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Full-Text Articles in Medicine and Health Sciences

Bmp7 Gene Transfer Via Gold Nanoparticles Into Stroma Inhibits Corneal Fibrosis In Vivo, Ashish Tandon, Ajay Sharma, Jason T. Rodier, Alexander M. Klibanov, Frank G. Rieger, Rajiv R. Mohan Jan 2013

Bmp7 Gene Transfer Via Gold Nanoparticles Into Stroma Inhibits Corneal Fibrosis In Vivo, Ashish Tandon, Ajay Sharma, Jason T. Rodier, Alexander M. Klibanov, Frank G. Rieger, Rajiv R. Mohan

Pharmacy Faculty Articles and Research

This study examined the effects of BMP7 gene transfer on corneal wound healing and fibrosis inhibition in vivo using a rabbit model. Corneal haze in rabbits was produced with the excimer laser performing -9 diopters photorefractive keratectomy. BMP7 gene was introduced into rabbit keratocytes by polyethylimine-conjugated gold nanoparticles (PEI2- GNPs) transfection solution single 5-minute topical application on the eye. Corneal haze and ocular health in live animals was gauged with stereo- and slit-lamp biomicroscopy. The levels of fibrosis [a-smooth muscle actin (aSMA), F-actin and fibronectin], immune reaction (CD11b and F4/80), keratocyte apoptosis (TUNEL), calcification (alizarin red, vonKossa and osteocalcin), and …


Multifunctional Hydroxyapatite And Poly(D,L-Lactide-Co-Glycolide) Nanoparticles For The Local Delivery Of Cholecalciferol, Nenad Ignjatović, Vuk Uskoković, Zorica Ajduković, Dragan Uskoković Jan 2013

Multifunctional Hydroxyapatite And Poly(D,L-Lactide-Co-Glycolide) Nanoparticles For The Local Delivery Of Cholecalciferol, Nenad Ignjatović, Vuk Uskoković, Zorica Ajduković, Dragan Uskoković

Pharmacy Faculty Articles and Research

Cholecalciferol, vitamin D3, plays an important role in bone metabolism by regulating extracellular levels of calcium. Presented here is a study on the effects of the local delivery of cholecalciferol (D3) using nanoparticulate carriers composed of hydroxyapatite (HAp) and poly(D,L-lactide-co-glycolide) (PLGA). Multifunctional nanoparticulate HAp-based powders were prepared for the purpose of: (a) either fast or sustained, local delivery of cholecalciferol, and (b) the secondary, osteoconductive and defect-filling effect of the carrier itself. Two types of HAp-based powders with particles of narrowly dispersed sizes in the nano range were prepared and tested in this study: HAp nanoparticles as direct cholecalciferol delivery …


Self-Assembled Surfactant Cyclic Peptide Nanostructures As Stabilizing Agents, Dindyal Mandal, Rakesh Tiwari, Amir Nasrolahi Shirazi, Donghoon Oh, Guofeng Ye, Antara Banerjee, Arpita Yadav, Keykavous Parang Jan 2013

Self-Assembled Surfactant Cyclic Peptide Nanostructures As Stabilizing Agents, Dindyal Mandal, Rakesh Tiwari, Amir Nasrolahi Shirazi, Donghoon Oh, Guofeng Ye, Antara Banerjee, Arpita Yadav, Keykavous Parang

Pharmacy Faculty Articles and Research

A number of cyclic peptides including [FR](4), [FK](4), [WK](5), [CR](4), [AK](4), and [WR](n) (n = 3-5) containing L-amino acids were produced using solid-phase peptide synthesis. We hypothesized that an optimal balance of hydrophobicity and charge could generate self-assembled nanostructures in aqueous solution by intramolecular and/or intermolecular interactions. Among all the designed peptides, [WR](n) (n = 3-5) generated self-assembled vesicle-like nanostructures at room temperature as shown by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and/or dynamic light scattering (DLS). This class of peptides represents the first report of surfactant-like cyclic peptides that self-assemble into nanostructures. A plausible mechanistic insight into …