Differential patterns of neuronal activation in the brainstem and hypothalamus following peripheral injection of GLP-1, oxyntomodulin and lithium chloride in mice detected by manganese-enhanced magnetic resonance imaging (MEMRI)
We have used manganese-enhanced magnetic resonance imaging (MEMRI) to show distinct patterns of neuronal activation within the hypothalamus and brainstem of fasted mice in response to peripheral injection of the anorexigenic agents glucagon-like peptide-1 (GLP-1), oxyntomodulin (OXM) and lithium chl...
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| Veröffentlicht in: | NeuroImage (Orlando, Fla.) Fla.), 2009-02, Vol.44 (3), p.1022-1031 |
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| creator | Parkinson, James R.C. Chaudhri, Owais B. Kuo, Yu-Ting Field, Benjamin C.T. Herlihy, Amy H. Dhillo, Waljit S. Ghatei, Mohammad A. Bloom, Stephen R. Bell, Jimmy D. |
| description | We have used manganese-enhanced magnetic resonance imaging (MEMRI) to show distinct patterns of neuronal activation within the hypothalamus and brainstem of fasted mice in response to peripheral injection of the anorexigenic agents glucagon-like peptide-1 (GLP-1), oxyntomodulin (OXM) and lithium chloride. Administration of both GLP-1 and OXM resulted in a significant increase in signal intensity (SI) in the area postrema of fasted mice, reflecting an increase in neuronal activity within the brainstem. In the hypothalamus, GLP-1 administration induced a significant reduction in SI in the paraventricular nucleus and an increase in the ventromedial hypothalamic nucleus whereas OXM reduced SI in the arcuate and supraoptic nuclei of the hypothalamus. These data indicate that whilst these related peptides both induce a similar effect on neuronal activity in the brainstem they generate distinct patterns of activation within the hypothalamus. Furthermore, the hypothalamic pattern of signal intensity generated by GLP-1 closely matches that generated by peripheral injection of LiCl, suggesting the anorexigenic effects of GLP-1 may be in part transmitted via nausea circuits. This work provides a framework by which the temporal effects of appetite modulating agents can be recorded simultaneously within hypothalamic and brainstem feeding centres. |
| doi_str_mv | 10.1016/j.neuroimage.2008.09.047 |
| format | Article |
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Administration of both GLP-1 and OXM resulted in a significant increase in signal intensity (SI) in the area postrema of fasted mice, reflecting an increase in neuronal activity within the brainstem. In the hypothalamus, GLP-1 administration induced a significant reduction in SI in the paraventricular nucleus and an increase in the ventromedial hypothalamic nucleus whereas OXM reduced SI in the arcuate and supraoptic nuclei of the hypothalamus. These data indicate that whilst these related peptides both induce a similar effect on neuronal activity in the brainstem they generate distinct patterns of activation within the hypothalamus. Furthermore, the hypothalamic pattern of signal intensity generated by GLP-1 closely matches that generated by peripheral injection of LiCl, suggesting the anorexigenic effects of GLP-1 may be in part transmitted via nausea circuits. This work provides a framework by which the temporal effects of appetite modulating agents can be recorded simultaneously within hypothalamic and brainstem feeding centres.</description><identifier>ISSN: 1053-8119</identifier><identifier>EISSN: 1095-9572</identifier><identifier>DOI: 10.1016/j.neuroimage.2008.09.047</identifier><identifier>PMID: 18983926</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Animals ; Appetite ; Appetite Stimulants - administration & dosage ; Biomedical research ; Brain Mapping - methods ; Brain Stem - drug effects ; Brain Stem - physiology ; Chlorides ; Contrast Media ; Glucagon-Like Peptide 1 - administration & dosage ; Glucagon-like peptide-1 ; Gut peptides ; Hypothalamus ; Hypothalamus - drug effects ; Hypothalamus - physiology ; Image Enhancement - methods ; Injections ; Lithium chloride ; Lithium Chloride - administration & dosage ; Magnetic Resonance Imaging - methods ; Male ; Manganese ; Manganese Compounds ; Mice ; Mice, Inbred C57BL ; Mn2 ; MRI ; Nerve Net - drug effects ; Nerve Net - physiology ; Neurons - physiology ; NMR ; Nuclear magnetic resonance ; Obesity ; Oxyntomodulin ; Oxyntomodulin - administration & dosage ; Peptides ; Proglucagon ; Rodents ; Signal transduction ; Studies</subject><ispartof>NeuroImage (Orlando, Fla.), 2009-02, Vol.44 (3), p.1022-1031</ispartof><rights>2008 Elsevier Inc.</rights><rights>Copyright Elsevier Limited Feb 1, 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c431t-a68b8a0767b25cca4f008bf5c0956b292f79ac9ce44dd820c1199ec1f14f974b3</citedby><cites>FETCH-LOGICAL-c431t-a68b8a0767b25cca4f008bf5c0956b292f79ac9ce44dd820c1199ec1f14f974b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1053811908010434$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18983926$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Parkinson, James R.C.</creatorcontrib><creatorcontrib>Chaudhri, Owais B.</creatorcontrib><creatorcontrib>Kuo, Yu-Ting</creatorcontrib><creatorcontrib>Field, Benjamin C.T.</creatorcontrib><creatorcontrib>Herlihy, Amy H.</creatorcontrib><creatorcontrib>Dhillo, Waljit S.</creatorcontrib><creatorcontrib>Ghatei, Mohammad A.</creatorcontrib><creatorcontrib>Bloom, Stephen R.</creatorcontrib><creatorcontrib>Bell, Jimmy D.</creatorcontrib><title>Differential patterns of neuronal activation in the brainstem and hypothalamus following peripheral injection of GLP-1, oxyntomodulin and lithium chloride in mice detected by manganese-enhanced magnetic resonance imaging (MEMRI)</title><title>NeuroImage (Orlando, Fla.)