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Advance of Cell Metabolism in Endocrine Diseases
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Advance of Cell Metabolism in Endocrine Diseases

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Endocrinology and Metabolism".

Deadline for manuscript submissions: 30 March 2025 | Viewed by 4188

Special Issue Editor

Dr. Antonella Muscella

E-Mail Website
Guest Editor
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Provinciale Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
Interests: signal transduction; hormones; apoptosis; autophagy; metabolism
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Cellular metabolism is a complex set of biochemical reactions that allow cells to produce energy, synthesize molecules, and maintain homeostasis.

This dynamic system responds to external factors such as nutrients, physical activity, and environmental conditions, adapting energy consumption and the synthesis of biomolecules according to the needs of the organism. Hormones, released by the endocrine glands, finely regulate cellular metabolism, influencing processes such as glycolysis, lipolysis, and protein synthesis.

Endocrine disorders, such as obesity, diabetes, hypo/hyperthyroidism, polycystic ovary syndrome (PCOS), Addison’s disease, and Cushing’s syndrome, profoundly alter metabolism, leading to imbalances in the management of glucose, fats, and proteins. For example, insulin resistance in diabetes prevents cells from using glucose, while thyroid dysfunction alters the basal metabolic rate. These metabolic alterations contribute to systemic complications, including chronic inflammation, cardiovascular dysfunction, and an increased risk of other chronic diseases.

Understanding the mechanisms underlying these hormonal signals may lead to new therapeutic strategies. Furthermore, recent advances in metabolomics and systems biology promise to provide new insights into dynamic metabolism, revealing potential biomarkers, therapeutic targets, and the possibility of personalized medicine to treat metabolic and endocrine disorders more effectively.

Dr. Antonella Muscella
Guest Editor

Manuscript Submission Information

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Keywords

  • cellular metabolism
  • homeostasis
  • endocrine disorders
  • hormonal signals
  • dynamic system

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Published Papers (4 papers)

