{"id":19661,"date":"2024-02-02T08:04:39","date_gmt":"2024-02-02T07:04:39","guid":{"rendered":"https:\/\/inci.neuro.unistra.fr\/?page_id=19661"},"modified":"2024-03-19T07:30:00","modified_gmt":"2024-03-19T06:30:00","slug":"effets-des-champs-magnetiques-et-electromagnetiques-sur-les-rythmes-circadiens","status":"publish","type":"page","link":"https:\/\/inci.neuro.unistra.fr\/?page_id=19661","title":{"rendered":"Effets des champs magn\u00e9tiques et \u00e9lectromagn\u00e9tiques sur les rythmes circadiens"},"content":{"rendered":"\t\t
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Effets des champs magn\u00e9tiques et \u00e9lectromagn\u00e9tiques sur les rythmes circadiens<\/b><\/strong><\/a><\/p>\n

Herv\u00e9 Cadiou, Yannick Menger, Guillaume Reho<\/em>
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\n\t\t\t\t\t<\/span>\n<\/a>  ⇨  Les \u00e9quipes<\/a>  ⇨  R\u00e9gulation et perturbation des rythmes neuroendocrines<\/a>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Pr\u00e9sentation<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Les exp\u00e9riences men\u00e9es au laboratoire montrent une variation circadienne du comportement d\u2019orientation par rapport au champ magn\u00e9tique terrestre chez les planaires. En outre, ces animaux montrent une sensibilit\u00e9 extra-oculaire \u00e0 la lumi\u00e8re bleue. Un de nos projets de recherche consiste donc \u00e0 explorer la perturbation des rythmes circadiens en utilisant ce mod\u00e8le simple. Ax\u00e9s autour des effets du jet-chronique, nous observerons l\u2019activit\u00e9 locomotrice, la synth\u00e8se de m\u00e9latonine et l\u2019expression des g\u00e8nes horloge.<\/p>

La plupart des animaux sont capables de d\u00e9tecter le champ g\u00e9omagn\u00e9tique et cette facult\u00e9 est appel\u00e9\u00e9 magn\u00e9tor\u00e9ception (Cadiou et al., J R Soc Interface, 2010; Bellinger et al., Proc Natl Acad Sci USA, 2022)<\/em>. En plus de son r\u00f4le dans l\u2019orientation et la navigation, la magn\u00e9tor\u00e9ception est impliqu\u00e9e dans la synchronisaton de l\u2019horloge circadienne (Tang et al., Chronobiol Int, 2022)<\/em> comme le montre la figure ci-dessous.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Figure Y: Magn\u00e9toreception. Le champ magn\u00e9tique est produit principalement par le noyau de la terre et celui-ci est assimilable \u00e0 un dip\u00f4le (A). Du fait des interractions du champ magn\u00e9tique terrestre avec le vent solaire, celui-ci montre des variations circadiennes (B). Les animaux per\u00e7oivent le champ magn\u00e9tique terrestre soit par une r\u00e9action photochimique ayant lieu dans l\u2019\u0153il (C) soit par le biais de cristaux de magn\u00e9tiques biog\u00e9niques pr\u00e9sents dans des cellules sp\u00e9cialis\u00e9es (D). La magn\u00e9tor\u00e9ception est impliqu\u00e9e dans l\u2019orientation et la navigation animale (E) et comme zeitgeber (F).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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D’un autre c\u00f4t\u00e9, il a \u00e9t\u00e9 montr\u00e9 que les champs magn\u00e9tiques statiques, les radiofr\u00e9quences et les champs \u00e9lectromagn\u00e9tiques de basses fr\u00e9quences interf\u00e8rent avec la magnetor\u00e9ception (Engels et al., Nature 2014)<\/em> et les rythmes circadiens (Tang et al., Chronobiol Int, 2022)<\/em>. Commes les planaires ont \u00e9t\u00e9 d\u00e9montr\u00e9es comme \u00e9tant particuli\u00e8rement magn\u00e9tosensibles (Reho et al., 2022)<\/em>, ces animaux seront utilis\u00e9es pour \u00e9tudier l\u2019effet des champs magn\u00e9tiques et \u00e9lectromagn\u00e9tiques sur les rythmes circadiens. L\u2019activit\u00e9 locomotrice, la production m\u00e9latonine et l\u2019expression des g\u00e8nes horloges comme timeless seront \u00e9tudi\u00e9s. L\u2019\u00e9tude des m\u00e9canismes mol\u00e9culaires derri\u00e8re la magn\u00e9tor\u00e9ception dans le laboratoire est financ\u00e9 par l\u2019ANR.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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M<\/b>embres de l'\u00e9quipe<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\"herve-cadiou-90x110\"<\/figure>

Herv\u00e9 Cadiou<\/h2><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\"anonyme-214x300\"<\/figure>

Yannick Menger<\/h2><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\"anonyme-214x300\"<\/figure>

Guillaume Reho<\/h2><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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  ⇨  Les \u00e9quipes  ⇨  R\u00e9gulation et perturbation des rythmes neuroendocrines Pr\u00e9sentation Les exp\u00e9riences men\u00e9es au laboratoire montrent une variation circadienne du comportement d\u2019orientation par rapport au champ magn\u00e9tique terrestre chez les planaires. En outre, ces animaux montrent une sensibilit\u00e9 extra-oculaire \u00e0 la lumi\u00e8re bleue. Un de nos projets de recherche consiste donc \u00e0 explorer la perturbation des rythmes […]<\/p>\n","protected":false},"author":10,"featured_media":0,"parent":19162,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","omw_enable_modal_window":"enable","footnotes":""},"class_list":["post-19661","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nEffets des champs magn\u00e9tiques et \u00e9lectromagn\u00e9tiques sur les rythmes circadiens - Institut des Neurosciences Cellulaires et Int\u00e9gratives<\/title>\n<meta name=\"description\" content=\"Les exp\u00e9riences men\u00e9es au laboratoire montrent une variation circadienne du comportement d\u2019orientation par rapport au champ magn\u00e9tique terrestre chez les planaires. 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