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Diseases and Conditions

“Revolutionizing Respiratory Disease Research with Lung-on-a-Chip Technology”

Scientists at Kyoto University have developed a groundbreaking “lung-on-a-chip” that can mimic the distinct regions of human lungs—airways and alveoli—to study how viruses like COVID-19 affect them differently. Powered by isogenic induced pluripotent stem cells (iPSCs), the system offers a high-fidelity way to model personalized immune responses and test drug effectiveness. This innovation opens the door to precision medicine, deeper understanding of emerging viruses, and even modeling of other organs in the future.

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Respiratory infections like COVID-19 have ravaged global healthcare systems and caused immense suffering. These viruses often target the lungs, particularly the airway and alveoli regions, leading to severe damage.

Traditionally, researchers rely on animal models and simple in vitro systems to study lung responses to infections. However, these methods are limited by their inability to accurately replicate the complex interactions between different lung regions.

A team of innovative researchers at Kyoto University has developed a microphysiological system (MPS) that can simulate both the airway and alveoli regions of human lungs. This groundbreaking device enables scientists to investigate viral pathologies with unprecedented accuracy.

“Our iPSC-derived lung chips allow us to model distinct responses from proximal and distal lung regions, all originating from an isogenic source,” says lead author Sachin Yadav, a PhD student at Kyoto University. “This approach provides a more accurate platform for studying tissue- and virus-specific disease mechanisms.”

By combining their MPS with isogenic iPSCs (induced pluripotent stem cells), the researchers are poised to revolutionize the treatment of respiratory diseases.

“Our findings can be used to develop models of other human organs and multi-organ systems, facilitating the study of organ interactions,” notes team leader Ryuji Yokokawa.

“The ability to accurately replicate host responses to different viruses and lung regions significantly enhances our understanding of emerging viruses and facilitates early drug screening,” says senior researcher Takeshi Noda.

“Integrating iPSCs into our MPS offers unparalleled advantages, with cells providing benefits such as personalized medicine and isogenic models,” adds Shimpei Gotoh, another senior team member.

This innovative technology has far-reaching potential beyond viral infections. It can be used to enhance personalized medicine by allowing researchers to study patient-specific iPSCs in the context of various conditions.

Back and Neck Pain

The French Fry Effect: Scientists Reveal the Surprising Truth About Potatoes and Diabetes Risk

French fries may be more than just a guilty pleasure—they could raise your risk of type 2 diabetes by 20% if eaten three times a week, while the same amount of boiled, baked, or mashed potatoes doesn’t appear to have the same effect.

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The relationship between potatoes and type 2 diabetes has long been debated. While it’s known that potatoes contain several essential nutrients like fiber, vitamin C, and magnesium, their high starch content also contributes to a higher glycemic index, potentially increasing the risk of developing type 2 diabetes. A recent study published in The BMJ sheds new light on this topic by investigating the association between different potato preparation methods and the risk of type 2 diabetes.

Researchers analyzed data from over 205,000 health professionals across three large US studies conducted between 1984 and 2021. Participants were free of diabetes, heart disease, or cancer and completed detailed food questionnaires every four years. The study found that for every three weekly servings of total potato, the rate of type 2 diabetes increased by 5%. However, a similar intake of baked, boiled, or mashed potatoes was not associated with a significantly increased risk.

In contrast, eating French fries three times a week was linked to a 20% higher risk of developing type 2 diabetes. Replacing total potatoes or baked, boiled, or mashed potatoes with whole grains lowered the type 2 diabetes rate by 8%. Substituting French fries with whole grains reduced the risk by 19%. On the other hand, replacing total potatoes or baked, boiled, or mashed potatoes with white rice increased the risk of type 2 diabetes.

This observational study highlights that the association between potato intake and type 2 diabetes risk depends on the specific foods used as replacement. The findings align with current dietary recommendations promoting whole grains as part of a healthy diet for preventing type 2 diabetes.

While baked, boiled, or mashed potatoes can be part of a healthy and sustainable diet, especially when prepared in moderation, it’s essential to consider preparation methods and replacement foods when guiding the public or informing policy. Future studies from diverse populations that account for both preparation methods and substitution analysis are needed to further understand this relationship and provide more tailored recommendations.

In conclusion, the French fry effect is a significant concern, but not all potatoes are created equal. By being mindful of our potato choices and making informed decisions about food substitutions, we can reduce the risk of type 2 diabetes and promote overall well-being.

