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anemia resulting from eating fava beans; victims have an inherited blood abnormality and enzyme deficiency

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/05/15 22:55:24」(JST)

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Glucose-6-phosphate dehydrogenase deficiency is an X-linked recessive hereditary disease characterised by abnormally low levels of glucose-6-phosphate dehydrogenase (abbreviated G6PD or G6PDH), a metabolic enzyme involved in the pentose phosphate pathway, especially important in red blood cell metabolism. G6PD deficiency is the most common human enzyme defect.^[1] Individuals with the disease may exhibit nonimmune hemolytic anemia in response to a number of causes, most commonly infection or exposure to certain medications or chemicals. G6PD deficiency is closely linked to favism, a disorder characterized by a hemolytic reaction to consumption of broad beans, with a name derived from the Italian name of the broad bean (fava). The name favism is sometimes used to refer to the enzyme deficiency as a whole, although this is misleading as not all people with G6PD deficiency will manifest a physically observable reaction to consumption of broad beans.

Classification [edit]

The World Health Organization classifies G6PD genetic variants into five classes, the first three of which are deficiency states.^[2]

Severe deficiency (<10% activity) with chronic (nonspherocytic) hemolytic anemia
Severe deficiency (<10% activity), with intermittent hemolysis
Mild deficiency (10-60% activity), hemolysis with stressors only
Non-deficient variant, no clinical sequelae
Increased enzyme activity, no clinical

Signs and symptoms [edit]

Most individuals with G6PD deficiency are asymptomatic.

Symptomatic patients are almost exclusively male, due to the X-linked pattern of inheritance, but female carriers can be clinically affected due to unfavorable lyonization, where random inactivation of an X-chromosome in certain cells creates a population of G6PD-deficient red blood cells coexisting with normal red cells. A typical female with one affected X chromosome will show the deficiency in approximately half of her red blood cells. However, in rare cases, including double X deficiency, the ratio can be much more than half, making the individual almost as sensitive as a male.

Abnormal red blood cell breakdown (hemolysis) in G6PD deficiency can manifest in a number of ways, including the following:

Prolonged neonatal jaundice, possibly leading to kernicterus (arguably the most serious complication of G6PD deficiency)
Hemolytic crises in response to:
- Illness (especially infections)
- Certain drugs (see below)
- Certain foods, most notably broad beans
- Certain chemicals
- Diabetic ketoacidosis
Very severe crises can cause acute renal failure

Favism may be formally defined as a haemolytic response to the consumption of broad beans. All individuals with favism show G6PD deficiency. However, not all individuals with G6PD deficiency show favism. For example, in a small study of 757 Saudi men, more than 42% showed a variant of G6PD deficiency, but none displayed symptoms of favism.^[3] Favism is known to be more prevalent in infants and children, and G6PD genetic variant can influence chemical sensitivity.^[4] Other than this, the specifics of the chemical relationship between favism and G6PD are not well understood.

Cause [edit]

Environmental triggers [edit]

Many substances are potentially harmful to people with G6PD deficiency. Variation in response to these substances makes individual predictions difficult. Antimalarial drugs that can cause acute haemolysis in people with G6PD deficiency include primaquine, pamaquine, and chloroquine. There is evidence that other antimalarials may also exacerbate G6PD deficiency, but only at higher doses. Sulfonamides (such as sulfanilamide, sulfamethoxazole, and mafenide), thiazolesulfone, methylene blue, and naphthalene should also be avoided by people with G6PD deficiency, as should certain analgesics (such as aspirin, phenazopyridine, and acetanilide) and a few non-sulfa antibiotics (nalidixic acid, nitrofurantoin, isoniazid, dapsone, and furazolidone).^[1]^[5]^[6] Henna has been known to cause haemolytic crisis in G6PD-deficient infants.^[7]

Genetics [edit]

The two variants (G6PD A− and G6PD Mediterranean) are the most commonly inherited variants. G6PD A− has an occurrence of 10% of American blacks while G6PD Mediterranean is prevalent in the Middle East. The known distribution of the disease is largely limited to people of Mediterranean origins (Spaniards, Italians, Greeks, Armenians, and Jews).^[8] These variants are believed to stem from a protective effect against Plasmodium falciparum and Plasmodium vivax malaria.^[9]

All mutations that cause G6PD deficiency are found on the long arm of the X chromosome, on band Xq28. The G6PD gene spans some 18.5 kilobases.^[5] The following variants and mutations are well-known and described:

