1,201 news posts in Mind and body

Life sciences

02 Nov 2022

Italian researchers discover new recipe for extending shelf life of fresh pasta by 30 days

By Peter Rejcek, science writer Image credit: Raimunda Losantos / Shutterstock.com Pasta is one of the most popular food staples in the world, but fresh pasta has a limited shelf life. Scientists in Italy have cooked up a novel process for preventing or delaying spoilage by changing packaging protocols, as well as adding antimicrobial probiotics to the dough. Not only does this new method extend storage of fresh pasta by 30 days, it helps reduce food waste. Pasta is serious business in Italy, with reportedly more than 300 specific forms known by some 1,300 names. There is even a 55-year-old ‘pasta law’ that governs its production and manufacture. But that doesn’t mean the beloved food staple is shut off from innovation. ► Read original article► Download original article (pdf) Now, Italian researchers have cooked up a new process for extending the shelf life of fresh pasta by 30 days, using a novel packaging process that also involves applying bioprotective probiotic cultures to the dough. They published this new recipe for better preserving fresh pasta in the journal Frontiers in Microbiology. The problem with fresh pasta Most fresh pasta sold in stores today is produced through an industrial process that includes heat-treating the […]

Humanities

26 Oct 2022

‘Virtual autopsy’ identifies a 17th century mummified toddler hidden from the sun

by Angharad Brewer Gillham, Frontiers science writer Image: Riderfoot/Shutterstock.com Scientists used a ‘virtual autopsy’ to examine the mummy of a child found in an aristocratic family crypt, revealing him most probably as Reichard Wilhelm (1625-1626). Despite his wealthy background, the child experienced extreme nutritional deficiency and a tragically early death from pneumonia. A team of scientists based in Germany have examined a 17th century child mummy, using cutting-edge science alongside historical records to shed new light on Renaissance childhood. The child was found in an aristocratic Austrian family crypt, where the conditions allowed for natural mummification, preserving soft tissue that contained critical information about his life and death. Curiously, this was the only unidentified body in the crypt, buried in an unmarked wooden coffin instead of the elaborate metal coffins reserved for the other members of the family buried there. The team, led by Dr Andreas Nerlich of the Academic Clinic Munich-Bogenhausen, carried out a virtual autopsy and radiocarbon testing, and examined family records and key material clues from the burial, to try to understand who the child was and what his short life looked like. “This is only one case,” said Nerlich, lead author of the paper published today […]

Life sciences

24 Oct 2022

CO2 ventilation breakthrough could turn city rooftops into bumper vegetable gardens

by Angharad Brewer Gillham, Frontiers science writer Image: Shutterstock.com Scientists find that expelled air from ventilation systems can make corn and spinach grow taller and larger, recycling CO2-rich indoor air to fertilize edible plants. As the world’s cities grow, the hunt is on for ways to make them greener, more sustainable, and more livable. Rooftop farms and gardens that take advantage of underutilized roof space are a popular option, providing new food resources while simultaneously cooling the surrounding area, increasing building insulation, and improving air quality. But the conditions on rooftops — greater solar radiation, more wind exposure, lesser soil moisture — often mean that plants are smaller and less healthy. A team led by Dr Sarabeth Buckley, now at the University of Cambridge, theorized that repurposing the CO2 from building exhaust as a kind of fertilizer might help counter some of these challenges. To explore this, they grew corn and spinach on the roof of a campus building at Boston University. “We wanted to test whether there is an untapped resource inside buildings that could be used to make plants grow larger in rooftop farms,” said Buckley, whose team named their experimental garden BIG GRO and published their work […]

Life sciences

21 Oct 2022

Secret behind spectacular blooms in world’s driest desert is invisible to human eyes

By Mischa Dijkstra, Frontiers science writer The 2021 ‘desierto florido’ near Caldera, Chile. The purple flowers are the pussypaw Cistanthe longiscapa (family Montiaceae), the object of this study. Image credit: Oven Pérez-Nates A ‘desierto florido’ mass bloom happened in the northern Atacama desert in 2021, which was even visible from space. Researchers used advanced imaging techniques to measure the variation in flower color and pattern for the dominant species, the pussypaw Cistanthe longiscapa. They found that this variation is much greater when viewed by the UV-sensitive eyes of hymenopteran pollinators, and caused by differences in the mix of betalain pigments in the petals. Evolution is probably ongoing, driven by the species-specific visual preferences of pollinators, which could ultimately lead to new species. The Atacama desert, which stretches for approximately 1,600 km along the western coast of the cone of South America, is the driest place on Earth. Some weather stations there have never recorded rainfall throughout their existence. But it‘s far from barren: many species live here that occur nowhere else, adapted to its extreme conditions. And approximately every five to 10 years, from September to mid-November, the Atacama hosts one of the most spectacular sights of the natural world: […]

