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Poly(ethylene glycol) in drug delivery: pros and cons as well as potential alternatives

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Abstract
Poly(ethylene glycol) (PEG) is the most used polymer and also the gold standard for stealth polymers in the emerging field of polymer based drug delivery. The properties that account for the overwhelming use of PEG in biomedical applications are outlined in this Review. The first approved PEGylated products have already been on the market for 20 years. A vast amount of clinical experience has since been gained with this polymer—not only benefits, but possible side effects and complications have also been found. The areas that might need consideration and more intensive and careful examination can be divided into the following categories: hypersensitivity, unexpected changes in pharmacokinetic behavior, toxic side products, and an antagonism arising from the easy degradation of the polymer under mechanical stress as a result of its ether structure and its non-biodegradability, as well as the resulting possible accumulation in the body. These possible side effects will be discussed in this Review and alternative polymers will be evaluated.
Keywords
PEGalytion, drug delivery, biomedical materials, nanotechnology, poly(ethylene glycol), polymers, stealth effect, ACCELERATED BLOOD CLEARANCE, ELECTROLYTE LAVAGE SOLUTION, LOW-MOLECULAR-WEIGHT, AMPHIPHILIC DIBLOCK COPOLYMER, RING-OPENING POLYMERIZATION, ALLERGIC CONTACT-DERMATITIS, WATER-SOLUBLE POLYMERS, POLYETHYLENE-GLYCOL, IN-VIVO, HYPERBRANCHED POLYGLYCEROLS

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Chicago
Knop, Katrin, Richard Hoogenboom, Dagmar Fischer, and Ulrich S Schubert. 2010. “Poly(ethylene Glycol) in Drug Delivery: Pros and Cons as Well as Potential Alternatives.” Angewandte Chemie-international Edition 49 (36): 6288–6308.
APA
Knop, K., Hoogenboom, R., Fischer, D., & Schubert, U. S. (2010). Poly(ethylene glycol) in drug delivery: pros and cons as well as potential alternatives. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 49(36), 6288–6308.
Vancouver
1.
Knop K, Hoogenboom R, Fischer D, Schubert US. Poly(ethylene glycol) in drug delivery: pros and cons as well as potential alternatives. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION. 2010;49(36):6288–308.
MLA
Knop, Katrin, Richard Hoogenboom, Dagmar Fischer, et al. “Poly(ethylene Glycol) in Drug Delivery: Pros and Cons as Well as Potential Alternatives.” ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 49.36 (2010): 6288–6308. Print.
@article{1072197,
  abstract     = {Poly(ethylene glycol) (PEG) is the most used polymer and also the gold standard for stealth polymers in the emerging field of polymer based drug delivery. The properties that account for the overwhelming use of PEG in biomedical applications are outlined in this Review. The first approved PEGylated products have already been on the market for 20 years. A vast amount of clinical experience has since been gained with this polymer---not only benefits, but possible side effects and complications have also been found. The areas that might need consideration and more intensive and careful examination can be divided into the following categories: hypersensitivity, unexpected changes in pharmacokinetic behavior, toxic side products, and an antagonism arising from the easy degradation of the polymer under mechanical stress as a result of its ether structure and its non-biodegradability, as well as the resulting possible accumulation in the body. These possible side effects will be discussed in this Review and alternative polymers will be evaluated.},
  author       = {Knop, Katrin and Hoogenboom, Richard and Fischer, Dagmar and Schubert, Ulrich S},
  issn         = {1433-7851},
  journal      = {ANGEWANDTE CHEMIE-INTERNATIONAL EDITION},
  keyword      = {PEGalytion,drug delivery,biomedical materials,nanotechnology,poly(ethylene glycol),polymers,stealth effect,ACCELERATED BLOOD CLEARANCE,ELECTROLYTE LAVAGE SOLUTION,LOW-MOLECULAR-WEIGHT,AMPHIPHILIC DIBLOCK COPOLYMER,RING-OPENING POLYMERIZATION,ALLERGIC CONTACT-DERMATITIS,WATER-SOLUBLE POLYMERS,POLYETHYLENE-GLYCOL,IN-VIVO,HYPERBRANCHED POLYGLYCEROLS},
  language     = {eng},
  number       = {36},
  pages        = {6288--6308},
  title        = {Poly(ethylene glycol) in drug delivery: pros and cons as well as potential alternatives},
  url          = {http://dx.doi.org/10.1002/anie.200902672},
  volume       = {49},
  year         = {2010},
}

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