Table 1. Descriptive mutations and variants
Variants or mutations				Gene			Protein
Designation	Short name	Isoform G6PD-Protein	OMIM-Code	Type	Subtype	Position	Position	Structure change	Function change
G6PD-A(+)	Gd-A(+)	G6PD A	+305900.0001	Polymorphism nucleotide	A→G	376 (Exon 5)	126	Asparagine→Aspartic acid (ASN126ASP)	No enzyme defect (variant)
G6PD-A(-)	Gd-A(-)	G6PD A	+305900.0002	Substitution nucleotide	G→A	376 (Exon 5) and 202	68 and 126	Valine→Methionine (VAL68MET) Asparagine→Aspartic acid (ASN126ASP)
G6PD-Mediterran	Gd-Med	G6PD B	+305900.0006	Substitution nucleotide	C→T	563 (Exon 6)	188	Serine→Phenylalanine (SER188PHE)	Class II
G6PD-Canton	Gd-Canton	G6PD B	+305900.0021	Substitution nucleotide	G→T	1376	459	Arginine→Leucine (ARG459LEU)	Class II
G6PD-Chatham	Gd-Chatham	G6PD	+305900.0003	Substitution nucleotide	G→A	1003	335	Alanine→Threonine (ALA335THR)	Class II
G6PD-Cosenza	Gd-Cosenza	G6PD B	+305900.0059	Substitution nucleotide	G→A	1376	459	Arginine→Proline (ARG459PRO)	G6PD-activity <10%, thus high portion of patients.
G6PD-Mahidol	Gd-Mahidol	G6PD	+305900.0005	Substitution nucleotide	G→A	487 (Exon 6)	163	Glycine→Serine (GLY163SER)	Class II
G6PD-Orissa	Gd-Orissa	G6PD	+305900.0047	Substitution nucleotide			44	Alanine→Glycine (ALA44GLY)	NADP-binding place affected. Higher stability than other variants.
G6PD-Asahi	Gd-Asahi	G6PD A-	+305900.0054	Substitution nucleotide (several)	A→G ± G→A	376 (Exon 5) 202	126 68	Asparagine→Aspartic acid (ASN126ASP) Valine→Methionine (VAL68MET)	Class III.

Pathophysiology [edit]

Glucose-6-phosphate dehydrogenase (G6PD) is an enzyme in the pentose phosphate pathway (see image, also known as the HMP shunt pathway). G6PD converts glucose-6-phosphate into 6-phosphoglucono-δ-lactone and is the rate-limiting enzyme of this metabolic pathway that supplies reducing energy to cells by maintaining the level of the co-enzyme nicotinamide adenine dinucleotide phosphate (NADPH). The NADPH in turn maintains the supply of reduced glutathione in the cells that is used to mop up free radicals that cause oxidative damage.

The G6PD / NADPH pathway is the only source of reduced glutathione in red blood cells (erythrocytes). The role of red cells as oxygen carriers puts them at substantial risk of damage from oxidizing free radicals except for the protective effect of G6PD/NADPH/glutathione.

People with G6PD deficiency are therefore at risk of hemolytic anemia in states of oxidative stress. Oxidative stress can result from infection and from chemical exposure to medication and certain foods. Broad beans, e.g., fava beans, contain high levels of vicine, divicine, convicine and isouramil, all of which are oxidants.

When all remaining reduced glutathione is consumed, enzymes and other proteins (including hemoglobin) are subsequently damaged by the oxidants, leading to electrolyte imbalance, cross-bonding and protein deposition in the red cell membranes. Damaged red cells are phagocytosed and sequestered (taken out of circulation) in the spleen. The hemoglobin is metabolized to bilirubin (causing jaundice at high concentrations). The red cells rarely disintegrate in the circulation, so hemoglobin is rarely excreted directly by the kidney, but this can occur in severe cases, causing acute renal failure .

Deficiency of G6PD in the alternative pathway causes the build up of glucose and thus there is an increase of advanced glycation endproducts (AGE). The deficiency also reduces the amount of NADPH, which is required for the formation of nitric oxide (NO). The high prevalence of diabetes mellitus type 2 and hypertension in Afro-Caribbeans in the West could be directly related to the incidence of G6PD deficiency in those populations.^[10]

Although female carriers can have a mild form of G6PD deficiency (dependent on the degree of inactivation of the unaffected X chromosome – see lyonization), homozygous females have been described; in these females there is co-incidence of a rare immune disorder termed chronic granulomatous disease (CGD).

