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Hemolytic-uremic syndrome (HUS) is a group of blood disorders characterized by low red blood cells, acute kidney failure, and low platelets.[1][3] Initial symptoms typically include bloody diarrhea, fever, vomiting, and weakness.[1][2] Kidney problems and low platelets then occur as the diarrhea is improving.[1] While children are more commonly affected, adults may have worse outcomes.[2] Complications may include neurological problems and heart failure.[1]

Hemolytic-uremic syndrome
Other namesHaemolytic-uraemic syndrome, thrombocytopenia and microangiopathic hemolytic anemia associated with distorted erythrocytes
Schizocyte smear 2009-12-22.JPG
Schistocytes as seen in a person with hemolytic-uremic syndrome
SpecialtyPediatrics, nephrology
SymptomsLow platelets, low red blood cells, and kidney failure following a few days of bloody diarrhea[1]
ComplicationsNeurological problems, heart failure[1]
TypesShiga toxin–producing E. coli HUS (STEC HUS),
S. pneumoniae-associated HUS (SP-HUS),
Atypical hemolytic uremic syndrome (aHUS),
Cobalamin C HUS[1]
CausesInfection by E coli O157:H7, shigella, salmonella[2]
Risk factorsYounger age, female[1]
Diagnostic methodBlood tests, stool tests[3]
Differential diagnosisThrombotic thrombocytopenic purpura (TTP), disseminated intravascular coagulation (DIC), artificial heart valve[4]
TreatmentSupportive care, dialysis, steroids, blood transfusions, plasmapheresis[2][1]
Prognosis<25% long-term kidney problems[1]
Frequency1.5 per 100,000 per year[5]
Deaths<5% risk of death[1]

Most cases occur after infectious diarrhea due to a specific type of E. coli called O157:H7.[2] Other causes include S. pneumoniae, Shigella, Salmonella, and certain medications.[1][2][3] The underlying mechanism typically involves the production of Shiga toxin by the bacteria.[1][2] Atypical hemolytic uremic syndrome (aHUS) is due to a genetic mutation and presents differently.[1][2] Though both cause widespread inflammation and multiple blood clots in small blood vessels, a condition known as thrombotic microangiopathy.[6]

Treatment involves supportive care and may include dialysis, steroids, blood transfusions, or plasmapheresis.[1][2] About 1.5 per 100,000 people are affected per year.[5][1] Less than 5% of those with the condition die.[1] Of the remainder, up to 25% have ongoing kidney problems.[1] HUS was first defined as a syndrome in 1955.[1][7]

Contents

Signs and symptomsEdit

After eating contaminated food, the first symptoms of infection can emerge anywhere from 1 to 10 days later, but usually after 3 to 4 days.[8] These early symptoms can include diarrhea (which is often bloody), stomach cramps, mild fever,[9] or vomiting that results in dehydration and reduced urine.[8] HUS typically develops about 5–10 days after the first symptoms, but can take up to 3 weeks to manifest, and occurs at a time when the diarrhea is improving.[9] Related symptoms and signs include lethargy, decreased urine output, blood in the urine, kidney failure, low platelets, (which are needed for blood clotting), and destruction of red blood cells (microangiopathic hemolytic anemia). High blood pressure, jaundice (a yellow tinge in skin and the whites of the eyes), seizures, and bleeding into the skin can also occur.[9] In some cases, there are prominent neurologic changes.[10][11][12]

People with HUS commonly exhibit the symptoms of thrombotic microangiopathy (TMA), which can include abdominal pain,[13] low platelet count,[14] elevated lactate dehydrogenase LDH, a chemical released from damaged cells, and which is therefore a marker of cellular damage)[15] decreased haptoglobin (indicative of the breakdown of red blood cells)[15] anemia (low red blood cell count), schistocytes (damaged red blood cells),[14][15] elevated creatinine (a protein waste product generated by muscle metabolism and eliminated renally,[16] proteinuria (indicative of kidney injury),[17] confusion,[13] fatigue,[18] swelling,[19] nausea/vomiting,[20] and diarrhea.[21] Additionally, patients with aHUS typically present with an abrupt onset of systemic signs and symptoms such as acute kidney failure,[14] hypertension (high blood pressure),[18] myocardial infarction (heart attack),[22] stroke,[13] lung complications,[22] pancreatitis (inflammation of the pancreas),[20] liver necrosis (death of liver cells or tissue),[14][18] encephalopathy (brain dysfunction),[18] seizure,[23] and coma.[24] Failure of neurologic, cardiac, renal, and gastrointestinal (GI) organs, as well as death, can occur unpredictably at any time, either very quickly or following prolonged symptomatic or asymptomatic disease progression.[5][6][14][17][25]