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Colon Cancer

Scientists Discover a Tiny Molecule That Could Revolutionize Weight Loss Treatment

Researchers at the Salk Institute have used CRISPR to uncover hidden microproteins that control fat cell growth and lipid storage, identifying one confirmed target, Adipocyte-smORF-1183. This breakthrough could lead to more effective obesity treatments, surpassing the limitations of current drugs like GLP-1.

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The fight against obesity has been an ongoing battle for decades. With over one billion people worldwide affected by this condition, scientists are constantly seeking new and effective treatments. Recently, researchers at the Salk Institute have made a groundbreaking discovery that could potentially change the game. They’ve identified a tiny molecule called Adipocyte-smORF-1183, which plays a crucial role in regulating fat cell biology and lipid accumulation.

This breakthrough was made possible by using CRISPR gene editing to screen thousands of fat cell genes. The researchers found dozens of genes that likely code for microproteins involved in either fat cell proliferation or lipid accumulation. One of these potential microproteins, Adipocyte-smORF-1183, was verified to influence lipid droplet formation in fat cells.

The discovery of this molecule is a significant step towards understanding the complex energy storage system in our bodies. It also opens up new possibilities for developing targeted therapies that can specifically address obesity and related metabolic disorders.

While more research is needed to fully understand the implications of Adipocyte-smORF-1183, this breakthrough is a promising development in the fight against obesity. As scientists continue to study this molecule and its role in fat cell biology, we may see new and innovative treatments emerge that can help millions of people worldwide manage their weight and improve their overall health.

In related news, researchers at Scripps Research Institute have also been studying microproteins involved in fat cell differentiation and proliferation. Their work has identified several potential candidates for further investigation, which could lead to new therapeutic targets for obesity and metabolic disorders.

The study was supported by various grants from the National Institutes of Health, Ferring Foundation, Clayton Foundation, and Larry and Carol Greenfield Technology Fund. Further validation or screening of new cell libraries will expand the list of potential drug candidates, setting the stage for the new-and-improved obesity and metabolic disorder therapeutics of the future.

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Chronic Illness

Scientists Uncover Hidden Brain Shortcut for Weight Loss without Nausea

Scientists have uncovered a way to promote weight loss and improve blood sugar control without the unpleasant side effects of current GLP-1 drugs. By shifting focus from neurons to brain support cells that produce appetite-suppressing molecules, they developed a modified compound, TDN, that worked in animal tests without causing nausea or vomiting.

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Scientists have made a groundbreaking discovery that could revolutionize the way we approach weight loss. A multidisciplinary team led by Robert Doyle, a chemistry professor at Syracuse University, has identified a hidden brain shortcut that can help people lose weight without experiencing nausea, a common side effect of current weight loss medications.

Current weight loss and diabetes drugs often target brain neurons that control appetite but frequently cause unpleasant side effects like nausea and vomiting. In fact, 70% of patients stop treatment within a year due to these side effects. Doyle’s team has been researching alternative targets for treating obesity and diabetes, looking beyond neurons to study “support” cells such as glia and astrocytes.

The research team discovered that support cells in the hindbrain naturally produce a molecule named octadecaneuropeptide (ODN), which suppresses appetite. In lab tests, injecting ODN directly into rats’ brains made them lose weight and improve how they processed glucose. However, injecting directly into the brain isn’t a practical treatment for people.

To overcome this limitation, researchers created a new version of the molecule named tridecaneuropeptide (TDN), which could be given to human patients through regular injections akin to today’s Ozempic or Zepbound. When tested in obese mice and musk shrews, TDN helped the animals lose weight and respond better to insulin without causing nausea or vomiting.

One goal of the research team is to produce weight loss without aiming new therapeutic molecules at neurons. The new TDN molecule bypasses neurons, taking a shortcut to directly target support cells, which researchers found also produce appetite suppression. This approach has the potential to reduce the unpleasant side effects caused by GLP-1 drugs.

“The idea is to start the process halfway through, reducing the marathon of chemical reactions and negative side effects,” says Doyle. “If we could hit that downstream process directly, then potentially we wouldn’t have to use GLP-1 drugs with their side effects. Or we could reduce their dose, improving the toleration of these drugs.”

A new company called CoronationBio has been launched to turn this discovery into a real-world treatment. The company has licensed intellectual property related to ODN derivatives for the treatment of obesity and cardio-metabolic disease from Syracuse University and the University of Pennsylvania.

Their focus is on translating candidates into the clinic, aiming to start human trials in 2026 or 2027. This breakthrough has the potential to revolutionize the way we approach weight loss, providing a more comfortable and effective solution for millions of people worldwide.

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