Glycogen storage disease type I
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Glycogen storage disease type I
Biochemistry
Biochemistry and metabolism
Glycolysis
Citric acid cycle
Electron transport chain and oxidative phosphorylation
Gluconeogenesis
Glycogen metabolism
Pentose phosphate pathway
Physiological changes during exercise
Amino acid metabolism
Nitrogen and urea cycle
Fatty acid synthesis
Fatty acid oxidation
Ketone body metabolism
Cholesterol metabolism
Metabolic disorders
Essential fructosuria
Hereditary fructose intolerance
Galactosemia
Pyruvate dehydrogenase deficiency
Glucose-6-phosphate dehydrogenase (G6PD) deficiency
Lactose intolerance
Glycogen storage disease type I
Glycogen storage disease type II (NORD)
Glycogen storage disease type III
Glycogen storage disease type IV
Glycogen storage disease type V
Leukodystrophy
Metachromatic leukodystrophy (NORD)
Krabbe disease
Gaucher disease (NORD)
Niemann-Pick disease types A and B (NORD)
Niemann-Pick disease type C
Fabry disease (NORD)
Tay-Sachs disease (NORD)
Mucopolysaccharide storage disease type 1 (Hurler syndrome) (NORD)
Mucopolysaccharide storage disease type 2 (Hunter syndrome) (NORD)
Cystinosis
Hartnup disease
Alkaptonuria
Ornithine transcarbamylase deficiency
Phenylketonuria (NORD)
Cystinuria (NORD)
Homocystinuria
Maple syrup urine disease
Abetalipoproteinemia
Familial hypercholesterolemia
Hypertriglyceridemia
Hyperlipidemia
Disorders of carbohydrate metabolism: Pathology review
Disorders of fatty acid metabolism: Pathology review
Dyslipidemias: Pathology review
Glycogen storage disorders: Pathology review
Lysosomal storage disorders: Pathology review
Disorders of amino acid metabolism: Pathology review
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Glycogen storage disease type I
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Glycogen storage disease type I
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First Aid
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Glucose-6-phosphatase
Von Gierke disease p. 85
Gout p. 477
Von Gierke disease p. 85
Hepatomegaly
Von Gierke disease p. 85
Hypoglycemia
Von Gierke disease p. 85
Triglycerides
Von Gierke disease p. 85
Uric acid
Von Gierke disease p. 85
Von Gierke disease p. 85
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Content Reviewers
Viviana Popa, MDGlycogen storage disease type I, also called Von-Gierke’s disease, is a genetic disorder caused by a mutation in the glucose 6 phosphatase gene on chromosome 17.
The end result is that glycogen can’t be broken down into glucose in liver cells, so glucose metabolism goes awry, resulting in symptoms like low blood sugar, weakness and poor growth.
Glucose is such an important energy source, that our body stores excess glucose in liver cells and skeletal muscle cells in the form of glycogen.
Glycogen is basically an enormous molecule or polymer, that’s made up of glucose molecules linked together by glycosidic bonds.
And glycogen has a main chain, as well as multiple branches sprouting off of it.
These branches allow glycogen to be compact and also allow it to rapidly add and remove glucose to and from the big glycogen molecule.
Talk about a molecular sugar rush!
Now, glucose molecules are usually added to glycogen in response to insulin, which is secreted by the pancreas after meals.
That’s when there’s high blood sugar, or plenty of glucose floating around in the bloodstream.
So, it makes sense for some of this glucose to be stored as glycogen, right?
Now when it’s been a while after a meal, so when you’re fasting, blood sugar levels take a dip. In response, the pancreas secretes glucagon and the adrenal glands secrete epinephrine.
It turns out that glucagon tells the liver cells to break glycogen down into individual glucose molecules, and epinephrine tells skeletal muscle cells to do the same.
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