PMID- 29331621 OWN - NLM STAT- MEDLINE DCOM- 20180312 LR - 20181202 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 196 DP - 2018 Apr TI - Silver ion-enhanced particle-specific cytotoxicity of silver nanoparticles and effect on the production of extracellular secretions of Phanerochaete chrysosporium. PG - 575-584 LID - S0045-6535(17)32163-X [pii] LID - 10.1016/j.chemosphere.2017.12.185 [doi] AB - This study investigated the influence of silver ions (Ag(+)) on the cytotoxicity of silver nanoparticles (AgNPs) in Phanerochaete chrysosporium and noted the degree of extracellular secretions in response to the toxicant's stress. Oxalate production was elicited with moderate concentrations of 2,4-dichlorophenol (2,4-DCP) and AgNPs reaching a plateau at 10 mg/L and 10 muM, respectively. Increased oxalate accumulation was accompanied by higher activities of manganese peroxidase (MnP) and lignin peroxidase (LiP). However, the secretion of oxalate, MnP and LiP was significantly inhibited owing to Ag(+) incorporation into AgNP solution. Production of extracellular polymeric substances (EPS) significantly elevated with an increase in 2,4-DCP concentrations; however, after 24 h of exposure to 100 mg/L 2,4-DCP, an obvious decrease in EPS occurred, indicating that part of EPS could be consumed as carbon and energy sources to ameliorate biological tolerance to toxic stress. Furthermore, AgNP-induced "particle-specific" cytotoxicity was substantially enhanced with additional Ag(+) as evidenced by its significant negative impact on cellular growth, plasma membrane integrity, and morphological preservation compared with AgNPs at equal Ag concentration. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Huang, Zhenzhen AU - Huang Z AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. FAU - Xu, Piao AU - Xu P AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. FAU - Chen, Guiqiu AU - Chen G AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. FAU - Zeng, Guangming AU - Zeng G AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. Electronic address: zgming@hnu.edu.cn. FAU - Chen, Anwei AU - Chen A AD - College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China. Electronic address: A.Chen@hunau.edu.cn. FAU - Song, Zhongxian AU - Song Z AD - School of Municipal and Environmental Engineering, Henan University of Urban Construction, Pingdingshan, 467036, PR China. FAU - He, Kai AU - He K AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. FAU - Yuan, Lei AU - Yuan L AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. FAU - Li, Hui AU - Li H AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. FAU - Hu, Liang AU - Hu L AD - College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China. LA - eng PT - Journal Article DEP - 20171230 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Chlorophenols) RN - 0 (Ions) RN - 0 (Oxalates) RN - 0 (colloidal silver) RN - 3M4G523W1G (Silver) RN - EC 1.11.1.- (Peroxidases) RN - EC 1.11.1.- (lignin peroxidase) RN - EC 1.11.1.13 (manganese peroxidase) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Chlorophenols MH - Ions/*pharmacology MH - Metal Nanoparticles/*toxicity MH - Oxalates/metabolism MH - Peroxidases/metabolism MH - Phanerochaete/drug effects/*metabolism MH - Silver/*toxicity OTO - NOTNLM OT - Enhanced "particle-specific" cytotoxicity OT - Extracellular secretions OT - Phanerochaete chrysosporium OT - Silver ions OT - Silver nanoparticles EDAT- 2018/01/15 06:00 MHDA- 2018/03/13 06:00 CRDT- 2018/01/15 06:00 PHST- 2017/09/01 00:00 [received] PHST- 2017/12/19 00:00 [revised] PHST- 2017/12/28 00:00 [accepted] PHST- 2018/01/15 06:00 [pubmed] PHST- 2018/03/13 06:00 [medline] PHST- 2018/01/15 06:00 [entrez] AID - S0045-6535(17)32163-X [pii] AID - 10.1016/j.chemosphere.2017.12.185 [doi] PST - ppublish SO - Chemosphere. 2018 Apr;196:575-584. doi: 10.1016/j.chemosphere.2017.12.185. Epub 2017 Dec 30.