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New Research from Yale University Uncovers Crucial Factor in 90% of Enigmatic Miscarriages

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A Yale University study reveals that placenta testing can identify the cause of 90% of previously unexplained miscarriages, providing a path to improved pregnancy care and emotional relief for affected families.

Researchers at Yale University have demonstrated that placenta testing can accurately pathologically determine more than 90% of previously unexplained miscarriages, a finding that researchers say could help inform future pregnancy care. say:

The results of this study were recently published in the journal Reproductive science.

Miscarriage statistics

Of the approximately 5 million pregnancies each year in the United States, 1 million end in miscarriage (miscarriage occurs before 20 weeks of pregnancy) and more than 20,000 end in stillbirth after 20 weeks of pregnancy. Up to 50% of these losses are classified as “unspecified.”

Emotional strain and research purpose

Patients who suffer from these pregnancy outcomes are often told that their loss is unexplained and that they can just try again, contributing to patients’ feelings of responsibility for the loss, said lead author and obstetrics department specialist. said researcher Dr. Harvey Kliman. Department of Gynecology and Reproductive Sciences, Yale School of Medicine.

“Pregnancy loss is a tragedy, and to be told there is no explanation causes great pain to the families of those who have lost,” said Kliman, who is also director of the Reproduction and Placenta Research Unit. “Our goal was to extend the current classification system to reduce the number of cases that remain unidentified.”

Methodology and findings

For this study, Professor Kliman collaborated with Beatrix Thompson, currently a medical student at Harvard University, and Parker Holzer, a former graduate student in the Yale School of Statistics and Data Science, to explore the pathology of loss. We developed an expanded classification system for pregnancy loss based on clinical tests. placenta.

The team started with a series of 1,527 single-child pregnancies that ended up being losses and were sent to Kliman’s Consulting Services at Yale University for evaluation. After excluding cases for which there was insufficient material for testing, 1,256 placentas from 922 patients were tested. Of these, 70% were miscarriages and 30% were stillbirths.

Domenic Rice is 33 weeks pregnant with her fifth child, holding a photo frame of herself with her stillborn son, TJ.Credit: Photo by Nancy Borowicz

By adding distinct categories of “placenta with abnormal growth” (atypical placenta) and “small placenta” (less than 10 placentas);th For example, the authors were able to establish a pathological diagnosis for 91.6% of pregnancies, including 88.5% of miscarriages and 98.7% of abortions, based on existing categories such as cord accident, avulsion, thrombosis, and infection. I did. stillbirth.

The most common pathological feature observed in unexplained miscarriages was placental dysmorphism (86.2%), a marker associated with genetic abnormalities. The most common pathological feature observed in unexplained stillbirths was a small placenta (33.9%).

Impact and future recommendations

“This study suggests that more than 7,000 small placentas may be detected per year associated with stillbirth.” in the womb “Before the loss, we had flagged these pregnancies as high risk,” Kliman said. “Similarly, identifying placental dysmorphisms could be one way to potentially identify genetic abnormalities in the approximately 1 million miscarriages that occur in our country each year.”

Additionally, “having a specific explanation for the loss of a pregnancy can help families understand that the loss is not their fault, begin the healing process, and, if possible, prevent similar losses in the future, especially It can prevent stillbirths from occurring.”

When asked what the most effective way to prevent stillbirth is, Kliman replied, “Measure the placenta!”

References: “Placental Pathology in Unexplained Pregnancy Loss” by Beatrix B. Thompson, Parker H. Holzer, and Harvey J. Kliman, September 19, 2023. reproductive science.
DOI: 10.1007/s43032-023-01344-3

Source: scitechdaily.com

Rare genetic mutations may enhance treatment efficacy for migraine headaches

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Migraines can cause debilitation

Nikki Lloyd/Getty Images

An analysis of the genomes of 1.3 million people has revealed dozens of variations associated with migraine, which could lead to more effective treatments for migraines.

