Articles tagged with Cellular Energy
Researchers found that mitochondrial DNA mutations enabled early humans to adapt to colder climates, reducing the risk of diseases such as diabetes and cardiovascular disease. The study suggests a link between genetic history and current disease predispositions.
A recent study has discovered how calorie restriction activates a specific gene called SIR2, leading to increased longevity in yeast and potentially other organisms. The researchers found that a decrease in the levels of NADH allows NAD to better activate Sir2, resulting in extended life span.
A biochemical chain of events governs cell size in multiple diseases. Researchers discovered that AMPK regulates TSC2 activity, which limits mTOR activity, thereby controlling cell growth. This chain of events may be targeted by the drug Rapamycin to treat genetic syndromes.
Research shows that moderate white wine consumption after meals can significantly decrease insulin levels, potentially leading to serious health consequences. The study suggests that drinking white wine alone may activate a new energy system in the human body, influencing glucose production and usage.
A team of researchers led by Dr. Sharyn Endow at Duke University Medical Center has discovered the power stroke that drives molecular motors, which transport nutrients around cells or herd chromosomes during cell division. This breakthrough could help understand diseases like Down's syndrome and prevent them.
Researchers at Princeton University have developed a new method for forming organic photovoltaic films, increasing efficiency by 50 percent. The new material is ultra-thin, flexible, and can be manufactured through printing or spraying, making it suitable for large surfaces.
Researchers at Ohio University are exploring ways to integrate coal with fuel cells to produce clean energy. They plan to conduct experiments to improve the efficiency of syngas, a gas mixture produced from coal gasification, which contains hazardous contaminants that can damage fuel cells.
Scientists at UCSD discovered a protein, HIF-1, that enables white blood cells to function in low-oxygen environments, leading to inflammation. Inhibiting this protein blocks inflammatory responses in mice, offering new hope for treating arthritis and potentially improving cancer treatment.
Researchers have discovered that nerves from the sympathetic branch of the nervous system (PSNS) are connected to fatty tissue, influencing its growth and function. This finding may lead to a better understanding of obesity-related conditions such as type II diabetes and high blood pressure.
A Johns Hopkins-led research team identified a control valve within heart cells that can be switched on to help the organ survive injury during a heart attack. The discovery could lead to new therapies for heart disease.
A team of researchers has discovered that methane-producing microorganisms use a 'pressure valve' mechanism to regulate energy consumption. By allowing hydrogen ions to leak through the cell membrane at high concentrations, the bacteria minimize energy loss and maintain optimal conditions for growth.
Researchers visualized the enzyme formate dehydrogenase-N to a resolution of 1.6 angstroms, providing valuable insight into nitrate respiration and the molecular machinery of life. The discovery supports Peter Mitchell's 'chemiosmotic' theory, which describes how cells convert energy into usable form.
A secreted mitochondrial peptide regulates vascular tone by acting on the endothelial nitric oxide synthase, leading to increased NO production and vasodilation. This peptide also modulates the activity of other key enzymes involved in vascular relaxation.
Researchers at Virginia Tech have demonstrated improved fuel cell materials and systems, enabling operation at higher temperatures. The team will receive $2 million in grants to develop next-generation polymer electrolyte membranes and membrane electrode assemblies.
Kinesin proteins use a unique 'head-over-head' mechanism to propel themselves forward, allowing them to transport vital cargo through the cell. Researchers have discovered that this process is controlled by the breakdown of ATP and involves a rocking motion that allows kinesin to complete long-distance walks in a few seconds.
Researchers have determined the complete crystal structure of cytochrome bc1, a crucial protein complex in the mitochondrial respiratory chain. This breakthrough has provided detailed images of the complex at an unprecedented resolution of 3 angstroms, shedding light on its role in energy production for living cells.