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Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays - impact of 3-epi-25-hydroxyvitamin D.

Analytical and bioanalytical chemistry

Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Hoofnagle AN, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Meadows S, Cox L, Robyak K, Creer MH, Fitzgerald R, Clarke MW, Breen N, Lukas P, Cavalier É, Sempos CT.
PMID: 34432104
Anal Bioanal Chem. 2022 Jan;414(1):333-349. doi: 10.1007/s00216-021-03576-1. Epub 2021 Aug 25.

An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays used for the determination of serum total 25-hydroxyvitamin D (25(OH)D), which is the...

Weight Loss Comparison of Gastric Bypass and Silastictrade mark Ring Vertical Gastroplasty.

Obesity surgery

Zimmerman V, Campos CT, Buchwald H.
PMID: 10765163
Obes Surg. 1992 Feb;2(1):47-49. doi: 10.1381/096089292765560547.

Thirty-five patients who had undergone primary bariatric surgery between 14 January 1988 and 16 September 1990 were selected for retrospective analysis based on the availability of 3-month and 1-year (+/- 3 months) follow-up visit records. Fourteen patients had undergone...

Molecules under external electric field: On the changes in the electronic structure and validity limits of the theoretical predictions.

Journal of computational chemistry

Pansini FNN, de Souza FAL, Campos CT.
PMID: 29676469
J Comput Chem. 2018 Jul 30;39(20):1561-1567. doi: 10.1002/jcc.25229. Epub 2018 Apr 20.

A detailed analysis of the electronic structure of the ground and first excited spin state of three diatomic molecules ( N2, BH and CO) under static applied electric field is performed at CCSD(T), DFT, MRCI and MRCI(Q) levels of...

All-electron basis sets augmented with diffuse functions for He, Ca, Sr, Ba, and lanthanides: application in calculations of atomic and molecular properties.

Journal of molecular modeling

Ferreira IB, Campos CT, Jorge FE.
PMID: 32266481
J Mol Model. 2020 Apr 07;26(5):95. doi: 10.1007/s00894-020-04365-w.

Non-relativistic and Douglas-Kroll-Hess (DKH) basis sets augmented with diffuse functions for He, Ca, Sr, Ba, and lanthanides are generated. These sets are appropriated to describe electrons away from the nuclei. Using the DKH augmented sets along with the B3LYP...

Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 2 ligand binding assays - impact of 25-hydroxyvitamin D.

Analytical and bioanalytical chemistry

Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Batista MC, Pham H, Bennett A, Jansen E, Khan DA, Kilbane M, Twomey PJ, Freeman J, Parker N, Mushtaq S, Simpson C, Lukas P, Cavalier É, Sempos CT.
PMID: 34435207
Anal Bioanal Chem. 2022 Jan;414(1):351-366. doi: 10.1007/s00216-021-03577-0. Epub 2021 Aug 25.

An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of ligand binding assays (Part 2) for the determination of serum total 25-hydroxyvitamin D [25(OH)D]. Fifty single-donor samples were assigned target values...

Intra-trial mean 25(OH)D and PTH levels and risk of falling in older men and women in the Boston STOP IT trial.

The Journal of clinical endocrinology and metabolism

Dawson-Hughes B, Wang J, Barger K, Bischoff-Ferrari HA, Sempos CT, Durazo-Arvizu RA, Ceglia L.
PMID: 35022738
J Clin Endocrinol Metab. 2022 Jan 12; doi: 10.1210/clinem/dgac012. Epub 2022 Jan 12.

CONTEXT: Supplementation with vitamin D has the potential to both reduce and increase risk of falling, and parathyroid hormone (PTH) may contribute to fall risk.OBJECTIVE: To assess the associations of intra-trial mean circulating levels of 25-hydroxyvitamin D [25(OH)D] and...

Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays - impact of 3-epi-25-hydroxyvitamin D.

Analytical and bioanalytical chemistry

Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Hoofnagle AN, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Meadows S, Cox L, Robyak K, Creer MH, Fitzgerald R, Clarke MW, Breen N, Lukas P, Cavalier É, Sempos CT.
PMID: 34432104
Anal Bioanal Chem. 2021 Aug 25; doi: 10.1007/s00216-021-03576-1. Epub 2021 Aug 25.

An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays used for the determination of serum total 25-hydroxyvitamin D (25(OH)D), which is the...

Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions.

Analytical and bioanalytical chemistry

Sempos CT, Williams EL, Carter GD, Jones J, Camara JE, Burdette CQ, Hahm G, Nalin F, Duewer DL, Kuszak AJ, Merkel J, Hoofnagle AN, Lukas P, Cavalier É, Durazo-Arvizu RA, Crump PM, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Batista MC, Meadows S, Cox L, Jansen E, Khan DA, Robyak K, Creer MH, Kilbane M, Twomey PJ, Freeman J, Parker N, Yuan J, Fitzgerald R, Mushtaq S, Clarke MW, Breen N, Simpson C, Wise SA.
PMID: 34750644
Anal Bioanal Chem. 2021 Nov 09; doi: 10.1007/s00216-021-03742-5. Epub 2021 Nov 09.

The Vitamin D External Quality Assessment Scheme (DEQAS) distributes human serum samples four times per year to over 1000 participants worldwide for the determination of total serum 25-hydroxyvitamin D [25(OH)D)]. These samples are stored at -40 °C prior to...

Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 2 ligand binding assays - impact of 25-hydroxyvitamin D.

Analytical and bioanalytical chemistry

Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Batista MC, Pham H, Bennett A, Jansen E, Khan DA, Kilbane M, Twomey PJ, Freeman J, Parker N, Mushtaq S, Simpson C, Lukas P, Cavalier É, Sempos CT.
PMID: 34435207
Anal Bioanal Chem. 2022 Jan;414(1):351-366. doi: 10.1007/s00216-021-03577-0. Epub 2021 Aug 25.

An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of ligand binding assays (Part 2) for the determination of serum total 25-hydroxyvitamin D [25(OH)D]. Fifty single-donor samples were assigned target values...

Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays - impact of 3-epi-25-hydroxyvitamin D.

Analytical and bioanalytical chemistry

Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Hoofnagle AN, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Meadows S, Cox L, Robyak K, Creer MH, Fitzgerald R, Clarke MW, Breen N, Lukas P, Cavalier É, Sempos CT.
PMID: 34432104
Anal Bioanal Chem. 2022 Jan;414(1):333-349. doi: 10.1007/s00216-021-03576-1. Epub 2021 Aug 25.

An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays used for the determination of serum total 25-hydroxyvitamin D (25(OH)D), which is the...

Iron status and the risk of coronary heart disease: an example of the use of nutritional epidemiology in chronic disease research.

The Journal of nutritional biochemistry

Sempos CT, Looker AC.
PMID: 11257466
J Nutr Biochem. 2001 Mar;12(3):170-182. doi: 10.1016/s0955-2863(00)00153-4.

No abstract available.

Serum unmetabolized folic acid in a nationally representative sample of adults ≥60 years in the United States, 2001-2002.

Food & nutrition research

Bailey RL, Mills JL, Yetley EA, Gahche JJ, Pfeiffer CM, Dwyer JT, Dodd KW, Sempos CT, Betz JM, Picciano MF.
PMID: 22489216
Food Nutr Res. 2012;56. doi: 10.3402/fnr.v56i0.5616. Epub 2012 Apr 02.

No abstract available.

Showing 1 to 12 of 20 entries