Biological and environmental monitoring of lead and exposure in the automobile industry

Background and Aims: Soldering is one of the most common activities in metal industries. Lead is used in soldering process and has considerable toxic effects. The aim of this study, therefore, was biological and environmental monitoring and investigating the effects of exposure to lead in soldering unit workers at an automobile industry.     Methods: In order to evaluate biological and environmental exposure to lead, a case-control study was accomplished on 60 workers in soldering unit (case group) and 60 workers in official unit (control group). Demographical and medical information were gained by a questionnaire. Blood samples were collected and analyzed using the NIOSH 8003 method and Atomic Absorption Spectroscopy (AAS) respectively and air samples were collected and analyzed using the NIOSH 7300 method and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) respectively.     Results: The obtained results shown that, with the increasing of age and work experience, the blood lead level is also increased.(p=0.033)(p=0.003) In exposed group, the blood lead mean value was significantly higher than the control group (p-value<0.001). Prevalence of digestive, nervous, respiratory, dermal, kidney disorders, anemia diseases, and disorder in bone metabolism in exposed group were higher than the control group. The amount of lead level was negatively correlated with hemoglobin (r=-0.287;p=0.026) and hematocrit (r=-0.336;p=0.009) but There was no significant correlation between air and blood lead level.     Conclusion: The blood lead level may be increased in lead exposure due absence of personal protective equipment and poor personal hygiene. Increased lead level in blood can be resulted to various diseases and decrease in hemoglobin and hematocrit levels in blood

Hiv-related knowledge and stigma among the general population in the southeast of iran

Background: HIV-related stigma is a barrier to effective HIV responses among people living with HIV (PLHIV). Objectives: The current study aimed at measuring HIV-related stigma, and its associated factors among the general population in the Southeast of Iran. Methods: The current cross-sectional study was conducted on a convenience sample of 900 individuals in Kerman, Southeast of Iran, from July to September 2016. Data was collected using a self-administered questionnaire, including (I) demographic and background characteristics; (II) HIV-related stigma; and (III) HIV-related knowledge. Data were analyzed with SPSS version 20 using descriptive statistics, as well as bivariable and multivariable linear regressions. Results: Low, moderate, and high levels of stigmatizing attitudes toward PLHIV were reported by 39.1, 57.8, and 3.1 of the participants, respectively. Female sex(beta = 0.33, P value = 0.01) and those not having a history of HIV testing (beta = 0.45, P value < 0.001) had, on average, higher levels of stigmatizing attitudes, while those with a higher level of education (beta =-0.97, P value < 0.001) had, on average, lower levels of stigmatizing attitudes. Conclusions: Gender-sensitive educational interventions need to be developed to reduce the negative attitude towards PLHIV in Iran. © 2020, Author(s)