急性・ルフィリン症

関: acute intermittent porphyria

WordNet

of critical importance and consequence; "an acute (or critical) lack of research funds"
having or demonstrating ability to recognize or draw fine distinctions; "an acute observer of politics and politicians"; "incisive comments"; "icy knifelike reasoning"; "as sharp and incisive as the stroke of a fang"; "penetrating insight"; "frequent penetrative observations" (同)discriminating, incisive, keen, knifelike, penetrating, penetrative, piercing, sharp
extremely sharp or intense; "acute pain"; "felt acute annoyance"; "intense itching and burning" (同)intense
having or experiencing a rapid onset and short but severe course; "acute appendicitis"; "the acute phase of the illness"; "acute patients"
of an angle; less than 90 degrees
a genetic abnormality of metabolism causing abdominal pains and mental confusion

PrepTutorEJDIC

(先の)『鋭い』,とがった / (痛み・感情などが)『激しい』,強い / (知力・感覚などが)『鋭い』,鋭敏な / (事態が)重大な / (病気が)急性の / (音が)高い,鋭い / 鋭角の

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/12/08 06:08:30」(JST)

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Porphyria is a group of diseases in which substances called porphyrins build up, affecting the skin or nervous system. The types that affect the nervous system are also known as acute porphyria.^[1] Symptoms of acute porphyria include abdominal pain, chest pain, vomiting, confusion, constipation, fever, and seizures.^[1]^[2] These symptoms typically come and go with attacks that last for days to weeks. Attacks may be triggered by alcohol, smoking, stress, or certain medications. If the skin is affected, blisters or itching may occur with sunlight exposure.^[2]

The disease is usually inherited from a person's parents and is due to a mutation in one of the genes that makes heme.^[2] Some types are autosomal dominant and others are autosomal recessive. One type, porphyria cutanea tarda may also be due to increased iron in the liver, hepatitis C, alcohol, or HIV/AIDS. The underlying mechanism results in a decrease in the amount of heme produced and a build up of substances involved in making heme. Porphyrias may also be classified by whether the liver or the bone marrow is affected.^[1] Diagnosis is typically by blood, urine, and stool tests. Genetic testing may be done to determine the specific mutation.^[2]

Treatment depends on the type of porphyria and a person's symptoms. The treatment of porphyria of the skin generally involves the avoidance of sunlight. The treatment for acute porphyria may involve giving intravenous heme or a glucose solution. Rarely a liver transplant may be carried out.^[2]

The frequency of porphyria is unclear. It is estimated that it affects 1 to 100 per 50,000 people.^[1] Rates vary around the world.^[2] Porphyria cutanea tarda is believed to be the most common type.^[1] The disease has been described at least as early as 370 BC by Hippocrates. The underlying mechanism was first described by Felix Hoppe-Seyler in 1871. The name porphyria is from the Greek πορφύρα, porphyra, meaning "purple", a reference to the color of the urine that may occur during an attack.^[3]

1 Signs and symptoms
- 1.1 Acute porphyrias
- 1.2 Chronic porphyrias
2 Cause
- 2.1 Triggers
- 2.2 Genetics
3 Pathogenesis
4 Diagnosis
- 4.1 Porphyrin studies
- 4.2 Additional tests
5 Management
- 5.1 Acute porphyria
  - 5.1.1 Carbohydrates and heme
  - 5.1.2 Symptom control
  - 5.1.3 Early identification
  - 5.1.4 Neurologic and psychiatric problems
  - 5.1.5 Seizures
  - 5.1.6 Underlying liver disease
  - 5.1.7 Hormone treatment
- 5.2 Erythropoietic porphyria
6 Epidemiology
7 History
- 7.1 Vampires and werewolves
- 7.2 Notable cases
8 References
9 External links

Signs and symptoms

A skin rash in a person with porphyria

Acute porphyrias

The acute porphyrias are acute intermittent porphyria (AIP), variegate porphyria (VP), amino levulinic acid dehydratase deficiency (ALAD) and hereditary coproporphyria (HCP). These diseases primarily affect the nervous system, resulting in episodic crises known as acute attacks. The major symptom of an acute attack is abdominal pain, often accompanied by vomiting, hypertension (elevated blood pressure), and tachycardia (an abnormally rapid heart rate). The most severe episodes may involve neurological complications: typically motor neuropathy (severe dysfunction of the peripheral nerves that innervate muscle), which leads to muscle weakness and potentially to quadriplegia (paralysis of all four limbs) and central nervous system symptoms such as seizures and coma. Occasionally, there may be short-lived psychiatric symptoms such as anxiety, confusion, hallucinations, and, very rarely, overt psychosis. All these symptoms resolve once the acute attack passes. Porphyria is not a cause of chronic psychiatric illness, though an association with anxiety and depression has been suggested.^{[citation needed]}

Given the many presentations and the relatively low occurrence of porphyria, patients may initially be suspected to have other, unrelated conditions. For instance, the polyneuropathy of acute porphyria may be mistaken for Guillain–Barré syndrome, and porphyria testing is commonly recommended in those situations.^[4]

Chronic porphyrias

The non-acute porphyrias are X-linked dominant protoporphyria (XLDPP), congenital erythropoietic porphyria (CEP), porphyria cutanea tarda (PCT), and erythropoietic protoporphyria (EPP). None of these are associated with acute attacks; their primary manifestation is with skin disease. For this reason, these four porphyrias — along with two acute porphyrias, VP and HCP, that may also involve skin manifestations — are sometimes called cutaneous porphyrias.

Skin disease is encountered where excess porphyrins accumulate in the skin. Porphyrins are photoactive molecules, and exposure to light results in promotion of electrons to higher energy levels. When these return to the resting energy level or ground state, energy is released. This accounts for the property of fluorescence typical of the porphyrins. This causes local skin damage.

