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Correlation between Ocular Demodex Infestation and Serum Immunoreactivity to Bacillus Proteins in Patients with Facial Rosacea.

Ophthalmology. 2010 Jan 14;

Authors: Li J, O'Reilly N, Sheha H, Katz R, Raju VK, Kavanagh K, Tseng SC

PURPOSE: To investigate correlation between ocular Demodex infestation and serum. DESIGN: A prospective study to correlate clinical findings with laboratory data. PARTICIPANTS: We consecutively enrolled 59 patients: 34 men and 25 women with a mean age of 60.4+/-17.6 years (range, 17-93). METHODS: Demodex counting was performed based on lash sampling. Serum immunoreactivity to two 62-kDa and 83-kDa proteins derived from B oleronius was determined by Western blot analysis. Facial rosacea, lid margin, and ocular surface inflammation were documented by photography and graded in a masked fashion. MAIN OUTCOME MEASURES: Statistical significance based on correlative analyses of clinical and laboratory data. RESULTS: These 59 patients were age matched, but not gender matched, regarding serum immunoreactivity, ocular Demodex infestation, or facial rosacea. There was a significant correlation between serum immunoreactivity and facial rosacea (P = 0.009), lid margin inflammation (P = 0.040), and ocular Demodex infestation (P = 0.048), but not inferior bulbar conjunctival inflammation (P = 0.573). The Demodex count was significantly higher in patients with positive facial rosacea (6.6+/-9.0 vs. 1.9+/-2.2; P = 0.014). There was a significant correlation of facial rosacea with lid margin inflammation (P = 0.016), but not with inferior bulbar conjunctival inflammation (P = 0.728). Ocular Demodex infestation was less prevalent in patients with aqueous tear-deficiency dry eye than those without (7/38 vs. 12/21; P = 0.002). CONCLUSIONS: The strong correlation provides a better understanding of comorbidity between Demodex mites and their symbiotic B oleronius in facial rosacea and blepharitis. Treatments directed to both warrant future investigation. FINANCIAL DISCLOSURE(S): Proprietary or commercial disclosure may be found after the references.

PMID: 20079929 [PubMed - as supplied by publisher]

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?tmpl=NoSidebarfile&db=PubMed&cmd=Retrieve&list_uids=20079929&dopt=Abstract = URL to article

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