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Effects of granulocyte colony-stimulating factor (G-CSF) on bleomycin-induced lung injury of varying severity.

Authors: Adachi, K  Suzuki, M  Sugimoto, T  Yorozu, K  Takai, H  Uetsuka, K  Nakayama, H  Doi, K 
Citation: Adachi K, etal., Toxicol Pathol. 2003 Nov-Dec;31(6):665-73.
Pubmed: (View Article at PubMed) PMID:14585735

We evaluated the effects of granulocyte colony-stimulating factor (G-CSF) on bleomycin (BLM)-induced lung injury that developed diffuse alveolar damage and subsequent pulmonary fibrosis (PF) of varying severity. G-CSF (100 microg/kg/day) was administered subcutaneously to BLM (0.2, 20, 2,000 microg)-treated or -untreated rats for 3 or 14 days. In the BLM 0.2 microg group, slight alveolar mononuclear cell infiltration was observed, although PF was not noted. In the BLM 20-microg and 2,000-microg groups, diffuse alveolar damage along with neutrophil infiltration and subsequent PF were observed. In the saline + G-CSF group and BLM 0.2 microg + G-CSF group, a marked increase in the number of alkaline phosphatase (ALP)-positive neutrophils was noted in the alveolar capillaries, although there was neither neutrophil infiltration in alveoli nor exacerbation of lung injury. In the BLM 20 microg + G-CSF and BLM 2,000 microg + G-CSF groups, an exacerbation of lung injury along with an increase in the number of ALP-positive neutrophils in the alveoli was observed. These results indicate that the administration of G-CSF to rats with slight lung injury bearing no PF does not exacerbate the lung injury. The exacerbating effects of G-CSF seem to be associated not only with the marked infiltration of activated neutrophils but also with the severity of underlying lung injury.

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RGD Object Information
RGD ID: 11039441
Created: 2016-03-03
Species: All species
Last Modified: 2016-03-03
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.