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Biology
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Biomarkers in Stress Biology and Ecology
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Biomarkers in Stress Biology and Ecology

A special issue of Biology (ISSN 2079-7737).

Deadline for manuscript submissions: 1 June 2025 | Viewed by 6111

Special Issue Editors

Dr. Marco F. L. Lemos

E-Mail Website
Guest Editor
MARE - Marine and Environmental Sciences Centre, ESTM, Politécnico de Leiria, 2520-614 Peniche, Portugal
Interests: biotechnology; bioeconomy; biomarkers; circular economy; stress biology
Special Issues, Collections and Topics in MDPI journals
Dr. Sara C. Novais

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Guest Editor
MARE—Marine and Environmental Sciences Centre, ESTM, Politécnico de Leiria, 2520-614 Peniche, Portugal
Interests: biotechnology; marine resources valorization; genomics; biodiversity and ecosystem functioning
Special Issues, Collections and Topics in MDPI journals
Dr. Bernardo Duarte

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Guest Editor
MARE—Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal
Interests: ecotoxicology; emerging and legacy contaminants; biomarker discovery; numeric tool development; toxicophenomics
Special Issues, Collections and Topics in MDPI journals
Dr. Vanessa F. Fonseca

E-Mail Website
Guest Editor
MARE—Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal
Interests: biodiversity and ecosystem functioning; environmental risk; aquaculture and fisheries; biotechnology and resource enhancement
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Effects assessed at higher levels of biological organization (organisms or populations) are the consequence of the sum of effects at the cellular and molecular levels. Given this rationale, these lower levels of biological organization are more responsive at an early stage, making them promising tools to be used as early warning endpoints to address stress. This way, the information concerning effects at the molecular level of biological organisation (e.g., genes, transcripts, or proteins) will allow for an early-in-time assessment of future problems, which may eventually enable a timely intervention, before the impacts are visible and irreversible.

The use of biomarkers continues to thrive, and robust information continues to be generated, allowing to set up mechanisms of action and exposure endpoints for a plethora of stressors, organisms, and environments, proving its usefulness as target endpoints in stress biology and ecology studies.

Within this framework, this Special Issue will cover review articles and research papers addressing sub-individual endpoints/biomarkers in any organism, either terrestrial and aquatic environments, in laboratory studies or in the environment.

Dr. Marco F. L. Lemos
Dr. Sara C. Novais
Dr. Bernardo Duarte
Dr. Vanessa F. Fonseca
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Biology is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biomarkers
  • ecotoxicology
  • environmental contamination
  • stress ecology
  • neurotoxicity
  • oxidative stress
  • pollution