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Research

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18 pages, 3127 KiB  
Article
Deciphering the Association: Critical HDL-C Levels and Their Impact on the Glycation Gap in People Living with HIV
by Elsa J. Anaya-Ambriz, Monserrat Alvarez-Zavala, Luz A. González-Hernández, Jaime F. Andrade-Villanueva, Sergio Zuñiga-Quiñones, Adriana Valle-Rodríguez, Tania E. Holguin-Aguirre and Karina Sánchez-Reyes
Int. J. Mol. Sci. 2025, 26(3), 914; https://doi.org/10.3390/ijms26030914 - 22 Jan 2025
Viewed by 451
Abstract
People Living with HIV (PLWHIV) present an increased risk of developing non-communicable diseases, such as type 2 diabetes (T2D), making it crucial to optimize glycemic control and assess metabolic markers. HbA1c is considered the gold standard for evaluating glycemic control, while fructosamine (FA) [...] Read more.
People Living with HIV (PLWHIV) present an increased risk of developing non-communicable diseases, such as type 2 diabetes (T2D), making it crucial to optimize glycemic control and assess metabolic markers. HbA1c is considered the gold standard for evaluating glycemic control, while fructosamine (FA) offers advantages in assessing non-glycemic determinants. Discrepancies between HbA1c and FA are common and may be influenced by temporal factors. The Glycation Gap (G-gap) emerges as a tool to clarify these discrepancies. A cross-sectional analytical study was conducted involving PLWHIV with various glycemic statuses, as well as patients with T2D and controls. Sociodemographic data were collected along with blood samples to measure biochemical profiles and FA. HbA1c predicted from FA (pHbA1c) was calculated using a linear regression equation, facilitating G-gap determination. A positive correlation was found between G-gap and levels of VLDL-C and triglycerides (TG). Additionally, a negative correlation was observed between HDL-C levels < 40 mg/dL and a positive G-gap. These associations suggest that the G-gap may be a useful tool for metabolic evaluation in PLWHIV and a preventive method for identifying individuals at risk of developing chronic complications related to T2D. Full article
(This article belongs to the Special Issue Advance of Cell Metabolism in Endocrine Diseases)
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21 pages, 11820 KiB  
Article
The Impact of Resident Adipose Tissue Macrophages on Adipocyte Homeostasis and Dedifferentiation
by Julia Neugebauer, Nora Raulien, Lilli Arndt, Dagmar Akkermann, Constance Hobusch, Andreas Lindhorst, Janine Fröba and Martin Gericke
Int. J. Mol. Sci. 2024, 25(23), 13019; https://doi.org/10.3390/ijms252313019 - 4 Dec 2024
Viewed by 753
Abstract
Obesity is concurrent with immunological dysregulation, resulting in chronic low-grade inflammation and cellular dysfunction. In pancreatic islets, this loss of function has been correlated with mature β-cells dedifferentiating into a precursor-like state through constant exposure to inflammatory stressors. As mature adipocytes likewise have [...] Read more.
Obesity is concurrent with immunological dysregulation, resulting in chronic low-grade inflammation and cellular dysfunction. In pancreatic islets, this loss of function has been correlated with mature β-cells dedifferentiating into a precursor-like state through constant exposure to inflammatory stressors. As mature adipocytes likewise have the capability to dedifferentiate in vitro and in vivo, we wanted to analyze this cellular change in relation to adipose tissue (AT) inflammation and adipose tissue macrophage (ATM) activity. Using our organotypic AT explant culture method combined with a double-reporter mouse model for labeling ATMs and mature adipocytes, we were able to visualize and quantify dedifferentiated fat (DFAT) cells in AT explants. Preliminary testing showed increased dedifferentiation after tamoxifen (TAM) stimulation, making TAM-dependent lineage-tracing models unsuitable for quantification of naturally occurring DFAT cells. The regulatory role of ATMs in adipocyte dedifferentiation was shown through macrophage depletion using Plexxicon 5622 or clodronate liposomes, which significantly increased DFAT cell levels. Subsequent bulk RNA sequencing of macrophage-depleted explants revealed enrichment of the tumor necrosis factor α (TNFα) signaling pathway as well as downregulation of associated genes. Direct stimulation with TNFα decreased adipocyte dedifferentiation, while application of a TNFα-neutralizing antibody did not significantly alter DFAT cell levels. Our findings suggest a regulatory role of resident ATMs in maintaining the mature adipocyte phenotype and preventing excessive adipocyte dedifferentiation. The specific regulatory pathways as well as the impact that DFAT cells might have on ATMs, and vice versa, are subject to further investigation. Full article
(This article belongs to the Special Issue Advance of Cell Metabolism in Endocrine Diseases)
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15 pages, 1701 KiB  
Article
Lipidomics of Caco-2 Cells Under Simulated Microgravity Conditions
by Giulia Tolle, Gabriele Serreli, Monica Deiana, Loredana Moi, Patrizia Zavattari, Antonella Pantaleo, Cristina Manis, Mohammed Amine El Faqir and Pierluigi Caboni
Int. J. Mol. Sci. 2024, 25(23), 12638; https://doi.org/10.3390/ijms252312638 - 25 Nov 2024
Viewed by 740
Abstract
Microgravity may profoundly impact the cardiovascular system, skeletal muscle system, and immune system of astronauts. At the cellular level, microgravity may also affect cell proliferation, differentiation, and growth, as well as lipid metabolism. In this work, we investigated lipid changes in Caco-2 cells [...] Read more.
Microgravity may profoundly impact the cardiovascular system, skeletal muscle system, and immune system of astronauts. At the cellular level, microgravity may also affect cell proliferation, differentiation, and growth, as well as lipid metabolism. In this work, we investigated lipid changes in Caco-2 cells cultured in a clinostat for 24 h under simulated microgravity conditions (SMC). Complex lipids were measured using a UHPLC-QTOF/MS platform, and the data were subjected to multivariate analysis. Under SMC, levels of ceramides Cer 18:0;O2/16:0, Cer 18:1;O2/16:0, Cer 18:1; O2/22:0, Cer 18:1;O2/24:0, and Cer 18:2;O2/24:0 were found to be upregulated, while sphingomyelins SM 16:1;O2/16:0, SM 16:1;O2/18:1, SM 18:1;O2/24:0, and SM 18:2;O2/24:0 were found to be downregulated. On the other hand, considering that sphingolipids are involved in the process of inflammation, we also treated Caco-2 cells with dextran sodium sulfate (DSS) to induce cell inflammation and lipopolysaccharide (LPS) to induce cell immune responses. As a result, we observed similar lipid dysregulation, indicating that SMC may exert a condition similar to inflammation. Our lipidomics strategy provides new insights into the altered metabolic pathway of ceramides and sphingomyelins of Caco-2 cells under SMC. Full article
(This article belongs to the Special Issue Advance of Cell Metabolism in Endocrine Diseases)
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Review

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27 pages, 3910 KiB  
Review
Role of Fatty Acids β-Oxidation in the Metabolic Interactions Between Organs
by Alexander V. Panov, Vladimir I. Mayorov and Sergey I. Dikalov
Int. J. Mol. Sci. 2024, 25(23), 12740; https://doi.org/10.3390/ijms252312740 - 27 Nov 2024
Cited by 1 | Viewed by 1999
Abstract
In recent decades, several discoveries have been made that force us to reconsider old ideas about mitochondria and energy metabolism in the light of these discoveries. In this review, we discuss metabolic interaction between various organs, the metabolic significance of the primary substrates [...] Read more.
In recent decades, several discoveries have been made that force us to reconsider old ideas about mitochondria and energy metabolism in the light of these discoveries. In this review, we discuss metabolic interaction between various organs, the metabolic significance of the primary substrates and their metabolic pathways, namely aerobic glycolysis, lactate shuttling, and fatty acids β-oxidation. We rely on the new ideas about the supramolecular structure of the mitochondrial respiratory chain (respirasome), the necessity of supporting substrates for fatty acids β-oxidation, and the reverse electron transfer via succinate dehydrogenase during β-oxidation. We conclude that ATP production during fatty acid β-oxidation has its upper limits and thus cannot support high energy demands alone. Meanwhile, β-oxidation creates conditions that significantly accelerate the cycle: glucose-aerobic glycolysis-lactate-gluconeogenesis-glucose. Therefore, glycolytic ATP production becomes an important energy source in high energy demand. In addition, lactate serves as a mitochondrial substrate after converting to pyruvate + H+ by the mitochondrial lactate dehydrogenase. All coupled metabolic pathways are irreversible, and the enzymes are organized into multienzyme structures. Full article
(This article belongs to the Special Issue Advance of Cell Metabolism in Endocrine Diseases)
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