Diagnosis [edit]

The diagnosis is generally suspected when patients from certain ethnic groups (see epidemiology) develop anemia, jaundice and symptoms of hemolysis after challenges from any of the above causes, especially when there is a positive family history.

Generally, tests will include:

Complete blood count and reticulocyte count; in active G6PD deficiency, Heinz bodies can be seen in red blood cells on a blood film;
Liver enzymes (to exclude other causes of jaundice);
Lactate dehydrogenase (elevated in hemolysis and a marker of hemolytic severity)
Haptoglobin (decreased in hemolysis);
A "direct antiglobulin test" (Coombs' test) – this should be negative, as hemolysis in G6PD is not immune-mediated;

When there are sufficient grounds to suspect G6PD, a direct test for G6PD is the "Beutler fluorescent spot test", which has largely replaced an older test (the Motulsky dye-decolouration test). Other possibilities are direct DNA testing and/or sequencing of the G6PD gene.

The Beutler fluorescent spot test is a rapid and inexpensive test that visually identifies NADPH produced by G6PD under ultraviolet light. When the blood spot does not fluoresce, the test is positive; it can be falsely negative in patients who are actively hemolysing. It can therefore only be done 2–3 weeks after a hemolytic episode.

When a macrophage in the spleen identifies a RBC with a Heinz body, it removes the precipitate and a small piece of the membrane, leading to characteristic "bite cells". However, if a large number of Heinz bodies are produced, as in the case of G6PD deficiency, some Heinz bodies will nonetheless be visible when viewing RBCs that have been stained with crystal violet. This easy and inexpensive test can lead to an initial presumption of G6PD deficiency, which can be confirmed with the other tests.

Treatment [edit]

The most important measure is prevention – avoidance of the drugs and foods that cause hemolysis. Vaccination against some common pathogens (e.g. hepatitis A and hepatitis B) may prevent infection-induced attacks.^[11]

In the acute phase of hemolysis, blood transfusions might be necessary, or even dialysis in acute renal failure. Blood transfusion is an important symptomatic measure, as the transfused red cells are generally not G6PD deficient and will live a normal lifespan in the recipient's circulation.

Some patients may benefit from removal of the spleen (splenectomy),^[12] as this is an important site of red cell destruction. Folic acid should be used in any disorder featuring a high red cell turnover. Although vitamin E and selenium have antioxidant properties, their use does not decrease the severity of G6PD deficiency.

Epidemiology [edit]

G6PD deficiency is the most common human enzyme defect, being present in more than 400 million people worldwide.^[13] African, Middle Eastern and South Asian people are affected the most along with those who are mixed with any of the above.^[14] A side effect of this disease is that it confers protection against malaria,^[15] in particular the form of malaria caused by Plasmodium falciparum, the most deadly form of malaria. A similar relationship exists between malaria and sickle-cell disease. One theory to explain this is that cells infected with the Plasmodium parasite are cleared more rapidly by the spleen. This phenomenon might give G6PD deficiency carriers an evolutionary advantage by increasing their fitness in malarial endemic environments.

Prognosis [edit]

G6PD-deficient individuals do not appear to acquire any illnesses more frequently than other people, and may have less risk than other people for acquiring ischemic heart disease and cerebrovascular disease.^[16]

History [edit]

Favism is a disorder characterized by hemolytic anemia in response to ingestion of fava beans. Favism as a diagnosis has been known since antiquity. One theory for the Pythagoreans' avoidance of beans is avoidance of favism, but more likely, this was a philosophical matter, such as the belief that beans and humans were created from the same material.^[17]^[18]

The modern understanding of the condition began with the analysis of patients who exhibited sensitivity to primaquine.^[19] The discovery of G6PD deficiency relied heavily upon the testing of prisoner volunteers at Illinois State Penitentiary, although today such studies cannot be performed. When some prisoners were given the drug primaquine, some developed hemolytic anemia but others did not. After studying the mechanism through Cr⁵¹ testing, it was conclusively shown that the hemolytic effect of primaquine was due to an intrinsic defect of erythrocytes.^[20]

References [edit]

