Coenzyme Q10 (CoQ10 or ubiquinone) is an essential component of the mitochondrial electron transport chain and is also present in various cellular membranes and in plasma lipoproteins. Diabetes, cardiovascular, neurodegenerative, and preeclampsia diseases are all associated with an alteration of CoQ10 level or its redox status. During pregnancy, we note that the plasma content of CoQ10 is significantly higher than amniotic. In the fetal growth restriction group, amniotic total CoQ10 levels were significantly higher versus healthy, while the amniotic oxygen radical absorbing capacity level was significantly lower. A significant negative correlation was observed between amniotic total CoQ10 and birthweight. Our observation leads to the hypothesis that the amniotic midtrimester CoQ10 content may be a marker of subsequent obstetric complications.
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http://dx.doi.org/10.1089/ars.2014.5936 | DOI Listing |
Zhonghua Yi Xue Yi Chuan Xue Za Zhi
January 2025
Department of Pediatric Neurorehabilitation, Zhuhai Maternal and Child Health Care Hospital, Zhuhai, Guangdong 519000, China.
Objective: To investigate the clinical features and genetic variants associated with Multiple mitochondrial dysfunction syndrome (MMDS) type 3 in two children.
Methods: Two children diagnosed with MMDS type 3 at Zhuhai Maternal and Child Health Care Hospital in January 2021 were selected for this study. A retrospective analysis of their clinical data was carried out.
J Orthop Res
January 2025
Department of East Hospital Orthopaedic Trauma, Zibo Central Hospital, Zibo, China.
Ewing sarcoma (ES) is a malignant bone tumor prevalent among children and adolescents. Disulfidptosis represents a novel form of cell death; however, the mechanism of disulfidptosis in ES remains unclear. Our aim is to explore the disulfidptosis-related prognostic signature in ES.
View Article and Find Full Text PDFNeurotox Res
January 2025
Laboratory of Neurobiology of Aging, Centro Científico y Tecnológico de Excelencia Ciencia & Vida, Fundación Ciencia & Vida, Avenida del Valle Norte 725, Huechuraba, Santiago, 8580702, Chile.
Mitochondria produces energy through oxidative phosphorylation (OXPHOS), maintaining calcium homeostasis, survival/death cell signaling mechanisms, and redox balance. These mitochondrial functions are especially critical for neurons. The hippocampus is crucial for memory formation in the brain, which is a process with high mitochondrial function demand.
View Article and Find Full Text PDFInvest Ophthalmol Vis Sci
January 2025
Department of Ophthalmology, the First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, USTC, Hefei, China.
Purpose: Oxidative phosphorylation (OXPHOS) is an aerobic metabolic mechanism, and its dysfunction plays an important role in the pathological changes of ischemic diseases. However, systematic studies on the occurrence of retinal detachment (RD) are lacking.
Methods: Single-cell RNA sequencing (scRNA-seq) of the human retina was performed to detect the metabolic changes of various retinal cells after RD.
Int J Mol Sci
December 2024
Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia.
Proton-translocating NADH-ubiquinone oxidoreductase (complex I) catalyzes the oxidation of NADH by ubiquinone accompanied by the transmembrane transfer of four protons, thus contributing to the formation of a proton motive force () across the coupling membranes of mitochondria and bacteria, which drives ATP synthesis in oxidative phosphorylation. In recent years, great progress has been achieved in resolving complex I structure by means of X-ray crystallography and high-resolution cryo-electron microscopy, which has led to the formulation of detailed hypotheses concerning the molecular mechanism of coupling of the redox reaction to vectorial proton translocation. To test and probe proposed mechanisms, a comprehensive study of complex I using other methods including molecular dynamics and a variety of biochemical studies such as kinetic and inhibitory analysis is required.
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