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1.
Sensors (Basel) ; 24(7)2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38610587

RESUMEN

This paper describes a novel architecture that aims to create a template for the implementation of an IT platform, supporting the deployment and integration of the different digital twin subsystems that compose a complex urban intelligence system. In more detail, the proposed Smart City IT architecture has the following main purposes: (i) facilitating the deployment of the subsystems in a cloud environment; (ii) effectively storing, integrating, managing, and sharing the huge amount of heterogeneous data acquired and produced by each subsystem, using a data lake; (iii) supporting data exchange and sharing; (iv) managing and executing workflows, to automatically coordinate and run processes; and (v) to provide and visualize the required information. A prototype of the proposed IT solution was implemented leveraging open-source frameworks and technologies, to test its functionalities and performance. The results of the tests performed in real-world settings confirmed that the proposed architecture could efficiently and easily support the deployment and integration of heterogeneous subsystems, allowing them to share and integrate their data and to select, extract, and visualize the information required by a user, as well as promoting the integration with other external systems, and defining and executing workflows to orchestrate the various subsystems involved in complex analyses and processes.

2.
Am J Ind Med ; 67(1): 31-43, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37855384

RESUMEN

BACKGROUND: Asbestos is a known human carcinogen and is causally associated with malignant mesothelioma, lung, larynx and ovarian cancers. METHODS: Cancer risk was studied among a pool of formerly asbestos-exposed workers in Italy. Fifty-two Italian asbestos cohorts (asbestos-cement, rolling-stock, shipbuilding, and other) were pooled and their mortality follow-up was updated to 2018. Standardized mortality ratios (SMRs) were computed for major causes of death considering duration of exposure and time since first exposure (TSFE), using reference rates by region, age and calendar period. RESULTS: The study included 63,502 subjects (57,156 men and 6346 women): 40% who were alive, 58% who died (cause known for 92%), and 2% lost to follow-up. Mortality was increased for all causes (SMR: men = 1.04, 95% confidence interval [CI] 1.03-1.05; women = 1.15, 95% CI 1.11-1.18), all malignancies (SMR: men = 1.21, 95% CI 1.18-1.23; women = 1.29, 95% CI 1.22-1.37), pleural and peritoneal malignancies (men: SMR = 10.46, 95% CI 9.86-11.09 and 4.29, 95% CI 3.66-5.00; women: SMR = 27.13, 95% CI 23.29-31.42 and 7.51, 95% CI 5.52-9.98), lung (SMR: men = 1.28, 95% CI 1.24-1.32; women = 1.26, 95% CI 1.02-1.53), and ovarian cancer (SMR = 1.42, 95% CI 1.08-1.84). Pleural cancer mortality increased during the first 40 years of TSFE (latency), reaching a plateau thereafter. CONCLUSIONS: Analyses by time-dependent variables showed that the risk for pleural neoplasms increased with latency and no longer increases at long TSFE, consistent with with asbestos clearance from the lungs. Peritoneal neoplasm risk increased over all observation time.


Asunto(s)
Amianto , Neoplasias Pulmonares , Mesotelioma , Enfermedades Profesionales , Exposición Profesional , Neoplasias Ováricas , Neoplasias Peritoneales , Neoplasias Pleurales , Masculino , Humanos , Femenino , Causas de Muerte , Mesotelioma/etiología , Estudios de Cohortes , Exposición Profesional/efectos adversos , Enfermedades Profesionales/etiología , Materiales de Construcción , Amianto/efectos adversos , Italia/epidemiología , Neoplasias Pulmonares/etiología
3.
Epidemiol Prev ; 47(4-5): 257-262, 2023.
Artículo en Italiano | MEDLINE | ID: mdl-37846448

RESUMEN

BACKGROUND: the relationship between past asbestos exposure and the onset of malignant mesothelioma (MM) is well established. However, defining the exposure is not always easy, as it occurs decades before the onset of the disease. OBJECTIVES: this report describes four cases of MM diagnosed in two different married couples, both exposed to asbestos fibers: husbands at work and wives for cohabiting and washing their work overalls. DESIGN: case report. METHODS: the information was collected through interviews using a semi-structured questionnaire and analyzed by occupational hygienists during the activity of epidemiological surveillance of this disease. The results of the mineral content of asbestos fibers performed on lung parenchymal from one of the female cases are available. RESULTS: these two cases show a longer latency in the lesser exposed confirming what an occupational epidemiological study has recently highlighted. CONCLUSIONS: whenever good quality information collected during interviews are available, skilled occupational hygienists are able to reconstruct past exposures in quali-quantitative terms.