Two distinct patterns of skin disease are seen in porphyria:

Immediate photosensitivity. This is typical of XLDPP and EPP. Following a variable period of sun exposure — typically about 30 minutes — patients complain of severe pain, burning and discomfort in exposed areas. Typically, the effects are not visible, though occasionally there may be some redness and swelling of the skin.
Vesiculo-erosive skin disease. This — a reference to the characteristic blistering (vesicles) and open sores (erosions) noted in patients — is the pattern seen in CEP, PCT, VP, and HCP. The changes are noted only in sun-exposed areas such as the face and back of the hands. Milder skin disease, such as that seen in VP and HCP, consists of increased skin fragility in exposed areas with a tendency to form blisters and erosions, particularly after minor knocks or scrapes. These heal slowly, often leaving small scars that may be lighter or darker than normal skin. More severe skin disease is sometimes seen in PCT, with prominent lesions, darkening of exposed skin such as the face, and hypertrichosis: abnormal hair growth on the face, particularly the cheeks. The most severe disease is seen in CEP and a rare variant of PCT known as hepatoerythropoietic porphyria (HEP); symptoms include severe shortening of digits, loss of skin appendages such as hair and nails, and severe scarring of the skin with progressive disappearance of ears, lips, and nose. Patients may also show deformed, discolored teeth or gum and eye abnormalities.

Cause

The porphyrias are generally considered genetic in nature.

Triggers

Acute porphyria can be triggered by a number of drugs, most of which are believed to trigger it by interacting with enzymes in the liver which are made with heme. Such drugs include:^[5]^[6]^[7]

Sulfonamides, including sulfadiazine, sulfasalazine and trimethoprim/sulfamethoxazole.
Sulfonylureas like glibenclamide, gliclazide and glimepiride, although glipizide is thought to be safe.
Barbiturates including thiopental, phenobarbital, primidone, etc.
Systemic treatment with antifungals including fluconazole, griseofulvin, ketoconazole and voriconazole. (Topical use of these agents is thought to be safe due to minimal systemic absorption.)
Some anaesthetics like ketamine and etomidate.
Certain Antibiotics like rifapentine, rifampicin, rifabutine, nitrofurantoin and possibly, metronidazole.
Ergot derivatives including dihydroergotamine, ergometrine, ergotamine, methysergide, etc.
Certain antiretroviral medications (e.g. indinavir, nevirapine, ritonavir, saquinavir, etc.), progestogens,
Progesterones
Some anticonvulsants including: carbamazepine, phenytoin and perhaps, valproate.
Miscellaneous others including: oxycodone, pentazocine, cocaine, gold antirheumatic agents like sodium aurothiomalate, methyldopa, fenfluramine, ethosuximide, flupentixol, flutamide, disulfiram, lidocaine, etc.

Genetics

Subtypes of porphyrias depend on which enzyme is deficient.

Porphyria type	Deficient enzyme	Type of porphyria	Inheritance	Symptoms	Prevalence
X-linked dominant protoporphyria (XLDPP)	5-aminolevulinate (ALA) synthase (ALAS)	Erythropoietic	X-linked dominant	Photosensitivity, cirrhosis^[8]	Rare; about 50 cases reported ^[9]
Aminolevulinate dehydratase deficiency porphyria (ALADP)	5-aminolevulinate dehydratase (ALAD)	Hepatic	Autosomal recessive ^[10]	Abdominal pain, neuropathy^[10]	Extremely rare; fewer than 10 cases ever reported.^[11]
Acute intermittent porphyria (AIP)	Hydroxymethylbilane synthase (HMBS) formerly porphobilinogen deaminase (PBGD)	Hepatic	Autosomal dominant ^[10]	Periodic abdominal pain, peripheral neuropathy, psychiatric disorders, tachycardia^[10]	1 in 10,000^[12]–20,000^[12]
Congenital erythropoietic porphyria (CEP)	uroporphyrinogen synthase (UROS)	Erythropoietic	Autosomal recessive ^[10]	Severe photosensitivity with erythema, swelling and blistering. Hemolytic anemia, splenomegaly^[10]	1 in 1,000,000 or less.^[13]
Porphyria cutanea tarda (PCT)	uroporphyrinogen decarboxylase (UROD)	Hepatic	Autosomal dominant ^[10]	Photosensitivity with vesicles and bullae^[10]	1 in 10,000^[14]
Hereditary coproporphyria (HCP)	coproporphyrinogen oxidase (CPOX)	Hepatic	Autosomal dominant ^[10]	Photosensitivity, neurologic symptoms, colic^[10]	1 in 500,000^[14]
Harderoporphyria	coproporphyrinogen oxidase (CPOX)	Erythropoietic	Autosomal recessive ^[10]	Jaundice, anemia, enlarged liver and spleen, often neonatal. Photosensitivity later.	Extremely rare; fewer than 10 cases ever reported.
Variegate porphyria (VP)	protoporphyrinogen oxidase (PPOX)	Hepatic	Autosomal dominant^[15]	Photosensitivity, neurologic symptoms, developmental delay	1 in 300 in South Africa^[14] 1 in 75,000 in Finland^[16]
Erythropoietic protoporphyria (EPP)	Ferrochelatase (FECH)	Erythropoietic	Autosomal dominant ^[10]	Photosensitivity with skin lesions. Gallstones, mild liver dysfunction^[10]	1 in 75,000^[14]–200,000^[14]

Pathogenesis

Heme synthesis—note that some reactions occur in the cytoplasm and some in the mitochondrion (yellow)

In humans, porphyrins are the main precursors of heme, an essential constituent of hemoglobin, myoglobin, catalase, peroxidase, respiratory and P450 liver cytochromes.

The body requires porphyrins to produce heme, which carries oxygen in the blood, but in the porphyrias there is a deficiency (inherited or acquired) of the enzymes that transform the various porphyrins into others, leading to abnormally high levels of one or more of these substances. Porphyrias are classified in two ways, by symptoms and by pathophysiology. Physiologically, porphyrias are classified as liver or erythropoietic based on the sites of accumulation of heme precursors, either in the liver or in the bone marrow and red blood cells.^[17]

Deficiency in the enzymes of the porphyrin pathway leads to insufficient production of heme. Heme function plays a central role in cellular metabolism. This is not the main problem in the porphyrias; most heme synthesis enzymes—even dysfunctional enzymes—have enough residual activity to assist in heme biosynthesis. The principal problem in these deficiencies is the accumulation of porphyrins, the heme precursors, which are toxic to tissue in high concentrations. The chemical properties of these intermediates determine the location of accumulation, whether they induce photosensitivity, and whether the intermediate is excreted (in the urine or feces).

There are eight enzymes in the heme biosynthetic pathway, four of which—the first one and the last three—are in the mitochondria, while the other four are in the cytosol. Defects in any of these can lead to some form of porphyria.

