Culture

Electronic surveillance in couple relationships

image: Explores the psychological and social issues surrounding the Internet and interactive technologies.

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Mary Ann Liebert, Inc., publishers

New Rochelle, NY, July 13, 2020--Impaired intimacy, satisfaction, and infidelity in a romantic relationship can fuel Interpersonal Electronic Surveillance (IES). IES may become the preferred method for resolving relationship issues, rather than direct communication, further reducing trust and intimacy, according to the peer-reviewed journal Cyberpsychology, Behavior, and Social Networking. Click here to read the article now.

Online surveillance in relationships is a common phenomenon. Lead author Katherine Hertlein, PhD, University of Nevada, Las Vegas, identified the individual, relationship, and technological factors for predicting IES in romantic relationships.

"Partners may justify IES to answer questions about the relationship, enact fewer strategies to be vulnerable with one another, and increase the normalization of strategies that avoid honest, authentic conversation in interpersonal relationships," she says.

"As social networking sites have evolved, so has the ease of surveillance. Once partners reach an impasse in communication, therapists can play an important role in guiding the process of open communication and expression of emotions, allowing for empathy and healing to occur," says Editor-in-Chief Brenda K. Wiederhold, PhD, MBA, BCB, BCN, Interactive Media Institute, San Diego, California and Virtual Reality Medical Institute, Brussels, Belgium.

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Mary Ann Liebert, Inc./Genetic Engineering News

For every COVID-19 death, 9 close family members are left to grieve

A new analysis finds more than one million Americans have been swept up in the tidal wave of grief resulting from the COVID-19 pandemic.

Using new indicator they call the 'bereavement multiplier,' researchers found that on average each COVID-19 death corresponds with approximately 9 individuals who have lost a grandparent, parent, sibling, spouse or child. With an estimated 137,871 lives lost, that corresponds with nearly 1.22 million having lost a close relation.

The analysis was published in PNAS.

"Already, more than a million Americans will forever have a hole in their family," said study author Emily Smith-Greenaway, associate professor of sociology and spatial sciences at the USC Dornsife College of Letters, Arts and Sciences. "In just a few short months, over one million Americans have experienced an irreplaceable loss that not only leaves them grieving and possibly traumatized, but may come with long-lasting health and economic consequences for themselves and others in their family."

By turning attention to the COVID-19 bereavement burden, the study authors say they want to remind Americans that even as the pandemic abates, it will leave many grieving in its wake. Because many individuals who have died were simultaneously a spouse, parent, grandparent, sibling, and child, the collective toll of the crisis is far greater when considering all of the individuals bereaved by each death.

Researchers say their COVID-19 bereavement multiplier has also provided a clearer picture of how the crisis is affecting different racial and ethnic groups as well as different age groups.

Although there is a steep age gradient in hospitalizations and deaths from COVID-19, study authors say their work demonstrates that young people are not unscathed. Instead, they are suffering from the sudden death of their parents and grandparents.

In addition, race-specific COVID-19 mortality data demonstrates how Black Americans are disproportionately affected by COVID-19 bereavement, which study authors say will exacerbate racial inequalities in the U.S.

"There are substantial concerns about the health impacts of COVID-19 for individuals, but one area that has received less attention is how the deaths caused by this disease will reverberate through families," said study author Ashton Verdery, associate professor of sociology, demography, and social data analytics at Penn State University. "Our results show that these impacts will be substantial, they'll affect people at all ages, and they may exacerbate existing inequalities in bereavement and social support."

Some people experience serious and prolonged mental health consequences from bereavement and grief in the wake of a family member's death, including major depression and anxiety. Bereavement is also tied to physical health risks including worse cardiovascular health and mortality. The risk of experiencing these negative outcomes is more likely in the case of a family member's sudden, unexpected death, which will be the case for many during the COVID-19 pandemic.

"In the news cycle, the emphasis is on tracking the total number of lives lost, but what's missing is how these premature deaths reflect in family systems," said Smith-Greenaway. "What about the numerous loved ones left behind?"

Just weeks into the pandemic, Verdery and Smith-Greenaway combined data on predicted deaths with demographic information about family structures -- called kinship models -- to estimate the number of Americans who could lose a parent or grandparent to COVID-19. Initially, their work relied on specific prediction models and offered a sense of the overall bereavement burden based on different scenarios.

Now using the multiplier approach, the study authors say it's possible to continuously calculate the number of Americans bereaved by the death of a close relation in lockstep fashion with the rising death toll. Given that each death corresponds with approximately 9 bereaved by a close relation, they can track the bereavement burden in real time over the course of the epidemic.

Credit: 
University of Southern California

COVID-19: Considering meditation and yoga as adjunctive treatment

image: Dedicated to research on paradigm, practice, and policy advancing integrative health

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Mary Ann Liebert, Inc., publishers

New Rochelle, NY, July 13, 2020--The anti-inflammatory and other beneficial effects of meditation and yoga practices make them potential adjunctive treatments of COVID-19, according to the peer-reviewed journal JACM, The Journal of Alternative and Complementary Medicine. Click here to read the article.

Deepak Chopra, University of California, San Diego and William Bushell of Massachusetts Institute of Technology and co-authors from Harvard University and Harvard T.H. Chan School of Public Health describe the anti-inflammatory effects associated with meditation and yoga.

