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Biocompatibility of adenoviral vectors in poly(vinyl chloride) tubing catheters with presence or absence of plasticizer di‐2‐ethylhexyl phthalate
Author(s) -
Bilbao Roberto,
Reay Daniel P.,
Koppanati Bhanu M.,
Clemens Paula R.
Publication year - 2004
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.20116
Subject(s) - phthalate , plasticizer , vinyl chloride , infectivity , biocompatibility , catheter , materials science , genetic enhancement , biomedical engineering , albumin , chemistry , surgery , medicine , biochemistry , virology , gene , copolymer , composite material , polymer , virus , metallurgy
Adenoviral (Ad) vectors feature attractive characteristics for gene therapy of a wide variety of diseases. In many cases, the Ad vector must be administered using catheters and other plastic medical devices. Although poly(vinyl chloride) is one of the most frequently used catheter materials, it is relatively rigid and requires the addition of a plasticizer such as di‐2‐ethylhexyl phthalate (DEHP) to increase its flexibility. In this study, we demonstrated that exposure to a DEHP‐containing catheter decreased the infectivity of Ad vectors but not the total particle number of the vector. Loss of Ad vector infectivity was directly related to the time of exposure to the DEHP‐containing catheter, but it was not due to simple leaching of the chemical from the plastic. The loss of Ad vector infectivity could be prevented by preflushing the tube with albumin. Careful consideration of the compatibility between gene therapy vectors and medical delivery devices will be critical to the success of human gene therapy applications. © 2004 Wiley Periodicals, Inc. J Biomed Mater Res 69A: 91–96, 2004