Hydrogen Solution Protects Kidneys During Transplant Surgery
- Authors
- Toyofumi Abe, Xiao-Kang Li, Koji Yazawa, Naoyuki Hatayama, Lin Xie, Bunpei Sato, Yoichi Kakuta, Koichi Tsutahara, Masayoshi Okumi, Hidetoshi Tsuda, Jun-ya Kaimori, Yoshitaka Isaka, Michiya Natori, Shiro Takahara, Norio Nonomura
- Journal
- Transplantation
- Year
- 2012
- DOI
- 10.1097/TP.0b013e318255f8be
- Study Type
- Rat
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- Japan
- Health Condition
- Kidney Disease
- Body System
- Urinary
TL;DR
Adding hydrogen gas to the preservation solution used for kidney transplants can reduce damage and improve the survival of the transplanted organ.
Key Finding
Kidneys preserved in hydrogen-rich solution showed improved function and longer survival rates in transplant recipients compared to standard preservation methods, with reduced oxidative stress and cell death.
Summary
Researchers tested whether adding hydrogen gas to a kidney preservation solution could reduce damage that occurs when kidneys are transplanted. In rat kidney transplants, kidneys preserved in hydrogen-rich solution showed less cell damage, less inflammation, and better function compared to kidneys preserved in standard solution. The treated kidneys also helped transplant recipients survive longer.
Practical Takeaway
This is early research in rats showing hydrogen-rich preservation solutions may help protect donor kidneys during transplantation. However, human clinical trials would be needed to determine if these benefits apply to actual kidney transplants in patients. This represents a potential future application rather than a current consumer health intervention.
Abstract
Background: Renal ischemia-reperfusion (I/R) injury is unavoidable in kidney transplantation and frequently influences both short- and long-term allograft survival rates. One of the major events in I/R injury is the generation of cytotoxic oxygen radicals. Recently, hydrogen gas has been reported to display antioxidant properties and protective effects against organ dysfunction induced by various I/R injuries. We investigated whether hydrogen-rich University of Wisconsin (HRUW) solution attenuates renal cold I/R injury. Methods: We prepared HRUW solution by a novel method involving immersion of centrifuge tubes containing UW solution into hydrogen-saturated water. Hydrogen readily permeates through the centrifuge tubes, and thus, the hydrogen concentration of the UW solution gradually increases in a time-dependent manner. Syngeneic rat kidney transplantation was performed, and the animals were divided into three groups: recipients with nonpreserved grafts (control group), recipients with grafts preserved in UW solution for 24 to 48 hr (UW group), and recipients with grafts preserved in HRUW solution for 24 to 48 hr (HRUW group). Results: In the early phases, HRUW solution decreased oxidative stress, tubular apoptosis, and interstitial macrophage infiltration in the kidney grafts. Consequently, HRUW solution improved renal function and prolonged recipient survival rate compared with simple cold storage using UW solution. Histopathologically, HRUW treatment alleviated tubular injury and suppressed development of interstitial fibrosis. Conclusions: HRUW solution improved graft function and prolonged graft survival compared with simple cold storage using UW solution by protecting tubular epithelial cells from inflammation and apoptosis. Our new method of organ preservation is a groundbreaking, safe, and simple strategy that may be applied in the clinical setting.