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Cancer

Unlocking the Potential of Estrogen-related Receptors in Treating Metabolic and Muscular Disorders

Researchers confirm and explore the role of estrogen-related receptors in regulating energy production in muscle cells during exercise. The findings indicate that developing a drug to boost estrogen-related receptors could be a powerful way to restore energy supplies in people with metabolic disorders, such as muscular dystrophy.

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Estrogen-related receptors could be the key to repairing energy metabolism and muscle fatigue. Mitochondrial dysfunction is difficult to treat, but recent findings from the Salk Institute show that a group of proteins called estrogen-related receptors could be a new and effective therapeutic target. These receptors play an important role in muscle cell metabolism, especially during exercise.

When our muscles need more energy, estrogen-related receptors can increase the number of mitochondria and enhance their energetic output within muscle cells. Developing a drug to boost these receptors could be a powerful way to restore energy supplies in people with metabolic disorders, such as muscular dystrophy.

Estrogen-related receptors are one branch of a family of proteins called nuclear hormone receptors. These receptors attach themselves to our DNA and control which genes get turned “on” or “off.” In the 1980s, researchers led by Ronald Evans discovered this family of proteins and recognized their role in energy metabolism. Now, they’ve learned that estrogen-related receptors are indispensable drivers of mitochondrial growth and activity in our muscles.

Exercise triggers mitochondrial biogenesis, wherein a cell increases the number of its mitochondria to produce more fuel. But exercising is difficult for people with muscular and metabolic disorders, so scientists have been looking for another way to stimulate this process. Estrogen-related receptors play a crucial role in this process, particularly during exercise.

Researchers deleted three different forms of estrogen-related receptors (alpha, beta, and gamma) in muscle tissues of mice and examined the resulting effects. They found that while the most abundant type was the alpha receptor, loss of just this one receptor had mild impacts on muscle tissue. However, if both alpha and gamma types were deleted, this led to serious impairments in muscle mitochondrial activity.

Exercise-induced mitochondrial biogenesis was driven by another protein called PGC1α, which relies on partner proteins to get the job done. Unlike PGC1α, estrogen-related receptors can bind directly to mitochondrial energetic genes and turn them “on,” making it a promising target for improving muscle’s mitochondrial performance.

“Our findings suggest that activating estrogen-related receptors could not only help fuel people’s muscles, but it could also have other beneficial effects across the whole body,” says first author Weiwei Fan. “Improving mitochondrial function and energy metabolism could help strengthen many different organ systems, including the brain and heart.”

Understanding how estrogen-related receptors function in muscle cells creates new opportunities to treat all parts of the body affected by mitochondrial dysfunction. Future research will continue to explore the function and regulation of both alpha- and gamma-type receptors, which may lead to other potential therapeutic targets.

The work was supported by several organizations, including the National Institutes of Health and the Larry L. Hillblom Foundation, Inc.

Alternative Medicine

A Simple One-Minute Self-Exam Could Save Young Men’s Lives: What You Need to Know

A new survey shows most Americans wrongly think testicular cancer is an older man’s issue, despite it most commonly affecting men aged 20 40. Early detection is key but misconceptions about symptoms and screening remain widespread.

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A recent survey conducted by The Ohio State University Comprehensive Cancer Center — Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC — James) has shed light on the alarming fact that many Americans are unaware of the prevalence of testicular cancer among young men. According to the American Cancer Society, nearly 10,000 adults in the United States are affected by this disease each year.

The survey found that only 13% of U.S. adults correctly identified testicular cancer as most commonly affecting men under 40. This is a concerning statistic, given that the disease is most prevalent among men between the ages of 20 and 40. Moreover, two-thirds (65%) of respondents believed that an evaluation should be part of an annual exam after age 40, which is not necessarily true.

Cancer experts stress that self-exams are most relevant between the ages of 20 and 40. Shawn Dason, MD, a urologic oncologist at the OSUCCC — James, noted that “a lot of men are surprised that testicular cancer is most common among young men.” He emphasized the importance of routine self-exams to detect any lumps or changes in the testicles.

The survey also revealed that younger Americans, aged 18-29 and 30-49, were more likely to say that testicular cancer affects fertility (68% and 61%, respectively). However, they were also more likely to incorrectly agree with the statement that testicular cancer symptoms are always painful (18%).

