Jump to content

Paroxysmal cold hemoglobinuria

From Wikipedia, the free encyclopedia
Paroxysmal cold hemoglobinuria
Other namesDonath-Landsteiner syndrome
SpecialtyHematology

Paroxysmal cold hemoglobinuria (PCH) or Donath–Landsteiner hemolytic anemia (DLHA) is an autoimmune hemolytic anemia featured by complement-mediated intravascular hemolysis after cold exposure.[1] It can present as an acute non-recurrent postinfectious event in children, or chronic relapsing episodes in adults with hematological malignancies or tertiary syphilis. Described by Julius Donath (1870–1950) and Karl Landsteiner (1868–1943) in 1904, PCH is one of the first clinical entities recognized as an autoimmune disorder.[2]

Paroxysmal cold hemoglobinuria is a result of cold-reacting antibod immunoglobulin (Ig) induced hemolytic response inside vessels leading to anemia[3] and, thus, a cold antibody autoimmune hemolytic anemias (CAAHA).[3]

In most patients with DLHA, the antibody selectively targets against the red blood cells on-surface antigen called the antigen P or antigen I, respectively.[3] Most cases were found to be owing to polyclonal IgG. Nonetheless, IgM-induced DLHA has already also been described in the past.[3][4][5][6] For example, there was a case study reporting that autoimmune hemolytic anemia where an IgA Donath–Landsteiner denoted as [D-L] antibody appeared to cause Donath–Landsteiner cold hemoglobinuria.[7] The most notable difference between DLHA and CAD (cold agglutinin disease) is the causative agent. For cold agglutinin disease, the causative agent is constantly owing to a cold-active IgM antibody.[3]

Signs and symptoms

[edit]

Pediatric patients usually present with acute onset of hemolytic anemia with fatigue, exercise intolerance, pallor, jaundice, and hemoglobinuria, preceded by exposure to cold temperature and preceding viral-like illness. This may be complicated by acute renal failure due to nephrotoxic free hemoglobin and tubular obstruction.[8] Although the disease may be fulminant during onset, the acute form generally follows a transient, self-limiting course.[9][10]

Chronic relapsing PCH manifests as episodic hemoglobinuria and anemic symptoms, usually milder than the acute form.[1] While the classical syphilitic PCH becomes infrequent, paraneoplastic cause with underlying hematological malignancies especially in the elderly should be considered. Hepatosplenomegaly and adenomegaly are not pertinent to PCH, unless associated with underlying lymphoproliferative disorders. This form remains refractory if the underlying condition is not treated.[citation needed]

Signs and symptoms of DHLA is tied to an abrupt onset of hemoglobinuria subsequent to cold exposure.[3]

Exact signs and symptoms of DLHA are anemia-alike[3] (dyspnea, palpitations, fatigue, pallor and hemolysis-alike[3] (jaundice, dark urine and pain).

Some signs and symptoms indicate a medical emergency and that the patients with DLHA require to be hospitalized:[11]

Cause

[edit]

Infectious agents are implicated in the acute form of PCH. Viral agents include measles, mumps, Epstein-Barr virus, cytomegalovirus, varicella-zoster virus, influenza virus, and adenovirus. Non-viral agents include Mycoplasma pneumoniae and Haemophilus influenzae. Chronic relapsing PCH is classically associated with syphilis, as well as hematological malignancies including non-Hodgkin lymphoma and myeloproliferative neoplasms.[1]

DLHA can be either primary or secondary. Patients with emergent manifestation are likely deemed primary. The absolute causative agent is seldom identified.[3]

Acute Donath–Landsteiner hemolytic anemia is linked to viral infections such as:[3]

Pathogens of bacterial infections that are linked to acute DLHA

In addition to the commonly-seen causes mentioned above, oncologic reasons may also establish. DLHA has been rarely weighted in by non-Hodgkin lymphoma,[13][14] as well as oat cell carcinoma.[15]

Pathophysiology

[edit]

