Abstract |
Excessive proliferation of mesangial cells is observed in various types of glomerular disease including glomerulonephritis (GN), which is progressive in nature and eventually results in end-stage renal disease ( ESRD). Vitamin K(1) 2,3-epoxide reductase (VKOR) and the vitamin K-dependent growth arrest-specific gene 6/Axl pathway play a key role in mesangial cell proliferation in GN. In the present study, we indicate the potential of a VKOR inhibitor, 3-acetyl-5-methyltetronic acid (AMT), to prevent the proliferation of glomerular mesangial cells and suppress the progression of GN. AMT was administered intravenously to rats once daily for 12 days and a mouse anti-Thy1 monoclonal antibody was injected intravenously after the AMT treatment on Day 6. Creatinine clearance (CCr) significantly increased and the albumin-to- creatinine ratio (ACR) significantly decreased in the AMT-treated group of the Thy-1 GN rats. In addition, glomerular and tubular damage was improved histopathologically in the AMT-treated group. AMT did not affect blood coagulation due to its unique pharmacokinetic properties. The concentration of AMT reached the IC(50) for VKOR in kidney, but not in liver. A novel VKOR inhibitor, AMT, reduced renal mesangial cell proliferation and could be a supportive treatment for GN.
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Authors | Masashi Uchida, Yuka Sakaguchi, Yohei Miyamoto |
Journal | The Journal of veterinary medical science
(J Vet Med Sci)
Vol. 74
Issue 7
Pg. 863-9
(Jul 2012)
ISSN: 1347-7439 [Electronic] Japan |
PMID | 22322189
(Publication Type: Journal Article)
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Chemical References |
- 3-acetyl-5-methyltetronic acid
- Antibodies, Monoclonal
- Furans
- Creatinine
- Mixed Function Oxygenases
- Vitamin K Epoxide Reductases
- tetronic acid
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Topics |
- Administration, Intravenous
- Animals
- Antibodies, Monoclonal
(administration & dosage, pharmacology)
- Cell Proliferation
(drug effects)
- Creatinine
(blood)
- Furans
(administration & dosage, pharmacokinetics, pharmacology)
- Glomerulonephritis
(drug therapy, pathology)
- Inhibitory Concentration 50
- Male
- Mesangial Cells
(drug effects, physiology)
- Mice
- Mixed Function Oxygenases
(antagonists & inhibitors)
- Rats
- Rats, Wistar
- Vitamin K Epoxide Reductases
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