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Wu C, Guo WB, Liu YY, Yang L, Miao AJ. Molecular mechanisms underlying the calcium-mediated uptake of hematite nanoparticles by the ciliate Tetrahymena thermophila. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117749. [PMID: 34329064 DOI: 10.1016/j.envpol.2021.117749] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/21/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
In aquatic ecosystems, the calcium (Ca) concentration varies greatly. It is well known that Ca affects the aggregation of nanoparticles (NPs) and thus their bioaccumulation. Nevertheless, Ca also plays critical roles in various biological processes, whose effects on NP accumulation in aquatic organisms remain unclear. In this study, the effects of Ca on the uptake of polyacrylate-coated hematite NPs (HemNPs) by the aquatic ciliate Tetrahymena thermophila were investigated. At all of the tested Ca concentrations, HemNPs were well dispersed in the experimental medium, excluding the possibility of Ca to influence HemNP bioaccumulation by aggregating the NPs. Instead, Ca was shown to induce the clathrin-mediated endocytosis and phagocytosis of HemNPs. Manipulation of the Ca speciation in the experimental medium as well as the influx and intracellular availability of Ca in T. thermophila indicated that HemNP uptake was regulated by the intracellular Ca level. The results of the proteomics analyses further showed that the binding of intracellular Ca to calmodulin altered the activity of proteins involved in clathrin-mediated endocytosis (calcineurin and dynamin) and phagocytosis (actin). Overall, the biologically inductive effects of Ca on NP accumulation in aquatic organisms should be considered when evaluating the environmental risks of NPs.
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Affiliation(s)
- Chao Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210023, China
| | - Wen-Bo Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210023, China
| | - Yue-Yue Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210023, China
| | - Liuyan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210023, China
| | - Ai-Jun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210023, China.
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Graciano León F, Vásquez Mori J, Reyes Avalos WE. La dureza total del agua afecta la muda, calcificación, crecimiento y supervivencia de Cryphiops caementarius (Palaemonidae). ACTA BIOLÓGICA COLOMBIANA 2021. [DOI: 10.15446/abc.v27n1.89933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
El objetivo de este estudio fue evaluar los efectos de diferentes niveles de dureza total del agua en la muda, calcificación del exoesqueleto, crecimiento y supervivencia de Cryphiops caementarius. Los camarones machos fueron colectados del río Pativilca (Lima, Perú) y cultivados en recipientes individuales dentro de acuarios (55 L). Se emplearon cuatro niveles de dureza total del agua (100, 200, 300 y 400 mg CaCO3 L-1), con tres repeticiones, respectivamente. Los camarones cultivados en agua con dureza de 300 mg L-1 tuvieron menor periodo de muda (26,7 días) y mayor frecuencia de mudas (tres mudas). El contenido de calcio del exoesqueleto del camarón incrementó (p < 0,05) de 25 a 31 % en agua con dureza de 100 y 400 mg L-1, respectivamente. El mayor grosor del exoesqueleto (144 µm en cefalotórax y 131 µm en abdomen) fue obtenido en agua con dureza de 400 mg L-1 y el menor grosor (93 µm en cefalotórax y abdomen) en 100 mg L-1. El crecimiento en longitud fue mayor (p < 0,05) en agua con durezas de 200 y 300 mg L-1. El crecimiento en peso fue similar (p > 0,05) entre tratamientos. La mayor supervivencia (> 94,4 %) se mantuvo en agua con durezas de hasta 300 mg L-1 y la menor supervivencia (77,8 %) fue con 400 mg L-1. La dureza total del agua de 200 y 300 mg L-1 es conveniente para el cultivo del camarón, pero dureza del agua mayor o menor a este rango afectan la muda, el crecimiento y la supervivencia por deficiencia o exceso de calcio acumulado, respectivamente en el exoesqueleto del camarón.
