Floderus Y, Shoolingin- 1 Jordan P, Harper P. Acute intermittent porphyria in Sweden. Molecular, functional and clinical consequences of some new mutations . Porphyria, Acute Intermittent. Porfyri, akut intermittent. Engelsk definition. An autosomal dominant porphyria that is due to a deficiency of. porphyria intermittent acute; AIP; pyrroloporphyria; AIP – acute intermittent . ruwiki Острая перемежающаяся порфирия; svwiki Akut intermittent porfyri; thwiki.

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Porphyrias Autosomal dominant disorders. Excludes hereditary coproporphyria see Differential Diagnosis. Acute attacks, which may be provoked by certain drugs, alcoholic beverages, endocrine factors, calorie restriction, stress, and infections, usually resolve akt two weeks. Tachycardia and hypertension are frequent, while fever, sweating, restlessness, and tremor are seen less frequently.


Clinical assessment should include a full neurologic evaluation. Manage together with a porphyria specialist; treatment options include ovulation suppression with gonadorelin analogues, regular hematin infusions, or as a last resort liver transplantation.

By using this site, you agree to the Terms of Use and Privacy Policy. Seizures may also occur as a manifestation of central nervous system involvement of the acute attack. News and articles Systemic messenger RNA as an etiological treatment for acute intermittent porphyria.

Back, buttock, or limb pain may be a feature. One was homozygous for a pathogenic variant in exon 6 and was less severely affected than the four described above [ Hessels et al ]. Considerations in families with an apparent de novo intermittany variant. Individuals who have experienced acute attacks require monitoring of renal function; in some countries annual hepatic imaging to detect HCC is also offered to all individuals with an HMBS pathogenic variant after age intermigtant years whether or not they have experienced acute attacks.

University of Washington, Seattle; If improvement is unsatisfactory or if additional and progressive neurologic features present, intravenous administration of hemin preparations is recommended. Recurrent acute attacks are best managed with support and advice from a porphyria specialist.

Influence of age and gender on the clinical expression of acute intermittent porphyria based on molecular study of porphobilinogen intermittant gene among Swiss aktu. See Genetic Counseling for issues related to testing of at-risk relatives for genetic counseling purposes.


A recognized precipitating factor is inadequate caloric intake [ Anderson et al ] in connection with, for example, dieting or heavy exercise schedules.

The risk to other family members depends on the status of the proband’s parents: The gene consists of 15 exons distributed over 10 kb that encode a ubiquitous HMBS isoform exons 1 and that is expressed in intermkttant tissues [ Puy et al ] and an erythroid isoform exons that porfori restricted to erythroid cells [ Grandchamp et al ].


Revision History 7 February me Comprehensive update posted live. Avoid unsupervised calorie restriction diets, particularly those that exclude carbohydrate completely. Testing of at-risk asymptomatic family members When the HMBS pathogenic variant has been identified in the family, molecular genetic testing is the method of choice for identification of individuals who have an HMBS pathogenic variant and are therefore at risk for an acute attack.

For mild acute neurovisceral attacks, a high carbohydrate intake, preferably oral and together with other supportive measures see Acute Aku Attackmay be used for up to 48 hours. Patients should be advised about prfiri available from national patient associations where available.

The risk that an individual with latent AIP will later develop symptoms depends on age, sex, exposure to provoking agents, and other factors; however, the majority will remain asymptomatic throughout their lives. Molecular genetic testing is used in a symptomatic individual to identify a pathogenic variant that can then be used to identify AIP in relatives of the proband.

Dextrose saline is preferred. The minimum effective infusion frequency should be employed, usually a weekly dose of hemin infused via an in-dwelling venous catheter.

The optimal time for determination of genetic risk and discussion of the availability and indications for prenatal testing is porfkri pregnancy. Indications include repeated life-threatening acute attacks, failure of medical intedmittant, and poor quality of life [ Seth et al ]. Thus, increased urinary PBG excretion does not necessarily confirm that symptoms are the result of porphyria. Evaluation of gonadotropin-releasing hormone agonist treatment for prevention of menstrual-related attacks in acute porphyria.

Bilateral axonal motor neuropathy may also involve the distal radial nerves [ Intermottant et al ]. AIP is inherited in an autosomal dominant manner. Four had pathogenic variants in exon Increased zinc-protoporphyrin; decreased ALAD activity. Genetic Counseling Genetic counseling is the process of providing individuals and families with information on the nature, inheritance, and implications of genetic disorders to help them make informed medical and personal decisions.


Acute intermittent porphyria

Seizures often accompany this disease. Persons in remission often continue to excrete excess PBG in their urine long after symptoms have resolved.

Side effects can be minimized by administering estrogen, preferably by patch. Results should be corrected for urine concentration by expression as the ratio of PBG to creatinine. It is there because it is known to provoke attacks of acute porphyria either intermtitant or by interacting with other factors.

The risk of provoking an acute attack may be highest for women with acute intermittent porphyria, high urinary porphobilinogen PBG levels, or both intermlttant these together. All individuals with latent porphyria, the parents of affected individuals, and patients in remission should be advised about measures that diminish the risk porfirri acute attacks:.

ALAD porphyria Acute intermittent porphyria. Stop medications that can exacerbate AIP; provide adequate caloric intake by intravenous infusion if required hypotonic dextrose water solutions should be avoided. This section is not meant to address all personal, cultural, or ethical issues that individuals may face or to substitute for consultation with a intedmittant professional.

See Table 1 for biochemical characteristics of clinically manifest AIP. However, there is a small chance that pregnancy could initiate or worsen porphyria symptoms. Three of the mutations detected in four of the families have been previously reported in other countries delCT in aout 12, insT and G11R in exon 7. From observation to a modern algorithm-based system for the prediction of porphyrogenicity.

One of the many hypothesized diagnoses of the artist Vincent van Gogh is that he and his siblings, in particular his brother Theosuffered from AIP and syphilis.

Evidence of an increased concentration of PBG in urine, using a specific quantitative assay, is essential to establish an unequivocal diagnosis of acute porphyria in a symptomatic individual.