The hepatic porphyrias are characterized by acute neurological attacks (seizures, psychosis, extreme back and abdominal pain and an acute polyneuropathy), while the erythropoietic forms present with skin problems, usually a light-sensitive blistering rash and increased hair growth.

Variegate porphyria (also porphyria variegata or mixed porphyria), which results from a partial deficiency in PROTO oxidase, manifests itself with skin lesions similar to those of porphyria cutanea tarda combined with acute neurologic attacks. All other porphyrias are either skin- or nerve-predominant.

Diagnosis

Porphyrin studies

Porphyria is diagnosed through biochemical analysis of blood, urine, and stool.^[13]^[18] In general, urine estimation of porphobilinogen (PBG) is the first step if acute porphyria is suspected. As a result of feedback, the decreased production of heme leads to increased production of precursors, PBG being one of the first substances in the porphyrin synthesis pathway.^[19] In nearly all cases of acute porphyria syndromes, urinary PBG is markedly elevated except for the very rare ALA dehydratase deficiency or in patients with symptoms due to hereditary tyrosinemia type I.^[20] In cases of mercury- or arsenic poisoning-induced porphyria, other changes in porphyrin profiles appear, most notably elevations of uroporphyrins I & III, coproporphyrins I & III and pre-coproporphyrin.^[21]

Repeat testing during an attack and subsequent attacks may be necessary in order to detect a porphyria, as levels may be normal or near-normal between attacks. The urine screening test has been known to fail in the initial stages of a severe, life-threatening attack of acute intermittent porphyria.^{[citation needed]}

Up to 90% of the genetic carriers of the more common, dominantly inherited acute hepatic porphyrias (acute intermittent porphyria, hereditary coproporphyria, variegate porphyria) have been noted in DNA tests to be latent for classic symptoms and may require DNA or enzyme testing. The exception to this may be latent post-puberty genetic carriers of hereditary coproporphyria.^{[citation needed]}

As most porphyrias are rare conditions, general hospital labs typically do not have the expertise, technology or staff time to perform porphyria testing. In general, testing involves sending samples of blood, stool and urine to a reference laboratory.^[13] All samples to detect porphyrins must be handled properly. Samples should be taken during an acute attack, otherwise a false negative result may occur. Samples must be protected from light and either refrigerated or preserved.^[13]

If all the porphyrin studies are negative, one must consider pseudoporphyria. A careful medication review often will find the cause of pseudoporphyria.

Additional tests

Further diagnostic tests of affected organs may be required, such as nerve conduction studies for neuropathy or an ultrasound of the liver. Basic biochemical tests may assist in identifying liver disease, hepatocellular carcinoma, and other organ problems.

Management

Acute porphyria

Carbohydrates and heme

Often, empirical treatment is required if the diagnostic suspicion of a porphyria is high since acute attacks can be fatal. A high-carbohydrate diet is typically recommended; in severe attacks, a dextrose 10% infusion is commenced, which may aid in recovery. However, this can worsen hyponatraemia, and should be done with extreme caution as it can prove fatal.^[22]

Hematin (trade name Panhematin) and heme arginate (trade name NormoSang) are the drugs of choice in acute porphyria, in the United States and the United Kingdom, respectively. These drugs need to be given very early in an attack to be effective; effectiveness varies amongst individuals. They are not curative drugs but can shorten attacks and reduce the intensity of an attack. Side effects are rare but can be serious. These heme-like substances theoretically inhibit ALA synthase and hence the accumulation of toxic precursors. In the United Kingdom, supplies of NormoSang are kept at two national centers; emergency supply is available from St Thomas' Hospital, London.^[23] In the United States, Lundbeck manufactures and supplies Panhematin for infusion.^[24]

Heme Arginate (NormoSang) is used during crises but also in preventive treatment to avoid crises, one treatment every 10 days.^{[citation needed]}

Any sign of low blood sodium (hyponatremia) or weakness should be treated with the addition of hematin, heme arginate, or even tin mesoporphyrin, as these are signs of impending syndrome of inappropriate antidiuretic hormone (SIADH) or peripheral nervous system involvement that may be localized or severe, progressing to bulbar paresis and respiratory paralysis.^{[citation needed]}

Cimetidine has also been reported to be effective for acute porphyric crisis and possibly effective for long-term prophylaxis.^[25]

Symptom control

Pain is severe, frequently out of proportion to physical signs, and often requires the use of opiates to reduce it to tolerable levels. Pain should be treated as early as medically possible. Nausea can be severe; it may respond to phenothiazine drugs but is sometimes intractable. Hot baths and showers may lessen nausea temporarily, though caution should be used to avoid burns or falls.

Early identification

It is recommended that patients with a history of acute porphyria, and even genetic carriers, wear an alert bracelet or other identification at all times. This is in case they develop severe symptoms, or in case of accidents where there is a potential for drug exposure, and as a result they are unable to explain their condition to healthcare professionals. Some drugs are absolutely contraindicated for patients with any form of porphyria.^{[citation needed]}

Neurologic and psychiatric problems

Patients who experience frequent attacks can develop chronic neuropathic pain in extremities as well as chronic pain in the abdomen.^[26] Intestinal pseudo-obstruction, ileus, intussusception, hypoganglionosis, encopresis in children and have been associated with porphyrias. This is thought to be due to axonal nerve deterioration in affected areas of the nervous system and vagal nerve dysfunction.

Pain treatment with long-acting opioids, such as morphine, is often indicated, and, in cases where seizure or neuropathy is present, Gabapentin is known to improve outcome.^[27]

Depression often accompanies the disease and is best dealt with by treating the offending symptoms and if needed the judicious use of anti-depressants. Some psychotropic drugs are porphyrinogenic, limiting the therapeutic scope. Other psychiatric symptoms such as anxiety, restlessness, insomnia, depression, mania, hallucinations, delusions, confusion, catatonia, and psychosis may occur.^[28]

Seizures

Seizures often accompany this disease. Most seizure medications exacerbate this condition. Treatment can be problematic: barbiturates especially must be avoided. Some benzodiazepines are safe and, when used in conjunction with newer anti-seizure medications such as gabapentin, offer a possible regimen for seizure control. Gabapentin has the additional feature of aiding in the treatment of some kinds of neuropathic pain.^[27]

Magnesium sulfate and bromides have also been used in porphyria seizures, however, development of status epilepticus in porphyria may not respond to magnesium alone. The addition of hematin or heme arginate has been used during status epilepticus.^{[citation needed]}

Underlying liver disease

Some liver diseases may cause porphyria even in the absence of genetic predisposition. These include hemochromatosis and hepatitis C. Treatment of iron overload may be required.^{[citation needed]}

Patients with the acute porphyrias (AIP, HCP, VP) are at increased risk over their life for hepatocellular carcinoma (primary liver cancer) and may require monitoring. Other typical risk factors for liver cancer need not be present.^{[citation needed]}

Hormone treatment

Hormonal fluctuations that contribute to cyclical attacks in women have been treated with oral contraceptives and luteinizing hormones to shut down menstrual cycles. However, oral contraceptives have also triggered photosensitivity and withdrawal of oral contraceptives has triggered attacks. Androgens and fertility hormones have also triggered attacks.^{[citation needed]}

Erythropoietic porphyria

These are associated with accumulation of porphyrins in erythrocytes and are rare.

