PMID- 28791053 OWN - NLM STAT- MEDLINE DCOM- 20180507 LR - 20231213 IS - 1942-0994 (Electronic) IS - 1942-0900 (Print) IS - 1942-0994 (Linking) VI - 2017 DP - 2017 TI - ROS-Mediated Apoptosis and Genotoxicity Induced by Palladium Nanoparticles in Human Skin Malignant Melanoma Cells. PG - 8439098 LID - 10.1155/2017/8439098 [doi] LID - 8439098 AB - The present work was designed to investigate the effect of palladium nanoparticles (PdNPs) on human skin malignant melanoma (A375) cells, for example, induction of apoptosis, cytotoxicity, and DNA damage. Diseases resulting from dermal exposure may have a significant impact on human health. There is a little study that has been reported on the toxic potential of PdNPs on A375. Cytotoxic potential of PdNPs (0, 5, 10, 20, and 40 mug/ml) was measured by tetrazolium bromide (MTT assay) and NRU assay in A375 cells. PdNPs elicited concentration and time-dependent cytotoxicity, and longer exposure period induced more cytotoxicity as measured by MTT and NRU assay. The molecular mechanisms of cytotoxicity through cell cycle arrest and apoptosis were investigated by AO (acridine orange)/EtBr (ethidium bromide) stain and flow cytometry. PdNPs not only inhibit proliferation of A375 cells in a dose- and time-dependent model but also induce apoptosis and cell cycle arrest at G2/M phase (before 12 h) and S phase (after 24 h). The induction of oxidative stress in A375 cells treated with above concentration PdNPs for 24 and 48 h increased ROS level; on the other hand, glutathione level was declined. Apoptosis and DNA damage was significantly increased after treatment of PdNPs. Considering all results, PdNPs showed cytotoxicity and genotoxic effect in A375 cells. FAU - Alarifi, Saud AU - Alarifi S AD - Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia. FAU - Ali, Daoud AU - Ali D AUID- ORCID: 0000-0002-1045-4984 AD - Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia. FAU - Alkahtani, Saad AU - Alkahtani S AD - Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia. FAU - Almeer, Rafa S AU - Almeer RS AD - Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia. LA - eng PT - Journal Article DEP - 20170716 PL - United States TA - Oxid Med Cell Longev JT - Oxidative medicine and cellular longevity JID - 101479826 RN - 0 (Reactive Oxygen Species) RN - 5TWQ1V240M (Palladium) SB - IM MH - Apoptosis/*drug effects MH - Cell Line, Tumor MH - DNA Damage/drug effects MH - Dynamic Light Scattering MH - Humans MH - Melanoma/*metabolism MH - Membrane Potential, Mitochondrial/drug effects MH - Microscopy, Electron, Transmission MH - Oxidative Stress/drug effects MH - Palladium/*pharmacology MH - Reactive Oxygen Species/*metabolism MH - Skin Neoplasms/*metabolism MH - Melanoma, Cutaneous Malignant PMC - PMC5534296 EDAT- 2017/08/10 06:00 MHDA- 2018/05/08 06:00 PMCR- 2017/07/16 CRDT- 2017/08/10 06:00 PHST- 2017/03/02 00:00 [received] PHST- 2017/05/16 00:00 [revised] PHST- 2017/06/01 00:00 [accepted] PHST- 2017/08/10 06:00 [entrez] PHST- 2017/08/10 06:00 [pubmed] PHST- 2018/05/08 06:00 [medline] PHST- 2017/07/16 00:00 [pmc-release] AID - 10.1155/2017/8439098 [doi] PST - ppublish SO - Oxid Med Cell Longev. 2017;2017:8439098. doi: 10.1155/2017/8439098. Epub 2017 Jul 16.