The exact pathogenesis is not fully elucidated. The hallmark feature is the formation of polyclonal IgG autoantibody against the P antigen, which is a polysaccharide surface antigen on red blood cells in most humans. As a weak, biphasic antibody, it adsorbs on to the P antigen in the cold temperature as in the peripheral circulation in the body in the primary phase, and fixes initial components (up to C2) of the classical complement pathway. Upon recirculation to the core temperature of 37°C in the secondary phase, Anti-P autoantibody dissociates itself from the red blood cell, however, complement components remain bound and rest of the classic complement cascade proceeds till the formation of membrane attack complex (MAC) that disrupts red cell membrane resulting in intravascular hemolysis.[16]

The causative agent of DLHA is a cold-active immunoglobulin commonly denoted as the D–L autoantibody which demonstrates bi-phasic hemolysin capability of causing serious hemolysis even when the titer detection is low, which is because of its capacity to detach itself from the lysed RBCs and consequently bind intact erythrocytes according to the temperature changes.[17]

D-L antibodies are most commonly targeted against P antigens than I antigens and others expressed on the RBC membrane.[6]

The D-L hold on tightly to RBC surfaces during the peripheral circulation systems such as human extremities, where temperatures are likely cooler than 30 °C (86 °F) in comparison to core body temperature.[6]

After successful attachment to RBC surfaces, the D–L then activates the complement cascade, leading to RBC membrane perforation (i.e., intra-vascular hemolysis phenomenon).[6] Complement activation and consequent hemolysis would become reality if and only if binding-RBCs has travelled to the core part of the body at a warmer temperature around 37 °C (99 °F).[17]

Because of the reasons given above, the results of the direct antiglobulin test (DAT) with anti-C3 are highly likely to be positive while to be negative for anti-IgG or anti-IgM, only when the DAT is being performed at 4 °C (39 °F) approximately and then incubated at around 37 °C (99 °F).[12]

Diagnosis

[edit]

Hemoglobinuria is not necessary for diagnosis because hemoglobinuria is sometimes absent in the case. Additionally, a history of exposure to cold temperatures is not always attained.[3] Given the fact that hemoglobinuria as well as a personal history of exposure to cold temperatures are not always present, the diagnosis heavily relies on laboratory testing.[3]

Laboratory investigations

[edit]

The purposes of laboratory investigations are to:

  1. Confirm the presence of intravascular hemolysis in terms of metabolic products of red cells and hematopoietic response.[1]
  2. Establish the diagnosis of autoimmune hemolytic anemia and differentiate from other AIHA.[18][10][19]
  3. Identify other supporting features as in hematopathological findings.[16]

For intravascular hemolysis, the laboratory parameters include increased serum free hemoglobin, lactate dehydrogenase, unconjugated bilirubin, and reduced haptoglobin. Urine tests may show elevated hemoglobinuria and hemosiderinuria in chronic cases. Reticulocytosis may not be apparent in the acute phase or when there is viral-induced myelosuppression.[1]

Once the clinical suspicion of autoimmune hemolytic anemia is made, direct antiglobulin test (DAT) or direct Coombs' test is the first line of investigation to confirm the presence of warm autoantibodies.[20] Testing with polyspecific and IgG-specific antiglobulin agents is usually negative, and that with C3-specific agent may be positive. On excluding warm autoimmune hemolytic anemia (WAIHA), the cold agglutinin titer should be examined for cold agglutinin disease (CAD). The diagnosis of PCH is suspected when both WAIHA and CAD are excluded. The complement level is usually low.[citation needed]

Donath-Landsteiner test is the confirmatory test for PCH.[16] It involves the cooling of the patient's serum to 4°C to allow the absorption of anti-P autoantibodies to the red cells, followed by warming to 37°C to activate complement fixation and hemolysis. Indirect DL test with addition of ABO-compatible P antigen-positive blood can be performed in case the direct DL test is negative, since the complement in the original serum may be consumed and result in false negative.[1]

The laboratory tests comprise complete blood count and peripheral blood smear.[3] The hematopathological findings can reflect both the presence of intravascular hemolysis and the underlying immunological process.[1][16] The complete blood count usually shows normocytic anemia. Reticulocytosis may be subtle in the acute phase. Peripheral blood smear may show corresponding polychromasia. Neutrophil erythrophagocytosis is suggestive of PCH, while the absence of red cell agglutination as in CAD or microspherocytosis in WAIHA should also be noted. The laboratory test results will reveal evaluations like anisocytosis, nucleated red blood cells, poikilocytosis, polychromasia, spherocytosis, and erythrophagocytosis by neutrophils.[21][22]

