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Effect of JP-8 jet fuel on molecular and histological parameters related to acute skin irritation.

Abstract：

:Organic chemicals such as jet fuels and solvents can cause skin irritation after dermal exposure. The molecular responses to these chemicals resulting in acute irritation are not understood well enough to establish safe exposure limits. Male F-344 rats were dermally exposed to JP-8 jet fuel for 1 h using Hill Top Chambers. Whole skin samples were collected at 0, 1, 2, 4, and 6 h after the beginning of the exposures, homogenized, and analyzed for interleukin (IL)-1alpha and inducible nitric oxide synthase (iNOS) protein and nitrite levels. IL-1alpha levels (determined by ELISA) ranged from approximately 11 to 34% above the 0-h samples over the observed time period. At 1 and 2 h, significantly higher (p < 0.05) levels of IL-1alpha were detected when compared to the 0-h samples. Western blot analysis revealed significantly higher (p < 0.05) levels of iNOS at 4 and 6 h compared to 0-h samples. Increases in IL-1alpha and iNOS expression were also observed in the skin immunohistochemically. Nitrite concentrations in skin samples were measured to estimate nitric oxide production. Although nitrite concentrations in the skin increased approximately 6-27% above the 0-h samples over the observed time period, no significant changes in nitrite levels were detected. Pathological changes in the skin following JP-8 exposure were evaluated histologically. Increased numbers of granulocytes were observed infiltrating the skin at 2 h and were more prominent by 6 h. These data show that a 1-h exposure to JP-8 results in a local inflammatory response, which can be detected by changes in molecular and histological parameters.

journal_name

Toxicol Appl Pharmacol

journal_title

Toxicology and applied pharmacology

authors

Kabbur MB,Rogers JV,Gunasekar PG,Garrett CM,Geiss KT,Brinkley WW,McDougal JN

doi

10.1006/taap.2001.9248

subject

Has Abstract

pub_date

2001-08-15 00:00:00

pages

83-8

issue

1

eissn

0041-008X

issn

1096-0333

pii

S0041-008X(01)99248-8

journal_volume

175

pub_type

杂志文章

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