My Bibliography

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Characterization of iron status biomarkers and hematological indices among young adults of East Asian or Northern European ancestry from FeGenes: A cross-sectional study. The American journal of clinical nutrition. . NIHMSID: NIHMS2036394.

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Iron regulatory hormones and their associations with iron status biomarkers among healthy adults of East Asian or Northern European ancestry: A cross-sectional comparison from the Iron Genes in East Asian and Northern European Adults Study (FeGenes). The American journal of clinical nutrition. . NIHMSID: NIHMS2038178.

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Differences in nonheme iron absorption between healthy adults of East Asian or Northern European ancestry from the Iron Genes in East Asian and Northern European Adults Study (FeGenes): A cross-sectional stable iron isotope study. The American journal of clinical nutrition. . NIHMSID: NIHMS2040890.

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Placental ferroportin protein abundance is associated with neonatal erythropoietic activity and iron status in newborns at high risk for iron deficiency and anemia. The American journal of clinical nutrition. . NIHMSID: NIHMS1945813.doi: 10.1016/j.ajcnut.2023.10.022.

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Vicchio D, Yergey A, O'Brien K, Allen L, Ray R, Holick M. Quantification and kinetics of 25-hydroxyvitamin D3 by isotope dilution liquid chromatography/thermospray mass spectrometry. Biol Mass Spectrom. 1993 Jan;22(1):53-8. doi: 10.1002/bms.1200220107. PubMed PMID: 8431502.

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O'Brien KO, Allen LH, Quatromoni P, Siu-Caldera ML, Vieira NE, Perez A, Holick MF, Yergey AL. High fiber diets slow bone turnover in young men but have no effect on efficiency of intestinal calcium absorption. J Nutr. 1993 Dec;123(12):2122-8. doi: 10.1093/jn/123.12.2122. PubMed PMID: 8263606.

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Specker BL, Vieira NE, O'Brien KO, Ho ML, Heubi JE, Abrams SA, Yergey AL. Calcium kinetics in lactating women with low and high calcium intakes. Am J Clin Nutr. 1994 Mar;59(3):593-9. doi: 10.1093/ajcn/59.3.593. PubMed PMID: 8116535.

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O'Brien KO, Abrams SA. Effects of development on techniques for calcium stable isotope studies in children. Biol Mass Spectrom. 1994 Jun;23(6):357-61. doi: 10.1002/bms.1200230610. PubMed PMID: 8038229.

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Perez MD, Abrams SA, Koenning G, Stuff JE, O'Brien KO, Ellis KJ. Mineral metabolism in children with dermatomyositis. J Rheumatol. 1994 Dec;21(12):2364-9. PubMed PMID: 7699644.

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Abrams SA, Wen J, O'Brien KO, Stuff JE, Liang LK. Application of magnetic sector thermal ionization mass spectrometry to studies of erythrocyte iron incorporation in small children. Biol Mass Spectrom. 1994 Dec;23(12):771-5. doi: 10.1002/bms.1200231209. PubMed PMID: 7841211.

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Abrams SA, O'brien KO, Liang LK, Stuff JE. Differences in calcium absorption and kinetics between black and white girls aged 5-16 years. J Bone Miner Res. 1995 May;10(5):829-33. doi: 10.1002/jbmr.5650100521. PubMed PMID: 7639119.

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Abrams SA, O'Brien KO, Wen J, Liang LK, Stuff JE. Absorption by 1-year-old children of an iron supplement given with cow's milk or juice. Pediatr Res. 1996 Jan;39(1):171-5. doi: 10.1203/00006450-199601000-00027. PubMed PMID: 8825405.

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O'Brien KO, Abrams SA, Liang LK, Ellis KJ, Gagel RF. Increased efficiency of calcium absorption during short periods of inadequate calcium intake in girls. Am J Clin Nutr. 1996 Apr;63(4):579-83. doi: 10.1093/ajcn/63.4.579. PubMed PMID: 8599323.

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Abrams SA, O'Brien KO, Stuff JE. Changes in calcium kinetics associated with menarche. J Clin Endocrinol Metab. 1996 Jun;81(6):2017-20. doi: 10.1210/jcem.81.6.8964820. PubMed PMID: 8964820.