^ ^a ^b Frank JE (October 2005). "Diagnosis and management of G6PD deficiency". Am Fam Physician 72 (7): 1277–82. PMID 16225031.
^ WHO Working Group (1989). "Glucose-6-phosphate dehydrogenase deficiency.". Bulletin of the World Health Organization 67 (6): 601–11. PMID 2633878.
^ Al-Ali, AK (1996). "Common G6PD variant from Saudi population and its prevalence" (PDF). Annals of Saudi Medicine 16 (6): 654–6. ISSN 02564947. PMID 17429252. Retrieved May 17, 2009. "This has led to the identification of one genetically determined common variant, 'G6PD Mediterranean.' The overall prevalence rate of this deficiency in these areas was determined to be in excess of 42%. None of the subjects studied displayed any sign of favism"
^ Luzzatto, L. "GLUCOSE-6-PHOSPHATE DEHYDROGENASE DEFICIENCY." Advanced Medicine-Twelve: Proceedings of a Conference Held at the Royal College of Physicians of London, 11-14 February 1985. Vol. 21. Churchill Livingstone, 1986.
^ ^a ^b Warrell, David A.; Timothy M. Cox, John D. Firth, Edward J. Benz (2005). Oxford Textbook of Medicine, Volume Three. Oxford University Press. pp. 720–725. ISBN 0-19-857013-9.
^ A comprehensive list of drugs and chemicals that are potentially harmful in G6PD deficiency can be found in Beutler E (December 1994). "G6PD deficiency". Blood 84 (11): 3613–36. PMID 7949118. .
^ Raupp P, Hassan JA, Varughese M, Kristiansson B (2001). "Henna causes life threatening haemolysis in glucose-6-phosphate dehydrogenase deficiency". Arch. Dis. Child. 85 (5): 411–2. doi:10.1136/adc.85.5.411. PMC 1718961. PMID 11668106.
^ http://www.britannica.com/EBchecked/topic/202897/favism
^ Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson; Aster, Jon (2009-05-28). Robbins and Cotran Pathologic Basis of Disease, Professional Edition: Expert Consult - Online (Robbins Pathology) (Kindle Locations 33351-33354). Elsevier Health. Kindle Edition.
^ Gaskin RS, Estwick D, Peddi R (2001). "G6PD deficiency: its role in the high prevalence of hypertension and diabetes mellitus". Ethnicity & disease 11 (4): 749–54. PMID 11763298.
^ Monga A, Makkar RP, Arora A, Mukhopadhyay S, Gupta AK (July 2003). "Case report: Acute hepatitis E infection with coexistent glucose-6-phosphate dehydrogenase deficiency". Can J Infect Dis 14 (4): 230–1. PMC 2094938. PMID 18159462.
^ Hamilton JW, Jones FG, McMullin MF (August 2004). "Glucose-6-phosphate dehydrogenase Guadalajara – a case of chronic non-spherocytic haemolytic anaemia responding to splenectomy and the role of splenectomy in this disorder". Hematology 9 (4): 307–9. doi:10.1080/10245330410001714211. PMID 15621740.
^ Cappellini MD, Fiorelli G (January 2008). "Glucose-6-phosphate dehydrogenase deficiency". Lancet 371 (9606): 64–74. doi:10.1016/S0140-6736(08)60073-2. PMID 18177777.
^ G-6-PD FAQ section
^ Mehta A, Mason PJ, Vulliamy TJ (2000). "Glucose-6-phosphate dehydrogenase deficiency". Baillieres Best Pract. Res. Clin. Haematol. 13 (1): 21–38. PMID 10916676.
^ thefreedictionary.com > glucose-6-phosphate dehydrogenase deficiency citing: Gale Encyclopedia of Medicine. Copyright 2008
^ Gabrielle Hatfield, review of Frederick J. Simoons, Plants of Life, Plants of Death, University of Wisconsin Press, 1999. ISBN 0-299-15904-3. In Folklore 111:317–318 (2000). at JSTOR
^ Rendall, Steven; Riedweg, Christoph (2005). Pythagoras: his life, teaching, and influence. Ithaca, N.Y: Cornell University Press. ISBN 0-8014-4240-0.
^ Alving AS, Carson PE, Flanagan CL, Ickes CE (September 1956). "Enzymatic deficiency in primaquine-sensitive erythrocytes" (PDF). Science 124 (3220): 484–5. Bibcode:1956Sci...124..484C. doi:10.1126/science.124.3220.484-a. PMID 13360274.
^ Beutler E (January 2008). "Glucose-6-phosphate dehydrogenase deficiency: a historical perspective". Blood 111 (1): 16–24. doi:10.1182/blood-2007-04-077412. PMID 18156501.

