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GLUT1 deficiency syndrome, also known as GLUT1-DS, De Vivo disease or Glucose transporter type 1 deficiency syndrome, is an autosomal dominant genetic metabolic disorder associated with a deficiency of GLUT1, the protein that transports glucose across the blood brain barrier. [1]
During the next 15 years the underlying defect remained unknown but since the plasmaprotein transferrin was underglycosylated (as shown by e.g. isoelectric focusing), the new syndrome was named carbohydrate-deficient glycoprotein syndrome (CDGS) [1] Its "classic" phenotype included psychomotor retardation, ataxia, strabismus, anomalies (fat ...
GLUT1 accounts for 2 percent of the protein in the plasma membrane of erythrocytes. Mutations in this gene can cause GLUT1 deficiency syndrome 1, GLUT1 deficiency syndrome 2, idiopathic generalized epilepsy 12, dystonia 9, and stomatin-deficient cryohydrocytosis. [4] [5]
Nutritional deficiency is far from a leading cause of death in the United States, but the mortality rate has grown significantly enough in recent years to impact life expectancy.
GSD IX has become the dominant classification for this disease, grouped with the other isoenzymes of phosphorylase-b kinase deficiency. [38] GSD type XI (GSD 11): Fanconi-Bickel syndrome (GLUT2 deficiency), hepatorenal glycogenosis with renal Fanconi syndrome, no longer considered a glycogen storage disease, but a defect of glucose transport. [4]
Glutaric acidemia type 1 (GA1) is an inherited disorder in which the body is unable to completely break down the amino acids lysine, hydroxylysine and tryptophan.Excessive levels of their intermediate breakdown products (glutaric acid, glutaryl-CoA, 3-hydroxyglutaric acid, glutaconic acid) can accumulate and cause damage to the brain (and also other organs [1]), but particularly the basal ...
The form in horses is known as glycogen branching enzyme deficiency. It has been reported in American Quarter Horses and related breeds. [citation needed] The disease has been reported in the Norwegian Forest Cat, where it causes skeletal muscle, heart, and CNS degeneration in animals greater than five months old.
The principal metabolic effects of deficiency of glucose-6-phosphatase are hypoglycemia, lactic acidosis, hypertriglyceridemia, and hyperuricemia. Map of effects in GSDIa from non-functioning glucose-6-phosphatase. The hypoglycemia of GSD I is termed "fasting", or "post-absorptive", usually about 4 hours after the complete digestion of a meal ...