Silver Iodide Nanoparticles as an Antibiofilm Agent—A Case Study on Gram-Negative Biofilm-Forming Bacteria

Kannan, Marikani; Rajarathinam, K; Venkatesan, S.; Dheeba, B.; Maniraj, Ayyan

doi:10.1016/b978-0-323-46152-8.00019-6

Cited by 7 publications

(7 citation statements)

References 132 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Synthesized nanoparticles (NPs) are currently proposed as a new generation of antimicrobial, antiviral antiparasitic and antifungal agents (Shahverdi et al 2007;Sondi and Salopek-Sondi 2004). Regarding the previously reported activity against parasitic organisms, silver nanoparticles have been widely tested including reports of their activity on hematophagous vectors such as Anopheles sp., Culex sp., Haemaphysalis sp.…”

Section: Introductionmentioning

confidence: 99%

Tannic acid-modified silver nanoparticles as a novel therapeutic agent against Acanthamoeba

et al. 2018

View full text Add to dashboard Cite

Free-living amoebae belonging to Acanthamoeba genus are widely distributed protozoans which are able to cause infection in humans and other animals such as keratitis and encephalitis. Acanthamoeba keratitis is a vision-threatening corneal infection with currently no available fully effective treatment. Moreover, the available therapeutic options are insufficient and are very toxic to the eye. Therefore, there is an urgent need for the development of more effective anti-amoebic agents. Nanotechnology approaches have been recently reported to be useful for the elucidation antimicrobial, antiviral, antifungal and antiprotozoal activities and thus, they could be a good approach for the development of anti-Acanthamoeba agents. Therefore, this study was aimed to explore the activity and cytotoxicity of tannic acid-modified silver nanoparticles, pure silver nanoparticles and pure gold nanoparticles against clinical strains of Acanthamoeba spp. The obtained results showed a significant anti-amoebic effect of the tannic acid-modified silver nanoparticles which also presented low cytotoxicity. Moreover, tannic acid-modified silver nanoparticles were well absorbed by the trophozoites and did not induce encystation. On the other hand, pure silver nanoparticles were only slightly active against the trophozoite stage and pure gold nanoparticles did not show any activity. In conclusion and based on the observed results, silver nanoparticle conjugation with tannic acid may be considered as potential agent against Acanthamoeba spp.

show abstract

Section: Introductionmentioning

confidence: 99%

Tannic acid-modified silver nanoparticles as a novel therapeutic agent against Acanthamoeba

et al. 2018

View full text Add to dashboard Cite

show abstract

“…This characteristic is explored in products such as Ag nanocomposites used to remove iodide from aqueous solutions and chitosan oligosaccharide lactate-capped AgNPs to remove iodide from environmental and biological samples . Biosynthesized silver iodide nanoparticles are also used with antimicrobial purpose . However, nothing is known about the interaction between iodide and silver in the gastrointestinal tract, but the formation of complexes is possible.…”

Section: Discussionmentioning

confidence: 99%

“…88 Biosynthesized silver iodide nanoparticles are also used with antimicrobial purpose. 89 However, nothing is known about the interaction between iodide and silver in the gastrointestinal tract, but the formation of complexes is possible. Iodide being complexed to AgNP will not be transported by NIS, increasing its fecal excretion and reducing its serum levels.…”

Section: ■ Discussionmentioning

confidence: 99%

Proteomic Profiles of Thyroid Gland and Gene Expression of the Hypothalamic–Pituitary–Thyroid Axis Are Modulated by Exposure to AgNPs during Prepubertal Rat Stages

Oliveira

Cavallin

Corrêa

et al. 2020

Chem. Res. Toxicol.

View full text Add to dashboard Cite

Silver nanoparticles (AgNPs) have potent antimicrobial activity and, for this reason, are incorporated into a variety of products, raising concern about their potential risks and impacts on human health and the environment. The developmental period is highly dependent on thyroid hormones (THs), and puberty is a sensitive period, where changes in the hormonal environment may have permanent effects. We evaluated the hypothalamic–pituitary (HP)–thyroid axis after exposure to low doses of AgNPs using a validated protocol to assess pubertal development and thyroid function in immature male rats. For stimulatory events of the HP–thyroid axis, we observed an increase in the expression of Trh mRNA and serum triiodothyronine. Negative feedback reduced the hypothalamic expression of Dio2 mRNA and increased the expression of Thra1, Thra2, and Thrb2 mRNAs. In the pituitary, there was a reduced expression of Mct-8 mRNA and Dio2 mRNA. For peripheral T3-target tissues, a reduced expression of Mct-8 mRNA was observed in the heart and liver. An increased expression of Dio3 mRNA was observed in the heart and liver, and an increased expression of Thrb2 mRNA was observed in the liver. The quantitative proteomic profile of the thyroid gland indicated a reduction in cytoskeletal proteins (Cap1, Cav1, Lasp1, Marcks, and Tpm4; 1.875 μg AgNP/kg) and a reduction in the profile of chaperones (Hsp90aa1, Hsp90ab1, Hspa8, Hspa9, P4hb) and proteins that participate in the N-glycosylation process (Ddost, Rpn1 and Rpn2) (15 μg AgNP/kg). Exposure to low doses of AgNPs during the window of puberty development affects the regulation of the HP–thyroid axis with further consequences in thyroid gland physiology.

show abstract

“…Silver iodides are widely employed in cloud seeding [ 1 ], contrast agents [ 2 ], thermo-electrical batteries [ 3 ], and medicines [ 4 ]. The structure of silver iodides has been demonstrated to be temperature and size dependent.…”

Section: Introductionmentioning

confidence: 99%

Rock-salt and helix structures of silver iodides under ambient conditions

Huang

Zhang

et al. 2019

National Science Review

View full text Add to dashboard Cite

Many different phase structures have been discovered for silver iodides. The β and γ phases were found to be the most common ones at ambient conditions, while the rock-salt phase was found to be stable under pressures between 400 MPa and 11.3 GPa. Recently, the α phase was demonstrated to be stable under ambient conditions when the particle sizes were reduced to below 10 nm. However, no other phase has been reported to be stable for silver iodides under ambient conditions. Rock-salt and helix structures have been found to be stable under ambient conditions in this study. The structures have been characterized by elemental mapping, Raman scattering, and high-resolution transmission electron microscopy. The stabilities of these structures were also confirmed by molecular dynamics and density functional theory.

show abstract

Silver Iodide Nanoparticles as an Antibiofilm Agent—A Case Study on Gram-Negative Biofilm-Forming Bacteria

Cited by 7 publications

References 132 publications

Tannic acid-modified silver nanoparticles as a novel therapeutic agent against Acanthamoeba

Tannic acid-modified silver nanoparticles as a novel therapeutic agent against Acanthamoeba

Proteomic Profiles of Thyroid Gland and Gene Expression of the Hypothalamic–Pituitary–Thyroid Axis Are Modulated by Exposure to AgNPs during Prepubertal Rat Stages

Rock-salt and helix structures of silver iodides under ambient conditions

Contact Info

Product

Resources

About