Articles tagged with Mitochondrial Diseases
A new study by UCL researchers found that tailoring whole genome sequencing analysis to individual patients can double the diagnostic rates of rare diseases. The personalised approach increased the diagnostic rate from 16.7% to 31.4%, detecting potential disease-causing variants in a further 3.9% of patients.
Researchers have discovered that mutations in mitochondrial-related genes can trigger hyperinflammation, leading to diseases such as Crohn's disease and tuberculosis. The study found that these mutations lead to a new type of cell death called necroptosis, which causes an aggressive inflammatory immune response.
Researchers at Massachusetts General Hospital and Children's Hospital Philadelphia have identified a rare genetic disorder affecting mitochondrial energy production. The study found that identical twins exhibited hypermetabolism due to hyperactive mitochondria, resulting in low body weight despite consuming more calories than needed.
Scientists at Duke-NUS Medical School have discovered the critical role of small microproteins in assembling larger protein complexes inside energy-generating cell components known as mitochondria. The study highlights how microproteins regulate energy supply and mitigate mitochondrial dysfunction, a feature underlying various diseases.
Researchers at CSU found that a gene called MSH1 helps keep plant mitochondrial genomes mutation-free, allowing for quick sorting of normal and diseased DNA. This process is more efficient in plants than in humans, where mutations are passed down through generations.
Extracellular vesicles and exosomes are membrane-bound vesicles that facilitate intercellular exchange of proteins, lipids, and genetic material. They will be highlighted in upcoming events focusing on mitochondrial quality control, skin ageing, and microbiota.
Researchers from Trinity College Dublin have developed a new gene therapy approach targeting mitochondrial function to treat dry AMD, a debilitating eye disease. The therapy has shown benefit in multiple models of the condition, offering hope for a potential treatment that could help millions globally.
Researchers used multiple 'omics' techniques to evaluate spindle transfer, a new IVF option that avoids mitochondrial disease inheritance. The study found no significant differences in DNA copy number or RNA expression profiles between spindle transfer and control embryos.
University of Cincinnati researchers have discovered a technique using light-activated proteins to normalize dysfunctional mitochondria in cells. This method has the potential to treat certain diseases, including cancer and neurodegenerative disorders.
In a new study, researchers found that microglia cells are responsible for neuronal death in a mitochondrial disease mouse model. Suppressing these cells with the drug Pexidartinib increased life expectancy and reduced motor problems. Further research is needed to understand the specific process by which microglia attack neurons.
The 24th International Conference on Oxidative Stress Reduction, Redox Homeostasis & Antioxidants, shed light on the latest redox field innovations and the future of redox medicine. Keynote speaker Prof. Helmut Sies discussed stringently selective modulation of enzymatic oxidant sources and sinks in redox nanomedicine.
Researchers discovered a novel mechanism by which non-coding 7S RNA regulates mitochondrial gene expression in human cells. The study found that 7S RNA inhibits transcription via mitochondrial RNA polymerase dimerization, shedding light on the molecular basis of this process.
A study by Brazilian scientists reveals that autophagy can modulate the accumulation of mutant mitochondrial DNA in cells during aging. The researchers found that mice with liver-specific atg7 knockout showed reduced buildup of mutant DNA, suggesting a potential therapeutic target for diseases associated with mitochondrial DNA mutations.
Researchers have identified the genetic causes of three mitochondrial diseases and proposed 20 additional possibilities for further investigation using a new approach. The study provides a platform to better understand how mitochondria's hundreds of proteins work together, which could lead to improved diagnoses and treatments.
Researchers discovered that a conserved receptor molecule called Tom70 coordinates the balance between protein production and import into mitochondria. This finding ties to increased lifespan and delayed mitochondrial dysfunction when Tom70 levels are elevated. The study provides new insights into aging and age-related diseases.
Academic researchers will present newest discoveries on redox in aging, immunity, ocular disorders, and fertility. The conference highlights the mechanisms of redox control like Nrf2 signaling pathway.
A new study found that endurance exercise improves mitochondrial function in some patients with primary mitochondrial diseases, but not others. The research highlights the importance of considering individual genetic status when recommending exercise as therapy.
Scientists have successfully developed a gene-editing platform called TALED that can perform A-to-G base conversion in mitochondria, the final missing piece of the puzzle in gene-editing technology. This breakthrough has significant implications for treating previously incurable genetic diseases caused by mutations in mitochondrial DNA.
Researchers discovered that lipid droplets play a crucial role in mitochondrial recycling, and impairing DGAT1 activity leads to reduced recycling and increased cell stress. The study provides new insights into iron homeostasis and its impact on cellular metabolism.
A new CNIC study warns that mitochondrial therapeutic interventions can cause damage due to the mixing of mitochondrial DNAs from two distinct origins. This can lead to medium- and long-term health issues, including heart failure, pulmonary hypertension, and muscle loss.
