Interpretation of 41Ca data using compartmental modeling in post-menopausal women
Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated w...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Lee, Wang-Hee [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2010 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2010 |
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| Übergeordnetes Werk: |
Enthalten in: Analytical and bioanalytical chemistry - Berlin : Springer, 2002, 399(2010), 4 vom: 09. Dez., Seite 1613-1622 |
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| Übergeordnetes Werk: |
volume:399 ; year:2010 ; number:4 ; day:09 ; month:12 ; pages:1613-1622 |
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| DOI / URN: |
10.1007/s00216-010-4454-5 |
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| 520 | |a Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. | ||
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10.1007/s00216-010-4454-5 doi (DE-627)SPR00219709X (SPR)s00216-010-4454-5-e DE-627 ger DE-627 rakwb eng Lee, Wang-Hee verfasserin aut Interpretation of 41Ca data using compartmental modeling in post-menopausal women 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2010 Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. Ca (dpeaa)DE-He213 Compartmental modeling (dpeaa)DE-He213 Bone resorption (dpeaa)DE-He213 Bone balance (dpeaa)DE-He213 Dynamic simulation (dpeaa)DE-He213 Wastney, Meryl E. aut Jackson, George S. aut Martin, Berdine R. aut Weaver, Connie M. aut Enthalten in Analytical and bioanalytical chemistry Berlin : Springer, 2002 399(2010), 4 vom: 09. Dez., Seite 1613-1622 (DE-627)25372337X (DE-600)1459122-4 1618-2650 nnns volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 https://dx.doi.org/10.1007/s00216-010-4454-5 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_206 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_2056 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_2360 GBV_ILN_2446 GBV_ILN_2470 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_4277 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 399 2010 4 09 12 1613-1622 |
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10.1007/s00216-010-4454-5 doi (DE-627)SPR00219709X (SPR)s00216-010-4454-5-e DE-627 ger DE-627 rakwb eng Lee, Wang-Hee verfasserin aut Interpretation of 41Ca data using compartmental modeling in post-menopausal women 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2010 Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. Ca (dpeaa)DE-He213 Compartmental modeling (dpeaa)DE-He213 Bone resorption (dpeaa)DE-He213 Bone balance (dpeaa)DE-He213 Dynamic simulation (dpeaa)DE-He213 Wastney, Meryl E. aut Jackson, George S. aut Martin, Berdine R. aut Weaver, Connie M. aut Enthalten in Analytical and bioanalytical chemistry Berlin : Springer, 2002 399(2010), 4 vom: 09. Dez., Seite 1613-1622 (DE-627)25372337X (DE-600)1459122-4 1618-2650 nnns volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 https://dx.doi.org/10.1007/s00216-010-4454-5 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_206 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_2056 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_2360 GBV_ILN_2446 GBV_ILN_2470 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_4277 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 399 2010 4 09 12 1613-1622 |
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10.1007/s00216-010-4454-5 doi (DE-627)SPR00219709X (SPR)s00216-010-4454-5-e DE-627 ger DE-627 rakwb eng Lee, Wang-Hee verfasserin aut Interpretation of 41Ca data using compartmental modeling in post-menopausal women 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2010 Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. Ca (dpeaa)DE-He213 Compartmental modeling (dpeaa)DE-He213 Bone resorption (dpeaa)DE-He213 Bone balance (dpeaa)DE-He213 Dynamic simulation (dpeaa)DE-He213 Wastney, Meryl E. aut Jackson, George S. aut Martin, Berdine R. aut Weaver, Connie M. aut Enthalten in Analytical and bioanalytical chemistry Berlin : Springer, 2002 399(2010), 4 vom: 09. Dez., Seite 1613-1622 (DE-627)25372337X (DE-600)1459122-4 1618-2650 nnns volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 https://dx.doi.org/10.1007/s00216-010-4454-5 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_206 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_2056 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_2360 GBV_ILN_2446 GBV_ILN_2470 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_4277 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 399 2010 4 09 12 1613-1622 |
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10.1007/s00216-010-4454-5 doi (DE-627)SPR00219709X (SPR)s00216-010-4454-5-e DE-627 ger DE-627 rakwb eng Lee, Wang-Hee verfasserin aut Interpretation of 41Ca data using compartmental modeling in post-menopausal women 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2010 Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. Ca (dpeaa)DE-He213 Compartmental modeling (dpeaa)DE-He213 Bone resorption (dpeaa)DE-He213 Bone balance (dpeaa)DE-He213 Dynamic simulation (dpeaa)DE-He213 Wastney, Meryl E. aut Jackson, George S. aut Martin, Berdine R. aut Weaver, Connie M. aut Enthalten in Analytical and bioanalytical chemistry Berlin : Springer, 2002 399(2010), 4 vom: 09. Dez., Seite 1613-1622 (DE-627)25372337X (DE-600)1459122-4 1618-2650 nnns volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 https://dx.doi.org/10.1007/s00216-010-4454-5 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_206 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_2056 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_2360 GBV_ILN_2446 GBV_ILN_2470 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_4277 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 399 2010 4 09 12 1613-1622 |
