Endometriosis, a disease found in up to 10 per cent of women, has been enigmatic since it was first described. A new theory developed by researchers at Simon Fraser University suggests a previously overlooked hormone -- testosterone -- has a critical role in its development. The research could have direct impacts on diagnosis and treatment of the disease, signaling hope for women with endometriosis worldwide. The disease is caused by endometrial tissue growing outside of the uterus, usually in the pelvic area, where it contributes to pain, inflammation, and infertility. But why some women get it, and others do not, has remained unclear. The new research is based on recent findings that women with endometriosis developed, as fetuses in their mother's womb, under conditions of relatively ...

Admit it: Daily commutes - those stops, the starts, all that stress - gets on your last nerve. Or is that just me? It might be, according to a new study from the University of Houston's Computational Physiology Lab. UH Professor Ioannis Pavlidis and his team of researchers took a look at why some drivers can stay cool behind the wheel while others keep getting more irked. "We call the phenomenon 'accelerousal.' Arousal being a psychology term that describes stress. Accelarousal is what we identify as stress provoked by acceleration events, even small ones," said Pavlidis, ...

The use of multimode optical fibers to boost the information capacity of the Internet is severely hampered by distortions that occur during the transmission of images because of a phenomenon called modal crosstalk. However, University of Rochester researchers at the Institute of Optics have devised a novel technique, described in a paper in Nature Communications, to "flip" the optical wavefront of an image for both polarizations simultaneously, so that it can be transmitted through a multimode fiber without distortion. Researchers at the University of South Florida and at the University of Southern California collaborated ...

Your local city park may be improving your health, according to a new paper led by Stanford University researchers. The research, published in END ...

After years of criticism for their lack of diversity, programs for high achievers may not be adequately serving their Black and low-income students, a new study shows. "The potential benefits aren't equally distributed," said lead author and University of Florida College of Education professor Christopher Redding, Ph.D., who evaluated data from gifted programs in elementary schools nationwide. "The conversation up to this point has been about access, with less emphasis on how students perform once in gifted programs." While academic achievement gains for students overall were modest -- going from ...

UNIVERSITY PARK, Pa. -- Log on to any app store, and parents will find hundreds of options for children that claim to be educational. But new research suggests these apps might not be as beneficial to children as they seem. A new study analyzed some of the most downloaded educational apps for kids using a set of four criteria designed to evaluate whether an app provides a high-quality educational experience for children. The researchers found that most of the apps scored low, with free apps scoring even lower than their paid counterparts on some criteria. Jennifer Zosh, associate professor of human development ...

Recurrent, metastatic breast cancer resists treatment and is usually fatal. These tumors often have low numbers of immune cells in them, which renders immune therapies less effective for the disease. This preclinical study suggests that drugs called CDK4 and CDK6 inhibitors may make immune-cell therapies an effective option for treating recurrent ER-positive metastatic breast cancer. COLUMBUS, Ohio - A class of drugs that inhibits breast cancer progression when used with hormonal therapy might also boost the effectiveness of immune therapy in cases of recurrent, metastatic breast cancer, according to a new study led by researchers at The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital ...

A new survey led by researchers from North Carolina State University found that the future of hunting in the United States might look different than it has in the past. In The Journal of Wildlife Management, researchers reported findings from a nationwide survey of college students' interest and participation in hunting. They found current, active hunters were more likely to be white, male and from rural areas, and to have family members who hunted. But they also found a group of potential hunters - with no hunting experience but an interest in trying it - who were more diverse in terms of gender, ...

Despite our remarkable advances in medicine and healthcare, the cure to cancer continues to elude us. On the bright side, we have made considerable progress in detecting several cancers in earlier stages, allowing doctors to provide treatments that increase long-term survival. The credit for this is due to "integrated diagnosis," an approach to patient care that combines molecular information and medical imaging data to diagnose the cancer type and, eventually, predict treatment outcomes. There are, however, several intricacies involved. The correlation of molecular patterns, such as gene expression and mutation, with image features (e.g., how a tumor appears in a CT scan), is ...