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O'Brien KO, Abrams SA, Stuff JE, Liang LK, Welch TR. Variables related to urinary calcium excretion in young girls. J Pediatr Gastroenterol Nutr. 1996 Jul;23(1):8-12. doi: 10.1097/00005176-199607000-00002. PubMed PMID: 8811516.

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Abrams SA, Grusak MA, Stuff J, O'Brien KO. Calcium and magnesium balance in 9-14-y-old children. Am J Clin Nutr. 1997 Nov;66(5):1172-7. doi: 10.1093/ajcn/66.5.1172. PubMed PMID: 9356535.

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O'Brien KO, Abrams SA, Liang LK, Ellis KJ, Gagel RF. Bone turnover response to changes in calcium intake is altered in girls and adult women in families with histories of osteoporosis. J Bone Miner Res. 1998 Mar;13(3):491-9. doi: 10.1359/jbmr.1998.13.3.491. PubMed PMID: 9525350.

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O'Brien KO. Combined calcium and vitamin D supplementation reduces bone loss and fracture incidence in older men and women. Nutr Rev. 1998 May;56(5 Pt 1):148-50. doi: 10.1111/j.1753-4887.1998.tb01740.x. Review. PubMed PMID: 9624885.

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Kerstetter JE, O'Brien KO, Insogna KL. Dietary protein affects intestinal calcium absorption. Am J Clin Nutr. 1998 Oct;68(4):859-65. doi: 10.1093/ajcn/68.4.859. PubMed PMID: 9771863.

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O'Brien KO, Zavaleta N, Caulfield LE, Yang DX, Abrams SA. Influence of prenatal iron and zinc supplements on supplemental iron absorption, red blood cell iron incorporation, and iron status in pregnant Peruvian women. Am J Clin Nutr. 1999 Mar;69(3):509-15. doi: 10.1093/ajcn/69.3.509. PubMed PMID: 10075338.

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Mauras N, Hayes VY, Vieira NE, Yergey AL, O'Brien KO. Profound hypogonadism has significant negative effects on calcium balance in males: a calcium kinetic study. J Bone Miner Res. 1999 Apr;14(4):577-82. doi: 10.1359/jbmr.1999.14.4.577. PubMed PMID: 10234579.

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O'Brien KO. Regulation of mineral metabolism from fetus to infant: metabolic studies. Acta Paediatr Suppl. 1999 Dec;88(433):88-91. doi: 10.1111/j.1651-2227.1999.tb14411.x. Review. PubMed PMID: 10626553.

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Mauras N, O'Brien KO, Welch S, Rini A, Helgeson K, Vieira NE, Yergey AL. Insulin-like growth factor I and growth hormone (GH) treatment in GH-deficient humans: differential effects on protein, glucose, lipid, and calcium metabolism. J Clin Endocrinol Metab. 2000 Apr;85(4):1686-94. doi: 10.1210/jcem.85.4.6541. PubMed PMID: 10770216.

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Mauras N, O'Brien KO, Klein KO, Hayes V. Estrogen suppression in males: metabolic effects. J Clin Endocrinol Metab. 2000 Jul;85(7):2370-7. doi: 10.1210/jcem.85.7.6676. PubMed PMID: 10902781.

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O'Brien KO, Zavaleta N, Caulfield LE, Wen J, Abrams SA. Prenatal iron supplements impair zinc absorption in pregnant Peruvian women. J Nutr. 2000 Sep;130(9):2251-5. doi: 10.1093/jn/130.9.2251. PubMed PMID: 10958820.

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Mauras N, Hayes V, O'Brien KO. Estrogen treatment and estrogen suppression: metabolic effects in adolescence. J Pediatr Endocrinol Metab. 2000;13 Suppl 6:1431-7. doi: 10.1515/jpem-2000-s618. Review. PubMed PMID: 11202220.

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O'Brien KO, Razavi M, Henderson RA, Caballero B, Ellis KJ. Bone mineral content in girls perinatally infected with HIV. Am J Clin Nutr. 2001 Apr;73(4):821-6. doi: 10.1093/ajcn/73.4.821. PubMed PMID: 11273859.

