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Reduced Cell Attachment to poly(2-hydroxyethyl Methacrylate)-Coated Ventricular Catheters in Vitro

Reduced Cell Attachment to poly(2-hydroxyethyl Methacrylate)-Coated Ventricular Catheters in Vitro

Brian W Hanak, Chia-Yun Hsieh, William Donaldson, Samuel R Browd, Kenneth K S Lau, William Shain

J Biomed Mater Res B Appl Biomater. 2018 Apr;106(3):1268-1279.

PMID: 28631360

Abstract:

The majority of patients with hydrocephalus are dependent on ventriculoperitoneal shunts for diversion of excess cerebrospinal fluid. Unfortunately, these shunts are failure-prone and over half of all life-threatening pediatric failures are caused by obstruction of the ventricular catheter by the brain's resident immune cells, reactive microglia and astrocytes. Poly(2-hydroxyethyl methacrylate) (PHEMA) hydrogels are widely used for biomedical implants. The extreme hydrophilicity of PHEMA confers resistance to protein fouling, making it a strong candidate coating for ventricular catheters. With the advent of initiated chemical vapor deposition (iCVD), a solvent-free coating technology that creates a polymer in thin film form on a substrate surface by introducing gaseous reactant species into a vacuum reactor, it is now possible to apply uniform polymer coatings on complex three-dimensional substrate surfaces. iCVD was utilized to coat commercially available ventricular catheters with PHEMA. The chemical structure was confirmed on catheter surfaces using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. PHEMA coating morphology was characterized by scanning electron microscopy. Testing PHEMA-coated catheters against uncoated clinical-grade catheters in an in vitro hydrocephalus catheter bioreactor containing co-cultured astrocytes and microglia revealed significant reductions in cell attachment to PHEMA-coated catheters at both 17-day and 6-week time points. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1268-1279, 2018.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP25249165	Poly(2-hydroxyethyl methacrylate)		25249-16-5	Price

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