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Mitochondria-related reversal of early-stage diabetic nephropathy in donor kidney after transplantation in mice

  
@article{ATM33823,
	author = {Weinan Wu and Yiming Jin and Lisha Teng and Xue Shao and Yucheng Wang and Shi Feng and Cuili Wang and Hong Jiang and Jianyong Wu},
	title = {Mitochondria-related reversal of early-stage diabetic nephropathy in donor kidney after transplantation in mice},
	journal = {Annals of Translational Medicine},
	volume = {7},
	number = {24},
	year = {2019},
	keywords = {},
	abstract = {Background: Renal diabetic changes are frequent in kidney transplantation (KTx) donors. Whether these diabetic changes are reversible remains a topic of debate. This study aimed to test the hypothesized reversibility of diabetic changes after KTx.
Methods: C57BL/6J mice were randomly divided into three groups: the control group, early-stage group (ESG), and advanced-stage group (ASG). Diabetes mellitus (DM) was induced in mice by intraperitoneal injection of streptozotocin (STZ) at 50 mg/kg body weight for five consecutive days. Blood glucose levels ≥16.7 mmol/L were indicative of diabetic mice. The kidneys from ESG and ASG were transplanted to control mice 12 or 32 weeks after STZ injection. Kidney tissue, blood, and 24-hour urine specimens of donor and recipient mice were collected before KTx and 28 days after KTx, respectively. We measured the body weight, blood glucose, histological changes, reactive oxygen species (ROS), apoptosis. Electron microscopy was also performed to evaluate the mitochondrial morphology. The expression of NADPH oxidases (NOXs) was assessed by qRT-PCR.
Results: Kidneys from early-stage diabetic mice showed evidence of lesion reversal four weeks after KTx, including decreased urinary albumin and reversal of histological changes. Besides, mitochondrial swelling, oxidative stress, apoptosis, and overexpression of NOXs in the kidneys were also suppressed. Conversely, no changes were observed in kidneys from advanced-stage diabetic mice after KTx.
Conclusions: We confirmed that early-stage but not advanced-stage diabetic nephropathy (DN) is reversible, which is related to reduced NOX expression and improvement in mitochondrial function. These results indicated that kidneys with early-stage DN could be used for KTx in clinical practice, as the disease may be reversed following KTx.},
	issn = {2305-5847},	url = {https://atm.amegroups.org/article/view/33823}
}