Life sciences

07 Oct 2022

Scientists peel back ancient layers of banana DNA to reveal mystery ancestors

By Mischa Dijkstra, Frontiers science writer Researchers compare the genomes of more than 200 wild and domesticated varieties of bananas and show that three extra ancestors, either subspecies or distinct species, must have been involved in the domestication process. They also deduce the geographic regions in Australasia where these mystery ancestors lived. If they haven’t gone extinct, they are likely threatened and it’s urgent to find and protect them, to preserve genetic diversity that could help breed better bananas. Bananas are thought to have been first domesticated by people 7,000 years ago on the island of New Guinea. But the domestication history of bananas is complicated, while their classification is hotly debated, as boundaries between species and subspecies are often unclear. Now, a study in Frontiers in Plant Science shows that this history is even more complex than previously thought. The results confirm that the genome of today’s domesticated varieties contains traces of three extra, as yet unknown ancestors. ► Read original article► Download original article (pdf) “Here we show that most of today’s diploid cultivated bananas that descend from the wild banana M. acuminata are hybrids between different subspecies. At least three extra wild ‘mystery ancestors’ must have contributed to this […]

Health

30 Sep 2022

‘Love hormone’ revealed to have heart healing properties

By Mischa Dijkstra, Frontiers science writer Image: Shutterstock.com Researchers show for the first time that the neurohormone oxytocin has a previously unsuspected function in both zebrafish and human cell cultures: it stimulates mature cells in the epicardium of the heart to become stem-like cells, which can replace heart cells lost after damage. This discovery could one day be used to stimulate the regeneration of the human heart after a heart attack. The neurohormone oxytocin is well-known for promoting social bonds and generating pleasurable feelings, for example from art, exercise, or sex. But the hormone has many other functions, such as the regulation of lactation and uterine contractions in females, and the regulation of ejaculation, sperm transport, and testosterone production in males. Now, researchers from Michigan State University show that in zebrafish and human tissue cultures, oxytocin has yet another, unsuspected, function: it stimulates stem cells derived from the heart’s outer layer (epicardium), to migrate into its middle layer (myocardium) and there develop into cardiomyocytes, muscle cells that generate heart contractions. This discovery could one day be used to promote the regeneration of the human heart after a heart attack. The results are published in Frontiers in Cell and Developmental Biology. […]

Health

27 Sep 2022

4 articles you need to check out on the future of behavioral neuroscience

By Angharad Brewer Gillham, Frontiers science writer Image: Shutterstock.com How mice and rats help study depression Mice and rats are key model animals that help us understand how depression works and how to treat it. A huge number of people around the world live with this devastating disorder, but its causes and symptoms are so varied that it is hard to test new treatments and to reproduce experiments to prove those treatments work. Scientists writing in Frontiers in Behavioral Neuroscience reviewed the evidence for rodent models of depression and found that models imitating social stress or a disrupted early life have had some success. Meanwhile, models with behavioral stressors designed to induce helplessness are easily compared to other labs’ work but aren’t complex enough to model depression. A key element of depression is anhedonia, struggling to enjoy life, but this is extremely difficult to model in nonhuman animals. The most popular options available test preference for sweet tastes. The team concluded that the best option is to provide mice with a more naturalistic setting to live in, with more space to socialize and to follow their own inclinations. This helps avoid experimenter influence and allows spontaneous behavior from the mice […]

