Lifeboat Foundation: Safeguarding Humanity
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Category: biotech/medical – Page 573

How happy do we need to be to have lower chronic disease mortality risk?

Heart disease, cancer, asthma, and diabetes: All are chronic or non-communicable diseases (NCD), which accounted for about 75% of non-pandemic related deaths in 2021. They may result from genetic, environmental, and behavioral factors, or a combination thereof. But can other factors also influence disease risk?

Now, a new Frontiers in Medicine study has investigated the relationship between and health to find out if happier always means healthier and to determine if happiness and co-occurring health benefits are linear or follow a specific pattern.

“We show that subjective well-being, or happiness, appears to function as a population health asset only once a minimum threshold of approximately 2.7 on the Life Ladder scale is surpassed,” said first author Prof Iulia Iuga, a researcher at 1 Decembrie 1918 University of Alba Iulia. “Above this tipping point, increased happiness is associated with a decrease in NCD mortality.”

A mathematical ‘Rosetta Stone’ translates and predicts the larger effects of molecular systems

Penn Engineers have developed a mathematical “Rosetta Stone” that translates atomic and molecular movements into predictions of larger-scale effects, like proteins unfolding, crystals forming and ice melting, without the need for costly, time-consuming simulations or experiments. That could make it easier to design smarter medicines, semiconductors and more.

In a recent paper in Journal of the Mechanics and Physics of Solids, the Penn researchers used their framework, stochastic thermodynamics with internal variables (STIV), to solve a 40-year problem in phase-field modeling, a widely used tool for studying the shifting frontier between two states of matter, like the boundary between water and ice or where the folded and unfolded parts of a protein join.

“Phase-field modeling is about predicting what happens at the thin frontier between phases of matter, whether it’s proteins folding, crystals forming or ice melting,” says Prashant Purohit, Professor in Mechanical Engineering and Applied Mechanics (MEAM) and one of the paper’s co-authors. “STIV gives us the mathematical machinery to describe how that frontier evolves directly from first principles, without needing to fit data from experiments.”

How a human ‘jumping gene’ targets structured DNA to reshape the genome

Long interspersed nuclear element-1 (LINE-1 or L1) is the only active, self-copying genetic element in the human genome—comprising about 17% of the genome. It is commonly called a “jumping gene” or “retrotransposon” because it can “retrotranspose” (move) from one genomic location to another.

Researchers from the Institute of Biophysics of the Chinese Academy of Sciences have now unveiled the molecular mechanisms that underlie L1’s retrotransposition and integration into genomic DNA. Their study was published in Science on October 9.

L1 is the only autonomously active retrotransposon in the and serves as the primary vehicle for the mobilization of most other retrotransposons. Its retrotransposition process is mediated by the reverse transcriptase ORF2p through a mechanism known as target-primed reverse transcription (TPRT). Until now, the manner in which ORF2p recognizes DNA targets and mediates integration had remained unclear.

Brainstem hub for stopping pain signals from reaching the brain

Acute or short-lived pain, despite its bad reputation, is usually a lifesaver. It acts as a transient negative sensory experience that helps us avoid danger. Touch a hot stove, stub a toe, or bonk your head on a low branch, and the nervous system cues up an “Ow!” Over time, the sting fades, the wound heals, but the lesson sticks.

Chronic pain is different; the alarm keeps blaring long after the fire is out, and then the pain itself becomes the problem. Nearly 50 million people in the United States live with chronic pain, an invisible and often untreatable condition that can linger for decades. “It’s not just an injury that won’t heal,” says a neuroscientist, “it’s a brain input that’s become sensitized and hyperactive, and determining how to quiet that input could lead to better treatments.”

Now, research has identified a key to regulating long-term pain states: a group of cells called Y1 receptor (Y1R)-expressing neurons in the brainstem’s lateral parabrachial nucleus (lPBN). These neurons are activated during enduring pain states, but they also integrate information about hunger, fear and thirst, allowing for pain signals to be modulated by other brain circuits signaling more urgent needs.

Christian Maugee — PhD Candidate, University Of Florida — From Patient To Genetics Research Pioneer

From patient to genetics research pioneer — christian maugee — phd candidate, university of florida.

Christian Maugee is a PhD Candidate at the University of Florida, in Genetics and Genomics (http://www.vulpelab.net/graduate-and-undergrad-students.html where his research explores how gene expression differs in the hearts of individuals with Friedrich’s Ataxia (FA), a rare, progressive neurodegenerative disease. His work could lead to new insights into the cardiac complications that can be associated with FA and how to potential treat them better.

Christian’s dissertation work is focused on identifying gene modulators of the transcriptional phenotype of FA in human induced pluripotent stem cells differentiated into cardiomyocytes (hPSC-CMs). He accomplishes this through use of a novel method: Perturb-seq — a CRISPR screen coupled with single cell RNA sequencing (scRNA-seq) readout.

Christian is driven by much more than academic curiosity, as he brings a unique and deeply human perspective to his work as someone living with FA. He doesn’t just study the challenges faced by those with disabilities; he lives them. His work is not only informed by data and theory, but by resilience, authenticity, and a commitment to making research more inclusive and impactful.

In the lab, Christian loves mentoring, and outside of the lab he loves fundraising and raising awareness for FA, mainly through FARA (https://www.curefa.org/) and MDA (https://www.mda.org/disease/friedreic…).

Continue reading “Christian Maugee — PhD Candidate, University Of Florida — From Patient To Genetics Research Pioneer” | >

A hidden “backup heater” that helps burn fat and boost metabolism

Scientists at Washington University School of Medicine in St. Louis have uncovered a new way that brown fat, a type of fat that burns energy, can boost the body’s metabolism. This process allows cells to consume more fuel and generate heat, improving overall metabolic health. Conducted in mice, the research points to new possibilities for using brown fat to address metabolic conditions such as insulin resistance and obesity.

The findings were published Sept. 17 in Nature.

Brown fat is unique because it turns energy (calories) from food into heat. Unlike white fat, which stores energy, or muscle, which uses it immediately, brown fat helps keep the body warm in cold environments. Exposure to cold can increase the amount of brown fat, and scientists have long suggested that activating it could support weight loss by increasing calorie burning.

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