To educate yourself on this important topic, here are some key takeaways:

* Testicular cancer is most common among men under 40.
* Self-exams should be conducted monthly between the ages of 20 and 40.
* If you feel something out of the ordinary, like a lump or bump, or if the testicle changes in size, call your doctor.
* Early detection can lead to successful treatment.

Remember, taking just one minute each month to check yourself could save your life. Don’t ignore any unusual symptoms – seek medical attention immediately.

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Anxiety

Single Psilocybin Dose Delivers Long-Term Depression Relief for Cancer Patients

Psilocybin, the active ingredient in magic mushrooms, might just revolutionize how depression and anxiety are treated in cancer patients. In a groundbreaking trial, a single dose combined with therapy significantly reduced emotional suffering, and these effects often lasted over two years. As follow-up studies expand the research to multiple doses and larger samples, scientists are eyeing a possible new standard of care that merges psychedelics with psychological support.

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A groundbreaking clinical trial has revealed that a single dose of psilocybin, a naturally occurring psychedelic compound found in mushrooms, can provide sustained reductions in depression and anxiety in individuals with cancer suffering from major depressive disorder. The findings, published in the peer-reviewed journal CANCER, suggest that this treatment approach may offer long-term relief for cancer patients struggling with depression.

The study involved 28 participants who received psychological support from a therapist prior to, during, and after receiving a single 25-mg dose of psilocybin. Two years later, a significant proportion of these individuals demonstrated lasting reductions in depression and anxiety. Specifically:

* 53.6% (15 patients) showed a sustained reduction in depression.
* 50% (14 patients) experienced remission from depression as well as reduced anxiety.
* 42.9% (12 patients) reported reduced anxiety at the two-year mark.

Building on these promising results, an ongoing randomized, double-blind trial is currently evaluating up to two doses of 25 mg of psilocybin versus placebo for treating depression and anxiety in cancer patients. This study aims to determine whether repeating the treatment can resolve depression for more than half of the participants.

According to lead author Manish Agrawal, MD, from Sunstone Therapies, “One dose of psilocybin with psychological support has a long-term positive impact on relieving depression for as much as 2 years for a substantial portion of patients with cancer. If randomized testing shows similar results, this could lead to greater use of psilocybin to treat depression in patients with cancer.”

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Accident and Trauma

“Unveiling the Invisible Killer: PM 1 Pollution Uncovered Across America”

A groundbreaking 25-year analysis using satellite technology has now mapped PM 1 levels across the U.S., uncovering how wildfires, vehicle emissions, and industrial byproducts have shaped the air we breathe. Although regulations have improved air quality over time, rising wildfire activity poses a growing challenge. This new dataset gives scientists and regulators a vital tool for targeting the most harmful pollutants and protecting public health.

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The article provides valuable information about the scope of “PM 2.5” pollution in the United States but reveals that less is known about its even smaller cousin, “submicron” or “PM 1” particulate matter. The study published in The Lancet Planetary Health by researchers at Washington University in St. Louis aimed to quantify PM 1 over the past 25 years across America.

Randall Martin, a professor of energy, environmental and chemical engineering, emphasized that this measurement serves as a starting point for understanding which pollutants regulators could target to make the most effective health impact. The study found that the very small particles quantified generally come from direct air emissions or secondary processes when sulfur dioxide or nitrogen oxides are released through fuel combustion and burning coal.

The researchers calculated their submicron estimates based on known ratios of what makes up PM 2.5 particles, which include seven main components such as sulfate, nitrate, and mineral dust. This research sets the stage for further analysis of where, how, and why certain types of particles congregate, and how they can affect the environment and human body.

The study also revealed that pollution regulation does help. Average PM 1 levels in the air people breathe dropped sharply from 1998 to 2022, thanks to decades of environmental regulations like the Clean Air Act. However, this progress has slowed since 2010, mainly because of rising wildfire activity.

Other countries like China have a head start tracking nationwide PM 1, but now the U.S. can quickly catch up with this new dataset offering unprecedented information for the United States about an important pollutant for which few other measurements exist.

The article concludes that future pollution controls will need to address emerging, non-fossil fuel sources, and that working with epidemiologists to assess the association of PM 1 with health outcomes is a next step in this research.

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