Blood typing is supposed to be performed with every patient even if their anemia is mild since the hemoglobin can fall all of a sudden and require prompt blood transfusion.[3]

Anti-immunoglobulin G (anti-Ig) often disassociates itself from the surface of red blood cells under warm degrees of temperatures.[3] Thus, the direct antiglobulin test for anti-immunoglobulin G often manifests a negative results.[3] That's why it's important to note that the indirect antiglobulin test must be carried out in an environment at cold temperatures.[3] According to Medscape, the so-called Donath–Landsteiner bithermic hemolytic test is an assay of hemolysis where the serum of the patient goes incubated with normal complement and red blood cells under 0 °C (32 °F) to 4 °C (39 °F) to permit the components in the initial stage of complement to be settled.[3] Afterwards, the specimen goes incubated under 37 °C (99 °F) so that the later components of complement can then be enabled.[3] The membrane attack complex leads the red blood cells to undergo lysis.[3]

Blood chemistry, serology, urinalysis and suchlike may also be performed. For patients of DLHA who perform the serologic testing, summaries for syphilis, mycoplasmal infection, or viruses such as, adenovirus, cytomegalovirus, Epstein–Barr virus, influenza A, measles, mumps, and varicella might be shown positive.[3] It's up to the underlying pathological conditions.[3]

Classification

[edit]

AIHA can be classified as warm autoimmune hemolytic anemia or cold autoimmune hemolytic anemia, which includes cold agglutinin disease and paroxysmal cold hemoglobinuria. These classifications are based on the characteristics of the autoantibodies involved in the pathogenesis of the disease. Each has a different underlying cause, management, and prognosis, making classification important when treating a patient with AIHA.[23]

Autoimmune hemolytic anemia:

  • Primary cold agglutinin disease
  • Secondary cold agglutinin syndrome
  • Paroxysmal cold hemoglobinuria[24]: 259 
  • Idiopathic
  • Secondary
  • Acute, transient (Infections other than syphilis)[24]: 259 
  • Chronic (syphilis)[24]: 259 
  • Drug-induced immune hemolytic anemia[24]: 259 
  • Autoimmune type
  • Drug absorption type
  • Neoantigen type[26]

Management

[edit]

Acute PCH is usually transient and self-limiting.[9] Supportive treatment includes rest, normothermia and transfusion when indicated.[1][27] Intensive care for the development of acute kidney injury should be offered. Plasmapheresis is proposed to be an adjunctive measure to facilitate recovery.[28] Steroids and other immunosuppressants are sometimes administered and the beneficial effect is uncertain. Immunotherapy is considered in refractory to corticosteroids and immunosuppression. Monoclonal antibodies e.g. rituximab (anti-CD20) and eculizumab (anti-C5) have been used but the therapeutic benefits are controversial.[29][30][31] Antibiotic therapy should be given if syphilitic cause is confirmed, while investigations and management for hematological malignancies should be pursued in adult patients with unexplained PCH.

Patients with DLHA should be instructed to avoid exposure to cold weather, particularly if the environment is extreme cold. The risk of hemolysis associated with strenuous exercise should be told to the patients.[3]

Patients with DLHA whose anemia is neither mild nor stable and the renal function is not practically normal generally need medical attention and treatment for DLHA.[11]

If the patient with DLHA is in medical emergency, health care providers including hematologist should take actions to preclude the patient from developing severe anemia and/or acute renal failure. At the meanwhile, renal function and hemoglobin of the patient should be closely watched until normalized and stable.[11]

Prognosis

[edit]

Most patients do not require medical intervention. Nevertheless, the rare chances of life-threatening acute drop in hemoglobin are always there and in which are deemed to develop hypovolemic shock and cardiac failure due to severe anemia, and to be complicated by acute tubular necrosis as a result of hemoglobinuria over the aftermath.[32]

In addition to the rarely happened severe anemia and complications, prognosis of DLHA is deemed to be very good. Most patients recovered spontaneously not longer than 30 days since the disease onset.[32]