The "brief overview of key subjects" found "there is evidence of stress and inflammation modulation, and also preliminary evidence for possible forms of immune system enhancement, accompanying the practice of certain forms of meditation, yoga, and pranayama, along with potential implications for counteracting some forms of infectious challenges." The authors also "readily acknowledge that in the context of the SARS-CoV-2 pandemic, the ideas put forth in this article must be put to further rigorous scientific investigation."

JACM Editor-in-Chief John Weeks, johnweeks-integrator.com, Seattle, WA, states: "The paper is another in a series in JACM and in other integrative medicine journals suggesting that research agencies in the United States and Europe would serve their citizens by upping their exploration of the potential contributions of natural health practices, especially amidst the present dearth of conventional treatments."

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Mary Ann Liebert, Inc./Genetic Engineering News

Perceiving the flavor of fat: A Monell Center twins study

image: Potato chips used in the study, pre-portioned and labelled for participants

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Monell Chemical Senses Center

Most people would agree that the pleasure of some foods stems in part from its fat content. New research, led by the Monell Chemical Senses Center, has now found that liking of fatty food is more complex than its fat content alone - it could also be related to inborn genetic traits of the consumer related to fat perception. The team published their findings in Chemical Senses.

"Person-to-person diversity in the positive perception of fattiness derives partially from an individual's genetic make-up," said senior author Danielle Reed, PhD, Monell Associate Director. "How the taste, smell, and flavor of food and drink affect liking, and therefore the amount and type of food consumed, ultimately affects human health."

The team tested adult identical and fraternal twins in 2018 who attended the annual Twins Days Festival in Twinsburg, OH. "We asked the participants to rate low- and high-fat potato chips and report on how fatty they tasted and how much they liked them," said Reed. Participants also spit into a tube so their DNA could be extracted. Their genotype was determined at hundreds of thousands of locations in their genome.

Many previous studies using model solutions for greater experimental control have tried to link perception to liking but often failed to translate their data to real foods, noted co-author John Hayes, PhD, a Professor of Food Science at the Pennsylvania State University. This study added a real food - potato chips - to the experiment's design to overcome this limitation.

Genetically identical twins were more similar in their pattern of liking for the high- and low-fat potato chips compared with the fraternal twins. By comparing the taste-test results from other pairs of twins with similar genotype, the team identified two specific gene variants that correlated with the twins' ratings of liking. Neither of these genes has been previously tied to the perception of fattiness.

Although fat is nearly universally liked in foods, some people may be born with the genetic tendency to prefer foods higher or lower in fat. The team's next steps, including understanding how universal these genetic influences might be, will be to test people worldwide and with different types of fat in many different foods, such as pizza, muffins, and ice-cream.

Flavor is only one of many factors that drive everyday food choices, including cost, availability, and health. "Most people assume more liking drives more intake, but decades of research tell us the reverse is true - we avoid what we don't like," said Hayes. "I may love bacon, but if I listen to my cardiologist, I'm still not going to eat it every morning."

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Monell Chemical Senses Center

Study finds cancer mortality rate disparity based on hospital ratings

A new paper in the JNCI Cancer Spectrum, published by Oxford University Press, finds that the mortality rates for complex cancer procedures differ greatly between one-star hospitals (10.4%) and five-star hospitals (6.4%).

The safety of complex cancer surgeries varies widely across hospitals in the United States, with as much as a four-fold difference in hospital mortality rates, volume of patients, hospital experience, and surgeon training. Researchers have previously suggested that a large-scale shift of patients away from high-risk hospitals could meaningfully reduce mortality rates for complex cancer surgeries. Yet there are numerous challenges to matching patients with hospitals that are best suited to perform a specific procedure. In particular, hospital volumes and surgery-specific performance data are not readily available to patients and providers.

Researchers examined the Center for Medicare and Medicaid Services' "Star Rating" system, which serves as a guide for patients to compare the quality of each hospital's care (one-star = lowest to five-star= highest). This system is based on 62 measurements (e.g. mortality, readmissions, patient experience), but is not specific to any medical operation or patient population. Despite this fact, researchers found that the ratings correlate with quality and safety across many patient care scenarios, including the risk of mortality after complex cancer surgery.

A total of 105,823 patients underwent complex cancer procedures at 3,146 hospitals between 2013 and 2016. Eligible patients were over 65 years old with a diagnosis of cancer of the lung, colon, stomach, esophagus, or pancreas. This group captures an estimated 80% of all high-risk cancer surgeries.

The mortality rating over a 90-day period correlated with the star system, with the greatest difference observed between the 1-star (10.4%) and 5-star (6.4%) hospitals. However, these rates varied by surgery type.

These findings are consistent with prior studies that have found that the Center for Medicare and Medicaid Services' star rating system correlates with surgical mortality. And yet, the overall effectiveness of this system in choosing hospitals for complex cancer surgeries appears to be modest (84 lives per year), relative to other proposed strategies.

"For complex cancer care, choosing the right hospital may be as important as choosing the right treatment.," said Daniel Boffa. "In order for patients to select the best hospital for their situation, they need access to understandable information regarding the safety and quality of hospital care. Unfortunately, the CMS star-rating system, while clear and easy to access, does not appear to distinguish the safest from the least safe hospitals with enough separation to reliably guide cancer patient choice for complex surgical care."

