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  2. Methylenetetrahydrofolate reductase deficiency - Wikipedia

    en.wikipedia.org/wiki/Methylenetetrahydrofolate...

    Methylenetetrahydrofolate reductase deficiency is the most common genetic cause of elevated serum levels of homocysteine (hyperhomocysteinemia). It is caused by genetic defects in MTHFR, which is an important enzyme in the methyl cycle. [1] Common variants of MTHFR deficiency are asymptomatic and have only minor effects on disease risk. [2]

  3. Methylenetetrahydrofolate reductase - Wikipedia

    en.wikipedia.org/wiki/Methylenetetrahydrofolate...

    Methylenetetrahydrofolate reductase (MTHFR) is the rate-limiting enzyme in the methyl cycle, and it is encoded by the MTHFR gene. [5] Methylenetetrahydrofolate reductase catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a cosubstrate for homocysteine remethylation to methionine.

  4. Hyperhomocysteinemia - Wikipedia

    en.wikipedia.org/wiki/Hyperhomocysteinemia

    Genetic defects in 5-MTHF reductase can consequently lead to hyperhomocysteinemia. The most common polymorphisms are known as MTHFR C677T and MTR A2756G. [23] [24] The homozigote mutation G;G also called C;C (it is equivalent) occurs in about 10% of the population of european ethnicity (white caucasians). [25]

  5. 5,10-Methylenetetrahydrofolate - Wikipedia

    en.wikipedia.org/wiki/5,10-Methylenetetrahydrofolate

    It is substrate for the enzyme methylenetetrahydrofolate reductase (MTHFR) [1] [2] It is mainly produced by the reaction of tetrahydrofolate with serine, catalyzed by the enzyme serine hydroxymethyltransferase.

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  7. MTHFD1 - Wikipedia

    en.wikipedia.org/wiki/MTHFD1

    Methylenetetrahydrofolate dehydrogenase, cyclohydrolase and formyltetrahydrofolate synthetase 1 (MTHFD1) is a gene located in humans on chromosome 14 [4] that encodes a protein, C-1-tetrahydrofolate synthase, cytoplasmic also known as C1-THF synthase, with three distinct enzymatic activities. [5] [6] [7]

  8. Hospice, Inc. - The Huffington Post

    projects.huffingtonpost.com/projects/hospice-inc

    A HuffPost analysis of more recent data, from the years 2009 to 2012, found that the percentage of inspection and complaint reports citing a deficiency was even higher: 55 percent. Twenty hospice providers, including Vitas’ Atlanta operation, were cited for more than 70 violations over that span.

  9. Tetrahydrobiopterin deficiency - Wikipedia

    en.wikipedia.org/wiki/Tetrahydrobiopterin_deficiency

    Tetrahydrobiopterin deficiency (THBD, BH 4 D) is a rare metabolic disorder that increases the blood levels of phenylalanine. Phenylalanine is an amino acid obtained normally through the diet, but can be harmful if excess levels build up, causing intellectual disability and other serious health problems.