CauseEdit

Typical HUSEdit

STEC-HUS occurs after ingestion of a strain of bacteria expressing Shiga toxin such as enterohemorrhagic Escherichia coli (EHEC), of which E. coli O157:H7 is the most common serotype.[26]

Atypical HUSEdit

Atypical HUS (aHUS) represents 5–10% of HUS cases[5] and is largely due to one or several genetic mutations that cause chronic, uncontrolled, and excessive activation of complement.[5] This results in platelet activation endothelial cell damage, and white blood cell activation, leading to systemic TMA, which manifests as decreased platelet count, hemolysis (breakdown of red blood cells), damage to multiple organs, and ultimately death.[6][17][27] Early signs of systemic complement-mediated TMA include thrombocytopenia (platelet count below 150,000 or a decrease from baseline of at least 25%)[15] and evidence of microangiopathic hemolysis, which is characterized by elevated LDH levels, decreased haptoglobin, decreased hemoglobin (the oxygen-containing component of blood), and/or the presence of schistocytes.[6][28][15] Despite the use of supportive care, an estimated 33–40% of patients will die or have end-stage renal disease (ESRD) with the first clinical manifestation of aHUS,[21][22] and 65% of patients will die, require dialysis, or have permanent renal damage within the first year after diagnosis despite plasma exchange or plasma infusion (PE/PI) therapy.[21] Patients who survive the presenting signs and symptoms of aHUS endure a chronic thrombotic and inflammatory state, which puts them at lifelong elevated risk of sudden blood clotting, kidney failure, other severe complications and premature death.[28][19]

Historically, treatment options for aHUS were limited to plasma exchange or plasma infusion (PE/PI) therapy, which carries significant risks[29][30] and has not been proven effective in any controlled trials. People with aHUS and ESRD have also had to undergo lifelong dialysis, which has a 5-year survival rate of 34–38%.[31][32]

PathogenesisEdit

HUS is one of the thrombotic microangiopathies, a category of disorders that includes STEC-HUS, aHUS, and thrombotic thrombocytopenic purpura (TTP). STEC-HUS occurs after ingestion of a strain of bacteria expressing Shiga toxin(s), usually types of E. coli, that expresses verotoxin (also called Shiga-like toxin). E. coli can produce stx1 and/or stx2 Shiga toxins, the latter being more dangerous. A combination of both toxins in certain ratios is usually associated with HUS. These Shiga toxins bind GB3 receptors, globotriaosylceramide, which are present in renal tissue more than any other tissue and are also found in central nervous system neurons and other tissue. Children have more GB3 receptors than adults which may be why children are more susceptible to HUS. Cattle, swine, deer, and other mammals do not have GB3 receptors, but can be asymptomatic carriers of Shiga toxin-producing bacteria. Some humans can also be asymptomatic carriers. Once the bacteria colonizes, diarrhea followed by bloody diarrhea, hemorrhagic colitis, typically follows. STEC-HUS is usually preceded by a prodrome of diarrhea, which is often bloody, and is caused by Shiga-like toxin-producing bacteria such as enterohemorrhagic Escherichia coli (EHEC), of which E. coli O157:H7 is the most common serotype.[26] Other serotypes also cause disease and can emerge as new causes of STEC-HUS, as occurred with E. coli O104:H4, which triggered a 2011 epidemic of STEC-HUS in Germany.[33]