The pain, burning, swelling, and itching that occur in erythropoietic porphyrias generally require avoidance of bright sunlight. Most kinds of sunscreen are not effective, but SPF-rated long-sleeve shirts, hats, bandanas, and gloves can help. Chloroquine may be used to increase porphyrin secretion in some EPs.^[13] Blood transfusion is occasionally used to suppress innate heme production.

The rarest is congenital erythropoietic porphyria (C.E.P) otherwise known as Gunther's disease. The signs may present from birth and include severe photosensitivity, brown teeth that fluoresce in ultraviolet light due to deposition of Type 1 porphyrins, and later hypertrichosis. Hemolytic anemia usually develops. Pharmaceutical-grade beta carotene may be used in its treatment.^[29] A bone marrow transplant has also been successful in curing CEP in a few cases, although long-term results are not yet available.^[30]

In December 2014, afamelanotide received authorization from the European Commission as a treatment for the prevention of phototoxicity in adult patients with EPP.^[31]

Epidemiology

Rates of all types of porphyria taken together has been estimated to be approximately one in 25,000 in the United States.^[32] The worldwide prevalence has been estimated to be between one in 500 and one in 50,000 people.^[33]

History

Porphyrias have been detected in all races and in multiple ethnic groups on every continent, including Africans, Asians, Aboriginal Australians, Caucasians, Peruvians, Mexicans, Native Americans, and Sami. There are high incidence reports of AIP in areas of India and Scandinavia. More than 200 genetic variants of AIP are known, some of which are specific to families, although some strains have proven to be repeated mutations.

The underlying mechanism was first described by Felix Hoppe-Seyler in 1871,^[34] and acute porphyrias were described by the Dutch physician Barend Stokvis in 1889.^[35]^[36]

The links between porphyrias and mental illness have been noted for decades. In the early 1950s, patients with porphyrias (occasionally referred to as "porphyric hemophilia"^[37]) and severe symptoms of depression or catatonia were treated with electroshock therapy.

Vampires and werewolves

Porphyria has been suggested as an explanation for the origin of vampire and werewolf legends, based upon certain perceived similarities between the condition and the folklore.

In January 1964, L. Illis' 1963 paper, "On Porphyria and the Aetiology of Werwolves", was published in Proceedings of the Royal Society of Medicine. Later, Nancy Garden argued for a connection between porphyria and the vampire belief in her 1973 book, Vampires. In 1985, biochemist David Dolphin's paper for the American Association for the Advancement of Science, "Porphyria, Vampires, and Werewolves: The Aetiology of European Metamorphosis Legends", gained widespread media coverage, popularizing the idea.

The theory has been rejected by a few folklorists and researchers as not accurately describing the characteristics of the original werewolf and vampire legends or the disease, and as potentially stigmatizing sufferers of porphyria.^[38]^[39]

A 1995 article from the Postgraduate Medical Journal (via NIH) explains:

As it was believed that the folkloric vampire could move about freely in daylight hours, as opposed to the 20th century variant, congenital erythropoietic porphyria cannot readily explain the folkloric vampire but may be an explanation of the vampire as we know it in the 20th century. In addition, the folkloric vampire, when unearthed, was always described as looking quite healthy ("as they were in life"), while due to disfiguring aspects of the disease, sufferers would not have passed the exhumation test. Individuals with congenital erythropoietic porphyria do not crave blood. The enzyme (hematin) necessary to alleviate symptoms is not absorbed intact on oral ingestion, and drinking blood would have no beneficial effect on the sufferer. Finally, and most important, the fact that vampire reports were literally rampant in the 18th century, and that congenital erythropoietic porphyria is an extremely rare manifestation of a rare disease, makes it an unlikely explanation of the folkloric vampire.^[40]

Notable cases

George III in his coronation robes

The mental illness exhibited by King George III in the regency crisis of 1788 has inspired several attempts at retrospective diagnosis. The first, written in 1855, thirty-five years after his death, concluded that he suffered from acute mania. M. Guttmacher, in 1941, suggested manic-depressive psychosis as a more likely diagnosis. The first suggestion that a physical illness was the cause of King George's mental derangement came in 1966, in a paper called "The Insanity of King George III: A Classic Case of Porphyria",^[41] with a follow-up in 1968, "Porphyria in the Royal Houses of Stuart, Hanover and Prussia".^[42] The papers, by a mother/son psychiatrist team, were written as though the case for porphyria had been proven, but the response demonstrated that many experts, including those more intimately familiar with the manifestations of porphyria, were unconvinced. Many psychiatrists disagreed with the diagnosis, suggesting bipolar disorder as far more probable. The theory is treated in Purple Secret,^[43] which documents the ultimately unsuccessful search for genetic evidence of porphyria in the remains of royals suspected to have suffered from it.^[44] In 2005, it was suggested that arsenic (which is known to be porphyrogenic) given to George III with antimony may have caused his porphyria.^[45] Despite the lack of direct evidence, the notion that George III (and other members of the royal family) suffered from porphyria has achieved such popularity that many forget that it is merely a hypothesis. In 2010, an exhaustive analysis of historical records concluded that the porphyria claim was based on spurious and selective interpretation of contemporary medical and historical sources.^[46]

Mary Stuart c. 1578.

