The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Obesity-prone rats have normal blood-brain barrier transport but defective central leptin signaling before obesity onset
Abstract
Rats selectively bred to develop diet-induced obesity (DIO) were compared with those bred to be diet resistant (DR) on a 31% fat high-energy diet with regard to their central leptin signaling and blood-brain barrier (BBB) transport. Peripheral leptin injection (15 mg/kg ip) into lean 4- to 5-wk-old rats produced 54% less anorexia in DIO than DR rats. DIO rats also had 21, 63, and 64% less leptin-induced immunoreactive phosphorylated signal transducer and activator of transcription 3 (pSTAT3) expression in the hypothalamic arcuate, ventromedial, and dorsomedial nuclei, respectively. However, hindbrain leptin-induced nucleus tractus solitarius pSTAT3 and generalized sympathetic (24-h urine norepinephrine) activation were comparable. Reduced central leptin signaling was not due to defective BBB transport since transport did not differ between lean 4- to 5-wk-old DIO and DR rats. Conversely, DIO leptin BBB transport was reduced when they became obese at 23 wk of age on low-fat chow or after 6 wk on high-energy diet. In addition, leptin receptor mRNA expression was 23% lower in the arcuate nuclei of 4- to 5-wk-old DIO compared with DR rats. Thus a preexisting reduction in hypothalamic but not brain stem leptin signaling might contribute to the development of DIO when dietary fat and caloric density are increased. Defects in leptin transport appear to be an acquired defect associated with the development of obesity and possibly age.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Campfield, L. A., Smith, F. J., Guisez, Y., Devos, R., & Burn, P. (1995) · Science · doi:10.1126/science.7624778 · Cited by 3,243
Cerebrospinal fluid leptin levels: Relationship to plasma levels and to adiposity in humans
Schwartz, M. W., Peskind, E., Raskind, M., Boyko, E. J., & Porte, D. (1996) · Nature Medicine · doi:10.1038/nm0596-589 · Cited by 1,014
Receptor-mediated regional sympathetic nerve activation by leptin.
Haynes, W. G., Morgan, D. A., Walsh, S. A., Mark, A. L., & Sivitz, W. I. (1997) · Journal of Clinical Investigation · doi:10.1172/jci119532 · Cited by 979 · cited 1×
“Aside from its generally catabolic effect on energy homeostasis, leptin increases both general sympathetic activity and blood pressure (18, 26).”
BackgroundTwo defects contribute to hypothalamic leptin resistance in mice with diet-induced obesity
El-Haschimi, K., Pierroz, D. D., Hileman, S. M., Bjørbæk, C., & Flier, J. S. (2000) · Journal of Clinical Investigation · doi:10.1172/jci9842 · Cited by 887
Peterson, W. M., Wang, Q., Tzekova, R., & Wiegand, S. J. (2000) · The Journal of Neuroscience · doi:10.1523/jneurosci.20-11-04081.2000 · Cited by 267
The Concept of Selective Leptin Resistance
Correia, M. L. G., Haynes, W. G., Rahmouni, K., Morgan, D. A., Sivitz, W. I., & Mark, A. L. (2002) · Diabetes · doi:10.2337/diabetes.51.2.439 · Cited by 218
Selective leptin resistance: a new concept in leptin physiology with cardiovascular implications
Mark, A. L., Correia, M. L. G., Rahmouni, K., & Haynes, W. G. (2002) · Journal of Hypertension · doi:10.1097/00004872-200207000-00001 · Cited by 215
Morton, G. J., Niswender, K. D., Rhodes, C. J., Myers, M. G., Blevins, J. E., Baskin, D. G., & Schwartz, M. W. (2003) · Endocrinology · doi:10.1210/en.2002-0115 · Cited by 158
Selective Resistance to Central Neural Administration of Leptin in Agouti Obese Mice
Rahmouni, K., Haynes, W. G., Morgan, D. A., & Mark, A. L. (2002) · Hypertension · doi:10.1161/hy0202.102836 · Cited by 126
Cited by
The 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
Region-Specific Leptin Resistance within the Hypothalamus of Diet-Induced Obese Mice
Münzberg, H., Flier, J. S., & Bjørbæk, C. (2004) · Endocrinology · doi:10.1210/en.2004-0726 · Cited by 737
Molecular and anatomical determinants of central leptin resistance
Münzberg, H., & Myers, M. G. (2005) · Nature Neuroscience · doi:10.1038/nn1454 · Cited by 550
Roth, J. D., Roland, B. L., Cole, R. L., Trevaskis, J. L., Weyer, C., Koda, J. E., Anderson, C. M., Parkes, D. G., & Baron, A. D. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0706473105 · Cited by 436
Recinella, L., Orlando, G., Ferrante, C., Chiavaroli, A., Brunetti, L., & Leone, S. (2020) · Frontiers in Physiology · doi:10.3389/fphys.2020.578966 · Cited by 261
Metadata
- Authors
- Levin, B. E., Dunn-Meynell, A. A., & Banks, W. A.
- Venue
- American Journal of Physiology-Regulatory, Integrative and Comparative Physiology
- Publisher
- American Physiological Society
- Published
- 2004-01
- Volume
- 286
- Issue
- 1
- Pages
- R143-R150
- ISSN
- 0363-6119 (ISSN-L)
- 1522-1490
- OpenAlex
- W1992328870
- Cited by
- 270
- References
- 9
- FWCI
- 7.29
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Obesity-prone rats have normal blood-brain barrier transport but defective central leptin signaling before obesity onset. https://app.cochat.ai/papers/10.1152/ajpregu.00393.2003
- The paper
- Levin, B. E., Dunn-Meynell, A. A., & Banks, W. A. (2004). Obesity-prone rats have normal blood-brain barrier transport but defective central leptin signaling before obesity onset. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. https://doi.org/10.1152/ajpregu.00393.2003
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