The typical pathophysiology of HUS involves the binding of Shiga-toxin to the globotriaosylceramide (Gb3; also called ceramide trihexoside which accumulates in Fabry disease) receptor on the surface of the glomerular endothelium.[34] This action includes a cascade of signaling events leading to apoptosis and binding of leukocytes to endothelial cells. The Shiga-toxin-activated endothelial cells then become thrombogenic (clot-producing) by a mechanism that is not fully understood,[35] though they have been shown to induce the release of cytokines and chemokines that are implicated in platelet activation.[36] Additionally, the binding action of Shiga-toxin inactivates a metalloproteinase called ADAMTS13, the deficiency of which causes the closely related TTP. Once ADAMTS13 is disabled, multimers of von Willebrand Factor (vWF) form and initiate platelet activation, causing microthrombus formation. The activation of platelets resulting from inhibition of ADAMTS13 is due to the hyperactivity of large multimers of uncleaved vWF. The arterioles and capillaries of the body become obstructed by the resulting complexes of activated platelets, which have adhered to the endothelium via large multimeric vWF. Through a mechanism known as microangiopathic hemolysis, the growing thrombi lodged in smaller vessels destroy red blood cells (RBCs) as they squeeze through the narrowed blood vessels, forming schistocytes, or fragments of sheared RBCs.[27] The presence of schistocytes is a key finding that helps to diagnose HUS. Typically, this hemolysis results in a hemoglobin level of less than 80 g/L.

Shiga-toxin directly activates the alternative complement pathway and also interferes with complement regulation by binding to complement factor H, an inhibitor of the complement cascade. Shiga-toxin causes complement-mediated platelet, leukocyte, and endothelial cell activation, resulting in systemic hemolysis, inflammation and thrombosis.[37][38][39] Severe clinical complications of TMA have been reported in patients from 2 weeks to more than 44 days after presentation with STEC-HUS, with improvements in clinical condition extending beyond this time frame, suggesting that complement activation persists beyond the acute clinical presentation and for at least 4 months.[40]

The consumption of platelets as they adhere to the thrombi lodged in the small vessels typically leads to mild or moderate thrombocytopenia with a platelet count of less than 60,000 per microliter.[41] As in the related condition TTP, reduced blood flow through the narrowed blood vessels of the microvasculature leads to reduced blood flow to vital organs, and ischemia may develop.[10] The kidneys and the central nervous system (brain and spinal cord) are the parts of the body most critically dependent on high blood flow, and are thus the most likely organs to be affected. However, in comparison to TTP, the kidneys tend to be more severely affected in HUS, and the central nervous system is less commonly affected.[42]

In contrast with typical disseminated intravascular coagulation seen with other causes of sepsis and occasionally with advanced cancer, coagulation factors are not consumed in HUS (or TTP) and the coagulation screen, fibrinogen level, and assays for fibrin degradation products such as "D-Dimers", are generally normal despite the low platelet count (thrombocytopenia).[42]

HUS occurs after 3–7% of all sporadic E. coli O157:H7 infections and up to approximately 20% or more of epidemic infections.[43] Children and adolescents are commonly affected.[44] Grossly, the kidneys may show patchy or diffuse renal cortical necrosis. Histologically, the glomeruli show thickened and sometimes split capillary walls due largely to endothelial swelling. Large deposits of fibrin-related materials in the capillary lumens, subendothelially, and in the mesangium are also found along with mesangiolysis. Interlobular and afferent arterioles show fibrinoid necrosis and intimal hyperplasia and are often occluded by thrombi.[11]

STEC-HUS most often affects infants and young children, but also occurs in adults. The most common form of transmission is ingestion of undercooked meat, unpasteurized fruits and juices, contaminated produce, contact with unchlorinated water, and person-to-person transmission in daycare or long-term care facilities.[24]

Unlike typical HUS, aHUS does not follow STEC infection and is thought to result from one or several genetic mutations that cause chronic, uncontrolled, and excessive activation of complement.[5] This leads to platelet activation, endothelial cell damage, and white blood cell activation, leading to systemic TMA, which manifests as decreased platelet count, hemolysis, damage to multiple organs, and ultimately, death.[6][17][27] Early signs of systemic complement-mediated TMA include thrombocytopenia (platelet count below 150,000 or a decrease from baseline of at least 25%)[15] and evidence of microangiopathic hemolysis, which is characterized by elevated LDH levels, decreased haptoglobin, decreased hemoglobin, and/or the presence of schistocytes.[6][28][15]