Asunto(s)
Amianto , Neoplasias Pulmonares , Mesotelioma Maligno , Mesotelioma , Enfermedades Profesionales , Exposición Profesional , Neoplasias Pleurales , Humanos , Femenino , Mesotelioma/inducido químicamente , Mesotelioma/diagnóstico , Mesotelioma/epidemiología , Esposos , Exposición Profesional/efectos adversos , Neoplasias Pleurales/epidemiología , Italia/epidemiología , Amianto/toxicidad , Neoplasias Pulmonares/inducido químicamente , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/epidemiología , Enfermedades Profesionales/epidemiología
4.
Epidemiol Prev ; 47(4-5): 298-305, 2023.
Artículo en Italiano | MEDLINE | ID: mdl-37846453

RESUMEN

More than 30 years have passed since the beginning of the epidemiological surveillance of mesothelioma (MM). The Italian National Mesothelioma Register (ReNaM), part of the research department of the National Institute for insurance against industrial injuries (INAIL), has published 7 reports with the description of the cas-es concerning the assessment of diagnoses and exposures to asbestos suffered mainly during working activities but also environmental, in the family premises and during personal activities.Today we are witnessing a reduction in the commitment by some regions which negatively affects those who develop the pathology. Reading the ReNaM reports it emerges, among others, the problem of the delay in reporting new cases which limits the collection of information directly from patients. This contribution, discussing various topics, invites to develop a debate that should allow to update and resolve the critical aspects that arise after decades of activity regarding, in particular, the asbestos exposure assessment. It is the primary interest of the authors to give continuity and improve the ReNaM which remains the most prestigious MM register among those active in other countries.


Asunto(s)
Amianto , Mesotelioma Maligno , Mesotelioma , Exposición Profesional , Neoplasias Pleurales , Humanos , Exposición Profesional/efectos adversos , Vigilancia de la Población , Italia/epidemiología , Sistema de Registros , Mesotelioma/epidemiología , Mesotelioma/etiología , Amianto/toxicidad , Neoplasias Pleurales/diagnóstico , Neoplasias Pleurales/epidemiología , Neoplasias Pleurales/etiología
5.
Sensors (Basel) ; 23(2)2023 Jan 06.
Artículo en Inglés | MEDLINE | ID: mdl-36679446

RESUMEN

Digitization in healthcare systems, with the wid adoption of Electronic Health Records, connected medical devices, software and systems providing efficient healthcare service delivery and management. On the other hand, the use of these systems has significantly increased cyber threats in the healthcare sector. Vulnerabilities in the existing and legacy systems are one of the key causes for the threats and related risks. Understanding and addressing the threats from the connected medical devices and other parts of the ICT health infrastructure are of paramount importance for ensuring security within the overall healthcare ecosystem. Threat and vulnerability analysis provides an effective way to lower the impact of risks relating to the existing vulnerabilities. However, this is a challenging task due to the availability of massive data which makes it difficult to identify potential patterns of security issues. This paper contributes towards an effective threats and vulnerabilities analysis by adopting Machine Learning models, such as the BERT neural language model and XGBoost, to extract updated information from the Natural Language documents largely available on the web, evaluating at the same time the level of the identified threats and vulnerabilities that can impact on the healthcare system, providing the required information for the most appropriate management of the risk. Experiments were performed based on CS news extracted from the Hacker News website and on Common Vulnerabilities and Exposures (CVE) vulnerability reports. The results demonstrate the effectiveness of the proposed approach, which provides a realistic manner to assess the threats and vulnerabilities from Natural Language texts, allowing adopting it in real-world Healthcare ecosystems.