The mental illness of George III is the basis of the plot in The Madness of King George, a 1994 British film based upon the 1991 Alan Bennett play The Madness of George III. The closing credits of the film include the comment that the illness suffered by King George has been attributed to porphyria and that it is hereditary. Among other descendants of George III theorized by the authors of Purple Secret to have suffered from porphyria (based on analysis of their extensive and detailed medical correspondence) were his great-great-granddaughter Princess Charlotte of Prussia (Emperor William II's eldest sister) and her daughter Princess Feodora of Saxe-Meiningen. They uncovered better evidence that George III's great-great-great-grandson Prince William of Gloucester was reliably diagnosed with variegate porphyria.^[47]

It is believed that Mary, Queen of Scots – King George III's ancestor – also suffered from acute intermittent porphyria,^[48] although this is subject to much debate. It is assumed she inherited the disorder, if indeed she had it, from her father, James V of Scotland; both father and daughter endured well-documented attacks that could fall within the constellation of symptoms of porphyria.

Maria I of Portugal in a c. 1790s portrait attributed to Giuseppe Troni or Thomas Hickey.

Maria I of Portugal — known as "Maria the Pious" or "Maria the Mad" because of both her religious fervor and her acute mental illness, which made her incapable of handling state affairs after 1792 – is also thought to have suffered from porphyria. Francis Willis, the same physician who treated George III, was even summoned by the Portuguese court, but returned to England after the court limited the treatments he could oversee. Contemporary sources, such as Secretary of State for Foreign Affairs Luís Pinto, noted that the queen suffered from ever-worsening stomach pains and abdominal spasms: hallmarks of porphyria.^[49]

Vlad III was also said to have suffered from acute porphyria, which may have started the notion that vampires were allergic to sunlight.^[50]

Other commentators have suggested that Vincent van Gogh may have suffered from acute intermittent porphyria.^[51] It has also been speculated that King Nebuchadnezzar of Babylon suffered from some form of porphyria as described in Daniel 4.^[52] However, the symptoms of the various porphyrias are so extensive that a wide constellation of symptoms can be attributed to one or more of them.^{[citation needed]}

Physician Archie Cochrane was born with porphyria, which caused health problems throughout his life.^[53]

Paula Frías Allende, the daughter of the Chilean novelist Isabel Allende, fell into a porphyria-induced coma in 1991,^[54] which inspired Isabel to write the memoir Paula, dedicated to her.