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

15 pages, 1971 KiB  
Article
Changes in Immunoglobulins G and A in the Saliva and Serum of Horses with Equine Gastric Ulcer Syndrome (EGUS) and Their Relationship with Other Immune and Redox Status Biomarkers
by María Botía, María Martín-Cuervo, Silvia Martínez-Subiela, José Joaquín Cerón, Ignacio Ayala, Sanni Hansen and Alberto Muñoz-Prieto
Biology 2024, 13(11), 891; https://doi.org/10.3390/biology13110891 - 1 Nov 2024
Viewed by 1124
Abstract
Equine Gastric Ulcer Syndrome (EGUS) is a widespread disease with a very high prevalence and importance in horses. It includes two conditions: Equine squamous gastric disease (ESGD), linked to acid disturbances, and Equine Glandular Gastric Disease (EGGD), associated with inflammation and immune system [...] Read more.
Equine Gastric Ulcer Syndrome (EGUS) is a widespread disease with a very high prevalence and importance in horses. It includes two conditions: Equine squamous gastric disease (ESGD), linked to acid disturbances, and Equine Glandular Gastric Disease (EGGD), associated with inflammation and immune system issues. In saliva, increased levels of immunological markers have been observed in this disease, indicating immune system involvement. In addition, changes in biomarkers of oxidative stress have been described. In horses, IgG and IgA are proteins that appear in saliva and serum and are considered to be the major proteins in specific immunity; however, their levels in horses with EGUS have not been previously studied. This report aims to evaluate IgG and IgA concentrations in the saliva and serum of horses with EGUS, measured by automated assays, and compare them with other biomarkers of the immune and oxidative stress system. This work validated the IgG and IgA assays in saliva and showed that IgA significantly increased in the saliva of horses with EGUS. When the correlation between IgG and IgA and other biomarkers of immune system issues and oxidative stress such as ADA, S100 A8-A9 (calprotectin), S100 A12 (calgranulin), uric acid, FRAS, and AOPP was studied, IgA in saliva showed a significant moderate correlation with adenosine deaminase, indicating its possible involvement in the immune reaction occurring in EGUS. Full article
(This article belongs to the Special Issue Biomarkers in Stress Biology and Ecology)
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16 pages, 4865 KiB  
Article
Liver and Plasma Fatty Acid Characterization in Cultured Brown Trout at Distinct Reproductive Stages
by Tânia Vieira Madureira, Diana Santos, Tiago Simões, Marco F. L. Lemos and Eduardo Rocha
Biology 2023, 12(11), 1434; https://doi.org/10.3390/biology12111434 - 15 Nov 2023
Viewed by 1287
Abstract
Fatty acids are energy sources, and their profiles are used as biomarkers of metabolic status and physiological changes in fish. Within this context, the main aim of this study was to identify the fatty acids that best discriminate the reproductive status of male [...] Read more.
Fatty acids are energy sources, and their profiles are used as biomarkers of metabolic status and physiological changes in fish. Within this context, the main aim of this study was to identify the fatty acids that best discriminate the reproductive status of male and female farmed brown trout. The fatty acid composition in liver and plasma samples from the adults of both sexes was monitored along four distinct reproductive stages, namely the spawning capable (December), regressing (March), regenerating (July), and developing (November) stages. Irrespective of the sex and stage, the most representative fatty acids were palmitic acid (16:0), stearic acid (18:0), oleic acid (18:1 n-9), arachidonic acid (20:4 n-6), eicosapentaenoic acid (EPA, 20:5 n-3), and docosahexaenoic acid (DHA, 22:6 n-3). There were no significant sex differences in fatty acid classes in the liver and plasma. Despite this, there were several changes in individual fatty acid levels between the sexes. In the liver, both males and females showed high monounsaturated fatty acid and low polyunsaturated fatty acid (PUFA) levels during the regressing and regenerating stages. At spawning capable and developing stages, a reverse profile was noted. The plasma profiles were mainly influenced by changes in saturated fatty acids and PUFAs in males and by PUFA in females. Based on the most representative fatty acids, four patterns were established for female plasma samples, one for each reproductive stage. This scenario suggests that female plasma samples are promising for the discrimination of gonadal reproductive status, and this potential can be further explored in aquaculture and environmental monitoring studies. Full article
(This article belongs to the Special Issue Biomarkers in Stress Biology and Ecology)
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19 pages, 7261 KiB  
Article
The Effect of the Pyrethroid Pesticide Fenpropathrin on the Cardiac Performance of Zebrafish and the Potential Mechanism of Toxicity
by Ferry Saputra, Yu-Heng Lai, Marri Jmelou M. Roldan, Honeymae C. Alos, Charlaine A. Aventurado, Ross D. Vasquez and Chung-Der Hsiao
Biology 2023, 12(9), 1214; https://doi.org/10.3390/biology12091214 - 6 Sep 2023
Cited by 8 | Viewed by 2553
Abstract
Fenpropathrin, a pyrethroid insecticide, has been widely used for many years in agricultural fields. It works by disturbing the voltage-gated sodium channel, leading to paralysis and the death of the target animal. While past studies have focused on neurodegeneration following fenpropathrin poisoning in [...] Read more.
Fenpropathrin, a pyrethroid insecticide, has been widely used for many years in agricultural fields. It works by disturbing the voltage-gated sodium channel, leading to paralysis and the death of the target animal. While past studies have focused on neurodegeneration following fenpropathrin poisoning in humans, relatively few pieces of research have examined its effect on other peripheral organs. This study successfully investigated the potential toxicity of fenpropathrin on the cardiovascular system using zebrafish as an animal model. Zebrafish larvae exposed to varying doses of fenpropathrin underwent an evaluation of cardiac physiology by measuring the heart rate, stroke volume, cardiac output, and shortening fraction. The blood flow velocity and the dorsal aorta diameter were also measured to assess the impact of fenpropathrin exposure on the vascular system. Furthermore, molecular docking was performed to evaluate the pesticide binding affinity to various proteins associated with the cardiovascular system, revealing the potential mechanism of the fenpropathrin cardiotoxic effect. The findings demonstrated a significant dose-dependent increase in the heart rate stroke volume, cardiac output, shortening fraction, and ejection fraction of zebrafish larvae after 24 h of acute treatment with fenpropathrin. Additionally, zebrafish treated at a concentration of 1 ppm exhibited significantly larger blood vessels in diameter and an increased blood flow velocity compared to the control group. According to molecular docking, fenpropathrin showed a high affinity for various voltage-gated sodium channels like scn1lab, cacna1sb, and clcn3. Finally, from the results, we found that fenpropathrin caused cardiomegaly, which may have been induced by the voltage-gated sodium channel disruption. This study highlights the significant disruption of fenpropathrin in the cardiovascular system and emphasizes the need for further research on the health implications of this pesticide. Full article
(This article belongs to the Special Issue Biomarkers in Stress Biology and Ecology)
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