Long-term mild hemolytic anemia has been reported for several children who were in the likelihood of recurrence on exposure to any kind of cold or with illness.[32]

Case studies of those with recurrent DLHA suggest that repeated episodes of the hemolysis should not be regarded as false positive because the chances do truly exist when the patient has a D-L antibody to an antigen other than anti-P.[33][6] Chronic syphilis-associated DLHA resolves when the underlying disease receives appropriate treatment.[3]

Epidemiology

[edit]

Estimated incidence of PCH is 0.4 per 100000 population,[18][9] and the prevalence ranges from 1.6% to 40% in patients with autoimmune hemolytic anemia.[34][10] The prevalence depends on the sensitivity of the immunologic methods applied.[1] The age of onset is often <5 years in the pediatric population,[18] with male predominance ranging from 2.5:1 to 5:1 in male-to-female ratio.[18][10]

The majority of PCH were accounted by congenital or tertiary syphilis in the early 1900s. Since the application of antibiotic therapy and prenatal screening, syphilitic PCH has become a rare entity.[1] It is now increasingly recognized in pediatric patients with preceding viral-like illness.[19]

Acute AIHA is uncommon.[12] Acute DLHA occurs more in childhood than in adulthood.[35] The D-L autoantibody is an ordinary cause of AIHA in children.[35] It is predicted that 30–40% among all pediatric AIHA cases may have DLHA.[36][37] Male-to-female ratio of the prevalence was shown as 2.1:1, meaning that DHLA is more often seen in males.[37][38] No racial or ethnic difference on prevalence has been noted as of early 2019.[35]

History

[edit]

In 1865, it was widely accepted as a common sense that cold exposure may result in hemoglobinuria paroxysms.[3] After decades of devoted researches, now the elucidation of the etiology and diagnostic methods of DLHA have been learned and developed.[3][39]

Discovering the D–L antibody has empowered DLHA to be differentiated from other hemoglobinuria that something other than D-L is responsible for.[40] As of 2019, it is concluded that the existence of the Donath–Landsteiner antibody is clearly pathognomonic for the DLHA.[3]

See also

[edit]

