title: Beneficial properties of selenium incorporated guar gum nanoparticles against ischemia/reperfusion in cardiomyoblasts (H9c2).
abstract: Nanotechnology for the treatment and diagnosis has been emerging recently as a potential area of research and development. In the present study, selenium incorporated guar gum nanoparticles have been prepared by nanoprecipitation and characterized by transmission electron microscopy and particle size analysis. The nanoparticles were screened for antioxidant potential (metal chelation, total reducing power and hydroxyl radical scavenging activity) and were evaluated against the cell line based cardiac ischemia/reperfusion model with special emphasis on oxidative stress and mitochondrial parameters. The cell based cardiac ischemia model was employed using H9c2 cell lines. Investigations revealed that there was a significant alteration (P ≤ 0.05) in the innate antioxidant status (glutathione↓, glutathione peroxidase↓, thioredoxin reductase↓, superoxide dismutase↓, catalase↓, lipid peroxidation↑, protein carbonyl↑, xanthine oxidase↑ and caspase 3 activity↑), mitochondrial functions (reactive oxygen species generation, membrane potential, and pore opening) and calcium homeostasis (calcium ATPase and intracellular calcium overload) during both ischemia and reperfusion. For comparative evaluation, selenium, guar gum and selenium incorporated guar gum nanoparticles were evaluated for their protective properties against ischemia/reperfusion. The study reveals that selenium incorporated guar gum nanoparticles were better at protecting the cells from ischemia/reperfusion compared to selenium and guar gum nanoparticles. The potent antioxidant capability shown by the sample in in vitro assays may be the biochemical basis of its better biological activity. Further, the nanodimensions of the particle may be the additional factor responsible for its better effect.
authors.affiliation: Agroprocessing and Natural Products Division, CSIR - National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695019, Kerala, India. raghukgopal2009@gmail.com.
authors.forename: R S
authors.initials: RS
authors.lastname: Soumya
authors.forename: V P
authors.initials: VP
authors.lastname: Vineetha
authors.forename: P
authors.initials: P
authors.lastname: Salin Raj
authors.forename: K G
authors.initials: KG
authors.lastname: Raghu
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000032:analysis / Q000378:metabolism; D002118:Calcium / Q000032:analysis / Q000378:metabolism; D002460:Cell Line; D005685:Galactans / Q000737:chemistry / Q000494:pharmacology*; D008351:Mannans / Q000737:chemistry / Q000494:pharmacology*; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D008954:Models, Biological; D032386:Myoblasts, Cardiac / Q000166:cytology / Q000187:drug effects*; D053758:Nanoparticles / Q000737:chemistry*; D053149:Plant Gums / Q000737:chemistry / Q000494:pharmacology*; D051381:Rats; D017382:Reactive Oxygen Species / Q000032:analysis / Q000378:metabolism; D015427:Reperfusion Injury / Q000378:metabolism*; D012643:Selenium / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D005685:Galactans; D008351:Mannans; D053149:Plant Gums; D017382:Reactive Oxygen Species; C007894:guar gum; D012643:Selenium; D002118:Calcium