Study on the Pulmonary Delivery System of Apigenin-Loaded Albumin Nanocarriers with Antioxidant Activity

Respiratory diseases are mainly derived from acute and chronic inflammation of the alveoli and bronchi. The pathophysiological mechanisms of pulmonary inflammation mainly arise from oxidative damage that could ultimately lead to acute lung injury. Apigenin (Api) is a natural polyphenol with prominen...

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Veröffentlicht in:Journal of aerosol medicine 2017-08, Vol.30 (4), p.274-288
Hauptverfasser: Pápay, Zsófia Edit, Kósa, Annamária, Böddi, Béla, Merchant, Zahra, Saleem, Imran Y, Zariwala, Mohammed Gulrez, Klebovich, Imre, Somavarapu, Satyanarayana, Antal, István
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container_end_page 288
container_issue 4
container_start_page 274
container_title Journal of aerosol medicine
container_volume 30
creator Pápay, Zsófia Edit
Kósa, Annamária
Böddi, Béla
Merchant, Zahra
Saleem, Imran Y
Zariwala, Mohammed Gulrez
Klebovich, Imre
Somavarapu, Satyanarayana
Antal, István
description Respiratory diseases are mainly derived from acute and chronic inflammation of the alveoli and bronchi. The pathophysiological mechanisms of pulmonary inflammation mainly arise from oxidative damage that could ultimately lead to acute lung injury. Apigenin (Api) is a natural polyphenol with prominent antioxidant and anti-inflammatory properties in the lung. Inhalable formulations that consist of nanoparticles (NPs) have several advantages over other administration routes, and therefore, this study investigated the application of apigenin-loaded bovine serum albumin nanoparticles (BSA-Api-NPs) for pulmonary delivery. Dry powder formulations of BSA-Api-NPs were prepared by spray drying and characterized by laser diffraction particle sizing, scanning electron microscopy, differential scanning calorimetry, and powder X-ray diffraction. The influence of dispersibility enhancers (lactose monohydrate and l-leucine) on the in vitro aerosol deposition using a next-generation impactor was investigated in comparison to excipient-free formulation. The dissolution of Api was determined in simulated lung fluid by using the Franz cell apparatus. The antioxidant activity was determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH ) free radical scavenging assay. The encapsulation efficiency and the drug loading were measured to be 82.61% ± 4.56% and 7.51% ± 0.415%. The optimized spray drying conditions were suitable to produce particles with low residual moisture content. The spray-dried BSA-Api-NPs possessed good aerodynamic properties due to small and wrinkled particles with low mass median aerodynamic diameter, high emitted dose, and fine particle fraction. The aerodynamic properties were enhanced by leucine and decreased by lactose, however, the dissolution was reversely affected. The DPPH assay confirmed that the antioxidant activity of encapsulated Api was preserved. This study provides evidence to support that albumin nanoparticles are suitable carriers of Api and the use of traditional or novel excipients should be taken into consideration. The developed BSA-Api-NPs are a novel delivery system against lung injury with potential antioxidant activity.
doi_str_mv 10.1089/jamp.2016.1316
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The pathophysiological mechanisms of pulmonary inflammation mainly arise from oxidative damage that could ultimately lead to acute lung injury. Apigenin (Api) is a natural polyphenol with prominent antioxidant and anti-inflammatory properties in the lung. Inhalable formulations that consist of nanoparticles (NPs) have several advantages over other administration routes, and therefore, this study investigated the application of apigenin-loaded bovine serum albumin nanoparticles (BSA-Api-NPs) for pulmonary delivery. Dry powder formulations of BSA-Api-NPs were prepared by spray drying and characterized by laser diffraction particle sizing, scanning electron microscopy, differential scanning calorimetry, and powder X-ray diffraction. The influence of dispersibility enhancers (lactose monohydrate and l-leucine) on the in vitro aerosol deposition using a next-generation impactor was investigated in comparison to excipient-free formulation. The dissolution of Api was determined in simulated lung fluid by using the Franz cell apparatus. The antioxidant activity was determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH ) free radical scavenging assay. The encapsulation efficiency and the drug loading were measured to be 82.61% ± 4.56% and 7.51% ± 0.415%. The optimized spray drying conditions were suitable to produce particles with low residual moisture content. The spray-dried BSA-Api-NPs possessed good aerodynamic properties due to small and wrinkled particles with low mass median aerodynamic diameter, high emitted dose, and fine particle fraction. The aerodynamic properties were enhanced by leucine and decreased by lactose, however, the dissolution was reversely affected. The DPPH assay confirmed that the antioxidant activity of encapsulated Api was preserved. 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subjects Administration, Inhalation
Aerodynamic properties
Aerosols
Albumins - chemistry
Alveoli
Anti-inflammatory agents
Antioxidants
Antioxidants - administration & dosage
Antioxidants - pharmacokinetics
Antioxidants - pharmacology
Apigenin - administration & dosage
Apigenin - pharmacokinetics
Apigenin - pharmacology
Bovine serum albumin
Bronchi
Bronchus
Calorimetry
Calorimetry, Differential Scanning
Chemistry, Pharmaceutical - methods
Differential scanning calorimetry
Diffraction
Dispersions
Dissolution
Drug Carriers - chemistry
Drug Compounding - methods
Drug Delivery Systems
Drug dosages
Drug Liberation
Drying
Electron microscopy
Encapsulation
Enhancers
Excipients
Excipients - chemistry
Food
Formulations
Free Radical Scavengers - administration & dosage
Free Radical Scavengers - pharmacokinetics
Free Radical Scavengers - pharmacology
Free radicals
Health technology assessment
Heat measurement
Inflammation
Lactose
Leucine
Lung - metabolism
Lungs
Microscopy
Microscopy, Electron, Scanning
Moisture content
Morphology
Nanoparticles
Oxidative stress
Particle Size
Particulates
Permeability
Pharmaceutical sciences
Pharmacy
Powder
Respiratory diseases
Scanning electron microscopy
X-Ray Diffraction
title Study on the Pulmonary Delivery System of Apigenin-Loaded Albumin Nanocarriers with Antioxidant Activity
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