[Symptoms of atopy in persons exposed to chronic immunosuppression of polycyclic aromatic hydrocarbons].

The frequency of the atopy symptoms was estimated in 126 coke oven workers chronically exposed to polycyclic aromatic hydrocarbons (PAHs). The assessment was based on questionnaire, point skin tests with the allergens of dust, feathers, mould grass as well as on the measurements of total blood serum IgE concentration. The control group was consisted of 75 men, workers of cold rolling mill division where the environmental conditions were much better.

Humoral immunosuppression in men exposed to polycyclic aromatic hydrocarbons and related carcinogens in polluted environments.

We evaluated humoral immunity by measuring IgG, IgA, IgM, and IgE concentrations in 274 male workers in an iron foundry in Cracow, Poland. There were two groups: 199 coke oven workers and 76 cold-rolling mill workers. The groups were similar with respect to age, length of work (average 15 years), and smoking habits.

Comparison of results derived from follow-up examination of respiratory systems in chosen groups of metallurgists.

In a 16.5-year follow-up study of the steel industry we investigated the relation of chronic occupational exposure to the changes of ventilatory efficiency and to the frequency of chronic bronchitis (Chronic Obstructive Pulmonary Disease--COPD) in a group of 65 men working in the harmful environment of a Coking Plant (CP). The reference group comprised 34 employees of Cold Rolling Mill (CRM) working in favorable hygienic conditions.

[Prospective studies of the respiratory system in coke plant workers].

In standardized conditions of 24 hours clinical hospitalisation the group of men employed as cooking battery staff was examined twice in a 16 years interval. The examined men worked all the time at the same workshops and were exposed to harmful chemical and physical agents. All the subjects underwent routine medical examination, spirometric tests and the questionnaire of Medical Research Council extended to a smoking habit was gathered for each of men.

[Risk factors of ischemic heart disease in various occupational groups. II. Complex analysis of risk factors].

Four hundred four men aged 30 to 59 years, belonging to one of 4 occupational groups were investigated in a standard clinical conditions. Two from those groups were characteristic for steel mill professions: 121 blast furnace workers; exerting strenuous physical effort and working in hot microclimate. 131 operators (the second group) performed work in comfort microclimate conditions not demanding much effort.