{"id":4620,"date":"2023-03-03T14:54:23","date_gmt":"2023-03-03T13:54:23","guid":{"rendered":"https:\/\/inci.neuro.unistra.fr\/?page_id=4620"},"modified":"2024-03-19T07:15:22","modified_gmt":"2024-03-19T06:15:22","slug":"interactions-synaptiques-dans-les-circuits-du-bulbe-olfactif","status":"publish","type":"page","link":"https:\/\/inci.neuro.unistra.fr\/?page_id=4620","title":{"rendered":"Interactions synaptiques dans les circuits du bulbe olfactif"},"content":{"rendered":"\t\t
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Interactions synaptiques dans les circuits du bulbe olfactif<\/strong><\/a><\/p>\n

Didier Desaintjan<\/em>
\n<\/strong><\/p>\n<\/div>\n\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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\n\t\t\t\t\t<\/span>\n<\/a>  ⇨  Les \u00e9quipes<\/a>  ⇨  Physiologie des r\u00e9seaux neuronaux<\/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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\"\"
Didier Desaintjan<\/span><\/figcaption><\/figure>

Mon groupe cherche \u00e0 comprendre l\u2019organisation synaptique et le fonctionnement du bulbe olfactif, la r\u00e9gion du cerveau o\u00f9 projettent les neurones sensoriels olfactifs qui d\u00e9tectent les odeurs dans les cavit\u00e9s nasales. Ces entr\u00e9es ont lieu dans les glom\u00e9rules, des structures anatomiques sph\u00e9riques dans lesquels les neurones sensoriels olfactifs \u00e9tablissent des synapses avec les cellules de projection du bulbe olfactif, les cellules mitrales et les cellules \u00e0 panache. L\u2019int\u00e9gration et la transformation de ces entr\u00e9es olfactives est modul\u00e9e par diverses types d\u2019interneurones inhibiteurs qui constituent 90% des neurones du bulbe olfactif.<\/p>

Nous avons par le pass\u00e9 d\u00e9crit les interactions synaptiques excitatrices qui g\u00e9n\u00e8rent la r\u00e9ponse synaptique des cellules mitrales et des cellules \u00e0 panache (De Saint Jan and Westbrook, JNeurosci 2007; De Saint Jan et al., JNeurosci 2009; Najac et al., JNeurosci 2011<\/em>).<\/strong><\/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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\"\"<\/a>
Axones GABAergiques en provenance du t\u00e9lenc\u00e9phale basal (en rouge) innervant trois glom\u00e9rules d\u00e9limit\u00e9s par les cellules p\u00e9riglom\u00e9rulaires exprimant la calr\u00e9tinine (en blanc).<\/figcaption><\/figure>

Aujourd\u2019hui, nous nous int\u00e9ressons \u00e0 l\u2019organisation et \u00e0 la fonction des circuits inhibiteurs intraglom\u00e9rulaires, \u00e0 la diversit\u00e9 des interneurones p\u00e9riglom\u00e9rulaires mis en jeu et \u00e0 leur modulation par les projections en provenance du t\u00e9lenc\u00e9phale basal. Nos travaux ont mis en lumi\u00e8re le principal circuit d\u2019inhibition intraglom\u00e9rulaire (Najac et al., JNeurosci 2015<\/em><\/strong>), d\u00e9voil\u00e9 les propri\u00e9t\u00e9s des neurones p\u00e9riglom\u00e9rulaires exprimant la calr\u00e9tinine (Benito et al., JNeurosci 2018<\/em><\/strong>) et r\u00e9v\u00e9l\u00e9 la modulation des cellules p\u00e9riglom\u00e9rulaires par les projections GABAergiques du t\u00e9lenc\u00e9phale basal (Sanz Diez et al., JPhysiol 2019<\/em><\/strong>). Nous avons enfin d\u00e9couvert une nouvelle classe de cellule p\u00e9riglom\u00e9rulaire, cible privil\u00e9gi\u00e9e d\u2019entr\u00e9es synaptiques cholinergiques qui activent des r\u00e9cepteurs muscariniques M1 (De Saint Jan, eLife, 2022<\/em><\/strong>).<\/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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P<\/b>ublications choisies<\/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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Target-specific control of olfactory bulb periglomerular cells by GABAergic and cholinergic basal forebrain inputs<\/a>.
De Saint Jan D.\u00a0eLife.<\/em><\/strong>\u00a02022 Feb 28;11:e71965. Link<\/a><\/p>

Basal forebrain GABAergic innervation of olfactory bulb periglomerular interneurons.<\/a>
Sanz Diez A, Najac M, De Saint Jan D.\u00a0J Physiol.<\/em><\/strong>\u00a02019 May;597(9):2547-2563. Link<\/a><\/p>

A Pool of Postnatally Generated Interneurons Persists in an Immature Stage in the Olfactory Bulb.<\/a>
Benito N, Gaborieau E, Sanz Diez A, Kosar S, Foucault L, Raineteau O, De Saint Jan D.\u00a0J Neurosci.<\/em><\/strong> 2018 Nov 14;38(46):9870-9882.<\/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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  ⇨  Les \u00e9quipes  ⇨  Physiologie des r\u00e9seaux neuronaux Pr\u00e9sentation Mon groupe cherche \u00e0 comprendre l\u2019organisation synaptique et le fonctionnement du bulbe olfactif, la r\u00e9gion du cerveau o\u00f9 projettent les neurones sensoriels olfactifs qui d\u00e9tectent les odeurs dans les cavit\u00e9s nasales. Ces entr\u00e9es ont lieu dans les glom\u00e9rules, des structures anatomiques sph\u00e9riques dans lesquels les neurones sensoriels olfactifs \u00e9tablissent […]<\/p>\n","protected":false},"author":8,"featured_media":0,"parent":2110,"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-4620","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nInteractions synaptiques dans les circuits du bulbe olfactif - 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