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Ito T, Kenmochi T, Kurihara K, Aida N, Hasegawa M, Ishihara T, Shintani A. Age and Pre-operative HbA1c levels affect renal function compensation in living kidney donors. Int Urol Nephrol 2024; 56:1315-1322. [PMID: 38032440 DOI: 10.1007/s11255-023-03877-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/04/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVES About 90% of Japanese kidney transplantations are conducted from living donors, and their safety and the maintenance of their renal function are critical. This study aims to identify factors that affect the compensation of renal function in living kidney donors after donor nephrectomy. METHOD In a retrospective cohort study, we reviewed data from 120 patients who underwent nephrectomy as living kidney transplant donors in our department from 2012 to 2021. Univariable and multivariable linear regression analyses were performed for donor factors affecting renal function after donor nephrectomy. RESULT The multivariable linear regression model revealed that the donor's age (p = 0.025), preoperative estimated Glomerular Filtration Rate (eGFR) (p < 0.001), and hemoglobin A1c (HbA1c) (p = 0.043) were independent risk factors for eGFR at six months after nephrectomy. The eGFR deterioration was more strongly associated with age in females than in males, whereas higher HbA1c values were more strongly associated with eGFR deterioration in males. Higher donor age and higher HbA1c each enhance the deterioration of eGFR six months after living donor nephrectomy. The data suggest that old age in especially female donors and preoperative higher HbA1c in male donors have a harmful impact on their renal function compensation.
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Affiliation(s)
- Taihei Ito
- Department of Transplantation and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo Kutsukake-Cho, Toyoake, Aichi, 470-1192, Japan.
| | - Takashi Kenmochi
- Department of Transplantation and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo Kutsukake-Cho, Toyoake, Aichi, 470-1192, Japan
| | - Kei Kurihara
- Department of Transplantation and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo Kutsukake-Cho, Toyoake, Aichi, 470-1192, Japan
| | - Naohiro Aida
- Department of Transplantation and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo Kutsukake-Cho, Toyoake, Aichi, 470-1192, Japan
| | - Midori Hasegawa
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Takuma Ishihara
- Innovative and Clinical Research Promotion Center, Gifu University Hospital, Gifu University, Gifu, Gifu, Japan
| | - Ayumi Shintani
- Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka, Osaka, Japan
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Kurihara K, Ito T, Aida N, Kenmochi T, Kusaka M, Egawa H. An Examination of Packing Methods for Grafts to Prevent Freezing Injury during Transportation for Liver Transplantation. J Clin Med 2023; 12:4703. [PMID: 37510817 PMCID: PMC10380418 DOI: 10.3390/jcm12144703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND University of Wisconsin solution (UW) may freeze at temperatures below -0.7 °C, damaging the graft. The present study assessed the effectiveness of the liver graft package protocol, which recommends filling a package with sufficient liquid to prevent grafts from sustaining freezing injury. METHODS We filled ice cubes at two temperatures (-80 and -20 °C) around packages and performed a comparative study with four groups based on the temperature and filling of the second layer with lactated Ringer's solution (LR) (A: -80 °C, LR-; B: -80 °C, LR+; C: -20 °C, LR-; D: -20 °C, LR+). The bovine liver was used as a graft and preserved for 6 h in the first isolation bag filled with UW. RESULTS While temperatures dropped below -0.7 °C at some points for 6 h in groups A, B, C, they never dropped to -0.7 °C in group D. The macroscopic findings in groups A, B, C showed freezing of the UW and grafts, but no such results in group D. A pathological study including electron microscopy showed freezing injury in groups A, B, and C but no significant changes in group D. CONCLUSIONS The graft package protocol prevents freezing of the UW and liver grafts.
