Free oxygen radicals contribute to gastric mucosal damage induced by acetylic-salicylic acid (ASA). Vitamin C has been shown to reduce gastric toxicity of ASA in humans. We intended to assess the role of heme oxygenase-1 (HO-1) in this process by application of these substances to AGS and KATO III cells. HO-1 expression was monitored by real-time RT-PCR, Western blot, and HO activity measurement. HO-1 mRNA was significantly elevated by either ASA or vitamin C in gastric epithelial cells, combination of both substances further increased expression. HO-1 protein and enzyme activity rose in cells exposed to vitamin C alone or combined with ASA, but not after stimulation with ASA alone. In contrast to endothelia, in which ASA simultaneously induces HO-1 mRNA and protein expression, gastric epithelial cells require vitamin C to translate HO-1 mRNA into active protein, which then may exert gastroprotection by its antioxidant and vasodilative properties.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bbrc.2003.10.146 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Gossypin Ameliorates Collagen-Induced Arthritic Rats by Inhibiting Angiogenesis, Inflammation and Oxidative Stress.
Basic Clin Pharmacol Toxicol
February 2025
Department of Pharmacology, Venkateshwara College of Pharmacy, Meerut, India.
Background: Rheumatoid arthritis (RA) is a long-term inflammatory autoimmune disease that damages cartilage and synovial membranes while also affecting bones and joints. The aim of the current study was to investigate the antiarthritic effect of gossypin against collagen-induced arthritis (CIA) in rats.
Methods: Intraperitoneal administration of Type II collagen (2 mg/mL) was used to induce arthritis in the rats, followed by oral administration of gossypin (5, 10 and 15 mg/kg) for 28 days.
Methyltransferase-like 3 mediates m6A modification of heme oxygenase 1 mRNA to induce ferroptosis of renal tubular epithelial cells in acute kidney injury.
Free Radic Biol Med
January 2025
Traditional Chinese Medicine Integrated Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China; Research Institute of Nephrology, Zhengzhou University, Zhengzhou, Henan province, China; Henan Province Research Center for Kidney Disease, Zhengzhou, Henan Province, China; Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, Zhengzhou, Henan Province, China; Tianjian Laboratory of Advanced Biomedical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China; Innovation Center of Basic Research for Metabolic-Associated Fatty Liver Disease, Ministry of Education of China, Zhengzhou, Henan Province, China. Electronic address:
Acute kidney injury (AKI) involves a series of syndromes characterized by a rapid increase in creatinine levels. Ferroptosis, as an iron-dependent mode of programmed cell death, reportedly participates in the pathogenesis of AKI. Methyltransferase-like 3 (METTL3)-mediated m6A modification has been recently associated with various kidney diseases; however, the mechanism of METTL3 crosstalk with the molecules involved in ferroptosis is not clearly understood.
View Article and Find Full Text PDFmiRNA-541-5p regulates myocardial ischemia-reperfusion injury by targeting ferroptosis.
J Cardiothorac Surg
January 2025
The First Hospital of Lanzhou University, Lanzhou, China.
Background: This article aims to use high-throughput sequencing to identify miRNAs associated with ferroptosis in myocardial ischemia-reperfusion injury, select a target miRNA, and investigate its role in H9C2 cells hypoxia-reoxygenation injury.
Methods: SD rats and H9C2 cells were used as subjects. ELISA kits quantified MDA, SOD, GSH, LDH, and ferritin levels.
The mechanism of Se in regulating the proliferation and apoptosis of sheep Leydig cells through the miR-200a/NRF2 pathway.
Theriogenology
January 2025
College of Animal Science, Shanxi Agricultural University, Taigu, 030801, PR China; Laboratory of Animal Reproductive Biotechnology, Shanxi Agricultural University, Taigu, 030801, PR China. Electronic address:
This study aimed to investigate the mechanism by which Se in regulates the proliferation and apoptosis of sheep Leydig cells via the miR-200a/NRF pathway. The cells were isolated and purified from the testes of 8-month-old sheep via a Percoll density gradient. After the cells were treated with different concentrations of Se (0, 2.
View Article and Find Full Text PDF[Bioinformatics and animal experiments reveal mechanism of Linggui Zhugan Decoction in ameliorating chronic heart failure after myocardial infarction via HIF-1α/HO-1 signaling pathway].
Zhongguo Zhong Yao Za Zhi
December 2024
School of Integrated Chinese Medicine and Western Medicine, Anhui University of Chinese Medicine Hefei 230012, China Anhui Province Key Laboratory of Chinese Medicinal Formula Hefei 230012, China.
This study aims to investigate the effect of Linggui Zhugan Decoction(LGZGD) on autophagy in the mouse model of chronic heart failure(CHF) induced by myocardial infarction(MI), as well as the regulatory effect of LGZGD on the hypoxia-inducible factor-1α(HIF-1α)/heme oxygenase-1(HO-1) signaling pathway, based on bioinformatics and animal experiments. The active ingredients and corresponding targets of LGZGD were retrieved from the Traditional Chinese Medicine Systems Pharmacology and Analysis Database, and GEO, GeneCards, and DisGeNET were searched for the disease targets. Cytoscape was used to establish a "drug-component-target" network.
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!