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Introduction: Metabolic processes play a role in cancer development, with faecal amino acids emerging as potential biomarkers for colorectal neoplasia. While fresh frozen tissue is preferred for metabolomic analysis, formalin-fixed paraffin-embedded (FFPE) tissue is more widely available.
Objectives: We aimed to evaluate amino acid profiles in FFPE tissue across different stages of the adenoma-carcinoma sequence.
Method: A panel of 20 amino acids was measured using liquid chromatography-tandem mass spectrometry.
Results: Fourteen amino acids were detected, with proline elevated in colorectal carcinoma versus advanced (FC 2.33, p = 0.04) and non-advanced adenomas (FC 2.42, p = 0.02).
Conclusion: Despite analytical challenges, amino acid profiling in FFPE tissue is feasible.
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http://dx.doi.org/10.1007/s11306-025-02301-8 | DOI Listing |
Mitochondrial DNA A DNA Mapp Seq Anal
September 2025
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China.
Hibernation is an elaborate response strategy employed by numerous mammals to survive in cold conditions that involves active suppression of metabolism. Despite the role of mitochondria as energy metabolism centers during hibernation, the adaptive and evolutionary mechanisms of mitochondrial genes in hibernating animals, like hedgehogs in eulipotyphlan species, are not yet fully understood. In this study, we sequenced and assembled mitochondrial genomes of the hibernating four-toed hedgehog () and the non-hibernating Asian house shrew ().
View Article and Find Full Text PDFCirc Genom Precis Med
September 2025
Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, London, United Kingdom (W.J.Y., M.M.S., J.R., S.v.D., H.R.W., A.T., P.B.M.).
Background: There is a higher prevalence of heart rate corrected QT (QTc) prolongation in patients with diabetes and metabolic syndrome. QT interval genome-wide association studies have identified candidate genes for cardiac energy metabolism, and experimental studies suggest that polyunsaturated fatty acids have direct effects on ion channel function. Despite this, there has been limited study of metabolite concentration relationships with QT intervals.
View Article and Find Full Text PDFGenes Brain Behav
October 2025
Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
Major depressive disorder is a prevalent and debilitating psychiatric illness that produces significant disability. Clinical data suggest that the pathophysiology of depression is due, in part, to a dysregulation of inflammation and glutamate levels in the brain. The systemic administration of lipopolysaccharide (LPS) has been shown to induce depressive-like behaviors in mice.
View Article and Find Full Text PDFChembiochem
September 2025
Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan.
Jasmonates are plant hormones that regulate plant defense and development. 7-iso-Jasmonoyl-l-isoleucine (JA-Ile) is a representative active jasmonate which is biosynthesized from 7-iso-jasmonic acid (JA) by the jasmonoyl-amido synthases JASMONATE RESISTANT 1 (JAR1) and AtGH3.10 in Arabidopsis thaliana.
View Article and Find Full Text PDFChembiochem
September 2025
Faculty of Biology and Biotechnology, Microbial Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, Bochum, 44780, Germany.
The N-hydroxylating monooxygenase (NMO) TheA from Thermocrispum agreste catalyzes the N-hydroxylation step of l-ornithine, which is the first step in the thermochelin siderophore biosynthesis. Characterization of this enzyme revealed a significant thermostability up to 50 °C and activity with the non-native substrate d-ornithine with kinetic parameters (K = 4.06 ± 0.
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