Asunto(s)
Seguridad Computacional , Ecosistema , Atención a la Salud , Registros Electrónicos de Salud , Aprendizaje Automático
6.
Thorax ; 78(8): 808-815, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36357176

RESUMEN

INTRODUCTION: Exposure to asbestos increases the risk of lung cancer and mesothelioma. Few studies quantified the premature occurrence of these diseases in asbestos-exposed workers. Focus on premature disease onset (rate advancement or acceleration) can be useful in risk communication and for the evaluation of exposure impact. We estimated rate advancement for total mortality, lung cancer and pleural mesothelioma deaths, by classes of cumulative asbestos exposure in a pooled cohort of asbestos cement (AC) workers in Italy. METHOD: The cohort study included 12 578 workers from 21 cohorts, with 6626 deaths in total, 858 deaths from lung cancer and 394 from pleural malignant neoplasm (MN). Rate advancement was estimated by fitting a competitive mortality Weibull model to the hazard of death over time since first exposure (TSFE). RESULT: Acceleration time (AT) was estimated at different TSFE values. The highest level of cumulative exposure compared with the lowest, for pleural MN AT was 16.9 (95% CI 14.9 to 19.2) and 33.8 (95% CI 29.8 to 38.4) years at TSFE of 20 and 40 years, respectively. For lung cancer, it was 13.3 (95% CI 12.0 to 14.7) and 26.6 (95% CI 23.9 to 29.4) years, respectively. As for total mortality, AT was 3.35 (95% CI 2.98 to 3.71) years at 20 years TSFE, and 6.70 (95% CI 5.95 to 7.41) at 40 years TSFE. CONCLUSION: The current study observed marked rate advancement after asbestos exposure for lung cancer and pleural mesothelioma, as well as for total mortality.


Asunto(s)
Amianto , Neoplasias Pulmonares , Mesotelioma , Enfermedades Profesionales , Exposición Profesional , Neoplasias Pleurales , Humanos , Amianto/toxicidad , Estudios de Cohortes , Italia/epidemiología , Neoplasias Pulmonares/epidemiología , Neoplasias Pulmonares/mortalidad , Mesotelioma/epidemiología , Mesotelioma/mortalidad , Mortalidad/tendencias , Enfermedades Profesionales/epidemiología , Enfermedades Profesionales/mortalidad , Exposición Profesional/efectos adversos , Neoplasias Pleurales/epidemiología , Neoplasias Pleurales/mortalidad , Medición de Riesgo , Masculino , Femenino , Industria de la Construcción , Adulto , Persona de Mediana Edad , Anciano
7.
J Occup Environ Med ; 64(10): e635-e640, 2022 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-35941734

RESUMEN

OBJECTIVE: The aim of this study is the reconstruction of asbestos exposure in absence of environmental monitoring data, to use the results in a cohort study of railway rolling stock workers. METHODS: To reconstruct past exposures, the production data (number of rolling stock and asbestos content) and working methods were reconstructed with former employees and company documentation, literature data, and author expertise. RESULTS: The result of the work is a job/exposure matrix from 1956 to 1979, when sprayed asbestos was used as insulator of the metal bodies. Annual exposure estimate varies from 0.08 to 4.9 fb/mL depending on the specific jobs. Thirty-one mesotheliomas with occupational exposure, one with environmental and one with family exposures, were identified. CONCLUSIONS: The originality of the study consists on the use of company production data to establish frequency duration of asbestos exposure.


Asunto(s)
Amianto , Mesotelioma , Enfermedades Profesionales , Exposición Profesional , Estudios de Cohortes , Monitoreo del Ambiente , Humanos , Exposición Profesional/efectos adversos , Exposición Profesional/análisis
8.
New Solut ; 31(4): 434-440, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34726108

RESUMEN

The Italian economy has been battered by the SARS-CoV-2/COVID-19 pandemic. European Union and Italian government economic recovery funds will provide special economic recovery loans aimed toward energy saving and the consequent reduction of greenhouse gas emissions (GHG) to meet the Paris Agreement climate goals. In, Italy, millions of square meters of asbestos cement (AC) roofing cover industrial and civic buildings. Removal of this asbestos containing material (ACM) would contribute to three pandemic and economic recovery objectives: job creation, reduction of greenhouse gasses (thru energy savings), and public health improvements. Though asbestos was used for its excellent thermal insulation properties, we provide calculations that demonstrate that the cement binding in AC roofing negates the asbestos insulation function. Therefore, replacing AC roofing with roofs made with alternative materials with better thermal transmission coefficients can contribute significantly to energy savings, reduce the risk of asbestos-related morbidity and mortality, and establish substantial economic activity.


