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Background: TAR-DNA-binding protein 43 (TDP43), is a pathologic marker in neurodegenerative diseases including frontotemporal lobar degeneration and amyotrophic lateral sclerosis. The aggregation of TDP-43, a crucial RNA-binding protein, is a consequence of post-translational modifications (PTMs) that disrupt its normal function. PTMs such as phosphorylation and ubiquitination contribute to the aberrant accumulation of TDP-43 aggregates, leading to neurodegenerative disorders like amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD).
View Article and Find Full Text PDFHepatic metabolism and ketone production in metabolic dysfunction-associated steatotic liver disease.
Curr Opin Gastroenterol
January 2025
Department of Nutrition Sciences.
Purpose Of Review: Metabolic dysfunction-associated steatotic liver disease (MASLD) is present in 25-35% of individuals in the United States. The purpose of this review is to provide the contextual framework for hepatic ketogenesis in MASLD and to spotlight recent advances that have improved our understanding of the mechanisms that drive its development and progression.
Recent Findings: Traditionally, hepatic ketogenesis has only been considered metabolically during prolonged fasting/starvation or with carbohydrate deplete ketogenic diets where ketones provide important alternative energy sources.
Reduced lipid and glucose oxidation and reduced lipid synthesis in AMPKα2 myotubes.
Arch Physiol Biochem
January 2025
Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, Norway.
Adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) plays a crucial role in regulation of metabolic homeostasis. To understand the role of the catalytic α2 subunit of AMPK in skeletal muscle energy metabolism, myotube cultures were established from and mice. Myotubes from mice had lower basal oleic acid and glucose oxidation compared to myotubes from mice.
View Article and Find Full Text PDFHyperbaric oxygen therapy attenuates brain radiation-induced cognitive deficits in rats.
Int J Med Sci
January 2025
Department of Emergency Medicine, Chi Mei Medical Center, Tainan, Taiwan.
Effective therapies for cognitive impairments induced by brain irradiation are currently lacking. This study investigated the therapeutic potential of hyperbaric oxygen therapy (HBOT) for radiation-induced brain injury in a randomized controlled experimental model using adult male Wistar rats. Adult male Wistar rats were divided into four experimental groups: 0 Gy whole brain radiotherapy (WBRT) with normal baric air (NBA) treatment, 0 Gy WBRT with HBOT, 10 Gy WBRT with NBA, and 10 Gy WBRT with HBOT.
View Article and Find Full Text PDFMitochondrial SIRT2-mediated CPT2 deacetylation prevents diabetic cardiomyopathy by impeding cardiac fatty acid oxidation.
Int J Biol Sci
January 2025
Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Dysregulated energy metabolism, particularly lipid metabolism disorders, has been identified as a key factor in the development of diabetic cardiomyopathy (DCM). Sirtuin 2 (SIRT2) is a deacetylase involved in the regulation of metabolism and cellular energy homeostasis, yet its role in the progression of DCM remains unclear. We observed significantly reduced SIRT2 expression in DCM model mice.
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