Antimicrobial and bacteria-releasing multifunctional surfaces: Oligo (p-phenylene-ethynylene)/poly (N-isopropylacrylamide) films deposited by RIR-MAPLE

Yu, Qian; Ge, Wangyao; Atewologun, Ayomide; López, Gabriel P.

doi:10.1016/j.colsurfb.2014.12.043

Cited by 41 publications

(37 citation statements)

References 47 publications

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“…Above the LCST, the material was antimicrobial, killing up to 62% bacteria. Below the LCST, the material was protein‐repellent and released up to 62% of attached dead bacteria . When the system was additionally loaded with low molecular weight quaternary ammonium salts, the killing efficiency against E. coli and S. aureus was between 80–85%, and it released 65–80% of the attached bacteria .…”

Section: Regeneration Of Antimicrobial Activity Of Polymer Surfacesmentioning

confidence: 99%

“…Below the LCST, the material was protein-repellent and released up to 62% of attached dead bacteria. [94,130] When the system was additionally loaded with low molecular weight quaternary ammonium salts, the killing efficiency against E. coli and S. aureus was between 80-85%, and it released 65-80% of the attached bacteria. [131] Similar effects were obtained with release systems consisting of nano-patterned PNIPAM brushes and quaternary ammonium salts, [132] or PNIPAM with lysozyme.…”

Section: Regeneration Of Antimicrobial Activity Of Polymer Surfacesmentioning

confidence: 99%

See 1 more Smart Citation

Polymer‐Based Surfaces Designed to Reduce Biofilm Formation: From Antimicrobial Polymers to Strategies for Long‐Term Applications

Riga¹,

Vöhringer²,

Widyaya³

et al. 2017

Macromol. Rapid Commun.

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Contact-active antimicrobial polymer surfaces bear cationic charges and kill or deactivate bacteria by interaction with the negatively charged parts of their cell envelope (lipopolysaccharides, peptidoglycan, and membrane lipids). The exact mechanism of this interaction is still under debate. While cationic antimicrobial polymer surfaces can be very useful for short-term applications, they lose their activity once they are contaminated by a sufficiently thick layer of adhering biomolecules or bacterial cell debris. This layer shields incoming bacteria from the antimicrobially active cationic surface moieties. Besides discussing antimicrobial surfaces, this feature article focuses on recent strategies that were developed to overcome the contamination problem. This includes bifunctional materials with simultaneously presented antimicrobial and protein-repellent moieties; polymer surfaces that can be switched from an antimicrobial, cell-attractive to a cell-repellent state; polymer surfaces that can be regenerated by enzyme action; degradable antimicrobial polymers; and antimicrobial polymer surfaces with removable top layers.

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Section: Regeneration Of Antimicrobial Activity Of Polymer Surfacesmentioning

confidence: 99%

Section: Regeneration Of Antimicrobial Activity Of Polymer Surfacesmentioning

confidence: 99%

Polymer‐Based Surfaces Designed to Reduce Biofilm Formation: From Antimicrobial Polymers to Strategies for Long‐Term Applications

Riga¹,

Vöhringer²,

Widyaya³

et al. 2017

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…MAPLE technique [41][42][43][44][45][46][47][48][49][50][51][52] brings us a step forward to laser method by avoiding damage and photochemical decomposition of materials and it is now used for obtaining different types of thin films such as follows:…”

Section: The Limitation Of the Current Approaches And Laser Methods Pementioning

confidence: 99%

Smart Thermoresponsive Surfaces Based on pNIPAm Coatings and Laser Method for Biological Applications

Rusen¹,

Dinca²,

Mustăciosu³

et al. 2017

Modern Technologies for Creating the Thin-Film Systems and Coatings

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Various applications within last decades such as bacterially resistant surfaces, soft robotics, drug delivery systems, sensors and tissue engineering are poised to feature the importance of the ability to control bio-interfacial interactions. An enhanced attention is dedicated to designing smart stimuli-responsive interfaces for DNA, drug delivery, protein and cell based applications. Within this context, the thermoresponsive materials, especially poly(N-isopropylacrylamide) (pNIPAm) have been intensively used in tissue engineering applications for a controlled detachment of proteins and cells with a minimum of invasive effect on protein and cell structural conformation. The properties of smart bio-interfaces can be controlled by its composition and polymer architecture. Therefore, appropriate methods for obtaining controlled coatings are necessary. Laser methods were successfully used in the last decades for obtaining controlled organic and inorganic coatings for various types of applications, from electronics to tissue engineering. Among these, Matrix-Assisted Pulsed Laser Evaporation (MAPLE) technique bring us a step forward to other laser methods by avoiding damage and photochemical decomposition of materials. In this chapter we describe materials and approaches used for design of smart bio-interfaces aimed at controlling protein and cells behavior in vitro, focusing MAPLE method for tuning coatings characteristics in relation with biological response.

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“…Seedborne fungi collected from rice sample were detected by Blotter method (Yu et al, 2015). Sterile blotter papers with 9 cm diameter were placed on the Petri dishes.…”

Section: Isolation and Identification Of The Fungimentioning

confidence: 99%

Incidence of seed borne fungi in farm saved rice seeds, quality declared seed and certified seed in Morogoro Region in Tanzania

Kwaloe¹,

Msuya²,

Nchimbi‐Msolla³

et al. 2018

J. Plant Breed. Crop Sci.

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Rice (Oryza sativa L.) is the second most important food crop after maize in Tanzania. It faces many challenges like diseases, pests and physical damages, which reduce the seed quality. This article identified microorganisms and the district where they occurred. 13 fungal species comprising of 11 pathogenic and 2 saprophytic fungi were detected and the incidence level varied among sample. Mvomero District showed the highest incidence recorded (64.5%) for sample collected from Hembeti and Dakawa/Msufini villages. In Kilombero, the fungal specie which detected highest incidence was Fusarium equiseti (31%) followed by Fusarium moniliforme (28.5%). Verticillium cinnabarinum and Curvularia inaequalis had the least incidence of 1 and 1%, respectively. The study recommends that before planting season, seeds should be tested to minimize spread of fungal species.

show abstract

Antimicrobial and bacteria-releasing multifunctional surfaces: Oligo (p-phenylene-ethynylene)/poly (N-isopropylacrylamide) films deposited by RIR-MAPLE

Cited by 41 publications

References 47 publications

Polymer‐Based Surfaces Designed to Reduce Biofilm Formation: From Antimicrobial Polymers to Strategies for Long‐Term Applications

Polymer‐Based Surfaces Designed to Reduce Biofilm Formation: From Antimicrobial Polymers to Strategies for Long‐Term Applications

Smart Thermoresponsive Surfaces Based on pNIPAm Coatings and Laser Method for Biological Applications

Incidence of seed borne fungi in farm saved rice seeds, quality declared seed and certified seed in Morogoro Region in Tanzania

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