ArticleCardiology journal2024
Endoplasmic reticulum stress and expression of nitric oxide synthases in heart failure with preserved and with reduced ejection fraction - pilot study.
Article in Cardiology journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- SGPP2 Ameliorates Chronic Heart Failure by Attenuating ERS via the SIRT1/AMPK Pathway.Current issues in molecular biology · 2026Article
- Cardiometabolic heart failure with preserved ejection fraction: from molecular signatures to personalized treatment.Cardiovascular diabetology · 2025Review
- Is Inducible Nitric Oxide Synthase (iNOS) Promising as a New Target Against Pulmonary Hypertension?Antioxidants (Basel, Switzerland) · 2025Review
- Insulin-like growth factor 1 (IGF-1)-induced changes in cardiac inducible nitric oxide synthase (iNOS) in obese rats.Frontiers in endocrinology · 2025Article
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7 authors.
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Abstract
backgroundUnfolded Protein Response (UPR), endoplasmic reticulum (ER) stress, and inducible nitric oxide synthase (iNOS) overexpression have been found to influence heart failure with preserved ejection fraction (HFpEF) pathogenesis. Their importance in heart failure with reduced ejection fraction (HFrEF) is not entirely established; there is little data involving a detailed comparison between HFpEF and HFrEF from this perspective. This pilot study aimed to compare circulating levels of Glucose-regulated protein 78kDa (GRP78) (ER - stress marker) and all NOS isoforms between both HFpEF and HFrEF and to analyze the correlation between these markers and the clinical characteristics of the patients.
methodsForty-two patients with HFpEF and thirty-eight with HFrEF were involved in this study. Clinical characteristics and echocardiographic data were obtained. Basic laboratory tests were performed and ELISA tests for iNOS, endothelial NOS (eNOS), neuronal NOS (nNOS), and GRP78.
resultsPatients with HFpEF had lower circulating levels of GRP78 and higher iNOS concentrations when compared to HFrEF patients (P = 0.023, P < 0.0001, accordingly). The subgroup of the HFpEF population with eGFR < 60 mL/min/1.73m2 had higher nNOS and eNOS levels than HFpEF patients with normal GFR (P = 0.049, P = 0.035, respectively). In the HFrEF subgroup, patients with coexistent diabetes mellitus had elevated concentrations of nNOS compared to the subpopulation without diabetes mellitus (P = 0.041). There was a positive correlation between eNOS and nNOS concentrations (ρ = 0.86, P < 0.0001).
conclusionsIn HFpEF, there is a more intensified iNOS overexpression, while in HFrEF, ER stress is more prominent.
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