Cited by 96Regulation of Appetite and ObesityOlfactory and Sensory Function StudiesHypothalamic control of reproductive hormones

Leptin regulates olfactory-mediated behavior in ob/ob mice

Getchell, Thomas V., Kwong, Kevin, Saunders, Christopher P., Stromberg, Arnold J., Getchell, Marilyn L.·2006·Physiology & Behavior

Abstract

We have investigated olfactory-mediated pre-ingestive behavior in leptin (ob/ob) and leptin receptor (db/db) mutant mice compared to age- and gender-matched wild-type (wt) mice. Olfactory-mediated behavior was tested using a buried food paradigm 5 times/day at 2-h intervals for 6 days. Mean food-finding times of ob/ob and db/db mice were approximately 10 times shorter than those of wt mice. To test the effect of leptin replacement in ob/ob mice, leptin (1 or 5 microg/g body weight in sterile saline) or carrier was injected i.p. once daily prior to testing. Mean food finding times in ob/ob mice injected with carrier or with 1 microg/g leptin were similar and were 2-3 times faster than in wt mice. Mean food finding times in ob/ob mice injected with 5 microg/g leptin tripled compared to carrier-injected ob/ob mice and were of the same order of magnitude as those of wt mice, suggesting functional leptin replacement. A 3-factor repeated measures ANOVA demonstrated significant differences between the 6 cohorts (P = 0.0001), food finding times (P< or = 0.0001), and cohort by day interaction (P< or = 0.0001). Post hoc tests suggested that the ob/ob+5 mug/g leptin cohort performed more like the wt cohort in the food-finding test than like the ob/ob or ob/ob+carrier cohort. Potential local sites of leptin production and action were identified with immunohistochemistry and in situ hybridization in epithelial and gland cells of the olfactory and nasal mucosae. Our results strongly suggest that leptin acting through leptin receptors modulates olfactory-mediated pre-ingestive behavior.

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Crossref · 10.1016/j.physbeh.2005.11.016

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  • In rodents, absence of leptin increases and addition of leptin dampens peripheral taste and olfactory sensitivity.

    “In rodents, absence of leptin has been shown to increase and addition of leptin to dampen peripheral taste and olfactory sensitivity”

    From Food reward, hyperphagia, and obesity (2011) · cites this paper as [66]

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Authors
Getchell, T. V., Kwong, K., Saunders, C. P., Stromberg, A. J., & Getchell, M. L.
Affiliations
University of Kentucky (US)
Corresponding author
Getchell, Thomas V.
Venue
Physiology & Behavior
Publisher
Elsevier BV
Published
2006-05
Volume
87
Issue
5
Pages
848-856
ISSN
0031-9384 (ISSN-L)
OpenAlex
W2005398436
Cited by
96
References
67
Citations by year
2026: 2 · 2024: 2 · 2023: 3 · 2022: 6 · 2021: 5 · 2020: 7 · 2019: 10 · 2018: 4 · 2017: 4 · 2016: 4 · 2015: 3 · 2014: 4 · 2012: 7
FWCI
3.22
Type
journal article
Language
en
Open access
closed
Locations
  • Physiology & Behavior (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1t32dc000065-01)
  • National Institute on Aging (R01-AG016824-25, R01AG016824)
  • National Institute on Deafness and Other Communication Disorders (T32-DC00065-04)
  • National Center for Research Resources (P20RR016481, P20RR020145, P20 RR 16481)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
leptin, ob/ob mice, db/db mice, leptin receptor, leptin replacement, olfactory epithelium, nasal mucosa, leptin signaling
MeSH terms
Animals, Appetitive Behavior, Behavior, Animal, Dose-Response Relationship, Drug, Immunohistochemistry, Male, Mice, Obese, Olfactory Pathways, Receptors, Cell Surface, Smell, Time Factors, In Situ Hybridization, Leptin, Mice, Receptors, Leptin

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