</title><addtitle>Neuroimage</addtitle><description>We have used manganese-enhanced magnetic resonance imaging (MEMRI) to show distinct patterns of neuronal activation within the hypothalamus and brainstem of fasted mice in response to peripheral injection of the anorexigenic agents glucagon-like peptide-1 (GLP-1), oxyntomodulin (OXM) and lithium chloride. Administration of both GLP-1 and OXM resulted in a significant increase in signal intensity (SI) in the area postrema of fasted mice, reflecting an increase in neuronal activity within the brainstem. In the hypothalamus, GLP-1 administration induced a significant reduction in SI in the paraventricular nucleus and an increase in the ventromedial hypothalamic nucleus whereas OXM reduced SI in the arcuate and supraoptic nuclei of the hypothalamus. These data indicate that whilst these related peptides both induce a similar effect on neuronal activity in the brainstem they generate distinct patterns of activation within the hypothalamus. Furthermore, the hypothalamic pattern of signal intensity generated by GLP-1 closely matches that generated by peripheral injection of LiCl, suggesting the anorexigenic effects of GLP-1 may be in part transmitted via nausea circuits. This work provides a framework by which the temporal effects of appetite modulating agents can be recorded simultaneously within hypothalamic and brainstem feeding centres.</description><subject>Animals</subject><subject>Appetite</subject><subject>Appetite Stimulants - administration & dosage</subject><subject>Biomedical research</subject><subject>Brain Mapping - methods</subject><subject>Brain Stem - drug effects</subject><subject>Brain Stem - physiology</subject><subject>Chlorides</subject><subject>Contrast Media</subject><subject>Glucagon-Like Peptide 1 - administration & dosage</subject><subject>Glucagon-like peptide-1</subject><subject>Gut peptides</subject><subject>Hypothalamus</subject><subject>Hypothalamus - drug effects</subject><subject>Hypothalamus - physiology</subject><subject>Image Enhancement - methods</subject><subject>Injections</subject><subject>Lithium chloride</subject><subject>Lithium Chloride - administration & dosage</subject><subject>Magnetic Resonance Imaging - 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Academic</collection><jtitle>NeuroImage (Orlando, Fla.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Parkinson, James R.C.</au><au>Chaudhri, Owais B.</au><au>Kuo, Yu-Ting</au><au>Field, Benjamin C.T.</au><au>Herlihy, Amy H.</au><au>Dhillo, Waljit S.</au><au>Ghatei, Mohammad A.</au><au>Bloom, Stephen R.</au><au>Bell, Jimmy D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Differential patterns of neuronal activation in the brainstem and hypothalamus following peripheral injection of GLP-1, oxyntomodulin and lithium chloride in mice detected by manganese-enhanced magnetic resonance imaging (MEMRI)</atitle><jtitle>NeuroImage (Orlando, Fla.)</jtitle><addtitle>Neuroimage</addtitle><date>2009-02-01</date><risdate>2009</risdate><volume>44</volume><issue>3</issue><spage>1022</spage><epage>1031</epage><pages>1022-1031</pages><issn>1053-8119</issn><eissn>1095-9572</eissn><abstract>We have used manganese-enhanced magnetic resonance imaging (MEMRI) to show distinct patterns of neuronal activation within the hypothalamus and brainstem of fasted mice in response to peripheral injection of the anorexigenic agents glucagon-like peptide-1 (GLP-1), oxyntomodulin (OXM) and lithium chloride. Administration of both GLP-1 and OXM resulted in a significant increase in signal intensity (SI) in the area postrema of fasted mice, reflecting an increase in neuronal activity within the brainstem. In the hypothalamus, GLP-1 administration induced a significant reduction in SI in the paraventricular nucleus and an increase in the ventromedial hypothalamic nucleus whereas OXM reduced SI in the arcuate and supraoptic nuclei of the hypothalamus. These data indicate that whilst these related peptides both induce a similar effect on neuronal activity in the brainstem they generate distinct patterns of activation within the hypothalamus. Furthermore, the hypothalamic pattern of signal intensity generated by GLP-1 closely matches that generated by peripheral injection of LiCl, suggesting the anorexigenic effects of GLP-1 may be in part transmitted via nausea circuits. This work provides a framework by which the temporal effects of appetite modulating agents can be recorded simultaneously within hypothalamic and brainstem feeding centres.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>18983926</pmid><doi>10.1016/j.neuroimage.2008.09.047</doi><tpages>10</tpages></addata></record> |
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| subjects | Animals Appetite Appetite Stimulants - administration & dosage Biomedical research Brain Mapping - methods Brain Stem - drug effects Brain Stem - physiology Chlorides Contrast Media Glucagon-Like Peptide 1 - administration & dosage Glucagon-like peptide-1 Gut peptides Hypothalamus Hypothalamus - drug effects Hypothalamus - physiology Image Enhancement - methods Injections Lithium chloride Lithium Chloride - administration & dosage Magnetic Resonance Imaging - methods Male Manganese Manganese Compounds Mice Mice, Inbred C57BL Mn2 MRI Nerve Net - drug effects Nerve Net - physiology Neurons - physiology NMR Nuclear magnetic resonance Obesity Oxyntomodulin Oxyntomodulin - administration & dosage Peptides Proglucagon Rodents Signal transduction Studies |
| title | Differential patterns of neuronal activation in the brainstem and hypothalamus following peripheral injection of GLP-1, oxyntomodulin and lithium chloride in mice detected by manganese-enhanced magnetic resonance imaging (MEMRI) |
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