Cited by 68Pharmaceutical and Antibiotic Environmental ImpactsEnvironmental Toxicology and EcotoxicologyAquatic Ecosystems and Phytoplankton Dynamics

Impact of erythromycin on a non-target organism: Cellular effects on the freshwater microalga Pseudokirchneriella subcapitata

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Machado, Manuela D., Soares, Eduardo V.·2019·Aquatic Toxicology

Abstract

The increasing and indiscriminate use of antibiotics is the origin of their introduction in aquatic systems through domestic and livestock effluents. The occurrence of erythromycin (ERY), a macrolide antibiotic, in water bodies raises serious concerns about its potential toxic effect in aquatic biota (non-target organisms), particularly in microalgae, the first organisms in contact with aquatic contaminants. This study aimed to evaluate the possible toxic effects of ERY on relevant cell targets of the freshwater microalga Pseudokirchneriella subcapitata. Algal cells incubated with significant environmental ERY concentrations presented disturbance of the photosynthetic apparatus (increased algal autofluorescence and reduction of chlorophyll a content) and mitochondrial function (hyperpolarization of mitochondrial membrane). These perturbations can apparently be attributed to the similarity of the translational machinery of these organelles (chloroplasts and mitochondria) with the prokaryotic cells. P. subcapitata cells treated with ERY showed a modification of metabolic activity (increased esterase activity) and redox state (alteration of intracellular levels of reactive oxygen species and reduced glutathione content) and an increased biovolume. ERY induced an algistatic effect: reduction of growth rate without loss of cell viability (plasma membrane integrity). The present study shows that chronic exposure (72 h), at low (μg L-1) ERY concentrations (within the range of concentrations detected in surface and ground waters), induce disturbances in the physiological state of the alga P. subcapitata. Additionally, this work alerts to the possible negative impact of the uncontrolled use of ERY on the aquatic systems.

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Crossref · 10.1016/j.aquatox.2019.01.014

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Authors
Machado, M. D., & Soares, E. V.
Affiliations
Centro de Inovação em Engenharia e Tecnologia Industrial (PT)
Corresponding author
  • Machado, Manuela D.
  • Soares, Eduardo V.
Venue
Aquatic Toxicology
Publisher
Elsevier BV
Published
2019-03
Volume
208
Pages
179-186
ISSN
0166-445X (ISSN-L)
OpenAlex
W2909818607
Cited by
68
References
72
Citations by year
2026: 6 · 2025: 12 · 2024: 9 · 2023: 12 · 2022: 10 · 2021: 11 · 2020: 7 · 2019: 1
FWCI
2.17
Type
journal article
Language
en
Open access
Locations
  • Aquatic Toxicology (publishedVersion)
  • PubMed (publishedVersion)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
Funders
  • Portuguese Foundation for Science and Technology (FCT) (UID/BIO/04469/2013)
  • COMPETE 2020 (POCI-01-0145-FEDER-006684)
  • BioTecNorte operation (NORTE-01-0145-FEDER-000004)
  • European Regional Development Fund
  • FCT (SFRH/BPD/72816/2010)
Topics
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
erythromycin, macrolide antibiotics, Pseudokirchneriella subcapitata, freshwater microalgae, antibiotic toxicity, photosynthetic apparatus, chlorophyll a, mitochondrial membrane hyperpolarization, esterase activity, reactive oxygen species, glutathione, non-target organisms
MeSH terms
Chlorophyll A, Anti-Bacterial Agents, Cell Survival, Erythromycin, Fluorescence, Fresh Water, Glutathione, Water Pollutants, Chemical, Reactive Oxygen Species, Intracellular Space, Membrane Potential, Mitochondrial, Microalgae

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