Rybak ME - Search Results

1

Higher urinary lignan concentrations in women but not men are positively associated with shorter time to pregnancy.

Mumford SL, Sundaram R, Schisterman EF, Sweeney AM, Barr DB, Rybak ME, Maisog JM, Parker DL, Pfeiffer CM, Louis GM. Mumford SL, et al. Among authors: rybak me. J Nutr. 2014 Mar;144(3):352-8. doi: 10.3945/jn.113.184820. Epub 2014 Jan 8. J Nutr. 2014. PMID: 24401816 Free PMC article.

2

Clinical analysis of vitamin B(6): determination of pyridoxal 5'-phosphate and 4-pyridoxic acid in human serum by reversed-phase high-performance liquid chromatography with chlorite postcolumn derivatization.

Rybak ME, Pfeiffer CM. Rybak ME, et al. Anal Biochem. 2004 Oct 15;333(2):336-44. doi: 10.1016/j.ab.2004.06.036. Anal Biochem. 2004. PMID: 15450810

3

Clinical vitamin B6 analysis: an interlaboratory comparison of pyridoxal 5'-phosphate measurements in serum.

Rybak ME, Jain RB, Pfeiffer CM. Rybak ME, et al. Clin Chem. 2005 Jul;51(7):1223-31. doi: 10.1373/clinchem.2005.050278. Epub 2005 May 19. Clin Chem. 2005. PMID: 15905311

4

Determination of urinary phytoestrogens by HPLC-MS/MS: a comparison of atmospheric pressure chemical ionization (APCI) and electrospray ionization (ESI).

Rybak ME, Parker DL, Pfeiffer CM. Rybak ME, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2008 Jan 1;861(1):145-50. doi: 10.1016/j.jchromb.2007.11.013. Epub 2007 Nov 21. J Chromatogr B Analyt Technol Biomed Life Sci. 2008. PMID: 18068558

5

A simplified protein precipitation and filtration procedure for determining serum vitamin B6 by high-performance liquid chromatography.

Rybak ME, Pfeiffer CM. Rybak ME, et al. Anal Biochem. 2009 May 1;388(1):175-7. doi: 10.1016/j.ab.2009.02.014. Epub 2009 Feb 14. Anal Biochem. 2009. PMID: 19232315

6

Investigation of relationships between urinary biomarkers of phytoestrogens, phthalates, and phenols and pubertal stages in girls.

Wolff MS, Teitelbaum SL, Pinney SM, Windham G, Liao L, Biro F, Kushi LH, Erdmann C, Hiatt RA, Rybak ME, Calafat AM; Breast Cancer and Environment Research Centers. Wolff MS, et al. Among authors: rybak me. Environ Health Perspect. 2010 Jul;118(7):1039-46. doi: 10.1289/ehp.0901690. Epub 2010 Mar 22. Environ Health Perspect. 2010. PMID: 20308033 Free PMC article.

7

Phytoestrogen biomonitoring: an extractionless LC-MS/MS method for measuring urinary isoflavones and lignans by use of atmospheric pressure photoionization (APPI).

Parker DL, Rybak ME, Pfeiffer CM. Parker DL, et al. Among authors: rybak me. Anal Bioanal Chem. 2012 Jan;402(3):1123-36. doi: 10.1007/s00216-011-5550-x. Epub 2011 Nov 29. Anal Bioanal Chem. 2012. PMID: 22124753 Free PMC article.

8

Dietary supplement use and smoking are important correlates of biomarkers of water-soluble vitamin status after adjusting for sociodemographic and lifestyle variables in a representative sample of U.S. adults.

Pfeiffer CM, Sternberg MR, Schleicher RL, Rybak ME. Pfeiffer CM, et al. Among authors: rybak me. J Nutr. 2013 Jun;143(6):957S-65S. doi: 10.3945/jn.112.173021. Epub 2013 Apr 10. J Nutr. 2013. PMID: 23576641 Free PMC article.

9

The CDC's Second National Report on Biochemical Indicators of Diet and Nutrition in the U.S. Population is a valuable tool for researchers and policy makers.

Pfeiffer CM, Sternberg MR, Schleicher RL, Haynes BM, Rybak ME, Pirkle JL. Pfeiffer CM, et al. Among authors: rybak me. J Nutr. 2013 Jun;143(6):938S-47S. doi: 10.3945/jn.112.172858. Epub 2013 Apr 17. J Nutr. 2013. PMID: 23596164 Free PMC article.

10

Sociodemographic and lifestyle variables are compound- and class-specific correlates of urine phytoestrogen concentrations in the U.S. population.

Rybak ME, Sternberg MR, Pfeiffer CM. Rybak ME, et al. J Nutr. 2013 Jun;143(6):986S-94S. doi: 10.3945/jn.112.172981. Epub 2013 Apr 17. J Nutr. 2013. PMID: 23596167 Free PMC article.

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