- Poly(anhydride-ester) and poly(N-vinyl-2-pyrrolidone) blends: salicylic acid-releasing blends with hydrogel-like properties that reduce inflammation.
Poly(anhydride-ester) and poly(N-vinyl-2-pyrrolidone) blends: salicylic acid-releasing blends with hydrogel-like properties that reduce inflammation.
Macromolecular bioscience (2014-10-22)
Michelle A Ouimet, Renata Fogaça, Sabrina S Snyder, Sameer Sathaye, Luiz H Catalani, Darrin J Pochan, Kathryn E Uhrich
PMID25333420
ABSTRACT
Polymers such as poly(N-vinyl-2-pyrrolidone) (PVP) have been used to prepare hydrogels for wound dressing applications but are not inherently bioactive. For enhanced healing, PVP was blended with salicylic acid-based poly(anhydride-esters) (SAPAE) and shown to exhibit hydrogel properties upon swelling. In vitro release studies demonstrated that the chemically incorporated drug (SA) was released from the polymer blends over 3-4 d in contrast to 3 h, and that blends of higher PVP content displayed greater swelling values and faster SA release. The polymer blends significantly the inflammatory cytokine, TNF-α, in vitro without negative effects.
MATERIALS
Product Number
Brand
Product Description
Sigma-Aldrich
Dimethyl sulfoxide, meets EP testing specifications, meets USP testing specifications
Sigma-Aldrich
Dimethyl sulfoxide, Hybri-Max™, sterile-filtered, BioReagent, suitable for hybridoma, ≥99.7%
Dimethyl sulfoxide, European Pharmacopoeia (EP) Reference Standard
Supelco
Residual Solvent - Chloroform, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Dimethyl sulfoxide, sterile-filtered, BioPerformance Certified, meets EP, USP testing specifications, suitable for hybridoma
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8-Octanoyloxypyrene-1,3,6-trisulfonic acid trisodium salt, suitable for fluorescence, ≥90% (HPCE)
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Dichloromethane, biotech. grade, 99.9%, contains 40-150 ppm amylene as stabilizer
Sigma-Aldrich
Dichloromethane, puriss., meets analytical specification of Ph. Eur., NF, ≥99% (GC)