Familial ATTR amyloidosis pathophysiology: Difference between revisions

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===Pathogenesis===
===Pathogenesis===
*[[Amyloid]] is an abnormal insoluble [[extracellular]] [[protein]] that deposits in the different tissues and causes organic dysfunction and a wide variety of clinical syndromes.<ref name="pmid26719234">{{cite journal |vauthors=Wechalekar AD, Gillmore JD, Hawkins PN |title=Systemic amyloidosis |journal=Lancet |volume=387 |issue=10038 |pages=2641–2654 |date=June 2016 |pmid=26719234 |doi=10.1016/S0140-6736(15)01274-X |url=}}</ref>
*It is understood that amyloidosis is the result of deposition of [[Amyloid]].<ref name="pmid26719234">{{cite journal |vauthors=Wechalekar AD, Gillmore JD, Hawkins PN |title=Systemic amyloidosis |journal=Lancet |volume=387 |issue=10038 |pages=2641–2654 |date=June 2016 |pmid=26719234 |doi=10.1016/S0140-6736(15)01274-X |url=}}</ref>
*Amyloid is an abnormal insoluble [[extracellular]] [[protein]] which may cause organic dysfunction and a wide variety of clinical syndromes.
*These abnormal [[Amyloid|amyloids]] are derived from misfolding and aggregation of normally soluble [[Protein|proteins]].
*These abnormal [[Amyloid|amyloids]] are derived from misfolding and aggregation of normally soluble [[Protein|proteins]].
*[[Amyloid]] deposition can disrupt tissue structure of involved organ and consequently leads to organ failure.<ref name="pmid267192342">{{cite journal |vauthors=Wechalekar AD, Gillmore JD, Hawkins PN |title=Systemic amyloidosis |journal=Lancet |volume=387 |issue=10038 |pages=2641–2654 |date=June 2016 |pmid=26719234 |doi=10.1016/S0140-6736(15)01274-X |url=}}</ref>
*[[Amyloid]] deposition can disrupt tissue structure of involved organ and consequently leads to organ failure.<ref name="pmid267192342">{{cite journal |vauthors=Wechalekar AD, Gillmore JD, Hawkins PN |title=Systemic amyloidosis |journal=Lancet |volume=387 |issue=10038 |pages=2641–2654 |date=June 2016 |pmid=26719234 |doi=10.1016/S0140-6736(15)01274-X |url=}}</ref>
*Hereditary amyloidosis is an [[Autosome|autosomal]] [[Dominance relationship|dominant]] disorder.<ref name="pmid11261421">{{cite journal |vauthors=Hund E, Linke RP, Willig F, Grau A |title=Transthyretin-associated neuropathic amyloidosis. Pathogenesis and treatment |journal=Neurology |volume=56 |issue=4 |pages=431–5 |date=February 2001 |pmid=11261421 |doi=10.1212/wnl.56.4.431 |url=}}</ref>
 
*It can have a heterogeneous nature of presentation and can be complicated by significant disability and mortality.<ref name="pmid28978215">{{cite journal |vauthors=Gertz MA |title=Hereditary ATTR amyloidosis: burden of illness and diagnostic challenges |journal=Am J Manag Care |volume=23 |issue=7 Suppl |pages=S107–S112 |date=June 2017 |pmid=28978215 |doi= |url=}}</ref>
==Genetics==
*[[Inherited]] variant [[Protein|proteins]] cause the production and deposition of [[amyloid]] fibrils.<ref name="pmid116772762" />
 
*Hereditary amyloidosis is due to amyloidogenic [[Mutation|mutations]] and the subsequent deposition of [[Amyloid|amyloids]] which include:
* Familial ATTR amyloidosis is transmitted in [[Autosome|autosomal]] [[Dominance relationship|dominant]] pattern but it can have a heterogeneous nature of presentation.<ref name="pmid11261421">{{cite journal |vauthors=Hund E, Linke RP, Willig F, Grau A |title=Transthyretin-associated neuropathic amyloidosis. Pathogenesis and treatment |journal=Neurology |volume=56 |issue=4 |pages=431–5 |date=February 2001 |pmid=11261421 |doi=10.1212/wnl.56.4.431 |url=}}</ref><ref name="pmid28978215">{{cite journal |vauthors=Gertz MA |title=Hereditary ATTR amyloidosis: burden of illness and diagnostic challenges |journal=Am J Manag Care |volume=23 |issue=7 Suppl |pages=S107–S112 |date=June 2017 |pmid=28978215 |doi= |url=}}</ref><ref name="pmid116772762" />
**[[Transthyretin|Transthyretin (TTR)]] (most common [[inherited]] [[mutation]])
 
