RGD Reference Report - Anti-inflammatory effect of a selective IkappaB kinase-beta inhibitor in rat lung in response to LPS and cigarette smoke. - Rat Genome Database

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Anti-inflammatory effect of a selective IkappaB kinase-beta inhibitor in rat lung in response to LPS and cigarette smoke.

Authors: Rajendrasozhan, S  Hwang, JW  Yao, H  Kishore, N  Rahman, I 
Citation: Rajendrasozhan S, etal., Pulm Pharmacol Ther. 2010 Jun;23(3):172-81. doi: 10.1016/j.pupt.2010.01.002. Epub 2010 Jan 18.
RGD ID: 7495767
Pubmed: PMID:20080200   (View Abstract at PubMed)
PMCID: PMC2850968   (View Article at PubMed Central)
DOI: DOI:10.1016/j.pupt.2010.01.002   (Journal Full-text)

RATIONALE: IkappaB kinase (IKK) activates NF-kappaB which plays a pivotal role in pro-inflammatory response in the lung. NF-kappaB has been shown to be activated in alveolar macrophages and peripheral lungs of smokers and patients with chronic obstructive pulmonary disease. We investigated the anti-inflammatory effect of a highly selective and novel IKKbeta/IKK2 inhibitor, PHA-408 [8-(5-chloro-2-(4-methylpiperazin-1-yl)isonicotinamido)-1-(4-fluorophenyl)-4,5-di hydro-1H-benzo[gamma]indazole-3-carboxamide], in lungs of rat in vivo. METHODS: Adult Sprague-Dawley rats were administered orally with PHA-408 (15 and 45 mg/kg) daily for 3 days and exposed to LPS aerosol (once on day 3, 2 h post-last PHA-408 administration) or cigarette smoke (CS; 2h after PHA-408 administration for 3 days). Animals were sacrificed at 1, 4 and 24 h after the last exposure, and lung inflammatory response and NF-kappaB activation were measured. RESULTS: Oral administration of IKKbeta/IKK2 inhibitor PHA-408 significantly inhibited LPS- and CS-mediated neutrophil influx in bronchoalveolar lavage (BAL) fluid of rats. The levels of pro-inflammatory mediators in BAL fluid (CINC-1) and lungs (IL-6, TNF-alpha, IL-1beta and GM-CSF) were also reduced by PHA-408 administration in response to LPS or CS exposures. The reduced pro-inflammatory response in PHA-408-administered rats was associated with decreased nuclear translocation and DNA binding activity of NF-kappaB in response to LPS or CS. CONCLUSION: These results suggest that IKKbeta/IKK2 inhibitor PHA-408 is a powerful anti-inflammatory agent against LPS- and CS-mediated lung inflammation.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
pneumonia treatmentISOIkbkb (Rattus norvegicus)7495767; 7495767 RGD 
pneumonia treatmentIMP 7495767 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ikbkb  (inhibitor of nuclear factor kappa B kinase subunit beta)

Genes (Mus musculus)
Ikbkb  (inhibitor of kappaB kinase beta)

Genes (Homo sapiens)
IKBKB  (inhibitor of nuclear factor kappa B kinase subunit beta)


Additional Information