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1.
Pharmacol Res ; 200: 107051, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38190956

RESUMO

Renal interstitial fibrosis/tubular atrophy (IF/TA) is a prominent pathological feature of chronic allograft dysfunction (CAD). Our previous study has demonstrated that epithelial-mesenchymal transition (EMT) plays a significant role in shaping the development of IF/TA. Nuclear SET domain (NSD2), a histone methyltransferase catalyzing methylation at lysine 36 of histone 3, is crucially involved in the development and progression of solid tumors. But its role in the development of renal allograft interstitial fibrosis has yet to be elucidated. Here, we characterize NSD2 as a crucial mediator in the mouse renal transplantation model in vivo and a model of tumor necrosis factor-α (TNF-α) stimulated-human renal tubular epithelial cells (HK-2) in vitro. Functionally, NSD2 knockdown inhibits EMT, dynamin-related protein 1 (Drp1)-mediated mitochondrial fission in mice. Conversely, NSD2 overexpression exacerbates fibrosis-associated phenotypes and mitochondrial fission in tubular cells. Mechanistically, tubular NSD2 aggravated the Drp-1 mediated mitochondrial fission via STAT1/ERK/PI3K/Akt signaling pathway in TNF-α-induced epithelial cell models. Momentously, mass spectrometry (MS) Analysis and site-directed mutagenesis assays revealed that NSD2 interacted with and induced Mono-methylation of STAT1 on K173, leading to its phosphorylation, IMB1-dependent nuclear translocation and subsequent influence on TNF-α-induced EMT and mitochondrial fission in NSD2-dependent manner. Collectively, these findings shed light on the mechanisms and suggest that targeting NSD2 could be a promising therapeutic approach to enhance tubular cell survival and alleviate interstitial fibrosis in renal allografts during CAD.


Assuntos
Nefropatias , Transplante de Rim , Humanos , Camundongos , Animais , Fator de Necrose Tumoral alfa/metabolismo , Fosfatidilinositol 3-Quinases/metabolismo , Dinâmica Mitocondrial , Domínios PR-SET , Fibrose , Aloenxertos/metabolismo , Transição Epitelial-Mesenquimal , Fator de Transcrição STAT1/metabolismo
2.
Clin Nephrol ; 101(2): 71-81, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38126728

RESUMO

BACKGROUND: The status of mineral and bone disorder (MBD) after kidney transplantation is not fully understood, and the assessment of abnormal mineral and bone metabolism in kidney transplant recipients (KTRs) has not been standardized. MATERIALS AND METHODS: We performed a retrospective analysis of 292 KTRs in our center. The levels of biochemical markers of bone metabolism and bone mineral density (BMD) were assessed. We evaluated the influencing factors of BMD using linear regression analysis. And correlation test was used for the correlation analysis between bone metabolism indicators and other indicators. RESULTS: Postoperative MBD mainly manifested as hypercalcemia (8.9%), hypophosphatemia (27.1%), low levels of 25-hydroxyvitamin D(25(OH)vitD) (67.0%), hyperparathyroidism (50.6%), and high levels of bone turnover markers (BTMs). The prevalence of osteopenia/osteoporosis in the femoral neck (FN) and lumbar spine (LS) was 20.1%/2.8% and 26.1%/3.6%, respectively. Multivariate analysis indicated that FN BMD was positively associated with body mass index (BMI) and negatively associated with acute rejection history (p < 0.05); while LS BMD was positively associated with BMI, and negatively associated with intact parathyroid hormone (iPTH) (p < 0.05). Biochemical markers of bone metabolism were affected by age, sex, preoperative dialysis mode and time, postoperative time, transplanted kidney function, and iPTH levels. LS BMD was negatively correlated with iPTH and BTMs (p < 0.05). CONCLUSION: MBD persisted after kidney transplantation. Decreased bone mass was associated with persistent hyperparathyroidism, acute rejection history, low BMI, advanced age, and menopause. Dynamic monitoring of bone metabolism index and BMD helps to assess MBD after kidney transplantation.


Assuntos
Hiperparatireoidismo , Transplante de Rim , Feminino , Humanos , Estudos Retrospectivos , Transplante de Rim/efeitos adversos , Diálise Renal , Densidade Óssea , Hormônio Paratireóideo , Biomarcadores , Hiperparatireoidismo/epidemiologia , Hiperparatireoidismo/etiologia
3.
Ren Fail ; 45(1): 2210231, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37183797