Up to 20% of adults worldwide are thought to experience migraines. Migraines are recurring headaches that are often difficult to treat and can interfere with daily life. Some people have sensory symptoms, such as flashing lights or tingling in the body, before the headache begins, but others do not. It is not known why these two types of migraine, known as migraine with aura and migraine without aura, exist.

“While it is well known that migraines run in families, it has not been easy to identify a clear genetic basis for each subtype,” he says. Debbie Hay at the University of Otago in New Zealand.

now, Kari Stephenson Researchers from the Icelandic biopharmaceutical company deCODE Genetics have identified a genetic variation that appears to influence whether people develop migraines.

Researchers analyzed the DNA of 1.3 million people in Iceland, Denmark, the UK, the US and Norway, and found that around 80,000 of them had experienced migraines.

They discovered 44 genetic mutations associated with the condition, 12 of which had never been reported before. Among these, the research team PRRT2 Genes that help control signaling between neurons are correlated with a greater risk of migraine with aura and epilepsy.

the other A rare mutant that suppresses the function of a gene SCN11A and KCNK5which play a role in transporting sodium and potassium between cells, respectively, and appear to prevent both types of migraines.

The discovery could lead to new treatments that target the causes of migraines, such as drugs that can inhibit the production of a protein encoded by migraines. SCN11A and KCNK5 gene.

“Findings like this should bring great hope to people who suffer from migraine,” Stefansson said. “Current treatments cannot completely eliminate the tendency to develop migraines, so there is a lot of room for better treatments.”

“While great advances have been made in migraine treatment recently, there is still much work to be done in understanding the mechanisms of migraine and how to tailor treatment to each patient,” Hay says.

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Source: www.newscientist.com

Unprecedented Level of Internal Structure Exposed by Groundbreaking Human Brain ‘Atlas’

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Global collaboration has led to the creation of the world’s most comprehensive primate brain atlas, consisting of 4.2 million cells. This atlas has provided insights into region-specific functions, associations with neurological diseases, and has guided future brain research and disease intervention. The project aims to explore the evolution of the human brain and discover new targets for disease treatment. The initiative, known as the “Brain Initiative Cell Census Network” project by the National Institutes of Health, has been working towards mapping the cell groups and understanding their functions for over 21 years. The recent breakthrough discovery has allowed scientists to gain a deeper understanding of the brain and the medical mysteries behind disorders such as autism and depression. The research team, led by scientists from Arizona State University, the University of Pennsylvania, the University of Washington, and the Brotman Beatty Institute, created the largest atlas of the primate brain to date. The atlas consists of profiles of over 4 million cells, providing valuable information on the evolution of human cognition and behavior, as well as the occurrence of neurological diseases. The data collected has been made publicly available for the scientific community and the general public. The research team utilized state-of-the-art single-cell techniques and analyzed gene expression and DNA regulatory regions to identify molecularly distinct brain cell types and their functional characteristics. They also investigated the genetic architecture of neurological disease risk at the cellular level. The atlas serves as a crucial resource for further research on the human brain and potential interventions for neurological diseases.

Source: scitechdaily.com

Researchers discover the science behind our increased appetite for certain foods

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Researchers have made an interesting discovery about the impact of advanced glycation end products (AGEs) found in prepared foods on hunger and health. AGEs, which are produced during cooking processes like baking and frying, enhance the appeal of food but also have negative effects on our well-being. Studies using nematodes have shown that AGEs lead to increased consumption and reduced lifespan, emphasizing the importance of choosing healthier food options.

Scientists at Buck have identified a mechanism that may explain why consuming delicious yet unhealthy food increases our desire to eat more. Overeating and weight gain can result from various factors, including the ready availability of flavorful, high-calorie foods. The researchers at Buck have found that AGEs, a type of chemical found in processed and prepared foods, contribute to increased hunger and a decreased ability to make healthy food choices. This research sheds light on the reasons behind our testing abilities for these foods.

According to Pankaj Kapahi, the lead author of the research study, “This research involving tiny worms has significant implications for human dietary choices and our tendency to overeat certain foods.” He added, “Modern processed foods rich in AGEs are tempting to eat, but we know very little about their long-term effects on our health.” The study was recently published in the journal eLife.