HOUSTON - (May 10, 2021) - Implants that require a steady source of power but don't need wires are an idea whose time has come. Now, for therapies that require multiple, coordinated stimulation implants, their timing has come as well. Rice University engineers who developed implants for electrical stimulation in patients with spinal cord injuries have advanced their technique to power and program multisite biostimulators from a single transmitter. A peer-reviewed paper about the advance by electrical and computer engineer Kaiyuan Yang and his colleagues at Rice's Brown School of Engineering won the best paper award at the IEEE's Custom Integrated Circuits Conference, held virtually in the last ...

According to the International Whaling Commission, whale-watching tourism generates more than $2.5 billion a year. After the COVID-19 pandemic, this relatively safe outdoor activity is expected to rebound. Two new studies funded by a collaborative initiative between the Smithsonian Tropical Research Institute (STRI) in Panama and Arizona State University (ASU) show how science can contribute to whale watching practices that ensure the conservation and safety of whales and dolphins. "The Smithsonian's role is to provide scientific advice to policy makers as they pioneer management strategies to promote whale conservation," said STRI marine biologist, Hector Guzmán, whose previous work led the International Maritime Organization to establish shipping corridors ...

ATLANTA--Gestures--such as pointing or waving--go hand in hand with a child's first words, and twins lag behind single children in producing and using those gestures, two studies from Georgia State University psychology researchers show. Twins produce fewer gestures and gesture to fewer objects than other children, said principal researcher Seyda Ozcaliskan, an associate professor in the Department of Psychology. Language use also lags for twins, and language--but not gesture--is also affected by sex, with girls performing better than boys, Ozcaliskan said. "The implications are fascinating," said Ozcaliskan. ...

MISSOULA - University of Montana Professor Mark Hebblewhite has joined an international team of 92 scientists and conservationists to create the first-ever global atlas of ungulate (hoofed mammal) migrations. Working in partnership with the Convention on the Conservation of Migratory Species of Wild Animals, a U.N. treaty, the Global Initiative on Ungulate Migration (GIUM) launches May 7 with the publication of a commentary in Science titled " END ...

Visual brain areas involved in processing hands also encode information about the correct way to hold tools, according to new research published in JNeurosci. Each part of the brain's visual system activates in response to a certain type of item -- whether it's faces, tools, objects, or hands. Scientists assumed the brain segregates visual information in this way to optimize motor actions with tools. Yet most studies investigating the brain mechanisms for tool grasping used images of tools or hands, and no actual hand movements were performed. Knights et al. used fMRI to measure the brain activity of participants as they grasped 3D-printed kitchen tools (spoon, knife, and pizza cutter) and similar-sized non-tools. ...

Researchers at the University of East Anglia have made an astonishing discovery about how our brains control our hands. They used MRI data to study which parts of the brain are used when we handle tools, such as a knives. They read out the signal from certain brain regions and tried to distinguish when participants handled tools appropriately for use. Humans have used tools for millions of years, but this research is the first to show that actions such grasping a knife by its handle for cutting are represented by brain areas that also represent images of human hands, our primary 'tool' for interacting with the world. The research ...

Imaging technology has come a long way since the beginning of photography in the mid-19th century. Now, many state-of-the-art cameras for demanding applications rely on mechanisms that are considerably different from those in consumer-oriented devices. One of these cameras employs what is known as "single-photon imaging," which can produce vastly superior results in dark conditions and fast dynamic scenes. But how does single-photon imaging differ from conventional imaging? When taking a picture with a regular CMOS camera, like the ones on smartphones, ...

Peptides " short strings of amino acids" play a vital role in health and industry with a huge range of medical uses including in antibiotics, anti-inflammatory and anti-cancer drugs. They are also used in the cosmetics industry and for enhancing athletic performance. Altering the structure of natural peptides to produce improved compounds is therefore of great interest to scientists and industry. But how the machineries that produce these peptides work still isn't clearly understood. Associate Professor Max Cryle from Monash University's Biomedicine Discovery Institute (BDI) has revealed a key aspect of peptide machinery in a paper published in Nature Communications today that provides a key to the "Holy Grail" of re-engineering peptides.. The findings will advance his lab's work into ...

