The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time
Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bari...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Carswell, Kirstin A. [verfasserIn] Vincent, Royce P. [verfasserIn] Belgaumkar, Ajay P. [verfasserIn] Sherwood, Roy A. [verfasserIn] Amiel, Stephanie A. [verfasserIn] Patel, Ameet G. [verfasserIn] le Roux, Carel W. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2013 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Obesity surgery - New York, NY : Springer, 1991, 24(2013), 5 vom: 30. Dez., Seite 796-805 |
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| Übergeordnetes Werk: |
volume:24 ; year:2013 ; number:5 ; day:30 ; month:12 ; pages:796-805 |
| Links: |
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| DOI / URN: |
10.1007/s11695-013-1166-x |
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| Katalog-ID: |
SPR02182973X |
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| 100 | 1 | |a Carswell, Kirstin A. |e verfasserin |4 aut | |
| 245 | 1 | 4 | |a The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time |
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| 520 | |a Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. | ||
| 650 | 4 | |a Bariatrics |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Bariatric surgery |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Gastric bypass |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Biliopancreatic diversion |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Intestinal absorption |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Vincent, Royce P. |e verfasserin |4 aut | |
| 700 | 1 | |a Belgaumkar, Ajay P. |e verfasserin |4 aut | |
| 700 | 1 | |a Sherwood, Roy A. |e verfasserin |4 aut | |
| 700 | 1 | |a Amiel, Stephanie A. |e verfasserin |4 aut | |
| 700 | 1 | |a Patel, Ameet G. |e verfasserin |4 aut | |
| 700 | 1 | |a le Roux, Carel W. |e verfasserin |4 aut | |
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10.1007/s11695-013-1166-x doi (DE-627)SPR02182973X (SPR)s11695-013-1166-x-e DE-627 ger DE-627 rakwb eng 610 ASE 44.76 bkl 44.65 bkl Carswell, Kirstin A. verfasserin aut The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. Bariatrics (dpeaa)DE-He213 Bariatric surgery (dpeaa)DE-He213 Gastric bypass (dpeaa)DE-He213 Biliopancreatic diversion (dpeaa)DE-He213 Intestinal absorption (dpeaa)DE-He213 Vincent, Royce P. verfasserin aut Belgaumkar, Ajay P. verfasserin aut Sherwood, Roy A. verfasserin aut Amiel, Stephanie A. verfasserin aut Patel, Ameet G. verfasserin aut le Roux, Carel W. verfasserin aut Enthalten in Obesity surgery New York, NY : Springer, 1991 24(2013), 5 vom: 30. Dez., Seite 796-805 (DE-627)353900508 (DE-600)2087903-9 1708-0428 nnns volume:24 year:2013 number:5 day:30 month:12 pages:796-805 https://dx.doi.org/10.1007/s11695-013-1166-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.76 ASE 44.65 ASE AR 24 2013 5 30 12 796-805 |
| spelling |
10.1007/s11695-013-1166-x doi (DE-627)SPR02182973X (SPR)s11695-013-1166-x-e DE-627 ger DE-627 rakwb eng 610 ASE 44.76 bkl 44.65 bkl Carswell, Kirstin A. verfasserin aut The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. Bariatrics (dpeaa)DE-He213 Bariatric surgery (dpeaa)DE-He213 Gastric bypass (dpeaa)DE-He213 Biliopancreatic diversion (dpeaa)DE-He213 Intestinal absorption (dpeaa)DE-He213 Vincent, Royce P. verfasserin aut Belgaumkar, Ajay P. verfasserin aut Sherwood, Roy A. verfasserin aut Amiel, Stephanie A. verfasserin aut Patel, Ameet G. verfasserin aut le Roux, Carel W. verfasserin aut Enthalten in Obesity surgery New York, NY : Springer, 1991 24(2013), 5 vom: 30. Dez., Seite 796-805 (DE-627)353900508 (DE-600)2087903-9 1708-0428 nnns volume:24 year:2013 number:5 day:30 month:12 pages:796-805 https://dx.doi.org/10.1007/s11695-013-1166-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.76 ASE 44.65 ASE AR 24 2013 5 30 12 796-805 |
| allfields_unstemmed |