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^ Singal, AK; Anderson, KE; Pagon, RA; Adam, MP; Ardinger, HH; Wallace, SE; Amemiya, A; Bean, LJH; Bird, TD; Dolan, CR; Fong, CT; Smith, RJH; Stephens, K (2013). "Variegate Porphyria". GeneReviews. Seattle, USA: University of Washington. PMID 23409300. Retrieved 18 April 2015.
^ Mustajoki P (1980). "Variegate porphyria. Twelve years' experience in Finland". The Quarterly journal of medicine. 49 (194): 191–203. PMID 7433635.
^ Lourenço, Charles Marquez; Lee, Chul; Anderson, Karl E. (2012). "Disorders of Haem Biosynthesis". In Saudubray, Jean-Marie; van den Berghe, Georges; Walter, John H. Inborn Metabolic Diseases: Diagnosis and Treatment (5th ed.). New York: Springer. pp. 521–532. ISBN 978-3-642-15719-6.
^ "Tests for Porphyria diagnosis". American Porphyria Foundation. Retrieved 17 May 2014.
^ Anderson KE, Bloomer JR, Bonkovsky HL, Kushner JP, Pierach CA, Pimstone NR, Desnick RJ (2005). "Recommendations for the diagnosis and treatment of the acute porphyrias". Ann. Intern. Med. 142 (6): 439–50. doi:10.7326/0003-4819-142-6-200503150-00010. PMID 15767622.
^ Berkó G, Durkó I (Dec 19, 1971). "[Modification of the Mauzerall-Granick method for the determination of urinary aminolevulinic acid].". Orvosi hetilap (in Hungarian). 112 (51): 3085–6. PMID 5136653.
^ Woods, J.S. (1995). "Porphyrin metabolism as indicator of metal exposure and toxicity". In Goyer, R.A. & Cherian, M.G. Toxicology of metals, biochemical aspects. 115. Berlin: Springer. pp. 19–52, Chapter 2.
^ patient.co.uk. "Porphyrias - immediate management". Retrieved 19 October 2016.
^ British Medical Association, Royal Pharmaceutical Society of Great Britain (March 2009). "9.8.2: Acute porphyrias". British National Formulary (BNF 57). United Kingdom: BMJ Group and RPS Publishing. p. 549. ISBN 978-0-85369-845-6.
^ American Porphyria Foundation (2010). "Panhematin for Acute Porphyria". Retrieved 5 August 2010.
^ Cherem JH, Malagon J, Nellen H (2005). "Cimetidine and acute intermittent porphyria". Ann. Intern. Med. 143 (9): 694–5. doi:10.7326/0003-4819-143-9-200511010-00023. PMID 16263899.
^ Birgisdottir BT, Asgeirsson H, Arnardottir S, Jonsson JJ, Vidarsson B (2010). "[Acute abdominal pain caused by acute intermittent porphyria - case report and review of the literature]". Laeknabladid (in Icelandic). 96 (6): 413–18. PMID 20519771.
^ ^a ^b Tsao YC, Niu DM, Chen JT, Lin CY, Lin YY, Liao KK (2010). "Gabapentin reduces neurovisceral pain of porphyria". Acta Neurol Taiwan. 19 (2): 112–5. PMID 20714961.
^ Murray ED, Buttner N, Price BH. (2012) Depression and Psychosis in Neurological Practice. In: Neurology in Clinical Practice, 6th Edition. Bradley WG, Daroff RB, Fenichel GM, Jankovic J (eds.) Butterworth Heinemann. April 12, 2012. ISBN 978-1437704341
^ Martin A Crook.2006. Clinical chemistry and Metabolic Medicine. seventh edition. Hodder Arnold. ISBN 0-340-90616-2
^ Faraci M, Morreale G, Boeri E, Lanino E, Dallorso S, Dini G, Scuderi F, Cohen A, Cappelli B (2008). "Unrelated HSCT in an adolescent affected by congenital erythropoietic porphyria". Pediatr Transplant. 12 (1): 117–120. doi:10.1111/j.1399-3046.2007.00842.x. PMID 18186900.
^ "Community register of medicinal products for human use". http://ec.europa.eu. European Commission. Retrieved 24 December 2014. External link in |website= (help)
^ eMedicine > Porphyria, Cutaneous Authors: Vikramjit S Kanwar, Thomas G DeLoughery, Richard E Frye and Darius J Adams. Updated: July 27, 2010.
^ Genetics Home Reference > Porphyria Reviewed July 2009
^ Hoppe-Seyler F (1871). "Das Hämatin". Tubinger Med-Chem Untersuch. 4: 523–33.
^ Nick Lane (2002-12-16). "Born to the purple: the story of porphyria". Scientific American. Retrieved 5 August 2008.
^ Stokvis BJ. "Over twee zeldzame kleurstoffen in urine van zieken". Nederl Tijdschr Geneeskd (in Dutch). 2: 409–417. Reprinted in Stokvis BJ (December 1989). "Over twee zeldzame kleurstoffen in urine van zieken". Ned Tijdschr Geneeskd (in Dutch). 133 (51): 2562–70. PMID 2689889.
^ Denver, Joness. "An Encyclopaedia of Obscure Medicine". Published by University Books, Inc., 1959.
^ American Vampires: Fans, Victims, Practitioners, Norine Dresser, W. W. Norton & Company, 1989.
^ "Did vampires suffer from the disease porphyria — or not?" The Straight Dope, May 7, 1999.
^ Cox, Ann M. (1995). "Porphyria and vampirism: another myth in the making". Postgraduate Medical Journal. 71 (841): 643–644. doi:10.1136/pgmj.71.841.643-a. PMC 2398345. PMID 7494765.
^ Macalpine I, Hunter R (January 1966). "The "insanity" of King George 3d: a classic case of porphyria". Br Med J. 1 (5479): 65–71. doi:10.1136/bmj.1.5479.65. PMC 1843211. PMID 5323262.
^ Macalpine I, Hunter R, Rimington C (January 1968). "Porphyria in the royal houses of Stuart, Hanover, and Prussia. A follow-up study of George 3d's illness". Br Med J. 1 (5583): 7–18. doi:10.1136/bmj.1.5583.7. PMC 1984936. PMID 4866084.
^ Warren, Martin; Rh̲l, John C. G.; Hunt, David C. (1998). Purple secret: genes, "madness" and the Royal houses of Europe. London: Bantam Books. ISBN 0-593-04148-8.
^ The authors demonstrated a single point mutation in the PPOX gene, but not one that has been associated with disease.
^ Cox TM, Jack N, Lofthouse S, Watling J, Haines J, Warren MJ (2005). "King George III and porphyria: an elemental hypothesis and investigation". The Lancet. 366 (9482): 332–335. doi:10.1016/S0140-6736(05)66991-7. PMID 16039338.
^ Peters TJ, Wilkinson D (2010). "King George III and porphyria: a clinical re-examination of the historical evidence". History of Psychiatry. 21 (81 Pt 1): 3–19. doi:10.1177/0957154X09102616. PMID 21877427.
^ Smith, Martin; Smith, Alison (2009-12-21). "Tetrapyrroles: Birth, Life and Death". ISBN 9780387785189. Retrieved 9 April 2014.
^ "bulletin: The University of Sussex NewsletterThe Royal Family's Toxic Time-Bomb Friday 25th June 1999".
^ Roberts, Jenifer (2009). The Madness of Queen Maria [The Remarkable Life of Maria I of Portugal]. Templeton Press. ISBN 978-0954558918.
^ "BBC News - UK - Charles visits 'relative' Dracula's home".
^ Loftus LS, Arnold WN (1991). "Vincent van Gogh's illness: acute intermittent porphyria?". BMJ. 303 (6817): 1589–1591. doi:10.1136/bmj.303.6817.1589. PMC 1676250. PMID 1773180.
^ Beveridge A (2003). "The madness of politics". J R Soc Med. 96 (12): 602–604. doi:10.1258/jrsm.96.12.602. PMC 539664. PMID 14645615.
^ Cochrane, Archibald L; Blythe, Max (2009) [1989]. One Man's Medicine: An Autobiography of Professor Archie Cochrane. Cardiff: Cardiff University. ISBN 978-0-9540884-3-9.
^ Allende, Isabel (1995). Paula. New York, NY: HarperCollins. ISBN 0-06-017253-3.

External links

Porphyria at DMOZ
The Drug Database for Acute Porphyria - comprehensive database on drug porphyrinogenicity
Orphanet's disease page on Porphyria

UpToDate Contents

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1. 急性間欠性ポルフィリン症の病因、臨床症状および診断 pathogenesis clinical manifestations and diagnosis of acute intermittent porphyria
2. ポルフィリン症：概要 porphyrias an overview
3. 急性間欠性ポルフィリン症のマネージメントおよび予後 management and prognosis of acute intermittent porphyria
4. 異型ポルフィリン症 variegate porphyria
5. 晩発性皮膚ポルフィリン症および肝骨髄性ポルフィリン症：マネージメントおよび予後 porphyria cutanea tarda and hepatoerythropoietic porphyria management and prognosis

English Journal

Human hydroxymethylbilane synthase: Molecular dynamics of the pyrrole chain elongation identifies step-specific residues that cause AIP.

Bung N1, Roy A1, Chen B2, Das D1, Pradhan M1, Yasuda M2, New MI3, Desnick RJ3, Bulusu G4.
Proceedings of the National Academy of Sciences of the United States of America.Proc Natl Acad Sci U S A.2018 Apr 24;115(17):E4071-E4080. doi: 10.1073/pnas.1719267115. Epub 2018 Apr 9.
PMID 29632172

Whole Exome Sequencing Identified a Novel Heterozygous Mutation in HMBS Gene in a Chinese Patient With Acute Intermittent Porphyria With Rare Type of Mild Anemia.

Zheng Y1, Xu J2, Liang S3, Lin D1, Banerjee S4.
Frontiers in genetics.Front Genet.2018 Apr 20;9:129. doi: 10.3389/fgene.2018.00129. eCollection 2018.
PMID 29731767

Medical and financial burden of acute intermittent porphyria.

