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{{Glanzmann's thrombasthenia}}
{{Glanzmann's thrombasthenia}}


{{CMG}} '''Associate Editor(s)-in-Chief:''' [[User:Niush.D|Niyousha Danesh, MD-MPH]]
{{CMG}} {{AE}} {{OK}}, [[User:Niush.D|Niyousha Danesh, MD-MPH]]


==Overview==
==Overview==
In 1918, Eduard Glanzmann, a Swiss [[pediatrician]], described [[Glanzmann's thrombasthenia]] for the first time. It was known formerly as “[[hereditary]] [[hemorrhagic]] [[thrombasthenia]]”, but Glanzmann proposed it was not abnormal [[platelet]] number but a disorder of [[clotting]]. Later, it was defined as a heritable platelet disorder secondary to a dysfunction in [[GPIIb/IIIa]] complex. In 1956, Braunsteiner and Pakesch described [[Glanzmann's thrombasthenia]] as an inherited disorder with normal sized platelets that failed [[clot retraction]]. In 1965, Castaldi and Caen 7 showed that the [[platelet]] [[fibrinogen]] was either strongly diminished (in parallel with the impaired [[clot retraction]]) or borderline to the normal range. In 1966, Caen et al. explained 15 patients with [[Glanzmann's thrombasthenia]], with decreased or nil [[platelet aggregation]] but the [[clot retraction]] was sometimes only mildly effected. The variant disease was first established in 1987 In the mid 1970’s, Nurden and Caen and Phillips et al. discovered a deficiency of both [[Glycoprotein IIb/IIIa|GPIIb/GPIIIa]] in thrombasthenic [[platelets]]. Today, it receives much recognition, as it was one of the first disorders to define [[GPIIb/IIIa]] as a platelet receptor for adhesive molecules (such as [[Von Willebrand factor|VWF]] and [[fibrinogen]]). Glanzmann's thrombasthenia served as a template for platelet aggregation process as well as targets for therapeutic measures.


==Historical Perspective==
==Historical Perspective==
In 1918, Eduard Glanzmann, a Swiss [[pediatrician]], first described this disease. It was known formerly as “[[hereditary]] hemorrhagic thrombasthenia”, but Glanzmann proposed it was not abnormal platelet number but a disorder of clotting.  
In 1918, Eduard Glanzmann, a Swiss [[pediatrician]], described [[Glanzmann's thrombasthenia]] for the first time. It was known formerly as “[[hereditary]] [[hemorrhagic]] [[thrombasthenia]]”, but Glanzmann proposed it was not abnormal [[platelet]] number but a disorder of [[clotting]]<ref name="pmid26185478">{{cite journal |vauthors=Solh T, Botsford A, Solh M |title=Glanzmann's thrombasthenia: pathogenesis, diagnosis, and current and emerging treatment options |journal=J Blood Med |volume=6 |issue= |pages=219–27 |date=2015 |pmid=26185478 |pmc=4501245 |doi=10.2147/JBM.S71319 |url=}}</ref>. Later, it was defined as a heritable platelet disorder secondary to a dysfunction in [[GPIIb/IIIa]] complex.<ref name="pmid26185478">{{cite journal| author=Solh T, Botsford A, Solh M| title=Glanzmann's thrombasthenia: pathogenesis, diagnosis, and current and emerging treatment options. | journal=J Blood Med | year= 2015 | volume= 6 | issue=  | pages= 219-27 | pmid=26185478 | doi=10.2147/JBM.S71319 | pmc=4501245 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26185478  }}</ref>


According to a biographical account, Glanzmann’s encounter with a symptomatic 7-year-old girl led him to study the disease within families.Considerable familial pattern and symptoms manifesting in children guided him to a possible hereditary component. The disease was later defined as a heritable platelet disorder secondary to a dysfunction in [[GPIIb/IIIa]] complex.<ref name="pmid26185478">{{cite journal| author=Solh T, Botsford A, Solh M| title=Glanzmann's thrombasthenia: pathogenesis, diagnosis, and current and emerging treatment options. | journal=J Blood Med | year= 2015 | volume= 6 | issue= | pages= 219-27 | pmid=26185478 | doi=10.2147/JBM.S71319 | pmc=4501245 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26185478  }}</ref>
In 1956, Braunsteiner and Pakesch described [[Glanzmann's thrombasthenia]] as an inherited disorder with normal sized platelets that failed [[clot retraction]].<ref name="pmid16722529">{{cite journal |vauthors=Nurden AT |title=Glanzmann thrombasthenia |journal=Orphanet J Rare Dis |volume=1 |issue= |pages=10 |date=April 2006 |pmid=16722529 |pmc=1475837 |doi=10.1186/1750-1172-1-10 |url=}}</ref>


