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Methylenetetrahydrofolate Reductase - Crossref

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Last Updated: 13 May 2022

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B-Vitamins, Methylenetetrahydrofolate Reductase (MTHFR) and Hypertension

According to recent reports, B-vitamin riboflavin is a cofactor in MTHFR's development of blood pressure, particularly in those with the homozygous mutant MTHFR 677 TT genotype. The results may have important implications for the management of hypertension if studies show that this genetic predisposition to hypertension is corrected by low-dose riboflavin have ranged from 3 to 32 percent globally.

Source link: https://doi.org/10.1024/0300-9831/a000069


Association of methylenetetrahydrofolate reductase genetic polymorphisms with atlantoaxial dislocation

Object Atlantoaxial dislocation's genetics have yet to be clarified. Methods MTHFR polymorphisms in 75 consecutive patients with AAD and in their reducible and irreducible subgroups were carried out by molecular analysis. Conclusions The CT genotype frequency of MTHFR 677C-T polymorphism in the whole group of patients with AAD as well as in the irreducible subgroup was significantly elevated. T allele frequency in the AAD group was also higher than in controls, which was also higher than in controls. In AAD and the irreducible subgroup, the comparison of combined frequency of CT and TT genotypes with the frequency of the CC genotype revealed significant association in AAD and the irreducible subgroup. Both MTHFR 677C T polymorphism and elevated T allele frequency have significant connections with AAD, particularly the irreducible variety.

Source link: https://doi.org/10.3171/spi-07/12/623


Impact of 5,10-methylenetetrahydrofolate reductase gene polymorphism on neural tube defects

Object Neural tube defects are one of the most common congenital malformations worldwide. The present research was done to determine the relative importance of the genotypes in the affected child and its mother to determine the effect of MTHFR 677 CT mutation as a risk factor for NTD in the South Indian population and determine the relative importance of the genotypes in the affected child and its mother. Children with NTDs and their mothers were among the test group's children, who were also pregnant, while the control group had to enforce apparently healthy controls. Conclusions Between the three groups there was a significant difference in the prevalence of MTHFR 677 CT mutations. The risk of a child's TT genotype was also statistically significant. The TT genotype status of the developing embryo, rather than its mother's TT genotype status, is the determining genetic determinant of MTHFR-related NTD risk.

Source link: https://doi.org/10.3171/2010.8.peds1072


Heterotrimeric NADH-Oxidizing Methylenetetrahydrofolate Reductase from the Acetogenic Bacterium Acetobacterium woodii

ABSTRACT The methylene-THF reductase reduces methylene-THF reduction, which is remarkably exergonic with NADH as the reductant. NADH:methylviologen and NADH: methyloxide reduction with NADH as the reductant, but also methyltetrahydrofolate reduction with NADH as the reducerant. MetF or MetVF were unable to catalyze NADH's methylene-THF-dependent oxidation of NADH, but MetVF could reduce methylene-THF using methyl viologen as the electron donor. The purified MTHFR complex did not catalyze the reverse reaction, the endergonic oxidation of methyl-THF with NAD+ as the acceptor, but it could not be triggered by reduced ferredoxin. However, the conversion of methyl-THF to methylene-THF was enhanced by the addition of protein fractions, resulting in NAD+ reduction likely. According to the following reaction: NADH + methylene-THF + NAD + NAD+ : According to our results, A. woodii's MTHFR catalyzes methylene-THF reduction. The differences in the subunit compositions of MTHFRs of bacteria are discussed in light of their various functions. IMPORTANCE CONSERVANCE OF ACETogenic Bacterium Acetobacterium woodii ferredoxin desorption and a Na + phosphate synthase are two key factors that result in energy conservation in Acetobacterium woodii's acetogenic bacterium Acetobacterium woodii. The MTHFR of A. woodii, which has an extraordinary heterotrimeric structure, is here reviewed by here. We now have a quantitative bioenergetic scheme for acetogenesis from H 2 plus CO 2 in the model acetogen A. woodii since the last enzyme with a potential role in A. woodii's energy metabolism has been established.

Source link: https://doi.org/10.1128/jb.00048-15


The SCO2102 Protein Harbouring a DnaA II Protein-Interaction Domain Is Essential for the SCO2103 Methylenetetrahydrofolate Reductase Positioning at Streptomyces Sporulating Hyphae, Enhancing DNA Replication during Sporulation

Streptomyces DNA replication begins with the DnaA binding to the origin of replication. Here, we describe SCO2102, a protein containing a DnaA II protein-protein interaction domain that is highly conserved in Streptomyces. SCO2102-mCherry co-localizes with SCO2103-eGFP during sporulation, and SCO2103-eGFP is necessary for the SCO2103 positioning at sporulating hyphae, since SCO2103-eGFP fluorescent spots are missing in the SCO2103 knockout. To the best of our knowledge, SCO2102 is the first protein carrying a DnaA II domain specifically identified during sporulation, whereas SCO2103 is the first methylenetetrahydrofolate reductase that has been found to be vital for Streptomyces sporulation.