References

[edit]
  1. ^ a b c d e f g h i j Shanbhag, Satish; Spivak, Jerry (June 2015). "Paroxysmal Cold Hemoglobinuria". Hematology/Oncology Clinics of North America. 29 (3): 473–478. doi:10.1016/j.hoc.2015.01.004. ISSN 0889-8588. PMID 26043386.
  2. ^ Moticka, Edward J. (2013). Historical perspective on evidence-based immunology. Elsevier Science Publishing. p. 300. ISBN 9780123983817.
  3. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa Trisha Simone Tavares, MD, FAAP Attending Physician, Department of Pediatrics, Section of Hematology/Oncology, Cardon Children's Medical Center. Trisha Simone Tavares, MD, FAAP is a member of the following medical societies: Children's Oncology Group (2019-02-02). "Donath–Landsteiner Hemolytic Anemia: Practice Essentials, Pathophysiology, Etiology". Medscape Reference. Retrieved 2019-02-11.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ^ Hayashi, Hisako; Yasutomi, Motoko; Hayashi, Taihei; Yuasa, Miori; Kawakita, Akiko; Hata, Ikue; Tanizawa, Akihiko; Muramatsu, Hideki; Kojima, Seiji; Ohshima, Yusei (2013). "Paroxysmal cold hemoglobinuria caused by an IgM-class Donath–Landsteiner antibody". Pediatrics International. 55 (5). Wiley: 664–666. doi:10.1111/ped.12110. ISSN 1328-8067. PMID 24134760. S2CID 206261041.
  5. ^ Karafin, Matthew S.; Shirey, R. Sue; Ness, Paul M.; King, Karen E.; Keefer, Jeffrey (2012-05-02). "A case study of a child with chronic hemolytic anemia due to a Donath–Landsteiner positive, IgM anti-I autoantibody". Pediatric Blood & Cancer. 59 (5). Wiley: 953–955. doi:10.1002/pbc.24185. ISSN 1545-5009. PMID 22553072. S2CID 41343971.
  6. ^ a b c d e Ogose, Takeshi; Wakata, Yoshifumi; Kaneko, Masaya; Shinahara, Kumi; Takechi, Tomoki; Kotani, Haruko (2007). "A Case of Recurrent Paroxysmal Cold Hemoglobinuria With the Different Temperature Thresholds of Donath–Landsteiner Antibodies". Journal of Pediatric Hematology/Oncology. 29 (10). Ovid Technologies (Wolters Kluwer Health): 716–719. doi:10.1097/mph.0b013e31814d6845. ISSN 1077-4114. PMID 17921855.
  7. ^ Whipple, Nicholas S.; Moreau, Dawn AB.; Moulds, JoAnn M.; Hankins, Jane S.; Wang, Winfred C.; Nottage, Kerri A. (2015-06-05). "Paroxysmal cold hemoglobinuria due to an IgA Donath–Landsteiner antibody". Pediatric Blood & Cancer. 62 (11). Wiley: 2044–2046. doi:10.1002/pbc.25591. ISSN 1545-5009. PMID 26053459. S2CID 45396704.
  8. ^ Deuel, J W; Schaer, C A; Boretti, F S; Opitz, L; Garcia-Rubio, I; Baek, J H; Spahn, D R; Buehler, P W; Schaer, D J (2016-01-21). "Hemoglobinuria-related acute kidney injury is driven by intrarenal oxidative reactions triggering a heme toxicity response". Cell Death and Disease. 7 (1): e2064. doi:10.1038/cddis.2015.392. ISSN 2041-4889. PMC 4816175. PMID 26794659.
  9. ^ a b c Sokol, R.J.; Hewitt, S.; Stamps, Barbara K.; Hitchen, Patricia A. (1984). "Autoimmune Haemolysis in Childhood and Adolescence". Acta Haematologica. 72 (4): 245–257. doi:10.1159/000206397. ISSN 0001-5792. PMID 6438992.
  10. ^ a b c d Vaglio, Stefania; Arista, Maria Cristina; Perrone, Maria Paola; Tomei, Gabriella; Testi, Anna Maria; Coluzzi, Serelina; Girelli, Gabriella (January 2007). "Autoimmune hemolytic anemia in childhood: serologic features in 100 cases". Transfusion. 47 (1): 50–54. doi:10.1111/j.1537-2995.2007.01062.x. ISSN 0041-1132. PMID 17207229. S2CID 23808566.
  11. ^ a b c "Donath–Landsteiner Hemolytic Anemia Treatment & Management: Approach Considerations, Treatment of Severe Disease, Supportive Care". Medscape Reference. 2019-02-02. Retrieved 2019-02-11.