DiagnosisEdit

The similarities between HUS, aHUS, and TTP make differential diagnosis essential.[6][28] All three of these systemic TMA-causing diseases are characterized by thrombocytopenia[15] and microangiopathic hemolysis,[5][15] plus one or more of the following: neurological symptoms (e.g., confusion,[5][23] cerebral convulsions,[23] seizures[20]); renal impairment[15] (e.g., elevated creatinine,[16] decreased estimated glomerular filtration rate [eGFR],[16] abnormal urinalysis[45]); and gastrointestinal (GI) symptoms (e.g., diarrhea,[18][21] nausea/vomiting,[20] abdominal pain,[20] gastroenteritis[15][18]).The presence of diarrhea does not exclude aHUS as the cause of TMA, as 28% of patients with aHUS present with diarrhea and/or gastroenteritis.[17][18] First diagnosis of aHUS is often made in the context of an initial, complement-triggering infection, and Shiga-toxin has also been implicated as a trigger that identifies patients with aHUS.[40] Additionally, in one study, mutations of genes encoding several complement regulatory proteins were detected in 8 of 36 (22%) patients diagnosed with STEC-HUS.[46] However, the absence of an identified complement regulatory gene mutation does not preclude aHUS as the cause of the TMA, as approximately 50% of patients with aHUS lack an identifiable mutation in complement regulatory genes.[18]

Diagnostic work-up supports the differential diagnosis of TMA-causing diseases. A positive Shiga-toxin/EHEC test confirms a cause for STEC-HUS,[24][26] and severe ADAMTS13 deficiency (i.e., ≤5% of normal ADAMTS13 levels) confirms a diagnosis of TTP.[47]

PreventionEdit

The effect of antibiotics in shiga toxin producing E. coli is unclear.[1] While some early studies raised concerns more recent studies show either no effect or a benefit.[1]

TreatmentEdit

Treatment involves supportive care and may include dialysis, steroids, blood transfusions, and plasmapheresis.[1][2]

While eculizumab is being used to treat atypical hemolytic uremic syndrome, no evidence as of 2018 supports its use in the main forms of HUS.[1] Scientists are trying to understand how useful it would be to immunize humans or cattles.[48]

PrognosisEdit

Acute renal failure occurs in 55–70% of people with STEC-HUS, although up to 70–85% recover renal function.[49] Patients with aHUS generally have poor outcomes, with up to 50% progressing to ESRD or irreversible brain damage; as many as 25% die during the acute phase.[49] However, with aggressive treatment, more than 90% of patients survive the acute phase of HUS, and only about 9% may develop ESRD. Roughly one-third of persons with HUS have abnormal kidney function many years later, and a few require long-term dialysis. Another 8% of persons with HUS have other lifelong complications, such as high blood pressure, seizures, blindness, paralysis, and the effects of having part of their colon removed. The overall mortality rate from HUS is 5–15%. Children and the elderly have a worse prognosis.[50]

EpidemiologyEdit

The country with the highest incidence of HUS is Argentina[51][52][53][54] and it performs a key role in the research of this condition.

In the United States, the overall incidence of HUS is estimated at 2.1 cases per 100,000 persons/year, with a peak incidence between six months and four years of age.[55]

HUS and the E. coli infections that cause it have been the source of much negative publicity for the FDA, meat industries, and fast-food restaurants since the 1990s, especially in the contaminations linked to Jack in the Box restaurants. In 2006, an epidemic of harmful E. coli emerged in the United States due to contaminated spinach. In June, 2009, Nestle Toll House cookie dough was linked to an outbreak of E. coli O157:H7 in the United States, which sickened 70 people in 30 states.[55]

