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BSE 29 juillet 2016 - no. 217

 

29 juillet 2016 - no. 217

Documentation en Radioprotection d'EDF - DPI - Division Production Nucléaire

 

Projets de publication

Article

FOURNIER L, LAURENT O, SAMSON E et al. - External radiation dose and cancer mortality among French nuclear workers : considering potential confounding by internal radiation exposure. – International archives of occupational and environmental health, online 06/07/2016, 9 p.

  • abstract

OBJECTIVES: French nuclear workers have detailed records of their occupational exposure to external radiation that have been used to examine associations with subsequent cancer mortality. However, some workers were also exposed to internal contamination by radionuclides. This study aims to assess the potential for bias due to confounding by internal contamination of estimates of associations between external radiation exposure and cancer mortality.

METHODS: A cohort of 59,004 workers employed for at least 1 year between 1950 and 1994 by CEA (Commissariat à l'Energie Atomique), AREVA NC, or EDF (Electricité de France) and badge-monitored for external radiation exposure were followed through 2004 to assess vital status and cause of death. A flag based on a workstation-exposure matrix defined four levels of potential for internal contamination. Standardized mortality ratios were assessed for each level of the internal contamination indicator. Poisson regression was used to quantify associations between external radiation exposure and cancer mortality, adjusting for potential internal contamination.

RESULTS: For solid cancer, the mortality deficit tended to decrease as the levels of potential for internal contamination increased. For solid cancer and leukemia excluding chronic lymphocytic leukemia, adjusting the dose-response analysis on the internal contamination indicator did not markedly change the excess relative risk per Sievert of external radiation dose.

CONCLUSIONS: This study suggests that in this cohort, neglecting information on internal dosimetry while studying the association between external dose and cancer mortality does not generate a substantial bias. To investigate more specifically the health effects of internal contamination, an effort is underway to estimate organ doses due to internal contamination.

 

Rapports

ICRP – Occupational intakes of radionuclides Part 4. ICRP ref 4849-5568-5428. – Annals of the ICRP, [online 14 juillet 2016], 337 p.

  • draft disponible sur le site de l’ICRP http://www.icrp.org (contribution possible jusqu’au 16 septembre 2016)

 

ICRP – Dose coefficients for non-human biota environmentally exposed to radiation. ICRP ref 4851-0615-0964. – Annals of the ICRP, [online 4 juillet 2016], 92 p.

  • draft disponible sur le site de l’ICRP http://www.icrp.org (contribution possible jusqu’au 7 octobre 2016)

 

Vient de paraître

Articles

DELP MD, CHARVAT JM, LIMOLI CL et al. - Apollo lunar astronauts show higher cardiovascular disease mortality : possible deep space radiation effects on the vascular endothelium. – Scientific reports, 28/07/2016, 8, 29901, 11 p.

EBNER DK, OHSAWA M, IGARI K et al. - Lifestyle-related diseases following the evacuation after the Fukushima Daiichi nuclear power plant accident : a retrospective study of Kawauchi Village with long-term follow-up. – BMJ Open, 11/07/2016, 6, 7, e011641, 8 p.

 

KUNII Y, SUZUKI Y, SHIGA T et al. - Severe psychological distress of evacuees in evacuation zone caused by the Fukushima Daiichi nuclear power plant accident : the Fukushima Health management Survey. – Plos One, 08/07/2016, 11, 7, e0158821, 15 p.

UEMURA M, OHIRA T, YASUMURA S et al. – Association between psychological distress and dietary intake among evacuees after the Great East Japan Earthquake in a cross-sectional study : the Fukushima Health Management Survey. - BMJ Open, 05/07/2016, 6, 7, e011534, 13 p.

BRECHIGNAC F, OUGHTON D, MAYS C et al. - Addressing ecological effects of radiation on populations and ecosystems to improve protection of the environment against radiation : Agreed statements from a Consensus Symposium. – Journal of environmental radioactivity, 07/2016, 158-159, 21-29.