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Affiliation(s)
- Kei Kurihara
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, Toyoake 470-1192, Japan
| | - Taihei Ito
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, Toyoake 470-1192, Japan
| | - Naohiro Aida
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, Toyoake 470-1192, Japan
| | - Takashi Kenmochi
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, Toyoake 470-1192, Japan
| | - Mamoru Kusaka
- The Japan Society for Organ Preservation and Biology, Palace Side Building, 1-1-1 Hitotsubashi, Chiyoda-ku, Tokyo 100-0003, Japan
| | - Hiroto Egawa
- The Japan Society for Transplantation, D's VARIE Shin-Otsuka Building 4F, 5-3-13 Otsuka, Bunkyo-ku, Tokyo 112-0012, Japan
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Waseda T, Ito T, Kenmochi T, Kurihara K, Aida N, Suzuki A, Shibata M, Hiratsuka I, Hasegawa M. Outcomes of Pancreas Transplantation for Lower-Ranked Candidates. Transplant Proc 2023:S0041-1345(23)00144-6. [PMID: 37095009 DOI: 10.1016/j.transproceed.2023.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/13/2023] [Indexed: 04/26/2023]
Abstract
BACKGROUND To perform more pancreas transplantation (PTx), our center sometimes performs pancreas transplantation for candidates ranked sixth place or lower. In this study, we analyzed the outcomes of PTx performed in our center to compare the outcomes of higher- and lower-ranked candidates. METHODS Seventy-two cases in which PTx was performed at our center were divided into 2 groups according to the candidate's rank. Cases in which PTx was performed for candidates up to fifth place were classified into the higher rank candidate group (HRC group; n = 48), whereas PTx for candidates who were ranked sixth place or lower were classified into the lower rank candidate group (LRC group; n = 24). The outcomes of PTx were retrospectively compared. RESULTS Although the LRC group included a greater number of older donors (age ≥60 years), a greater number of donors with deteriorated renal function, and a greater number of HLA mismatches, the 1- and 5-year patient survival rates in the HRC group were 91.6% and 91.6%, respectively, compared with 95.8% and 87.0%, respectively, in the LRC group (P = .755). In terms of both pancreas and kidney graft survival, there were no significant differences between the 2 groups. Additionally, there were no significant differences between the 2 groups regarding the glucagon stimulation test and 75 g OGTT results, insulin independence rate, HbA1c, or serum creatinine level after transplantation. CONCLUSIONS In Japan, where there is a severe donor shortage, the performance of transplantation for lower-ranked candidates would increase the number of opportunities for patients to receive PTx.
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Affiliation(s)
- Takato Waseda
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Taihei Ito
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan.
| | - Takashi Kenmochi
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Kei Kurihara
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Naohiro Aida
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Atsushi Suzuki
- Department of Endocrinology, Diabetes and Metabolism, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Megumi Shibata
- Department of Endocrinology, Diabetes and Metabolism, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Izumi Hiratsuka
- Department of Endocrinology, Diabetes and Metabolism, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Midori Hasegawa
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Clinical Islet Transplantation Covered by Health Insurance in Japan. J Clin Med 2022; 11:jcm11143977. [PMID: 35887740 PMCID: PMC9321768 DOI: 10.3390/jcm11143977] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/05/2022] [Indexed: 12/04/2022] Open
Abstract
Pancreatic islet transplantation is a treatment option for patients with type 1 diabetes mellitus and has been performed in various countries [1–5]. [...]
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Aida N, Ito T, Kurihara K, Hiratsuka I, Shibata M, Suzuki A, Kenmochi T. Evaluation of the Efficacy and Effects of Common Hepatic Artery Reconstruction in Pancreas Transplantation: A Randomized Controlled Trial. J Clin Med 2022; 11:jcm11082258. [PMID: 35456349 PMCID: PMC9024615 DOI: 10.3390/jcm11082258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/14/2022] [Accepted: 04/16/2022] [Indexed: 02/07/2023] Open
Abstract
Maintenance of postoperative graft flow is important in pancreas transplantation. In Japan, reconstruction of the common hepatic artery is performed primarily to increase perfusion in the pancreatic head. We investigated the effects of common hepatic artery reconstruction on patient and graft survival and endocrine functions. Twenty-nine cases of pancreas transplantation were registered in the clinical trial. Of the 29 cases, four were excluded because of the risk of ischemia without reconstruction or complicated reconstruction due to a narrow artery. A total of 25 cases were randomized into two groups: 13 in the non-reconstructed group and 12 in the reconstructed group. The 1-year patient survival and graft survival rates of the non-reconstructed and reconstructed groups were 92.3% and 83.3%, and 91.7% and 82.5%, respectively. The incidence of complications in the two groups was comparable, with 38.5% (5/13 cases) in the non-reconstructed group and 33.3% (4/12 cases) in the reconstructed group. The results of the glucagon stimulation test and oral glucose tolerance test at 1 month and 1 year post-transplantation were comparable. Common hepatic artery reconstruction is not essential unless there is risk of ischemia. This study was registered at the University Hospital Medical Information Network Clinical Trials Registry under UMIN000027213.
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Affiliation(s)
- Naohiro Aida
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (T.I.); (K.K.); (T.K.)