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Constantinides CD, Kraitchman DL, O'Brien KO, Boada FE, Gillen J, Bottomley PA. Noninvasive quantification of total sodium concentrations in acute reperfused myocardial infarction using 23Na MRI. Magn Reson Med. 2001 Dec;46(6):1144-51. doi: 10.1002/mrm.1311. PubMed PMID: 11746581.

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Kerstetter JE, O'Brien KO, Insogna KL. Low protein intake: the impact on calcium and bone homeostasis in humans. J Nutr. 2003 Mar;133(3):855S-861S. doi: 10.1093/jn/133.3.855S. Review. PubMed PMID: 12612169.

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O'Brien KO, Zavaleta N, Abrams SA, Caulfield LE. Maternal iron status influences iron transfer to the fetus during the third trimester of pregnancy. Am J Clin Nutr. 2003 Apr;77(4):924-30. doi: 10.1093/ajcn/77.4.924. PubMed PMID: 12663293.

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Chang SC, O'Brien KO, Nathanson MS, Caulfield LE, Mancini J, Witter FR. Fetal femur length is influenced by maternal dairy intake in pregnant African American adolescents. Am J Clin Nutr. 2003 May;77(5):1248-54. doi: 10.1093/ajcn/77.5.1248. PubMed PMID: 12716679.

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Schulze KJ, O'Brien KO, Germain-Lee EL, Baer DJ, Leonard A, Rosenstein BJ. Efficiency of calcium absorption is not compromised in clinically stable prepubertal and pubertal girls with cystic fibrosis. Am J Clin Nutr. 2003 Jul;78(1):110-6. doi: 10.1093/ajcn/78.1.110. PubMed PMID: 12816779.

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Chang SC, O'Brien KO, Nathanson MS, Mancini J, Witter FR. Hemoglobin concentrations influence birth outcomes in pregnant African-American adolescents. J Nutr. 2003 Jul;133(7):2348-55. doi: 10.1093/jn/133.7.2348. PubMed PMID: 12840205.

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Chang SC, O'Brien KO, Nathanson MS, Mancini J, Witter FR. Characteristics and risk factors for adverse birth outcomes in pregnant black adolescents. J Pediatr. 2003 Aug;143(2):250-7. doi: 10.1067/S0022-3476(03)00363-9. PubMed PMID: 12970642.

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Kerstetter JE, O'Brien KO, Insogna KL. Dietary protein, calcium metabolism, and skeletal homeostasis revisited. Am J Clin Nutr. 2003 Sep;78(3 Suppl):584S-592S. doi: 10.1093/ajcn/78.3.584S. Review. PubMed PMID: 12936953.

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O'Brien KO, Nathanson MS, Mancini J, Witter FR. Calcium absorption is significantly higher in adolescents during pregnancy than in the early postpartum period. Am J Clin Nutr. 2003 Dec;78(6):1188-93. doi: 10.1093/ajcn/78.6.1188. PubMed PMID: 14668282.

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Schulze KJ, O'brien KO, Germain-Lee EL, Baer DJ, Leonard AL, Rosenstein BJ. Endogenous fecal losses of calcium compromise calcium balance in pancreatic-insufficient girls with cystic fibrosis. J Pediatr. 2003 Dec;143(6):765-71. doi: 10.1067/S0022-3476(03)00539-0. PubMed PMID: 14657825.

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Schulze KJ, O'Brien KO, Germain-Lee EL, Booth SL, Leonard A, Rosenstein BJ. Calcium kinetics are altered in clinically stable girls with cystic fibrosis. J Clin Endocrinol Metab. 2004 Jul;89(7):3385-91. doi: 10.1210/jc.2003-031879. PubMed PMID: 15240619.

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Bezerra FF, Mendonça LM, Lobato EC, O'Brien KO, Donangelo CM. Bone mass is recovered from lactation to postweaning in adolescent mothers with low calcium intakes. Am J Clin Nutr. 2004 Nov;80(5):1322-6. doi: 10.1093/ajcn/80.5.1322. PubMed PMID: 15531682.