Life sciences

27 Sep 2022

Sugary poo could be used to lure destructive plant pests to their doom

By K.E.D. Coan, science writer Aggregation of spotted lanternflies, Lycorma delicatula. Image credit: Jana Shea / Shutterstock.com Spotted lanternflies send signals with their honeydew excretions, shows a new study. Scientists are researching how this damaging invasive species communicates in order to better manage the pest problem. This research provides knowledge of how these insects find each other, as well as the first evidence to show that these signals appear sex-specific. Spotted lanternflies communicate through their smelly excretions, called honeydew, reports a new study in Frontiers in Insect Science. This invasive species has been impacting crops in the northeastern US, but little is known about how these insects locate each other for reproduction or feeding. According to this latest research, the insects’ honeydew emits several airborne chemicals that attract other lanternflies. Surprisingly, these effects are sex-specific, which may be the first known case of such signals in insects known as planthoppers. “This research is important because the first step to managing any pest is to understand their biology and behavior,” said Dr Miriam Cooperband of the United States Department of Agriculture Animal and Plant Health Inspection Service, Plant Protection and Quarantine Division (USDA APHIS PPQ) in the US. “As we learn […]

Health

26 Sep 2022

New research shows self-injectable contraception can enable women to take charge of their reproductive health

By Allen Namagembe, PATH, Uganda and Dr Jane Cover, PATH, US Image: PATH/Will Boase Allen Namagembe is a clinical epidemiologist, a biostatistician, and a global expert on self-injection. She is the Uganda Deputy Project Director and M&E Lead on the Uganda Self-Injection Scale-Up project at PATH. Dr. Jane Cover is a Research and Evaluation Manager on PATH’s Sexual and Reproductive Health team and the PATH-JSI DMPA-SC Access Collaborative. Now, they explain their team’s two studies, published in Frontiers in Global Women’s Health, where they used a human-centered design approach to develop and implement a pilot self-injection program in Uganda. Their results show how the program can increase women’s contraceptive access and options. For some, the term ‘self-care’ might conjure up images of skincare routines, bubble baths, and meditation. But in public health, self-care refers to the ability of individuals to self-manage aspects of their health care with the goal of promoting and sustaining health, preventing disease, and managing illness or disability. Grounded in evidence, agency, and equity, self-care interventions are key components of a holistic primary health care system and can help fill gaps in access to essential health services. We both conduct research in the sexual and reproductive health […]

Health

26 Sep 2022

Rodents are reservoirs for life-threatening disease, finds new study

By Tania Fitzgeorge-balfour, science writer Image: Vicky Outen/Shutterstock.com Fungal diseases in the human population are on the rise, so it is important for health authorities to understand where these pathogens come from. A new study has searched for fungi in the lung tissues of small mammals and found fungal pathogens that cause diseases in humans. This suggests that these rodents can serve as reservoirs, agents of dispersal, and incubators of emerging fungal pathogens. Fungal diseases in the human population are on the rise, so it is important for health authorities to understand where these pathogens come from. A new study, published in Frontiers in Fungal Biology, has revealed that small mammals could act as a reservoir for these fungal infections. “Our analysis, which specifically focused on lung pathogens that cause disease in humans, detected a wide range of fungi in the lung tissues of small mammals,” said Paris Salazar-Hamm, first author of this research, of the University of New Mexico. “We found that many of the rodents we sampled from areas in the Southwestern US were harboring the type of fungi that can cause lung infections in humans, such as the fungus that leads to Valley Fever, a disease that […]

Health

23 Sep 2022

Bees, blue light, and bacteria in beetles’ ‘back pockets’: Most viewed articles of August 2022

Image: Shutterstock.com by Angharad Brewer Gillham, Frontiers science writer Each month, Frontiers shines a spotlight on some of the leading research across a wide range of topics. Here are just some of the highlights that resonated strongly with readers on our news site in the month of August. 1. Modern pesticides make it hard for bees to keep on the straight and narrow Research published in Frontiers in Insect Science showed that common pesticides affected bees’ brains so that they couldn’t orient themselves properly. Bees exposed to sulfoxaflor and imidacloprid were tested on their ability to respond to stimuli that tricked them into thinking they’d been blown off course, a situation which required them to use their optomotor response to reorient themselves. Compared to control bees, they performed very poorly, reacting inappropriately or not at all to the stimuli. The problem seems to be caused by damage to the nervous system, but the exact mechanism is unclear. Since bees need this optomotor response to travel between different sources of pollen, and since these insecticides are widely used, this is a source of significant concern. The authors tested the optomotor response in walking bees rather than flying bees, so further research […]

Life sciences

23 Sep 2022

Acquired immunity against random food allergens may protect some lucky people against Covid-19