In May, 2011 an epidemic of bloody diarrhea caused by E. coli O104:H4-contaminated fenugreek seeds hit Germany. Tracing the epidemic revealed more than 3,800 cases, with HUS developing in more than 800 of the cases, including 36 fatal cases. Nearly 90% of the HUS cases were in adults.[56][57]

ReferencesEdit

  1. ^ a b c d e f g h i j k l m n o p q r s t u v w Cody, EM; Dixon, BP (February 2019). "Hemolytic Uremic Syndrome". Pediatric Clinics of North America. 66 (1): 235–246. doi:10.1016/j.pcl.2018.09.011. PMID 30454746.
  2. ^ a b c d e f g h i j "Hemolytic uremic syndrome". Genetic and Rare Diseases Information Center (GARD). Retrieved 21 November 2018.
  3. ^ a b c Salvadori, M; Bertoni, E (6 August 2013). "Update on hemolytic uremic syndrome: Diagnostic and therapeutic recommendations". World Journal of Nephrology. 2 (3): 56–76. doi:10.5527/wjn.v2.i3.56. PMC 3832913. PMID 24255888.
  4. ^ Ferri, Fred F. (2010). Ferri's Differential Diagnosis E-Book: A Practical Guide to the Differential Diagnosis of Symptoms, Signs, and Clinical Disorders. Elsevier Health Sciences. p. 219. ISBN 978-0323081634.
  5. ^ a b c d e f g h Noris, M; Remuzzi, G (2009). "Atypical hemolytic-uremic syndrome". N Engl J Med. 361 (17): 1676–1687. doi:10.1056/NEJMra0902814. PMID 19846853.
  6. ^ a b c d e f g Benz, K; Amann, K (2010). "Thrombotic microangiopathy: new insights". Current Opinion in Nephrology and Hypertension. 19 (3): 242–247. doi:10.1097/MNH.0b013e3283378f25. PMID 20186056.
  7. ^ Gasser C, Gautier E, Steck A, Siebenmann RE, Oechslin R (September 1955). "Hemolytic-uremic syndrome: bilateral necrosis of the renal cortex in acute acquired hemolytic anemia". Schweiz Med Wochenschr (in German). 85 (38–39): 905–9. PMID 13274004.
  8. ^ a b "E.coli (Escherichia coli): Symptoms". Centers for Disease Control and Prevention. U.S. Department of Health & Human Services. 2017-11-30. Retrieved 22 November 2018.
  9. ^ a b c "Hemolytic uremic syndrome (HUS)". Center for Acute Disease Epidemiology. Iowa Department of Public Health. Retrieved 21 November 2018.
  10. ^ a b Boyer, O; Niaudet, P (August 2011). "Hemolytic Uremic Syndrome: New Developments in Pathogenesis and Treatments". Int J Nephrol. 2011: 908407. doi:10.4061/2011/908407. PMC 3159990. PMID 21876803.
  11. ^ a b Kumar, V; Cotran, RS; Robbins, SL, eds. (2002). Robbins Basic Pathology. Philadelphia, PA: Saunders. ISBN 978-0721692746.
  12. ^ Nathanson, S.; Kwon, T.; Elmaleh, M.; et al. (2010). "Acute neurological involvement in diarrhea-associated hemolytic uremic syndrome". Clin J Am Soc Nephrol. 5 (7): 1218–1228. doi:10.2215/CJN.08921209. PMC 2893076. PMID 20498239.
  13. ^ a b c Ohanian, M; Cable, C; Halka, K (2011). "Eculizumab safely reverses neurologic impairment and eliminates the need for dialysis in severe atypical hemolytic uremic syndrome". Clin Pharmacol. 3: 5–12. doi:10.2147/CPAA.S17904. PMC 3262387. PMID 22287852.
  14. ^ a b c d e Loirat, C; Noris, M; Fremaux-Bacchi, V (2008). "Complement and the atypical hemolytic uremia syndrome in children". Pediatr Nephrol. 23 (11): 1957–1972. doi:10.1007/s00467-008-0872-4. PMID 18594873.