In 1956, Braunsteiner and Pakesch reviewed disorders of platelet function and described thrombasthenia as an inherited disease characterized by platelets of normal size that failed to spread onto the surface and did not support clot retraction.
In 1965, Castaldi and Caen 7 showed that the [[platelet]] [[fibrinogen]] was either strongly diminished (in parallel with the impaired [[clot retraction]]) or borderline to the normal range. In the mid 1970’s, Nurden and Caen and Phillips et al. discovered a deficiency of both [[Glycoprotein IIb/IIIa|GPIIb/GPIIIa]] in thrombasthenic [[platelets]].<ref name="pmid12487785">{{cite journal| author=Nair S, Ghosh K, Kulkarni B, Shetty S, Mohanty D| title=Glanzmann's thrombasthenia: updated. | journal=Platelets | year= 2002 | volume= 13 | issue= 7 | pages= 387-93 | pmid=12487785 | doi=10.1080/0953710021000024394 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12487785  }}</ref>


About 50 years later, the development of methods for studying platelets demonstrated that thrombasthenic patients failed to aggregate in response to physiological agonists such as [[Adenosine diphosphate|ADP]], [[epinephrine]], [[collagen]] and [[thrombin]] had markedly reduced levels of platelet [[fibrinogen]] and had reduced or absent clot retraction.  
In 1966, Caen et al. explained 15 patients with [[Glanzmann's thrombasthenia]], with decreased or nil [[platelet aggregation]] but the [[clot retraction]] was sometimes only mildly effected.<ref name="pmid16722529">{{cite journal |vauthors=Nurden AT |title=Glanzmann thrombasthenia |journal=Orphanet J Rare Dis |volume=1 |issue= |pages=10 |date=April 2006 |pmid=16722529 |pmc=1475837 |doi=10.1186/1750-1172-1-10 |url=}}</ref>The variant disease was first established in 1987.<ref name="pmid16722529" />


In 1966, Caen et al.2 described 15 patients with Glanzmann’s thrombasthenia in which platelet aggregation was either nil or drastically decreased but the clot retraction was sometimes only slightly diminished.
Today, it receives much recognition, as it was one of the first disorders to define [[GPIIb/IIIa]] as a platelet receptor for adhesive molecules (such as [[Von Willebrand factor|VWF]] and [[fibrinogen]]). Glanzmann's thrombasthenia served as a template for platelet aggregation process as well as targets for therapeutic measures.<ref name="pmid26185478" />
 
In 1965, Castaldi and Caen 7 showed that the platelet fibrinogen was either strongly diminished (in parallel with the impaired clot retraction) or borderline to the normal range.
 
In the mid 1970’s Nurden and Caen and Phillips et al. discovered that thrombasthenic platelets were deficient in both GPIIb and GPIIIa.<ref name="pmid12487785">{{cite journal| author=Nair S, Ghosh K, Kulkarni B, Shetty S, Mohanty D| title=Glanzmann's thrombasthenia: updated. | journal=Platelets | year= 2002 | volume= 13 | issue= 7 | pages= 387-93 | pmid=12487785 | doi=10.1080/0953710021000024394 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12487785  }}</ref>
 
Those patients with absent [[platelet aggregation]] and absent clot retraction were subsequently termed as having type I disease; those with absent aggregation but residual clot retraction, type II disease; while variant disease was first established in 1987.<ref name="pmid16722529">{{cite journal| author=Nurden AT| title=Glanzmann thrombasthenia. | journal=Orphanet J Rare Dis | year= 2006 | volume= 1 | issue=  | pages= 10 | pmid=16722529 | doi=10.1186/1750-1172-1-10 | pmc=1475837 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16722529  }}</ref>
 
