Linked Life Data

2919437

Source:http://linkedlifedata.com/resource/pubmed/id/2919437

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-4-6
pubmed:abstractText
Lung alveolar macrophages (LAM), obtained by bronchoalveolar lavage of healthy donors, were separated into four subfractions on discontinuous gradients of Percoll and subjected to light microscopic, transmission (TEM) and scanning electron microscopic (SEM) studies. Alveolar macrophage morphometric analysis was performed on cytocentrifuged preparations. TEM of subpopulations revealed considerable morphologic heterogeneity. By SEM, cells of the most dense (D) subfraction were small, round, and, typically, the surface was highly ruffled with small membrane pseudopods. Cells of the least dense subfraction (A) showed a low degree of membrane folding or filopodia and were often totally disorganized. In smokers, macrophages of fraction A had a greater area and perimeter compared with non-smokers, whereas the inverse relationship was observed for C and D cells. Also, the number of electron-dense inclusions and the level of acid phosphatase were higher in smokers than in non-smokers. Coupled with functional heterogeneity the morphologic differences described in this paper suggest that density-separated subpopulations of LAM may represent different stages of differentiation or maturation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0191-3123
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-13
pubmed:dateRevised
2009-6-26
pubmed:meshHeading
pubmed:articleTitle
Subpopulations of human lung alveolar macrophages: ultrastructural features.
pubmed:affiliation
Department of Pathology, Ullevaal Hospital, University of Oslo, Norway.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't