{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T18:39:00Z","timestamp":1788892740458,"version":"build-2803163510"},"reference-count":32,"publisher":"American Society for Microbiology","issue":"8","license":[{"start":{"date-parts":[[2016,8,1]],"date-time":"2016-08-01T00:00:00Z","timestamp":1470009600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"name":"Fremantle Hospital Medical Research Foundation","award":["2014"],"award-info":[{"award-number":["2014"]}]},{"DOI":"10.13039\/501100000925","name":"Department of Health | National Health and Medical Research Council","doi-asserted-by":"publisher","award":["1047105"],"award-info":[{"award-number":["1047105"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Antimicrob Agents Chemother"],"published-print":{"date-parts":[[2016,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Dried blood spot (DBS) antibiotic assays can facilitate pharmacokinetic (PK)\/pharmacodynamic (PD) studies in situations where venous blood sampling is logistically difficult. We sought to develop, validate, and apply a DBS assay for rifampin (RIF), fusidic acid (FUS), and ciprofloxacin (CIP). These antibiotics are considered active against organisms in biofilms and are therefore commonly used for the treatment of infections associated with prosthetic implants. A liquid chromatography-mass spectroscopy DBS assay was developed and validated, including red cell partitioning and thermal stability for each drug and the rifampin metabolite desacetyl rifampin (Des-RIF). Plasma and DBS concentrations in 10 healthy adults were compared, and the concentration-time profiles were incorporated into population PK models. The limits of quantification for RIF, Des-RIF, CIP, and FUS in DBS were 15 \u03bcg\/liter, 14 \u03bcg\/liter, 25 \u03bcg\/liter, and 153 \u03bcg\/liter, respectively. Adjusting for hematocrit, red cell partitioning, and relative recovery, DBS-predicted plasma concentrations were comparable to measured plasma concentrations for each antibiotic (\n            <jats:italic>r<\/jats:italic>\n            &gt; 0.95;\n            <jats:italic>P<\/jats:italic>\n            &lt; 0.0001), and Bland-Altman plots showed no significant bias. The final population PK estimates of clearance, volume of distribution, and time above threshold MICs for measured and DBS-predicted plasma concentrations were comparable. These drugs were stable in DBSs for at least 10 days at room temperature and 1 month at 4\u00b0C. The present DBS antibiotic assays are robust and can be used as surrogates for plasma concentrations to provide valid PK and PK\/PD data in a variety of clinical situations, including therapeutic drug monitoring or studies of implant infections.\n          <\/jats:p>","DOI":"10.1128\/aac.00756-16","type":"journal-article","created":{"date-parts":[[2016,6,7]],"date-time":"2016-06-07T03:23:45Z","timestamp":1465269825000},"page":"4940-4955","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":12,"title":["Validation and Application of a Dried Blood Spot Assay for Biofilm-Active Antibiotics Commonly Used for Treatment of Prosthetic Implant Infections"],"prefix":"10.1128","volume":"60","author":[{"given":"Ben","family":"Knippenberg","sequence":"first","affiliation":[{"name":"Department of Infectious Diseases, Fremantle Hospital, Fremantle, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madhu","family":"Page-Sharp","sequence":"additional","affiliation":[{"name":"School of Pharmacy, Curtin University, Bentley, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8276-6784","authenticated-orcid":false,"given":"Sam","family":"Salman","sequence":"additional","affiliation":[{"name":"School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ben","family":"Clark","sequence":"additional","affiliation":[{"name":"Department of Infectious Diseases, Fremantle Hospital, Fremantle, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Dyer","sequence":"additional","affiliation":[{"name":"Department of Infectious Diseases, Fremantle Hospital, Fremantle, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin T.","family":"Batty","sequence":"additional","affiliation":[{"name":"School of Pharmacy, Curtin University, Bentley, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy M. E.","family":"Davis","sequence":"additional","affiliation":[{"name":"School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laurens","family":"Manning","sequence":"additional","affiliation":[{"name":"School of Medicine and Pharmacology, University of Western Australia, Harry Perkins Research Institute, Fiona Stanley Hospital, Murdoch, Western Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1086\/510079"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1086\/520991"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1097\/00001432-200104000-00010"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.drup.2011.02.005"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2010-0807"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpba.2010.07.015"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2011.03.017"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpba.2011.12.018"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpba.2008.09.025"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2008.04.003"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1128\/AAC.37.12.2522"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-0691.2007.01691.x"},{"key":"e_1_3_3_14_2","doi-asserted-by":"publisher","DOI":"10.1128\/AAC.00461-07"},{"key":"e_1_3_3_15_2","doi-asserted-by":"publisher","DOI":"10.1128\/AAC.41.12.2670"},{"key":"e_1_3_3_16_2","doi-asserted-by":"crossref","first-page":"S428","DOI":"10.1093\/clinids\/5.Supplement_3.S428","article-title":"Pharmacokinetics and metabolism of rifampin in humans","volume":"5","author":"Acocella G","year":"1983","unstructured":"Acocella G. 1983. Pharmacokinetics and metabolism of rifampin in humans. 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