  12. ^ a b c Gehrs, BC; Friedberg, RC (2002). "Autoimmune hemolytic anemia". American Journal of Hematology. 69 (4): 258–71. doi:10.1002/ajh.10062. ISSN 0361-8609. PMID 11921020. S2CID 22547733.
  13. ^ Sivakumaran, M; Murphy, PT; Booker, DJ; Wood, JK; Stamps, R; Sokol, RJ (1999). "Paroxysmal cold haemoglobinuria caused by non-Hodgkin's lymphoma". British Journal of Haematology. 105 (1): 278–9. doi:10.1111/j.1365-2141.1999.01315.x. ISSN 0007-1048. PMID 10233394. S2CID 45019105.
  14. ^ Sharara, AI; Hillsley, RE; Wax, TD; Rosse, WF (1994). "Paroxysmal cold hemoglobinuria associated with non-Hodgkin's lymphoma". Southern Medical Journal. 87 (3): 397–9. doi:10.1097/00007611-199403000-00019. ISSN 0038-4348. PMID 8134864.
  15. ^ Lippman, SM; Winn, L; Grumet, FC; Levitt, LJ (1987). "Evans' syndrome as a presenting manifestation of atypical paroxysmal cold hemoglobinuria". The American Journal of Medicine. 82 (5): 1065–72. doi:10.1016/0002-9343(87)90177-X. ISSN 0002-9343. PMID 3578344.
  16. ^ a b c d Jordan, WS Jr; Prouty, RL (April 1952). "The mechanism of hemolysis in paroxysmal cold hemoglobinuria. III. Erythrophagocytosis and leukopenia". Blood. 7 (4): 387–403. doi:10.1182/blood.V7.4.387.387. PMID 14915984.
  17. ^ a b "Donath–Landsteiner Hemolytic Anemia: Practice Essentials, Pathophysiology, Etiology". Medscape Reference. 2019-02-02. Retrieved 2019-02-11.
  18. ^ a b c d Sokol, R.J.; Hewitt, S.; Stamps, Barbara K. (1982). "Autoimmune Haemolysis Associated with Donath-Landsteiner Antibodies". Acta Haematologica. 68 (4): 268–277. doi:10.1159/000206992. ISSN 0001-5792. PMID 6817570.
  19. ^ a b Sanford, Kimberly W.; Roseff, Susan D. (April 2010). "Detection and Significance of Donath-Landsteiner Antibodies in a 5-year-old Female Presenting With Hemolytic Anemia". Laboratory Medicine. 41 (4): 209–212. doi:10.1309/lm1e9z2qzerepai. ISSN 0007-5027.
  20. ^ Ziman, Alyssa; Cohn, Claudia; Carey, Patricia M.; Dunbar, Nancy M.; Fung, Mark K.; Greinacher, Andreas; Stanworth, Simon; Heddle, Nancy M.; Delaney, Meghan (2016-12-04). "Warm-reactive (immunoglobulin G) autoantibodies and laboratory testing best practices: review of the literature and survey of current practice". Transfusion. 57 (2): 463–477. doi:10.1111/trf.13903. ISSN 0041-1132. PMID 27917465. S2CID 3649244.
  21. ^ Heddle, NM (1989). "Acute paroxysmal cold hemoglobinuria". Transfusion Medicine Reviews. 3 (3): 219–29. doi:10.1016/S0887-7963(89)70082-1. ISSN 0887-7963. PMID 2520556.
  22. ^ Hernandez, JA; Steane, SM (1984). "Erythrophagocytosis by segmented neutrophils in paroxysmal cold hemoglobinuria". American Journal of Clinical Pathology. 81 (6): 787–9. doi:10.1093/ajcp/81.6.787. ISSN 0002-9173. PMID 6731359.
  23. ^ Zanella, A.; Barcellini, W. (2014-09-30). "Treatment of autoimmune hemolytic anemias". Haematologica. 99 (10). Ferrata Storti Foundation (Haematologica): 1547–1554. doi:10.3324/haematol.2014.114561. ISSN 0390-6078. PMC 4181250. PMID 25271314.
  24. ^ a b c d e f g h Gehrs, B. C.; Friedberg, R. C. (2002). "Concise review: Autoimmune Hemolytic Anemia". American Journal of Hematology. 69 (4). Wiley: 258–71. doi:10.1002/ajh.10062. PMID 11921020. S2CID 22547733.
  25. ^ Berentsen, Sigbjørn; Beiske, Klaus; Tjønnfjord, Geir E. (2007-07-21). "Primary chronic cold agglutinin disease: An update on pathogenesis, clinical features and therapy". Hematology (Amsterdam, Netherlands). 12 (5). Informa UK Limited: 361–370. doi:10.1080/10245330701445392. ISSN 1607-8454. PMC 2409172. PMID 17891600.
  26. ^ Berentsen, Sigbjørn; Sundic, Tatjana (2015-01-29). "Red Blood Cell Destruction in Autoimmune Hemolytic Anemia: Role of Complement and Potential New Targets for Therapy". BioMed Research International. 2015. Hindawi Limited. 363278-1–363278-11. doi:10.1155/2015/363278. ISSN 2314-6133. PMC 4326213. PMID 25705656.