An evolutionary perspective suggests that humans have evolved mechanisms that encourage us to consume as much food as possible when it is readily available. This is because excess calories are stored as fat, which can be utilized during periods of fasting. The preference for flavorful foods, particularly those high in sugar, has been favored by natural selection. However, the mechanisms that make it difficult to resist such foods have remained unclear. AGEs are metabolic byproducts that occur naturally during sugar metabolism in cells but are also formed during cooking processes and are found in many processed foods. AGEs provide the appealing brown color that occurs during cooking, making food more appetizing and harder to resist.

While the Maillard reaction, which occurs when sugars and proteins interact with heat, is well-known for making food taste good, it can have detrimental effects on the body. The resulting AGEs cause inflammation and oxidative damage, which contribute to various health issues such as blood vessel stiffness, high blood pressure, kidney disease, cancer, and neurological problems. Accumulation of these metabolic byproducts in different organs is likely one of the main factors in the aging process of organs and organisms overall. It is due to these harmful effects that researchers are studying the impact of AGEs on health.

Even tiny worms used in the Kapahi lab were not immune to the allure and harm of AGEs. Researchers observed that these chemicals not only caused diseases and reduced lifespan but also increased the worms’ appetite for the same substances. The researchers aimed to understand the underlying mechanism by which AGEs promote excessive eating. Through their study, they identified a signaling pathway mediated by specific AGE molecules that promotes feeding and neurodegeneration. They also found that worms lacking the ability to process even naturally occurring AGEs had significantly shorter lifespans. The study is now expanding to mice, where researchers will investigate the relationship between AGEs and fat metabolism.

Understanding this signaling pathway may provide insights into overeating caused by modern diets rich in AGEs. This research highlights the role of AGE accumulation in diseases such as obesity and neurodegeneration and its association with the global rise in age-related diseases.

The key takeaway from their work is a profound realization that our food intake is often controlled by the food itself. To address this, the researchers have personally changed their diets, practicing intermittent fasting to allow the body to utilize fat instead of sugar. They also recommend consuming whole grains to maintain stable glucose levels and utilizing moist heat instead of dry cooking methods, such as steaming or frying. Adding acids when cooking, like when grilling, slows down the formation of AGEs.

In conclusion, this study provides valuable insights into the impact of AGEs found in processed and prepared foods on hunger, overeating, and overall health. It highlights the need for individuals to be conscious of their dietary choices and opt for healthier alternatives to reduce the negative effects of AGE accumulation in the body.

Source: scitechdaily.com

Acapulco, Mexico braces as Hurricane Otis rapidly intensifies into a perilous Category 5 storm

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ACAPULCO, Mexico — Hurricane Otis intensified from a tropical storm to a dangerous Category 5 hurricane rapidly as it made its way towards Mexico’s South Pacific coast on Tuesday, ultimately making landfall near the resort town of Acapulco early Wednesday. The potential for devastating damage was predicted.

According to the National Hurricane Center, Otis had maximum sustained wind speeds of 160 mph by late Tuesday. It was located about 55 miles south-southeast of Acapulco and moving north-northwest at a speed of 9 mph.

A hurricane warning was in effect from Punta Maldonado to Zihuatanejo, with a hurricane watch in effect from Lagunas de Chacahua to Punta Maldonado.

Otis is expected to maintain its Category 5 hurricane strength until it reaches land, but it is anticipated to rapidly weaken thereafter due to Mexico’s mountainous region. Otis is forecasted to dissipate over southern Mexico on Wednesday night.

As rain began to fall and winds increased, people in Acapulco hurried home and tourists were forced to leave the beaches.

The state government of Guerrero announced the preparation of 396 evacuation centers to accommodate families affected by wind damage and rising waters.

The Mexican Army and Navy have deployed over 8,000 troops equipped with specialized equipment to aid in the rescue operations. The port of Acapulco, where approximately 300 fishing boats are docked, has been closed by the authorities.

