The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Ghrelin-Induced Food Intake Is Mediated via the Orexin Pathway
Abstract
The hypothalamus regulates energy intake by integrating the degree of starvation or satiation with the status of the environment through a variety of neuronal and blood-derived signals. Ghrelin, a peptide produced in the stomach and hypothalamus, stimulates feeding and GH secretion. Centrally administered ghrelin exerts an orexigenic activity through the neuropeptide Y (NPY) and agouti-related protein systems. The interaction between ghrelin and other hypothalamic orexigenic peptides, however, has not been clarified. Here, we investigated the anatomical interactions and functional relationship between ghrelin and two orexigenic peptides, orexin and melanin-concentrating hormone (MCH), present in the lateral hypothalamus. Ghrelin-immunoreactive axonal terminals made direct synaptic contacts with orexin-producing neurons. Intracerebroventricular administration of ghrelin induced Fos expression, a marker of neuronal activation, in orexin-producing neurons but not in MCH-producing neurons. Ghrelin remained competent to induce Fos expression in orexin-producing neurons following pretreatment with anti-NPY IgG. Pretreatment with anti-orexin-A IgG and anti-orexin-B IgG, but not anti-MCH IgG, attenuated ghrelin-induced feeding. Administration of NPY receptor antagonist further attenuated ghrelin-induced feeding in rats treated with anti-orexin-IgGs. Ghrelin-induced feeding was also suppressed in orexin knockout mice. This study identifies a novel hypothalamic pathway that links ghrelin and orexin in the regulation of feeding behavior and energy homeostasis.
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Cites
Ghrelin is a growth-hormone-releasing acylated peptide from stomach
Kojima, M., Hosoda, H., Date, Y., Nakazato, M., Matsuo, H., & Kangawa, K. (1999) · Nature · doi:10.1038/45230 · Cited by 8,479
Self-citationSakurai, T., Amemiya, A., Ishii, M., Matsuzaki, I., Chemelli, R. M., Tanaka, H., Williams, S. C., Richardson, J. A., Kozlowski, G. P., Wilson, S., et al. (1998) · Cell · doi:10.1016/s0092-8674(00)80949-6 · Cited by 5,501
Self-citationThe hypocretins: hypothalamus-specific peptides with neuroexcitatory activity
de Lecea, L., Kilduff, T. S., Peyron, C., Gao, X.-B., Foye, P. E., Danielson, P. E., Fukuhara, C., Battenberg, E. L. F., Gautvik, V. T., Bartlett, F. S., et al. (1998) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.95.1.322 · Cited by 3,878
A role for ghrelin in the central regulation of feeding
Nakazato, M., Murakami, N., Date, Y., Kojima, M., Matsuo, H., Kangawa, K., & Matsukura, S. (2001) · Nature · doi:10.1038/35051587 · Cited by 3,443 · cited 10×
“Although the mechanism of ghrelin's orexigenic activity is related to the NPY and AgRP pathways (6, 7, 24), the interaction of ghrelin with other energy-regulating systems is unclear.”
BackgroundInfluentialSelf-citationNarcolepsy in orexin Knockout Mice
Chemelli, R. M., Willie, J. T., Sinton, C. M., Elmquist, J. K., Scammell, T., Lee, C., Richardson, J. A., Williams, S. C., Xiong, Y., Kisanuki, Y., et al. (1999) · Cell · doi:10.1016/s0092-8674(00)81973-x · Cited by 3,095
Self-citationExpression of c- fos Protein in Brain: Metabolic Mapping at the Cellular Level
Sagar, S. M., Sharp, F. R., & Curran, T. (1988) · Science · doi:10.1126/science.3131879 · Cited by 1,925
Coexpression of Agrp and NPY in fasting-activated hypothalamic neurons
Hahn, T. M., Breininger, J. F., Baskin, D. G., & Schwartz, M. W. (1998) · Nature Neuroscience · doi:10.1038/1082 · Cited by 1,164
Cited by
Ghrelin: Structure and Function
Kojima, M., & Kangawa, K. (2005) · Physiological Reviews · doi:10.1152/physrev.00012.2004 · Cited by 2,810
Self-citationThe role of leptin and ghrelin in the regulation of food intake and body weight in humans: a review
Klok, M. D., Jakobsdottir, S., & Drent, M. L. (2007) · Obesity Reviews · doi:10.1111/j.1467-789x.2006.00270.x · Cited by 1,442
Abizaid, A., Liu, Z.-W., Andrews, Z. B., Shanabrough, M., Borok, E., Elsworth, J. D., Roth, R. H., Sleeman, M. W., Picciotto, M. R., Tschöp, M. H., et al. (2006) · Journal of Clinical Investigation · doi:10.1172/jci29867 · Cited by 984
Hormonal regulation of food intake
Stanley, S., Wynne, K., McGowan, B., & Bloom, S. (2005) · Physiological Reviews · doi:10.1152/physrev.00015.2004 · Cited by 372
Neurobiology of Feeding and Energy Expenditure
Gao, Q., & Horvath, T. L. (2007) · Annual Review of Neuroscience · doi:10.1146/annurev.neuro.30.051606.094324 · Cited by 346
Metadata
- Authors
- Toshinai, K., Date, Y., Murakami, N., Shimada, M., Mondal, M. S., Shimbara, T., Guan, J.-L., Wang, Q.-P., Funahashi, H., Sakurai, T., Shioda, S., Matsukura, S., Kangawa, K., & Nakazato, M.
- Venue
- Endocrinology
- Publisher
- The Endocrine Society
- Published
- 2003-04-01
- Volume
- 144
- Issue
- 4
- Pages
- 1506-1512
- ISSN
- 0013-7227 (ISSN-L)
- 1945-7170
- OpenAlex
- W2171376440
- Cited by
- 462
- References
- 7
- FWCI
- 13.18
- Type
- journal article
- Language
- en
- Open access
- closed
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