Researchers found that chronic lactate exposure can lead to cellular disruptions, decreased fatty acid transport, and alterations of mitochondrial membranes, which may contribute to the development of heart failure and type 2 diabetes. The study suggests that lactate accumulation could be a major player in disease progression.
Researchers identified a mechanism that helps explain how certain kinds of genetic disorders are transmitted from mother to child. The study showed that mutant mtDNA builds up in the final stages of egg formation and can impair mitochondrial function, leading to disease.
Researchers from the Mitochondrial Medicine Frontier Program at CHOP found that primary developmental delays are a common symptom of Leigh syndrome, occurring even before metabolic stroke and regression. These delays are associated with poor long-term educational outcomes and worse disease progression.
Scientists demonstrate a definitive link between mitochondrial oxidative damage and cognitive dysfunction in Alzheimer's disease using a transgenic mouse model. The study found that Aβ1-42 aggregation in the hippocampus caused cognitive impairment, while oxidation led to mitochondrial dysfunction.
A new pathway has been discovered to explain how excessive alcohol consumption damages the liver, specifically through mitochondrial dysfunction. By targeting an enzyme called MATα1, researchers believe they can develop a new treatment for people suffering from alcohol-associated liver disease.
Researchers discovered that deficient mitophagy leads to human disease and developed a method to analyze mitochondrial recycling in diseased muscle. Pharmacological activation of mitophagy reversed the progression of mitochondrial muscle disease, offering potential treatment for this condition.
Scientists at the University of Cambridge have successfully modified the mitochondrial genome in live mice using gene-editing techniques, offering a promising approach to treat incurable mitochondrial disorders. The treatment aims to correct spelling mistakes in defective mitochondrial DNA, producing healthy mitochondria that allow cel...
A study found that a daily supplement of urolithin A improved muscle function and reduced inflammation in older adults. The supplement, produced by gut bacteria, was shown to stimulate mitophagy, a process that recycles damaged mitochondria.
A team of Weill Cornell Medicine investigators created a comprehensive atlas, called Tau interactome, that maps all the Tau protein's interactions with other proteins in human neurons. They found that mutations diminish Tau-mitochondrial protein interaction may hamper energy production and lead to cognitive decline.
Researchers found that a Parkinson's disease mutation mislocalizes iron in activated microglia, leading to toxic iron accumulation. This mislocalization may explain the disease's progression and provide a basis for therapies targeting LRRK2.
Researchers at Tel-Aviv University have shed light on the Sigma-1 receptor's topology and function in neurodegenerative diseases. The study reveals that the receptor is retained in the endoplasmic reticulum and its amino end faces the cytoplasm, providing a crucial mechanism for therapeutic approaches to alleviate suffering from ALS.
A new study from Keck School of Medicine of USC shows that vaping is associated with dysregulation of mitochondrial genes and immune response genes, similar to smoking. The research found that over 80% of gene dysregulation in vapers correlated with the intensity and duration of current vaping.
A new study found that whole genome sequencing increases the diagnosis of rare genetic disorders by 31%, shortening the diagnostic odyssey for affected families. This approach provides opportunities for future research and can identify non-mitochondrial disorders with specific treatments.
Research from the University of Cincinnati reveals that female fat tissue contains more mitochondria, providing protection against obesity and metabolic diseases. The study suggests a link between mitochondrial gene Ndufv2 and lower incidence of complications such as diabetes and high cholesterol.
Researchers have identified the structure of a protein complex, supercomplex CIII2CIV, that plays a crucial role in energy conversion in animal cells. The complex pumps charged particles through the mitochondrial membrane, facilitating energy production.
Researchers at UVA Health System have made a groundbreaking discovery about cells' 'batteries,' revealing how they sense problems and perform quality control on mitochondrial function. This finding could lead to better treatments for non-communicable diseases, which are estimated to cause 71% of all deaths.
Scientists at Kyoto University developed a chemical compound that can tag and remove mutant DNA sequences from mitochondria, potentially treating mitochondrial diseases. The approach overcomes existing problems with genetic material injection and antioxidant drugs.
Researchers have created live cell models that mimic mitochondrial disease cells, allowing for drug studies and further research into the disease. These cell lines have the potential to support upcoming research and provide relief to patients and their families.
A study of over 350,000 people found that genetic variants in mitochondrial DNA can increase the risk of type 2 diabetes, multiple sclerosis, and other diseases. Additionally, mitochondrial DNA influences characteristics such as height and lifespan. The study suggests complex interaction between mitochondrial and nuclear DNA.
New research reveals TMEM126A gene mutations cause mitochondrial energy production issues, leading to impaired vision and hearing. Mitochondrial disease affects almost any part of the body due to reduced energy conversion and production.