Otis is expected to bring 5 to 10 inches of rainfall to Guerrero, with certain areas possibly experiencing up to 15 inches. This raises concerns about landslides and flash floods in Guerrero’s steep mountains.

In the Atlantic Ocean, hurricane tammy After passing through the Lesser Antilles over the weekend, it continued northeast over open ocean with winds of 115 mph. Tammy was located approximately 925 miles south-southeast of Bermuda. The storm is expected to weaken by Thursday, according to the U.S. National Hurricane Center.

Source: www.nbcnews.com

The process of using lasers to transform moon dust into roads

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ESA’s PAVER project aimed to create paved surfaces on the lunar surface using melted lunar regolith. They conducted ground-based tests using a carbon dioxide laser and are planning to use a Fresnel lens on the Moon to focus sunlight. The successful use of lasers to melt simulated lunar dust is a significant development in addressing the challenges posed by lunar dust in future missions.

The construction of roads on the lunar surface is essential for astronauts who will likely be driving rather than walking during their missions. Lunar dust is fine, abrasive, and sticky, leading to equipment damage and spacesuit corrosion. For example, the Apollo 17 lunar rover overheated when its rear fender was lost and replaced with a lunar map, covered in kicked-up dust. The Soviet Lunokod 2 rover experienced a similar fate, dying from overheating after its radiator became covered in dust.

To prevent the accumulation of lunar dust, it is necessary to pave active areas on the Moon, including roads and landing pads. The idea of melting sand to create roads was originally proposed in 1933. ESA’s PAVER project, led by Germany’s BAM Institute for Materials Testing in collaboration with Aalen University, LIQUIFER Systems Group, and the University of Claustal in Austria and Germany, investigated the feasibility of building lunar roads using a similar approach. The project received support from the Institute for Space Materials Physics of the German Aerospace Center (DLR).

The PAVER consortium utilized a 12-kilowatt carbon dioxide laser to melt simulated lunar dust and create a glassy solid surface that can serve as a paved surface on the Moon. They achieved spot sizes of 5 to 10 cm in their trials. By utilizing a 4.5 cm diameter laser beam, they developed a strategy to produce a triangular hollow-centered geometry of about 20 cm in diameter. This approach allowed them to create solid surfaces over large areas of lunar soil suitable for roads or landing pads.

The project’s materials engineer, Advenit Makaya, explained that the current laser used in their experiment functions as a light source instead of lunar sunlight. To achieve equivalent melting on the lunar surface, the laser light would be focused using a Fresnel lens with a diameter of several meters.

The PAVER consortium’s methodology involved trial and error to determine the optimal laser beam size and geometry. They found that larger spot sizes were easier to work with, as heating on a millimeter scale produced challenging agglomeration due to surface tension. With their approach, they were able to create a stable layer of molten regolith, which could be better controlled. The resulting material is glassy and brittle but can withstand primarily downward compressive forces, potentially being repaired if needed.

The research team discovered that reheating a cooled track could cause cracks, leading them to minimize crossover in the geometry. The depth of a single melt layer achieved was approximately 1.8 cm. Depending on the required loads, the constructed structures and roads could consist of multiple layers.

The PAVER consortium estimated that a 100 square meter landing pad with a 2 cm thick high-density material could be constructed in 115 days using their approach.

The PAVER project originated from a call for ideas conducted by ESA’s Basic Activities Discovery Division through the Open Space Innovation Platform (OSIP). Out of 69 submissions, 23 ideas were implemented, including the PAVER project. The project has opened up promising avenues for future research in extraterrestrial manufacturing and construction.

Overall, the successful use of lasers to melt lunar dust represents a significant advancement towards the construction of roads and landing pads on the lunar surface, addressing the challenges posed by lunar dust in future lunar missions.

