NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting
In fish, as in all vertebrates, feeding is regulated by complex interactions between brain and peripheral hormonal signals. Brain signals include neuropeptide Y (NPY) and cocaine-amphetamine-regulated transcript (CART), which induces and decreases food intake, respectively. Cholecystokinin (CCK) is...
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ftmemorialuniv:oai:research.library.mun.ca:9279 2023-10-01T03:57:37+02:00 NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting MacDonald, Erin E. 2008 application/pdf https://research.library.mun.ca/9279/ https://research.library.mun.ca/9279/1/Macdonald_ErinE.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/9279/1/Macdonald_ErinE.pdf MacDonald, Erin E. <https://research.library.mun.ca/view/creator_az/MacDonald=3AErin_E=2E=3A=3A.html> (2008) NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2008 ftmemorialuniv 2023-09-03T06:47:19Z In fish, as in all vertebrates, feeding is regulated by complex interactions between brain and peripheral hormonal signals. Brain signals include neuropeptide Y (NPY) and cocaine-amphetamine-regulated transcript (CART), which induces and decreases food intake, respectively. Cholecystokinin (CCK) is a peripheral hormone produced by the intestine that inhibits appetite. The winter flounder, Pleuronectes americanus (Teleostei) and the winter skate, Raja ocellata (Elasmobranchii) are two bottom-dwelling marine fish species inhabiting the coasts of Newfoundland. Both species undergo seasonal cycles in feeding and growth. Nothing is known about the structure or function of NPY, CART and CCK in these species or about the role that these peptides might have in mediating seasonal feeding patterns. In order to characterize NPY, CART and CCK in winter flounder and winter skate, I have identified cDNAs encoding these hormones in both species using RT-PCR and rapid amplification of cDNA ends (RACE). Tissue distribution studies using RT-PCR show that all three peptides are expressed in brain and peripheral tissues, including gut. Gene expression quantification using real-time RT-PCR indicates that these peptides might be involved in nutritional and seasonal feeding adaptations in these two species. Thesis Newfoundland Memorial University of Newfoundland: Research Repository |
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Memorial University of Newfoundland: Research Repository |
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ftmemorialuniv |
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description |
In fish, as in all vertebrates, feeding is regulated by complex interactions between brain and peripheral hormonal signals. Brain signals include neuropeptide Y (NPY) and cocaine-amphetamine-regulated transcript (CART), which induces and decreases food intake, respectively. Cholecystokinin (CCK) is a peripheral hormone produced by the intestine that inhibits appetite. The winter flounder, Pleuronectes americanus (Teleostei) and the winter skate, Raja ocellata (Elasmobranchii) are two bottom-dwelling marine fish species inhabiting the coasts of Newfoundland. Both species undergo seasonal cycles in feeding and growth. Nothing is known about the structure or function of NPY, CART and CCK in these species or about the role that these peptides might have in mediating seasonal feeding patterns. In order to characterize NPY, CART and CCK in winter flounder and winter skate, I have identified cDNAs encoding these hormones in both species using RT-PCR and rapid amplification of cDNA ends (RACE). Tissue distribution studies using RT-PCR show that all three peptides are expressed in brain and peripheral tissues, including gut. Gene expression quantification using real-time RT-PCR indicates that these peptides might be involved in nutritional and seasonal feeding adaptations in these two species. |
format |
Thesis |
author |
MacDonald, Erin E. |
spellingShingle |
MacDonald, Erin E. NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
author_facet |
MacDonald, Erin E. |
author_sort |
MacDonald, Erin E. |
title |
NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
title_short |
NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
title_full |
NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
title_fullStr |
NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
title_full_unstemmed |
NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
title_sort |
npy, cart and cck identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting |
publisher |
Memorial University of Newfoundland |
publishDate |
2008 |
url |
https://research.library.mun.ca/9279/ https://research.library.mun.ca/9279/1/Macdonald_ErinE.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
https://research.library.mun.ca/9279/1/Macdonald_ErinE.pdf MacDonald, Erin E. <https://research.library.mun.ca/view/creator_az/MacDonald=3AErin_E=2E=3A=3A.html> (2008) NPY, CART and CCK identification in winter flounder (pleuronectes americanus) and winter skate (raja ocellata): molecular cloning, tissue distribution and response to season and fasting. Masters thesis, Memorial University of Newfoundland. |
op_rights |
thesis_license |
_version_ |
1778529412066574336 |