Asunto(s)
Amianto , COVID-19 , Aceleración , Materiales de Construcción , Combustibles Fósiles , Humanos , Italia , Pandemias , Salud Pública , SARS-CoV-2
10.
Ann Ist Super Sanita ; 56(3): 292-302, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32959795

RESUMEN

OBJECTIVE: Italy has been a large user of asbestos and asbestos containing materials until the 1992 ban. We present a pooled cohort study on long-term mortality in exposed workers. METHODS: Pool of 43 Italian asbestos cohorts (asbestos cement, rolling stock, shipbuilding, glasswork, harbors, insulation and other industries). SMRs were computed by industrial sector for the 1970-2010 period, for the major causes, using reference rates by age, sex, region and calendar period. RESULTS: The study included 51 801 subjects (5741 women): 55.9% alive, 42.6% died (cause known for 95%) and 1.5% lost to follow-up. Asbestos exposure was estimated at the plant and period levels. Asbestos related mortality was significantly increased. All industrial sectors showed increased mortality from pleural malignancies, and most also from peritoneal and lung cancer and asbestosis, with exposure related trend. Increased mortality was also observed for ovarian cancer and for bladder cancer. DISCUSSION: The study confirmed the increased risk for cancer of the lung, ovary, pleura and peritoneum but not of the larynx and the digestive tract. A large increase in mortality from asbestosis was observed.


Asunto(s)
Amianto/toxicidad , Asbestosis/mortalidad , Materiales de Construcción/toxicidad , Industrias , Exposición Profesional/efectos adversos , Causas de Muerte , Estudios de Cohortes , Femenino , Humanos , Italia/epidemiología , Neoplasias Pulmonares/etiología , Neoplasias Pulmonares/mortalidad , Fibras Minerales/toxicidad , Neoplasias Ováricas/etiología , Neoplasias Ováricas/mortalidad , Neoplasias Peritoneales/etiología , Neoplasias Peritoneales/mortalidad , Neoplasias Pleurales/etiología , Neoplasias Pleurales/mortalidad , Estudios Retrospectivos , Riesgo , Neoplasias de la Vejiga Urinaria/etiología , Neoplasias de la Vejiga Urinaria/mortalidad
13.
Epidemiol Prev ; 44(1): 73-83, 2020.
Artículo en Italiano | MEDLINE | ID: mdl-32374117

RESUMEN

The SIML Position Paper dedicated to asbestos (PPA) is addressed (mainly) to competent practitioners (CP) for the purposes to provide a guidance about a set of items classified as markedly interesting: the actuality of asbestos exposure and the evaluation of the related risk; the diagnosis of the asbestos related diseases; the shape of the risk functions (namely about mesotheliomas); the causal relationship between exposure and disease; the medical surveillance of the workers currently and previously exposed. The scientific literature doesn't acknowledge the idea that nowadays in Italy the frequency of pleural mesotheliomas deriving from environmental asbestos from outdoor sources exposures is really a relevant item. Inside the SIML PPA the chapter concerning industrial hygiene and environmental monitoring themes shows inaccuracies and deficiencies, so resulting of scarce utility for the CPs that should be called for a more cooperative role in front of the employers. The arguments of the diagnosis of the asbestos related diseases is developed with an undue emphasis upon the differential histological diagnosis of asbestosis and, especially, of pleural mesothelioma: nosographic aspects that hardly are posed to the attention of the CP. A similar emphasis is posed towards the shape of the risk function for pleural mesothelioma, a theme absent from the current practice of the CP such as of other occupational practitioners. In conclusion, next to themes of undoubted interest for the PC, the SIML PPA dwells on the scrutiny of some topics representing critical elements of the current contrast between consultants and valuers in the context of criminal prosecutions: subjects having forensic relevance but far from the "application actuality" for the CP invoked in the PPA. A greater transparency, last but not least, was to have been posed, inside the SIML PPA, in the disclosure of the conflict of interests (COIs) of some Authors, declaring their consultancy in favour of companies.