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Oxford University Press USA

Cardiac scar tissue: A factor which regulates its size

image: Contraction force measurement for cardiac tissue. Formation of tissue between microposts (top image). Simulation of micropost displacement due to tissue contraction (bottom image).

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Khademhosseini lab

(LOS ANGELES) - When a person has a heart attack, the person's coronary artery is blocked, cutting off the flow of blood and oxygen to that portion of the person's heart. The surrounding heart muscle may be damaged to an extent depending on the size of the blocked area and the time between the attack and treatment. Upon recovery, the heart muscle starts to heal, and like a skin wound, it may form a scar. The size and location of the scar can vary greatly, and there is a possibility to develop additional complications or even death.

Although there are potential problems associated with cardiac scarring, little is known about the factors involved in regulating cardiac scar size after a heart attack. An understanding and demonstration of the role such factors play in the scarring process may result in new medical treatments.

As recently published in the journal Cell, a collaborative group including Ali Khademhosseini, Ph.D. and Samad Ahadian, Ph.D., of the Terasaki Institute for Biomedical Innovation (TIBI), has identified such a factor: collagen V. Collagen is the most abundant protein in the human body and is found in bones, tendons, muscles, skin and various internal organs. It provides structure and strength and holds the body together. It is also a component of scar tissue, which can be formed in various places throughout the body.

Within a healthy heart, there are different types of collagen, but collagen V is found in only small quantities. However, the group observed that large quantities of collagen V were found in cardiac injury scars. Previous independent studies of animals, genetically deficient for the production of collagen V, had shown increased cardiac scar tissue. These observations suggested that collagen V might somehow be involved in scar formation.

The group prepared mice that were completely deficient in producing collagen V and performed several experiments on them to test the effects of collagen V. Their findings indicate that upon cardiac injury equivalent to a heart attack, the genetic activity of the collagen V-deficient mice favored the formation of larger and more irregularly-constructed cardiac scars than that of normal control mice. In addition, fibroblasts, specialized cells that produce collagen and are part of the matrix that makes up scar tissue, exhibited different behavioral and mechanical properties in the collagen V-deficient mice compared to normal mice. During the normal healing process following cardiac injury, cardiac fibroblasts exert forces upon cardiac scars and cause them to shrink.

The team hypothesized that since the cardiac scar tissue without collagen V is larger, more stiff, and irregularly structured, the forces exerted by its fibroblasts would also be less. In order to test the hypothesis, the team made two separate scaffold preparations, consisting of a collagen hydrogel mixed with cardiac injury fibroblasts from either a normal or collagen V-deficient mouse. The scaffolds were then attached to two silicon-based posts and observed for the displacement of the posts due to fibroblast contraction. It was found that there was significantly less displacement of the posts with the collagen V-deficient fibroblasts than the normal fibroblasts, thus confirming their hypothesis and providing evidence for larger scar formation without collagen V. "By being able to fabricate and characterize microtissues, we could measure mechanical forces of heart tissues in a dish. Similar approaches can be used for human studies in a personalized manner," said Samad Ahadian, Ph.D., lead investigator of the Terasaki Institute team. As collagen V expression can vary among individuals, the elucidation of the feedback mechanisms and interactions of collagen V in scar formation may have profound implications for cardiac patients who suffer from the various heart ailments associated with cardiac injury scars.

Such knowledge may also have an even broader influence beyond mitigating cardiac ailments. Individuals with Ehlers Danlos Syndrome have genetic mutations that leave them deficient in collagen V production, and they exhibit abnormalities in the connective tissues of their joints, skin, and other tissues. They also exhibit abnormal wound healing with increased scar sizes. Experiments have shown that fibroblasts from individuals with this syndrome have increased expression of a protein called integrin, due to their lack of collagen V production; these individuals could possibly benefit from therapies involving inhibitors of integrin signaling.

"Understanding biological mechanisms that control tissue behavior is crucial for developing personalized therapeutics.?The work here demonstrates the importance of matrix molecules in cardiac tissue regeneration and scar formation," said Khademhosseini, Director and CEO of Terasaki Institute. "Therefore, this work is of considerable significance in developing approaches that induce tissue healing. As such, this work synergizes with a number of Platforms at the Terasaki Institute, which aim to leverage our ability to find personalized solutions for patients."

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Terasaki Institute for Biomedical Innovation

UTMB researchers have discovered a new antiviral mechanism for dengue therapeutics

image: Digital illustration of dengue virus

Image: 
The University of Texas Medical Branch

GALVESTON, Texas - A multidisciplinary team from The University of Texas Medical Branch at Galveston has uncovered a new mechanism for designing antiviral drugs for dengue virus. The study is currently available in Proceedings of the National Academy of Sciences.

Dengue virus is a very important mosquito-transmitted viral pathogen, causing 390 million human infections each year. Dengue is common in more than 100 countries and forty percent of the world's population is at risk of infection. When someone becomes ill with dengue, symptoms that can range from mild to severe may include fever, nausea/vomiting, rash and muscle/bone/joint aches. Despite this, there are no clinically approved drugs currently available to people who become infected.

