Dirks NF - Search Results

1

Vitamin D: marker, measurand & measurement.

Dirks NF, Cavalier E, Heijboer AC. Dirks NF, et al. Endocr Connect. 2023 Mar 15;12(4):e220269. doi: 10.1530/EC-22-0269. Print 2023 Apr 1. Endocr Connect. 2023. PMID: 36688810 Free PMC article. Review.

2

Determination of human reference values for serum total 1,25-dihydroxyvitamin D using an extensively validated 2D ID-UPLC-MS/MS method.

Dirks NF, Martens F, Vanderschueren D, Billen J, Pauwels S, Ackermans MT, Endert E, Heijer MD, Blankenstein MA, Heijboer AC. Dirks NF, et al. J Steroid Biochem Mol Biol. 2016 Nov;164:127-133. doi: 10.1016/j.jsbmb.2015.12.003. Epub 2015 Dec 10. J Steroid Biochem Mol Biol. 2016. PMID: 26690787

3

Effects of 1,25(OH)2 D3 and 25(OH)D3 on C2C12 Myoblast Proliferation, Differentiation, and Myotube Hypertrophy.

van der Meijden K, Bravenboer N, Dirks NF, Heijboer AC, den Heijer M, de Wit GM, Offringa C, Lips P, Jaspers RT. van der Meijden K, et al. Among authors: dirks nf. J Cell Physiol. 2016 Nov;231(11):2517-28. doi: 10.1002/jcp.25388. Epub 2016 Apr 14. J Cell Physiol. 2016. PMID: 27018098 Free PMC article.

4

Various calibration procedures result in optimal standardization of routinely used 25(OH)D ID-LC-MS/MS methods.

Dirks NF, Vesper HW, van Herwaarden AE, van den Ouweland JM, Kema IP, Krabbe JG, Heijboer AC. Dirks NF, et al. Clin Chim Acta. 2016 Nov 1;462:49-54. doi: 10.1016/j.cca.2016.08.016. Epub 2016 Aug 25. Clin Chim Acta. 2016. PMID: 27570062 Free PMC article.

5

The When, What & How of Measuring Vitamin D Metabolism in Clinical Medicine.

Dirks NF, Ackermans MT, Lips P, de Jongh RT, Vervloet MG, de Jonge R, Heijboer AC. Dirks NF, et al. Nutrients. 2018 Apr 13;10(4):482. doi: 10.3390/nu10040482. Nutrients. 2018. PMID: 29652819 Free PMC article. Review.

6

A decrease in vitamin D levels is associated with methotrexate-induced oral mucositis in children with acute lymphoblastic leukemia.

Oosterom N, Dirks NF, Heil SG, de Jonge R, Tissing WJE, Pieters R, van den Heuvel-Eibrink MM, Heijboer AC, Pluijm SMF. Oosterom N, et al. Among authors: dirks nf. Support Care Cancer. 2019 Jan;27(1):183-190. doi: 10.1007/s00520-018-4312-0. Epub 2018 Jun 19. Support Care Cancer. 2019. PMID: 29922939 Free PMC article.

7

Pre-analytical stability of FGF23 with the contemporary immunoassays.

Dirks NF, Smith ER, van Schoor NM, Vervloet MG, Ackermans MT, de Jonge R, Heijboer AC. Dirks NF, et al. Clin Chim Acta. 2019 Jun;493:104-106. doi: 10.1016/j.cca.2019.02.032. Epub 2019 Mar 1. Clin Chim Acta. 2019. PMID: 30826370

8

Reference values for 24,25-dihydroxyvitamin D and the 25-hydroxyvitamin D/24,25-dihydroxyvitamin D ratio.

Dirks NF, Ackermans MT, de Jonge R, Heijboer AC. Dirks NF, et al. Clin Chem Lab Med. 2019 Sep 25;57(10):e259-e261. doi: 10.1515/cclm-2018-1096. Clin Chem Lab Med. 2019. PMID: 30903750 No abstract available.

9

The Effect of Vitamin D Supplementation on its Metabolism and the Vitamin D Metabolite Ratio.

Francic V, Ursem SR, Dirks NF, Keppel MH, Theiler-Schwetz V, Trummer C, Pandis M, Borzan V, Grübler MR, Verheyen ND, März W, Tomaschitz A, Pilz S, Heijboer AC, Obermayer-Pietsch B. Francic V, et al. Among authors: dirks nf. Nutrients. 2019 Oct 21;11(10):2539. doi: 10.3390/nu11102539. Nutrients. 2019. PMID: 31640241 Free PMC article. Clinical Trial.

10

We need to talk about the analytical performance of our laboratory developed clinical LC-MS/MS tests, and start separating the wheat from the chaff.

Dirks NF, Ackermans MT, Martens F, Cobbaert CM, de Jonge R, Heijboer AC. Dirks NF, et al. Clin Chim Acta. 2021 Mar;514:80-83. doi: 10.1016/j.cca.2020.12.020. Epub 2020 Dec 22. Clin Chim Acta. 2021. PMID: 33359058 Free article.

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