کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4327733 | 1614141 | 2009 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of somatostatin and corticotrophin-releasing hormone immunoreactivity in forebrain neurons projecting to taste-responsive and non-responsive regions of the parabrachial nucleus in rat
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کلمات کلیدی
NSTvBNSTSu5LPBEsupratrigeminal nucleusdBNSTPr5LPBdMe5Mo5PBNPBWMPBventral bed nucleus of the stria terminalisParabrachialDMCSCPCNFKolliker–Fuse nucleus - Kolliker - هسته فیوزAmygdala - آمیگدال، بادامهsuperior cerebellar peduncle - اسب سواری مخچه بزرگthird ventricle - بطن سومoptic tract - دستگاه نوریFacial nerve - عصب صورتfornix - فورنیکسCortex - قشرinsular cortex - قشر ساحلیlocus coeruleus - لوکوس سیرولئوسPVN - مالیات بر ارزش افزودهTaste - مزهparabrachial nucleus - هسته parabrachialBed nucleus - هسته بسترcuneiform nucleus - هسته خمیدهnucleus of the solitary tract - هسته دستگاه انفرادیMesencephalic trigeminal nucleus - هسته سه هسته ای Mesencephalicmotor trigeminal nucleus - هسته سه هسته ای موتورmedial parabrachial nucleus - هسته پاراباژیالی Medialparaventricular nucleus - هسته پروژسترویکHypothalamus - هیپوتالاموسlateral hypothalamus - هیپوتالاموس جانبیanterior commissure - کمربند قدامیinternal capsule - کپسول داخلی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Several forebrain areas have been shown to project to the parabrachial nucleus (PBN) and exert inhibitory and excitatory influences on taste processing. The neurochemicals by which descending forebrain inputs modulate neural taste-evoked responses remain to be established. This study investigated the existence of somatostatin (SS) and corticotrophin-releasing factor (CRF) in forebrain neurons that project to caudal regions of the PBN responsive to chemical stimulation of the anterior tongue as well as more rostral unresponsive regions. Retrograde tracer was iontophoretically or pressure ejected from glass micropipettes, and 7 days later the animals were euthanized for subsequent immunohistochemical processing for co-localization of tracer with SS and CRF in tissue sections containing the lateral hypothalamus (LH), central nucleus of the amygdala (CeA), bed nucleus of the stria terminalis (BNST), and insular cortex (IC). In each forebrain site, robust labeling of cells with distinguishable nuclei and short processes was observed for SS and CRF. The results indicate that CRF neurons in each forebrain site send projections throughout the rostral caudal extent of the PBN with a greater percentage terminating in regions rostral to the anterior tongue-responsive area. For SS, the percentage of double-labeled neurons was more forebrain site specific in that only BNST and CeA exhibited significant numbers of double-labeled neurons. Few retrogradely labeled cells in LH co-expressed SS, while no double-labeled cells were observed in IC. Again, tracer injections into rostral PBN resulted in a greater percentage of double-labeled neurons in BNST and CeA compared to caudal injections. The present results suggest that some sources of descending forebrain input might utilize somatostatin and/or CRF to exert a broad influence on sensory information processing in the PBN.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1298, 28 October 2009, Pages 57-69
Journal: Brain Research - Volume 1298, 28 October 2009, Pages 57-69
نویسندگان
Siva Panguluri, Shalini Saggu, Robert Lundy,