Abstract
Objective
In light of the recommendation of folic acid supplementation in chronic hemolytic anemia, with possible supratherapeutic dosing and associated side effects, we performed this study to investigate serum folate levels in children with chronic hemolytic anemia.
Methods
Phase 1 was a cross-sectional study of 134 patients in the Pediatric Hematology service, documenting daily dosage and performing serum folate levels. In phase 2, we reduced the dose to 1 mg for 148 patients and repeated the testing after six months.
Results
We found very high serum folate levels with Phase 1, with 93.2% above the upper level of normal. In Phase 2, values remained high with 42.5% above the acceptable upper limit.
Conclusions
Doses of folic acid given to sickle cell and thalassemia patients exceed their actual needs. This should be re-evaluated to strike a balance between benefit and harm, with close monitoring of serum folate levels.
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References
Hazra A, Tripathi SK. Folic acid revisited. Indian J Pharmacol. 2001;33:322–42.
Kennedy TS, Fung EB, Kawchak DA, Zemel BS, Ohene-Frempong K, Stallings VA. Red blood cell folate and serum vitamin B12 status in children with sickle cell disease. J Pediatr Hematol Oncol. 2001;23:165–9.
Liu YK. Folic acid deficiency in sickle cell anaemia. Scand J Haematol. 1975;14:71–9.
van der Dijs FP, Schnog JJ, Brouwer DA, Velvis HJ, van den Berg GA, Bakker AJ, et al. Elevated homocysteine levels indicate suboptimal folate status in pediatric sickle cell patients. Am J Hematol. 1998;59:192–8.
Dixit R, Nettem S, Madan SS, Soe HHK, Abas AB, Vance LD, et al. Folate supplementation in people with sickle cell disease. Cochrane Database Syst Rev. 2018;3:CD011130.
Fischbach F, Dunning MB. Manual of Laboratory and Diagnostic Tests. 8th ed. Philadelphia: Lippincott Williams & Wilkins; 2008.
Gall S, Seal J, Taylor R, Dwyer T, Venn A. Folate status and socio-demographic predictors of folate status, among a national cohort of women aged 26–36 in Australia, 2004–2006. Aust N Z J Public Health. 2012;36:421–6.
Matsuzaki M, Haruna M, Ota E, Sasaki S, Nagai Y, Murashima S. Dietary folate intake, use of folate supplements, lifestyle factors, and serum folate levels among pregnant women in Tokyo, Japan. J Obstet Gynaecol Res. 2008;34:971–9.
Dhar M, Bellevue R, Carmel R. Pernicious anemia with neuropsychiatric dysfunction in a patient with sickle cell anemia treated with folate supplementation. N Engl J Med. 2003;348:2204–7.
Smith AD, Kim Y, Refsum Y. Is folic acid good for everyone? Am J Clin Nutr. 2008;87:517–33.
Conley CL, Krevans JR. Development of neurologic manifestations of pernicious anemia during multivitamin therapy. N Engl J Med 1951;245:529–31.
Rosenberg IH. Science-based micronutrient fortification: which nutrients, how much, and how to know? Am J Clin Nutr. 2005;82:279–80.
Claster S, Wood JC, Noetzli L, Carson SM, Hofstra TC, Khanna R, et al. Nutritional deficiencies in iron overloaded patients with hemoglobinopathies. Am J Hematol. 2009;84:344–8.
Kim YI. Does a high folate intake increase the risk of breast cancer? Nutr Rev. 2006;64:468–75.
Kim SJ, Zuchniak A, Sohn KJ, Lubinski J, Demsky R, Eisen A, et al. Plasma folate, vitamin B-6, and vitamin B-12 and breast cancer risk in BRCA1- and BRCA2-mutation carriers: A prospective study. Am J Clin Nutr. 2016;104:671–7.
Tomaszewski JJ, Cummings JL, Parwani AV, Dhir R, Mason JB, Nelson JB, et al. Increased cancer cell proliferation in prostate cancer patients with high levels of serum folate. Prostate. 2011;71:1287–93.
Castillo-L C, Tur JA, Uauy R. Folate and breast cancer risk: A systematic review. Rev Med Chil. 2012;140:251–60.
Venn BJ, Mann JI, Williams SM, Riddell LJ, Chisholm A, Harper MJ, et al. Assessment of three levels of folic acid on serum folate and plasma homocysteine: A randomised placebo-controlled double-blind dietary intervention trial. Eur J Clin Nutr. 2002;56:748–54.
Pena AS, Maftei O, Dowling K, Gent R, Wiltshire E, MacKenzie K, et al. Folate fortification and supplementation do not provide vascular health benefits in type 1 diabetes. J Pediatr. 2013;163:255–60.
Nguyen GT, Lewis A, Goldener C, Reed B, Dulman RY, Yang E. Discontinuation of folic acid supplementation in young patients with sickle cell anemia. J Pediatr Hematol Oncol. 2017;39:470–2.
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Funding: None; Competing Interest: None stated.
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Contributors: MA: designed the study, participated in collection and interpretation of data, and drafted and finalized the manuscript; SA: assisted in study design, conducted the laboratory tests for both phases, reviewed statistical analysis of the data, and drafted part of the manuscript. Both authors approved final version of the study.
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Azzam, M., Attalla, S. Serum Folate Levels in Patients with Chronic Hemolytic Anemia on Regular Folic Acid Supplementation Before and After Dose Modification. Indian Pediatr 56, 845–848 (2019). https://doi.org/10.1007/s13312-019-1611-6
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DOI: https://doi.org/10.1007/s13312-019-1611-6