competing pharmaceutical companies to sell off-patent insulin, will be regulation, the authors say. The success of the project will be severely limited by the cost of regulatory approvals, which include proving biological consistency, safety and possibly efficacy.

If such new models of insulin production are to succeed, they will depend on alternative approval processes, the authors say. If biosimilarity of biohacked insulin could be confirmed without clinical trials, the cost of development would dramatically decrease. This could be achieved through smaller-scale, decentralized manufacturing. And the technology already exists; microbioreactors that are capable of producing smaller doses of biologics have been developed in university labs.

"In short, the status quo has got to change," Gallegos said. "We can't address the issues if we don't acknowledge them."

Credit: 
Colorado State University

Researchers managed to prevent the disappearing of quantum information

The properties of quantum mechanics can be utilised, for example, in technology and encrypting messages, but the disadvantage is the occasional disappearing of information. For the first time, a research group consisting of Finnish and Chinese scientists has found a way to fully control the information escaping the qubit.

Quantum mechanics describes the behaviour of minute physical systems, such as photons. Photons are also used as the quantum-mechanical equivalents to classic bits, qubits. Quantum-mechanical properties, such as superpositions and quantum entanglement, can be utilised in technology, effective calculation, and encrypting messages.

- These properties are very fragile and usually disappear rapidly as a result of so-called decoherence and quantum noise. As a result, the information carried by the qubit leaks into the environment and disappears completely. Both in terms of basic research and technological applications, it is vital to understand how quantum information disappears, and to find ways to control the behaviour of quantum systems and prevent the disappearing of information, says University Research Fellow Jyrki Piilo from the Department of Physics and Astronomy of the University of Turku.

For the first time, the research groups of Turku Centre for Quantum Physics at the University of Turku and the University of Science and Technology of China have showed both in theory and experimentally how the information flowing from the qubit into the environment can be controlled. The groups also proved that the disappearing of quantum information can even be prevented in some cases.

- Our work is based on exploring the properties of photons and their careful control in the laboratory. In order to achieve the result, it was crucial to first theoretically understand how to create an adequate connection between the polarisation and frequency of the photon in the beginning, and then implement it in the laboratory using extremely refined and challenging experimental techniques. When the photon serving as the qubit - and its environment - has first been initialised into the right state, it is then possible to arbitrarily control how the information carried by the qubit disappears or is retrieved, and it can even be trapped or protected from disturbances, explains Professor Chuan-Feng Li from the University of Science and Technology of China.

According to Li, the results of the study are significant for basic research and developing quantum technologies.

- Individual photons can now also be used for simulating the behaviour of several other quantum-mechanical systems, including magnetic spin systems. Also, the results provide fundamental information on the behaviour of open quantum systems in different environments. Moreover, the results enable the manufacturing of artificial environments for qubits. These environments are not found elsewhere naturally, but they can be produced in the laboratory, says Piilo.

The researchers from Turku Centre for Quantum Physics at the University of Turku were responsible for the theoretical part of the study, and Professor of Theoretical Physics Sabrina Maniscalco and Doctoral Candidate Henri Lyyra participated in the study alongside Piilo. Professors Chuan-Feng Li and Guang-Can Guo from the University of Science and Technology of China were responsible for the experimental implementation of the study together with their research groups including co-first author Zhao-Di Liu.

Credit: 
University of Turku