RGD Reference Report - A genetic model of chronic rhinosinusitis-associated olfactory inflammation reveals reversible functional impairment and dramatic neuroepithelial reorganization.

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A genetic model of chronic rhinosinusitis-associated olfactory inflammation reveals reversible functional impairment and dramatic neuroepithelial reorganization.
Authors:	Lane, AP Turner, J May, L Reed, R
Citation:	Lane AP, etal., J Neurosci. 2010 Feb 10;30(6):2324-9. doi: 10.1523/JNEUROSCI.4507-09.2010.
RGD ID:	7401236
Pubmed:	PMID:20147558 (View Abstract at PubMed)
PMCID:	PMC2957830 (View Article at PubMed Central)
DOI:	DOI:10.1523/JNEUROSCI.4507-09.2010 (Journal Full-text)
Inflammatory sinus and nasal disease is a common cause of human olfactory loss. To explore the mechanisms underlying rhinosinusitis-associated olfactory loss, we have generated a transgenic mouse model of olfactory inflammation, in which tumor necrosis factor alpha (TNF-alpha) expression is induced in a temporally controlled manner specifically within the olfactory epithelium (OE). Like the human disease, TNF-alpha expression leads to a progressive infiltration of inflammatory cells into the OE. Using this model, we have defined specific phases of the pathologic process. An initial loss of sensation without significant disruption is observed, followed by a striking reorganization of the sensory neuroepithelium. An inflamed and disrupted state is sustained chronically by continued induction of cytokine expression. After prolonged maintenance in a deficient state, there is a dramatic recovery of function and a normal histologic appearance when TNF-alpha expression is extinguished. Although obstruction of airflow is also a contributing factor in human rhinosinusitis, this in vivo model demonstrates for the first time that direct effects of inflammation on OE structure and function are important mechanisms of olfactory dysfunction. These features mimic essential aspects of chronic rhinosinusitis-associated olfactory loss, and illuminate underlying cellular and molecular aspects of the disease. This manipulable model also serves as a platform for developing novel therapeutic interventions.

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Term	Qualifier	Evidence	With	Reference	Notes	Source	Original Reference(s)
Rhinosinusitis		ISO	Tnf (Mus musculus)	7401236; 7401236		RGD
Rhinosinusitis		IDA		7401236		RGD

Objects Annotated

Genes (Rattus norvegicus)

Tnf (tumor necrosis factor)

Genes (Mus musculus)

Tnf (tumor necrosis factor)

Genes (Homo sapiens)

TNF (tumor necrosis factor)

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A genetic model of chronic rhinosinusitis-associated olfactory inflammation reveals reversible functional impairment and dramatic neuroepithelial reorganization.