While defective CuZnSOD activity observed in all patients groups was expected to cause an increase in lipid peroxidation indicated by high MDA levels in these patients groups, the fact that MDA levels were not different from those of controls in all patient groups indicates that other components of anti-oxidant defence system preserve their functions in these patients. On the other hand, statistically significant difference between all patients groups and controls with respect to trace elements was only observed in allergic rhinitis patients who had higher levels of Cu than those of controls.

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Background: Oral allergy syndrome (OAS) is a unique allergic reaction to food, which is caused by cross-reactivity between proteins in fresh fruits or vegetables and pollens. Predisposing factors for OAS are not well known in patients with seasonal allergic rhinitis. Objective: Identify the probable risk factors for OAS in patients with seasonal allergic rhinitis. Study Design: One hundred and eleven consecutive patients with seasonal allergic rhinitis were included. Patients were evaluated in terms of symptom scores and skin prick test positivity scores. Prick-by-prick tests with the fresh fruit or vegetable were carried out in patients who describe oral allergy syndrome. Patients with OAS and without OAS were compared statistically. Results: OAS was more frequent in females than males (p=0.01). Odds ratio for gender (male/female) was 3.80 (95% confidence interval: 1.28-11.32). Within nasal symptoms, only nasal itching was related with OAS (P<0.05). The logistic regression analysis revealed a significant association between the prevalence of the OAS and age, asthma, TSS and TSTP (p<0.05). Conclusion: Not all patients with seasonal allergic rhinitis develop OAS. It is likely that, patients with OAS have some additional risk factors other than atopy.

The analysis of our data over a 30-year period confirmed that SCIT with inhalant allergens conducted strictly according to the standard protocols and when administrated by experienced staff is a safe method of treatment with only a few side-effects.

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