The translocator protein 18 kDa (TSPO) ligand etifoxine in an animal model of anxiety: Line- and sex-dependent effects on emotionality, stress reactivity, spine density, oxytocin receptors, steroids, and microbiome composition

URN zum Zitieren dieses Dokuments:

urn:nbn:de:bvb:355-epub-745799 Copy

DOI zum Zitieren dieses Dokuments:

10.5283/epub.74579 Copy

Fischer, Lilith ; Paschke, Bjarne ; Gareis, Franziska ; Schumacher, Michael ; Liere, Philippe ; Hiergeist, Andreas ; Gessner, André ; Rupprecht, Rainer ; Neumann, Inga D. ; Bosch, Oliver J.

Lizenz: Creative Commons Namensnennung-NichtKommerziell-KeineBearbeitung 4.0 International PDF - Veröffentlichte Version (6MB)

Veröffentlichungsdatum dieses Volltextes: 08 Jan 2025 07:50

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Details

Dokumentenart:	Artikel
Open Access Art:	DEAL (Elsevier)
Titel eines Journals oder einer Zeitschrift:	Neuropharmacology
Verlag:	Elsevier
Band:	266
Seitenbereich:	S. 110282
Datum:	24 Dezember 2024
Institutionen:	Medizin > Lehrstuhl für Medizinische Mikrobiologie und Hygiene Medizin > Lehrstuhl für Psychiatrie und Psychotherapie Biologie und Vorklinische Medizin > Institut für Zoologie > Tierphysiologie/Neurobiologie (Prof. Dr. Inga Neumann)
Sonstige Projekte:	DFG FOR 2858, project number 422183249, DFG GRK2174, DFG 422179811
Identifikationsnummer:	Wert Typ 10.1016/j.neuropharm.2024.110282 DOI
Stichwörter / Keywords:	Anxiety-related behavior, Corticosterone, Etifoxine, Passive stress-coping, Spine density, TSPO
Dewey-Dezimal-Klassifikation:	500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie 500 Naturwissenschaften und Mathematik > 590 Tiere (Zoologie)
Status:	Veröffentlicht
Begutachtet:	Ja, diese Version wurde begutachtet
An der Universität Regensburg entstanden:	Zum Teil
Dokumenten-ID:	74579

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Zusammenfassung

The treatment of stress-related disorders such as anxiety and depression is still challenging. One potential therapeutical option are neurosteroids. Their synthesis is promoted by ligands of the mitochondrial translocator protein 18 kDa (TSPO). We tested the TSPO ligand etifoxine (ETX) in a rat model of hyper-anxiety and depression-like behavior, i.e., in female and male HAB (high anxiety-related ...

Zusammenfassung

The treatment of stress-related disorders such as anxiety and depression is still challenging. One potential therapeutical option are neurosteroids. Their synthesis is promoted by ligands of the mitochondrial translocator protein 18 kDa (TSPO). We tested the TSPO ligand etifoxine (ETX) in a rat model of hyper-anxiety and depression-like behavior, i.e., in female and male HAB (high anxiety-related behavior) rats, as well as in respective low anxiety (LAB) and non-selected control (NAB) rats for behavioral, molecular, cellular, and physiological parameters. Daily acute i.p. treatment with ETX or vehicle over 5 or 9 days revealed that ETX was most effective in female HAB rats; it reduced anxiety levels (5 days) and OXT-R binding brain site-specifically (5 and 9 days), and increased spine density (5 days). The behavioral ETX effect exclusively found in female HABs was accompanied by increased 3β5α-THDOC levels, without any effect in female LABs and NABs and on other neurosteroids. In males of all breeding lines, ETX changed a total of 10 out of 23 brain steroids. Passive stress-coping during 10-min forced swimming was not affected by 9-day treatment with ETX, the resulting stress-induced plasma corticosterone levels were higher in ETX-treated NAB rats of both sexes compared with their VEH-treated groups. The fecal bacterial composition was similar but beta diversity differed between HABs and LABs and from NABs independent of sex; ETX treatment had no effect. Therefore, we propose considering the aspect of sex in treatment strategies for anxiety disorders. This is particularly important to establish better treatment regimens for women.

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