Neeleman RA1, Wagenmakers MAEM1, Koole-Lesuis RH1, Mijnhout GS2, Wilson JHP1, Friesema ECH1, Langendonk JG3.
Journal of inherited metabolic disease.J Inherit Metab Dis.2018 Apr 19. doi: 10.1007/s10545-018-0178-z. [Epub ahead of print]
PMID 29675607

Japanese Journal

肝障害に併発する精神症状とその治療的アプローチ (特集身体疾患に見られる精神症状の診断と治療)

臨床精神薬理 20(4), 421-427, 2017-04
NAID 40021179032

Acute Intermittent Porphyria Presenting with Posterior Reversible Encephalopathy Syndrome, Accompanied by Prolonged Vasoconstriction

Internal Medicine 56(6), 713-717, 2017
NAID 130005450342

Transient Worsening of Photosensitivity due to Cholelithiasis in a Variegate Porphyria Patient

Internal Medicine 55(20), 2965-2969, 2016
NAID 130005430011

Related Pictures

★リンクテーブル★

リンク元	「急性ポルフィリン症」
関連記事	「acute」

「急性ポルフィリン症」

Porphyria
	Left figure is urine on the first day while the right figure is urine after 3 days of sun exposures showing the classic change in color to purple.
Classification and external resources
Pronunciation	/pɔːrˈfɪriə/, /pɔːrˈfɪəriə/ or /pɔːrˈfaɪriə/
Specialty	Rheumatology, dermatology
ICD-10	E80.0-E80.2
ICD-9-CM	277.1
MedlinePlus	001208
Patient UK	Porphyria
MeSH	C17.800.849.617
Orphanet	738
	[edit on Wikidata]

　　[★]

英: acute porphyria
関: 急性間欠性・ルフィリン症

「acute」

　　[★]

adj.

(疾患)急性の、急性型の、急性的な。(形状が)鋭い、鋭角の。(感覚、才知などが)鋭い。明敏な、鋭い眼識のある。

関: acutely、quick、sharp

[NIH2009GHR-1] "porphyria". GHR. July 2009. Retrieved 26 October 2016.

[NIH2014-2] ^ ^a ^b ^c ^d ^e ^f "Porphyria". NIDDK. February 2014. Retrieved 25 October 2016.

[McM2014-3] McManus, Linda (2014). Pathobiology of Human Disease: A Dynamic Encyclopedia of Disease Mechanisms. Elsevier. p. 1488. ISBN 9780123864574.

[4] Albers JW, Fink JK (2004). "Porphyric neuropathy". Muscle Nerve. 30 (4): 410–422. doi:10.1002/mus.20137. PMID 15372536.

[APF-5] Tishler, PV. "About Porphyria: Safety database". Porphyria Drug Safety Database. American Porphyria Foundation. Retrieved 26 March 2014.

[EPN-6] Brun, A. "napos". The Drug Database for Acute Porphyria. European Porphyria Network. Retrieved 26 March 2014.

[BNF-7] Joint Formulary Committee (2013). British National Formulary (BNF) (65 ed.). London, UK: Pharmaceutical Press. p. 663. ISBN 978-0-85711-084-8.

[8] rh.nlm.nih.gov/condition/x-linked sideroblastic anemia

[9] ttp://www.orpha.net/consor/cgi-bin/OC

[brschemi18-1-10] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Table 18-1 in: Marks, Dawn B.; Swanson, Todd; Sandra I Kim; Marc Glucksman (2007). Biochemistry and molecular biology. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. ISBN 0-7817-8624-X.

[RD-11] Overview of the Porphyrias at The Porphyrias Consortium (a part of NIH Rare Diseases Clinical Research Network (RDCRN)) Retrieved June 2011

[medscape-12] Medscape - Diseases of Tetrapyrrole Metabolism - Refsum Disease and the Hepatic Porphyrias Author: Norman C Reynolds. Chief Editor: Stephen A Berman. Updated: Mar 23, 2009

[Thadani-13] Thadani H, Deacon A, Peters T (2000). "Diagnosis and management of porphyria". BMJ. 320 (7250): 1647–1651. doi:10.1136/bmj.320.7250.1647. PMC 1127427. PMID 10856069.

[Hann2006-14] Arceci, Robert.; Hann, Ian M.; Smith, Owen P. (2006). Pediatric hematolog. Malden, Mass.: Blackwell Pub. ISBN 978-1-4051-3400-2.

[VPNBK-15] Singal, AK; Anderson, KE; Pagon, RA; Adam, MP; Ardinger, HH; Wallace, SE; Amemiya, A; Bean, LJH; Bird, TD; Dolan, CR; Fong, CT; Smith, RJH; Stephens, K (2013). "Variegate Porphyria". GeneReviews. Seattle, USA: University of Washington. PMID 23409300. Retrieved 18 April 2015.

[16] Mustajoki P (1980). "Variegate porphyria. Twelve years' experience in Finland". The Quarterly journal of medicine. 49 (194): 191–203. PMID 7433635.

[saudubray-17] Lourenço, Charles Marquez; Lee, Chul; Anderson, Karl E. (2012). "Disorders of Haem Biosynthesis". In Saudubray, Jean-Marie; van den Berghe, Georges; Walter, John H. Inborn Metabolic Diseases: Diagnosis and Treatment (5th ed.). New York: Springer. pp. 521–532. ISBN 978-3-642-15719-6.

[18] "Tests for Porphyria diagnosis". American Porphyria Foundation. Retrieved 17 May 2014.

[Anderson-19] Anderson KE, Bloomer JR, Bonkovsky HL, Kushner JP, Pierach CA, Pimstone NR, Desnick RJ (2005). "Recommendations for the diagnosis and treatment of the acute porphyrias". Ann. Intern. Med. 142 (6): 439–50. doi:10.7326/0003-4819-142-6-200503150-00010. PMID 15767622.

[20] Berkó G, Durkó I (Dec 19, 1971). "[Modification of the Mauzerall-Granick method for the determination of urinary aminolevulinic acid].". Orvosi hetilap (in Hungarian). 112 (51): 3085–6. PMID 5136653.

[Woods1995-21] Woods, J.S. (1995). "Porphyrin metabolism as indicator of metal exposure and toxicity". In Goyer, R.A. & Cherian, M.G. Toxicology of metals, biochemical aspects. 115. Berlin: Springer. pp. 19–52, Chapter 2.

[22] tient.co.uk. "Porphyrias - immediate management". Retrieved 19 October 2016.

[23] British Medical Association, Royal Pharmaceutical Society of Great Britain (March 2009). "9.8.2: Acute porphyrias". British National Formulary (BNF 57). United Kingdom: BMJ Group and RPS Publishing. p. 549. ISBN 978-0-85369-845-6.

