Linked Life Data

19786802

Source:http://linkedlifedata.com/resource/pubmed/id/19786802

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-2-17
pubmed:abstractText
Background: The migration of dendritic cells (DCs) from the lungs to the regional lymph nodes is necessary for the development of allergic airway disease. Following activation, mast cells release a variety of stored or de novo-produced inflammatory mediators, several of them being capable of activating DCs. In this study, the role of mast cells on DC migration from the lungs to the thoracic lymph nodes was investigated in sensitized mice. Methods: Mast cell-deficient mice (Kit(W-sh/W-sh)) and their wild-type counterparts were sensitized intraperitoneally with ovalbumine (OVA) in saline and challenged by a single intranasal administration of OVA labeled with a fluorescent dye (OVA-Alexa). Results: Following challenge, the relative and absolute amount of OVA- Alexa-positive DCs was clearly increased in sensitized wild-type mice compared to nonsensitized mice. In contrast, sensitized Kit(W-sh/W-sh) showed no increase in OVA-Alexa-positive DCs compared to nonsensitized mast cell-deficient animals. In sensitized Kit(W-sh/W-sh) mice reconstituted with bone marrow-derived mast cells (BMMCs), the number of OVA- Alexa-positive DCs was comparable to that in sensitized wild-type animals. However, transfer of allergen-exposed BMMCs to sensitized mice prior to airway challenge augmented airway inflammation similarly in wild-type and mast cell-deficient mice. In line with this, sensitization with allergen-pulsed DCs induced allergic airway disease independently of mast cells. Conclusions: This study shows an interaction between mast cells and DCs following allergen challenge in sensitized hosts. However, the function of mast cells can be bypassed in models utilizing activated allergen-exposed DCs to initiate the development of allergic airway disease.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1423-0097
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
151
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
214-22
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Mast cells induce migration of dendritic cells in a murine model of acute allergic airway disease.
pubmed:affiliation
Department of Pulmonary Medicine, Third Medical Clinic, Johannes Gutenberg University Mainz, Mainz, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't