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Variegate porphyria is inherited in an autosomal dominant pattern, which means the defective gene is located on an autosome, and inheriting one copy of the defective gene from an affected parent is sufficient to cause the disorder. More severe cases result from inheriting two copies of the defective gene.
Variegate porphyria; W. Watson–Schwartz test This page was last edited on 27 November 2020, at 02:14 (UTC). Text is available under the Creative ...
Porphyria / p ɔːr ˈ f ɪr i ə / is a group of disorders in which substances called porphyrins build up in the body, adversely affecting the skin or nervous system. [1] The types that affect the nervous system are also known as acute porphyria, as symptoms are rapid in onset and short in duration. [1]
Variegate porphyria is caused by mutations in the PPOX gene. More than 100 mutations that can cause variegate porphyria have been identified in the PPOX gene. One mutation, a substitution of the amino acid tryptophan for arginine at position 59 (also written as Arg59Trp or R59W), is found in about 95 percent of South African families with variegate porphyria.
Nearly all cases of porphyria cutanea tarda [18] exhibit blister formation on the skin within 2–4 days of light exposure. Variegate porphyria [19] and hereditary coproporphyria [20] can also exhibit symptoms of light-induced blisters. [18]
The most well-known health issue involving porphobilinogen deaminase is acute intermittent porphyria, an autosomal dominant genetic disorder where insufficient hydroxymethylbilane is produced, leading to a build-up of porphobilinogen in the cytoplasm. This is caused by a gene mutation that, in 90% of cases, causes decreased amounts of enzyme.
Acute intermittent porphyria (AIP) is a rare metabolic disorder affecting the production of heme resulting from a deficiency of the enzyme porphobilinogen deaminase. It is the most common of the acute porphyrias .
Acute intermittent porphyria [5] [verification needed] Hereditary coproporphyria; Variegate porphyria; Side effects of stimulants such as cocaine or methylphenidate; Side effects of antipsychotics like haloperidol; SSRI or SNRI medications; As explained in a 2008 study, in people with mood disorders there is a dynamic link between their mood ...