Vol 7 No 1 (1978)

Articles

  • XML | PDF | downloads: 63 | views: 108 | pages: 11-16
    A total number of 67 workers of Teheran battery workshops were investigated for probable lead absorption due to the working with lead storage batteries. Twenty workers with other occupations were selected as control group. Blood and urine analysis were carried out for both groups. Lead content of the urine in about 95.5% of the subjects was below 10 μg/100 ml. Two subjects showed higher concentrations of lead in urine. In one subject other analyses revealed lead intoxication. In the other subject no signs of lead poisoning were found. The intoxicated person was a worker who used to break old batteries and smelt their lead plates for many years and his intoxication was not presumably sourced from working in the battery workshop. No evidence was found to support the increase of lead absorption in these workers.
  • XML | PDF | downloads: 71 | views: 107 | pages: 17-24
    968 male workers employed in five vegetable oil refineries were studied to discover the effects of age, length of employment and smoking habit on the prevalence of hypertension. The results obtained indicate that the overall prevalence of hypertension is 6.61% showing a direct relationship to the age. Considering the length of employment only, in the workers aged 50 and above, there is also a direct relation between the length of employment and prevalence of hypertension. Furthermore, the results show that not only smoking causes elevation of blood pressure, but the number of cigarettes smoked per day is also important, i.e. the workers who smoke more have a higher prevalence of abnormal pressure.
  • XML | PDF | downloads: 124 | views: 147 | pages: 25-34
    Human infection with several intestinal helminthes especially soil-transmitted species is very prevalent in most parts of Iran (1, 2). Attempts made in the past decade by using systematic epidemiological surveys have indicated the true distribution and prevalence of these infections in most parts of the country. In this paper on soil-transmitted helminthes collected during a longitudinal health and morbidity survey in a rural area of Gilan province in the north of Iran and along the Caspian Sea are presented.
  • XML | PDF | downloads: 84 | views: 74 | pages: 35-52

    The antimicrobial susceptibility of 118 S.typhimurium and 84 enteropathogenic E. coli isolated from human gastero-enteritis cases were examined. More than 25 different resistant patterns could be identified. Most of the strains of S. typhimurium possessed R-factors bearing resistance to ampicillin, chloromycetin, kanamycin, streptomycin, sulfonamide and tetracycline. More than 50% and more than 6% were resistant to furazolidon and nalidixic acid respectively. But they all were sensitive to gentamicin. The majority of S. typhimurium strains were harboring resistant determinats but not the RTF plasmid. Almost all the resistances could be mobilized using fi-, I-like and fi+, F-like transfer factor except for K-resistance. The E.coli strains behaved differently, that is: the majority of the strains showed resistances to chloromycetin, streptomycin, sulfomamide and tetramycine. They were all sensitive to gentamicin, furazoldon and nalidixic acid. And also the majority of the strains were harbouring both, resistant determinates and RTF plasmid. Among the non-rtansferable and non-mobilizable resistances, streptomycin-sulfonamide determinants were the most common ones.