In this study, the UTMB team has solved the co-crystal structure of the dengue capsid protein, which forms the interior of virus, in complex with an inhibitor. The co-crystal structure has provided atomic details of how the inhibitor binds the capsid protein and blocks its normal function, leading to the inhibition of viral infection. The structural information has opened new avenues to rationally design inhibitors for antiviral development.

"There are four types of dengue virus, all of which can cause epidemics and disease in humans. The current inhibitor does not inhibit all types of dengue virus. Our co-crystal structure explains why this is the case," said Pei-Yong Shi, I.H. Kempner professor of Human Genetics at UTMB. "Using this new information, we will be able to design new drugs that can inhibit all types of dengue virus. In addition, the structural information will also enable us to make compounds with improved potency and drug-like properties."

"The inhibitor binds four capsid molecules to form a tetramer. Such capsid tetramers are assembled into dengue virus," said Mark White, Associate Professor at UTMB who co-senior authored the study. "However, such a tetramer-containing virus is not able to productively infect new cells. Our study also explains how resistance emerges when dengue virus is treated with the inhibitor. A resistant virus emerges through one amino acid change that weakens the compound binding to the viral capsid protein."

"The World Health Organization lists dengue virus as one of the top ten public health threats and as such requires the urgent development of effective vaccine and therapeutics," said Hongjie Xia, UTMB postdoctoral fellow and lead author of the study. "Although we are currently coping with COVID-19 pandemic, Singapore and other regions are experiencing a record number of dengue human cases. This motivates our team to develop clinical treatments for this devasting disease."

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University of Texas Medical Branch at Galveston

A dual antenatal therapy benefits extreme preterm babies better than either alone or none

image: Sam Gentle from University of Alabama at Birmingham

Image: 
UAB

Extremely preterm children have very low birth weights, underdeveloped organs, and risks of long-term problems or disabilities.

Antenatal treatment -- therapy given before birth -- can improve outcomes in preterm children.

Statistical analysis of medical records can tell clinicians which antenatal treatments can best protect against severe neurodevelopmental impairment or death.

Read this story at http://www.uab.edu/news

The UAB News Studio is available for live or taped interviews with UAB experts.

BIRMINGHAM, Ala. - Tiny infants known as extremely preterm children have very low birth weights, underdeveloped organs, and risks of long-term problems or disabilities. Antenatal treatment of the mother and fetus -- therapy given before birth -- offers an opportunity to improve outcomes in preterm children.

Antenatal magnesium sulfate or antenatal corticosteroids have known benefits to reduce problems like cerebral palsy, death, respiratory distress syndrome or necrotizing enterocolitis, and both treatments are recommended for infants born between 24 and 33 weeks of gestation. The effect of both of them combined in extremely premature children, versus either alone or none, has not been studied, though both are often given in routine care.

Now researchers, led by Samuel Gentle, M.D., assistant professor of pediatrics in the University of Alabama at Birmingham School of Medicine, report that antenatal treatment with both magnesium sulfate and corticosteroids together yields an increased benefit for children born at 22 to 26 weeks of gestation, compared to no antenatal treatment or with either therapy alone. This multi-center, prospective observational study included six universities, a nonprofit research institute and the National Institutes of Health Neonatal Research Network. Researchers did a statistical analysis of medical records for 3,093 children born 2011 through 2014, which included comprehensive neurodevelopmental follow-ups at 18 to 26 months of corrected age. The children had an average birth weight of 1 pound, 9 ounces.

Children exposed to both antenatal corticosteroids and magnesium sulfate had a 36.3 percent rate of severe neurodevelopmental impairment or death, compared to 44.3 percent for those exposed to antenatal corticosteroids alone, 53 percent for those exposed to magnesium sulfate alone and 48.2 percent for those who had neither therapy.

Similarly, children exposed to both antenatal corticosteroids and magnesium sulfate had a lower rate of death compared with either or neither therapy. However, the rate of severe neurodevelopmental impairment among survivors did not differ among exposure groups.

The research is published in the journal Obstetrics & Gynecology, and Gentle discusses the importance of these findings for clinical practice in a recent "Editors Picks" podcast: "You might say, 'Why do we need to look at this if there is data to support the practice for both?' In this cohort, around 75 percent of infants were exposed to magnesium sulfate, whereas nearly 90 percent were exposed to antenatal corticosteroids. If there's time to get one therapy, it seems as though there would be time to be exposed to both."

"This national research is a very important study of two of the most effective maternal medications in periviability," said one of the co-authors, Waldemar Carlo, M.D., the Edwin M. Dixon Professor of Pediatrics and director of the UAB Division of Neonatology and Newborn Nurseries.

Credit: 
University of Alabama at Birmingham

Domestic violence increased in the great recession

image: A figure from the study shows incidents of domestic violence that required either an emergency room visit or hospitalization by rates per 100,000 of population. The numbers show a marked increase during the Great Recession, especially among Blacks and Native Americans.

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Courtesy of Study Researchers

Emergency room visits for domestic violence incidents in California more than tripled during the Great Recession compared to the years before, signaling a need to prepare for similar and more prolonged effects during the COVID-19 financial crisis, suggest University of California, Davis, researchers.

