Health and working conditions in carpenter's workshops in Armenia (Colombia)

Epidemiological Correlates of Well Being at Work Place and Hazards Identification and Risk assessment Amongst Saw Mill Workers in Anand, Gujarat

Context:

The nature of the work in saw mills carries a huge risk as the workers are exposed to various life-threatening hazards.

Aims:

This study was conducted to know the “Work place Wellbeing” of the saw mill workers, occupational Hazards identification and Risk assessment (HIRA) including hazard communication, occupational accidents, injuries and diseases.

Settings and Design:

The study was a cross sectional study amongst workers of saw mills.

Methods and Material:

A total of 219 saw mill workers were interviewed. “Work place wellbeing”, was studied by using the “Workplace Wellbeing Questionnaire - Black Dog Institute” which includes four areas of workplace wellbeing viz. (1) Work satisfaction, (2) Organizational respect for the employee, (3) Employer care, and (4) Intrusion of work into private life. Reliability analysis was done and Cronbach's alpha was found. Association was found between the work place wellbeing and other demographic and occupational variables.

Statistical Analysis Used:

Proportions and Mann–Whitney U test.

Results:

Scores of all the participants fall in the medium scale for “work satisfaction”. For “respect”, 93.6% fall in the medium scale. In “employer care” 97.7% fall in medium category. All the workers scored in the medium scale for the “intrusion in private life”. None of the scores were in low scale for any domain. Injury as an event was reported by 8.22%. Specific disease prevalence was highest for back ache as 72.1%. Hazard communication was done in 40% workers.

Conclusions:

We found poor working positions at work place and they did suffer from various medical morbidities at the work place.

Early detection of lung cancer potential among Egyptian wood workers

Wood dust is known to be a human carcinogen, with a considerable risk of lung cancer. The increased cancer risk is likely induced through its genotoxic effects resulting from oxidative DNA damage. This study aimed at assessing the genotoxicity of wood dust and demonstrating the role of sputum PCR as a screening tool for early prediction of lung cancer among wood workers. The study was carried out in the carpentry section of a modernized factory involved with the manufacture of wooden furniture in Greater Cairo, Egypt. Environmental assessment of respirable wood dust concentrations was done. Frequency of chromosomal aberrations (CA%) and sister chromatid exchanges (SCE%) in peripheral blood lymphocytes (PBL) was assessed and comet assays were performed in samples from among the study population (n = 86). Levels of superoxide dismutase (SOD) and glutathione peroxidase (GPx) enzymes were measured. The polymerase chain reaction (PCR) was used to study hypermethylation of p16 and ̸or O6-methylguanine-DNA methyltransferase (MGMT) gene promoters in sputum DNA. The concentrations of respirable wood dust exceeded the Egyptian and international permissible limits with highest levels generated by sawing operations. Laboratory investigations revealed statistically significantly higher frequencies of CA and SCE as well as increased comet tail length associated with significant decrement in the levels of SOD and GPx among exposed group. A statistically significant elevation in the extent of hypermethylation was detected for the p16 and MGMT gene promoters in the sputum DNA of studied wood workers. The study results support the conclusion that prolonged unprotected occupational exposure to wood dust is associated with possible genotoxicity and oxidative stress that might raise the risk for carcinogenesis including lung cancer.

Association between Occupational Exposure to Wood Dust and Cancer: A Systematic Review and Meta-Analysis

Objective

To perform a systematic review to analyze the association between occupational exposure to wood dust and cancer.

Methods

A systematic literature search of entries made in the MEDLINE-PubMed database between 1957 and 2013 was conducted to identify studies that had assessed the relationship between occupational exposure to wood dust and different types of cancer. A meta-analysis of selected case-control and cohort studies was subsequently performed.

Results

A total of 114 studies were identified and 70 were selected for review. Of these, 42 studies focused on the relationship between wood dust and nasal cancer (n = 22), lung cancer (n = 11), and other types of cancer (n = 9). Low-to-moderate quality evidence that wood dust acts as a carcinogen was obtained, and a stronger association between wood dust and nasal adenocarcinoma was observed. A lesser association between wood dust exposure and lung cancer was also observed. Several studies suggested that there is a relationship between wood dust and the onset of other cancers, although there was no evidence to establish an association. A meta-analysis that included four case-controls studies showed that workers exposed to wood dust exhibited higher rates of nasal adenocarcinoma than other workers (odds ratio = 10.28; 95% confidence interval: 5.92 and 17.85; P<0,0001), although a large degree of heterogeneity was found.

Conclusions

Low-to-moderate quality evidence supports a causal association between cancer and occupational exposure to wood dust, and this association was stronger for nasal adenocarcinoma than for lung cancer. There was no evidence of an association between wood dust exposure and the other cancers examined.