کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4323697 1613808 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemogenetic inhibition of cells in the paramedian midbrain tegmentum increases locomotor activity in rats
ترجمه فارسی عنوان
مهار شبیه سازی سلول ها در تترسموم میانه مغزی پرومدیان باعث افزایش فعالیت حرکتی در موش صحرایی می شود
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
چکیده انگلیسی


• We examined the usefulness of DREADD technology in the median raphe system.
• Chemogenetic inhibition of median raphe neurons increases locomotor activity.
• Chemogenetic inhibition of median raphe neurons increases food intake.
• The time course of the effects indicates rapid onset and short duration.
• DREADD allows for the precise localization of projections from the injection site.

Pronounced hyperactivity can be produced by lesions or pharmacological inhibition of cells in the median raphe nucleus (MR) located in the paramedian midbrain tegmentum. In the current study we examined whether a similar effect can be seen after chemogenetic inhibition of cells in this region using the DREADD (Designer Receptors Exclusively Activated by Designer Drugs) approach. We found that the DREADD ligand clozapine-N-oxide (CNO) increased locomotor activity in animals expressing the inhibitory DREADD hM4Di, but not those injected with a control virus in the MR. The effect was of rapid onset and short duration and persisted for at least four months after virus injections. Histological examination of the brains indicated that labeled fibers followed the known projection patterns of the MR to a variety of forebrain and midbrain structures. These findings confirm the role of the MR region in the control of locomotion and suggest that the DREADD technique may be a useful approach to the study of the functional architecture of this complex area. Methodological and interpretive aspects of DREADD studies are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1632, 1 February 2016, Pages 98–106
نویسندگان
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