Publications by authors named "Krishnasamy Sekar Rajkumar"
Correction to: Accumulation, Chronicity, and Induction of Oxidative Stress Regulating Genes Through Allium cepa L. Functionalized Silver Nanoparticles in Freshwater Common Carp (Cyprinus carpio).
Biol Trace Elem Res
February 2023
Accumulation, Chronicity, and Induction of Oxidative Stress Regulating Genes Through Allium cepa L. Functionalized Silver Nanoparticles in Freshwater Common Carp (Cyprinus carpio).
Biol Trace Elem Res
February 2023
Article Synopsis
- Green synthesized silver nanoparticles (AgNPs), made from onion peel extract and ionic silver, were found to be toxic to aquatic species like common carp (Cyprinus carpio).
- Toxicity assessments included checking for blood changes, oxidative stress, tissue damage, and gene expression after exposing fish to different AgNP concentrations for 96 hours and then sublethal concentrations for 28 days.
- Accumulation of silver in fish organs like gills, liver, and muscle led to significant physiological changes, indicating the potential harmful effects of biogenic AgNPs on fish health and aquatic ecosystems.
There is a growing concern nowadays over the exposure of nanomaterials and their effects in aquatic life. In spite of reporting the changes in physiology, reproduction and behaviour in fish by different nanoparticles, the molecular events underlying in the aquatic bodies due to the toxicity of zinc oxide nanoparticles (ZnO NPs) are mainly unexplored. Therefore, the present study carried out an ex vivo exposure of ZnO NPs at various concentrations (0.
View Article and Find Full Text PDFBiofabrication of ecofriendly copper oxide nanoparticles using Ocimum americanum aqueous leaf extract: analysis of in vitro antibacterial, anticancer, and photocatalytic activities.
Environ Sci Pollut Res Int
July 2021
Nanotechnology tends to be a swiftly growing field of research that actively influences and inhibits the growth of bacteria/cancer. Noble metal nanoparticles (NPs) such as silver, copper, and gold have been used to damage bacterial and cancer growth over recent years; however, the toxicity of higher NPs concentrations remains a major issue. The copper oxide nanoparticles (CuONPs) were therefore fabricated using a simple green chemistry approach.
View Article and Find Full Text PDFArticle Synopsis
- The study investigates the skin mucus of three freshwater fish species—common carp, mrigal, and rohu—focusing on how different pH levels affect the extraction and activity of mucus proteins.
- It uses methanol to extract these proteins, analyzing their profiles via SDS-PAGE and assessing the activity of immune enzymes like lysozyme, alkaline phosphatase, and protease at varying pH levels.
- Results show that mrigal skin mucus at pH 8.0 exhibits the highest enzyme activity and bactericidal effectiveness against pathogens, suggesting its potential for identifying beneficial bioactive compounds.