Does mannose-binding lectin have a role in adult Turkish patients with nasal polyposis?
OBJECTIVE
Mannose-binding lectin is an important component of innate immunity; it initiates the lectin pathway of complement activation critical for innate immunity. Failure of local innate defenses may result in defective responses that lead to the persistent carriage of microorganisms or ongoing inflammation. This study investigated the role of mannose-binding lectin levels and the frequency of the 6 functional mannose-binding lectin polymorphisms in Turkish individuals with nasal polyposis.


METHODS
A case-control study.


METHODS
University hospital.


METHODS
Fifty-one patients with nasal polyposis and 53 healthy controls were enrolled. Serum mannose-binding lectin levels were obtained by enzyme-linked immunosorbent assay (ELISA) using the mannose-binding lectin oligomer ELISA kit. Mannose-binding lectin 2 genotyping was performed by isolating the genomic DNA from leukocytes.


RESULTS
Mean mannose-binding lectin levels were 1693.2 and 1887.8 in the patient and control group, respectively. Although mannose-binding lectin levels were lower in the patient group, the difference was not statistically significant (P > .05). No overall association was observed between the mannose-binding lectin genotype and susceptibility to nasal polyposis (95% confidence interval = 0.716-4.389, odds ratio = 1.773). The mutant allele frequencies of the 3 structural polymorphisms did not differ significantly between the nasal polyposis patients and the controls (P = .659).


CONCLUSIONS
Mannose-binding lectins are not involved in the pathogenesis of nasal polyposis in adult Turkish patients, but additional research is needed for further comment.
Department of Otolaryngology Head & Neck Surgery, Atatürk Research and Training Hospital, Izmir, Turkey. erd2eren@yahoo.com
Erdem
E
Eren
Rasit
R
Midilli
Emin
E
Karaca
Hüseyin
H
Onay
Bülent
B
Karci
Cihangir
C
Ozkinay
D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D037601:Mannose-Binding Lectin / Q000097:blood / Q000235:genetics / Q000502:physiology*; D008875:Middle Aged; D009298:Nasal Polyps / Q000097:blood / Q000209:etiology* / Q000235:genetics; D011110:Polymorphism, Genetic; D014421:Turkey
D037601:Mannose-Binding Lectin