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Investigation into the effect of phenylalanine gating on anaerobic haem breakdown using the energy landscape approach.
Protein Sci
February 2025
Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
We have recently demonstrated a novel anaerobic NADH-dependent haem breakdown reaction, which is carried out by a range of haemoproteins. The Yersinia enterocolitica protein, HemS, is the focus of further research presented in the current paper. Using conventional experimental methods, bioinformatics, and energy landscape theory (ELT), we provide new insight into the mechanism of the novel breakdown process.
View Article and Find Full Text PDFType 2 diabetes: a sacrifice program handling energy surplus.
Life Metab
December 2024
Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China.
Type 2 diabetes mellitus (T2DM) is closely associated with obesity, while interactions between the two diseases remain to be fully elucidated. To this point, we offer this perspective to introduce a set of new insights into the interpretation of T2DM spanning the etiology, pathogenesis, and treatment approaches. These include a definition of T2DM as an energy surplus-induced diabetes characterized by the gradual decline of β cell insulin secretion function, which ultimately aims to prevent the onset of severe obesity through mechanisms of weight loss.
View Article and Find Full Text PDFDecrease of NAD Inhibits the Apoptosis of OLP T Cells via Inducing Mitochondrial Fission.
J Inflamm Res
January 2025
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China.
Purpose: Oral lichen planus (OLP) is a chronic, immune-mediated inflammatory disease involving T cells. Mitochondrial fission plays a crucial role in T cell fate through structural remodeling. Nicotinamide adenine dinucleotide (NAD) regulates mitochondrial remodeling and function.
View Article and Find Full Text PDFNAD World 3.0: the importance of the NMN transporter and eNAMPT in mammalian aging and longevity control.
NPJ Aging
January 2025
Department of Developmental Biology, Department of Medicine (Joint), Washington University School of Medicine, St. Louis, Missouri, USA.
Over the past five years, systemic NAD (nicotinamide adenine dinucleotide) decline has been accepted to be a key driving force of aging in the field of aging research. The original version of the NAD World concept was proposed in 2009, providing an integrated view of the NAD-centric, systemic regulatory network for mammalian aging and longevity control. The reformulated version of the concept, the NAD World 2.
View Article and Find Full Text PDFCognitive Impairment in Psychotic Disorders Is Associated with Brain Reductive Stress and Impaired Energy Metabolism as Measured by 31P Magnetic Resonance Spectroscopy.
Schizophr Bull
January 2025
Psychotic Disorders Division, McLean Hospital, Belmont, MA, United States.
Background And Hypothesis: Convergent evidence shows the presence of brain metabolic abnormalities in psychotic disorders. This study examined brain reductive stress and energy metabolism in people with psychotic disorders with impaired or average range cognition. We hypothesized that global cognitive impairment would be associated with greater brain metabolic dysregulation.
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