Mitochondrial respiratory chain (MRC) dysfunction is linked to mitochondrial disease as well as other common conditions such as diabetes, neurodegeneration, cancer, and aging. Thus, the evaluation of MRC enzymatic activities is fundamental for diagnostics and research purposes on experimental models. Here, we provide a verified and reliable protocol for mitochondria isolation from various samples and subsequent measurement of the activity of MRC complexes I-V plus citrate synthase (CS) through UV-VIS spectrophotometry. For complete details on the use and execution of this protocol, please refer to Brischigliaro et al. (2021).
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http://dx.doi.org/10.1016/j.xpro.2022.101322 | DOI Listing |
J Clin Med
January 2025
Disturbances of Growth and Development on Children Research Center, "Victor Babeș" University of Medicine and Pharmacy, 300041 Timișoara, Romania.
Long COVID, also known as post-acute sequelae of SARS-CoV-2 infection (PASC), is increasingly recognized as a condition affecting not only adults but also children and adolescents. While children often experience milder acute COVID-19 symptoms compared to adults, some develop persistent physical, psychological, and neurological symptoms lasting for weeks or months after initial infection. The most commonly reported symptoms include debilitating fatigue, respiratory issues, headaches, muscle pain, gastrointestinal disturbances, and cognitive difficulties, which significantly impact daily activities, schooling, and social interactions.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha 410012, China.
Type 2 diabetes mellitus (T2DM) is a common metabolic disease that is frequently accompanied by multiple complications, including diabetic myopathy, a muscle disorder that is mainly manifested as decreased muscle function and reduced muscle mass. Diabetic myopathy is a relatively common complication among patients with diabetes that is mainly attributed to mitochondrial dysfunction. Therefore, we investigated the mechanisms underlying diabetic myopathy development, focusing on the role of microRNAs (miRs).
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Hospital General Universitario de Elche-FISABIO, 03203 Elche, Spain.
Chronic obstructive pulmonary disease (COPD) exacerbations are major contributors to morbidity and mortality, highlighting the need to better understand their molecular mechanisms to improve prevention, diagnosis, and treatment. This study investigated differential gene expression profiles and key biological processes in COPD exacerbations categorized based on sputum microbiome profiling. An observational study was performed on a cohort of 16 COPD patients, who provided blood and sputum samples during exacerbations, along with five stable-state samples as controls.
View Article and Find Full Text PDFMedicina (Kaunas)
January 2025
Department of Pathology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China.
Mitochondria play key roles in maintaining cell life and cell function, and their dysfunction can lead to cell damage. Mitochondrial ribosomal proteins (MRPs) are encoded by nuclear genes and are assembled within the mitochondria. MRPs are pivotal components of the mitochondrial ribosomes, which are responsible for translating 13 mitochondrial DNA-encoded proteins essential for the mitochondrial respiratory chain.
View Article and Find Full Text PDFMicroorganisms
January 2025
Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
Although the mitochondrial genome is an attribute of all eukaryotes, some yeast species (called petite-positive) can replicate without mitochondrial DNA (mtDNA). Strains without mtDNA (known as rho mutants or petite mutants) are respiration-deficient and require fermentable carbon sources (such as glucose) for their metabolism. However, they are compromised in many aspects of fitness and competitiveness.
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