title: Complementary DNA microarray analysis in acute lung injury induced by lipopolysaccharide and diesel exhaust particles.
abstract: We have recently shown that diesel exhaust particles (DEP) synergistically enhance acute lung injury related to lipopoly-saccharide (LPS) in mice. The present study used cDNA microarray to elucidate the effects of DEP on the global pattern of LPS-related gene expression in the murine lung. The number of genes upregulated >/=2-fold as compared with their expression levels in the vehicle group was greater in the LPS group than in other groups, but treatment with DEP and LPS dramatically increased the number of the genes upregulated >/=6-fold. In particular, gene expression of metallothionein-1 and -2, S100 calcium-binding protein A9, lipocalin 2, and small inducible cytokine B family member 10 was higher by >/=20-fold in the DEP + LPS group than in the vehicle group. These results were concomitant with those obtained by real-time reverse transcription-polymerase chain reaction analysis in the overall trend. Our findings suggest that intense, focused expression of genes such as S100 calcium-binding protein A9, lipocalin 2, and small inducible cytokine B family member 10 relates to the synergistic aggravation of acute lung injury by LPS and DEP rather than weak, broad expression of various genes by exposure of LPS alone.
authors.affiliation: Pathophysiology Research Team, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan.
authors.forename: Rie
authors.initials: R
authors.lastname: Yanagisawa
authors.forename: Hirohisa
authors.initials: H
authors.lastname: Takano
authors.forename: Ken-ichiro
authors.initials: K
authors.lastname: Inoue
authors.forename: Takamichi
authors.initials: T
authors.lastname: Ichinose
authors.forename: Sei-ichi
authors.initials: S
authors.lastname: Yoshida
authors.forename: Kaori
authors.initials: K
authors.lastname: Sadakane
authors.forename: Ken
authors.initials: K
authors.lastname: Takeda
authors.forename: Shin
authors.initials: S
authors.lastname: Yoshino
authors.forename: Kouya
authors.initials: K
authors.lastname: Yamaki
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Kumagai
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Yoshikawa
mesh_terms: D000818:Animals; D018076:DNA, Complementary / Q000032:analysis*; D004391:Dust; D020869:Gene Expression Profiling; D008070:Lipopolysaccharides / Q000009:adverse effects*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D020411:Oligonucleotide Array Sequence Analysis; D012333:RNA, Messenger / Q000032:analysis; D012128:Respiratory Distress Syndrome / Q000209:etiology* / Q000473:pathology; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015854:Up-Regulation; D001335:Vehicle Emissions / Q000009:adverse effects*
chemical_list: D018076:DNA, Complementary; D004391:Dust; D008070:Lipopolysaccharides; D012333:RNA, Messenger; D001335:Vehicle Emissions