Conducting one of the first studies to date examining the impact of a modern recession on hospital and emergency room visits, researchers found that physical abuse in adults increased substantially between the time periods, with Black and Native American people being disproportionately affected. Violence against children did not show a marked increase. The results were published in Preventive Medicine in June.

"The results from our study shine a spotlight on the importance of domestic-violence-related screening, prevention and response during the next several months of the COVID-19 financial effects," said the study's primary author, Alvaro Medel-Herrero, project scientist for the UC Davis Center for Health and the Environment. "Notably, domestic violence is grossly under-reported, and cases that end up in the emergency room or result in a hospital stay are only the most egregious examples. This tells us there may be an even larger problem than the numbers can show."

The study's co-authors included Suzette Smiley-Jewel, of the UC Davis School of Veterinary Medicine; Martha Shumway, Department of Psychiatry, University of California, San Francisco; Amy Bonomi, Michigan State University; and Dennis Reidy, School of Public Health, Georgia State University.

Study looked at 53,000 domestic violence episodes

The study's authors looked at more than 53,000 domestic-violence-related episodes, composed of both intimate partner violence as well as violence against elders and children, between 2000 and 2015. The numbers were drawn from California's Office of Statewide Health Planning and Development, or OSHPD, and then broken down between the years during, before and after the Great Recession. While the Great Recession officially lasted less than two years, from December 2007 to June 2009, during which the gross domestic product contracted, the economic crisis produced long-lasting consequences for individuals as well as society as a whole, researchers said.

"Proactive outreach is especially needed for minoritized people, who may be especially isolated, experiencing disconnections from services, and facing extreme financial stress," said one of the co-authors, Bonomi, of Michigan State University.

Blacks more than three times more likely to be victims

Time series for the study were divided into pre-recession (January 2000-November 2007) and recession/post-recession (December 2007-September 2015) periods. Blacks were more than three times more likely to suffer domestic violence during the recessionary period when compared with other segments of the California population, according to the data. Statistics showed that there were 3.58 emergency room visits per 100,000 population compared to 10.42 emergency visits per 100,000 people for Blacks. Hospitalization rates remained relatively similar from the pre-recession as compared to the recession/post-recession period except for Native Americans, which nearly doubled.

Emergency visits vastly exceeded hospitalizations during the 2007-2015 time period.

Additionally, the number of California police calls for weapon-involved domestic violence episodes steadily increased from 2008 (65,219) to 2014 (75,102).

Costs associated with domestic violence

For the period analyzed (2000-2015), the estimated total charge for all analyzed domestic violence hospitalizations was more than $1 billion (data was not available for emergency department costs).

Length of hospital stays slightly increased during the recession/post-recession period as compared to the pre-recession period, yet the inflation-adjusted charge per hospitalization dramatically increased over time, according to the study.

Domestic violence rate does not correspond with other hospital visits

It is important to note that the described increase in domestic-violence-related hospitalizations during the recession does not correspond to a general trend in health care in California. For example, California cancer hospital rates dropped during the Great Recession, according to OSHPD data. However, an increasing demand for emergency care during the recession and post-recession period has been reported and may reflect limitations in accessing care in other parts of the health care system, researchers said.

The authors' research will continue.

Credit: 
University of California - Davis

Study links stress hormone with higher blood sugar in Type 2 diabetes

video: A new study by researchers at The Ohio State University Wexner Medical Center and The Ohio State University College of Medicine documents a clear link between the stress hormone cortisol and higher blood sugar levels in people with type 2 diabetes.

Image: 
The Ohio State University Wexner Medical Center

COLUMBUS, Ohio - A new study by researchers at The Ohio State University Wexner Medical Center and The Ohio State University College of Medicine documents a clear link between the stress hormone cortisol and higher blood sugar levels in people with type 2 diabetes.

The study published online in the journal Psychoneuroendocrinology.

"In healthy people, cortisol fluctuates naturally throughout the day, spiking in the morning and falling at night," said Dr. Joshua J. Joseph, an endocrinologist and researcher at The Ohio State Wexner Medical Center's Diabetes and Metabolism Research Center who led the study. "But in participants with type 2 diabetes, cortisol profiles that were flatter throughout the day, had higher glucose levels."

Previous research has shown that stress and depression are two of the major causes of a flatter cortisol profile. These sustained levels of cortisol make it much more difficult to control blood sugar and manage the disease, which is why it is so important for those with type 2 diabetes to find ways to reduce stress.

"We have begun a new trial to examine if mindfulness practices can lower blood sugar in those with type 2 diabetes," said Joseph, an assistant professor in the College of Medicine. "But this isn't the only effective form of stress relief. It's important to find something you enjoy and make it a part of your everyday routine."

The relationship of cortisol with glucose levels was only observed in those with diabetes. However, Dr. Joseph and his team believe the stress hormone likely plays an important role in diabetes prevention and they continue to research the connection between cortisol and the development of diabetes and cardiovascular disease.

More than 30 million Americans have Type 2 diabetes, according to the Centers for Disease Control and Prevention. With Type 2 diabetes, your body doesn't use insulin properly. Some people can manage their blood sugar levels with healthy eating and exercise, while others may need medication or insulin to help manage it.

