Title |
Chronic interstitial fibrosis in the rat kidney induced by long-term (6-mo) exposure to lithium
|
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Published in |
American Journal of Physiology: Renal, Fluid & Electrolyte Physiology, November 2012
|
DOI | 10.1152/ajprenal.00182.2012 |
Pubmed ID | |
Authors |
Robert J. Walker, John P. Leader, Jennifer J. Bedford, Glenda Gobe, Gerard Davis, Frederiek E. Vos, Sylvia deJong, John B. W. Schollum |
Abstract |
There is a lack of suitable animal models that replicate the slowly progressive chronic interstitial fibrosis that is characteristic of many human chronic nephropathies. We describe a chronic long-term (6-mo) model of lithium-induced renal fibrosis, with minimal active inflammation, which mimics chronic kidney interstitial fibrosis seen in the human kidney. Rats received lithium via their chow (60 mmol lithium/kg food) daily for 6 mo. No animals died during the exposure. Nephrogenic diabetes insipidus was established by 3 wk and persisted for the 6 mo. Following metabolic studies, the animals were killed at 1, 3, and 6 mo and the kidneys were processed for histological and immunohistochemical studies. Progressive interstitial fibrosis, characterized by increasing numbers of myofibroblasts, enhanced transforming growth factor-β(1) expression and interstitial collagen deposition, and a minimal inflammatory cellular response was evident. Elucidation of the underlying mechanisms of injury in this model will provide a greater understanding of chronic interstitial fibrosis and allow the development of intervention strategies to prevent injury. |
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Geographical breakdown
Country | Count | As % |
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Unknown | 33 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 8 | 24% |
Researcher | 5 | 15% |
Student > Postgraduate | 4 | 12% |
Student > Bachelor | 2 | 6% |
Student > Doctoral Student | 2 | 6% |
Other | 6 | 18% |
Unknown | 6 | 18% |
Readers by discipline | Count | As % |
---|---|---|
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Agricultural and Biological Sciences | 8 | 24% |
Biochemistry, Genetics and Molecular Biology | 4 | 12% |
Pharmacology, Toxicology and Pharmaceutical Science | 1 | 3% |
Unspecified | 1 | 3% |
Other | 2 | 6% |
Unknown | 9 | 27% |