RESUMO

BACKGROUND: The assessment and prevention of mineral and bone disorder (MBD) in kidney transplant recipients (KTRs) have not been standardized. This study aimed to evaluate MBD one year after kidney transplantation (KT) and identify the influencing factors of MBD. METHODS: A total of 95 KTRs in our center were enrolled. The changes in bone mineral density (BMD) and bone metabolism biochemical markers, including serum calcium (Ca), phosphorus(P), 25-hydroxyvitamin D(25(OH)vitD), intact parathyroid hormone (iPTH), bone alkaline phosphatase, osteocalcin (OC), type I collagen N-terminal peptide and type I collagen C-terminal peptide (CTx), over one year after KT were assessed. The possible influencing factors of BMD were analyzed. The relationships between bone metabolism biochemical markers were evaluated. The indicators between groups with or without iPTH normalization were also compared. RESULTS: MBD after KT was manifested as an increased prevalence of hypophosphatemia and bone loss, persistent 25(OH)vitD deficiency, and partially decreased PTH and bone turnover markers (BTMs). Femoral neck BMD was positively correlated with body mass index (BMI) and postoperative 25(OH)vitD, and negatively correlated with postoperative PTH. Lumbar spine BMD was positively correlated with BMI and preoperative TG, and negatively correlated with preoperative OC and CTx. BMD loss was positively associated with glucocorticoid accumulation. Preoperative and postoperative iPTH was negatively correlated with postoperative serum P and 25(OH)vitD, and positively correlated with postoperative Ca and BTMs. The recipients without iPTH normalization, who accounted for 41.0% of all KTRs, presented with higher Ca, lower P, higher BTMs, advanced age, and a higher prevalence of preoperative parathyroid hyperplasia. CONCLUSIONS: MBD persisted after KT, showing a close relationship with hyperparathyroidism, high bone turnover, and glucocorticoid accumulation.


Assuntos
Distúrbio Mineral e Ósseo na Doença Renal Crônica , Hiperparatireoidismo , Transplante de Rim , Humanos , Biomarcadores , Densidade Óssea , Remodelação Óssea , Estudos de Coortes , Colágeno Tipo I , Glucocorticoides , Transplante de Rim/efeitos adversos , Hormônio Paratireóideo , Peptídeos , Osteoporose
4.
Clin Transplant ; 36(4): e14565, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34931720

RESUMO

OBJECTIVE: To evaluate the clinical efficacy and safety of iguratimod (IGU) for reducing panel reactive antibody (PRA) in high-mismatched renal transplant recipients. METHODS: Eligible recipients positive for PRAs who received or did not receive IGU treatment were enrolled. We retrospectively reviewed, collected, and analyzed statistically the clinical data of the recipients. RESULTS: A total of 80 recipients were included for further analysis. After IGU was administered for 9 months, no significant difference was found in the change rates of donor specific antibodies between two groups. Meanwhile, the reduction in the PRAs in the IGU group was greater than that in the non-IGU group in anti-human leukocyte antigen (HLA) class I and class II, anti-HLA class I, anti-HLA class II, anti-HLA A, and anti-HLA DR antibodies. However, no differences were found in the anti-HLA B, anti-HLA Cw, anti-HLA DP, and anti-HLA DQ antibodies between the two groups. No serious adverse events were reported, and the incidence of adverse events was comparable between the two groups. CONCLUSION: PRA levels in high-mismatched renal transplant recipients were significantly reduced after the administration of IGU. The high safety of IGU was also determined.


Assuntos
Transplante de Rim , Cromonas , Antígenos HLA , Antígenos de Histocompatibilidade Classe I , Teste de Histocompatibilidade , Humanos , Isoanticorpos , Transplante de Rim/efeitos adversos , Estudos Retrospectivos , Sulfonamidas
5.
Clin Transl Med ; 14(5): e1686, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38769658

RESUMO

BACKGROUND: Renal allograft interstitial fibrosis/tubular atrophy (IF/TA) constitutes the principal histopathological characteristic of chronic allograft dysfunction (CAD) in kidney-transplanted patients. While renal vascular endothelial-mesenchymal transition (EndMT) has been verified as an important contributing factor to IF/TA in CAD patients, its underlying mechanisms remain obscure. Through single-cell transcriptomic analysis, we identified Rictor as a potential pivotal mediator for EndMT. This investigation sought to elucidate the role of Rictor/mTORC2 signalling in the pathogenesis of renal allograft interstitial fibrosis and the associated mechanisms. METHODS: The influence of the Rictor/mTOR2 pathway on renal vascular EndMT and renal allograft fibrosis was investigated by cell experiments and Rictor depletion in renal allogeneic transplantation mice models. Subsequently, a series of assays were conducted to explore the underlying mechanisms of the enhanced mitophagy and the ameliorated EndMT resulting from Rictor knockout. RESULTS: Our findings revealed a significant activation of the Rictor/mTORC2 signalling in CAD patients and allogeneic kidney transplanted mice. The suppression of Rictor/mTORC2 signalling alleviated TNFα-induced EndMT in HUVECs. Moreover, Rictor knockout in endothelial cells remarkably ameliorated renal vascular EndMT and allograft interstitial fibrosis in allogeneic kidney transplanted mice. Mechanistically, Rictor knockout resulted in an augmented BNIP3-mediated mitophagy in endothelial cells. Furthermore, Rictor/mTORC2 facilitated the MARCH5-mediated degradation of BNIP3 at the K130 site through K48-linked ubiquitination, thereby regulating mitophagy activity. Subsequent experiments also demonstrated that BNIP3 knockdown nearly reversed the enhanced mitophagy and mitigated EndMT and allograft interstitial fibrosis induced by Rictor knockout. CONCLUSIONS: Consequently, our study underscores Rictor/mTORC2 signalling as a critical mediator of renal vascular EndMT and allograft interstitial fibrosis progression, exerting its impact through regulating BNIP3-mediated mitophagy. This insight unveils a potential therapeutic target for mitigating renal allograft interstitial fibrosis.