The University of Arkansas has been awarded a $10.8 million NIH grant to establish an integrative metabolic research center, focusing on diseases like cancer, diabetes, and obesity. The center will combine expertise in advanced imaging, bioenergetics, and data science to explore the role of cell and tissue metabolism.
A review proposes eight hallmarks of environmental exposures that contribute to disease, including oxidative stress, genomic alterations, and endocrine disruption. Research is needed to understand the complex mechanisms by which pollutants affect human biology.
A study by Children's Hospital of Philadelphia researchers has identified a combination therapy that provides measurable benefits to patients with mitochondrial respiratory chain disorders. The treatment, which includes glucose, nicotinic acid, and N-acetylcysteine, showed improved lifespan, mitochondrial membrane potential, and preven...
A new study at Karolinska Institutet has found a crucial link between mitochondrial function and serious diseases, including diabetes, heart disease, and neurodegenerative disorders. The research suggests that modifications to proteins within the mitochondria can affect energy production and may be modulated by diet.
Researchers used a non-invasive imaging technique to measure mitochondrial function in patients with MND, finding phosphocreatine levels depleted and inorganic phosphates elevated. This technique could help assess the effectiveness of treatments for MND.
Researchers at the University of Exeter have identified a new treatment approach for mitochondrial diseases, such as Leigh Syndrome, by using novel drugs that metabolically reprogram mitochondria to generate energy. The study successfully normalized or improved energy production in genetically mutated microscopic worms.
A long-term study of gene therapy in monkeys reveals no adverse health effects, bolstering the scientific basis for mitochondrial replacement therapy in human clinical trials. Researchers found varying levels of carryover maternal mitochondrial DNA, but it was not enough to cause health effects.
Seth Shipman, a Gladstone Institutes investigator, has received the NIH Director's New Innovator Award to develop innovative technologies to edit mitochondrial DNA. His research could lead to new treatments for diseases caused by mitochondrial DNA mutations.
Researchers at Massachusetts General Hospital used single-cell analysis to uncover new details about mitochondrial diseases, including lower levels of disease-causing mutations in certain immune cells. This discovery could lead to improved diagnosis and monitoring of the diseases, as well as potential new therapeutic strategies.
Researchers found that misrouted mitochondrial RNA triggers an immune response, leading to cell death in spiny projection neurons ravaged by Huntington's disease. The study also identified a master regulator of gene transcription alterations and matched human brain samples with mouse models.
A cutting-edge study has identified ATAD3 as the most common cause of lethal mitochondrial disease in children dying soon after birth. The study found that spontaneous gene alterations resulted in fatal heart failure, but parents have a low risk of passing the disease to their next child.
Researchers at Karolinska Institutet have discovered that a lack of mitochondria causes severe disease in children, including brain dysfunction and neurological impairment. The study, published in EMBO Molecular Medicine, suggests that inhibition of mitochondrial degradation may provide a new treatment strategy for affected patients.
A new mutation in the mt-Cyb gene of a mouse model for GRACILE syndrome drastically speeds up disease progression. The discovery provides a valuable tool for studying mitochondrial diseases and their function.
Researchers at Massachusetts General Hospital have developed a new therapy to alleviate problems caused by dysfunctional mitochondria, which produce energy in cells. The discovery could lead to treatments for rare diseases and age-associated disorders characterized by redox imbalance.
Scientists identified a protein in fruit flies that can target mitochondria to reverse disease-causing mutations. This discovery may provide clues about treating human mitochondrial diseases, which currently have no cure. Researchers used three-parent flies to study the influence of nuclear DNA on mitochondrial genome competition.
A study reveals how mitochondrial DNA is transmitted between generations, showing that a bottleneck occurs during oogenesis, reducing genetic diversity. This process can affect the inheritance of disease-related mutations, making it crucial for genetic counseling in women planning pregnancies.
Researchers discovered a phenomenon in brain cells where mitochondria 'eat themselves up' at an early stage of neurodegeneration. The study found that this self-destruction is selectively present in neurons prone to degeneration in ALS patients, providing potential targets for new therapies.
Researchers at Northwestern University have discovered a new phenomenon in the brain where mitochondria self-destruct, leading to early stages of neurodegeneration. The study found that this process occurs selectively in neurons vulnerable to future degeneration, providing a potential target for drug therapies.
Researchers identified over 30 variations in the MT-ATP6 gene with diverse clinical symptoms and biochemical features. The study highlights the need for more precise clinical tests to determine treatment options for patients affected by mitochondrial disorders.
Researchers found therapeutic potential in a rare kidney disease treatment for some mitochondrial disorders, improving mitochondrial metabolism and reducing oxidative stress. However, dosages must be carefully controlled due to narrow therapeutic windows.