Search results for "Pseudomonas aeruginosa infection"

showing 3 items of 3 documents

Polyanion–tobramycin nanocomplexes into functional microparticles for the treatment of Pseudomonas aeruginosa infections in cystic fibrosis

2016

Aim: Efficacy of antibiotics in cystic fibrosis (CF) is compromised by the poor penetration through mucus barrier. This work proposes a new ‘nano-into-micro’ approach, used to obtain a combinatorial effect: achieve a sustained delivery of tobramycin and overcome mucus barrier. Methods: Mannitol microparticles (MPs) were loaded with a tobramycin polymeric nanocomplex and characterized in presence of CF artificial mucus. Results & discussion: MPs are able to alter the rheological properties of CF artificial mucus, enhancing drug penetration into it and allowing a prolonged drug release. MPs resulted to be effective in Pseudomonas aeruginosa infections if compared with free tobramycin. Co…

Pseudomonas aeruginosa infectionCystic FibrosisPolymersmedicine.drug_classAntibioticsBiomedical EngineeringMedicine (miscellaneous)Bioengineering02 engineering and technologyDevelopmentBiologySettore BIO/19 - Microbiologia Generalenano into micro strategyCystic fibrosisCell LineNanocompositesMicrobiology03 medical and health sciences0302 clinical medicineAntibiotic resistancePseudomonas aeruginosa InfectionsmedicineTobramycinHumansMannitolPseudomonas InfectionsGeneral Materials ScienceDrug CarriersEpithelial CellsPenetration (firestop)021001 nanoscience & nanotechnologymedicine.diseasePolyelectrolytesMucusAnti-Bacterial AgentsDrug LiberationMucusmicroparticle030228 respiratory systemSettore CHIM/09 - Farmaceutico Tecnologico Applicativocystic fibrosis artificial mucuPseudomonas aeruginosaTobramycinMannitol0210 nano-technologyαβ-poly(N-2-hydroxyethyl)-DL-aspartamidespray dryermedicine.drugNanomedicine
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Nano into Micro Formulations of Tobramycin for the Treatment of Pseudomonas aeruginosa Infections in Cystic Fibrosis.

2017

Here, nano into micro formulations (NiMs) of tobramycin for the treatment of Pseudomonas aeruginosa airway infections in cystic fibrosis (CF) are described. NiMs were produced by spray drying a solution containing polymers or sugars and a nanometric polyanion–tobramcyin complex (PTC), able to achieve a prolonged antibiotic release. NiMs properties were compared to TOBIPodhaler(Novartis), the only one commercially available dry powder inhalatory formulation based on porous microparticles. Produced NiMs showed adequate characteristics for pulmonary administration, as spherical shape, micrometric size, and high cytocompatibility toward human bronchial epithelial cells. Contrarily to TOBIPodhal…

Tobramycin Cystic Fibrosis Artificial Mucus (CF-AM) αβ-poly-(N-2-hydroxyethyl)-DL-aspartamide (PHEA) ion pair complex nano into micro strategy Pseudomonas aeruginosa infections biofilmPolymers and PlasticsCystic FibrosisPolymersChemistry PharmaceuticalBioengineeringBronchi02 engineering and technologymedicine.disease_causeCystic fibrosisMicrobiologyBiomaterials03 medical and health sciences0302 clinical medicineDrug Delivery SystemsNano-Materials ChemistrymedicineTobramycinHumansPseudomonas InfectionsParticle SizeRespiratory Tract InfectionsCells CulturedDrug CarriersPseudomonas aeruginosaChemistryBiofilmDry Powder InhalersEpithelial Cells021001 nanoscience & nanotechnologyAntimicrobialmedicine.diseaseMucusPolyelectrolytesAnti-Bacterial Agents030228 respiratory systemSettore CHIM/09 - Farmaceutico Tecnologico ApplicativoSpray dryingBiofilmsDelayed-Action PreparationsPseudomonas aeruginosaTobramycinNanoparticles0210 nano-technologymedicine.drugBiomacromolecules
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Nanometric ion pair complexes of tobramycin forming microparticles for the treatment of Pseudomonas aeruginosa infections in cystic fibrosis

2019

Abstract Sustained pulmonary delivery of tobramycin from microparticles composed of drug/polymer nanocomplexes offers several advantages against traditional delivery methods. Namely, in patients with cystic fibrosis, microparticle delivery can protect the tobramycin being delivered from strong mucoadhesive interactions, thus avoiding effects on its diffusion toward the infection site. Polymeric ion-pair complexes were obtained starting from two synthetic polyanions, through impregnation of their solid dissociated forms with tobramycin in aqueous solution. The structure of these polymeric systems was characterized, and their activities were examined against various biofilm-forming Pseudomona…

Pseudomonas aeruginosa infectionpseudomonas aeruginosa infectionsBiocompatibilityCystic FibrosisαPharmaceutical Science02 engineering and technologymedicine.disease_cause030226 pharmacology & pharmacyCystic fibrosisCell Line03 medical and health sciences0302 clinical medicineIon-pair complexmedicineTobramycinHumansPseudomonas InfectionsMicroparticleαβ-Poly-(N-2-hydroxyethyl)-dl-aspartamide (PHEA)β-Poly-(N-2-hydroxyethyl)-dl-aspartamide (PHEA)chemistry.chemical_classificationDrug CarriersAqueous solutionPseudomonas aeruginosaBiofilms; Cystic fibrosis artificial mucus (CF-AM); Ion-pair complex; Pseudomonas aeruginosa infections; Tobramycin; α; β-Poly-(N-2-hydroxyethyl)-dl-aspartamide (PHEA)BiofilmBiofilmPolymerBiofilms; cystic fibrosis artificial mucus (CF-AM); Ion-pair complex; pseudomonas aeruginosa infections; Tobramycin; αβ-Poly-(N-2-hydroxyethyl)-dl-aspartamide (PHEA)021001 nanoscience & nanotechnologymedicine.diseaseAnti-Bacterial AgentsMucuschemistryBiofilmsPseudomonas aeruginosaBiophysicsTobramycinNanoparticlescystic fibrosis artificial mucus (CF-AM)0210 nano-technologyPeptidesmedicine.drug
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