  • abstract

This paper reports the output of a consensus symposium organized by the International Union of Radioecology in November 2015. The symposium gathered an academically diverse group of 30 scientists to consider the still debated ecological impact of radiation on populations and ecosystems. Stimulated by the Chernobyl and Fukushima disasters' accidental contamination of the environment, there is increasing interest in developing environmental radiation protection frameworks. Scientific research conducted in a variety of laboratory and field settings has improved our knowledge of the effects of ionizing radiation on the environment.

However, the results from such studies sometimes appear contradictory and there is disagreement about the implications for risk assessment. The Symposium discussions therefore focused on issues that might lead to different interpretations of the results, such as laboratory versus field approaches, organism versus population and ecosystemic inference strategies, dose estimation approaches and their significance under chronic exposure conditions. The participating scientists, from across the spectrum of disciplines and research areas, extending also beyond the traditional radioecology community, successfully developed a constructive spirit directed at understanding discrepancies. From the discussions, the group has derived seven consensus statements related to environmental protection against radiation, which are supplemented with some recommendations. Each of these statements is contextualized and discussed in view of contributing to the orientation and integration of future research, the results of which should yield better consensus on the ecological impact of radiation and consolidate suitable approaches for efficient radiological protection of the environment.

TERAS LR, DIVER WR, TURNER MC et al. - Residential radon exposure and risk of incident hematologic malignancies in the Cancer Prevention Study-II Nutrition Cohort. – Environmental research, 07/2016, 148, 46-54.

  • abstract 

Dosimetric models show that radon, an established cause of lung cancer, delivers a non negligible dose of alpha radiation to the bone marrow, as well as to lymphocytes in the tracheobronchial epithelium, and therefore could be related to risk of hematologic cancers. Studies of radon and hematologic cancer risk, however, have produced inconsistent results. To date there is no published prospective, population-based study of residential radon exposure and hematologic malignancy incidence. We used data from the American Cancer

Society Cancer Prevention Study-II Nutrition Cohort established in 1992, to examine the association between county-level residential radon exposure and risk of hematologic cancer.

The analytic cohort included 140,652 participants (66,572 men, 74,080 women) among which 3019 incident hematologic cancer cases (1711 men, 1308 women) were identified during 19 years of follow-up. Cox proportional hazard regression was used to calculate multivariable adjusted hazard ratios (HRs) and corresponding 95% confidence intervals (CIs) for radon exposure and hematologic cancer risk. Women living in counties with the highest mean radon concentrations (>148Bq/m(3)) had a statistically significant higher risk of hematologic cancer compared to those living in counties with the lowest (<74Bq/m(3)) radon levels (HR=1.63, 95% CI:1.23-2.18), and there was evidence of a dose-response relationship (HRcontinuous=1.38, 95% CI:1.15-1.65 per 100Bq/m(3); p-trend=0.001). There was no association between county-level radon and hematologic cancer risk among men. The findings of this large, prospective study suggest residential radon may be a risk factor for lymphoid malignancies among women. Further study is needed to confirm these findings.

VRAL A, DECORTE V, DEPUYDT J et al. - A semi‐ automated FISH‐ based micronucleus‐ centromere assay for biomonitoring of hospital workers exposed to low doses of ionizing radiation. – Molecular medicine reports, 07/2016, 14, 1, 103-110.

TSUBOKURA M, NOMURA S, SAKAIHARA K et al. - Estimated association between dwelling soil contamination and internal radiation contamination levels after the 2011 Fukushima Daiichi nuclear accident in Japan. - BMJ Open, 09/06/2016, 6, 6, e010970, 8 p.

LAURENT O, GOMOLKA M, HAYLOCK R et al. – Concerted Uranium Research in Europe (CURE): toward a collaborative project integrating dosimetry, epidemiology and radiobiology to study the effects of occupational uranium exposure. - Journal of radiological protection, 06/2016, 36, 2, 319-345.

WAKEFORD R - Chernobyl and Fukushima-where are we now ? Editorial. – Journal of radiological protection, 06/2016, 36, 2, E1-E5.

