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RISS 인기검색어
- 검색키워드
- 저자 : ( Tim Vanuytsel ) (검색결과 2 건)
- 무료
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Validation of Octanoate Breath Test for Measuring Gastric Emptying in Rats
( Ingrid Demedts ),( Christophe Vanormelingen ),( Hubert Van Billoen ),( Tim Vanuytsel ),( Ricard Farre ),( Tatsuhiro Masaoka ),( Alfons Verbruggen ),( Kristien Verbeke ),( Pieter Vanden Berghe ),( Ja 대한소화기기능성질환·운동학회 2013 Journal of Neurogastroenterology and Motility (JNM Vol.19 No.2
Background/Aims Lack of simple and repeatable tests hampers gastric emptying studies in rats. The aim of this study was to adapt the 14C octanoate solid gastric emptying breath test for application in rats, and to validate it against radioscintigraphic method. Methods After ingestion of a meal containing 3 mCi 99mTc and 2 μCi 14C-octanoate, 23 male Wistar rats were placed on a gamma cam-era in a airflow container. Scintigraphic images were taken at regular intervals. The amount of 14CO2 in a regularly replaced hyamine hydroxide solution, capturing CO2 in the outflow air, was counted using liquid scintillation spectrometry. 99mTc gastric retention curves and 14CO2-excretion curves were fitted to their respective data. Three rats underwent the same procedures after administration of atropine. Results Overall Tr10% (time at which 10% of the original amount of 99mTc remained in the stomach) was 355 ± 64 minutes; Te90% (time at which 90% of total amount of 14CO2 was excreted) was 325 ± 106 minutes. Their correlation coefficient was 0.71, R-square 0.50 and P < 0.005. Tr1/2 (50% of original amount of 99mTc remained) was 124 ± 28 minutes; Te1/2 (50% of total amount of 14CO2 excreted) 114 ± 32 minutes. Their correlation coefficient was 0.83 with R-square of 0.69 and P < 0.00005. In 12 immobilized animals correlation was even better: correlation coefficient 0.84; R-square 0.71 and P < 0.001 (Tr10% was 388 ± 117 minutes; Te90% 532 ± 219 minutes; Tr1/2 of 165 ± 54 minutes; Te1/2 of 175 ± 67 minutes). Atropine significantly lengthened all emptying times: 904 ± 307 and 1461 ± 684 minutes for Tr10% and Te90%, respectively; and 432 ± 117 minutes for Tr1/2 and 473 ± 190 minutes for Te1/2. Conclusions We adapted and validated the 14C-octanoate gastric emptying breath test for application in rats.
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Concise Review: Applicability of High-resolution Manometry in Gastroesophageal Reflux Disease
Sawangpong Jandee,Suriya Keeratichananont,Jan Tack,Tim Vanuytsel 대한소화기 기능성질환∙운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.4
Manometry, particularly high-resolution manometry is the preferred diagnostic tool used to evaluate esophageal motor function. This investigation is strongly indicated in the setting of dysphagia, but is also useful in gastroesophageal reflux disease (GERD), especially in case of failure of conventional treatment to exclude alternative diagnoses and prior to anti-reflux surgery. Moreover, ineffective esophagogastric junction barrier function and esophageal motor dysfunction are pathophysiological mechanisms in GERD and can be identified by manometry. The recent international guidelines have positioned high-resolution manometry as an important part of functional diagnostic work up in GERD in order to identify the GERD phenotype to guide specific treatment. The proposed manometric identification and measurement is based on the Chicago classification version 4.0 adding with new established metrics for GERD evaluation.
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