Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model

Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 p...
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Gespeichert in:

Autor*in:	Edward A. Carter [verfasserIn] Ronald G. Barr [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2013

Übergeordnetes Werk:	In: Journal of Nutrition and Metabolism - Hindawi Limited, 2009, (2013)
Übergeordnetes Werk:	year:2013

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1155/2013/540967

Katalog-ID:	DOAJ034649476

Internformat


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520			\|a Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate.
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publishDate	2013
allfields	10.1155/2013/540967 doi (DE-627)DOAJ034649476 (DE-599)DOAJc1447d1a0b2c4e98bc16ba749760fe56 DE-627 ger DE-627 rakwb eng RC620-627 Edward A. Carter verfasserin aut Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate. Nutritional diseases. Deficiency diseases Ronald G. Barr verfasserin aut In Journal of Nutrition and Metabolism Hindawi Limited, 2009 (2013) (DE-627)635603829 (DE-600)2573563-9 20900732 nnns year:2013 https://doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/article/c1447d1a0b2c4e98bc16ba749760fe56 kostenfrei http://dx.doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/toc/2090-0724 Journal toc kostenfrei https://doaj.org/toc/2090-0732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 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_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_4367 GBV_ILN_4700 AR 2013
spelling	10.1155/2013/540967 doi (DE-627)DOAJ034649476 (DE-599)DOAJc1447d1a0b2c4e98bc16ba749760fe56 DE-627 ger DE-627 rakwb eng RC620-627 Edward A. Carter verfasserin aut Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate. Nutritional diseases. Deficiency diseases Ronald G. Barr verfasserin aut In Journal of Nutrition and Metabolism Hindawi Limited, 2009 (2013) (DE-627)635603829 (DE-600)2573563-9 20900732 nnns year:2013 https://doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/article/c1447d1a0b2c4e98bc16ba749760fe56 kostenfrei http://dx.doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/toc/2090-0724 Journal toc kostenfrei https://doaj.org/toc/2090-0732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 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_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_4367 GBV_ILN_4700 AR 2013
allfields_unstemmed	10.1155/2013/540967 doi (DE-627)DOAJ034649476 (DE-599)DOAJc1447d1a0b2c4e98bc16ba749760fe56 DE-627 ger DE-627 rakwb eng RC620-627 Edward A. Carter verfasserin aut Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate. Nutritional diseases. Deficiency diseases Ronald G. Barr verfasserin aut In Journal of Nutrition and Metabolism Hindawi Limited, 2009 (2013) (DE-627)635603829 (DE-600)2573563-9 20900732 nnns year:2013 https://doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/article/c1447d1a0b2c4e98bc16ba749760fe56 kostenfrei http://dx.doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/toc/2090-0724 Journal toc kostenfrei https://doaj.org/toc/2090-0732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 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_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_4367 GBV_ILN_4700 AR 2013
allfieldsGer	10.1155/2013/540967 doi (DE-627)DOAJ034649476 (DE-599)DOAJc1447d1a0b2c4e98bc16ba749760fe56 DE-627 ger DE-627 rakwb eng RC620-627 Edward A. Carter verfasserin aut Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate. Nutritional diseases. Deficiency diseases Ronald G. Barr verfasserin aut In Journal of Nutrition and Metabolism Hindawi Limited, 2009 (2013) (DE-627)635603829 (DE-600)2573563-9 20900732 nnns year:2013 https://doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/article/c1447d1a0b2c4e98bc16ba749760fe56 kostenfrei http://dx.doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/toc/2090-0724 Journal toc kostenfrei https://doaj.org/toc/2090-0732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 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_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_4367 GBV_ILN_4700 AR 2013
allfieldsSound	10.1155/2013/540967 doi (DE-627)DOAJ034649476 (DE-599)DOAJc1447d1a0b2c4e98bc16ba749760fe56 DE-627 ger DE-627 rakwb eng RC620-627 Edward A. Carter verfasserin aut Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate. Nutritional diseases. Deficiency diseases Ronald G. Barr verfasserin aut In Journal of Nutrition and Metabolism Hindawi Limited, 2009 (2013) (DE-627)635603829 (DE-600)2573563-9 20900732 nnns year:2013 https://doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/article/c1447d1a0b2c4e98bc16ba749760fe56 kostenfrei http://dx.doi.org/10.1155/2013/540967 kostenfrei https://doaj.org/toc/2090-0724 Journal toc kostenfrei https://doaj.org/toc/2090-0732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 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_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_4367 GBV_ILN_4700 AR 2013
language	English
source	In Journal of Nutrition and Metabolism (2013) year:2013
sourceStr	In Journal of Nutrition and Metabolism (2013) year:2013
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Nutritional diseases. Deficiency diseases
isfreeaccess_bool	true
container_title	Journal of Nutrition and Metabolism
authorswithroles_txt_mv	Edward A. Carter @@aut@@ Ronald G. Barr @@aut@@
publishDateDaySort_date	2013-01-01T00:00:00Z
hierarchy_top_id	635603829
id	DOAJ034649476
language_de	englisch
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callnumber-first	R - Medicine
author	Edward A. Carter
spellingShingle	Edward A. Carter misc RC620-627 misc Nutritional diseases. Deficiency diseases Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model
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topic_title	RC620-627 Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model
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title	Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model
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title_full	Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model
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title_sort	preliminary studies demonstrating acetoclastic methanogenesis in a rat colonic ring model
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title_auth	Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model
abstract	Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate.
abstractGer	Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate.
abstract_unstemmed	Washed rat colonic rings were incubated in closed flasks under N2 at physiologic pH and temperature levels. In the absence of an exogenous substrate, negligible H2 but some CH4 concentrations were detected in vitro after one hour of incubation, but high concentrations (H2 < 100 ppm, CH4 < 10 ppm) of both gases were found after 24 hours of culture. Production of H2 and CH4 by the washed colonic rings was stimulated by lactose addition. Maximum H2 production occurred at about pH 7.0, while maximum CH4 production occurred between pH 4.0 and 6.0. The increased production of both gases at 24 hours was associated with dramatic increases (104-fold) in anaerobic bacteria colony counts on the colonic rings and in the incubation media, as well as dramatic increases (100-fold) in acetate concentrations in the media, while lactate concentrations first rose and then fell significantly. These results suggest that gas production in colonic ring preparations is subject to quantitative changes in microbiota, pH, and metabolite formation analogous to in vivo conditions. In addition, microbiota firmly attached to colonic tissue appears to utilize colonic tissue to support its growth in the absence of an exogenous substrate.
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title_short	Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model
url	https://doi.org/10.1155/2013/540967 https://doaj.org/article/c1447d1a0b2c4e98bc16ba749760fe56 http://dx.doi.org/10.1155/2013/540967 https://doaj.org/toc/2090-0724 https://doaj.org/toc/2090-0732
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Preliminary Studies Demonstrating Acetoclastic Methanogenesis in a Rat Colonic Ring Model

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