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An D, Husovic A, Ali L, Weddle E, Nagle L, Ahearn GA. Ocean acidification: synergistic inhibitory effects of protons and heavy metals on 45Ca uptake by lobster branchiostegite membrane vesicles. J Comp Physiol B 2019; 189:513-521. [PMID: 31317243 DOI: 10.1007/s00360-019-01227-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 06/11/2019] [Accepted: 07/01/2019] [Indexed: 11/28/2022]
Abstract
Previous work with isolated outer membrane vesicles of lobster branchiostegite epithelial cells has shown that 45Ca2+ uptake by these structures is significantly (p < 0.02) reduced by an incremental decrease in saline pH (increased proton concentration) and that this decrease is due to competitive inhibition between carrier-mediated transport of 45Ca2+ and hydrogen ions. The present paper extends these previous findings and describes the combined effects of pH and cationic heavy metals on branchiostegite uptake of 45Ca2+. Partially purified membrane vesicles of branchiostegite cells were produced by a homogenization/centrifugation method and were loaded with mannitol at pH 7.0. The time course of 1 mM 45Ca2+ uptake in a mannitol medium at pH 8.5 containing 100 µM verapamil (Ca2+ channel blocker) was hyperbolic and approached equilibrium at 30 min. This uptake was either significantly reduced (p < 0.05) by the addition of 5 µM Zn2+ or essentially abolished with the addition of 5 µM Cu2+. Increasing zinc concentrations (5-500 µM) reduced 1 mM 45Ca2+ uptake at pH 8.5 or 7.5 in a hyperbolic fashion with the remaining non-inhibited uptake due to apparent non-specific binding. Uptake of 1 mM 45Ca2+ at pH 8.5, 7.5, 7.5 + Zn2+, and 7.5 + Zn2+ + Cu2+ + Cd2+ in the presence of 100 µM verapamil displayed a stepwise reduction of 45Ca2+ uptake with the addition of each treatment until only non-specific isotope binding occurred with all cation inhibitors. 45Ca2+ influxes (15 s uptakes; 0.25-5.0 mM calcium + 100 µM verapamil) in the presence and absence of 10 µM Zn2+ were both hyperbolic functions of calcium concentration. The curve with Zn2+ displayed a transport Km twice that of the control (p < 0.05), while inhibitor and control curve Jmax values were not significantly different (p > 0.05), suggesting competitive inhibition between 45Ca2+ and Zn2+ influxes. Analysis of the relative inhibitory effects of increased proton or heavy metal interaction with 45Ca2+ uptake suggests that divalent metals may reduce the calcium transport about twice as much as a drop in pH, but together, they appear to abolish carrier-mediated transport.
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Affiliation(s)
- Dalen An
- Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA
| | - Aida Husovic
- Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA
| | - Laeequa Ali
- Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA
| | - Elizabeth Weddle
- Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA
| | - Lilian Nagle
- Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA
| | - Gregory A Ahearn
- Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA. .,, Jacksonville, USA.
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Ponzoni S. Manganese tissue accumulation and tyrosine hydroxylase immunostaining response in the Neotropical freshwater crab, Dilocarcinus pagei, exposed to manganese. INVERTEBRATE NEUROSCIENCE 2017; 17:5. [PMID: 28451884 DOI: 10.1007/s10158-017-0198-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 04/18/2017] [Indexed: 10/19/2022]
Abstract
Manganese (Mn) is an essential metal for the development and function of the mammalian brain; however, excess Mn accumulation may cause neurological abnormalities resembling Parkinson's disease due to reductions in brain dopamine levels. Because dopamine also regulates many functions in crustaceans, this study examined the effects of Mn accumulation in Dilocarcinus pagei, a Neotropical freshwater crab. Following a 72-h exposure to graded concentrations of MnCl2, Mn accumulation was assessed in several tissues. Glycaemia and the tyrosine hydroxylase (TH) immunostaining response were also examined as indicators of catecholaminergic function and catecholaminergic cell integrity, respectively. Tissue Mn accumulation was variable and occurred in the following order: gills > hepatopancreas > claw muscle > haemolymph. Exposure to 2 mM Mn reduced the gill levels of calcium, copper and iron, whereas Mn at all concentrations decreased zinc levels. All Mn-exposed animals showed lower copper levels in the hepatopancreas and haemolymph. Exposure to 2.0 mM Mn increased the haemolymph calcium. Mn exposure had no effect on glycaemia, whereas exposure to low Mn concentrations reduced the TH immunostaining response. Analysis of the central nervous system revealed the greatest Mn effect in the cerebral ganglion and the least effect in the abdominal ganglia. These results suggest the operation of an adaptive mechanism for tissue accumulation that could be responsible for the lack of an association between Mn concentrations and metal accumulation. The findings also suggest that Mn, calcium, iron and zinc share a transporter in gill cells and that Mn resistance is greater in the TH-positive cells of this crustacean than in mammalian cells.
