Occupational asthma induced by beat-galactosidase

Galactosidase is generated from Aspergillus oryzae, which is widely used for antidiarrhea medicine to infants. Antibiotics and digestives were reported as a causative allergen inducing occupational asthma. Galatosidase-induced occupational asthma has not been reported yet. A forty-year-old female has suffered from rhinorrhea, sneezing, and nasal obstruction 1 year after handling galactosidase at obstetric and pediatric hospital, and then dyspnea appeared later. Skin prick test with inhalent allergens, beta-galactosidase, and Aspergillus oryzae showed strong positive reaction to beta-galactosidase only. Immunoinhibition test with beta-galactosidase and A. oryzae revealed inhibition to beta-galactosidase only. Bronchial provocation test with beta-galactosidase showed the dual asthmatic response. With these results, we confirmed that the patient has beta-galactosidase-induced occupational asthma and rhinitis.

A preliminary study on factors influencing the outcomes of activities of CK-isozyme / 国际检验医学杂志

Objective To study the false positive of enzyme linked immunoinhibition continuous assays to detect CK-MB in clinic,to reasonably explain the results of detection and to get correctly the project of solving.Methods A total of 125 serum specimen of non-myocardial infarction patients were detected by enzyme linked immunoinhibition continuous assays,in retrospective study.To analyze the factors which made the CK-MB enzymatic activity unit pseudo-rising.Results Total CK-MB enzymatic activity was low in 86 serum specimen of adult patients with non-myocardial infarction,but in the patients with tumor,encephalic infarction and allergic disorder the pseudo-positive ratio of the CK-MB enzymatic activity was high.There were 53 cases, in which CK-MB activity accounted for 6%-21% enzymatic activity of CK, and 6 cases accounted for more than 38% in 59 cases in which the CK-MB activity was more than 5% enzymatic activity of CK.In 38 neonate cases, the enzymatic activity of CK ranged from 145U/L to 1974U/L,In 1 case of neonatal respiratory distress syndrome CK-MB activity accounted for more than 90% enzymatic activity of CK.Another haemolytic sample led to false positive result.Conclusion The phenomenon of enzymatic activity rising in the serum specimen of non-myocardial infarction patients may be caused by the factors of lots CK, CK-BB and AK in serum.Those materials maybe have effects on the action between McAb and M subunit of the CK.Some non-inhibit CK-M and the M subunit with B subunit may participate the enzymatic activity together.Because of the shortcoming of method,the single assay should not be taken as the diagnostic basis.