Cited by 69Adipose Tissue and MetabolismRadiopharmaceutical Chemistry and ApplicationsMedical Imaging Techniques and Applications

Effect of Nicotine and Ephedrine on the Accumulation of 18F-FDG in Brown Adipose Tissue

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Baba, S., Tatsumi, M., Ishimori, T., Lilien, D. L., Engles, J. M., Wahl, R. L.·2007·Journal of Nuclear Medicine

Abstract

UNLABELLED: This study evaluated the effect of various beta-adrenergic agonists on (18)F-FDG uptake in brown adipose tissue (BAT) in rats using ex vivo biodistribution studies. METHODS: Caffeine (10 mg/kg of body weight, n = 4), ephedrine (5 mg/kg of body weight, n = 4), nicotine (0.8 mg/kg of body weight, n = 9), or a mixture of nicotine and ephedrine (0.8 mg/kg of body weight and 5 mg/kg of body weight, respectively, n = 9) was injected into the peritoneal cavity of female Lewis rats 30 min before intravenous (18)F-FDG injection. One hour after injection of (18)F-FDG, the animals were sacrificed, and BAT, other major organs, and blood were extracted. The biodistribution results were compared with body temperature data. RESULTS: In the rats injected with nicotine or ephedrine, the mean uptake of (18)F-FDG, in percentage injected dose (%ID)/(g of interscapular BAT) x (kg of body weight), was significantly increased (7.9-fold for nicotine and 3.7-fold for ephedrine), compared to the control rats. Nicotine had the strongest effect on (18)F-FDG uptake in BAT. Caffeine increased BAT uptake slightly, but this increase did not reach statistical significance. The combination of nicotine and ephedrine increased the uptake 12.0-fold, compared with control rats; more than either nicotine or ephedrine alone. Uptake of (18)F-FDG in most other major organs did not change significantly. The effect of nicotine was blocked by prior injection of beta-adrenergic antagonists. A transient decrease in body temperature was observed in the nicotine-injected group, and this effect was canceled by prior injection of beta-adrenergic antagonists. No significant change in baseline temperature was seen before or after beta-adrenergic agonist injection. CONCLUSION: Nicotine caused a greater increase in (18)F-FDG uptake in BAT than did other interventions, and the effect was increased when nicotine was combined with ephedrine. The effect of nicotine was completely blocked by prior injection of beta-adrenergic antagonists, indicating that beta-adrenergic agonists increase the metabolism of BAT. These preclinical data suggest that patients should avoid nicotine and ephedrine before undergoing (18)F-FDG PET to minimize (18)F-FDG uptake in BAT.

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  • PET/CT in rats shows that ephedrine's effects on metabolism are mediated at least in part by activation of BAT.

    “PET/CT in rats shows that ephedrine’s effects on metabolism are mediated at least in part by activation of BAT 135.”

    From Cellular bioenergetics as a target for obesity therapy (2010) · cites this paper as [135]

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Authors
Baba, S., Tatsumi, M., Ishimori, T., Lilien, D. L., Engles, J. M., & Wahl, R. L.
Affiliations
  • Johns Hopkins University (US)
  • Kurashiki Central Hospital (JP)
  • Biomedical Research Foundation of Northwest Louisiana (US)
Venue
Journal of Nuclear Medicine
Published
2007-06-01
Volume
48
Issue
6
Pages
981-986
ISSN
0161-5505 (ISSN-L)
OpenAlex
W2132124138
Cited by
69
References
22
Citations by year
2026: 2 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 5 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 4 · 2014: 5 · 2013: 4 · 2012: 3
FWCI
3.51
Type
journal article
Language
en
Open access
Locations
  • Journal of Nuclear Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiopharmaceutical Chemistry and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
Keywords
nicotine, ephedrine, caffeine, beta-adrenergic agonists, FDG uptake, brown adipose tissue, FDG-PET, beta-blockers, body temperature, interscapular brown adipose tissue, rats, Lewis rats
MeSH terms
Adrenergic beta-Agonists, Animals, Body Temperature, Adipose Tissue, Brown, Caffeine, Drug Interactions, Ephedrine, Female, Nicotine, Rats, Inbred Lew, Tissue Distribution, Radiopharmaceuticals, Fluorodeoxyglucose F18, Positron-Emission Tomography, Rats

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