Category: M

  • Methyselenol

    A selenium metabolite having anticancer activity.  

  • Methylmalonic acidemia

    Accumulation of methyl malonic acid in the blood; can be due to a genetic error, but also is a characteristic of vitamin B12 deficiency. An inherited metabolic disease caused by inability to convert methylmalonic acid to succinic acid. Clinically, signs are failure to grow, mental retardation, and severe metabolic acidosis. One form of the disease…

  • Methyldopa

    A drug that is an antihypertensive and an anticholinergic compound. A drug that reduces blood pressure. It is administered by mouth or injection, and drowsiness commonly occurs during the first days of treatment. A centrally acting anti-hypertensive drug often used in conjunction with a diuretic. It is sometimes used to control high blood pressure, especially…

  • Met-enkephalin

    A hormone produced by the pars distalis of the anterior pituitary. It arises from the same gene product as ACTH. The function of this hormone in humans is unclear.  

  • Metallothionein

    A carrier for certain minerals such as zinc.  

  • Metallopeptidases

    Mammalian cell-surface enzymes that participate in the postsecretory processing and metabolism of neuropeptides and peptide hormones.  

  • Metabolizable energy

    The energy in food corrected for the energy lost in feces, urine, and combustible gas: ME = IE – (FE + UE + GE).  

  • Metabolic reaction

    A food-intolerance reaction resulting from the effect of a food product on a metabolic abnormality of the host. Examples include the problems associated with missing or deficient digestive enzyme activity.  

  • Metabolic control

    The regulation of the rates at which metabolic pathways function and interact.  

  • Menkes disease

    A rare genetic disorder of copper absorption. The defect is in the mechanism for copper absorption by the enterocyte. Symptoms are those of copper deficiency. The mutation is in the ATP7A gene that encodes the copper transporter P-type ATPase. Metabolic defect resulting from a mutation on the X chromosome that alters the transport of copper…