Skin test reactivity to a locally-prepared house dust extract in patients with perennial asthma

Intradermal skin testing was performed on 100 patients with perennial asthma and 25 control subjects with no history of allergy, using different concentrations of a locally-prepared house dust [HD] extract. Thirty patients [30%] and two controls [8%] gave a positive skin test reaction to the optimal concentrations of 1: 10000 [w/v] of the extract, where the sensitivity. specificity. and efficiency of the test was 85.7%. 91.7%, and 90% respectively. This is she first report regarding evaluation of the locally prepared HD extract

Serum IgE levels among Iraqi Arab blood donors in Baghdad

Total serum 1gE levels of 430 blood donors who ranged in age from 17 to 50 years. were determined using paper radioimmunosorbent test [PRIST]. No influence of sex nor of age on serum 1gE levels was found among the nonsmoker males and females, The mean IgE value for this reference group was 106.2 iu/ml. Smoker males, 31 to 40 years of age had higher IgE values [mean=173.8 iu/ml] The mean value of 106.2 + 2SD i.e. 122.5 iu/ml may be considered as the normal uper limit of serum IgE in our reference population

Hypersensitivity reaction in the lungs of guinea pigs due to intratracheal potassium dichromate exposure

Guinea pigs sensitized with potassium dichromate were challenged by intratracheal injection of the chromium compound. Histological examination of lung tissue after 16[th] and 1,2,3,7 and 14 days correlated with manifestations of delayed type hypersensitivity