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Smith SM, Wastney ME, O'Brien KO, Morukov BV, Larina IM, Abrams SA, Davis-Street JE, Oganov V, Shackelford LC. Bone markers, calcium metabolism, and calcium kinetics during extended-duration space flight on the mir space station. J Bone Miner Res. 2005 Feb;20(2):208-18. doi: 10.1359/JBMR.041105. Epub 2004 Nov 8. PubMed PMID: 15647814.

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Kerstetter JE, O'Brien KO, Caseria DM, Wall DE, Insogna KL. The impact of dietary protein on calcium absorption and kinetic measures of bone turnover in women. J Clin Endocrinol Metab. 2005 Jan;90(1):26-31. doi: 10.1210/jc.2004-0179. Epub 2004 Nov 16. PubMed PMID: 15546911.

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Aris RM, Merkel PA, Bachrach LK, Borowitz DS, Boyle MP, Elkin SL, Guise TA, Hardin DS, Haworth CS, Holick MF, Joseph PM, O'Brien K, Tullis E, Watts NB, White TB. Guide to bone health and disease in cystic fibrosis. J Clin Endocrinol Metab. 2005 Mar;90(3):1888-96. doi: 10.1210/jc.2004-1629. Epub 2004 Dec 21. Review. PubMed PMID: 15613415.

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Abrams SA, O'Brien KO. Calcium and bone mineral metabolism in children with chronic illnesses. Annu Rev Nutr. 2004;24:13-32. doi: 10.1146/annurev.nutr.24.012003.132135. Review. PubMed PMID: 15189111.

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Iannotti LL, O'Brien KO, Chang SC, Mancini J, Schulman-Nathanson M, Liu S, Harris ZL, Witter FR. Iron deficiency anemia and depleted body iron reserves are prevalent among pregnant African-American adolescents. J Nutr. 2005 Nov;135(11):2572-7. doi: 10.1093/jn/135.11.2572. PubMed PMID: 16251613.

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O'Brien KO, Donangelo CM, Zapata CL, Abrams SA, Spencer EM, King JC. Bone calcium turnover during pregnancy and lactation in women with low calcium diets is associated with calcium intake and circulating insulin-like growth factor 1 concentrations. Am J Clin Nutr. 2006 Feb;83(2):317-23. doi: 10.1093/ajcn/83.2.317. PubMed PMID: 16469990.

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Schulze KJ, Cutchins C, Rosenstein BJ, Germain-Lee EL, O'Brien KO. Calcium acquisition rates do not support age-appropriate gains in total body bone mineral content in prepuberty and late puberty in girls with cystic fibrosis. Osteoporos Int. 2006;17(5):731-40. doi: 10.1007/s00198-005-0041-6. Epub 2006 Feb 28. PubMed PMID: 16505982.

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Nielsen JN, O'Brien KO, Witter FR, Chang SC, Mancini J, Nathanson MS, Caulfield LE. High gestational weight gain does not improve birth weight in a cohort of African American adolescents. Am J Clin Nutr. 2006 Jul;84(1):183-9. doi: 10.1093/ajcn/84.1.183. PubMed PMID: 16825694.

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Kerstetter JE, Wall DE, O'Brien KO, Caseria DM, Insogna KL. Meat and soy protein affect calcium homeostasis in healthy women. J Nutr. 2006 Jul;136(7):1890-5. doi: 10.1093/jn/136.7.1890. PubMed PMID: 16772455.

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Rovner AJ, O'Brien KO. Hypovitaminosis D among healthy children in the United States: a review of the current evidence. Arch Pediatr Adolesc Med. 2008 Jun;162(6):513-9. doi: 10.1001/archpedi.162.6.513. Review. PubMed PMID: 18524740.

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Atkinson SA, McCabe GP, Weaver CM, Abrams SA, O'Brien KO. Are current calcium recommendations for adolescents higher than needed to achieve optimal peak bone mass? The controversy. J Nutr. 2008 Jun;138(6):1182-6. doi: 10.1093/jn/138.6.1182. PubMed PMID: 18492854.