Familial amyloidosis laboratory findings: Difference between revisions

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'''Cardiac'''
'''Cardiac'''


* [[Cardiac biomarkers]] are the most important predictors of outcome in amyloidosis. They provide a quantitative assessment for [[Heart|cardiac]] damage and wall strain.<ref name="pmid21483018">{{cite journal |vauthors=Merlini G, Seldin DC, Gertz MA |title=Amyloidosis: pathogenesis and new therapeutic options |journal=J. Clin. Oncol. |volume=29 |issue=14 |pages=1924–33 |date=May 2011 |pmid=21483018 |pmc=3138545 |doi=10.1200/JCO.2010.32.2271 |url=}}</ref>
* [[Cardiac biomarkers]] are the most important predictors of outcome in amyloidosis. They provide a quantitative assessment for [[Heart|cardiac]] damage and wall strain.<ref name="pmid21483018">{{cite journal |vauthors=Merlini G, Seldin DC, Gertz MA |title=Amyloidosis: pathogenesis and new therapeutic options |journal=J. Clin. Oncol. |volume=29 |issue=14 |pages=1924–33 |date=May 2011 |pmid=21483018 |pmc=3138545 |doi=10.1200/JCO.2010.32.2271 |url=}}</ref><ref name="pmid23227278">{{cite journal |vauthors=Baker KR, Rice L |title=The amyloidoses: clinical features, diagnosis and treatment |journal=Methodist Debakey Cardiovasc J |volume=8 |issue=3 |pages=3–7 |date=2012 |pmid=23227278 |pmc=3487569 |doi= |url=}}</ref><ref name="pmid25378951">{{cite journal |vauthors=Real de Asúa D, Costa R, Galván JM, Filigheddu MT, Trujillo D, Cadiñanos J |title=Systemic AA amyloidosis: epidemiology, diagnosis, and management |journal=Clin Epidemiol |volume=6 |issue= |pages=369–77 |date=2014 |pmid=25378951 |pmc=4218891 |doi=10.2147/CLEP.S39981 |url=}}</ref>
:* Troponin I or Troponin T
:* Troponin I or Troponin T
:* BNP and NT-proBNP
:* BNP and NT-proBNP

Revision as of 18:43, 30 October 2019

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Farima Kahe M.D. [2]

Overview

Laboratory findings in amyloidosis include elevated erythrocyte sedimentation rate, increased BUN level, serum creatinine, protein, casts, or fat bodies in urine. Serum troponin, B-type natriuretic peptide, and beta-2-microglobulin are prognostic markers for heart failure. Amyloid deposits can be identified histologically by Congo red staining and viewing under polarized light where amyloid deposits produce a distinctive 'apple green birefringence'. Alternatively, thioflavin T stain may be used. An abdominal fat pad aspiration, rectal mucosa biopsy, or bone marrow biopsy can help confirm the diagnosis. They reveal positive findings in 80% patients.

Laboratory Findings

Cardiac

  • Troponin I or Troponin T
  • BNP and NT-proBNP

Hepatic

  • AST
  • ALT
  • Total bilirubin
  • Alkaline phosphatase
  • Albumin

Renal

  • Common tests that are abnormal in renal function tests including:

Thyroid

  • Common tests that are abnormal in thyroidal involvement of amyloidosis include:
  • TSH
  • Free T4

Bone marrow

References

  1. Merlini G, Seldin DC, Gertz MA (May 2011). "Amyloidosis: pathogenesis and new therapeutic options". J. Clin. Oncol. 29 (14): 1924–33. doi:10.1200/JCO.2010.32.2271. PMC 3138545. PMID 21483018.
  2. Baker KR, Rice L (2012). "The amyloidoses: clinical features, diagnosis and treatment". Methodist Debakey Cardiovasc J. 8 (3): 3–7. PMC 3487569. PMID 23227278.
  3. Real de Asúa D, Costa R, Galván JM, Filigheddu MT, Trujillo D, Cadiñanos J (2014). "Systemic AA amyloidosis: epidemiology, diagnosis, and management". Clin Epidemiol. 6: 369–77. doi:10.2147/CLEP.S39981. PMC 4218891. PMID 25378951.
  4. Kourelis TV, Kumar SK, Gertz MA, Lacy MQ, Buadi FK, Hayman SR; et al. (2013). "Coexistent multiple myeloma or increased bone marrow plasma cells define equally high-risk populations in patients with immunoglobulin light chain amyloidosis". J Clin Oncol. 31 (34): 4319–24. doi:10.1200/JCO.2013.50.8499. PMC 4881366. PMID 24145344.

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