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Affiliation(s)
- Silvia Ponzoni
- Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445, km 380, Campus Universitário, Londrina, PR, 86055-990, Brazil.
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Tan LY, Huang B, Xu S, Wei ZB, Yang LY, Miao AJ. TiO2 Nanoparticle Uptake by the Water Flea Daphnia magna via Different Routes is Calcium-Dependent. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:7799-7807. [PMID: 27359244 DOI: 10.1021/acs.est.6b01645] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Calcium plays versatile roles in aquatic ecosystems. In this study, we investigated its effects on the uptake of polyacrylate-coated TiO2 nanoparticles (PAA-TiO2-NPs) by the water flea (cladoceran) Daphnia magna. Particle distribution in these daphnids was also visualized using synchrotron radiation-based micro X-ray fluorescence spectroscopy, transmission electron microscopy, and scanning electron microscopy. At low ambient Ca concentrations in the experimental medium ([Ca]dis), PAA-TiO2-NPs were well dispersed and distributed throughout the daphnid; the particle concentration was highest in the abdominal zone and the gut, as a result of endocytosis and passive drinking of the nanoparticles, respectively. Further, Ca induced PAA-TiO2-NP uptake as a result of the increased Ca influx. At a high [Ca]dis, the PAA-TiO2-NPs formed micrometer-sized aggregates that were ingested by D. magna and concentrated only in its gut, independent of the Ca influx. Our results demonstrated the multiple effects of Ca on nanoparticle bioaccumulation. Specifically, well-dispersed nanoparticles were taken up by D. magna through endocytosis and passive drinking whereas the uptake of micrometer-sized aggregates relied on active ingestion.
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Affiliation(s)
- Ling-Yan Tan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, Jiangsu Province 210023, China
| | - Bin Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, Jiangsu Province 210023, China
| | - Shen Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, Jiangsu Province 210023, China
| | - Zhong-Bo Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, Jiangsu Province 210023, China
| | - Liu-Yan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, Jiangsu Province 210023, China
| | - Ai-Jun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing, Jiangsu Province 210023, China
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Taddei FG, Davanso TM, Castiglioni L, Herrera DR, Fransozo A, da Costa RC. Population structure, recruitment, and mortality of the freshwater crab Dilocarcinus pageiStimpson, 1861 (Brachyura, Trichodactylidae) in Southeastern Brazil. INVERTEBR REPROD DEV 2015. [DOI: 10.1080/07924259.2015.1081638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sá MG, Zanotto FP. Characterization of copper transport in gill cells of a mangrove crab Ucides cordatus. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 144-145:275-283. [PMID: 24211335 DOI: 10.1016/j.aquatox.2013.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/13/2013] [Accepted: 10/14/2013] [Indexed: 06/02/2023]
Abstract
The branchial epithelium of crustaceans is exposed to the environment and is the first site affected by metal pollution. The aim of this work was to characterize copper (Cu) transport using a fluorescent dye, Phen Green, in gill cells of a hypo-hyper-regulator mangrove crab Ucides cordatus. The results showed that added extracellular CuCl2 (0, 0.025, 0.150, 0.275, 0.550 and 1.110 μM) showed typical Michaelis-Menten transport for Cu in anterior and posterior gill cells (Vmax for anterior and posterior gills: 0.41 ± 0.12 and 1.76 ± 0.27 intracellular Cu in μM × 22.10(4)cells(-1)× 300 s(-1) respectively and Km values: 0.44 ± 0.04 and 0.32 ± 0.13 μM, respectively). Intracellular Cu was significantly higher for posterior gill cells compared to anterior gill cells, suggesting differential accumulation for each gill type. Extracellular Ca at 20mM decreased cellular Cu transport for both anterior and posterior gill cells. Nifedipine and verapamil, calcium channel inhibitors from plasma membrane, decreased Cu transport and affected Km for both gills. These results could be due to a competition between Cu and Ca. Amiloride, a Na/Ca exchanger inhibitor, as well as bafilomycin, a proton pump inhibitor, caused a decrease of intracellular Cu compared to control. Ouabain and KB-R 7943, acting on Na homeostasis, similarly decreased intracellular Cu in both gill cells. Besides that, gill cells exposed to ATP and Cu simultaneously, showed an increase in intracellular copper, which was inhibited by vanadate, an inhibitor of P-type ATPase. These results suggest either the presence of a Cu-ATPase in crab gill cells, responsible for Cu influx, or the effect of a change in electrochemical membrane potential that could also drive Cu to the gill cell interior. Caffeine increased intracellular Cu, suggesting that intracellular Ca could be affecting Cu uptake. Overall the results show that copper uptake in gill cells of crabs is regulated by intracellular Ca, Ca channels and by Na exchangers. This is the first report of Cu transport characterization in whole gill cells of crabs.
