Recent progress in understanding the pathogenesis of immune thrombocytopenia
(2010) In Current Opinion in Hematology 17(6). p.5-590- Abstract
PURPOSE OF REVIEW: Immune thrombocytopenia (ITP) is a bleeding disorder in which both antibody and cell-mediated autoimmune responses are directed against an individual's own platelets and/or megakaryocytes, leading to either enhanced platelet destruction and/or reduced platelet production, respectively. The cause of this platelet-specific autoimmunity remains unknown, but there has been a constant stream of recent publications that suggest ITP is the result of T-cell dysregulation.
RECENT FINDINGS: In the last 18 months, a rich tapestry of studies has emerged that seems to clarify some immunopathologic issues in ITP while raising new questions related to ITP pathogenesis. The current view on the immunopathogenic mechanisms... (More)
PURPOSE OF REVIEW: Immune thrombocytopenia (ITP) is a bleeding disorder in which both antibody and cell-mediated autoimmune responses are directed against an individual's own platelets and/or megakaryocytes, leading to either enhanced platelet destruction and/or reduced platelet production, respectively. The cause of this platelet-specific autoimmunity remains unknown, but there has been a constant stream of recent publications that suggest ITP is the result of T-cell dysregulation.
RECENT FINDINGS: In the last 18 months, a rich tapestry of studies has emerged that seems to clarify some immunopathologic issues in ITP while raising new questions related to ITP pathogenesis. The current view on the immunopathogenic mechanisms associated with ITP appears to particularly concentrate on how incompetent CD4+ T-regulatory cells (Tregs) allow autoimmune effector mechanisms to proceed and cause thrombocytopenia. There is a parallel body of recent literature focusing on molecular mimicry mechanisms, B-cell abnormalities, abnormal cytokine patterns and genetic studies in ITP. Of interest, one can recognize inter-relationships between these immune dysregulations.
SUMMARY: This article will discuss the literature from the past 18 months pertaining to these observations and will show that whereas many of the T-cell defects have been clarified, new questions have also come to light and more immunopathological research is warranted.
(Less)
- author
- Semple, John W LU ; Provan, Drew ; Garvey, M Bernadette and Freedman, John
- publishing date
- 2010-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Blood Platelets, Humans, T-Lymphocytes, Thrombocytopenia, Journal Article, Review
- in
- Current Opinion in Hematology
- volume
- 17
- issue
- 6
- pages
- 6 pages
- publisher
- Lippincott Williams & Wilkins
- external identifiers
-
- pmid:20739879
- scopus:78049291385
- ISSN
- 1531-7048
- DOI
- 10.1097/MOH.0b013e32833eaef3
- language
- English
- LU publication?
- no
- id
- fb593864-7a86-4c24-896a-e31cd6a69f9a
- date added to LUP
- 2016-09-23 12:05:30
- date last changed
- 2024-02-03 00:20:17
@article{fb593864-7a86-4c24-896a-e31cd6a69f9a,
abstract = {{<p>PURPOSE OF REVIEW: Immune thrombocytopenia (ITP) is a bleeding disorder in which both antibody and cell-mediated autoimmune responses are directed against an individual's own platelets and/or megakaryocytes, leading to either enhanced platelet destruction and/or reduced platelet production, respectively. The cause of this platelet-specific autoimmunity remains unknown, but there has been a constant stream of recent publications that suggest ITP is the result of T-cell dysregulation.</p><p>RECENT FINDINGS: In the last 18 months, a rich tapestry of studies has emerged that seems to clarify some immunopathologic issues in ITP while raising new questions related to ITP pathogenesis. The current view on the immunopathogenic mechanisms associated with ITP appears to particularly concentrate on how incompetent CD4+ T-regulatory cells (Tregs) allow autoimmune effector mechanisms to proceed and cause thrombocytopenia. There is a parallel body of recent literature focusing on molecular mimicry mechanisms, B-cell abnormalities, abnormal cytokine patterns and genetic studies in ITP. Of interest, one can recognize inter-relationships between these immune dysregulations.</p><p>SUMMARY: This article will discuss the literature from the past 18 months pertaining to these observations and will show that whereas many of the T-cell defects have been clarified, new questions have also come to light and more immunopathological research is warranted.</p>}},
author = {{Semple, John W and Provan, Drew and Garvey, M Bernadette and Freedman, John}},
issn = {{1531-7048}},
keywords = {{Blood Platelets; Humans; T-Lymphocytes; Thrombocytopenia; Journal Article; Review}},
language = {{eng}},
number = {{6}},
pages = {{5--590}},
publisher = {{Lippincott Williams & Wilkins}},
series = {{Current Opinion in Hematology}},
title = {{Recent progress in understanding the pathogenesis of immune thrombocytopenia}},
url = {{http://dx.doi.org/10.1097/MOH.0b013e32833eaef3}},
doi = {{10.1097/MOH.0b013e32833eaef3}},
volume = {{17}},
year = {{2010}},
}