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Original Article
Hematology
Hyperhomocysteinemia in pediatric β-thalassemia: links to vitamin cofactor deficiencies and oxidative stress
Arzu Dadashova, Gunay Aliyeva, Rana Rahimova, Gulnara Azizova, Khayala Mammadova
Clin Exp Pediatr. 2025;68(10):819-830.   Published online July 8, 2025
Question: What are the biochemical and clinical correlates of hyperhomocysteinemia in pediatric β-thalassemia, and how does it relate to vitamin status, oxidative stress, and splenectomy?
Finding: Most pediatric β-thalassemia patients exhibited severe hyperhomocysteinemia, which was strongly associated with folate and B12 deficiencies and influenced oxidative stress patterns, particularly in splenectomized individuals.
Meaning: These findings suggest that routine monitoring and correction of B-vitamin deficiencies may mitigate hyperhomocysteinemia-related risks in pediatric thalassemia.
Polymorphisms of methylenetetrahydrofolate reductase are not a risk factor for Kawasaki disease in the Korean population
Kyung Lim Yoon, Jin Hee Ko, Kye Shik Shim, Mi Young Han, Sung Ho Cha, Su Kang Kim, Joo Ho Jung
Clin Exp Pediatr. 2011;54(8):335-339.   Published online August 31, 2011
Purpose

Hyperhomocysteinemia is known as a risk factor for atherosclerosis. Preclinical arteriosclerosis is noted and premature atherosclerosis is known to be accelerated in Kawasaki disease (KD) patients. Genetic polymorphisms in the 5,10-methylenetetrahydrofolate reductase (MTHFR) gene result in elevated plasma homocysteine concentrations and are known to be associated with the development of coronary artery disease. Our hypothesis is that single nucleotide polymorphisms...

Serum homocysteine and tumor necrosis factor-alpha levels after intravenous gammaglobulin treatment in patients with Kawasaki disease
Jung Hwa Cha, Young Mi Hong
Clin Exp Pediatr. 2006;49(10):1093-1099.   Published online October 15, 2006
Purpose : Homocysteine is a strong and independent risk factor for cardiovascular disease. The deleterious effects of homocysteine included endothelial dysfunction, arterial intimal-medial thickening, wall stiffness and procoagulant activity. However, the precise mechanism responsible for homocysteine release in children with coronary artery disease is still unknown. The purpose of this study was to investigate serum homocysteine and tumor necrosis factor(TNF)-α...
Homocysteine, insulin, vitamin B12 and folic acid levels in obese children
Jee Yoon Park, Young Mi Hong
Clin Exp Pediatr. 2006;49(5):475-481.   Published online May 15, 2006
Purpose : As the prevalence of childhood obesity is increasing, hypertension, hyperlipidemia, insulin resistance and diabetes mellitus have become problems. High homocysteine levels and low vitamin B12 supplementation are acknowledged to have a role in coronary artery disease, but there are few studies on homocysteine, insulin and vitamin B12 levels in obese children. We aimed to study whether homocysteine, insulin,...
Risk Factors for Cardiovascular Disease in Obese Children
Su Jin Cho, Se Jin Park, Il Tae Hwang, Young Mi Hong
Clin Exp Pediatr. 2001;44(5):493-500.   Published online May 15, 2001
Purpose : Obesity is known to be associated with complications such as hypertension, dyslipidemia, and insulin resistance. The importance of insulin resistance and hyperinsulinemia have been emphasized in obesity. Homocysteine is an emerging important risk factor for cardiovascular disease in adult, but there are less reports about homocysteine in children. Several risk factors such as blood pressure, lipid profiles, serum...
A Study of Homocysteine Metabolism related Neural Tube Defect
Baeck Hee Lee
Clin Exp Pediatr. 1998;41(1):110-114.   Published online January 15, 1998
Purpose : Methylenetetrahydrofolate reductase is an important enzyme in homocysteine metabolism. Since the identification of the gene locus and mutation of methylenetetrahydrofolate reductase, an increasing number of reports have suggested that elevated levels of homocysteine were associated with various kinds of arteriovascular disease and neural tube defect. Our research plans to investigate whether elevated levels of homocysteine are more common with neural tube defect and...
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