YAMASHITA S – Adolescent thyroid cancer after the Fukushima nuclear power plant accident : mass screening effect or a real increase ? - ASCO Daily news, 26/05/2016, 6 p.

ATSR – Qu’est-ce qu’un site pollué par la radioactivité ? - Rayonnements ionisants, 04-06/2016, 2,6-14. (pas de résumé disponible)

MICHEL LA, DONCKIER J, ROSIERE A - Post-Chernobyl incidence of papillary thyroid cancer among Belgian children less than 15 years of age in April 1986 : a 30-year surgical experience. - Acta Chirurgica Belgica, 04/2016, 116, 2, 101-113.

  • abstract

OBJECTIVE: We raised the question of a possible relationship in Belgium between the occurrence of papillary thyroid carcinoma (PTC) and age of children (<15 years) at the time of the Chernobyl nuclear plant accident in April 1986.

SETTING: Referral university centre for endocrine surgery.

MATERIAL AND METHODS: Thirty-year prospective study of the experience of a surgical team with PTC since the Chernobyl accident, taken out of 2349 patients operated on for any thyroid lesions from April 1986 to April 2015, comparing the incidence of PTC by age groups.

MAIN OUTCOME MEASUREMENT: Comparison of PTC incidence in patients >15 years (group A) and children <15 years (group B) in April 1986.

RESULTS: Out of a total of 2349 patients having undergone thyroid surgery for all types of lesions during 30 year after Chernobyl and born before April 1986, 2164 were >15 years of age at the time of the nuclear accident (group A) and 175 developed PTC (8.1%) compared to 36 PTC (19.5%) that occurred in 185 children <15 years of age (group B) in April 1986 (p < 0.001).

CONCLUSIONS: Radiation exposure affected residents of countries (including Belgium) well beyond Ukraine and Belarus. This was demonstrated by a 1990 meteorological report. Over 30 years, there has been a persistent higher incidence of PTC among Belgian children below the age of 15 years at the time of the Chernobyl accident. This relationship with age has even been strengthened by the implementation of more sophisticated immunohistochemical biomarkers diagnostic technology since April 2011.

 

LEHRER S, GREEN S, ROSENZWEIG KE – Reduced ovarian cancer incidence in women exposed to low dose ionizing background radiation or radiation to the ovaries after treatment for breast cancer or rectosigmoid cancer. - Asian Pacific journal of cancer prevention, 2016, 17, 6, 2979, 2982.

VERREET T, VERSLEGERS M, QUINTENS R et al. - Current evidence for developmental, structural, and functional brain defects following prenatal radiation exposure. - Neural plasticity, 2016, 1243527, 17 p.

 

Comptes-rendus de congrès

First International Conference on Risk Perception, Communication and Ethics of Exposures to Ionizing Radiation (RICOMET). Brdo Castle (Slovénie), 15-16 juin 2015. - Journal of radiological protection, 06/2016, 36, 2, E11-E-15, S1-S192.

Association Belge de radioprotection - Public communication on nuclear emergencies. Bruxelles (Belgique), 4 mars 2016. – Annales de l’Association Belge de radioprotection, 04-06/2016, 41, 1, 1-73.

ASN – Séminaire sur les risques de leucémies et exposition aux rayonnements ionisants, Paris, 9 juin 2015.

 

Dossier

Le projet CIGEO, pour stocker les déchets les plus radioactifs. – Revue générale nucléaire, 05- 06/2016, 3, 12-46.

 

Note d’information

IRSN – Rejets de césium radioactif sous forme de microbilles de silice lors de l’accident de Fukushima-Daiichi. - 22/07/2016, 5 p.

 

Rapport

Autorité environnementale – Avis délibéré de l’Autorité environnementale sur le plan national de gestion des matières et des déchets radioactifs (2016-2018). - 20/07/2016, 37 p.

 

Autres informations

Journée

RP Cirkus - 3èmes Journées techniques du Radioprotection Cirkus. Lyon, 12-13 octobre 2016.

SFRP – 10ème Rencontres des personnes compétentes en radioprotection. - Paris, 8-9 novembre 2016.

 

 

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