Asunto(s)
Amianto , Enfermedades Profesionales/epidemiología , Asbestosis/epidemiología , Humanos , Italia/epidemiología , Mesotelioma/epidemiología , Exposición Profesional
14.
Ann Work Expo Health ; 64(6): 636-644, 2020 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-32358603

RESUMEN

The largest chrysotile mine in Western Europe was active in Balangero (Italy) from 1917 to 1990. We quantitatively assessed exposure to asbestos in the framework of a cohort study on mortality of Balangero miners and millers. Using documents filed at the Italian State Archive we reconstructed the job-histories of cohort members. The concentration of asbestos fibres by work-area was derived from industrial hygiene surveys since 1968 and monitoring programs since 1975. Earlier exposures had been estimated based on the experimental reconstruction of past working conditions. In the mine concentrations of about 20 fibres per millilitre (f/ml) were initially present, decreasing to 5 in the mid-1950s and to <1 in late 1970s. In milling areas higher levels were present and did not fall below 1 f/ml until the mid-1980s. Cumulative exposure of cohort members, as the sum over their job-history of their year- and area-specific exposures, were <10 fibre/millilitre years (f/ml-y) in 18% of workers, 10-100 in 32%, 100-1000 in 37%, and >1000 in 13%. Compared with recently published estimates for the Russian chrysotile mine in Asbest, fibre concentrations in Balangero were higher during the 1950s and 1960s. Such difference may be partly accounted for by difficulties in converting dust measurements to fibre concentrations in the Russian study and the need to rely on the experimental reconstruction of exposures before 1968 in our study.


Asunto(s)
Exposición Profesional , Asbestos Serpentinas/efectos adversos , Estudios de Cohortes , Europa (Continente) , Humanos , Italia , Federación de Rusia
15.
Ann Work Expo Health ; 64(6): 622-635, 2020 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-32328661

RESUMEN

OBJECTIVES: This study was performed with the aim of investigating the temporal patterns and determinants associated with mortality from asbestosis among 21 cohorts of Asbestos-Cement (AC) workers who were heavily exposed to asbestos fibres. METHODS: Mortality for asbestosis was analysed for a cohort of 13 076 Italian AC workers (18.1% women). Individual cumulative asbestos exposure index was calculated by factory and period of work weighting by the different composition of asbestos used (crocidolite, amosite, and chrysotile). Two different approaches to analysis, based on Standardized Mortality Ratios (SMRs) and Age-Period-Cohort (APC) models were applied. RESULTS: Among the considered AC facilities, asbestos exposure was extremely high until the end of the 1970s and, due to the long latency, a peak of asbestosis mortality was observed after the 1990s. Mortality for asbestosis reached extremely high SMR values [SMR: males 508, 95% confidence interval (CI): 446-563; females 1027, 95% CI: 771-1336]. SMR increased steeply with the increasing values of cumulative asbestos exposure and with Time Since the First Exposure. APC analysis reported a clear age effect with a mortality peak at 75-80 years; the mortality for asbestosis increased in the last three quintiles of the cumulative exposure; calendar period did not have a significant temporal component while the cohort effect disappeared if we included in the model the cumulative exposure to asbestos. CONCLUSIONS: Among heaviest exposed workers, mortality risk for asbestosis began to increase before 50 years of age. Mortality for asbestosis was mainly determined by cumulative exposure to asbestos.


Asunto(s)
Amianto , Asbestosis , Exposición Profesional , Amianto/efectos adversos , Asbestos Serpentinas , Femenino , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Exposición Profesional/efectos adversos
16.
Epidemiol Prev ; 44(5-6): 402-404, 2020.
Artículo en Italiano | MEDLINE | ID: mdl-33706493

RESUMEN

New findings and technical investigations carried out on the material called Martinite have found that, already at the end of the Nineteenth century, this material, with excellent insulating properties, free from asbestos and other substances harmful to human health, was available on the national and international markets. At the beginning of the Twentieth century, Martinite was used in warships of the Italian Royal Navy and, in 1950, the Italian national naval certification body (UNAV) authorized it to be used on all ships. It also had other uses, including the construction of civil power plants. If properly advertised and distributed, Martinite could have been used all over the world in place of asbestos in different applications, avoiding the catastrophic consequences on the health of thousands of people. The product did not receive the desired commercial development, because of the small size of the company, which could not compete with the large asbestos multinationals. KEYWORDS: asbestos; Martinite; asbestos substitutes; insulation.


Asunto(s)
Amianto , Exposición Profesional , Amianto/efectos adversos , Humanos , Italia , Navíos , Silicatos
17.
Am J Ind Med ; 63(2): 135-145, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31821579

RESUMEN

BACKGROUND: We studied cancer mortality and mesothelioma incidence in 974 male workers employed at least 6 months at the Balangero mine (Italy), the largest chrysotile mine in Western Europe, active from 1917 to 1985. METHODS: Vital status as of 31 May 2013, causes of deaths and mesothelioma incidence from 1990 were ascertained. Past exposure to asbestos by working area and calendar period was estimated, based on historical data of fibers concentrations. Individual cumulative exposure was assessed by applying estimates to the job history of cohort members. Standardized mortality ratios (SMRs) for selected causes and standardized incidence ratios for malignant mesothelioma (MM) were calculated based on regional reference rates. Poisson regression analysis was used to study MM and lung cancer risk by latency, duration, and cumulative exposure. RESULTS: Mortality was increased for all causes (SMR = 1.28; 95% confidence interval [CI] = 1.17-1.40), pleural cancer (SMR = 4.30; 95% CI = 1.58-9.37), asbestosis (SMR = 375.06; 95% CI = 262.68-519.23). An increase was also found for lung cancer (SMR = 1.14; 95% CI = 0.81-1.55) and peritoneal cancer (SMR = 3.25; 95% CI = 0.39-11.75). The risk of both pleural and peritoneal cancer mortality and of mesothelioma incidence increased with increasing cumulative exposure, duration, and latency. Poisson regression analyses showed an increase in mesothelioma risk with cumulative asbestos exposure and suggest a similar trend for lung cancer. Asbestosis mortality also increased with cumulative exposure. CONCLUSIONS: Among Balangero chrysotile miners and millers, the occurrence of malignant and nonmalignant asbestos-related diseases was increased by exposure, with dose-response relation. The study confirms the carcinogenicity of chrysotile asbestos, in particular for pleural mesothelioma.


Asunto(s)
Asbestos Serpentinas/toxicidad , Asbestosis/mortalidad , Neoplasias Pulmonares/mortalidad , Mesotelioma Maligno/mortalidad , Enfermedades Profesionales/mortalidad , Exposición Profesional/efectos adversos , Neoplasias Pleurales/mortalidad , Adulto , Causas de Muerte , Humanos , Incidencia , Italia/epidemiología , Masculino , Persona de Mediana Edad , Minería , Factores de Riesgo
18.
Ann Work Expo Health ; 64(1): 5-12, 2020 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-31774905

RESUMEN

The asbestos industry has always claimed that asbestos is a 'magic mineral', which is not replaceable. New findings, however, contradict this because asbestos-free alternatives, with excellent insulating properties, have been available since the end of the nineteenth century. The aim of this current research is to gather evidence of the potential of 'Martinite' to replace asbestos. We identified references to 'Martinite' in documents and brochures pertaining to insulation of ships, dating back as far as possible by acquiring recent interviews, utilizing records in public libraries and in archives, and conducting web searches. Martinite was produced by a small company called 'Manifatture Martiny', founded at the end of the nineteenth century in Turin, Italy. This company was specialized in insulation materials production, such as cork, rubber, foams, and even asbestos. In the early twentieth century, Martinite was utilized in warships of the Royal Italian Navy. During this time, it was patented in Italy and in many other industrialized nations. It was also utilized in construction of civilian power plants and was approved by the Architects Corporation in 1940. Furthermore, it was licenced in 1950 by the Italian National Naval Certification Body (UNAV) to be used on ships. We argue that had Martinite been properly advertised and distributed, it could have been used worldwide in place of asbestos for some applications, resulting in a lower incidence of serious and fatal diseases. The small scale of the company, compared to those of the asbestos multinationals, contributed to the lack of commercial development of the product.


Asunto(s)
Amianto , Exposición Profesional , Silicatos , Amianto/efectos adversos , Humanos , Italia , Exposición Profesional/prevención & control , Navíos
19.
Environ Health ; 18(1): 71, 2019 08 07.
Artículo en Inglés | MEDLINE | ID: mdl-31391078

RESUMEN

BACKGROUND: Despite the available information on cancer risk, asbestos is used in large areas in the world, mostly in the production of asbestos cement. Moreover, questions are raised regarding the shape of the dose response relation, the relation with time since exposure and the association with neoplasms in various organs. We conducted a study on the relationship between cumulative asbestos exposure and mortality from asbestos related diseases in a large Italian pool of 21 cohorts of asbestos-cement workers with protracted exposure to both chrysotile and amphibole asbestos. METHODS: The cohort included 13,076 workers, 81.9% men and 18.1% women, working in 21 Italian asbestos-cement factories, with over 40 years of observation. Exposure was estimated by plant and period, and weighted for the type of asbestos used. Data were analysed with consideration of cause of death, cumulative exposure and time since first exposure (TSFE), and by gender. SMRs were computed using reference rates by region, gender and calendar time. Poisson regression models including cubic splines were used to analyse the effect of cumulative exposure to asbestos and TSFE on mortality for asbestos-related diseases. 95% Confidence Intervals (CI) were computed according to the Poisson distribution. RESULTS: Mortality was significantly increased for 'All Causes' and 'All Malignant Neoplasm (MN)', in both genders. Considering asbestos related diseases (ARDs), statistically significant excesses were observed for MN of peritoneum (SMR: men 14.19; women 15.14), pleura (SMR: 22.35 and 48.10), lung (SMR: 1.67 and 1.67), ovary (in the highest exposure class SMR 2.45), and asbestosis (SMR: 507 and 1023). Mortality for ARDs, in particular pleural and peritoneal malignancies, lung cancer, ovarian cancer and asbestosis increased monotonically with cumulative exposure. Pleural MN mortality increased progressively in the first 40 years of TSFE, then reached a plateau, while peritoneal MN showed a continuous increase. The trend of lung cancer SMRs also showed a flattening after 40 years of TSFE. Attributable proportions for pleural, peritoneal, and lung MN were respectively 96, 93 and 40%. CONCLUSIONS: Mortality for ARDs was associated with cumulative exposure to asbestos. Risk of death from pleural MN did not increase indefinitely with TSFE but eventually reached a plateau, consistently with reports from other recent studies.


Asunto(s)
Amianto/efectos adversos , Asbestosis/epidemiología , Neoplasias/epidemiología , Exposición Profesional/efectos adversos , Adulto , Asbestosis/etiología , Estudios de Cohortes , Femenino , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Neoplasias/inducido químicamente , Factores Sexuales , Factores de Tiempo , Adulto Joven
20.
Occup Environ Med ; 76(9): 611-616, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31413184

RESUMEN

OBJECTIVES: Models based on the multistage theory of cancer predict that rates of malignant mesothelioma continuously increase with time since first exposure (TSFE) to asbestos, even after the end of external exposure. However, recent epidemiological studies suggest that mesothelioma rates level off many years after first exposure to asbestos. A gradual clearance of asbestos from the lungs has been suggested as a possible explanation for this phenomenon. We analysed long-term trends of pleural and peritoneal cancer mortality in subjects exposed to asbestos to evaluate whether such trends were consistent with the clearance hypothesis. METHODS: We used data from a pool of 43 Italian asbestos cohorts (51 801 subjects). The role of asbestos clearance was explored using the traditional mesothelioma multistage model, generalised to include a term representing elimination of fibres over time. RESULTS: Rates of pleural cancer increased until 40 years of TSFE, but remained stable thereafter. On the other hand, we observed a monotonic increase of peritoneal cancer with TSFE. The model taking into account asbestos clearance fitted the data better than the traditional one for pleural (p=0.004) but not for peritoneal (p=0.09) cancer. CONCLUSIONS: Rates of pleural cancer do not increase indefinitely after the exposure to asbestos, but eventually reach a plateau. This trend is well described by a model accounting for a gradual elimination of the asbestos fibres. These results are relevant for the prediction of future rates of mesothelioma and in asbestos litigations.


Asunto(s)
Amianto/efectos adversos , Enfermedades Profesionales/mortalidad , Exposición Profesional/efectos adversos , Neoplasias Peritoneales/mortalidad , Neoplasias Pleurales/mortalidad , Adolescente , Adulto , Femenino , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Modelos Teóricos , Factores de Tiempo , Adulto Joven
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