Energy production for the maintenance of brain function fails rapidly with the onset of ischemia and is reinstituted with timely reperfusion. The key bioenergetic organelle, the mitochondrion, is strongly affected by a cascade of events occurring with ischemia and reperfusion. Enhanced production of reactive oxygen species, disruption of calcium homeostasis, and an inflammatory response are induced by reperfusion and have a profound effect on cellular bioenergetics in reversible stroke. The impact of perturbed bioenergetics on cellular homeostasis/function during and after ischemia are discussed. Because mitochondrial function can be compromised by derangements at more than one of the susceptible sites on this organelle, we propose that a combination therapy is needed for the restoration and maintenance of cellular bioenergetics after reperfusion.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1212/WNL.0b013e3182695a14 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Deciphering the impact of NOS-derived NO on nitrogen metabolism and carbon flux in the heterocytous cyanobacterium Aphanizomenon flos-aquae 2012/KM1/D3.
Plant Physiol Biochem
January 2025
Laboratory of Microbial Genetics, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India. Electronic address:
Nitric oxide synthases (NOSs) are heme-based monooxygenases that catalyze the NADPH-dependent oxidation of L-arginine to produce NO and L-citrulline. Over the past five years, the identification and characterization of NOS homologs in cyanobacteria have significantly advanced our understanding of these enzymes. However, the precise mechanisms through which NOS-derived NO influences nitrogen metabolism remain incompletely elucidated.
View Article and Find Full Text PDFThe ligninolytic catalytic network reveals the importance of auxiliary enzymes in lignin biocatalysts.
Proc Natl Acad Sci U S A
January 2025
Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China.
Lignin degradation by biocatalysts is a key strategy to develop a plant-based sustainable carbon economy and thus alleviate global climate change. This process involves synergy between ligninases and auxiliary enzymes. However, auxiliary enzymes within secretomes, which are composed of thousands of enzymes, remain enigmatic, although several ligninolytic enzymes have been well characterized.
View Article and Find Full Text PDFLipid-induced condensate formation from the Alzheimer's Aβ peptide triggers amyloid aggregation.
Proc Natl Acad Sci U S A
January 2025
Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Cambridge CB2 1EW, United Kingdom.
The onset and development of Alzheimer's disease is linked to the accumulation of pathological aggregates formed from the normally monomeric amyloid-β peptide within the central nervous system. These Aβ aggregates are increasingly successfully targeted with clinical therapies at later stages of the disease, but the fundamental molecular steps in early stage disease that trigger the initial nucleation event leading to the conversion of monomeric Aβ peptide into pathological aggregates remain unknown. Here, we show that the Aβ peptide can form biomolecular condensates on lipid bilayers both in molecular assays and in living cells.
View Article and Find Full Text PDFA tough soft-hard interface in the human knee joint driven by multiscale toughening mechanisms.
Proc Natl Acad Sci U S A
January 2025
Department of Sports Medicine of the Second Affiliated Hospital, and Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou 311113, China.
Joining heterogeneous materials in engineered structures remains a significant challenge due to stress concentration at interfaces, which often leads to unexpected failures. Investigating the complex, multiscale-graded structures found in animal tissue provides valuable insights that can help address this challenge. The human meniscus root-bone interface is an exemplary model, renowned for its exceptional fatigue resistance, toughness, and interfacial adhesion properties throughout its lifespan.
View Article and Find Full Text PDFProtocol for real-time assessment of energy metabolism in dissociated mouse retinal photoreceptors using a SeahorseXFe24 analyzer.
STAR Protoc
January 2025
Department of Ophthalmology and Ross Eye Institute, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA. Electronic address:
Defects in retinal metabolism have been linked to the onset and progression of various retinal diseases. Herein, we provide a protocol for measuring bioenergetics in dissociated mouse retinal photoreceptors. We outline detailed instructions for obtaining morphologically intact and viable photoreceptor cells from adult mice and preparing the cells for metabolic analysis using a SeahorseXFe24 analyzer.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!