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10.1007/s00216-010-4454-5 doi (DE-627)SPR00219709X (SPR)s00216-010-4454-5-e DE-627 ger DE-627 rakwb eng Lee, Wang-Hee verfasserin aut Interpretation of 41Ca data using compartmental modeling in post-menopausal women 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2010 Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. Ca (dpeaa)DE-He213 Compartmental modeling (dpeaa)DE-He213 Bone resorption (dpeaa)DE-He213 Bone balance (dpeaa)DE-He213 Dynamic simulation (dpeaa)DE-He213 Wastney, Meryl E. aut Jackson, George S. aut Martin, Berdine R. aut Weaver, Connie M. aut Enthalten in Analytical and bioanalytical chemistry Berlin : Springer, 2002 399(2010), 4 vom: 09. Dez., Seite 1613-1622 (DE-627)25372337X (DE-600)1459122-4 1618-2650 nnns volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 https://dx.doi.org/10.1007/s00216-010-4454-5 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_206 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_2056 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_2360 GBV_ILN_2446 GBV_ILN_2470 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_4277 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 399 2010 4 09 12 1613-1622 |
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Enthalten in Analytical and bioanalytical chemistry 399(2010), 4 vom: 09. Dez., Seite 1613-1622 volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 |
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Enthalten in Analytical and bioanalytical chemistry 399(2010), 4 vom: 09. Dez., Seite 1613-1622 volume:399 year:2010 number:4 day:09 month:12 pages:1613-1622 |
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Analytical and bioanalytical chemistry |
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Lee, Wang-Hee @@aut@@ Wastney, Meryl E. @@aut@@ Jackson, George S. @@aut@@ Martin, Berdine R. @@aut@@ Weaver, Connie M. @@aut@@ |
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The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. 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Lee, Wang-Hee |
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Lee, Wang-Hee misc Ca misc Compartmental modeling misc Bone resorption misc Bone balance misc Dynamic simulation Interpretation of 41Ca data using compartmental modeling in post-menopausal women |
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Interpretation of 41Ca data using compartmental modeling in post-menopausal women Ca (dpeaa)DE-He213 Compartmental modeling (dpeaa)DE-He213 Bone resorption (dpeaa)DE-He213 Bone balance (dpeaa)DE-He213 Dynamic simulation (dpeaa)DE-He213 |
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Interpretation of 41Ca data using compartmental modeling in post-menopausal women |
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Lee, Wang-Hee |
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Analytical and bioanalytical chemistry |
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Lee, Wang-Hee Wastney, Meryl E. Jackson, George S. Martin, Berdine R. Weaver, Connie M. |
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Lee, Wang-Hee |
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interpretation of 41ca data using compartmental modeling in post-menopausal women |
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Interpretation of 41Ca data using compartmental modeling in post-menopausal women |
| abstract |
Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. © Springer-Verlag 2010 |
| abstractGer |
Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. © Springer-Verlag 2010 |
| abstract_unstemmed |
Abstract Calcium-41 (t1/2 = $ 10^{5} $ years) can be used after a single dose to follow calcium metabolism over a subject's lifetime. The aims of this study were to expand a 41Ca kinetic model and estimate bone resorption in women with stable bone loss, compare the rates with those calculated with classical isotope studies, and to use the model to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance for the design and interpretation of 41Ca studies. Forty-two women >5 years post-menopause were given 41Ca intravenously. Bone mineral content and bone mineral density of total body were measured by dual-energy X-ray absorptiometry at the beginning of the study. Urine collections were made periodically for up to ∼5 years while subjects were free living. Urinary 41Ca:Ca ratios were measured using accelerator mass spectrometry. The isotope data were analyzed by compartmental modeling. Four compartments were necessary to fit the urinary tracer data and total bone calcium. The final model included pathways for absorption, distribution, urinary excretion, and endogenous excretion and was used to calculate rates of bone turnover. Estimates of bone resorption in a subset of the women (n = 13), studied previously in a 3-week balance and full kinetic study with 45Ca, agreed with those using 41Ca methodology. Thus, rates of bone resorption can be estimated from 41Ca urinary data in stable post-menopausal women. The model was used to simulate dynamic changes in urinary 41Ca:Ca ratios and bone balance, as a result of interventions that perturb calcium metabolism to aid in study design and interpretation. © Springer-Verlag 2010 |
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Interpretation of 41Ca data using compartmental modeling in post-menopausal women |
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https://dx.doi.org/10.1007/s00216-010-4454-5 |
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Wastney, Meryl E. Jackson, George S. Martin, Berdine R. Weaver, Connie M. |
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| score |
7.401045 |