Search results
Results from the WOW.Com Content Network
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:
People who excessively consume alcohol are usually also malnourished with regard to minerals. In addition, alcohol treatment is associated with refeeding, which further depletes phosphate, and the stress of alcohol withdrawal may create respiratory alkalosis, which exacerbates hypophosphatemia (see above).
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]
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.
Although research is ongoing, treatment options are currently limited; vitamins are frequently prescribed, though the evidence for their effectiveness is limited. [29] Pyruvate has been proposed in 2007 as a treatment option. [30] N-acetyl cysteine reverses many models of mitochondrial dysfunction. [31]
The deficiency was found to be almost complete in brain and liver tissues and substantial (approximately 50% of normal enzyme activity) in fibroblasts (connective tissue cells) and skeletal muscle. Kidney and heart tissues were found to not have a COX deficiency. [16] French Canadian Leigh syndrome has similar symptoms to other types of Leigh ...
The first step in treatment is determining whether the deficiency is caused by a gastrointestinal or kidney problem. People with no or minimal symptoms are given oral magnesium; however, many people experience diarrhea and other gastrointestinal discomfort.