Interplay Between Metabolism, Oxidative Stress, and Cellular Signaling in Health and Disease

A special issue of Metabolites (ISSN 2218-1989). This special issue belongs to the section "Lipid Metabolism".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 1371

Special Issue Editors


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Guest Editor
Department for the Promotion of Human Science and Quality of Life, San Raffaele Open University, 00166 Rome, Italy
Interests: biochemistry; tumor metabolism; lipid metabolism

Special Issue Information

Dear Colleagues,

The close relationship between metabolism, oxidative stress, and cellular signaling has been widely demonstrated in the literature. ROS produced during oxidative metabolism by the mitochondria act as secondary messengers. Based on this, the main mitochondrial fuels also act as regulators of cellular signaling through the production of ROS, as well as catabolites. From this perspective, lipids, necessarily catabolized into mitochondria, are crucial in regulating ROS production and contribute to activating downstream responses, including transcriptional factor activation (e.g., the PPAR family) and DNA damage promotion. Consequently, the cell's antioxidant resources also fall into this type of relationship, regulating intracellular ROS levels and buffering oxidative stress. This means that the signaling generated by the activation of certain pathways can be different depending on the cell type. Moreover, knowing the type of response that is determined in a given system can be of fundamental importance from the perspective of treatment, for example, in the case of tumors. Several cancer treatments induce ROS production in order to exceed the tolerance threshold and determine tumoral cell death. Therefore, in this Special Issue, the interplay between metabolism, oxidative stress, and cellular signaling will be considered from different perspectives, taking into account both health and disease conditions.

Dr. Serena Castelli
Dr. Laura Mosca
Guest Editors

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Keywords

  • oxidative stress
  • metabolism
  • cellular signaling
  • lipid metabolism
  • ROS

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Published Papers (2 papers)

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Research

16 pages, 1423 KiB  
Article
Measurement of Oxidative Stress Index in 102 Patients with Peyronie’s Disease
by Gianni Paulis, Andrea Paulis, Giovanni De Giorgio and Salvatore Quattrocchi
Metabolites 2025, 15(8), 503; https://doi.org/10.3390/metabo15080503 - 29 Jul 2025
Viewed by 325
Abstract
Background: Peyronie’s disease (PD) is a chronic inflammatory condition that affects the penile albuginea. Oxidative stress (OS) plays a crucial role in the development of the disease, prompting us to investigate OS levels at the site of the disease and in peripheral [...] Read more.
Background: Peyronie’s disease (PD) is a chronic inflammatory condition that affects the penile albuginea. Oxidative stress (OS) plays a crucial role in the development of the disease, prompting us to investigate OS levels at the site of the disease and in peripheral blood. This article presents our second study in which the OS was evaluated by calculating the OS index (OSI) in blood samples taken directly from the penile corpora cavernosa of patients with PD. Our innovative diagnostic method, which focuses on the analysis of oxidative stress (OS) in the corpora cavernosa of the penis, allows us to accurately identify the “chemical” signals (OS levels) of the pathology in the area where it is present. Methods: Our study included 102 PD patients from our Peyronie’s care center and 100 control cases. To conduct a comprehensive OS analysis, we measured both the total oxidant status (TOS) and total antioxidant status (TAS) and calculated the oxidative stress index (OSI) as OSI = TOS/TAS × 100. Blood samples were collected from the penis and a vein in the upper extremity, and OS was measured using d-ROMs and PATs (FRAS kit). Results: Pearson’s analyses revealed a significant statistical correlation between penile OSI values and PD plaque volumes (p = 0.003), while no correlation was found between systemic OSI values and plaque volumes (p = 0.356). Penile OSI values decreased significantly after PD plaque removal (p < 0.0001). A comparison of penile OSI values in PD patients (post plaque removal) and the control group showed no significant differences (p = 0.418). Conclusions: The lack of correlation between systemic OSI values and Peyronie’s plaque volume suggests that direct sampling from the site of the disease is preferable for OS studies. Conducting a penile OSI study could provide a precise oxidative marker dependent on plaque volume. In addition, the penile OSI study can biochemically monitor the therapeutic result, alongside penile ultrasound imaging. Full article
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17 pages, 1902 KiB  
Article
Enhanced Mitochondrial Dynamics and Reactive Oxygen Species Levels with Reduced Antioxidant Defenses in Human Epicardial Adipose Tissue
by Ana Burgeiro, Diana Santos, Ana Catarina R. G. Fonseca, Inês Baldeiras, Ermelindo C. Leal, João Moura, João Costa-Nunes, Patrícia Monteiro Seraphim, Aryane Oliveira, António Canotilho, Gonçalo Coutinho, David Prieto, Pedro Antunes, Manuel Antunes and Eugenia Carvalho
Metabolites 2025, 15(7), 481; https://doi.org/10.3390/metabo15070481 - 16 Jul 2025
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Abstract
Background/Objectives: Epicardial adipose tissue (EAT) is metabolically active and is in dynamic crosstalk with the surrounding cardiomyocytes, modulating their function and metabolism. Oxidative stress is a key contributor to cell death and cardiac remodeling, is a hallmark of diabetes (DM) and cardiovascular [...] Read more.
Background/Objectives: Epicardial adipose tissue (EAT) is metabolically active and is in dynamic crosstalk with the surrounding cardiomyocytes, modulating their function and metabolism. Oxidative stress is a key contributor to cell death and cardiac remodeling, is a hallmark of diabetes (DM) and cardiovascular disease, such as coronary artery disease (CAD). However, little is known about these processes in EAT from patients undergoing cardiac surgery. This study investigates changes in mitochondrial dynamics, reactive oxygen species (ROS) production, and antioxidant defense levels in EAT compared to subcutaneous adipose tissue (SAT) in patients undergoing cardiac surgery, with a focus on the impact of DM and CAD. Methods: Adipose tissue biopsies were collected from 128 patients undergoing surgical cardiac intervention. Mitochondrial dynamics and oxidative stress markers were analyzed. Results: EAT exhibited increased expression of mitochondrial fusion markers [mitofusin 1 (p ≤ 0.001), mitofusin 2 (p = 0.038), and optic atrophy 1 (p ≤ 0.001)], as well as fission markers [fission 1 (p ≤ 0.001) and dynamin-related protein 1 (p ≤ 0.001)] relative to SAT. Additionally, ROS levels (dihydroethidium, p = 0.004) were elevated, while lipid peroxidation (malondialdehyde, p ≤ 0.001) was reduced in EAT compared to SAT. Reduced glutathione (GSH) levels (p ≤ 0.001) and the redox buffer ratio between reduced and oxidized glutathione (GSH/GSSG, p ≤ 0.001) were significantly increased in EAT. Interestingly, glutathione peroxidase activity (p ≤ 0.001) and the antioxidant defense markers catalase (p ≤ 0.001) and superoxide dismutase 2 (p = 0.001) were significantly reduced in EAT compared to SAT. Conclusions: The findings provide a unique molecular insight into the mitochondrial dynamics and oxidative stress profiles of EAT, highlighting potential avenues for a novel diagnostic method and therapeutic strategies for cardiac disease. Full article
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