Mycobacterium sp. strain JC1 was capable of growth on benzylamine as a sole source of carbon and energy. The primary deamination of benzylamine was mediated by an inducible amine oxidase, which can also oxidize tyramine, histamine, and dopamine. Inhibitor study identified this enzyme as a copper-containing amine oxidase sensitive to semicarbazide.
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Front Biosci (Landmark Ed)
January 2025
HUN-REN-SZTE Neuroscience Research Group, Hungarian Research Network, University of Szeged (HUN-REN-SZTE), Danube Neuroscience Research Laboratory, H-6725 Szeged, Hungary.
Backgrounds: Memory and emotion are especially vulnerable to psychiatric disorders such as post-traumatic stress disorder (PTSD), which is linked to disruptions in serotonin (5-HT) metabolism. Over 90% of the 5-HT precursor tryptophan (Trp) is metabolized via the Trp-kynurenine (KYN) metabolic pathway, which generates a variety of bioactive molecules. Dysregulation of KYN metabolism, particularly low levels of kynurenic acid (KYNA), appears to be linked to neuropsychiatric disorders.
View Article and Find Full Text PDFMolecules
January 2025
Department of Chemistry and Biochemistry, University of Colorado, Colorado Springs, CO 80918, USA.
Catalytically active nanomaterials, or nanozymes, have gained significant attention as alternatives to natural enzymes due to their low cost, ease of preparation, and enhanced stability. Because of easy preparation, excellent biocompatibility, and unique optoelectronic properties, gold nanoparticles (AuNPs) have attracted increasing attention in many fields, including nanozymes. In this work, we demonstrated the applicability of beta-cyclodextrin functionalized gold nanoparticles (β-CD-AuNPs) as enzyme mimics for different substances, including TMB and DA.
View Article and Find Full Text PDFGeorgian Med News
November 2024
2Department of Chemistry, College of Science, University of Mosul, Iraq.
Parkinson's disease (PD) is a complicated neurodegenerative disease that is the most prevalent severe movement disorder worldwide. The research includes studying the levels of hydrogen sulphide (H2S) and cystathionine γ-lyase (CSE) with some biochemical parameters in the serum of patients with PD in Mosul City (Iraq), which include Serotonin (SERT), dopamine (DA), sphingomyelin (SM), vitamin B12, Acetylcholine esterase (AChE), monoamine oxidase (MAO), creatine kinase (CK), aspartate aminotransferase (AST), alanine aminotransferase (ALT). Samples reached (100), which included: (40) for the Parkinson's patients group, and (60) for the control group.
View Article and Find Full Text PDFBiosensors (Basel)
January 2025
School of Pharmacy & Biomolecular Sciences, Faculty of Health, Innovation, Technology and Science, Liverpool John Moores University, Liverpool L3 3AF, UK.
G-quadruplex (G4) DNAzymes with peroxidase activities hold potential for applications in biosensing. While these nanozymes are easy to assemble, they are not as efficient as natural peroxidase enzymes. Several approaches are being used to better understand the structural basis of their reaction mechanisms, with a view to designing constructs with improved catalytic activities.
View Article and Find Full Text PDFBMC Pregnancy Childbirth
January 2025
Department of Basic Pharmaceutical Sciences, Division of Biochemistry, Recep Tayyip Erdogan University, Rize, Turkey.
Background: Placental syndrome, mainly composed of preeclampsia and fetal growth restriction, has an impact on the health of mother and baby dyads. While impaired placentation is central to their pathophysiology, the underlying molecular mechanisms remain incompletely understood. This study investigates the association between placental syndrome and metabolic alterations in 1-deoxysphingolipids (1-deoxySLs) and polyamines, along with their regulatory enzymes.
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