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Phosphoproteomics for studying signaling pathways evoked by hormones of the renin-angiotensin system: A source of untapped potential.
Acta Physiol (Oxf)
February 2025
Department of Molecular Medicine, Cardiovascular and Renal Research Unit, University of Southern Denmark, Odense M, Denmark.
The Renin-Angiotensin System (RAS) is a complex neuroendocrine system consisting of a single precursor protein, angiotensinogen (AGT), which is processed into various peptide hormones, including the angiotensins [Ang I, Ang II, Ang III, Ang IV, Ang-(1-9), Ang-(1-7), Ang-(1-5), etc] and Alamandine-related peptides [Ang A, Alamandine, Ala-(1-5)], through intricate enzymatic pathways. Functionally, the RAS is divided into two axes with opposing effects: the classical axis, primarily consisting of Ang II acting through the AT receptor (ATR), and in contrast the protective axis, which includes the receptors Mas, ATR and MrgD and their respective ligands. A key area of RAS research is to gain a better understanding how signaling cascades elicited by these receptors lead to either "classical" or "protective" effects, as imbalances between the two axes can contribute to disease.
View Article and Find Full Text PDFDysregulated autoantibodies targeting AGTR1 are associated with the accumulation of COVID-19 symptoms.
NPJ Syst Biol Appl
January 2025
BIH Center for Regenerative Therapies (BCRT), Julius Wolff Institute (JWI), and Berlin Institute of Health (BIH); all Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), 10117, Berlin, Germany.
Coronavirus disease 2019 (COVID-19) presents a wide spectrum of symptoms, the causes of which remain poorly understood. This study explored the associations between autoantibodies (AABs), particularly those targeting G protein-coupled receptors (GPCRs) and renin‒angiotensin system (RAS) molecules, and the clinical manifestations of COVID-19. Using a cross-sectional analysis of 244 individuals, we applied multivariate analysis of variance, principal component analysis, and multinomial regression to examine the relationships between AAB levels and key symptoms.
View Article and Find Full Text PDFUrinary Proteome Characterization of Stroke-Prone Spontaneously Hypertensive Rats.
Int J Mol Sci
December 2024
Department of Biochemistry and Molecular Biology, Gene Engineering Drug and Biotechnology Beijing Key Laboratory, Beijing Normal University, Beijing 100875, China.
Hypertension is a multifactorial and complex disease influenced by genetic and environmental factors, and it has become one of the most serious public health challenges. This study aimed to investigate the changes in hypertension based on urinary proteome. The stroke-prone spontaneously hypertensive rats (SHRSPs) model was used to examined urinary proteome changes during the development of hypertension.
View Article and Find Full Text PDFVasculo-Protective Effects of Standardized Black Chokeberry Extracts in Mice Aorta.
Int J Mol Sci
December 2024
Department III Functional Sciences-Pathophysiology, Faculty of Medicine, "Victor Babeș" University of Medicine and Pharmacy of Timișoara, E. Murgu Sq., No. 2, 300041 Timisoara, Romania.
Black chokeberry (
Impact of hyperkalaemia on renin-angiotensin-aldosterone (RAAS) inhibitor reduction or withdrawal following hospitalisation.
Clin Exp Med
December 2024
Department of Medicine, King's College Hospital NHS Foundation Trust, London, UK.
Background: Inhibitors of the renin-angiotensin-aldosterone system (RAAS), such as ACE inhibitors (ACEi), angiotensin-II receptor blockers and mineralocorticoid receptor antagonists, reduce morbidity and mortality in hypertension, congestive heart failure and chronic kidney disease. However, their use can lead to hyperkalaemia. We examined the proportions of RAAS inhibitor (RAASi) reduction or withdrawal, across GFR strata, following hospitalisation and the effect on patient mortality.
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