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Cheng J, Li F, Wang G, Guo W, Huang S, Wang B, Li C, Jiang Q, Cai L, Cui J. Optimal LDR to Protect the Kidney From Diabetes: Whole-Body Exposure to 25 mGy X-rays Weekly for 8 Weeks Efficiently Attenuates Renal Damage in Diabetic Mice. Dose Response 2018; 16:1559325818789843. [PMID: 30210268 PMCID: PMC6130090 DOI: 10.1177/1559325818789843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 06/04/2018] [Accepted: 06/12/2018] [Indexed: 12/18/2022] Open
Abstract
To explore an optimal frequency of whole-body low-dose radiation (LDR) to protect the kidney from diabetes, type 1 diabetic mice were induced with multiple injections of low-dose streptozotocin in male C57BL/6J mice. Diabetic or age-matched normal mice received whole-body exposure to 12.5 or 25 mGy either every other day or weekly for 4 or 8 weeks. Diabetes decreased the urinary creatinine and increased the microalbumin in urine, renal accumulation of 3-nitrotyrosine and 4-hydroxynonenal, and renal expression of collagen IV and fibronectin. All these renal pathological and functional changes in diabetic mice were significantly attenuated by exposure to LDR at all regimens. However, whole-body exposure of diabetic mice to 25 mGy weekly and to 12.5 mGy every other day for 8 weeks provided a better prevention of diabetic nephropathy than other LDR regimens. Furthermore, whole-body exposure to 25 mGy weekly for 8 weeks showed no detectable effect on the kidney of normal mice, but whole-body exposure to normal mice at 12.5 mGy every other day for 8 weeks increased urinary microalbumin and renal expression of collagen IV and fibronectin. These results suggest that whole-body exposure to LDR at 25 mGy weekly is the optimal condition of LDR to protect the kidney from diabetes.
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Affiliation(s)
- Jie Cheng
- Department of Endocrinology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fengsheng Li
- Department of Pediatrics, Pediatric Research Institute, the University of Louisville, Louisville, KY, USA.,The General Hospital of the PLA Rocket Force, Beijing, China
| | - Guanjun Wang
- The First Hospital of Jilin University, Changchun, China
| | - Weiying Guo
- Department of Pediatrics, Pediatric Research Institute, the University of Louisville, Louisville, KY, USA.,The First Hospital of Jilin University, Changchun, China
| | - Shan Huang
- Department of Endocrinology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Brain Wang
- Department of Radiation Oncology, the University of Louisville, Louisville, KY, USA
| | - Cai Li
- The First Hospital of Jilin University, Changchun, China
| | - Qisheng Jiang
- The General Hospital of the PLA Rocket Force, Beijing, China
| | - Lu Cai
- Department of Pediatrics, Pediatric Research Institute, the University of Louisville, Louisville, KY, USA.,Department of Radiation Oncology, the University of Louisville, Louisville, KY, USA
| | - Jiuwei Cui
- The First Hospital of Jilin University, Changchun, China
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