"Most people with Type 2 diabetes know the importance of exercising regularly, eating a healthy diet, and getting plenty of rest. But stress relief is a crucial and often forgotten component of diabetes management," Joseph said. "Whether it's a yoga class, taking a walk or reading a book, finding ways to lower your stress levels is important to everyone's overall health, especially for those with type 2 diabetes."

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MediaSource

Janggu makes deep learning a breeze

image: The scientists Altuna Akalin (left) and Wolfgang Kopp (right) from the "Bioinformatics and Omics Data Science" group.

Image: 
Felix Petermann, MDC

Researchers from the MDC have developed a new tool that makes it easier to maximize the power of deep learning for studying genomics. They describe the new approach, Janggu, in the journal Nature Communications.

Imagine that before you could make dinner, you first had to rebuild the kitchen, specifically designed for each recipe. You'd spend way more time on preparation, than actually cooking. For computational biologists, it's been a similar time-consuming process for analyzing genomics data. Before they can even begin their analysis, they spend a lot of valuable time formatting and preparing huge data sets to feed into deep learning models.

To streamline this process, researchers from the Max Delbrueck Center for Molecular Medicine in the Helmholtz Association (MDC) developed a universal programming tool that converts a wide variety of genomics data into the required format for analysis by deep learning models. "Before, you ended up wasting a lot of time on the technical aspect, rather than focusing on the biological question you were trying to answer," says Dr. Wolfgang Kopp, a scientist in the Bioinformatics and Omics Data Science research group at MDC's Berlin Institute of Medical Systems Biology ?(BIMSB), and first author of the paper. "With Janggu, we are aiming to relieve some of that technical burden and make it accessible to as many people as possible."

Unique name, universal solution

Janggu is named after a traditional Korean drum shaped like an hourglass turned on its side. The two large sections of the hourglass represent the areas Janggu is focused: pre-processing of genomics data, results visualization and model evaluation. The narrow connector in the middle represents a placeholder for any type of deep learning model researchers wish to use.

Deep learning models involve algorithms sorting through massive amounts data and finding relevant features or patterns. While deep learning is a very powerful tool, its use in genomics has been limited. Most published models tend to only work with fixed types of data, able to answer only one specific question. Swapping out or adding new data often requires starting over from scratch and extensive programming efforts.

Janggu converts different genomics data types into a universal format that can be plugged into any machine learning or deep learning model that uses python, a widely-used programming language.

"What makes our approach special is that you can easily use any genomic data set for your deep learning problem, anything goes in any format," Dr. Altuna Akalin, who heads the Bioinformatics and Omics Data Science research group.

Separation is key

Akalin's research group has a dual mission: developing new machine learning tools, and using them to investigate questions in biology and medicine. During their own research efforts, they were continually frustrated by how much time was spent formatting data. They realized part of the problem was each deep learning model included its own data pre-processing. By separating the data extraction and formatting from the analysis, it provides a much easier way to interchange, combine or reuse sections of data. It's kind of like having all the kitchen tools and ingredients at your fingertips ready to try out a new recipe.

"The difficulty was finding the right balance between flexibility and usability," Kopp says. "If it is too flexible, people will be drowned in different options and it will be difficult to get started."

Kopp has prepared several tutorials to help others begin using Janggu, along with example datasets and case studies. The Nature Communications paper demonstrates Janggu's versatility in handling very large volumes of data, combining data streams, and answering different types of questions, such as predicting binding sites from DNA sequences and/or chromatin accessibility, as well as for classification and regression tasks.

Endless applications

While most of Janggu's benefit is on the front end, the researchers wanted to provide a complete solution for deep learning. Janggu also includes visualization of results after the deep learning analysis, and evaluates what the model has learned. Notably, the team incorporated "higher-order sequence encoding" into the package, which allows to capture correlations between neighboring nucleotides. This helped to increase accuracy of some analyses. By making deep learning easier and more user-friendly, Janggu helps throw open the door to answering all kinds of biological questions.

"One of the most interesting applications is predicting the effect of mutations on gene regulation," Akalin says. "This is exciting because now we can start understanding individual genomes, for instance, we can pinpoint genetic variants that cause regulatory changes, or we can interpret regulatory mutations occurring in tumors."

Credit: 
Max Delbrück Center for Molecular Medicine in the Helmholtz Association

Black women often ignored by social justice movements

Black women are often less likely to be associated with the concept of a "typical woman" and are viewed as more similar to Black men than to white women, which may lead to some anti-racist and feminist movements failing to advocate for the rights of Black women, according to new research published by the American Psychological Association.

"Black women are often overlooked in people's conversations about racism and sexism even though they face a unique combination of both of these forms of discrimination simultaneously," said lead researcher Stewart Coles, a PhD candidate at the University of Michigan's Department of Communication and Media. "This 'intersectional invisibility' means that movements that are supposed to help Black women may be contributing to their marginalization."

The research was published online in the APA journal Translational Issues in Psychological Science. The study was conducted online with more than 1,000 participants from the United States who were asked whether 41 positive or negative stereotypical attributes (such as hostile, sexually promiscuous or determined) were associated with different races or genders. Participants were told that their responses were not an admission that they believed these stereotypes so they would answer honestly.

