PMID- 21459411
OWN - NLM
STAT- MEDLINE
DCOM- 20110920
LR  - 20131121
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 84
IP  - 5
DP  - 2011 Jul
TI  - Alteration of shell nacre micromorphology in blue mussel Mytilus edulis after 
      exposure to free-ionic silver and silver nanoparticles.
PG  - 701-6
LID - 10.1016/j.chemosphere.2011.03.021 [doi]
AB  - This study describes the morphology of inner shell surface (ISS) of the blue 
      mussel Mytilus edulis Linnaeus after short-term exposures to radiolabeled silver 
      in free-ionic ((110m)Ag(+)) and engineered nanoparticulate ((110m)AgNPs, <40 nm) 
      phases. Radiolabeled silver in starting solutions was used in a similar low 
      concentration ( approximately 15 Bq mL(-1)) for both treatments. After exposure experiments 
      radiolabeled silver was leached from the ISS using HCl. It concentration for 
      shells from both treatments was  approximately 0.5 Bq mL(-1). Whole ISS of young individuals 
      and prismatic layer of adults showed no evidence of any major alteration process 
      after silver uptake. However, the nacre portion of adult mussels exposed to both 
      treatments revealed distinct doughnut shape structures (DSS) formed by calcium 
      carbonate micrograins that covered the surface of aragonite tablets. Scanning 
      electron microscope (SEM) imaging revealed the existence of only minor 
      differences in DSS morphology between mussels exposed to Ag(+) and AgNPs. From 
      literature survey, DSS were also found in bivalves exposed to Cd(2+). The DSS 
      occurring in a specimen of a field-collected bivalve is also shown. Formation of 
      distinctive DSS can be explained by a disturbance of the shell calcification 
      mechanism. Although the occurrence of DSS is not exclusively associated with 
      metal bioavailability to the mussels, the morphology of DSS seems to be linked to 
      the speciation of the metal used in the uptake experiments.
CI  - Copyright (c) 2011 Elsevier Ltd. All rights reserved.
FAU - Zuykov, Michael
AU  - Zuykov M
AD  - Institut des Sciences de la mer de Rimouski (ISMER), Universite du Quebec a 
      Rimouski, Rimouski, QC, Canada. m.zuykov@mail.ru
FAU - Pelletier, Emilien
AU  - Pelletier E
FAU - Belzile, Claude
AU  - Belzile C
FAU - Demers, Serge
AU  - Demers S
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110402
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Ions)
RN  - 0 (Water Pollutants, Chemical)
RN  - 3M4G523W1G (Silver)
SB  - IM
MH  - Animals
MH  - Ions/metabolism/toxicity
MH  - Metal Nanoparticles/*toxicity
MH  - Mytilus edulis/*drug effects/metabolism/physiology
MH  - Silver/metabolism/*toxicity
MH  - Water Pollutants, Chemical/metabolism/*toxicity
EDAT- 2011/04/05 06:00
MHDA- 2011/09/21 06:00
CRDT- 2011/04/05 06:00
PHST- 2011/01/02 00:00 [received]
PHST- 2011/03/04 00:00 [revised]
PHST- 2011/03/14 00:00 [accepted]
PHST- 2011/04/05 06:00 [entrez]
PHST- 2011/04/05 06:00 [pubmed]
PHST- 2011/09/21 06:00 [medline]
AID - S0045-6535(11)00290-6 [pii]
AID - 10.1016/j.chemosphere.2011.03.021 [doi]
PST - ppublish
SO  - Chemosphere. 2011 Jul;84(5):701-6. doi: 10.1016/j.chemosphere.2011.03.021. Epub 
      2011 Apr 2.