10.1007/s11695-013-1166-x doi (DE-627)SPR02182973X (SPR)s11695-013-1166-x-e DE-627 ger DE-627 rakwb eng 610 ASE 44.76 bkl 44.65 bkl Carswell, Kirstin A. verfasserin aut The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. Bariatrics (dpeaa)DE-He213 Bariatric surgery (dpeaa)DE-He213 Gastric bypass (dpeaa)DE-He213 Biliopancreatic diversion (dpeaa)DE-He213 Intestinal absorption (dpeaa)DE-He213 Vincent, Royce P. verfasserin aut Belgaumkar, Ajay P. verfasserin aut Sherwood, Roy A. verfasserin aut Amiel, Stephanie A. verfasserin aut Patel, Ameet G. verfasserin aut le Roux, Carel W. verfasserin aut Enthalten in Obesity surgery New York, NY : Springer, 1991 24(2013), 5 vom: 30. Dez., Seite 796-805 (DE-627)353900508 (DE-600)2087903-9 1708-0428 nnns volume:24 year:2013 number:5 day:30 month:12 pages:796-805 https://dx.doi.org/10.1007/s11695-013-1166-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.76 ASE 44.65 ASE AR 24 2013 5 30 12 796-805 |
| allfieldsGer |
10.1007/s11695-013-1166-x doi (DE-627)SPR02182973X (SPR)s11695-013-1166-x-e DE-627 ger DE-627 rakwb eng 610 ASE 44.76 bkl 44.65 bkl Carswell, Kirstin A. verfasserin aut The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. Bariatrics (dpeaa)DE-He213 Bariatric surgery (dpeaa)DE-He213 Gastric bypass (dpeaa)DE-He213 Biliopancreatic diversion (dpeaa)DE-He213 Intestinal absorption (dpeaa)DE-He213 Vincent, Royce P. verfasserin aut Belgaumkar, Ajay P. verfasserin aut Sherwood, Roy A. verfasserin aut Amiel, Stephanie A. verfasserin aut Patel, Ameet G. verfasserin aut le Roux, Carel W. verfasserin aut Enthalten in Obesity surgery New York, NY : Springer, 1991 24(2013), 5 vom: 30. Dez., Seite 796-805 (DE-627)353900508 (DE-600)2087903-9 1708-0428 nnns volume:24 year:2013 number:5 day:30 month:12 pages:796-805 https://dx.doi.org/10.1007/s11695-013-1166-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.76 ASE 44.65 ASE AR 24 2013 5 30 12 796-805 |
| allfieldsSound |
10.1007/s11695-013-1166-x doi (DE-627)SPR02182973X (SPR)s11695-013-1166-x-e DE-627 ger DE-627 rakwb eng 610 ASE 44.76 bkl 44.65 bkl Carswell, Kirstin A. verfasserin aut The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. Bariatrics (dpeaa)DE-He213 Bariatric surgery (dpeaa)DE-He213 Gastric bypass (dpeaa)DE-He213 Biliopancreatic diversion (dpeaa)DE-He213 Intestinal absorption (dpeaa)DE-He213 Vincent, Royce P. verfasserin aut Belgaumkar, Ajay P. verfasserin aut Sherwood, Roy A. verfasserin aut Amiel, Stephanie A. verfasserin aut Patel, Ameet G. verfasserin aut le Roux, Carel W. verfasserin aut Enthalten in Obesity surgery New York, NY : Springer, 1991 24(2013), 5 vom: 30. Dez., Seite 796-805 (DE-627)353900508 (DE-600)2087903-9 1708-0428 nnns volume:24 year:2013 number:5 day:30 month:12 pages:796-805 https://dx.doi.org/10.1007/s11695-013-1166-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.76 ASE 44.65 ASE AR 24 2013 5 30 12 796-805 |
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Enthalten in Obesity surgery 24(2013), 5 vom: 30. Dez., Seite 796-805 volume:24 year:2013 number:5 day:30 month:12 pages:796-805 |
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Carswell, Kirstin A. @@aut@@ Vincent, Royce P. @@aut@@ Belgaumkar, Ajay P. @@aut@@ Sherwood, Roy A. @@aut@@ Amiel, Stephanie A. @@aut@@ Patel, Ameet G. @@aut@@ le Roux, Carel W. @@aut@@ |
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However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. 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Carswell, Kirstin A. |
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Carswell, Kirstin A. ddc 610 bkl 44.76 bkl 44.65 misc Bariatrics misc Bariatric surgery misc Gastric bypass misc Biliopancreatic diversion misc Intestinal absorption The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time |
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610 ASE 44.76 bkl 44.65 bkl The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time Bariatrics (dpeaa)DE-He213 Bariatric surgery (dpeaa)DE-He213 Gastric bypass (dpeaa)DE-He213 Biliopancreatic diversion (dpeaa)DE-He213 Intestinal absorption (dpeaa)DE-He213 |
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ddc 610 bkl 44.76 bkl 44.65 misc Bariatrics misc Bariatric surgery misc Gastric bypass misc Biliopancreatic diversion misc Intestinal absorption |