  27. ^ Ogose T, Wakata Y, Kaneko M, Shinahara K, Takechi T, Kotani H (October 2007). "A case of recurrent paroxysmal cold hemoglobinuria with the different temperature thresholds of Donath-Landsteiner antibodies". J. Pediatr. Hematol. Oncol. 29 (10): 716–9. doi:10.1097/MPH.0b013e31814d6845. PMID 17921855.
  28. ^ Zanella, Alberto; Barcellini, Wilma (2014-10-01). "Treatment of autoimmune hemolytic anemias". Haematologica. 99 (10): 1547–1554. doi:10.3324/haematol.2014.114561. ISSN 0390-6078. PMC 4181250. PMID 25271314.
  29. ^ Koppel, Ahrin; Lim, Stephen; Osby, Melanie; Garratty, George; Goldfinger, Dennis (October 2007). "Rituximab as successful therapy in a patient with refractory paroxysmal cold hemoglobinuria". Transfusion. 47 (10): 1902–1904. doi:10.1111/j.1537-2995.2007.01414.x. ISSN 0041-1132. PMID 17880618. S2CID 44993467.
  30. ^ Rodrigo, Chaturaka; Rajapakse, Senaka; Gooneratne, Lallindra (2015-04-22). "Rituximab in the treatment of autoimmune haemolytic anaemia". British Journal of Clinical Pharmacology. 79 (5): 709–719. doi:10.1111/bcp.12498. ISSN 0306-5251. PMC 4415708. PMID 25139610.
  31. ^ Gregory, Gareth Peter; Opat, Stephen; Quach, Hang; Shortt, Jake; Tran, Huyen (2010-11-26). "Failure of eculizumab to correct paroxysmal cold hemoglobinuria". Annals of Hematology. 90 (8): 989–990. doi:10.1007/s00277-010-1123-x. ISSN 0939-5555. PMID 21110191. S2CID 7528028.
  32. ^ a b c Wolach, B; Heddle, N; Barr, RD; Zipursky, A; Pai, KR; Blajchman, MA (1981). "Transient Donath–Landsteiner haemolytic anaemia". British Journal of Haematology. 48 (3): 425–34. doi:10.1111/j.1365-2141.1981.tb02734.x. ISSN 0007-1048. PMID 7259991. S2CID 25545783.
  33. ^ Taylor, CJ; Neilson, JR; Chandra, D; Ibrahim, Z (2003). "Recurrent paroxysmal cold haemoglobinuria in a 3-year-old child: a case report". Transfusion Medicine (Oxford, England). 13 (5): 319–21. doi:10.1046/j.1365-3148.2003.00460.x. ISSN 0958-7578. PMID 14617344. S2CID 31184836.
  34. ^ Gertz, Morie A. (2006-01-01). "Cold Hemolytic Syndrome". ASH Education Program Book. 2006 (1): 19–23. doi:10.1182/asheducation-2006.1.19. ISSN 1520-4391. PMID 17124034.
  35. ^ a b c "Donath–Landsteiner Hemolytic Anemia: Practice Essentials, Pathophysiology, Etiology". Medscape Reference. 2019-02-02. Retrieved 2019-02-11.
  36. ^ Petz, Lawrence D. (2008). "Cold antibody autoimmune hemolytic anemias". Blood Reviews. 22 (1). Elsevier BV: 1–15. doi:10.1016/j.blre.2007.08.002. ISSN 0268-960X. PMID 17904258.
  37. ^ a b Sokol, R.J.; Hewitt, S.; Stamps, Barbara K. (1982). "Autoimmune Haemolysis Associated with Donath–Landsteiner Antibodies". Acta Haematologica. 68 (4). S. Karger AG: 268–277. doi:10.1159/000206992. ISSN 0001-5792. PMID 6817570.
  38. ^ Göttsche, B; Salama, A; Mueller-Eckhardt, C (1990). "Donath–Landsteiner autoimmune hemolytic anemia in children. A study of 22 cases". Vox Sanguinis. 58 (4): 281–6. doi:10.1111/j.1423-0410.1990.tb05000.x. ISSN 0042-9007. PMID 2399693. S2CID 56688421.
  39. ^ Coller, B. S. (2015-12-02). "Blood at 70: its roots in the history of hematology and its birth". Blood. 126 (24). American Society of Hematology: 2548–2560. doi:10.1182/blood-2015-09-659581. ISSN 0006-4971. PMC 4671105. PMID 26631112.
  40. ^ Bird, GW (1977). "Paroxysmal cold haemoglobinuria". British Journal of Haematology. 37 (2): 167–71. doi:10.1111/j.1365-2141.1977.tb06832.x. ISSN 0007-1048. PMID 341957. S2CID 215590026.
[edit]
Retrieved from "https://en.wikipedia.org/w/index.php?title=Paroxysmal_cold_hemoglobinuria&oldid=1260527918"