Source: scitechdaily.com

Newly Discovered Light Properties Unveiled by Centuries-Old Theorem

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Researchers have used a 350-year-old mechanical theorem that is usually applied to tangible objects to uncover new insights into the properties of light. By interpreting light intensity as equivalent to physical mass, they mapped light into a system to which established mechanical equations could be applied. This approach reveals a direct correlation between the degree of non-quantum entanglement of light waves and the degree of polarization. These discoveries have the potential to simplify the understanding of complex optical and quantum properties through more direct light intensity measurements.

Researchers at Stevens Institute of Technology have applied a 350-year-old theorem originally used to describe the behavior of pendulums and planets to uncover new properties of light waves.

Ever since Isaac Newton and Christian Huygens debated the nature of light in the 17th century, the scientific community has grappled with the question: Is light a wave, a particle, or both at the same time at the quantum level? . Now, researchers at the Stevens Institute of Technology have used a 350-year-old mechanical theorem, typically used to describe the motion of large physical objects such as pendulums and planets, to A new relationship has been revealed. The most complex behavior of light waves.

Reveal relationships between light properties

The research, led by Xiaofeng Qian, an assistant professor of physics at Stevens College, and reported in the August 17 online issue of Physical Review Research, shows that the degree of non-quantum entanglement of light waves exists in a direct and complementary relationship. We proved for the first time that it does. It depends on the degree of polarization. As one increases, the other decreases, so the level of entanglement can be directly inferred from the level of polarization, and vice versa. This means that difficult-to-measure optical properties such as amplitude, phase, and correlation (and perhaps even properties of quantum wave systems) can be estimated from something much easier to measure: the intensity of light.

Physicists at Stevens Institute of Technology are using a 350-year-old theorem that explains how pendulums and planets work to uncover new properties of light waves. credit:
Stevens Institute of Technology

“We’ve known for more than a century that light sometimes behaves like waves and sometimes like particles, but reconciling these two paradigms is extremely difficult. We know that,” Chen said. There is a deep connection between the concepts of waves and particles not only at the quantum level but also at the level of classical light waves and point-mass systems. ”

Applying Huygens’ mechanical theorem to light

Qian’s team used a mechanical theorem originally developed by Huygens in his 1673 book on pendulums. This theorem explains how the energy required to rotate an object varies depending on the object’s mass and its axis of rotation. “This is a well-established mechanical theorem that explains how physical systems like clocks and prosthetic limbs work,” Qian explained. “But we were able to show that it can also provide new insights into how light works.”

This 350-year-old theorem describes the relationship between a mass and its rotational momentum. So how does this apply to light, which has no mass to measure? Qian’s team interprets the intensity of light as equivalent to the mass of a physical object, which can be interpreted using Huygens’ mechanical theorem. We mapped those measurements into a coordinate system. “Essentially, we found a way to transform optical systems so that they can be visualized as mechanical systems and described using established physical equations,” he explained. .

Once the researchers visualized light waves as part of a mechanical system, new relationships between wave properties quickly became apparent, such as the fact that entanglement and polarization are clearly related to each other.

“This hasn’t been shown before, but when you map the properties of light onto a mechanical system, it becomes very clear,” Qian says. “What was once abstract becomes concrete. Using mechanical equations, you can literally measure the distance between the ‘center of mass’ and other mechanical points to determine how different properties of light interact with each other. We can show how they are related.”

Elucidating these relationships has important practical implications, as it may allow us to estimate subtle and difficult-to-measure properties of optical systems, and even quantum systems, from simpler and more reliable measurements of light intensity. Qian explained that there is a gender. More speculatively, the researchers’ findings suggest that mechanical systems could be used to simulate and better understand the strange and complex behavior of quantum wave systems.

“It’s still in front of us, but this first study clearly shows that by applying mechanical concepts, we can understand optical systems in entirely new ways,” Qian said. Ta. “Ultimately, this research will help simplify the way we understand the world by allowing us to recognize the essential underlying connections between seemingly unrelated physical laws.”

References: “Bridging coherence optics and classical mechanics: Complementarity of general light polarization entanglement” by Xiao-Feng Qian and Misag Izadi, August 17, 2023. physical review study.
DOI: 10.1103/PhysRevResearch.5.033110

Source: scitechdaily.com