  15. ^ a b c d e f g h i j k Caprioli, J.; Noris, M.; Brioschi, S.; et al. (2006). "Genetics of HUS: the impact of MCP, CFH, and IF mutations on clinical presentation, response to treatment, and outcome". Blood. 108 (4): 1267–1279. doi:10.1182/blood-2005-10-007252. PMC 1895874. PMID 16621965.
  16. ^ a b c Ariceta, Gema; Besbas, Nesrin; Johnson, Sally; et al. (2009). "Guideline for the investigation and initial therapy of diarrhea-negative hemolytic uremic syndrome". Pediatr Nephrol. 24 (4): 687–696. doi:10.1007/s00467-008-0964-1. PMID 18800230.
  17. ^ a b c d e Sellier-Leclers, A.-L.; Fremeaux-Bacchi, V.; Dragon-Durey, M.-A.; et al. (2007). "Differential impact of complement mutations on clinical characteristics in atypical hemolytic uremic syndrome". J Am Soc Nephrol. 18 (8): 2392–2400. doi:10.1681/ASN.2006080811. PMID 17599974.
  18. ^ a b c d e f g h Noris, M.; Caprioli, J.; Bresin, E.; et al. (2010). "Relative role of genetic complement abnormalities in infrequent and familial aHUS and their impact on clinical phemotype". Clin J Am Soc Nephrol. 5 (10): 1844–1859. doi:10.2215/CJN.02210310. PMC 2974386. PMID 20595690.
  19. ^ a b Ståhl, A.-L.; Vazir-Sani, F.; Heinen, S.; et al. (2008). "Factor H dysfunction in patients with atypical hemolytic uremic syndrome contributes to complement deposition on platelets and their activation". Blood. 111 (11): 5307–5317. doi:10.1182/blood-2007-08-106153. PMID 18268093.
  20. ^ a b c d e Dragon-Durey, M.-A.; Sethi, S. K.; Bagga, A.; et al. (2010). "Clinical features of anti-factor H autoantibody-associated hemolytic uremic syndrome". J Am Soc Nephrol. 21 (12): 2180–2187. doi:10.1681/ASN.2010030315. PMC 3014031. PMID 21051740.
  21. ^ a b c d Zuber, J; Le Quintrec, M; Sberro-Scussan, R; Loirat, C; Fremaux-Bacchi, V; Legendre, C (2011). "New insights into postrenal transplant hemolytic uremic syndrome". Nature Reviews Nephrology. 7 (1): 23–35. doi:10.1038/nrneph.2010.155. PMID 21102542.
  22. ^ a b c Sallee, M; et al. (2010). "Myocardial infarction is a complication of factor H-associated atypical HUS". Nephrol Dial Transplant. 25 (6): 2028–2032. doi:10.1093/ndt/gfq160. PMID 20305136.
  23. ^ a b c Neuhaus, TJ; Calonder, S; Leumann, EP (1997). "Heterogeneity of atypical haemolytic uraemis syndromes". Arch Dis Child. 76 (6): 518–521. doi:10.1136/adc.76.6.518. PMC 1717216. PMID 9245850.
  24. ^ a b c Noris, M; Remuzzi, G (2005). "Hemolytic uremic syndrome". J Am Soc Nephrol. 16 (4): 1035–1050. doi:10.1681/ASN.2004100861. PMID 15728781.
  25. ^ Mache, CJ; et al. (2009). "Complement inhibitor eculizumab in atypical hemolytic uremic syndrome". Clin J Am Soc Nephrol. 4 (8): 1312–1316. doi:10.2215/CJN.01090209. PMC 2723971. PMID 19556379.
  26. ^ a b c Palermo, MS; Exeni, RA; Fernandez, GC (2009). "Hemolytic Uremic Syndrome: pathogenesis and update of interventions". Expert Rev Anti Infect Ther. 7 (6): 697–707. doi:10.1586/eri.09.49. PMID 19681698.
  27. ^ a b c Tsai, H-M (2010). "Pathophysiology of thrombotic thrombocytopenic purpura". Int J Hematol. 91 (1): 1–19. doi:10.1007/s12185-009-0476-1. PMC 3159000. PMID 20058209.
