Phenol, a monosubstituted aromatic hydrocarbon with various commercial uses, is a major organic constituent in industrial wastewaters. The ecotoxic action of phenol for aquatic environment is well known. In this study, rapid phenol toxicity tests (1h) were developed based on chlorophyll a (Chl a) fluorescence and the movement parameters of the freshwater flagellate, Euglena agilis Carter. Phenol significantly reduced the maximum quantum yield (Fv/Fm) of photosystem II (PS II) and the maximum photosynthetic electron transport rate (rETRmax) with median effective concentration (EC50) values of 8.94 and 4.67 mM, respectively. Phenol reduced the motility and triggered change in the swimming velocity of the test organism. Among the parameters tested, velocity was the most sensitive biomarker with an EC50 of 3.17 mM. The EC50 values for Fv/Fm, motility, and velocity appear to overlap the permitted levels of phenol. In conclusion, the photosynthesis and movement of E. agilis can be fast and sensitive risk assessment parameters for the evaluation of phenol toxicity in municipal and industrial effluents.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.aquatox.2014.05.014 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Efficiency of Chitosan Against Tert Butylhydroquinone (TBHQ)-Induced Neurobehavioral Changes and Toxicity Effects in Male Rats.
Front Biosci (Landmark Ed)
January 2025
Department of Zoology, College of Science, King Saud University, 11451 Riyadh, Saudi Arabia.
Background: We investigated chitosan's protective effects against tertiary butylhydroquinone (TBHQ)-induced toxicity in adult male rats, focusing on cognitive functions and oxidative stress in the brain, liver, and kidneys.
Methods: Rats were divided into four groups (n = 8/group): (1) Control, (2) Chitosan only, (3) TBHQ only, and (4) Chitosan + TBHQ.
Results: TBHQ exposure led to significant cognitive impairments and increased oxidative stress, marked by elevated malondialdehyde (MDA) and decreased superoxide dismutase (SOD) and glutathione (GSH) levels.
L. Herb Extracts: Phytochemical Composition and Pharmacological Activity Screening.
Plants (Basel)
January 2025
Institute of Pharmacy, Faculty of Medicine, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
The genus (Lamiaceae family) comprises approximately 300 species, which are widely used in traditional medicine for their diaphoretic, antiseptic, hemostatic, and anti-inflammatory properties, but scarcely in official ones. Therefore, the study of holds promise for developing new medicinal products. In aqueous and aqueous-alcoholic soft extracts of the herb, 16 amino acids, 20 phenolics, and 10 volatile substances were identified by HPLC and GC/MS.
View Article and Find Full Text PDFPolyphenolic Hispolon Derived from Medicinal Mushrooms of the and Genera Promotes Wound Healing in Hyperglycemia-Induced Impairments.
Nutrients
January 2025
Department of Pharmacy and Master Program, Collage of Pharmacy and Health Care, Tajen University, Yanpu Township 90741, Taiwan.
: This study investigated the wound-healing potential of hispolon, a polyphenolic pigment derived from medicinal mushrooms, under diabetic conditions using both in vitro and in vivo models. : In the in vitro assays, L929 fibroblast cells exposed to high glucose (33 mmol/L) were treated with hispolon at concentrations of 2.5, 5, 7.
View Article and Find Full Text PDFRuthenium(II) Complex with 1-Hydroxy-9,10-Anthraquinone Inhibits Cell Cycle Progression at G0/G1 and Induces Apoptosis in Melanoma Cells.
Pharmaceuticals (Basel)
January 2025
Instituto de Química, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas 37130-000, MG, Brazil.
Background: Melanoma is the most aggressive and lethal skin cancer that affects thousands of people worldwide. Ruthenium complexes have shown promising results as cancer chemotherapeutics, offering several advantages over platinum drugs, such as potent efficacy, low toxicity, and less drug resistance. Additionally, anthraquinone derivatives have broad therapeutic applications, including melanoma.
View Article and Find Full Text PDFIndomethacin-Induced Gastric Ulcer in Rats: Gastroprotectivity of in Water.
Pharmaceuticals (Basel)
December 2024
Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum 25240, Türkiye.
The plant . is employed in both raw and cooked forms for the treatment of gastric diseases, as an expectorant, and for the treatment of warts and the enhancement of urine. A review of the scientific literature revealed no studies investigating the effect of (MN) water extract on gastric diseases.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!