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Yang C, Hosgood SA, Meeta P, et al. Cyclic Helix B Peptide in Preservation Solution and Autologous Blood Perfusate Ameliorates Ischemia-Reperfusion Injury in Isolated Porcine Kidneys. Transplant Direct. 2015;1(2):e6doi: 10.1097/TXD.0000000000000515.
Yang, C., Hosgood, S. A., Meeta, P., Long, Y., Zhu, T., Nicholson, M. L., & Yang, B. (2015). Cyclic Helix B Peptide in Preservation Solution and Autologous Blood Perfusate Ameliorates Ischemia-Reperfusion Injury in Isolated Porcine Kidneys. Transplantation direct, 1(2), e6. https://doi.org/10.1097/TXD.0000000000000515
Yang, Cheng, et al. "Cyclic Helix B Peptide in Preservation Solution and Autologous Blood Perfusate Ameliorates Ischemia-Reperfusion Injury in Isolated Porcine Kidneys." Transplantation direct vol. 1,2 (2015): e6. doi: https://doi.org/10.1097/TXD.0000000000000515
Yang C, Hosgood SA, Meeta P, Long Y, Zhu T, Nicholson ML, Yang B. Cyclic Helix B Peptide in Preservation Solution and Autologous Blood Perfusate Ameliorates Ischemia-Reperfusion Injury in Isolated Porcine Kidneys. Transplant Direct. 2015 Mar 10;1(2):e6. doi: 10.1097/TXD.0000000000000515. eCollection 2015 Mar. PMID: 27500213; PMCID: PMC4946457.
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Transplant Direct. 2015 Mar 10;1(2):e6. doi: 10.1097/TXD.0000000000000515. eCollection 2015 Mar.

Cyclic Helix B Peptide in Preservation Solution and Autologous Blood Perfusate Ameliorates Ischemia-Reperfusion Injury in Isolated Porcine Kidneys.

Transplantation direct

Cheng Yang, Sarah A Hosgood, Patel Meeta, Yaqiu Long, Tongyu Zhu, Michael L Nicholson, Bin Yang

Affiliations

  1. Department of Urology, Zhongshan Hospital, Fudan University; Shanghai Key Laboratory of Organ Transplantation, Shanghai, People's Republic of China.
  2. Transplant Group, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester General Hospital, University Hospitals of Leicester, United Kingdom.
  3. Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China.
  4. Transplant Group, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester General Hospital, University Hospitals of Leicester, United Kingdom.; Renal Group, Basic Medical Research Centre; Department of Nephrology, Affiliated Hospital of Nantong University, University of Nantong, Nantong, People's Republic of China.

PMID: 27500213 PMCID: PMC4946457 DOI: 10.1097/TXD.0000000000000515

Abstract

UNLABELLED: There is a critical need to better preserve isolated organs before transplantation. We developed a novel nonerythropoiesis cyclic helix B peptide (CHBP) derived from erythropoietin, which has potent tissue protection and prolonged serum stability. The renoprotection and potential mechanism of CHBP were evaluated in a kidney preservation model.

MATERIALS AND METHODS: Porcine kidneys (n = 5) subjected to 20-minute warm ischemia were retrieved and flushed with hyperosmolar citrate to mimic deceased donation. The kidneys and autologous blood ± 10.56 nmol/L CHBP were placed in cold storage (CS) for 18 hours. These kidneys were then normothermically hemoreperfused for 3 hours using an isolated organ perfusion system. The renal function and structure, apoptosis, inflammation, and expression of caspase-3 and heat shock protein 70 (HSP70) were assessed.

RESULTS: Cyclic helix B peptide significantly increased the renal blood flow, oxygen consumption, and urine output during reperfusion, but decreased serum potassium and renal tissue damage. Apoptotic cells were significantly decreased in the tubular areas, but increased in the lumens and interstitial areas in the post-CS and postreperfused kidneys, whereas myeloperoxidase+ cells were reduced. In addition, the expression of both caspase-3 precursor and active subunits was downregulated by CHBP in reperfused kidneys. However, HSP70 was upregulated in the post-CS and postreperfused kidneys treated with CHBP.

CONCLUSIONS: Cyclic helix B peptide administered into preservation and reperfusion solutions ameliorated renal ischemia-reperfusion injury, which might be associated with decreased apoptosis, inflammation and caspase-3, but increased HSP70. This novel preservation approach using CHBP may be applied in a porcine kidney transplant model and potential human donor kidney preservation.

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