RGD Reference Report - Bacterial conjunctivitis in Muc1 null mice. - Rat Genome Database

Send us a Message
Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   
Search RGD Grant Resources Citing RGD About Us Contact Us
Genes Variants Community Projects QTLs Strains Markers Genome Information Ontologies Cell Lines References Download Submit Data
OntoMate (Literature Search) JBrowse (Genome Browser) Synteny Browser (VCMap) Variant Visualizer Multi-Ontology Enrichment (MOET) Gene-Ortholog Location Finder (GOLF) InterViewer (Protein-Protein Interactions) PhenoMiner (Quatitative Phenotypes) Gene Annotator OLGA (Gene List Generator) AllianceMine GViewer (Genome Viewer)
Aging & Age-Related Disease Cancer & Neoplastic Disease Cardiovascular Disease Coronavirus Disease Developmental Disease Diabetes Hematologic Disease Immune & Inflammatory Disease Infectious Disease Liver Disease Neurological Disease Obesity & Metabolic Syndrome Renal Disease Respiratory Disease Sensory Organ Disease
Find Models Genetic Models Autism Models Rat PhenoMiner (Quantitative Phenotypes) Chinchilla PhenoMiner Expected Ranges (Quantitative Phenotype) PhenoMiner Term Comparison Hybrid Rat Diversity Panel Phenotypes Phenotypes in Other Animal Models Animal Husbandry Strain Medical Records Phylogenetics Strain Availability Calendar Rats 101 Submissions Photo Archive
Pathways
Rat Community Forum Directory of Rat Laboratories Video Tutorials News RGD Publications RGD Presentations Archive Nomenclature Guidelines Resource Links Laboratory Resources Employment Resources
Advanced Search (OLGA)

Bacterial conjunctivitis in Muc1 null mice.

Authors: Kardon, R  Price, RE  Julian, J  Lagow, E  Tseng, SC  Gendler, SJ  Carson, DD 
Citation: Kardon R, etal., Invest Ophthalmol Vis Sci. 1999 Jun;40(7):1328-35.
RGD ID: 7349379
Pubmed: PMID:10359313   (View Abstract at PubMed)

PURPOSE: In contrast to wild-type mice, genetically engineered Mucin1 (Muc1) null animals display a marked propensity for development of blepharitis and conjunctivitis. Molecular approaches confirmed the presence of Muc1 mRNA and protein in the conjunctival tissue of wild-type mice and identified the bacterial species in Muc1 null symptomatic mice. METHODS: Muc1 null animals housed in a conventional facility were examined for visually apparent inflammation of the eye and surrounding tissue. Blood taken from overtly affected animals was assayed for antibodies to common murine viral agents. Swabs of infected eyes and whole eye preparations were used to detect and speciate bacterial pathogens. Frozen sections of whole eye, lid margin, and Harderian gland were immunostained with antibodies to Muc1 and cytokeratin 14, both epithelial cell markers. Northern blot analysis and reverse transcription-polymerase chain reaction (RT-PCR) were performed on RNA isolated from conjunctiva and Harderian gland of wild-type mice to compare relative levels of transcript. RESULTS: Student's unpaired t-test performed on the eye inflammation frequency of Muc1 null mice confirmed a statistical significance (P < 0.01) when compared to wild-type background animals housed in the same room. Analysis of blood samples from affected Muc1 null animals detected no common murine viral pathogens. Bacterial analysis of conjunctival swabs and whole eye preparations demonstrated the presence of coagulase-negative Staphylococcus, Streptococcus type alpha, and Corynebacterium group G2. Muc1 antibody staining of wild-type sections revealed the presence of Muc1 on conjunctival goblet and non-goblet cells and on the epithelium of the Harderian gland. Serial sections stained with cytokeratin 14 antibody confirmed the epithelial nature of cells expressing the Muc1 protein. RNA from conjunctiva and Harderian gland subjected to RT-PCR and northern blot analysis showed an abundance of Muc1 transcript in these tissues. CONCLUSIONS: Muc1 mRNA and protein are present in murine conjunctival and Harderian gland epithelia. Animals lacking Muc1 mRNA and protein are predisposed to developing eye inflammation when compared to wild-type animals with an intact Muc1 gene. Muc1 appears to play a critical protective role at the ocular surface, presumably by acting as a barrier to infection by certain bacterial strains.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
MUC1Humanbacterial conjunctivitis  ISOMuc1 (Mus musculus) RGD 
Muc1Ratbacterial conjunctivitis  ISOMuc1 (Mus musculus) RGD 
Muc1Mousebacterial conjunctivitis  IMP  RGD 
MUC1Humanblepharitis  ISOMuc1 (Mus musculus) RGD 
Muc1Ratblepharitis  ISOMuc1 (Mus musculus) RGD 
Muc1Mouseblepharitis  IMP  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Muc1  (mucin 1, cell surface associated)

Genes (Mus musculus)
Muc1  (mucin 1, transmembrane)

Genes (Homo sapiens)
MUC1  (mucin 1, cell surface associated)


Additional Information