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- Buzio, L, et al.
(författare)
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Glutathione S-transferases M1-1 and T1-1 as risk modifiers for renal cell cancer associated with occupational exposure to chemicals
- 2003
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Ingår i: Occupational and Environmental Medicine. - : BMJ. - 1351-0711 .- 1470-7926. ; 60:10, s. 789-793
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Tidskriftsartikel (refereegranskat)abstract
- Aims: To investigate the possible interaction between occupational risk factors and genotype for glutathione S-transferases M1 and T1 (GSTM1 and GSTT1) in renal cell cancer (RCC). Methods: One hundred patients with RCC and 200 outpatient controls were enrolled at Parma University Hospital. The polymorphisms of glutathione S-transferase M1-1 (GSTM1) and T1-1 (GSTT1) were investigated by PCR, occupational history was collected by a structured questionnaire. Results: Subjects with GSTM1 present genotype showed higher risks for RCC, compared to GSTM1 null subjects, if exposed to metals (OR 2.73, 95% CI 0.91 to 8.22 v 1.14, 95% CI 0.46 to 2.82) or pesticides (OR 3.46, 95% CI 1.12 to 10.74 v 1.59, 95% CI 0.48 to 5.34). The GSTT1 present genotype also enhanced the risk (about twofold) of RCC among subjects exposed to solvents and pesticides, compared with those GSTT1 null. Conclusions: Results support the hypothesis that GSTM1 and GSTT1 polymorphisms can interact with several occupational exposures to significantly modify the risk of RCC among exposed subjects.
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| 2. |
- Buzio, L, et al.
(författare)
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Occupational risk factors for renal cell cancer. An Italian case-control study
- 2002
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Ingår i: Medicina del Lavoro. - 0025-7818. ; 93:4, s. 303-309
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To examine possible associations between occupational and environmental risk factors and renal cell cancer (RCC), a tumour with unclear aetiology and increasing incidence. Methods: A questionnaire-based case-control study of 100 histologically verified cases of RCC and 200 controls was conducted at Parma University Hospital. The control group was enrolled from patients attending different outpatient departments and represented the same residential area as the cases. For all exposure variables under study, two levels of duration were defined: "short" and "prolonged" for less than 10 years or more, respectively. Results: The highest risk estimates for RCC were found for "prolonged" exposure to organic solvents with an odds ratio (OR) of 2.2 (95% confidence interval, CI: 1.0-4,8). "Prolonged" exposures to pesticides and copper sulphate were also associated with increased risk, OR 2.0 (95% CI: 0.8-4.7) and OR 2.7 (95% CI: 1.3-5.5), respectively. Conclusions: Our data suggests an association between RCC and exposure to organic solvents, pesticides and copper sulphate. A risk gradient as a function of exposure duration was found for organic solvents (p= 0.044) and copper sulphate (p= 0.036), but not for pesticides.
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| 7. |
- Tondel, Martin, 1962-, et al.
(författare)
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Increased cancer incidence in north Sweden-an early promoting effect caused by the chernobyl accident.
- 2003
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Ingår i: Epidemiology. - : Lippincott Williams & Wilkins. - 1044-3983. ; 14:5 Suppl., s. S94-S94
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Introduction: In Sweden the ground gamma radiation, due to uranium containing granite, contribute to the population's total radiation dose. After the Chemobyl nuclear power plant accident in 1986 as much as five percent of the released caesium-137 was deposited in Sweden, especially in the Northern part of the country. Our hypothesis was that this radiation caused increased cancer incidence, after adjustment by ground gamma radiation exposure.Methods: The study base included the population of eight counties with the highest fallout after the Chernobyl accident, but also with unaffected areas in these counties serving as the reference. Each person 0-60 years of age living in the same parish at 31 December 1985 and 31 December 1987 were included in a cohort. With the coordinate of each person's dwelling from the National Land Survey of Sweden a total of 1 137 106 individuals could be given 1) ground gamma radiation exposure from the digital map of the Swedish Geological Agency and 2) caesium-137 exposure from a similar map created by Swedish Radiation Protection Institute. Accuracy of the dwelling coordinate was 100 metres and for the radiation exposures 200 metres as done by aeroplane measurements. Three time periods were analysed 1988-1991, 1992-1995 and 1988-1999.Results: Population density, lung cancer incidence 1988-1999 and total cancer incidence 1986-1987 was risk factors for total cancer outcome in 1988-1999. Age adjusted ERR per 100 nGy/h for ground gamma radiation and total cancer incidence did not show any significant dose response measured, either in each three years time intervals or in the total period of 1988-1999. For caesium the ERR per 100 nGy/h (adjusted by population density, lung cancer incidence, total cancer incidence 1986-1987 and ground gamma radiation) was significant in 1988-1991 followed by a decline in risk 1992-1995 and then a slight but not complete return in risk. The ERR of 0.042 (95% CL 0.001;0.084) per 100 nGy/h for caesium exposure 1988-1999 is therefore dependent on the first three years increase, and to less extent by the following six years.Conclusion: We have found an early effect of the Chernobyl fallout in Northern Sweden. However, even in the ERR of 0.101 per 100 nGy/h is relatively low in 1988-1991, it is stable in a stepwise regression, and therefore indicating a true effect. An interpretation of our results could be that the sudden exposure of ionizing radiation from Chernobyl might have acted as a late stage general promotor for cancer. Such an early effect can hitherto been overlooked in previous studies.
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