Today GT receives much recognition, as it was one of the first disorders to define [[GPIIb/IIIa]] as a platelet receptor for adhesive molecules (such as [[Von Willebrand factor|VWF]] and [[fibrinogen]]). The disease also served as a template for understanding processes of platelet aggregation as well as targets for therapeutic measures.<ref name="pmid26185478" />


==References==
==References==
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[[Category:Disease]]
[[Category:Disease]]
[[Category:Hematology]]
[[Category:Hematology]]
[[Category:Primary care]]

Latest revision as of 21:52, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Omer Kamal, M.D.[2], Niyousha Danesh, MD-MPH

Overview

In 1918, Eduard Glanzmann, a Swiss pediatrician, described Glanzmann's thrombasthenia for the first time. It was known formerly as “hereditary hemorrhagic thrombasthenia”, but Glanzmann proposed it was not abnormal platelet number but a disorder of clotting. Later, it was defined as a heritable platelet disorder secondary to a dysfunction in GPIIb/IIIa complex. In 1956, Braunsteiner and Pakesch described Glanzmann's thrombasthenia as an inherited disorder with normal sized platelets that failed clot retraction. In 1965, Castaldi and Caen 7 showed that the platelet fibrinogen was either strongly diminished (in parallel with the impaired clot retraction) or borderline to the normal range. In 1966, Caen et al. explained 15 patients with Glanzmann's thrombasthenia, with decreased or nil platelet aggregation but the clot retraction was sometimes only mildly effected. The variant disease was first established in 1987 In the mid 1970’s, Nurden and Caen and Phillips et al. discovered a deficiency of both GPIIb/GPIIIa in thrombasthenic platelets. Today, it receives much recognition, as it was one of the first disorders to define GPIIb/IIIa as a platelet receptor for adhesive molecules (such as VWF and fibrinogen). Glanzmann's thrombasthenia served as a template for platelet aggregation process as well as targets for therapeutic measures.

Historical Perspective

In 1918, Eduard Glanzmann, a Swiss pediatrician, described Glanzmann's thrombasthenia for the first time. It was known formerly as “hereditary hemorrhagic thrombasthenia”, but Glanzmann proposed it was not abnormal platelet number but a disorder of clotting[1]. Later, it was defined as a heritable platelet disorder secondary to a dysfunction in GPIIb/IIIa complex.[1]

In 1956, Braunsteiner and Pakesch described Glanzmann's thrombasthenia as an inherited disorder with normal sized platelets that failed clot retraction.[2]

In 1965, Castaldi and Caen 7 showed that the platelet fibrinogen was either strongly diminished (in parallel with the impaired clot retraction) or borderline to the normal range. In the mid 1970’s, Nurden and Caen and Phillips et al. discovered a deficiency of both GPIIb/GPIIIa in thrombasthenic platelets.[3]

In 1966, Caen et al. explained 15 patients with Glanzmann's thrombasthenia, with decreased or nil platelet aggregation but the clot retraction was sometimes only mildly effected.[2]The variant disease was first established in 1987.[2]

Today, it receives much recognition, as it was one of the first disorders to define GPIIb/IIIa as a platelet receptor for adhesive molecules (such as VWF and fibrinogen). Glanzmann's thrombasthenia served as a template for platelet aggregation process as well as targets for therapeutic measures.[1]

References

  1. 1.0 1.1 1.2 Solh T, Botsford A, Solh M (2015). "Glanzmann's thrombasthenia: pathogenesis, diagnosis, and current and emerging treatment options". J Blood Med. 6: 219–27. doi:10.2147/JBM.S71319. PMC 4501245. PMID 26185478.
  2. 2.0 2.1 2.2 Nurden AT (April 2006). "Glanzmann thrombasthenia". Orphanet J Rare Dis. 1: 10. doi:10.1186/1750-1172-1-10. PMC 1475837. PMID 16722529.
  3. Nair S, Ghosh K, Kulkarni B, Shetty S, Mohanty D (2002). "Glanzmann's thrombasthenia: updated". Platelets. 13 (7): 387–93. doi:10.1080/0953710021000024394. PMID 12487785.