[24] American Porphyria Foundation (2010). "Panhematin for Acute Porphyria". Retrieved 5 August 2010.

[pmid16263899-25] Cherem JH, Malagon J, Nellen H (2005). "Cimetidine and acute intermittent porphyria". Ann. Intern. Med. 143 (9): 694–5. doi:10.7326/0003-4819-143-9-200511010-00023. PMID 16263899.

[pmid20519771-26] Birgisdottir BT, Asgeirsson H, Arnardottir S, Jonsson JJ, Vidarsson B (2010). "[Acute abdominal pain caused by acute intermittent porphyria - case report and review of the literature]". Laeknabladid (in Icelandic). 96 (6): 413–18. PMID 20519771.

[Tsao_2010_112.E2.80.93115-27] Tsao YC, Niu DM, Chen JT, Lin CY, Lin YY, Liao KK (2010). "Gabapentin reduces neurovisceral pain of porphyria". Acta Neurol Taiwan. 19 (2): 112–5. PMID 20714961.

[28] Murray ED, Buttner N, Price BH. (2012) Depression and Psychosis in Neurological Practice. In: Neurology in Clinical Practice, 6th Edition. Bradley WG, Daroff RB, Fenichel GM, Jankovic J (eds.) Butterworth Heinemann. April 12, 2012. ISBN 978-1437704341

[29] Martin A Crook.2006. Clinical chemistry and Metabolic Medicine. seventh edition. Hodder Arnold. ISBN 0-340-90616-2

[pmid18186900-30] Faraci M, Morreale G, Boeri E, Lanino E, Dallorso S, Dini G, Scuderi F, Cohen A, Cappelli B (2008). "Unrelated HSCT in an adolescent affected by congenital erythropoietic porphyria". Pediatr Transplant. 12 (1): 117–120. doi:10.1111/j.1399-3046.2007.00842.x. PMID 18186900.

[31] "Community register of medicinal products for human use". http://ec.europa.eu. European Commission. Retrieved 24 December 2014. External link in |website= (help)

[32] Medicine > Porphyria, Cutaneous Authors: Vikramjit S Kanwar, Thomas G DeLoughery, Richard E Frye and Darius J Adams. Updated: July 27, 2010.

[33] Genetics Home Reference > Porphyria Reviewed July 2009

[34] Hoppe-Seyler F (1871). "Das Hämatin". Tubinger Med-Chem Untersuch. 4: 523–33.

[Lane-35] Nick Lane (2002-12-16). "Born to the purple: the story of porphyria". Scientific American. Retrieved 5 August 2008.

[36] Stokvis BJ. "Over twee zeldzame kleurstoffen in urine van zieken". Nederl Tijdschr Geneeskd (in Dutch). 2: 409–417. Reprinted in Stokvis BJ (December 1989). "Over twee zeldzame kleurstoffen in urine van zieken". Ned Tijdschr Geneeskd (in Dutch). 133 (51): 2562–70. PMID 2689889.

[37] Denver, Joness. "An Encyclopaedia of Obscure Medicine". Published by University Books, Inc., 1959.

[38] American Vampires: Fans, Victims, Practitioners, Norine Dresser, W. W. Norton & Company, 1989.

[39] "Did vampires suffer from the disease porphyria — or not?" The Straight Dope, May 7, 1999.

[40] Cox, Ann M. (1995). "Porphyria and vampirism: another myth in the making". Postgraduate Medical Journal. 71 (841): 643–644. doi:10.1136/pgmj.71.841.643-a. PMC 2398345. PMID 7494765.

[41] Macalpine I, Hunter R (January 1966). "The "insanity" of King George 3d: a classic case of porphyria". Br Med J. 1 (5479): 65–71. doi:10.1136/bmj.1.5479.65. PMC 1843211. PMID 5323262.

[42] Macalpine I, Hunter R, Rimington C (January 1968). "Porphyria in the royal houses of Stuart, Hanover, and Prussia. A follow-up study of George 3d's illness". Br Med J. 1 (5583): 7–18. doi:10.1136/bmj.1.5583.7. PMC 1984936. PMID 4866084.

[43] Warren, Martin; Rh̲l, John C. G.; Hunt, David C. (1998). Purple secret: genes, "madness" and the Royal houses of Europe. London: Bantam Books. ISBN 0-593-04148-8.

[44] The authors demonstrated a single point mutation in the PPOX gene, but not one that has been associated with disease.

[45] Cox TM, Jack N, Lofthouse S, Watling J, Haines J, Warren MJ (2005). "King George III and porphyria: an elemental hypothesis and investigation". The Lancet. 366 (9482): 332–335. doi:10.1016/S0140-6736(05)66991-7. PMID 16039338.

[46] Peters TJ, Wilkinson D (2010). "King George III and porphyria: a clinical re-examination of the historical evidence". History of Psychiatry. 21 (81 Pt 1): 3–19. doi:10.1177/0957154X09102616. PMID 21877427.

[47] Smith, Martin; Smith, Alison (2009-12-21). "Tetrapyrroles: Birth, Life and Death". ISBN 9780387785189. Retrieved 9 April 2014.

[48] "bulletin: The University of Sussex NewsletterThe Royal Family's Toxic Time-Bomb Friday 25th June 1999".

[49] Roberts, Jenifer (2009). The Madness of Queen Maria [The Remarkable Life of Maria I of Portugal]. Templeton Press. ISBN 978-0954558918.

[50] "BBC News - UK - Charles visits 'relative' Dracula's home".

[51] Loftus LS, Arnold WN (1991). "Vincent van Gogh's illness: acute intermittent porphyria?". BMJ. 303 (6817): 1589–1591. doi:10.1136/bmj.303.6817.1589. PMC 1676250. PMID 1773180.

[52] Beveridge A (2003). "The madness of politics". J R Soc Med. 96 (12): 602–604. doi:10.1258/jrsm.96.12.602. PMC 539664. PMID 14645615.

[outline-53] Cochrane, Archibald L; Blythe, Max (2009) [1989]. One Man's Medicine: An Autobiography of Professor Archie Cochrane. Cardiff: Cardiff University. ISBN 978-0-9540884-3-9.

[54] Allende, Isabel (1995). Paula. New York, NY: HarperCollins. ISBN 0-06-017253-3.

匿名

検索

案内

acute porphyria