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2% (people in hospital) [1] Hypophosphatemia is an electrolyte disorder in which there is a low level of phosphate in the blood . [ 1 ] Symptoms may include weakness, trouble breathing, and loss of appetite. [ 1 ]
In AIP, over 100 mutations have been identified on the long arm of chromosome 11 at the HMBS gene, which codes for the cytoplasmic enzyme porphobilinogen deaminase. [16] This deficiency prevents heme synthesis, which can not be completed and the metabolite porphobilinogen accumulates in the cytoplasm.
Some people with a metabolic myopathy never develop symptoms due to the body's ability to produce enough ATP through alternative pathways (e.g. the majority of those with AMP-deaminase deficiency are asymptomatic [1] [21]). H 2 O + ATP → H + + ADP + P i + energy → muscle contraction [22] ATP is needed for muscle contraction by two processes:
The symptoms of exercise intolerance, abnormal muscle fatigue, myalgia (muscle pain), arrhythmia, possible fixed proximal muscle weakness, lipid deposits, possible episodes of rhabdomyolysis, with symptoms becoming evident or worsening while fasting, during a fever, during low-intensity aerobic activity or after prolonged activity–all these ...
For reasons that are not understood, many people with defective variants of the AMPD genes are asymptomatic, while others have symptoms including exercise intolerance, and/or muscle pain and cramping. [1] Fatigue. MADD lowers aerobic power output, so increased anaerobic power is needed to perform the same amount of work. [citation needed]
This can result in a variety of symptoms, many of which are severe and can affect the skeleton, brain, skin, heart, and the central nervous system. [8] Increasing the concentration of the missing enzyme within the body has been shown to improve the body's normal cellular metabolic processes and reduce substrate concentration in the body.
Mutations in the TMEM70 gene have been associated with neonatal mitochondrial encephalocardiomyopathy due to nuclear type 2 Complex V (ATP synthase) deficiency. [5] There are a wide variety of possible symptoms depending on the mutation, including 3-methylglutaconic aciduria, dysmorphic features, psychomotor retardation, hypotonia, growth retardation, mitochondrial myopathy and cardiomyopathy ...
Glycogen storage disease type V (GSD5, GSD-V), [1] also known as McArdle's disease, [2] is a metabolic disorder, one of the metabolic myopathies, more specifically a muscle glycogen storage disease, caused by a deficiency of myophosphorylase.