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Biomedical subjects

N Turcić

Publications and source records attributed to N Turcić.

4 recordsLinked to original sources

[Monitoring of pulmonary ventilation function and respiratory symptoms in cotton-processing workers].

A follow-up study in cotton workers (35 female and 31 male) was performed ten years after the original cross-sectional study. The prevalence of byssinosis considerably increased during the follow-up study in female (22.9%; 42.9%) and in male (25.8%; 51.6%) workers. Similarly, the prevalence of almost all respiratory symptoms was significantly higher during the follow-up study than at the time of the initial study. Significant acute reductions of FVC and FEV1 during the work shift were recorded in both surveys. The mean annual decline in ventilatory capacity was greater than expected for both female (FVC: -0.036 L/year; FEV1: -0.059 L/year) and male workers (FVC: -0.059 L/year; FEV1: -0.068 L/year). The mean total airborne dust concentration was 3.95 mg/m3 with an average respirable dust concentration of 0.97 mg/m3. Our study demonstrated an association between exposure to cotton dust and increasing prevalence of respiratory symptoms and progressive impairment of ventilatory capacity.

Adult

[Immunologic status, respiratory symptoms and ventilatory function in soybean-processing workers].

Immunological and respiratory findings were studied in a group of 19 male soy-bean workers. A group of 31 control workers were examined for the prevalence of respiratory symptoms and 20 control workers were included in the immunological study. All soy-bean workers had positive immediate skin reaction to soy-bean dust, 18 to soy antigen after separation from oil, three to lecithin antigen and only one to soy oil. Only three soy-bean workers had increased levels of specific IgE. Among 20 control workers, 19 reacted to soy-bean dust, 20 to soy after separation of oil and none to soy oil. One demonstrated increased specific IgE. The prevalence of chronic respiratory symptoms was considerably higher in exposed than in control workers, being statistically different for dyspnea (P less than 0.01). The statistically significant acute reductions in ventilatory capacity were particularly pronounced for FEF50 (-4.7%) and FEF25 (-9.4%). The mean ventilatory capacity values before shift on Monday were significantly lower than those on the following Friday for FVC, FEF50 and FEF25. There was no difference in ventilatory capacity between soy-bean workers with positive and those with negative skin tests to house dust or between those with increased and those with normal IgE serum levels. A water soluble extract of soy-bean dust was also assayed in organ bath containing guinea pig trachea. This model showed the extract to be highly reactive causing a dose-related constriction of airway smooth muscle. Our data suggest that immunologic sensitization to soy-bean products is very frequent. In addition to possible humoral contribution to respiratory disorders, soy dust seems to directly affect airway smooth muscle.

Adult

[Respiratory function in fur-processing workers].

Forty women employed as furriers in the fur processing industry and a group of 31 control workers were examined. A higher prevalence of chronic respiratory symptoms was found among the furriers than among the controls. The differences were statistically significant for chronic cough and sinusitis (P less than 0.01). The highest prevalence in furriers was found for chronic cough (50%), sinusitis (30%), followed by dyspnea (25%), nasal catarrh (20%) and occupational asthma (5%). A large number of workers complained of acute symptoms during work shift. Statistically significant mean acute reductions in ventilatory capacity over the workshift were recorded for FVC (-4.1%), FEV1 (-5.2%) and FEV50 (-6.3%). The furriers demonstrated significantly lower mean measured pre-shift values for FVC and FEV25 (P less than 0.05) when compared with the predicted. Pre-shift administration of 40 mg of Intal considerably diminished acute ventilatory capacity over the work shift.

Adult