- Correspondence: ; Tel.: +81-0562-93-2111; Fax: +81-0562-93-5125
| | - Taihei Ito
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (T.I.); (K.K.); (T.K.)
| | - Kei Kurihara
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (T.I.); (K.K.); (T.K.)
| | - Izumi Hiratsuka
- Department of Endocrinology, Diabetes and Metabolism, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (I.H.); (M.S.); (A.S.)
| | - Megumi Shibata
- Department of Endocrinology, Diabetes and Metabolism, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (I.H.); (M.S.); (A.S.)
| | - Atsushi Suzuki
- Department of Endocrinology, Diabetes and Metabolism, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (I.H.); (M.S.); (A.S.)
| | - Takashi Kenmochi
- Department of Transplantation and Regenerative Medicine, School of Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan; (T.I.); (K.K.); (T.K.)
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Ito T, Kenmochi T, Kurihara K, Aida N. The History of Clinical Islet Transplantation in Japan. J Clin Med 2022; 11:jcm11061645. [PMID: 35329971 PMCID: PMC8953643 DOI: 10.3390/jcm11061645] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 01/01/2023] Open
Abstract
Islet transplantation shows the promise of being capable of relieving glucose instability and improving QOL of patients with type 1 diabetes that cannot be controlled due to severe hypoglycemia unawareness. In Japan, following the first human islet isolation from a donor after cardiac death in 2003 and the first clinical islet transplantation in 2004, islet transplantation was performed for the improvement of type 1 diabetes as a single-center trial in several centers. Although it was discontinued due to the possibility of contamination of collagenase by bovine brain component in 2007, the phase II clinical trial of islet transplantation started using ATG induction and a TNF-α inhibition protocol in 2012. The primary endpoints of this trial were the proportion of patients with HbA1c < 7.4% and freedom from severe hypoglycemic events at one year after the first islet cell infusion. In an interim analysis, this endpoint was achieved in 75% of cases. In April 2020, clinical islet transplantation was finally covered by health insurance in Japan, thanks to these outcomes. We herein introduce more than 20 years of history of clinical islet transplantation in Japan.
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Affiliation(s)
- Taihei Ito
- Correspondence: ; Tel.: +81-562-93-2000; Fax: +81-562-93-7060
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Ito T, Kenmochi T, Ota A, Kuramitsu K, Soyama A, Kinoshita O, Eguchi S, Yuzawa K, Egawa H. National survey on deceased donor organ transplantation during the COVID-19 pandemic in Japan. Surg Today 2021; 52:763-773. [PMID: 34686930 PMCID: PMC8536472 DOI: 10.1007/s00595-021-02388-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/11/2021] [Indexed: 12/22/2022]
Abstract
PURPOSE We investigated the status of deceased organ donation and transplantation through a questionnaire distributed to transplant centers in Japan during the COVID-19 pandemic. METHODS The questionnaire was distributed electronically to 206 transplant centers for heart (n = 11), lung (n = 10), liver (n = 25), kidney (n = 130), pancreas (n = 18), and small intestine (n = 12) transplantation. Organ donations and organ transplantation data were extracted from the Japan Organ Transplant Network website. RESULTS We received questionnaire responses from 177 centers (response rate, 86%). In 2020, the number of brain-dead donors (BDDs) decreased to 68 (69% of the year-on-year average) and the number of donors after cardiac death (DCDs) decreased to 9 (32% of the year-on-year average). Eighty-five (48%) transplant centers (heart, n = 0; lung, n = 0; liver, n = 4; kidney, n = 78; pancreas, n = 22; and small intestine, n = 0) suspended transplant surgeries in response to the COVID-19 pandemic. Consequently, the number of organ transplantations from deceased donors was significantly lower in 2020 than in 2019. CONCLUSION Although the COVID-19 pandemic has had less impact in Japan than in other countries, it has affected transplantation activity significantly, suspending transplantation surgeries in 48% of the transplantation centers, including 78% of the kidney transplantation centers, and reducing the number of organ donations to 61% of the year-on-year average.
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Affiliation(s)
- Taihei Ito
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Dengakugakubo 1-98, Kutsukakecho, Toyoake, Aichi, 470-1192, Japan.
| | - Takashi Kenmochi
- Department of Transplantation and Regenerative Medicine, Fujita Health University, School of Medicine, Dengakugakubo 1-98, Kutsukakecho, Toyoake, Aichi, 470-1192, Japan
| | - Atsuhiko Ota
- Department of Public Health, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Kaori Kuramitsu
- Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Akihiko Soyama
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Nagasaki, Japan
| | - Osamu Kinoshita
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Nagasaki, Japan
| | - Kenji Yuzawa
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Mito, Ibaraki, Japan
| | - Hiroto Egawa
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan
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