RGD Reference Report - The aldosterone-mineralocorticoid receptor pathway exerts anti-inflammatory effects in endotoxin-induced uveitis. - Rat Genome Database

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The aldosterone-mineralocorticoid receptor pathway exerts anti-inflammatory effects in endotoxin-induced uveitis.

Authors: Bousquet, E  Zhao, M  Ly, A  Leroux Les Jardins, G  Goldenberg, B  Naud, MC  Jonet, L  Besson-Lescure, B  Jaisser, F  Farman, N  De Kozak, Y  Behar-Cohen, F 
Citation: Bousquet E, etal., PLoS One. 2012;7(11):e49036. doi: 10.1371/journal.pone.0049036. Epub 2012 Nov 9.
RGD ID: 7174735
Pubmed: PMID:23152847   (View Abstract at PubMed)
PMCID: PMC3494666   (View Article at PubMed Central)
DOI: DOI:10.1371/journal.pone.0049036   (Journal Full-text)

We have previously shown that the eye is a mineralocorticoid-sensitive organ and we now question the role of mineralocorticoid receptor (MR) in ocular inflammation. The endotoxin-induced uveitis (EIU), a rat model of human intraocular inflammation, was induced by systemic administration of lipopolysaccharide (LPS). Evaluations were made 6 and 24 hours after intraocular injection of aldosterone (simultaneous to LPS injection). Three hours after onset of EIU, the MR and the glucocorticoid metabolizing enzyme 11-beta hydroxysteroid dehydrogenase type 2 (11beta-HSD2) expression were down-regulated in iris/ciliary body and the corticosterone concentration was increased in aqueous humor, altering the normal MR/glucocorticoid receptor (GR) balance. At 24 hours, the GR expression was also decreased. In EIU, aldosterone reduced the intensity of clinical inflammation in a dose-dependent manner. The clinical benefit of aldosterone was abrogated in the presence of the MR antagonist (RU26752) and only partially with the GR antagonist (RU38486). Aldosterone reduced the release of inflammatory mediators (6 and 24 hours: TNF-alpha, IFN-gamma, MIP-1alpha) in aqueous humor and the number of activated microglia/macrophages. Aldosterone partly prevented the uveitis-induced MR down-regulation. These results suggest that MR expression and activation in iris/ciliary body could protect the ocular structures against damages induced by EIU.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
uveitis  ISONr3c1 (Rattus norvegicus)7174735; 7174735mRNA more ...RGD 
uveitis  IEP 7174735mRNA more ...RGD 

Objects Annotated

Genes (Rattus norvegicus)
Nr3c1  (nuclear receptor subfamily 3, group C, member 1)

Genes (Mus musculus)
Nr3c1  (nuclear receptor subfamily 3, group C, member 1)

Genes (Homo sapiens)
NR3C1  (nuclear receptor subfamily 3 group C member 1)


Additional Information