Zobrazeno 1 - 10 of 370 pro vyhledávání: '"Vonk RJ"'
1
Oro-cecal transit time: influence of a subsequent meal
Autor: Priebe, MG, Wachters-Hagedoorn, RE, Stellaard, F, Heiner, AM, Elzinga, H, Vonk, RJ
Publikováno v: European Journal of Clinical Investigation, 34(6), 417-421. Wiley
Background Small intestinal and oro-cecal transit time (OCTT) is determined for clinical diagnostics and research purposes. Experimental protocols used vary with respect to the inclusion of a subsequent meal during the test period. This study was con
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::f08d03bb128e8935af4cde9f572ddf67
https://research.rug.nl/en/publications/dd8acb45-92f9-412c-bc02-3528b742f0d3
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3
The C-13/H-2-glucose test for determination of small intestinal lactase activity
Autor: Vonk, RJ, Stellaard, F, Priebe, MG, Koetse, HA, Hagedoorn, RE, de Bruijn, S, Elzinga, H, Lenoir-Wijnkoop, [No Value], Antoine, JM
Publikováno v: European Journal of Clinical Investigation, 31(3), 226-233. Wiley
Background To diagnose hypolactasia, determination of lactase enzyme activity in small intestinal biopsy material is considered to be the golden standard. Because of its strongly invasive character and the sampling problems, alternative methods have
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::56bfdfabf7cfa367e7c28ba95749d44a
https://research.rug.nl/en/publications/ff77d4ad-ee5b-4d03-bdc9-289ec62561e6
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4
C-13-carbohydrate breath tests: Impact of physical activity on the rate-limiting step in lactose utilization
Autor: Stellaard, F, Koetse, HA, Elzinga, H, Boverhof, R, Tjoonk, R, Klimp, A, Vegter, D, Liesker, J, Vonk, RJ
Publikováno v: SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY, 35(8), 819-823. Taylor & Francis Group
Background: (CO2)-C-13 breath tests can be used to monitor carbohydrate digestion in the small intestine. However, after ingestion of C-13-substrates, (CO2)-C-13 excretion in breath originates from two sources: a digestive/oxidative fraction, derived
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::2be9e253f0470ce06c5a696ba5b06b5e
https://research.rug.nl/en/publications/a497289d-f359-420e-8ff6-f2592564ed1e
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5
Variations in colonic H-2 and CO2 production as a cause of inadequate diagnosis of carbohydrate maldigestion in breath tests
Autor: Koetse, HA, Vonk, RJ, Pasterkamp, S, de Bruijn, S, Stellaard, F
Publikováno v: SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY, 35(6), 607-611. Taylor & Francis Group
Background: Lactose maldigestion is usually diagnosed by means of the H-2 breath test. When C-13-lactose is used as substrate, a (CO2)-C-13 breath rest can be performed simultaneously. In an earlier publication we described the relation between both
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::5901f6ef181e6f828999717c769f3d30
https://research.rug.nl/en/publications/feb80f3d-e788-4942-8574-dbec2833c5d2
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6
Lactose (mal)digestion evaluated by the C-13-lactose digestion test
Autor: Vonk, RJ, Lin, Y, Koetse, HA, Huang, CY, Zeng, G, Elzinga, H, Antoine, JM, Stellaard, F
Publikováno v: European Journal of Clinical Investigation, 30(2), 140-146. Wiley
Background The prevalence of generically determined lactase nonpersistence is based on the results of the lactose H-2 breath rest. This test, however, is an indirect test, which might lead to misinterpretation. Design We determined lactase activity i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::21074a2ee7c75aa059d450c0c4b5931e
https://research.rug.nl/en/publications/cf3618ae-58d3-4135-8f84-852f6b0ce512
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9
Fat malabsorption in cystic fibrosis patients receiving enzyme replacement therapy is due to impaired intestinal uptake of long-chain fatty acids
Autor: Kalivianakis, M, Minich, DM, Bijleveld, CMA, van Aalderen, WMC, Stellaard, F, Vonk, RJ, Verkade, HJ
Publikováno v: American Journal of Clinical Nutrition, 69(1), 127-134. Oxford University Press
Background: Pancreatic enzyme replacement therapy frequently fails to correct intestinal fat malabsorption completely in cystic fibrosis (CF) patients. The reason for this failure is unknown. Objective: We investigated whether fat malabsorption in CF
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::01913a8ff75d257a3dff6257547781a4
https://research.rug.nl/en/publications/56d03ed3-994a-42db-8c36-c2b386d16531
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10
Non-invasive detection of low-intestinal lactase activity in children by use of a combined (CO2)-C-13/H-2 breath test
Autor: Koetse, HA, Stellaard, F, Bijleveld, CMA, Elzinga, H, Boverhof, R, van der Meer, R, Vonk, RJ, Sauer, PJJ
Publikováno v: SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY, 34(1), 35-40. Taylor & Francis Group
Background: The aim of the study was to diagnose hypolactasia with a higher accuracy than with the traditional H-2 breath test. Methods: We used a combined C-13-lactose (CO2)-C-13/H-2 breath test, which was performed in 33 patients in whom lactase ac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::e0fa2880c4c2cfe909fc9d23b4243ead
https://research.rug.nl/en/publications/443c4fd4-3d02-41ab-bc92-8da1d13165c1
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