{"id":20325,"date":"2024-02-16T08:06:54","date_gmt":"2024-02-16T07:06:54","guid":{"rendered":"https:\/\/inci.neuro.unistra.fr\/?page_id=20325"},"modified":"2024-03-19T07:34:14","modified_gmt":"2024-03-19T06:34:14","slug":"dd-4","status":"publish","type":"page","link":"https:\/\/inci.neuro.unistra.fr\/?page_id=20325&lang=en","title":{"rendered":"Effects of magnetic and electromagnetic fields on circadian rhythms"},"content":{"rendered":"\t\t
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Effects of magnetic and electromagnetic fields on circadian rhythms<\/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>  ⇨  The teams<\/a>  ⇨  Regulation and disruption of neuroendocrine rhythms<\/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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Presentation<\/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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Experiments carried out in the lab have shown a strong circadian time-dependency of orientation behavior in planarians. Furthermore, planarians display light sensitivity especially towards short wavelength and are also able to detect light through extraocular cells. Therefore we intend to use this simple animal model to get new insights in the basic mechanisms of chronodisruption. Our objective is to study the effects of chronic jet-lag and light at night on three planarian rhythmic outputs: locomotor\/heading behaviors, melatonin synthesis and clock gene expression.<\/p>

Most organisms are able to sense the geomagnetic field and this sense is called magnetoreception (Cadiou et al., J R Soc Interface, 2010; Bellinger et al., Proc Natl Acad Sci USA, 2022)<\/em>. Besides to its role in orientation, navigation and in alignment, the geomagnetic field has been proposed as a zeitgeber (Tang et al., Chronobiol Int, 2022)<\/em> as the following figure shows.<\/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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On the other hand, static magnetic fields, radiofrequencies, and extreme low frequencies have been shown to interfere with magnetoreception (Engels et al., Nature 2014) and circadian rhythms (Tang et al., Chronobiol Int, 2022)<\/em>. As planarians are particularly magnetosensitive animals (Reho et al., 2022)<\/em>, they will be used as an animal model to study the effects of magnetic and electromagnetic fields on various circadian rhythms and using the following parameters: i) the locomotor activity and the orientation preference, ii) melatonin production which peaks during the night phase as in most vertebrates, and iii) the expression of the timeless gene that increases during night time. Magnetoreception and its molecular mechanisms is a project funded by a an ANR\/DFG grant until 2025 and further funding has been requested to investigate the role of the geomagnetic field as a zeitgeber.<\/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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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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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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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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  ⇨  The teams  ⇨  Regulation and disruption of neuroendocrine rhythms Presentation Experiments carried out in the lab have shown a strong circadian time-dependency of orientation behavior in planarians. Furthermore, planarians display light sensitivity especially towards short wavelength and are also able to detect light through extraocular cells. Therefore we intend to use this simple animal model to get […]<\/p>\n","protected":false},"author":10,"featured_media":0,"parent":20097,"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-20325","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nEffects of magnetic and electromagnetic fields on circadian rhythms - Institut des Neurosciences Cellulaires et Int\u00e9gratives<\/title>\n<meta name=\"description\" content=\"Experiments carried out in the lab have shown a strong circadian time-dependency of orientation behavior in planarians. 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