Increased inducible nitric oxide synthase (iNOS) expression has been reported in heart failure, cardiomyopathies, and arteriosclerosis. iNOS is expressed in the heart upon inflammatory stimuli and produces excessive amounts of nitric oxide (NO). The overproduction of NO is cytotoxic and involved in cardiovascular diseases. Furthermore, iNOS produces superoxide anion which proceeds with NO to the harmful oxidant peroxynitrite, causing oxidative stress in the heart. The aim of the study was to gain new insights into the role of iNOS in human myocardial infarction (MI) and its contribution to oxidative stress in the heart. Furthermore, we investigated the unaffected myocardium of the infarction hearts, to study if iNOS expression is increased, probably as an indicator for oxidative stress. Our results show a significant increase (p = 0.013) of the iNOS expression in the affected regions of MI hearts (n = 9) in comparison with healthy control hearts (n = 4). In the unaffected regions of MI hearts, an increase in the iNOS expression in some samples was found as well. Our study demonstrated the direct detection of iNOS mRNA in human myocardial tissue. The balance between beneficial and deleterious effects of iNOS may be particularly influenced by the presence or absence of concurrent oxidative stress.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00414-019-02051-y | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Anthocyanins from a new hybrid sweet potato peel cultivated in Northern Thailand mitigate LPS-induced inflammation and RANKL-induced osteoporosis by regulating ROS-mediated pathways.
Inflammopharmacology
January 2025
Division of Biochemistry, School of Medical Sciences, University of Phayao, Phayao, 56000, Thailand.
Maejo 341 Sweet potato (MSP) is a new purple sweet potato variety cultivated in Northern Thailand, but its health benefits are unknown. This study aimed to investigate its antioxidant, anti-inflammatory, and anti-osteoporotic activities, as well as its anthocyanin content. The peel and flesh of MSP were extracted with ethanol and water.
View Article and Find Full Text PDF[Mechanism of chrysophanol in inhibiting ox-LDL-induced macrophage foaminess through NF-κB/HMGB1-PI3K/Akt/mTOR pathway].
Zhongguo Zhong Yao Za Zhi
December 2024
School of Basic Medical Sciences, Guangzhou University of Chinese Medicine Guangzhou 511400, China.
The aim of this study was to investigate the underlying mechanism of chrysophanol(Chr) in reducing inflammation and foam cell formation induced by oxidized low-density lipoprotein(ox-LDL) and to investigate the targets and pathways related to effects of Chr on coronary atherosclerosis, providing a theoretical basis for the development of new clinical drugs. RAW264.7 macrophages were cultured in vitro, and after determining the appropriate concentrations of Chr and ox-LDL for treating RAW264.
View Article and Find Full Text PDFMycoplasma pneumoniae MPN606 induces inflammation by activating MAPK and NF-κB signaling pathways.
Microb Pathog
January 2025
Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang 421001, Hunan, China. Electronic address:
Mycoplasma pneumoniae (M. pneumoniae) is one of the major pathogens causing community-acquired pneumonia (CAP), and its pathogenic mechanism is not fully understood. Inflammatory response is the most basic and common pathological phenomenon of CAP, but the specific mechanism needs further investigation.
View Article and Find Full Text PDFChronic inflammation and heme-iron overload can result from bacterial hemolysis. Along with the synthetic drugs, numerous traditional and functional food approaches are equally trialed to eradicate the problem. As a prospective new source of dietary protein hydrolysates, freshwater mollusks () have recently drawn huge interest from researchers.
View Article and Find Full Text PDFRocaglamide-A mitigates LPS-induced hepatic inflammation by modulating JNK/AP-1 signaling cascade and ROS production in hepatocytes.
Toxicol Res
January 2025
Department of Biochemistry, College of Natural Sciences, Kangwon National University, 24341 Chuncheon, Republic of Korea.
Unlabelled: Lipopolysaccharide (LPS), a gut-derived endotoxin, is a recognized risk factor for both Non-alcoholic fatty liver disease (NAFLD) and alcoholic liver disease (ALD). Rocaglamide-A (Roc-A), a natural compound derived from the genus Aglaia, is known for its pharmacological and immunosuppressive effects on various cell types. Although our recent investigations have unveiled Roc-A's anti-adipogenic role in adipocytes, its mechanism in hepatic inflammation remains elusive.
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!