{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T22:52:27Z","timestamp":1777589547024,"version":"3.51.4"},"reference-count":20,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2020,8,1]],"date-time":"2020-08-01T00:00:00Z","timestamp":1596240000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Endourology"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:sec>\n                    <jats:title>Introduction:<\/jats:title>\n                    <jats:p>\n                      Encrustation of implanted urinary tract devices is associated with significant morbidity. Pellethane\n                      <jats:sup>\u00ae<\/jats:sup>\n                      is a polyether-based compound noted for its strength, porosity, and resistance to solvents. We assessed Pellethane thermoplastic polyurethane (TPU) with and without surface coatings 2-hydroxyethyl methacrylate (HEMA) and tetraethylene glycol dimethyl ether (TETRA) for the potential to resist encrustation in an artificial urine environment.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>\n                      Samples of Pellethane TPU, HEMA Pellethane TPU, TETRA Pellethane TPU, and hydrogel-coated ureteral stent (Cook\n                      <jats:sup>\u00ae<\/jats:sup>\n                      ) were suspended in a batch-flow model with an artificial urine solution (AUS). Every 48 hours for 90 days, 40% of the solution was replaced with fresh AUS. All samples were stored in a 37\n                      <jats:bold>\u00b0<\/jats:bold>\n                      C incubator. Subsequently, the samples were thoroughly dried for 48 hours before weighing. Scanning electron microscopy was used to assess the degree of encrustation. Nu-Attom Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to determine the precise compositions of the encrustation specifically with regard to calcium, magnesium, and phosphate.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>At the conclusion of the 90-day trial, the samples were analyzed, and the average mass changes were as follows: stent 63.78%, uncoated Pellethane TPU 11.50%, HEMA-coated Pellethane TPU 2.90%, and TETRA-coated Pellethane TPU 0.60%. Pellethane TPU products, and specifically those coated with HEMA and TETRA, exhibited less average mass increase and a lesser propensity to form encrustation than the traditional urinary tract stent. The mass increases noted on coated Pellethane devices were primarily ionic, whereas that of the stent was not.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Pellethane, particularly with an HEMA-based preventative coating, may serve as a favorable alternative to traditional urinary stent material, providing its improved resistance to encrustation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1089\/end.2020.0097","type":"journal-article","created":{"date-parts":[[2020,4,22]],"date-time":"2020-04-22T04:34:23Z","timestamp":1587530063000},"page":"868-873","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["Surface-Treated Pellethanes: Comparative Quantification of Encrustation in Artificial Urine Solution"],"prefix":"10.1177","volume":"34","author":[{"given":"Courtney M.","family":"Cottone","sequence":"first","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sherry","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yi Xi","family":"Wu","sequence":"additional","affiliation":[{"name":"Pharmaceutical Sciences, University of California, Irvine, Irvine, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kevin","family":"Guan","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Renai","family":"Yoon","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luke","family":"Limfueco","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tuyen","family":"Hoang","sequence":"additional","affiliation":[{"name":"Institute of Clinical and Translational Science, University of California, Irvine, Irvine, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Winston","family":"Ciridon","sequence":"additional","affiliation":[{"name":"Department of Bioengineering and Chemical Engineering, University of Washington, Seattle, Washington, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Buddy D.","family":"Ratner","sequence":"additional","affiliation":[{"name":"Department of Bioengineering and Chemical Engineering, University of Washington, Seattle, Washington, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kathleen R.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Physical Sciences, University of California, Irvine, Irvine, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roshan M.","family":"Patel","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaime","family":"Landman","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ralph V.","family":"Clayman","sequence":"additional","affiliation":[{"name":"Department of Urology, University of California, Irvine, Orange, CA, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,8,1]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1038\/nrurol.2014.340"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00240-011-0409-3"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1111\/joim.12220"},{"key":"e_1_3_3_5_2","unstructured":"Marois Y Guidoin R. Biocompatibility of Polyurethanes. In: Madame Curie Bioscience Database [Internet]. Austin TX: Landes Bioscience 2000\u20132013. Available from: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK6422"},{"key":"e_1_3_3_6_2","first-page":"55","article-title":"In-vitro antibacterial and anti-encrustation performance of silver-polytetrafluoroethylene nanocomposite coated urinary catheters","author":"Wang L","unstructured":"Wang L, , Zhang S, , Keatch R, , Corner G, , Nabi G, , Murdoch S, , Davidson F, , Zhao Q. In-vitro antibacterial and anti-encrustation performance of silver-polytetrafluoroethylene nanocomposite coated urinary catheters. J Hosp Infect, 103:55\u201363. doi: https:\/\/doi.org\/10.1016\/j.jhin.2019.02.012","journal-title":"J Hosp Infect"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1179\/1753555713Y.0000000088"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1080\/15321799208018377"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.3390\/polym11071202"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/jbm.a.32085"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s13369-017-2624-x"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/jbm.820260402"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.1021\/ma00065a001"},{"key":"e_1_3_3_14_2","first-page":"1197","article-title":"Nano-BaSO4: A novel antimicrobial additive tellethane","volume":"8","author":"Aninwene GE","year":"2013","unstructured":"Aninwene GE, , Stout D, , Yang Z, , Webster TJ. Nano-BaSO4: A novel antimicrobial additive tellethane. 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