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Affiliation(s)
- M G Sá
- Biosciences Institute, Department of Physiology, University of São Paulo, Rua do Matão, Travessa 14, #101, São Paulo 05508-900, SP, Brazil
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Calcium transport in gill cells of Ucides cordatus, a mangrove crab living in variable salinity environments. Comp Biochem Physiol A Mol Integr Physiol 2013; 166:370-4. [DOI: 10.1016/j.cbpa.2013.07.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/05/2013] [Accepted: 07/09/2013] [Indexed: 11/21/2022]
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Zanotto FP, Baptista BB. ATP pulse and calcium homeostasis in cells from hepatopancreas of Dilocarcinus pagei, a freshwater crab. Comp Biochem Physiol A Mol Integr Physiol 2010; 158:432-7. [PMID: 21130890 DOI: 10.1016/j.cbpa.2010.11.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2010] [Revised: 11/25/2010] [Accepted: 11/26/2010] [Indexed: 11/27/2022]
Abstract
Calcium (Ca) is critical for crustaceans due to their molting cycle and its presence in the carapace as calcium carbonate, apart from the usual functions of Ca, such as cell signalling. Ca transport in Dilocarcinus pagei, a freshwater crab, was studied in isolated cells from hepatopancreas to further characterize Ca transport mechanisms in these crabs. Cells were isolated and loaded with Fluo-3, a calcium fluorescent dye. Three different cell treatments were performed: Group 1 cells were Ca free during cell dissociation, and calcium was present (at 1 mM) for fluorescence cell loading and transport experiments (FC); Group 2 cells were calcium free during cell dissociation and for transport experiments, but not during cell loading (LC); and Group 3 cells were Ca free during cell dissociation, cell loading and transport experiments (WC). Intracellular Ca was recorded through time after ATP was added to the cells and ATP caused an increase in Ca efflux within 30s in all cells. WC cells showed the smallest Ca efflux compared to the other cells, probably because it was intracellularly Ca "depleted". Vanadate and amiloride decreased the Ca efflux when ATP was added to the cells, while verapamil did not cause any effect in Ca efflux, confirming the presence of a Ca(2+)-ATPase sensitive to vanadate in hepatopancreas of D. pagei. In a different set of experiments, cells were also exposed to a Ca pulse of 1 and 10mM during 180 s. 10mM Ca increased intracellular Ca compared to 1mM, and the increase was not recovered during the experimental time. Additionally, Ca influx was reduced by verapamil and amiloride, but not completely. The results suggest that Ca influx probably occurs through an undefined exchanger, apart from Ca channels (verapamil sensitive) and electrogenic 1 Na(+)(1H(+))/1 Ca(2+) exchanger (amiloride-sensitive). Similarities between freshwater and seawater crabs, lobsters and crayfish in relation to plasma membrane Ca transporters, although the environment where they live is quite diverse, suggest that universal mechanisms for Ca homeostasis are widespread among crustaceans.
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Affiliation(s)
- F P Zanotto
- Universidade Presbiteriana Mackenzie, Centro de Ciências Biológicas e da Saúde, Rua da Consolação 930, São Paulo 01302-907 SP, Brasil.
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Intra- and extracellular osmotic regulation in the hololimnetic Caridea and Anomura: a phylogenetic perspective on the conquest of fresh water by the decapod Crustacea. J Comp Physiol B 2010; 181:175-86. [DOI: 10.1007/s00360-010-0522-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 09/17/2010] [Accepted: 09/24/2010] [Indexed: 01/20/2023]
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