  28. ^ a b c d Zipfel, PF; Heinen, S; Skerka, C (2010). "Thrombotic microangiopathies: new insights and new challenges". Current Opinion in Nephrology and Hypertension. 19 (4): 372–378. doi:10.1097/MNH.0b013e32833aff4a. PMID 20539230.
  29. ^ George, JN (2010). "How I treat my patients with thrombotic thrombocytopenic purpura". Blood. 116 (20): 4060–4069. doi:10.1182/blood-2010-07-271445. PMID 20686117.
  30. ^ Michon, B; et al. (2007). "Complications of apheresis in children". Transfusion. 47 (10): 1837–1842. doi:10.1111/j.1537-2995.2007.01405.x. PMID 17880609.
  31. ^ Collins, Allan J.; et al. (2010). "Excerpts from the US Renal Data System 2009 Annual Data Report". Am J Kidney Dis. 55 (1 Suppl 1): S1–S7. doi:10.1053/j.ajkd.2009.10.009. PMC 2829836. PMID 20082919.
  32. ^ European Renal Association- European Dialysis and Transplant Association Registry (2011). ERA-EDTA Registry Annual Report 2009. Amsterdam, The Netherlands: Academic Medical Center Department of Medical Informatics.
  33. ^ Robert Koch Institute. "Technical Report: EHEC/HUS O104:H4 Outbreak, Germany, May/June 2011" (PDF). Berlin, Germany: Robert Koch Institute. Archived from the original (PDF) on 2016-04-08.
  34. ^ Psotka, MA; et al. (2009). "Shiga toxin 2 targets the murine renal collecting duct epithelium". Infect Immun. 77 (3): 959–969. doi:10.1128/IAI.00679-08. PMC 2643625. PMID 19124603.
  35. ^ Zoja, C; Buelli, S; Morigi, M (2010). "Shoga toxin-associated hemolytic uremic syndrome: pathophysiology of endothelial dysfunction". Pediatr Nephrol. 25 (11): 2231–2240. doi:10.1007/s00467-010-1522-1. PMID 20424866.
  36. ^ Guessous, F; et al. (2005). "Shiga toxin 2 and lipopolysaccharide induce human microvascular endothelial cells to release chemokines and factor that stimulate platelet function". Infect Immun. 73 (12): 8306–8316. doi:10.1128/IAI.73.12.8306-8316.2005. PMC 1307066. PMID 16299328.
  37. ^ Orth D, Würzner R (September 2010). "Complement in typical hemolytic uremic syndrome". Seminars in Thrombosis and Hemostasis. 36 (6): 620–4. doi:10.1055/s-0030-1262883. PMID 20865638.
  38. ^ Stahl, AL; Startz, L; Karpman, D (2011). "Complement activation on platelet-leukocyte complexes and microparticles in enterohemorrhagic Escherichia coli-induced hemolytic uremic syndrome". Blood. 117 (20): 5503–5513. doi:10.1182/blood-2010-09-309161. PMID 21447825.
  39. ^ Thurman, J.M.; et al. (2009). "Alternative pathway of complement in children with diarrhea-associated hemolytic uremic syndrome". Clin J Am Soc Nephrol. 4 (12): 1920–1924. doi:10.2215/CJN.02730409. PMC 2798880. PMID 19820137.
  40. ^ a b Mache, C; et al. (June 2010). "Eculizumab in diarrhea-associated hemolytic uremic syndrome". Presented at the 2nd International Conference on HUS-MPGN-PNH.
  41. ^ Tan, AJ (2017-12-27). "Hemolytic uremic syndrome in emergency medicine". Medscape EMedicine.
  42. ^ a b Kanso, AA; Abou Hassan, NM; Badr, KF (2008). "Micro and macrovascular disease of the kidney". In: Brenner BM, Ed. The Kidney, 8th Edition: chapter 32.
  43. ^ Mead, PS; Griffin, PM (1998). "Escherichia coli O157:H7". Lancet. 352 (9135): 1207–1212. doi:10.1016/S0140-6736(98)01267-7. PMID 9777854.
