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Folic and folinic acid load tests for dynamic assessments of compliance and metabolism in folate deficiency and hyperhomocysteinaemia patients unresponsive to high-dose folate replacement.
Ann Clin Biochem
January 2025
Clinical Haematology, New Cross Hospital, Black Country Pathology Services, The Royal Wolverhampton NHS Trust, Wolverhampton, UK.
We describe the utility of 'folic and folinic acid load tests' in the investigation of a 26-year-old woman with persistently low serum folate and moderate hyperhomocysteinaemia unresponsive to folic acid supplements. Serum folate, plasma 5-methyltetrahydrofolate (5-MTHF), red cell 5-MTHF and plasma total homocysteine at baseline, 2-h, 4-h and 2- or 4-days (if applicable) post administration of a large dose of oral folic acid, or oral or parenteral folinic acid were measured. The tests confirmed non-compliance but also suggested an unsuspected possible defect in the folate pathway based on differential response to folic versus folinic acid supplements.
View Article and Find Full Text PDF5-Methyltetrahydrofolate and aqueous extract of () ameliorate diabetes and associated complications in STZ-induced diabetic rats.
3 Biotech
January 2025
Plant Cell Biotechnology (PCBT) Department, Central Food Technological Research Institute (CFTRI), Mysuru, 570 020 India.
Unlabelled: The present study evaluated the effects of 5-methyltetrahydrofolate (5-MTHF) and aqueous extract on diabetes. An in silico docking study with select bioactive compounds showed strong binding affinities of folates with glucose metabolism-related proteins. In vitro assay showed 5-MTHF's superior inhibitory activity on alpha-amylase compared to folic acid.
View Article and Find Full Text PDFAssociation of maternal folic acid supplementation and offspring MTRR gene polymorphism with congenital heart disease: a hospital-based case-control study in Han population.
J Health Popul Nutr
December 2024
Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, Hunan, China.
Background: Although many studies shown that the risk of congenital heart disease (CHD) was closely related to genetic and environmental factors, the exact mechanism was still unclear. This study was to assess the association of maternal folic acid supplementation (FAS), the 5-methyltetrahydrofolate-homocysteine methyltransferase reductase (MTRR) gene polymorphisms in offspring and their interaction effects with the risk of CHD and its subtypes.
Methods: A case-control study was conducted on 595 children with CHD and 605 healthy child controls.
Evaluating toxicity and level of DNA damage in human fetal lung cells upon exposure to 5-methyltetrahydrofolate (bioactive folate).
Nutr Health
December 2024
Biology and Environmental Science Department, University of New Haven, West Haven, CT, USA.
Folic acid (FA) supplementation is widely regarded as a key nutritional intervention during pregnancy due to its protective effect against neural tube defects. Recent research has reported FA supplementation outcomes on offspring's health, with increased incidences of allergy/respiratory problems. This study evaluates if increased levels of 5-methyltetrahydrofolate (5-MTHF) are associated with DNA modification, leading to disruption of cell proliferation in fetal lung cells and increasing susceptibility to asthma.
View Article and Find Full Text PDFQuantification of multi-pathway metabolites related to folate metabolism and application in natural population with MTHFR C677T polymorphism.
Anal Bioanal Chem
December 2024
State Key Laboratory of Medical Proteomics, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
Folate, serving as a crucial micronutrient, plays an important role in promoting human growth and supporting transformations to a variety of metabolic pathways including one-carbon, pyrimidine, purine, and homocysteine metabolism. The 5,10-methylenetetrahydrofolate reductase (MTHFR) enzyme is pivotal in the folate metabolic pathway. Polymorphism in the MTHFR gene, especially C677T, was associated with decreased enzyme activity and disturbance of folate metabolism, which is linked to various diseases including birth defects in newborns and neural tube abnormalities.
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