title: Evaluation of synthetic zeolites as oral delivery vehicle for anti-inflammatory drugs.
abstract: OBJECTIVE
  In this research, zeolite X and zeolite Y were used as vehicle to prepare intestine targeted oral delivery systems of indomethacin and ibuprofen.
  
  
  METHODS
  A soaking procedure was implemented to encapsulate indomethacin or ibuprofen within synthetic zeolites. Gravimetric methods and IR spectra of prepared formulations were used to assess drug loading efficiencies into zeolite structures. Scanning Electron Microscopy (SEM) was also utilized to determine morphologies changes in synthetic zeolites after drug loading. At the next stage, dissolution studies were used to predict the in vivo performance of prepared formulations at HCl 0.1 N and PBS pH 6.5 as simulated gastric fluid (SGF) and simulated intestine fluid (SIF), respectively.
  
  
  RESULTS
  Drug loadings of prepared formulations was determined between 24-26 % w/w. Dissolution tests at SGF were shown that zeolites could retain acidic model drugs in their porous structures and can be able to limit their release into the stomach. On the other hand, all prepared formulations completely released model drugs during 3 hr in simulated intestine fluid.
  
  
  CONCLUSIONS
  Obtained results indicated zeolites could potentially be able to release indomethacin and ibuprofen in a sustained and controlled manner and reduced adverse effects commonly accompanying oral administrations of NSAIDs.
authors: Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran ; Department of Pharmaceutics, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
authors: Elham
authors: E
authors: Khodaverdi
authors: Student Research Committee, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
authors: Reza
authors: R
authors: Honarmandi
authors: Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
authors: Mona
authors: M
authors: Alibolandi
authors: Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
authors: Roxana Rafatpanah
authors: RR
authors: Baygi
authors: Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
authors: Farzin
authors: F
authors: Hadizadeh
authors: Department of Chemistry, Faculty of Science, Ferdowsi University, Mashhad, Iran.
authors: Gholamhossein
authors: G
authors: Zohuri
keywords: Controlled drug delivery-systems; Ibuprofen; Indomethacin; Zeolite