Some participants were asked about stereotypical attributes just for men and women or for Black people or white people. Then other groups were asked about a combination of race and gender (Black women, Black men, white women and white men). The clustering of the responses showed how Black women were viewed in relation to the other groups. The typical woman was considered to be much more similar to a typical white woman than a typical Black woman. Black women and Black men also were considered to be more similar to each other than to white women or white men.

"The operative word in defining how similar to other groups Black women are is more 'Black' and less 'women,'" the journal article noted.

The underdifferentiation of Black women from Black men may help explain why Black women face similar rates of racial disparities in traffic stops and arrests, but anti-racist movements often focus on Black men in the fight against police brutality, said Josh Pasek, PhD, one of the researchers on the study and associate professor of communication studies and faculty associate in the Center for Political Studies at the University of Michigan.

"This is reflected both in terms of the victims of brutality who are highlighted and whose voices receive the most attention," said Pasek. "In this moment, we can see how much more attention has been paid to the murders of Ahmaud Arbery and George Floyd than the murder of Breonna Taylor."

Arbery, a 25-year-old Black man, was shot dead in February after being chased by three white men as he jogged through a neighborhood in Brunswick, Georgia. Taylor, a 26-year-old Black woman, was shot and killed by police in her Louisville, Kentucky, apartment in March. Floyd, a 46-year-old Black man, was killed during an arrest in Minneapolis in May. His death set off protests across the country.

Previous research has found that Blackness is associated with masculinity, leading to errors when categorizing Black women's gender or recognizing Black women's faces. Other studies have found that Black women and girls are more associated with threat and danger than are white women and girls.

Feminist movements that focus only on issues that predominantly affect white women without addressing racialized sexism ignore the needs of Black women, who face higher rates of police abuses, including sexual violence, Coles said. Previous research also has found that Black women experience much higher rates of domestic and sexual abuse from partners than white women, and Black women are less likely to report this violence than white women.

Feminist and anti-racist movements should include Black women in leadership roles and advocate for the rights of Black women, Coles said.

"The key often starts with listening to Black women about their concerns and what their needs are and then delivering accordingly," he said.

Three out of four study participants were white, while 8% were Black, 8% were Hispanic and 5% were Asian. The responses weren't analyzed based on the ethnicity or gender of the participants because the study wasn't examining whether the participants endorsed specific stereotypes themselves.

"Previous research suggests that members of marginalized groups are aware of stereotypes of their groups," Coles said. "Thus, they would likely report the same awareness of stereotypes as would members of other groups."

Credit: 
American Psychological Association

How to strengthen New Zealand's proposed cannabis legalization and control bill

Two drug policy experts have identified gaps and challenges in New Zealand's proposal for legalizing recreational cannabis. In advance of a widely-watched national referendum vote to be held this September, Associate Professor Chris Wilkins and Dr. Marta Rychert of Massey University argue in the pages of Addiction that New Zealand's Cannabis Legislation and Control Bill (CLCB) needs to be strengthened in two critical areas:

Set a formal minimum price for cannabis: The legalization of cannabis in other jurisdictions has resulted in significant declines in the legal price of cannabis. Minimum unit pricing has been shown to be effective at reducing alcohol consumption levels and related harms. The CLCB includes a discretionary power to raise the excise tax for cannabis for a maximum of 12 months if the price of cannabis drops below the level consistent with purposes of the Act. This discretionary power lacks clear criteria for activation and thus falls short of a clear minimum price provision.

Lower the potency cap for cannabis products: High potency cannabis is associated with increasing first-time cannabis treatment admissions, transition to daily use, cannabis dependence and higher risk of psychosis and psychosis relapse. The CLCB's maximum potency levels for cannabis plant (15% THC) appears to be at the higher end of those currently found in the black market in New Zealand. Potency levels for edibles and extracts are expressed as milligrams "per unit" and "per package" without defining what constitutes a unit or package. (Edibles and concentrates will not initially be sold but they are included in the CLCB for future approval.)

Wilkins and Rychert also identify two public health objectives of the CLCB that will be difficult to achieve:

Difficulties reducing cannabis use over time via a commercial market: The CLCB largely proposes a commercial cannabis market with provisions for non-commercial and not-for-profit supply. The CLCB objective of lowering cannabis use over time appears at odds with the proposed commercial cannabis sector, which will focus on expanding sales. Non-commercial or not-for-profit operators can provide legal access to cannabis while avoiding profit driven commercial companies.

Difficulties taxing products by THC potency: The CLCB proposes a progressive product excise tax based on THC potency and weight. Considerable work will be required to implement a potency-based tax, including consistent sampling procedures, certified testing facilities, and effective auditing to prevent producers gaming the system. Also, the reliability and replicability of testing THC is problematic. A weight-based tax (similar to the taxation of tobacco) may be a more practical alternative for now.

Dr Wilkins says: "The New Zealand referendum vote will be the first time a country will have the opportunity to vote on a comprehensive regulatory framework to legalise cannabis rather than a general question asking whether cannabis should be legal or not. It's therefore important that New Zealand voters clearly understand the strengths and weaknesses of the proposed CLCB."

