PMID- 29199894 OWN - NLM STAT- MEDLINE DCOM- 20180817 LR - 20180828 IS - 1521-0499 (Electronic) IS - 0190-2148 (Linking) VI - 43 IP - 9-10 DP - 2017 Nov-Dec TI - Local and systemic effects of a silver nitrate coated indwelling pleural catheter in an animal model of pleurodesis. PG - 388-394 LID - 10.1080/01902148.2017.1384865 [doi] AB - Purpose/Aim of the study: This study assessed the safety and potential toxicity of a silver nitrate coated indwelling pleural catheter (SNCIPC) designed to create pleurodesis in a large animal model. MATERIALS AND METHODS: Sixteen animals underwent insertion of either a SNCIPC or an uncoated silicone catheter. Half of the animals were sacrificed at day 7 and the others at day 30. Animal weight and assessment of well-being, pleural fluid and blood collection were performed at regular intervals. Pleurodesis was assessed at necropsy and histopathological examination of organs performed. RESULTS: No mortality or significant clinical findings were observed throughout the experiment. SNCIPC treated animals had increased pleural fluid drainage overall (p < 0.001) and specifically on days 1-4. No differences in hemoglobin, white blood cell count or neutrophil counts were detected between groups. No treatment related histological findings were observed in any of the evaluated tissues outside of the treated area. Serum silver levels in SNCIPC catheter treated animals peaked on Day 4 (0.185 mug/mL, 30 day group) then gradually decreased for the remainder of the study period. The highest tissue silver concentrations were noted in the SNCIPC groups in tissues close to the treatment site in addition to the liver (59.8ug/g +/- 8.6 and 73.3ug/g +/- 25). Pleurodesis scores were significantly higher in SNCIPC treated animals for both the 7 day (median 6.5 vs. 1.0, p = 0.029) and 30 day cohorts (median 7.0 vs. 1.5, p = 0.029). CONCLUSIONS: SNCIPC are well tolerated and not associated with any significant signs of toxicity. Silver levels were elevated in local tissues, serum and liver but without evidence of pathological impact. Effective pleurodesis was present by day 7 and more established by day 30. Clinical studies to investigate the safety and efficacy of this device in patients with malignant pleural effusions appear warranted. FAU - Tremblay, Alain AU - Tremblay A AUID- ORCID: 0000-0002-0025-7426 AD - a Department of Medicine , University of Calgary Cumming School of Medicine , Calgary , AB. Canada. FAU - Kearney, Christine T AU - Kearney CT AD - b Becton, Dickinson and Company Inc. , Vernon Hills , Illinois , USA. FAU - Hanks, Chris AU - Hanks C AD - c Sinclair Research Center L.L.C , Auxvasse , MO , USA. FAU - Hughes Hanks, Jennifer AU - Hughes Hanks J AD - c Sinclair Research Center L.L.C , Auxvasse , MO , USA. FAU - White, David S AU - White DS AD - c Sinclair Research Center L.L.C , Auxvasse , MO , USA. FAU - Pereira, Marcia E AU - Pereira ME AD - d Histo-Scientific Research Laboratories Inc. , Mount Jackson , VA , USA. FAU - Zook, Craig E AU - Zook CE AD - d Histo-Scientific Research Laboratories Inc. , Mount Jackson , VA , USA. FAU - Sargis, Karen AU - Sargis K AD - b Becton, Dickinson and Company Inc. , Vernon Hills , Illinois , USA. FAU - Zhang, Luke AU - Zhang L AD - c Sinclair Research Center L.L.C , Auxvasse , MO , USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20171204 PL - England TA - Exp Lung Res JT - Experimental lung research JID - 8004944 RN - 0 (Coated Materials, Biocompatible) RN - 3M4G523W1G (Silver) RN - 95IT3W8JZE (Silver Nitrate) SB - IM MH - Animals MH - Catheters, Indwelling/adverse effects/*standards MH - Coated Materials, Biocompatible/chemistry MH - *Pleura MH - Pleurodesis/*methods MH - Silver/analysis/pharmacokinetics MH - Silver Nitrate/*therapeutic use/toxicity MH - Tissue Distribution OTO - NOTNLM OT - cancer OT - pleural effusion OT - pleurodesis OT - silver nitrate EDAT- 2017/12/05 06:00 MHDA- 2018/08/18 06:00 CRDT- 2017/12/05 06:00 PHST- 2017/12/05 06:00 [pubmed] PHST- 2018/08/18 06:00 [medline] PHST- 2017/12/05 06:00 [entrez] AID - 10.1080/01902148.2017.1384865 [doi] PST - ppublish SO - Exp Lung Res. 2017 Nov-Dec;43(9-10):388-394. doi: 10.1080/01902148.2017.1384865. Epub 2017 Dec 4.