External links [edit]

G6PD Deficiency Association
G6PD Deficiency & Favism Website
The G6PD homepage
The G6PDdb – genetic and structural information database about glucose-6-phosphate dehydrogenase deficiency
A FAQ page on G6PD Deficiency by R&D Diagnostics
Family Practice Notebook/G6PD Deficiency (Favism)
The Most Common Disease You've Never Heard Of, by Randall Amster, The Huffington Post, July 22, 2009.
Rare Anemias Foundation

UpToDate Contents

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1. グルコース-6-リン酸脱水素酵素欠損症の臨床症状 clinical manifestations of glucose 6 phosphate dehydrogenase deficiency
2. グルコース-6-リン酸脱水素酵素欠損症の診断および治療 diagnosis and treatment of glucose 6 phosphate dehydrogenase deficiency
3. 機械的損傷による外因性非免疫性溶血性貧血：断片化溶血および脾機能亢進 extrinsic nonimmune hemolytic anemia due to mechanical damage fragmentation hemolysis and hypersplenism
4. ヘキソースリン酸側路およびグルタチオン代謝疾患（グルコース-6-リン酸脱水素酵素欠損症を除く） disorders of the hexose monophosphate shunt and glutathione metabolism other than glucose 6 phosphate dehydrogenase deficiency

English Journal

Glucose 6-phosphate dehydrogenase deficiency enhances germ cell apoptosis and causes defective embryogenesis in Caenorhabditis elegans.

Yang HC, Chen TL, Wu YH, Cheng KP, Lin YH, Cheng ML, Ho HY, Lo SJ, Chiu DT.Source1] Department of Medical Biotechnology and Laboratory Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan [2] Chang Gung Molecular Medicine Research Center, Chang Gung University, Tao-Yuan, Taiwan.
Cell death & disease.Cell Death Dis.2013 May 2;4:e616. doi: 10.1038/cddis.2013.132.
Glucose 6-phosphate dehydrogenase (G6PD) deficiency, known as favism, is classically manifested by hemolytic anemia in human. More recently, it has been shown that mild G6PD deficiency moderately affects cardiac function, whereas severe G6PD deficiency leads to embryonic lethality in mice. How G6PD
PMID 23640458

Small amplicons high resolution melting analysis (SA-HRMA) allows successful genotyping of acid phosphatase 1 (ACP1) polymorphisms in the Italian population.

Minucci A, Canu G, Gentile L, Zuppi C, Giardina B, Capoluongo E.SourceLaboratory of Clinical Molecular Diagnostics, Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, Italy. angelo.minucci@virgilio.it
Clinica chimica acta; international journal of clinical chemistry.Clin Chim Acta.2013 Feb 1;416:86-91. doi: 10.1016/j.cca.2012.11.023. Epub 2012 Nov 29.
BACKGROUND: The ACP1 gene, encoding a low-molecular-weight phosphotyrosine phosphatase (LMW-PTP), has been suggested as a common genetic factor of several human diseases, including inflammatory and autoimmune diseases, favism and tumors. For this reason, the ACP1 enzyme has been investigated by case
PMID 23201490

Japanese Journal

Glucose-6-Phosphate Dehydrogenase Variants Associated with Favism in Thai Children

LAOSOMBAT Vichai,SATTAYASEVANA Benjamas,CHOTSAMPANCHAROEN Teerachit,WONGCHANCHAILERT Malai
International journal of hematology 83(2), 139-143, 2006-02-15
NAID 10017278884

Haptoglobin therapy for acute favism : a Japanese boy with glucose-6-phosphate dehydrogenase Guadalajara

OHGA S
Br J Haematol. 89, 421-423, 1995
NAID 30035650757

Related Pictures

★リンクテーブル★

リンク元	「ファビズム」「ソラマメ症」「ソラマメ中毒」

「ファビズム」

Glucose-6-phosphate dehydrogenase deficiency
	Classification and external resources
	; Glucose-6-phosphate dehydrogenase
ICD-10	D55.0
ICD-9	282.2
OMIM	305900
DiseasesDB	5037
MedlinePlus	000528
eMedicine	med/900
MeSH	D005955

　　[★]

英: [[]]
同: favism
関: [[]]

同: favism

「ソラマメ症」

　　[★]

英: favism
関: ソラマメ中毒

「ソラマメ中毒」

　　[★]

英: favism
関: ソラマメ症

[Frank-1] Frank JE (October 2005). "Diagnosis and management of G6PD deficiency". Am Fam Physician 72 (7): 1277–82. PMID 16225031.

[2] WHO Working Group (1989). "Glucose-6-phosphate dehydrogenase deficiency.". Bulletin of the World Health Organization 67 (6): 601–11. PMID 2633878.

