Anthracene-Induced Enzymatic Changes as Stress Indicators in African Catfish, Heterobranchus bidorsalis Geoffroy Saint Hilaire, 1809

Role of Integrated Biomarker Response Tool for Assessment of Naphthalene Toxicity in Anabas testudineus

Polyaromatic hydrocarbons are highly stable and can easily permeate through biological membranes due to their lipophilic nature. They are characterized by their ability to act at the site of application and even at sites distant to the zone of application. Any contamination associated with aquatic bodies due to the presence of PAHs can be assessed by investigating biochemical changes. The most common polycyclic aromatic hydrocarbon (PAH) pollutant naphthalene was selected for the bioassay experiment using Indian climbing perch Anabas testudineus. The biochemical response in the muscle tissue was investigated after exposure to varying concentrations of naphthalene by estimating protein, glycogen, Alanine Aminotransaminase, and Aspartate Aminotransaminase. The results showed inhibition of protein and glycogen levels due to naphthalene stress. Similarly, a decrease in the activity of transaminase in muscle tissues was noticed. The results have been computed using star plots for interpretation of integrated biomarker response (IBR). The results clearly support the role of biochemical parameters in assessing the impact of naphthalene stress on fish health. IBR index can be developed as a useful tool in monitoring quantitative as well as the qualitative effect of naphthalene toxicity in fishes and other aquatic animals.

Synthesis, Molecular Docking, Druglikeness Analysis, and ADMET Prediction of the Chlorinated Ethanoanthracene Derivatives as Possible Antidepressant Agents

Ethanoanthracene cycloadducts (5–7) anti, (5–7) syn, and (5–7) dec have been synthesized from the Diels–Alder (DA) reaction of diene 1,8-dichloroanthracene 2, with the dienophiles; acrylonitrile 3, 1-cynavinyl acetate 4, and phenyl vinyl sulfone 5, individually. The steric effect of dienophile substituents were more favorable toward the anti-isomer formation as deduced from 1H-NMR spectrum. The cheminformatics prediction for (5–7) anti and (5–7) syn was investigated. The in silico anticipated anti-depression activity of the (5–7) anti and (5–7) syn compounds were investigated and compared to maprotiline 9 as reference anti-depressant drug. The study showed that steric interactions play a crucial role in the binding affinity of these compounds to the representative models; 4xnx, 2QJU, and 3GWU. The pharmacokinetic and drug-like properties of (5–7) anti and (5–7) syn exhibited that these compounds could be represented as potential candidates for further development into antidepressant-like agents.