A new study from the Harvard GenderSci Lab in the journal Human Fertility, "The Future of Sperm: A Biovariability Framework for Understanding Global Sperm Count Trends" questions the panic over apparent trends of declining human sperm count. Recent studies have claimed that sperm counts among men globally, and especially from "Western" countries, are in decline, leading to apocalyptic claims about the possible extinction of the human species. But the Harvard paper, by Marion Boulicault, Sarah S. Richardson, and colleagues, reanalyzes claims of precipitous human sperm declines, re-evaluating evidence presented in the widely-cited 2017 meta-analysis by Hagai Levine, Shanna ...

Berkeley -- Forests' ability to survive and adapt to the disruptions wrought by climate change may depend, in part, on the eddies and swirls of global wind currents, suggests a new study by researchers at the University of California, Berkeley. Unlike animals, the trees that make up our planet's forests can't uproot and find new terrain if conditions get tough. Instead, many trees produce seeds and pollen that are designed to be carried away by the wind, an adaptation that helps them colonize new territories and maximize how far they can spread their genes. The ...

New research demonstrates that African and Asian leopards are more genetically differentiated from one another than polar bears and brown bears. Indeed, leopards are so different that they ought to be treated as two separate species, according to a team of researchers, among them, scientists from the University of Copenhagen. This new knowledge has important implications for better conserving this big and beautiful, yet widely endangered cat. No one has any doubts about polar bears and brown bears being distinct species. Leopards, on the other hand, are considered one and the same, a single species, whether of African or Asian ...

AURORA, Colo. (May 10, 2021) - Looking to safely block a gene linked to factors known to cause heart disease, scientists at the University of Colorado Anschutz Medical Campus may have found a new tool - light. The study, published Monday in the journal Trends in Molecular Medicine, may solve a medical dilemma that has baffled scientists for years. The gene, ANGPTL4, regulates fatty lipids in plasma. Scientists have found that people with lower levels of it also have reduced triglycerides and lipids, meaning less risk for cardiovascular disease. But blocking the gene using antibodies triggered dangerous inflammation in mice. Complicating things further, the gene can also be beneficial in reducing the risk of myocardial ...

Hamilton, ON (May 10, 2021) - It is well known that each person's gut bacteria is vital for digestion and overall health, but when does that gut microbiome start? New research led by scientists from McMaster University and Charité - Universitätsmedizin Berlin in Germany has found it happens during and after birth, and not before. McMaster researchers Deborah Sloboda and Katherine Kennedy examined prenatal stool (meconium) samples collected from 20 babies during breech Cesarean delivery. "The key takeaway from our study is we are not colonized before birth. Rather, our relationship with our gut bacteria emerges ...

URBANA, Ill. - Sweet corn growers and processors could be bringing in more profits by exploiting natural density tolerance traits in certain hybrids. That's according to 2019 research from USDA Agricultural Research Service (ARS) and University of Illinois scientists. But since root systems get smaller as plant density goes up, some in the industry are concerned about the risk of root lodging with greater sweet corn density. New research says those concerns are unjustified. "Root lodging can certainly be a problem for sweet corn, but not because of plant density. What really matters is the specific hybrid and the environment, those major rainfall and wind events that set up conditions for root structural failure," says ...

WHAT: A commentary from leaders at the National Institute on Drug Abuse, part of the NIH, discusses a new study showing that an extended-release injection of buprenorphine, a medication used to treat opioid use disorder, was preferred by patients compared to immediate-release buprenorphine, which must be taken orally every day. Extended-release formulations of medications used to treat opioid use disorder may be a valuable tool to address the current opioid addiction crisis and reduce its associated mortality. The study and the accompanying commentary were published May 10, 2021 in JAMA Network Open. It is well established that medications used to treat ...

Scientists at UC San Francisco are learning how immune cells naturally clear the body of defunct - or senescent - cells that contribute to aging and many chronic diseases. Understanding this process may open new ways of treating age-related chronic diseases with immunotherapy. In a healthy state, these immune cells - known as invariant Natural Killer T (iNKT) cells - function as a surveillance system, eliminating cells the body senses as foreign, including senescent cells, which have irreparable DNA damage. But the iNKT cells become less active with age and other factors like obesity that contribute to chronic disease. Finding ways to stimulate this natural surveillance system offers an alternative to senolytic ...