[3] Al-Ali, AK (1996). "Common G6PD variant from Saudi population and its prevalence" (PDF). Annals of Saudi Medicine 16 (6): 654–6. ISSN 02564947. PMID 17429252. Retrieved May 17, 2009. "This has led to the identification of one genetically determined common variant, 'G6PD Mediterranean.' The overall prevalence rate of this deficiency in these areas was determined to be in excess of 42%. None of the subjects studied displayed any sign of favism"

[4] Luzzatto, L. "GLUCOSE-6-PHOSPHATE DEHYDROGENASE DEFICIENCY." Advanced Medicine-Twelve: Proceedings of a Conference Held at the Royal College of Physicians of London, 11-14 February 1985. Vol. 21. Churchill Livingstone, 1986.

[OHM-5] Warrell, David A.; Timothy M. Cox, John D. Firth, Edward J. Benz (2005). Oxford Textbook of Medicine, Volume Three. Oxford University Press. pp. 720–725. ISBN 0-19-857013-9.

[6] A comprehensive list of drugs and chemicals that are potentially harmful in G6PD deficiency can be found in Beutler E (December 1994). "G6PD deficiency". Blood 84 (11): 3613–36. PMID 7949118. .

[7] Raupp P, Hassan JA, Varughese M, Kristiansson B (2001). "Henna causes life threatening haemolysis in glucose-6-phosphate dehydrogenase deficiency". Arch. Dis. Child. 85 (5): 411–2. doi:10.1136/adc.85.5.411. PMC 1718961. PMID 11668106.

[8] ttp://www.britannica.com/EBchecked/topic/202897/favism

[9] Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson; Aster, Jon (2009-05-28). Robbins and Cotran Pathologic Basis of Disease, Professional Edition: Expert Consult - Online (Robbins Pathology) (Kindle Locations 33351-33354). Elsevier Health. Kindle Edition.

[10] Gaskin RS, Estwick D, Peddi R (2001). "G6PD deficiency: its role in the high prevalence of hypertension and diabetes mellitus". Ethnicity & disease 11 (4): 749–54. PMID 11763298.

[pmid18159462-11] Monga A, Makkar RP, Arora A, Mukhopadhyay S, Gupta AK (July 2003). "Case report: Acute hepatitis E infection with coexistent glucose-6-phosphate dehydrogenase deficiency". Can J Infect Dis 14 (4): 230–1. PMC 2094938. PMID 18159462.

[pmid15621740-12] Hamilton JW, Jones FG, McMullin MF (August 2004). "Glucose-6-phosphate dehydrogenase Guadalajara – a case of chronic non-spherocytic haemolytic anaemia responding to splenectomy and the role of splenectomy in this disorder". Hematology 9 (4): 307–9. doi:10.1080/10245330410001714211. PMID 15621740.

[13] Cappellini MD, Fiorelli G (January 2008). "Glucose-6-phosphate dehydrogenase deficiency". Lancet 371 (9606): 64–74. doi:10.1016/S0140-6736(08)60073-2. PMID 18177777.

[14] G-6-PD FAQ section

[15] Mehta A, Mason PJ, Vulliamy TJ (2000). "Glucose-6-phosphate dehydrogenase deficiency". Baillieres Best Pract. Res. Clin. Haematol. 13 (1): 21–38. PMID 10916676.

[16] thefreedictionary.com > glucose-6-phosphate dehydrogenase deficiency citing: Gale Encyclopedia of Medicine. Copyright 2008

[17] Gabrielle Hatfield, review of Frederick J. Simoons, Plants of Life, Plants of Death, University of Wisconsin Press, 1999. ISBN 0-299-15904-3. In Folklore 111:317–318 (2000). at JSTOR

[18] Rendall, Steven; Riedweg, Christoph (2005). Pythagoras: his life, teaching, and influence. Ithaca, N.Y: Cornell University Press. ISBN 0-8014-4240-0.

[19] Alving AS, Carson PE, Flanagan CL, Ickes CE (September 1956). "Enzymatic deficiency in primaquine-sensitive erythrocytes" (PDF). Science 124 (3220): 484–5. Bibcode:1956Sci...124..484C. doi:10.1126/science.124.3220.484-a. PMID 13360274.

[beutler-20] Beutler E (January 2008). "Glucose-6-phosphate dehydrogenase deficiency: a historical perspective". Blood 111 (1): 16–24. doi:10.1182/blood-2007-04-077412. PMID 18156501.

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favism