* Genes involved in the pathogenesis of Familial ATTR amyloidosis include:
** [[Transthyretin|Transthyretin (TTR)]] (most common [[inherited]] [[mutation]])
**[[Fibrinogen]]
**[[Fibrinogen]]
**[[Apolipoprotein A1]]
**[[Apolipoprotein A1]]
Line 47: Line 50:
**[[Lysozyme]]
**[[Lysozyme]]
**[[Gelsolin]] [[Gene|genes]]
**[[Gelsolin]] [[Gene|genes]]
*The exact pathogenesis of [disease name] is not completely understood.
OR
*It is understood that [disease name] is the result of / is mediated by / is produced by / is caused by either [hypothesis 1], [hypothesis 2], or [hypothesis 3].
*[Pathogen name] is usually transmitted via the [transmission route] route to the human host.
*Following transmission/ingestion, the [pathogen] uses the [entry site] to invade the [cell name] cell.
*[Disease or malignancy name] arises from [cell name]s, which are [cell type] cells that are normally involved in [function of cells].
*The progression to [disease name] usually involves the [molecular pathway].
*The pathophysiology of [disease/malignancy] depends on the histological subtype.
==Genetics==
[Disease name] is transmitted in [mode of genetic transmission] pattern.
OR
Genes involved in the pathogenesis of [disease name] include:
*[Gene1]
*[Gene2]
*[Gene3]
OR
The development of [disease name] is the result of multiple genetic mutations such as:
*[Mutation 1]
*[Mutation 2]
*[Mutation 3]


==Associated Conditions==
==Associated Conditions==

Revision as of 22:56, 29 October 2019

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

The exact pathogenesis of [disease name] is not fully understood.

OR

It is thought that [disease name] is the result of / is mediated by / is produced by / is caused by either [hypothesis 1], [hypothesis 2], or [hypothesis 3].

OR

[Pathogen name] is usually transmitted via the [transmission route] route to the human host.

OR

Following transmission/ingestion, the [pathogen] uses the [entry site] to invade the [cell name] cell.

OR


[Disease or malignancy name] arises from [cell name]s, which are [cell type] cells that are normally involved in [function of cells].

OR

The progression to [disease name] usually involves the [molecular pathway].

OR

The pathophysiology of [disease/malignancy] depends on the histological subtype.

Pathophysiology

Pathogenesis

  • It is understood that amyloidosis is the result of deposition of Amyloid.[1]
  • Amyloid is an abnormal insoluble extracellular protein which may cause organic dysfunction and a wide variety of clinical syndromes.
  • These abnormal amyloids are derived from misfolding and aggregation of normally soluble proteins.
  • Amyloid deposition can disrupt tissue structure of involved organ and consequently leads to organ failure.[2]

Genetics

  • Familial ATTR amyloidosis is transmitted in autosomal dominant pattern but it can have a heterogeneous nature of presentation.[3][4][5]

Associated Conditions

Conditions associated with [disease name] include:

  • [Condition 1]
  • [Condition 2]
  • [Condition 3]

Gross Pathology

On gross pathology, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].

Microscopic Pathology

On microscopic histopathological analysis, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].

References

  1. Wechalekar AD, Gillmore JD, Hawkins PN (June 2016). "Systemic amyloidosis". Lancet. 387 (10038): 2641–2654. doi:10.1016/S0140-6736(15)01274-X. PMID 26719234.
  2. Wechalekar AD, Gillmore JD, Hawkins PN (June 2016). "Systemic amyloidosis". Lancet. 387 (10038): 2641–2654. doi:10.1016/S0140-6736(15)01274-X. PMID 26719234.
  3. Hund E, Linke RP, Willig F, Grau A (February 2001). "Transthyretin-associated neuropathic amyloidosis. Pathogenesis and treatment". Neurology. 56 (4): 431–5. doi:10.1212/wnl.56.4.431. PMID 11261421.
  4. Gertz MA (June 2017). "Hereditary ATTR amyloidosis: burden of illness and diagnostic challenges". Am J Manag Care. 23 (7 Suppl): S107–S112. PMID 28978215.

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