Show simple item record

dc.contributor.authorHarris, J.C.
dc.contributor.authorCoburn, J.M.
dc.contributor.authorKajdacsy-Balla, A.
dc.contributor.authorKaplan, D.L.
dc.contributor.authorChiu, B.
dc.date.accessioned2017-06-20T19:34:32Z
dc.date.available2017-06-20T19:34:32Z
dc.date.issued2016-12
dc.identifier.bibliographicCitationHarris, J. C., Coburn, J. M., Kajdacsy-Balla, A., Kaplan, D. L. and Chiu, B. Sustained delivery of vincristine inside an orthotopic mouse sarcoma model decreases tumor growth. Journal of Pediatric Surgery. 2016. 51(12): 2058-2062. DOI: 10.1016/j.jpedsurg.2016.09.040.en_US
dc.identifier.issn0022-3468
dc.identifier.urihttp://hdl.handle.net/10027/21677
dc.descriptionNOTICE: This is the author’s version of a work that was accepted for publication in Journal of Pediatric Surgery. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Pediatric Surgery, Volume 51, Issue 12, December 2016, Pages 2058–2062. DOI: 10.1016/j.jpedsurg.2016.09.040.en_US
dc.description.abstractBackground Sarcoma accounts for 20% of solid tumors in children. Surgery has significant morbidity. We hypothesized that delivering chemotherapy directly into tumors through sustained release silk systems could slow tumor growth. Methods Human Ewing sarcoma cells A673 were cultured with vincristine and doxorubicin to determine half maximal inhibitory concentration (IC50). Cells were injected into mouse hind leg to create orthotopic tumors. Tumor volumes were measured using ultrasound. When volume reached > 250mm3, interventions included: implantation of drug-free silk foam (Control-F), doxorubicin 400 μg foam (Dox400-F), vincristine 50 μg foam (Vin50-F), drug-free silk gel (Control-G), vincristine 50 μg gel (Vin50-G), or single dose intravenous vincristine 50 μg (Vin50-IV). End-point was volume > 1000 mm3. Kaplan Meier and ANOVA were used. Results IC50 for vincristine and doxorubicin was 0.5 ng/mL and 200 ng/mL, respectively. There was no difference between Dox400-F [6 ± 1 days to end point (DTEP)] and Control-F (5 ± 1.3 DTEP). Vin50-F (12.4 ± 3.5 DTEP) had slower growth compared to Control-F (p < 0.001), and there was no difference between Vin50-F and Vin50-IV (14 ± 0 DTEP). Growth was slowest with Vin50-G, 28 ± 10.3 DTEP compared to all other treatment groups (p < 0.05). Conclusion Sustained delivery of vincristine inside the sarcoma tumor with silk gel decreased tumor growth. Applying this intratumoral treatment strategy may potentially decrease the extent of surgical excision.en_US
dc.publisherElsevieren_US
dc.subjectSarcomaen_US
dc.subjectLocal drug deliveryen_US
dc.subjectSilken_US
dc.subjectVincristineen_US
dc.titleSustained delivery of vincristine inside an orthotopic mouse sarcoma model decreases tumor growthen_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record