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Potential Mechanisms and Effects of Dai Bai Jie Ethanol Extract in Preventing Acute Alcoholic Liver Injury.
Curr Issues Mol Biol
December 2024
State Key Laboratory for Quality Ensurance and Sustainable Use of Dao Di Herbs, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China.
This study investigated the protective effect of Dai Bai Jie (DBJ) extract against acute alcoholic liver injury (AALI) and elucidated its potential mechanism. The total saponin level in the DBJ extracts was measured using vanillin-chloroform acid colorimetry. To observe the preventive and protective effects of DBJ on AML-12 cells in an ethanol environment, the effective components of DBJ were identified.
View Article and Find Full Text PDFPrefrontal 5α-reductase 2 mediates male-specific acute stress response.
Sci Adv
January 2025
Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT, USA.
A key response to acute stress is the increased brain synthesis of the neurosteroid allopregnanolone (AP). Although the rate-limiting step of this reaction is catalyzed by 5α-reductase (5αR), the role of its two primary isoenzymes, 5αR1 and 5αR2, in stress reactivity remains unclear. Here, we found that acute stress led to increased levels of 5αR2, but not 5αR1, in the medial prefrontal cortex (mPFC) of male, but not female, rats.
View Article and Find Full Text PDFLoop engineering of enzymes to control their immobilization and ultimately fabricate more efficient heterogeneous biocatalysts.
Protein Sci
February 2025
Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), San Sebastián, Spain.
Enzyme immobilization is indispensable for enhancing enzyme performance in various industrial applications. Typically, enzymes require specific spatial arrangements for optimal functionality, underscoring the importance of correct orientation. Despite well-known N- or C-terminus tailoring techniques, alternatives for achieving orientation control are limited.
View Article and Find Full Text PDFSelf-sufficient biocatalytic cascade for the continuous synthesis of danshensu in flow.
Appl Microbiol Biotechnol
January 2025
Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland.
A new strategy has been developed to successfully produce the active component danshensu ex vivo. For this purpose, phenylalanine dehydrogenase from Bacillus sphaericus was combined with the novel hydroxyphenylpyruvate reductase from Mentha x piperita, thereby providing an in situ cofactor regeneration throughout the conversion process. The purified enzymes were co-immobilized and subsequently employed in batch biotransformation, resulting in 60% conversion of 10 mM L-dopa within 24 h, with a catalytic amount of NAD as cofactor.
View Article and Find Full Text PDFTranscriptome analysis of liver injury of fatty liver disease induced by ALDH2 deficiency.
Sci Rep
January 2025
Capital Institute of Pediatrics, Beijing, China.
Aldehyde dehydrogenase 2 (Aldh2) Glu504Lys mutation, common in East Asians, is linked to various alcohol-related pathologies, notably fatty liver disease. Recent findings suggest that high ethanol-producing Klebsiella pneumoniae(HiAlc Kpn) exacerbates liver injury in non-alcoholic fatty liver disease (NAFLD). Our study investigated the combined effects of Aldh2 deficiency and HiAlc Kpn on NAFLD liver injury, transcriptome analyses to unearth potential mechanisms and therapeutic targets.
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