Sequestration of Alkyltin(IV) Compounds in Aqueous Solution: Formation, Stability, and Empirical Relationships for the Binding of Dimethyltin(IV) Cation by N‐ and O‐Donor Ligands

Casale, Agatino; Stefano, Concetta De; Manfredi, Giuseppe; Milea, Demetrio; Sammartano, Silvio

doi:10.1155/2009/219818

Cited by 14 publications

(3 citation statements)

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“…(b) Polyamines block one major vacuolar channel, and their accumulation decreases inward ion conductance at the vacuolar membrane to facilitate metal ion compartmentation 19 . (c) Polyamines being positively charged tend to bind to metals and nucleic acids for their stability and can also help in sequestration of metals 20 .…”

Section: Introductionmentioning

confidence: 99%

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

Manasi

Mohapatra

Rajesh

et al. 2017

Sci Rep

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In living systems, environmental stress due to biotic and abiotic factors triggers the production of myriad metabolites as a potential mechanism for combating stress. Among these metabolites are the small polycationic aliphatic amine molecules - polyamines, which are ubiquitous in all living organisms. In this work, we demonstrate a correlation between cellular concentration of three major polyamines (putrescine, spermidine and spermine) with lead exposure on bacteria for a period of 6–24 h. We report that indigenously isolated Halomonas sp. strain BVR 1 exhibits lead induced fluctuations in their cellular polyamine concentration. This response to lead occurs within 6 h post metal treatment. During the same time interval there was a surge in the growth of bacteria along with an enhancement in the putrescine levels. We conclude that in Halomonas sp. strain BVR 1, an early response is seen with respect to modulation of polyamines as a result of lead treatment and hypothesize that endogenous polyamines contribute towards scavenging lead in these bacteria.

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Section: Introductionmentioning

confidence: 99%

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

Manasi

Mohapatra

Rajesh

et al. 2017

Sci Rep

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“…Therefore, any PGM used in ASL-mimicking media may act as a sink for metal and lipid sources added to the medium. Any polyamines added to ASL-mimicking media could also sequester metal ions present in the medium [217]. Furthermore, the polycationic nature of polyamines can result in polyamine aggregation to extracellular DNA present in the growth medium [218], potentially limiting the uptake of polyamines by pathogens grown in ASL-mimicking environments.…”

Section: Airway Surface Liquid Component Interactionsmentioning

confidence: 99%

How Does Airway Surface Liquid Composition Vary in Different Pulmonary Diseases, and How Can We Use This Knowledge to Model Microbial Infections?

Walsh,

Bevan,

Harrison

2024

Microorganisms

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Growth environment greatly alters many facets of pathogen physiology, including pathogenesis and antimicrobial tolerance. The importance of host-mimicking environments for attaining an accurate picture of pathogen behaviour is widely recognised. Whilst this recognition has translated into the extensive development of artificial cystic fibrosis (CF) sputum medium, attempts to mimic the growth environment in other respiratory disease states have been completely neglected. The composition of the airway surface liquid (ASL) in different pulmonary diseases is far less well characterised than CF sputum, making it very difficult for researchers to model these infection environments. In this review, we discuss the components of human ASL, how different lung pathologies affect ASL composition, and how different pathogens interact with these components. This will provide researchers interested in mimicking different respiratory environments with the information necessary to design a host-mimicking medium, allowing for better understanding of how to treat pathogens causing infection in these environments.

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“…The pL 0.5 values were evaluated for all the systems, at different pH and ionic strength. The values were compared with those reported in previous papers, concerning the sequestering ability of carboxylates, amines, and thiolates. − …”

Section: Introductionmentioning

confidence: 99%

Binding Ability of Sodium Catechol Disulfonate (Tiron) toward Hg²⁺, CH₃Hg⁺, (CH₃)₃Sn⁺, and (CH₃)₂Sn²⁺ Cations

2012

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A potentiometric study on the interactions between catechol disulfonate (disodium 4,5-dihydroxybenzene-1,3-disulfonate, tiron) and Hg 2+ , CH 3 Hg + , (CH 3 ) 2 Sn 2+ , and (CH 3 ) 3 Sn + cations is reported in aqueous NaCl solution with ionic strength in the range (0 ≤ I ≤ 1) mol•L −1 and at a temperature of 298.15 K. In the presence of tiron, CH 3 Hg + and (CH 3 ) 3 Sn + form only the two species ML and MLH; Hg 2+ forms ML, MLH, and ML(OH) species; and (CH 3 ) 2 Sn 2+ forms ML, MLH, and ML 2 species. The interactions of tiron with Hg 2+ and (CH 3 ) 2 Sn 2+ are stronger than those with CH 3 Hg + and (CH 3 ) 3 Sn + . As an example, at the ionic strength I = 0.1 mol•L −1 , equilibrium constants for the formation of ML species are log β = 18.87, 17.076, 10.39, and 7.55, for M = Hg 2+ , (CH 3 ) 2 Sn 2+ , CH 3 Hg + , and (CH 3 ) 3 Sn + , respectively. On the basis of the speciation models proposed, the sequestering ability of tiron toward Hg 2+ , CH 3 Hg + , (CH 3 ) 2 Sn 2+ , and (CH 3 ) 3 Sn + was quantitatively evaluated by determining the concentration of the ligand able to complex half of the metal ion fraction. In the range 5 ≤ pH ≤ 8, the sequestering ability is high toward Hg 2+ and (CH 3 ) 2 Sn 2+ (at the (10 −11 to 10 −6 ) mol•L −1 level), fairly low toward CH 3 Hg + (at the 10 −3 mol•L −1 level), and very low toward (CH 3 ) 3 Sn + (at the 10 −1 mol•L −1 level).

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Sequestration of Alkyltin(IV) Compounds in Aqueous Solution: Formation, Stability, and Empirical Relationships for the Binding of Dimethyltin(IV) Cation by N‐ and O‐Donor Ligands

Cited by 14 publications

References 50 publications

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

How Does Airway Surface Liquid Composition Vary in Different Pulmonary Diseases, and How Can We Use This Knowledge to Model Microbial Infections?

Binding Ability of Sodium Catechol Disulfonate (Tiron) toward Hg²⁺, CH₃Hg⁺, (CH₃)₃Sn⁺, and (CH₃)₂Sn²⁺ Cations

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Sequestration of Alkyltin(IV) Compounds in Aqueous Solution: Formation, Stability, and Empirical Relationships for the Binding of Dimethyltin(IV) Cation by N‐ and O‐Donor Ligands

Cited by 14 publications

References 50 publications

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

How Does Airway Surface Liquid Composition Vary in Different Pulmonary Diseases, and How Can We Use This Knowledge to Model Microbial Infections?

Binding Ability of Sodium Catechol Disulfonate (Tiron) toward Hg2+, CH3Hg+, (CH3)3Sn+, and (CH3)2Sn2+ Cations

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Product

Resources

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Binding Ability of Sodium Catechol Disulfonate (Tiron) toward Hg²⁺, CH₃Hg⁺, (CH₃)₃Sn⁺, and (CH₃)₂Sn²⁺ Cations