Source link: https://doi.org/10.3390/ijms23094984


The C677T polymorphism of the methylenetetrahydrofolate reductase gene and susceptibility to late-onset Alzheimer’s disease

We suspect that C677T polymorphism in the MTHFR gene has been linked to the susceptibility to LOAD. The association between MTHFR C677T polymorphisms and LOAD susceptibility has been investigated by previous published research; nonetheless, the results have been not only controversial but also indecisive; instead, the link has been explored. The odds ratios were used for the analysis of the robustness of the MTHFR C677T polymorphism connection with LOAD's vulnerability to LOAD, which was determined using the respective 95% confidence interval. In a codominant framework, we discovered that a strong correlation exists between C677T polymorphism and LOAD risk. In addition, a significant rise in the susceptibility to LOAD was discovered in APOE 4 carriers as well as non-APOE 4 carriers in the subgroup study, which was carried out using APOE 4 status. MTHFR C677T polymorphism, according to the new meta-analysis, was correlated with susceptibility to LOAD.

Source link: https://doi.org/10.1515/med-2019-0006


Evaluation of umbilical cord immune cells in pregnancies with autoimmune disorders and/or methylenetetrahydrofolate reductase polymorphisms

Abstract Objectives: In pregnancies with autoimmune diseases and/or methylenetetrahydrofolate polymorphisms, we can determine umbilical cord immune cells in pregnancies with autoimmune disorders and/or methylenetetrahydrofolate reductase polymorphisms. Methods Umbilical cords were obtained from seven AID women without MTHFR polymorphisms, eight with AID and MTHFR polymorphisms, nine with MTHFR polymorphisms, nine with AID and MTHFR polymorphisms, eight with MTHFR polymorphisms, nine with MTHFR polymorphisms, nine with MTHFR polymorphisms, eight with MTHFR polymorphisms, eight with MTHFR polymorphisms, eight morphisms, eight women without MTHFR polymorphisms, eight with AID and MTHFR polymorphisms, eight with MTHFR polymorphisms, eight with MTHFR polymorphisms MTHFR polymorphisms MTHFR polymorphisms MTHFR polymorphisms MTHFR polymorphisms MTHFR polymorphisms MTHFR polymorphisms MTHFR polymorphisms, eight with MTHFR polymorphisms, eight with MTHFR polymorphism MTHFR polymorphism may have an effect on CD4+ cells in the subamniotic zone's number and morphology. The presence of maternal risk factors is significantly influenced by CD8+ cell proliferation, which is strongly influenced by the presence of maternal risk factors. Cells from the control group in the venous wall, perforation zone, and intervascular zone were only present in the control group's intervascular zone. Cells were only found in the control group's arterial wall and the intervascular zone of the AID group with different morphologic characteristics. MTHFR polymorphisms and/or AID could have an effect on the stem cell and immune cell composition, as well as AID.

Source link: https://doi.org/10.1515/jpm-2021-0593


Effects of common polymorphisms on the properties of recombinant human methylenetetrahydrofolate reductase

The change of methyltetrahydrofolate to methyltetrahydrofolate converts Methylenetetrahydrofolate, the most important methyl donor for homocysteine to methionine is catalyzed by Methylenetetrahydrofolate's conversion from methyltetrahydrofolate. Recombinant human MTHFR has been expressed in high amounts and purified to homogeneity in quantities suitable for biochemical analysis by using a baculovirus expression method. [Guenther, B. D. , et al. ] : This biochemical phenotype is in good agreement with forecasts based on studies comparing wild-type Escherichia coli MTHFR with a construct, Ala177Val, homologous to the Ala222Val mutant human enzyme [Guenther, B. D. et al.

Source link: https://doi.org/10.1073/pnas.261469998


Polymorphisms in the methylenetetrahydrofolate reductase gene are associated with susceptibility to acute leukemia in adults

T polymorphism in the MTHFR gene results in thermolability and reduced MTHFR activity, decreasing the pool of methylTHF and raising the pool of methyleneTHF. We analyzed DNA from a case-control trial in the United Kingdom involving 308 adult acute leukemia patients and 491 age- and sex-matched controls. MTHFR 677TT genotype was lower among 71 acute lymphocytic leukemia patients compared to 114 controls, resulting in a 4. 3-fold decrease in ALL [odds ratio OR = 0. 23; 95% CI = 0. 06–0. 81]. In people with the MTHFR 1298CC variant allele, we saw a 3-fold decrease in the risk of ALL in those with the MTHFR 1298AC polymorphism and a 14-fold reduced risk of ALL. No significant difference in MTHFR 677 and 1298 genotype frequencies was detected between 237 cases and 377 controls in acute myeloid leukemia.

Source link: https://doi.org/10.1073/pnas.96.22.12810

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions