100_4382IMG_5638Photo 337asAlTO! (46)DSCF2623
60 views

22 Giugno 2008

PER UNA NUOVA POLITICA SUI PRECARI DELLA SCUOLA

Dal sito www.precari.org

image

121 views

18 Giugno 2008

Cultura, se fa pe’ di’

mortacci

Mentre il governo Baldrusconi con i suoi accoliti continua a demolire la scuola pubblica e denigrare i docenti, nella fattispecie gl’insegnanti non di ruolo, dipinti dai pennivendoli di regime come taglialingue, fumatori di cannabis, incompetenti incerca di un posto fisso il Ministero della (NON PIù) PUBBLICA ISTRUZIONE con i suoi SOLONI toppa clamorosamente la traccia dell’esame di stato (ex maturità) … Nel frattempo ci saranno 100.000 tagli del personale, classi più numerose, scuole private più ricche, itaGLIani più ignoranti …

da RAI NEWS 24

66 views

27 Maggio 2008

Termovalorizzatori o Inceneritori?

Untitled

Leggendo un articolo pubblicato sul Venerdì di Repubblica,  si scopre che: 

Nelle popolazioni che vivono in prossimità di impianti di incenerimento dei rifiuti è stato riscontrato un aumento dei casi di cancro dal 6 al 20 per cento. Lo dice una ricerca, resa pubblica dall’istituto statale di sorveglianza sanitaria francese, l’ultima delle 435 ricerche consultabili presso la biblioteca scientifica internazionale PubMed che rilevano danni alla salute causati dai termovalorizzatori /inceneritori per le loro emissioni di diossina, prodotta dalla combustione della plastica insieme ad altri materiali.  Questa molecola deve la sua micidiale azione alla capacità di concentrarsi negli organismi viventi e di penetrare nelle cellule. Qui va a “inceppare” uno dei principali meccanismi di controllo del Dna, scatenando le alterazioni dei geni che poi portano il cancro e le malformazioni neonatali. (da Venerdì di Repubblica)

Diossina

Viel JF, Clément MC, Hägi M, Grandjean S, Challier B, Danzon A.

CNRS no 6249 Chrono-Environment, Faculty of Medicine, 2, place Saint Jacques, 25030 Besançon cedex, France. jean-francois.viel@univ-fcomte.fr

BACKGROUND: To date, few epidemiologic studies have examined the relationship between environmental PCDD/F exposure and breast cancer in human populations. Dioxin emissions from municipal solid waste incinerators (MSWIs) are one of the major sources of environmental dioxins and are therefore an exposure source of public concern. The purpose of this study was to examine the association between dioxins emitted from a polluting MSWI and invasive breast cancer risk among women residing in the area under direct influence of the facility. METHODS: We compared 434 incident cases of invasive breast cancer diagnosed between 1996 and 2002, and 2170 controls randomly selected from the 1999 population census. A validated dispersion model was used as a proxy for dioxin exposure, yielding four exposure categories. The latter were linked to individual places of residence, using Geographic Information System technology. RESULTS: The age distribution at diagnosis for all cases combined showed a bimodal pattern with incidence peaks near 50 and 70 years old. This prompted us to run models separately for women aged 20-59 years, and women aged 60 years or older. Among women younger than 60 years old, no increased or decreased risk was found for any dioxin exposure category. Conversely, women over 60 years old living in the highest exposed zone were 0.31 time less likely (95% confidence interval, 0.08-0.89) to develop invasive breast cancer. CONCLUSION: Before speculating that this decreased risk reflects a dioxin anti-estrogenic activity with greater effect on late-onset acquired breast cancer, some residual confounding must be envisaged.

PMID: 18226215 [PubMed - indexed for MEDLINE]

PMCID: PMC2267447

Floret N, Mauny F, Challier B, Arveux P, Cahn JY, Viel JF.

Department of Public Health, Biostatistics and Epidemiology Unit, Faculty of Medicine, Besançon, France.

BACKGROUND: It is not clear whether low environmental doses of dioxin affect the general population. We previously detected a cluster of patients with non-Hodgkin lymphoma around a French municipal solid waste incinerator with high dioxin emissions. To explore the environmental route suggested by these findings, we carried out a population-based case-control study in the same area. METHODS: We compared 222 incident cases of non-Hodgkin lymphoma diagnosed between 1980 and 1995 and controls randomly selected from the 1990 population census, using a 10-to-1 match. Dioxin ground-level concentrations were modeled with a second-generation Gaussian-type dispersion model, yielding four dioxin exposure categories. The latter were linked to individual places of residence, using Geographic Information System technology. RESULTS: The risk of developing non-Hodgkin lymphoma was 2.3 times higher (95% confidence interval = 1.4-3.8) among individuals living in the area with the highest dioxin concentration than among those living in the area with the lowest dioxin concentration. No increased risk was found for the intermediate dioxin exposure categories. Adjustment for a wide range of socioeconomic characteristics at the block group level did not alter the results. CONCLUSION: Although emissions from incinerators are usually not regarded as an important source of exposure to dioxins compared with other background sources, our findings support the hypothesis that environmental dioxins increase the risk of non-Hodgkin lymphoma among the population living in the vicinity of a municipal solid waste incinerator.

PMID: 12843761 [PubMed - indexed for MEDLINE]

52 views

25 Maggio 2008

CHIAIANO

Senza categoria | Commenti (0) RoLa1961 @ 13:30

image image