Wilkins and Rychert provided feedback on the first draft of the CLCB to the New Zealand Ministry of Justice Cannabis Referendum Team, along with a number of other anonymous experts and public commentators. The authors received no financial or non-financial remuneration for these comments.

Credit: 
Society for the Study of Addiction

Researchers find the worst reason to give a gift

COLUMBUS, Ohio - Here's a good way to make sure a friend hates a gift from you: Say it will save him money.

In a series of studies, researchers found that people reacted negatively to gifts that they were told - or that they inferred - were given to help them save money.

Receiving this kind of present makes a person feel inferior to the gift-giver, the research found. People are more receptive to gifts that are intended to save them time.

"Most of us have this belief that any gift we give is going to be appreciated - but the way a gift is presented can influence how people feel about it," said Grant Donnelly, co-author of the study and assistant professor of marketing at The Ohio State University's Fisher College of Business.

The study was published recently in the Journal of the Association for Consumer Research.

While money-saving gifts often miss the mark, gifts intended to save people time are seen as a compliment, Donnelly said.

"When you don't have time, you're perceived as busy and in high demand. There's something high-status about that, compared to not having enough money, which is seen as low status," he said.

In one study, the researchers asked 405 people recruited online to recall recently receiving a gift that they thought was intended by the gift-giver to save them either time or money.

They were asked to write a few sentences about how they felt about the gift and then completed various measures assessing their impression of the gift and gift-giver.

Results showed that those who received the gift intended to save them money were more likely to say the gift made them feel embarrassed, ashamed and bad, compared to those who recalled the time-saving gift.

The reason? Those who received the money-saving gift reported that they believed the gift-giver perceived their own status as higher than the recipient's.

"They thought the gift-giver was implying they couldn't take care of themselves and were incompetent because they needed money," Donnelly said.

The results held true in a real-world situation, too. The researchers provided 200 college students with a $5 Starbucks gift card to give to a friend. Half of the gift cards included the message "I know you've been stressed for money lately. I hope you'll enjoy this gift card in hopes that it will save you some money."

The other half had a message that was identical except the message was that it would save them time, rather than money.

All gift cards had a survey for the gift recipients to return to the researchers.

Results were identical to the first study: Those who received gift cards intended to save them money had more negative emotions than those who received the cards intended to save them time. In addition, those who received the money-saving cards said they thought the gift-givers believed they were higher-status than themselves.

If there was any bright spot for the people who sent the money-saving gift card, it was that their friends were just as likely to redeem the card as those who received it as a time-saver, Donnelly said.

Another study showed that people who imagined getting a gift card intended to save them money were more likely to choose to buy a higher-status item with that card - presumably to boost their self-esteem that was damaged with the money-saving gift.

"In part because people feel they have lower status if they need money, they are more drawn to buy status-oriented products that can help them bolster this deficiency they perceive," Donnelly said.

But sending your friends gifts to save them money doesn't just make them feel bad about themselves. In one study, participants felt less appreciation for a money-saving gift than for a gift intending to save them time, or a gift with no communicated motive.

Donnelly said it is important for people to consider the message they send with their gifts.

"We can have this perspective gap where we don't really consider how our gifts are received. It can harm your relationship with the recipient if you're not careful," he said.

"It may be best to give a money-saving gift without acknowledging the reason, or to find a way to make it about saving time."

Credit: 
Ohio State University

Military personnel at risk of suicide store firearms unsafely

Military personnel who are at a greater risk of suicide are more likely to unsafely store firearms in unlocked cabinets where they can access them easily, according to a Rutgers researcher.

Firearms account for approximately half of all suicide deaths in the United States and approximately two-thirds of all suicide deaths in the military.

"Ready access to firearms is a robust risk factor for death by suicide, with data demonstrating that suicide is up to five times as likely in homes with a firearm present," said lead author Michael Anestis, executive director of the New Jersey Gun Violence Research Center, and an associate professor in the Department of Urban-Global Public Health at the Rutgers School of Public Health.

The study, published in the journal Psychiatry Research, stresses the importance of interventions to assure safe firearm storage as a suicide prevention strategy.

Researchers examined firearm ownership and storage and suicide risk factors such as depression and lifetime and current suicidal ideation in 953 service members, about 80 percent whom were in the National Guard.

They found that 18 percent of the service members who owned a personal firearm stored them unsafely -- loaded and in an accessible, non-secure location like a bedside table rather than a gun safe -- with 9 percent exhibiting current suicidal ideation. The study, however, found no association between lifetime suicidal ideation and a greater likelihood to own firearms.

"The fact that firearm-owning service members who are experiencing or have experienced severe distress appear to be more prone to unsafe storage practices is particularly dangerous since they are often hesitant to seek mental health care or to disclose or change their firearm storage practices," said lead author Michael Anestis.

Effective interventions include providing education on firearm suicide risk and safe storage strategies including storing the ammunition separately, removing firing pins and allowing someone else to keep a key or code to a gun locking devise and removing firearms from the home during times of suicidal crisis.

"We cannot simply wait to know a service member is at high risk for suicide before we encourage safe storage or temporary storage away from home," Anestis said. "We may not know they are at risk until it is too late, so we need to promote these practices to everyone. If it becomes more difficult for a suicidal person to access a firearm, it is far less likely they will die."

Credit: 
Rutgers University