By Conn Hastings, science writer A new study has investigated the potential of proteins in common foods to elicit protection against SARS-CoV-2. The researchers found that antibodies that bind SARS-CoV-2 can also bind to proteins in certain foods, viruses, vaccines, and common bacteria. The results suggest that exposure to such agents may confer some protective immunity to Covid-19, but further research is needed to confirm this. Why do some people become seriously ill with Covid-19, while others have no symptoms at all? The answer may lie in the proteins our immune system has previously been exposed to. A recent study in open-access journal Frontiers in Immunology finds that common foods, vaccines, bacteria and viruses may all prime our immune system to attack SARS-CoV-2, the virus that causes Covid-19. These agents all contain proteins that are similar to those found in SARS-CoV-2. As such, exposure to these proteins may train our immune system to respond when it encounters the virus. The study paves the way for new immunotherapies or vaccines that lead to stronger immunity against Covid-19. SARS-CoV-2: comfort in the familiar? SARS-CoV-2 is new, and the pandemic can make it feel like an alien invader from another planet. However, it […]

Life sciences

22 Sep 2022

Teams of sperm swim more smoothly against the current

By Peter Rejcek, science writer The physics of how sperm navigate their way to an egg in mammals, including humans, are not well understood. The tendency for sperm to cluster together as they make their way upstream through the thickish, elastic-like fluid of the female reproductive tract is more than just random behavior. Researchers have found biological benefits for sperm working together that may have implications for fertility studies. It turns out sperm go against the flow better when they swim together. Despite the popular idea that the fastest and fittest male reproductive cell is the one that wins the fertilization race, research has shown that spermatozoa often team up to navigate the female reproductive tract in a wide range of mammalian species. A new study published in the journal Frontiers in Cell and Developmental Biology offers some compelling reasons behind a newly identified clustering behavior. Previous research by the team, led by scientists out of North Carolina A&T State University and Cornell University, first discovered that sperm naturally pull together without attaching to each other when swimming in viscoelastic fluid. This is the type of fluid encountered by sperm migrating through the cervix and uterus to the oviduct where […]

Health

12 Sep 2022

Anti-diarrhea medication may help treat core autism symptoms

By Conn Hastings, science writer Image: Shutterstock.com There are currently no effective treatments for the core symptoms of autism spectrum disorder (ASD), such as difficulties with socializing and communicating. A new study uses a computer-based protein interaction network to identify whether existing drugs could provide a new treatment approach. The researchers discovered that a common anti-diarrheal drug may have potential in treating the social difficulties associated with ASD. Can you teach an old drug new tricks? Although drug treatments for the core symptoms of autism spectrum disorder (ASD) are not currently available, could an existing drug provide a new treatment, even if it previously had no association with ASD? This was the question asked by a new study in the journal Frontiers in Pharmacology. The researchers used a computer model that encompasses proteins involved in ASD and the way they interact. By looking at how different drugs affected proteins in the system, they identified potential candidates to treat it. A commonly used antidiarrheal drug called loperamide was the most promising candidate, and the researchers have an interesting hypothesis about how it may work to treat ASD symptoms. Some of the most common symptoms in ASD involve difficulties with social interaction […]

Humanities

09 Sep 2022

Scientific ‘detective work’ reveals South American mummies were brutally murdered

By Mischa Dijkstra, Frontiers science writer Sketch from the book by Reiss and Stübel (1887. The necropolis at Ancon) on the excavations and findings at the necropolis of Ancon, Peru. As it was typical at the end of the 19th/beginning of the 20th century, the content of graves was examined on the spot: mummy bundles and objects worth selling were taken away, invaluable items discarded. An international team used interdisciplinary techniques including 3D CT to do a ‘virtual autopsy’ on three mummies found in Peru and Chile, dating to between 900 and 1300 CE. They show that both male mummies had been murdered. These results highlight the wealth of archeological information that can be gained from mummies, as opposed to from skeletons. How frequent was violence in prehistoric human societies? One way to measure this is to look for trauma in prehistoric human remains. For example, a recent review of pre-Columbian remains found evidence of trauma from violence in 21% of males. So far, most studies of this kind focused on skulls and other parts of the skeleton, but a potentially richer source of information are mummies, with their preserved soft tissues. Now in a new study in Frontiers in […]