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<dc:title>3D Printed Tacrolimus Rectal Formulations Ameliorate Colitis in an Experimental Animal Model of Inflammatory Bowel Disease.</dc:title>
<dc:creator>Seoane-Viaño, Iria</dc:creator>
<dc:creator>Gómez Lado, Noemí</dc:creator>
<dc:creator>Lazare Iglesias, Hector</dc:creator>
<dc:creator>García Otero, Xurxo</dc:creator>
<dc:creator>Antúnez López, José Ramón</dc:creator>
<dc:creator>Ruibal Morell, Alvaro</dc:creator>
<dc:creator>Varela Correa, Juan Jesús</dc:creator>
<dc:creator>Aguiar Fernández, Pablo</dc:creator>
<dc:creator>Basit, Abdul W</dc:creator>
<dc:creator>Otero-Espinar, Francisco J</dc:creator>
<dc:creator>González Barcia, Miguel</dc:creator>
<dc:creator>Goyanes, Alvaro</dc:creator>
<dc:creator>Luzardo-Álvarez, Asteria</dc:creator>
<dc:creator>Fernández Ferreiro, Anxo</dc:creator>
<dc:subject>CHUS</dc:subject>
<dc:subject>CHUO</dc:subject>
<dc:subject>IDIS</dc:subject>
<dc:description>The aim of this study was to fabricate novel self-supporting tacrolimus suppositories using semisolid extrusion 3-dimensional printing (3DP) and to investigate their efficacy in an experimental model of inflammatory bowel disease. Blends of Gelucire 44/14 and coconut oil were employed as lipid excipients to obtain suppository formulations with self-emulsifying properties, which were then tested in a TNBS (2,4,6-trinitrobenzenesulfonic acid) induced rat colitis model. Disease activity was monitored using PET/CT medical imaging; maximum standardized uptake values (SUVmax), a measure of tissue radiotracer accumulation rate, together with body weight changes and histological assessments, were used as inflammatory indices to monitor treatment efficacy. Following tacrolimus treatment, a significant reduction in SUVmax was observed on days 7 and 10 in the rat colon sections compared to non-treated animals. Histological analysis using Nancy index confirmed disease remission. Moreover, statistical analysis showed a positive correlation (R(2) = 71.48%) between SUVmax values and weight changes over time. Overall, this study demonstrates the effectiveness of 3D printed tacrolimus suppositories to ameliorate colitis and highlights the utility of non-invasive PET/CT imaging to evaluate new therapies in the preclinical area.</dc:description>
<dc:date>2022-03-23T08:56:17Z</dc:date>
<dc:date>2022-03-23T08:56:17Z</dc:date>
<dc:date>2020</dc:date>
<dc:type>Journal Article</dc:type>
<dc:identifier>2227-9059</dc:identifier>
<dc:identifier>https://www.ncbi.nlm.nih.gov/pubmed/33276641</dc:identifier>
<dc:identifier>http://hdl.handle.net/20.500.11940/16389</dc:identifier>
<dc:identifier>10.3390/biomedicines8120563</dc:identifier>
<dc:identifier>33276641</dc:identifier>
<dc:identifier>36924</dc:identifier>
<dc:rights>Atribución 4.0 Internacional</dc:rights>
<dc:rights>http://creativecommons.org/licenses/by/4.0/</dc:rights>
<dc:rights>openAccess</dc:rights>
</oai_dc:dc>
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<dc:title>3D Printed Tacrolimus Rectal Formulations Ameliorate Colitis in an Experimental Animal Model of Inflammatory Bowel Disease.</dc:title>
<dc:creator>Seoane-Viaño, Iria</dc:creator>
<dc:creator>Gómez Lado, Noemí</dc:creator>
<dc:creator>Lazare Iglesias, Hector</dc:creator>
<dc:creator>García Otero, Xurxo</dc:creator>
<dc:creator>Antúnez López, José Ramón</dc:creator>
<dc:creator>Ruibal Morell, Alvaro</dc:creator>
<dc:creator>Varela Correa, Juan Jesús</dc:creator>
<dc:creator>Aguiar Fernández, Pablo</dc:creator>
<dc:creator>Basit, Abdul W</dc:creator>
<dc:creator>Otero-Espinar, Francisco J</dc:creator>
<dc:creator>González Barcia, Miguel</dc:creator>
<dc:creator>Goyanes, Alvaro</dc:creator>
<dc:creator>Luzardo-Álvarez, Asteria</dc:creator>
<dc:creator>Fernández Ferreiro, Anxo</dc:creator>
<dc:description>The aim of this study was to fabricate novel self-supporting tacrolimus suppositories using semisolid extrusion 3-dimensional printing (3DP) and to investigate their efficacy in an experimental model of inflammatory bowel disease. Blends of Gelucire 44/14 and coconut oil were employed as lipid excipients to obtain suppository formulations with self-emulsifying properties, which were then tested in a TNBS (2,4,6-trinitrobenzenesulfonic acid) induced rat colitis model. Disease activity was monitored using PET/CT medical imaging; maximum standardized uptake values (SUVmax), a measure of tissue radiotracer accumulation rate, together with body weight changes and histological assessments, were used as inflammatory indices to monitor treatment efficacy. Following tacrolimus treatment, a significant reduction in SUVmax was observed on days 7 and 10 in the rat colon sections compared to non-treated animals. Histological analysis using Nancy index confirmed disease remission. Moreover, statistical analysis showed a positive correlation (R(2) = 71.48%) between SUVmax values and weight changes over time. Overall, this study demonstrates the effectiveness of 3D printed tacrolimus suppositories to ameliorate colitis and highlights the utility of non-invasive PET/CT imaging to evaluate new therapies in the preclinical area.</dc:description>
<dc:date>2022-03-23T08:56:17Z</dc:date>
<dc:date>2022-03-23T08:56:17Z</dc:date>
<dc:date>2020</dc:date>
<dc:type>Journal Article</dc:type>
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<dc:identifier>2227-9059</dc:identifier>
<dc:identifier>https://www.ncbi.nlm.nih.gov/pubmed/33276641</dc:identifier>
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<dc:identifier>10.3390/biomedicines8120563</dc:identifier>
<dc:identifier>33276641</dc:identifier>
<dc:identifier>36924</dc:identifier>
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