Background And Aim: Patients with dysplasia in Barrett's esophagus (BE) have a considerable risk of developing esophageal adenocarcinoma (EAC). The mucosal expression of the pro-inflammatory angiotensin II receptor type 1 (AT1R) is elevated in these patients, suggesting a role in carcinogenesis. The purpose of this study was to determine whether interference with the renin-angiotensin system (RAS) would influence downstream markers of carcinogenesis.
Methods: Endoscopic mucosal biopsies from BE patients with low-grade dysplasia (LGD) were sampled before and after a three-week period of RAS-interfering treatment. Thirty patients were randomly allocated to enalapril (ACE inhibitor, 5 mg od), candesartan (AT1R antagonist, 8 mg od), or no drug. The expression of 12 proteins known to be associated with RAS and carcinogenesis was assessed using western blot.
Results: We found altered expression of several proteins after enalapril treatment (decreased: NFκB, p = .043; NLRP3, p = .050; AMACR, p = .017; and caspase 3, p = .025; increased: p53, p = .050). Candesartan treatment was associated with increased iNOS expression (p = .033). No significant changes were seen in the no-drug group.
Conclusion: Interference with angiotensin II formation was associated with altered expression of inflammation- and carcinogenesis-related proteins. The present results speak in favor of involvement of angiotensin II in BE dysplasia, but the role of AT1R should be investigated further.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/00365521.2016.1256423 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
VEGFR3 mitigates hypertensive nephropathy by enhancing mitophagy via regulating crotonylation of HSPA1L.
Cell Commun Signal
January 2025
Department of Cardiology, the 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.
Oxidative stress-associated proximal tubular cells (PTCs) damage is an important pathogenesis of hypertensive renal injury. We previously reported the protective effect of VEGFR3 in salt-sensitive hypertension. However, the specific mechanism underlying the role of VEGFR3 in kidney during the overactivation of the renin-angiotensin-aldosterone system remains unclear.
View Article and Find Full Text PDFHypertensive load predicts recovery of renal function for patients undergoing revascularisation for renal artery stenosis.
Sci Rep
January 2025
School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow, UK.
Renal ischaemia due to renal artery stenosis produces two differing responses - a juxtaglomerular hypertensive response and cortical renal dysfunction. The reversibility of renal impairment is not predictable, and thus renal revascularisation is controversial. This study aims to test the hypothesis that the hypertensive response to renal ischaemia reflects viable renal parenchyma, and thus could be used to predict the recovery in renal function.
View Article and Find Full Text PDFDecreased nitric oxide production is a novel therapeutic target for salt-induced nocturnal polyuria in aging.
Sci Rep
January 2025
Department of Urology, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-city, 565-0871, Osaka, Japan.
Nocturnal polyuria is a major cause of nocturia, which affects quality of life. Aging-related decreases in nitric oxide production have been reported to contribute to salt-induced nocturnal polyuria. We posited that enhanced nitric oxide production from exercise could mitigate salt-induced nocturnal polyuria.
View Article and Find Full Text PDFThe GLP-1 Agonist Semaglutide Ameliorates Cognitive Regression in P301S Tauopathy Mice Model via Autophagy/ACE2/SIRT1/FOXO1-Mediated Microglia Polarization.
Eur J Pharmacol
January 2025
Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt.
Tau hyper-phosphorylation has been recognized as an essential contributor to neurodegeneration in Alzheimer's disease (AD) and related tauopathies. In the last decade, tau hyper-phosphorylation has gained considerable concern in AD therapeutic development. Tauopathies are manifested with a broad spectrum of symptoms, from dementia to cognitive decline and motor impairments.
View Article and Find Full Text PDFManagement of renin-angiotensin system inhibitors prior to major surgery: insights from the STOP-or-NOT trial.
Br J Anaesth
December 2024
INI-CRCT Network, Nancy, France; Université Paris Cité, AP-HP, Hôpital Lariboisière, DMU PARABOL, Service d'Anesthésie-réanimation-CTB, Paris, France; UMR-942 "MASCOT", Inserm, Paris, France.
Strong recommendations on how to manage renin-angiotensin system inhibitors, including angiotensin-converting enzyme inhibitors and angiotensin receptor blockers, before surgery are lacking because of a lack of evidence, which is mostly limited to data from observational studies. The STOP-or-NOT trial was a large multicentre randomised trial designed to determine whether chronic renin-angiotensin system inhibitors should be continued or discontinued before major noncardiac surgery. As principal investigators of the STOP-or-NOT trial, we discuss the trial's results and how they contribute to the existing literature on management of renin-angiotensin system inhibitors before surgery.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!