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Marinaki S, Vallianou K, Darema M, Mantios E, Kapsia E, Melexopoulou C, Filiopoulos V, Liapis G, Boletis IN. Τhe Impact of Pre-Transplant Kidney Biopsy on the Evaluation of Prospective Living Kidney Donors. J Clin Med 2023; 12:jcm12072685. [PMID: 37048768 PMCID: PMC10095397 DOI: 10.3390/jcm12072685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/25/2023] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
Living kidney donation contributes to increasing the donor pool. Since safety and excellent outcomes of living kidney donors (LKD) are essential, renal biopsy must be part of the pre-transplant evaluation in donors with isolated urine abnormalities or other risk factors. We retrospectively collected data on potential living donors evaluated in the pre-transplant outpatient clinic of Laiko General Hospital of Athens between 2007 and 2022, who underwent a pre-transplant biopsy. Biopsy indications included microscopic hematuria, borderline proteinuria and comorbidities suggestive of chronicity. Those with glomerular diseases or chronic lesions were excluded from donation. We identified 59 potential living donors who underwent renal biopsy. Of these, 10 (16.9%) were male. Median age was 58 (IQR 51-63) years, while 23 (39%) were older than 60 years. 49 out of 59 (83%) had glomerular hematuria, 10 (16.7%) had proteinuria (150-300 mg/d). Out of the 59 donors, 21 (35.6%) were hypertensive, three (5.1%) had impaired glucose tolerance and seven (11.9%) had a BMI > 30 kg/m2. A total of 32 (54.2%) potential donors were accepted for donation. Eight (13.6%) had IgA nephropathy, 10 (16.9%) TBMD and nine (15.3%) had increased chronicity including secondary FSGS. When compared with a control group of donors who did not need a pre-transplant biopsy, those 32 who donated were more frequently hypertensive (p = 0.003), but had similar eGFR [61.3 (±10.4) vs. 61.9 (±13.8), p = 0.866] after a follow-up of 79 (36-114) months. Renal biopsy is a useful tool in the evaluation of prospective LKD. Thorough assessment of donors with isolated urine abnormalities and marginal donors is critical to ensure good post-donation outcomes.
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Affiliation(s)
- Smaragdi Marinaki
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Kalliopi Vallianou
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Maria Darema
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Evangelos Mantios
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Eleni Kapsia
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Christina Melexopoulou
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Vassilis Filiopoulos
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - George Liapis
- 1st Department of Pathology, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Ioannis N Boletis
- Clinic of Nephrology and Renal Transplantation, Laiko General Hospital, Medical School of Athens, National and Kapodistrian University, 11527 Athens, Greece
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Hori S, Tanaka N, Tomizawa M, Yoneda T, Shimada K, Nishimura N, Nakai Y, Miyake M, Torimoto K, Itami H, Fujii T, Minamiguchi K, Fujimoto K. Clinical Impact of Subclinical Interstitial Fibrosis or Tubular Atrophy in 1-Hour Allograft Biopsy for Remnant Renal Function in Living Kidney Donors: A Prospective Observational Study. Transplant Proc 2021; 53:2833-2840. [PMID: 34756468 DOI: 10.1016/j.transproceed.2021.09.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 09/22/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Preservation of remnant renal function (RRF) is one of the major concerns among living kidney donors (LKDs). A comprehensive assessment is needed to predict the RRF. In this prospective study, we investigated the roles of histologic findings from a 1-hour allograft biopsy in predicting the RRF. METHODS Our prospective study included 116 LKDs who underwent donor nephrectomy (DN) at our institute. Clinical and radiographic data were obtained from their medical charts. Renal volume parameters were calculated using the preoperative computed tomographic images in the volume analyzer SYNAPSE VINCENT image analysis system. Tissues obtained from allograft biopsy were examined. RRF was defined as the estimated glomerular filtration rate (eGFR) 12 months after DN. RESULTS Of 116 LKDs, 95 were finally evaluated. The median age of the LKDs at DN and the preoperative eGFR were 57 years and 80.0 mL/min/1.73 m2, respectively. In the histologic analysis, 68 allografts (71.6%) had nonspecific findings involving the glomerulus, vessel, and tubulointerstitium. Interstitial fibrosis or tubular atrophy (IF/TA) was the only significant predictive factor for RRF (P = .039). No significant association was found between renal volume parameters and IF/TA, whereas remnant renal volume adjusted by body weight (RRV/BW) tended to be relatively correlated with IF/TA (P = .072). Furthermore, LKDs with subclinical IF/TA tended to have decreased RRV/BW compared with those without subclinical IF/TA (P = .088). CONCLUSIONS Our findings suggested that the presence of IF/TA could be a predictive factor for RRF after DN. Further research establishing the predictive model for RRF is warranted to improve the outcomes of LKDs.
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Affiliation(s)
- Shunta Hori
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Nobumichi Tanaka
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
| | - Mitsuru Tomizawa
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Tatsuo Yoneda
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Keiji Shimada
- Department of Pathology, Nara City Hospital, 1-50-1 Higashikidera-cho, Nara, Nara 630-8305, Japan
| | - Nobutaka Nishimura
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Yasushi Nakai
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Makito Miyake
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Kazumasa Torimoto
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Hiroe Itami
- Department of Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Tomomi Fujii
- Department of Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Kiyoyuki Minamiguchi
- Department of Radiology and Nuclear Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Kiyohide Fujimoto
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
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Poor Kidney Transplant Outcomes and Higher Organ Discard Rate Secondary to Macroscopic Arteriosclerosis of Renal Artery: More Evidence Needed to Prove Correlation. Transplantation 2021; 105:e76. [PMID: 34157718 DOI: 10.1097/tp.0000000000003703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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