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ddc 610 bkl 44.76 bkl 44.65 misc Bariatrics misc Bariatric surgery misc Gastric bypass misc Biliopancreatic diversion misc Intestinal absorption |
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The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time |
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Carswell, Kirstin A. |
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Obesity surgery |
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Carswell, Kirstin A. Vincent, Royce P. Belgaumkar, Ajay P. Sherwood, Roy A. Amiel, Stephanie A. Patel, Ameet G. le Roux, Carel W. |
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Carswell, Kirstin A. |
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effect of bariatric surgery on intestinal absorption and transit time |
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The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time |
| abstract |
Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. |
| abstractGer |
Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. |
| abstract_unstemmed |
Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. Small bowel adaptation after bariatric surgery may be key to understanding the mechanisms responsible for the beneficial metabolic effects of these operations. |
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The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR02182973X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230520003257.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201006s2013 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s11695-013-1166-x</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR02182973X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s11695-013-1166-x-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.76</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.65</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Carswell, Kirstin A.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="4"><subfield code="a">The Effect of Bariatric Surgery on Intestinal Absorption and Transit Time</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2013</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Background Bariatric surgical procedures are classified by their presumed mechanisms of action: restrictive, malabsorptive or a combination of both. However, this dogma is questionable and remains unproven. We investigated post-operative changes in nutrient absorption and transit time following bariatric surgery. Methods Participants were recruited into four groups: obese controls (body mass index (BMI) >30 kg/$ m^{2} $, n = 7), adjustable gastric banding (n = 6), Roux-en-Y gastric bypass (RYGB, n = 7) and biliopancreatic diversion with duodenal switch (DS, n = 5). Participants underwent sulphasalazine/sulphapyridine tests (oro-caecal transit time); fasting plasma citrulline (functional enterocyte mass); 3 days faecal collection for faecal elastase 1 (FE-1); calprotectin (FCp); faecal fatty acids (pancreatic exocrine function, gut inflammation and fat excretion, respectively); and 5 h d-xylose, l-rhamnose and lactulose test (intestinal absorption and permeability). Results Age and gender were not different but BMI differed between groups (p = 0.001). No difference in oro-caecal transit time (p = 0.935) or functional enterocyte mass (p = 0.819) was detected. FCp was elevated post-RYGB vs obese (p = 0.016) and FE-1 was reduced post-RYGB vs obese (p = 0.002). Faecal fat concentrations were increased post-DS vs obese (p = 0.038) and RYGB (p = 0.024) and were also higher post-RYGB vs obese (p = 0.033). Urinary excretion of d-xylose and l-rhamnose was not different between the groups; however, lactulose/rhamnose ratio was elevated post-DS vs other groups (all p < 0.02), suggesting increased intestinal permeability. Conclusions Following RYGB, there are surprisingly few abnormalities or indications of severe malabsorption of fats or sugars. 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