Aplastic anemia: Difference between revisions

From Citizendium
Jump to navigation Jump to search
imported>Michael Benjamin
(Started page)
 
mNo edit summary
 
(7 intermediate revisions by 4 users not shown)
Line 1: Line 1:
Aplastic anemia is clinical syndrome, characterized by a hypoplastic [[bone marrow]] in the setting of [[pancytopenia]].  The pathogenesis of aplastic anemia is damage to the [[pluripotent stem cell]] reserves of the [[bone marrow]].
{{subpages}}
{{TOC|right}}
'''Aplastic anemia''' is clinical syndrome, characterized by a hypoplastic [[bone marrow]] in the setting of [[pancytopenia]].  The pathogenesis of aplastic anemia is damage to the [[pluripotent stem cell]] reserves of the [[bone marrow]], which leads to profound low [[white blood cell]], [[red blood cell]], and [[platelet]] counts.


Patterns of aplastic anemia include:
Patterns of aplastic anemia include:
Line 5: Line 7:
*Drug-induced
*Drug-induced
*Radiation
*Radiation
*Infections
*Infection
*Idiopathic
*Idiopathic
==Hereditary forms of aplastic anemia==
[[Fanconi's anemia]] is the most common hereditary aplastic anemia.  Genes involved in [[DNA mismatch repair]] have been implicated in [[Fanconi's anemia]], and aplastic anemia usually takes place before adulthood.
==Drugs and aplastic anemia==
Clinicians will avoid drugs associated with aplastic anemia unless there is no better choice, which is indeed the case. Not all drugs carry the same risk, and thus are more likely to be used.  In the list below, for example, there are usually alternatives to [[chloramphenicol]], but most anticonvulsants are on the list:
*[[Phenylbutazone]]
*[[Chloramphenicol]]
*[[Gold]]
*[[Sulfonamide]]s
*[[Sulfonylurea]]s, such as glipizide
*[[Felbamate]]
*[[Carbamazepine]]
*[[Valproic acid]]
*[[Phenytoin]]
*[[Nifedipine]]
*[[Ticlopidine]] <ref>{{cite journal |author=Symeonidis A, Kouraklis-Symeonidis A, Seimeni U, Galani A, Giannakoulas N, Fragopanagou E, Tiniakou M, Matsouka P, Zoumbos N |title=Ticlopidine-induced aplastic anemia: two new case reports, review, and meta-analysis of 55 additional cases |journal=Am J Hematol |volume=71 |issue=1 |pages=24-32 |year=2002 |pmid=12221670}}</ref>
*[[Clopidogrel]] <ref>{{cite journal |author=Meyer B, Staudinger T, Lechner K |title=Clopidogrel and aplastic anaemia |journal=Lancet |volume=357 |issue=9266 |pages=1446-7 |year=2001 |pmid=11360950}}</ref>
*[[Penicillin]]
*[[Allopurinol]]
*[[Furosemide]]


====Drugs and aplastic anemia====
==Radiation-induced aplastic anemia==
====Radiation-induced aplastic anemia====
[[Acute radiation syndrome]] with a single exposure to 5 Gy of radiation energy will kill 50 percent of recipients, due to irreversible injury to hematopoeitic stem cells.
====Infection-induced aplastic anemia====
==Infection-induced aplastic anemia==
====Idiopathic aplastic anemia====
==Idiopathic aplastic anemia==
====Treatment====
==Treatment==
==References==
<references/>[[Category:Suggestion Bot Tag]]

Latest revision as of 17:00, 11 July 2024

This article is developing and not approved.
Main Article
Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
This editable Main Article is under development and subject to a disclaimer.

Aplastic anemia is clinical syndrome, characterized by a hypoplastic bone marrow in the setting of pancytopenia. The pathogenesis of aplastic anemia is damage to the pluripotent stem cell reserves of the bone marrow, which leads to profound low white blood cell, red blood cell, and platelet counts.

Patterns of aplastic anemia include:

  • Hereditary
  • Drug-induced
  • Radiation
  • Infection
  • Idiopathic

Hereditary forms of aplastic anemia

Fanconi's anemia is the most common hereditary aplastic anemia. Genes involved in DNA mismatch repair have been implicated in Fanconi's anemia, and aplastic anemia usually takes place before adulthood.

Drugs and aplastic anemia

Clinicians will avoid drugs associated with aplastic anemia unless there is no better choice, which is indeed the case. Not all drugs carry the same risk, and thus are more likely to be used. In the list below, for example, there are usually alternatives to chloramphenicol, but most anticonvulsants are on the list:

Radiation-induced aplastic anemia

Acute radiation syndrome with a single exposure to 5 Gy of radiation energy will kill 50 percent of recipients, due to irreversible injury to hematopoeitic stem cells.

Infection-induced aplastic anemia

Idiopathic aplastic anemia

Treatment

References

  1. Symeonidis A, Kouraklis-Symeonidis A, Seimeni U, Galani A, Giannakoulas N, Fragopanagou E, Tiniakou M, Matsouka P, Zoumbos N (2002). "Ticlopidine-induced aplastic anemia: two new case reports, review, and meta-analysis of 55 additional cases". Am J Hematol 71 (1): 24-32. PMID 12221670.
  2. Meyer B, Staudinger T, Lechner K (2001). "Clopidogrel and aplastic anaemia". Lancet 357 (9266): 1446-7. PMID 11360950.