  44. ^ Ruggenenti, P; Noris, M; Remuzzi, G (2001). "Thrombotic microangiopathy, hemolytic uremic syndrome, and thrombotic thrombocytopenic purpura". Kidney Int. 60 (3): 831–846. doi:10.1046/j.1523-1755.2001.060003831.x. PMID 11532079.
  45. ^ Al-Akash, AI; Almond, PS; Savell, VH Jr; Gharaybeth, SI; Hogue, C (2011). "Eculizumab includes long-term remission in recurrent post-transpant HUS associated with C3 gene mutation". Pediatr Nephrol. 26 (4): 613–619. doi:10.1007/s00467-010-1708-6. PMID 21125405.
  46. ^ Gangnadoux, MF; Habib, R; Gubler, MC; Bacri, JL; Broyer, M (1996). "Long-term (15-25 years) outcome of childhood hemolytic-uremic syndrome". Clin Nephrol. 46 (1): 39–41. PMID 8832149.
  47. ^ Zhen, XL; et al. (2010). "Multiple domains of ADAMTS13 are targeted by autoantibodies against ADAMTS13 in patients with acquired idiopathic thrombotic thrombocytopenic purpura". Haematologica. 95 (9): 1555–1562. doi:10.3324/haematol.2009.019299. PMC 2930958. PMID 20378566.
  48. ^ O'Ryan, M; Vidal, R; Del Canto, F; Salazar, J C; Montero, D (2015). "Vaccines for viral and bacterial pathogens causing acute gastroenteritis: Part II: Vaccines for Shigella, Salmonella, enterotoxigenic E. coli (ETEC) enterohemorragic E. coli (EHEC) and Campylobacter jejuni". Human Vaccines & Immunotherapeutics. 11 (3): 601–619. doi:10.1080/21645515.2015.1011578. PMC 4514228. PMID 25715096.
  49. ^ a b Parmar, MS (2010). "Hemolytic-uremic syndrome". Medscape EMedicine.
  50. ^ Chu, P; Hemphill, RR (2004). "222: Acquired hemolytic anemia". Emergency Medicine: A Comprehensive Study Guide (6th ed.). New York, NY: McGraw-Hill. ISBN 978-0-07-138875-7.
  51. ^ Rivero, MA; Passucci, JA; Rodriguez, EM; Signorini, ML; Tarabla, HD; Parma, AE (2011). "Factors associated with sporadic verotoxigenic Escherichia coli infection in children with diarrhea from the Central Eastern Area of Argentina". Foodborne Pathogens and Disease. 8 (8): 901–6. doi:10.1089/fpd.2010.0800. PMID 21492023.
  52. ^ Rivas, M; Caletti, MG; Chinen, I; Refi, SM; Roldán, CD; Chillemi, G; Fiorilli, G; Bertolotti, A; Aguerre, L; Sosa Estani, S (2003). "Home-prepared hamburger and sporadic hemolytic uremic syndrome, Argentina". Emerging Infectious Diseases. 9 (9): 1184–6. doi:10.3201/eid0909.020563. PMC 3016759. PMID 14531383.
  53. ^ Rivero, MA; Padola, NL; Etcheverría, AI; Parma, AE (2004). "Enterohemorrhagic Escherichia coli and hemolytic-uremic syndrome in Argentina". Medicina. 64 (4): 352–6. PMID 15338982.
  54. ^ "What is HUS?" (PDF).
  55. ^ a b Corrigan JJ, Boineau FG (November 2001). "Hemolytic-uremic syndrome". Pediatr Rev. 22 (11): 365–9. doi:10.1542/pir.22-11-365. PMID 11691946.
  56. ^ Buchholz, U; et al. (2011). "German outbreak of escherichia coli O104:H4 associated with sprouts". N Engl J Med. 365 (19): 1763–1770. doi:10.1056/NEJMoa1106482. PMID 22029753.
  57. ^ Frank, C; et al. (2011). "Epidemic profile of Shiga-toxin-producing Escherichia coli O104:H4 outbreak in Germany". N Engl J Med. 365 (19): 1711–1780. doi:10.1056/NEJMoa1106483. PMID 21696328.

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