https://transhumanist.ru/index.php?action=history&feed=atom&title=PLA2G4B 2026-04-13T06:23:14Z История изменений этой страницы в вики MediaWiki 1.43.6 https://transhumanist.ru/index.php?title=PLA2G4B&diff=4766&oldid=prev 2021-04-29T19:33:59Z

<p>Новая страница: «Cytosolic phospholipase A2 beta (EC 3.1.1.4) (cPLA2-beta) (Lysophospholipase A1 group IVB) (EC 3.1.1.5) (Phospholipase A2 group IVB) ==Publications== {{medline-...»</p> <p><b>Новая страница</b></p><div>Cytosolic phospholipase A2 beta (EC 3.1.1.4) (cPLA2-beta) (Lysophospholipase A1 group IVB) (EC 3.1.1.5) (Phospholipase A2 group IVB)<br /> <br /> ==Publications==<br /> <br /> {{medline-entry<br /> |title=Monocytes present age-related changes in phospholipid concentration and decreased energy metabolism.<br /> |pubmed-url=https://pubmed.ncbi.nlm.nih.gov/32107839<br /> |abstract=Age-related changes at the cellular level include the dysregulation of metabolic and signaling pathways. Analyses of blood leukocytes have revealed a set of alterations that collectively lower their ability to fight infections and resolve inflammation later in life. We studied the transcriptomic, epigenetic, and metabolomic profiles of monocytes extracted from younger adults and individuals over the age of 65 years to map major age-dependent changes in their cellular physiology. We found that the monocytes from older persons displayed a decrease in the expression of ribosomal and mitochondrial protein genes and exhibited hypomethylation at the HLA class I locus. Additionally, we found elevated gene expression associated with cell motility, including the [[CX3CR1]] and [[ARID5B]] genes, which have been associated with the development of atherosclerosis. Furthermore, the downregulation of two genes, [[PLA2G4B]] and [[ALOX15B]], which belong to the arachidonic acid metabolism pathway involved in phosphatidylcholine conversion to anti-inflammatory lipoxins, correlated with increased phosphatidylcholine content in monocytes from older individuals. We found age-related changes in monocyte metabolic fitness, including reduced mitochondrial function and increased glycose consumption without the capacity to upregulate it during increased metabolic needs, and signs of increased oxidative stress and DNA damage. In conclusion, our results complement existing findings and elucidate the metabolic alterations that occur in monocytes during aging.<br /> <br /> |keywords=* DNA methylation<br /> * aging<br /> * glucose metabolism<br /> * monocytes<br /> * phosphatidylcholines<br /> * transcriptome<br /> |full-text-url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7189998<br /> }}</div>

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