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The functional connotations of iron deficiency-effect on neutrophil oxidative burst activity in preschool children.
Am J Blood Res
December 2024
Department of Pathology, University College of Medical Sciences and Guru Teg Bahadur Hospital Delhi, India.
Unlabelled: Iron deficiency anaemia (IDA) makes an individual prone to bacterial infections. The antimicrobial defence mechanism of neutrophils is orchestrated by Nicotinamide Adenine Dinucleotide Phosphate Hydrogen (NADPH) oxidative burst which is iron-dependent. The few previous studies documenting a decrease in neutrophil oxidative burst in iron-deficient children have been based mainly on the Nitro blue tetrazolium test (NBT).
View Article and Find Full Text PDFGap junction intercellular communications regulates activation of SARM1 and protects against axonal degeneration.
Cell Death Dis
January 2025
State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
Sterile alpha and Toll/interleukin-1 receptor motif containing 1 (SARM1), a nicotinamide adenine dinucleotide (NAD)-utilizing enzyme, mediates axon degeneration (AxD) in various neurodegenerative diseases. It is activated by nicotinamide mononucleotide (NMN) to produce a calcium messenger, cyclic ADP-ribose (cADPR). This activity is blocked by elevated NAD level.
View Article and Find Full Text PDFNicotinamide adenine dinucleotide (NAD(H)) and its metabolites function as crucial regulators of physiological processes, allowing cells to adapt to environmental changes such as nutritional deficiencies, genotoxic factors, disruptions in circadian rhythms, infections, inflammation, and exogenous substances. Here, we investigated whether elevated NAD(H) levels in oocytes enhance their quality and improve developmental competence following in vitro fertilization (IVF). Bovine cumulus-oocyte complexes (COCs) were matured in a culture medium supplemented with 0-100 μM nicotinamide mononucleotide (NMN), a precursor of NAD(H).
View Article and Find Full Text PDFA handheld biofluorometric system for acetone detection in exhaled breath condensates.
Analyst
January 2025
Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan.
As a marker of human metabolism, acetone is important for lipid metabolism monitoring and early detection of diabetes. In this study, we developed a handheld biosensor for acetone based on fluorescence detection by utilizing the enzymatic reaction of secondary alcohol dehydrogenase (S-ADH) with β-nicotinamide adenine dinucleotide (NADH, = 340 nm, = 490 nm). In the reaction, NADH is oxidized when acetone is reduced to 2-propanol by S-ADH, and the acetone concentration can be measured by detecting the amount of NADH consumed in this reaction.
View Article and Find Full Text PDFFast autofluorescence imaging to evaluate dynamic changes in cell metabolism.
J Biomed Opt
December 2024
Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States.
Significance: Cellular metabolic dynamics can occur within milliseconds, yet there are no optimal tools to spatially and temporally capture these events. Autofluorescence imaging can provide metabolic information on the cellular level due to the intrinsic fluorescence of reduced nicotinamide adenine dinucleotide (phosphate) [NAD(P)H] and flavin adenine dinucleotide (FAD).
Aim: Our goal is to build and evaluate a widefield microscope optimized for rapid autofluorescence imaging of metabolic changes in cells.
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