Molecular pathology

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Molecular pathology is the future of pathology.

Overview

Molecular pathology can be divided as follows:

 
 
 
Molecular
pathology
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Molecular
 
 
 
Cytogenetics

Molecular

General:

  • Very small changes.

Techniques:

  • DNA sequencing - RT-PCR.
  • RNA sequencing.
  • Southern blot.

Tests

Hereditary:

Target Technique Disease Notes
F2[1] PCR thrombophilia see Risks for VTE
F5[2] PCR thrombophilia see Risks for VTE
HFE[3] Cys282Tyr, His63Asp PCR hemochromatosis -
Malignant hyperthermia anesthetics
Herediary amyloidosis
Alpha thalassemia

Lymphoma:

  • Follicular lymphoma vs. follicular hyperplasia (BCL2).
  • T cell neoplasia.
  • B cell neoplasia.
  • PTLPD vs. rejection.
  • HHV associated lymphomas.

Leukemia:

  • Several.

Carcinoma:

Other:

  • Oligodendroglioma.
  • Identity testing (15 STRs and amelogenin (XY) loci).
  • Melanoma (KIT, BRAF).
  • Synovial sarcoma.
  • Myeloproliferative disorders.
  • AML, mastocytosis, GIST.

Cytogenetics

General:

  • Large changes (chromosomal).
    • Maximum resolution 3-4 megabase pairs (3-4 million base pairs); may be less - dependent on band density.[4]

Techniques:

  • ISH = in situ hybridization.
    • FISH = fluorescent in situ hybridization.
    • SISH = silver in situ hybridization.[5]

Image:

World protein databank

I can't help think it is ironic that the protein databank goal is to maintain a free and publicly available archive,[6] yet the announcement is in pay-for-access journal (Nature Structual Biology).[7]

Wnt/beta-catenin pathway

Important in hepatoblastomas.[8]

See also

References

  1. Online 'Mendelian Inheritance in Man' (OMIM) 176930
  2. Online 'Mendelian Inheritance in Man' (OMIM) 612309
  3. Online 'Mendelian Inheritance in Man' (OMIM) 613609
  4. Humphrey, Peter A; Dehner, Louis P; Pfeifer, John D (2008). The Washington Manual of Surgical Pathology (1st ed.). Lippincott Williams & Wilkins. pp. 695. ISBN 978-0781765275.
  5. URL: http://www.immunoportal.com/modules.php?name=News&file=article&sid=186. Accessed on: 2 May 2011.
  6. Worldwide Protein Data Bank. URL: http://www.wwpdb.org/faq.html Accessed on: April 22, 2009.
  7. Berman H, Henrick K, Nakamura H (December 2003). "Announcing the worldwide Protein Data Bank". Nat. Struct. Biol. 10 (12): 980. doi:10.1038/nsb1203-980. PMID 14634627.
  8. Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease (7th ed.). St. Louis, Mo: Elsevier Saunders. pp. 923. ISBN 0-7216-0187-1.