Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.

<h4>Background</h4>Trace elements have been hypothesised to be involved in the pathogenesis of Multiple Sclerosis and volcanic degassing is the major natural sources of trace elements. Both incidence of Multiple Sclerosis in Catania and volcanic activity of Mount Etna have been significa...

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Autores principales: Alessandra Nicoletti, Elisa Bruno, Martina Nania, Edoardo Cicero, Silvia Messina, Clara Chisari, Josita Torrisi, Davide Maimone, Roberto Marziolo, Salvatore Lo Fermo, Francesco Patti, Salvatore Giammanco, Mario Zappia
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Acceso en línea:https://doaj.org/article/bfe80f1c6b3c4f4b8dac4b7aa901d8b2
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spelling oai:doaj.org-article:bfe80f1c6b3c4f4b8dac4b7aa901d8b22021-11-18T08:42:34ZMultiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.1932-620310.1371/journal.pone.0074259https://doaj.org/article/bfe80f1c6b3c4f4b8dac4b7aa901d8b22013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24348986/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Trace elements have been hypothesised to be involved in the pathogenesis of Multiple Sclerosis and volcanic degassing is the major natural sources of trace elements. Both incidence of Multiple Sclerosis in Catania and volcanic activity of Mount Etna have been significantly increased during the last 30 years. Due to prevailing trade winds direction, volcanic gases from Etna summit craters are mostly blown towards the eastern and southern sectors of the volcano.<h4>Objective</h4>To evaluate the possible association between Multiple Sclerosis and exposure to volcanogenic trace elements.<h4>Methods</h4>We evaluated prevalence and incidence of Multiple Sclerosis in four communities (47,234 inhabitants) located in the eastern flank and in two communities (52,210 inhabitants) located in the western flank of Mount Etna, respectively the most and least exposed area to crater gas emissions.<h4>Results</h4>A higher prevalence was found in the population of the eastern flank compared to the population of the western one (137.6/100,000 versus 94.3/100,000; p-value 0.04). We found a borderline significantly higher incidence risk during the incidence study period (1980-2009) in the population of the eastern flank 4.6/100,000 (95% CI 3.1-5.9), compared with the western population 3.2/100,000 (95% CI 2.4-4.2) with a RR of 1.41 (95% CI 0.97-2.05; p-value 0.06). Incidence risks have increased over the time in both populations reaching a peak of 6.4/100,000 in the eastern flank and of 4.4/100.000 in the western flank during 2000-2009.<h4>Conclusion</h4>We found a higher prevalence and incidence of Multiple Sclerosis among populations living in the eastern flank of Mount Etna. According to our data a possible role of TE cannot be ruled out as possible co-factor in the MS pathogenesis. However larger epidemiological study are needed to confirm this hypothesis.Alessandra NicolettiElisa BrunoMartina NaniaEdoardo CiceroSilvia MessinaClara ChisariJosita TorrisiDavide MaimoneRoberto MarzioloSalvatore Lo FermoFrancesco PattiSalvatore GiammancoMario ZappiaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e74259 (2013)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Alessandra Nicoletti
Elisa Bruno
Martina Nania
Edoardo Cicero
Silvia Messina
Clara Chisari
Josita Torrisi
Davide Maimone
Roberto Marziolo
Salvatore Lo Fermo
Francesco Patti
Salvatore Giammanco
Mario Zappia
Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.
description <h4>Background</h4>Trace elements have been hypothesised to be involved in the pathogenesis of Multiple Sclerosis and volcanic degassing is the major natural sources of trace elements. Both incidence of Multiple Sclerosis in Catania and volcanic activity of Mount Etna have been significantly increased during the last 30 years. Due to prevailing trade winds direction, volcanic gases from Etna summit craters are mostly blown towards the eastern and southern sectors of the volcano.<h4>Objective</h4>To evaluate the possible association between Multiple Sclerosis and exposure to volcanogenic trace elements.<h4>Methods</h4>We evaluated prevalence and incidence of Multiple Sclerosis in four communities (47,234 inhabitants) located in the eastern flank and in two communities (52,210 inhabitants) located in the western flank of Mount Etna, respectively the most and least exposed area to crater gas emissions.<h4>Results</h4>A higher prevalence was found in the population of the eastern flank compared to the population of the western one (137.6/100,000 versus 94.3/100,000; p-value 0.04). We found a borderline significantly higher incidence risk during the incidence study period (1980-2009) in the population of the eastern flank 4.6/100,000 (95% CI 3.1-5.9), compared with the western population 3.2/100,000 (95% CI 2.4-4.2) with a RR of 1.41 (95% CI 0.97-2.05; p-value 0.06). Incidence risks have increased over the time in both populations reaching a peak of 6.4/100,000 in the eastern flank and of 4.4/100.000 in the western flank during 2000-2009.<h4>Conclusion</h4>We found a higher prevalence and incidence of Multiple Sclerosis among populations living in the eastern flank of Mount Etna. According to our data a possible role of TE cannot be ruled out as possible co-factor in the MS pathogenesis. However larger epidemiological study are needed to confirm this hypothesis.
format article
author Alessandra Nicoletti
Elisa Bruno
Martina Nania
Edoardo Cicero
Silvia Messina
Clara Chisari
Josita Torrisi
Davide Maimone
Roberto Marziolo
Salvatore Lo Fermo
Francesco Patti
Salvatore Giammanco
Mario Zappia
author_facet Alessandra Nicoletti
Elisa Bruno
Martina Nania
Edoardo Cicero
Silvia Messina
Clara Chisari
Josita Torrisi
Davide Maimone
Roberto Marziolo
Salvatore Lo Fermo
Francesco Patti
Salvatore Giammanco
Mario Zappia
author_sort Alessandra Nicoletti
title Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.
title_short Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.
title_full Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.
title_fullStr Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.
title_full_unstemmed Multiple Sclerosis in the Mount Etna region: possible role of volcanogenic trace elements.
title_sort multiple sclerosis in the mount etna region: possible role of volcanogenic trace elements.
publisher Public Library of Science (PLoS)
publishDate 2013
url https://doaj.org/article/bfe80f1c6b3c4f4b8dac4b7aa901d8b2
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