Assuntos
Fibrose , Transplante de Rim , Alvo Mecanístico do Complexo 2 de Rapamicina , Proteínas de Membrana , Mitofagia , Proteína Companheira de mTOR Insensível à Rapamicina , Transdução de Sinais , Animais , Proteína Companheira de mTOR Insensível à Rapamicina/metabolismo , Proteína Companheira de mTOR Insensível à Rapamicina/genética , Camundongos , Alvo Mecanístico do Complexo 2 de Rapamicina/metabolismo , Proteínas de Membrana/metabolismo , Proteínas de Membrana/genética , Humanos , Transplante de Rim/efeitos adversos , Fibrose/metabolismo , Masculino , Proteínas Mitocondriais/metabolismo , Proteínas Mitocondriais/genética , Aloenxertos , Rim/metabolismo , Rim/patologia , Camundongos Endogâmicos C57BL , Modelos Animais de Doenças , Proteínas Proto-Oncogênicas
6.
Cell Prolif ; : e13699, 2024 Jun 29.
Artigo em Inglês | MEDLINE | ID: mdl-38943534

RESUMO

Chronic allograft dysfunction (CAD) poses a significant challenge in kidney transplantation, with renal vascular endothelial-to-mesenchymal transition (EndMT) playing a vital role. While renal vascular EndMT has been verified as an important contributing factor to renal allograft interstitial fibrosis/tubular atrophy in CAD patients, its underlying mechanisms remain obscure. Currently, Src activation is closely linked to organ fibrosis development. Single-cell transcriptomic analysis in clinical patients revealed that Src is a potential pivotal mediator in CAD progression. Our findings revealed a significant upregulation of Src which closely associated with EndMT in CAD patients, allogeneic kidney transplanted rats and endothelial cells lines. In vivo, Src inhibition remarkably alleviate EndMT and renal allograft interstitial fibrosis in allogeneic kidney transplanted rats. It also had a similar antifibrotic effect in two endothelial cell lines. Mechanistically, the knockout of Src resulted in an augmented AMBRA1-mediated mitophagy in endothelial cells. We demonstrate that Src knockdown upregulates AMBRA1 level and activates mitophagy by stabilizing Parkin's ubiquitination levels and mitochondrial translocation. Subsequent experiments demonstrated that the knockdown of the Parkin gene inhibited mitophagy in endothelial cells, leading to increased production of Interleukin-6, thereby inducing EndMT. Consequently, our study underscores Src as a critical mediator of renal vascular EndMT and allograft interstitial fibrosis, exerting its impact through the regulation of AMBRA1/Parkin-mediated mitophagy.

7.
Cell Death Discov ; 9(1): 271, 2023 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-37507403

RESUMO

Chronic allograft dysfunction (CAD) is a major factor that hinders kidney transplant survival in the long run. Epithelial-mesenchymal transition (EMT) has been confirmed to significantly contribute to interstitial fibrosis/tubular atrophy (IF/TA), which is the main histopathological feature of CAD. Aberrant expression of the regulator of calcineurin 1 (RCAN1), recognized as an endogenous inhibitor of the calcineurin phosphatase, has been shown to be extensively involved in various kidney diseases. However, it remains unclear how RCAN1.4 regulates IF/TA formation in CAD patients. Herein, an in vivo mouse renal transplantation model and an in vitro model of human renal tubular epithelial cells (HK-2) treated with tumor necrosis factor-α (TNF-α) were employed. Our results proved that RCAN1.4 expression was decreased in vivo and in vitro, in addition to the up-regulation of Yin Yang 1 (YY1), a transcription factor that has been reported to convey multiple functions in chronic kidney disease (CKD). Knocking in of RCAN1.4 efficiently attenuated chronic renal allograft interstitial fibrosis in vivo and inhibited TNF-α-induced EMT in vitro through regulating anti-oxidative stress and the calcineurin/nuclear factor of activated T cells cytoplasmic 1 (NFATc1) signaling pathway. In addition, suppression of YY1 mediated by shRNA or siRNA alleviated TNF-α-induced EMT through abolishing reactive species partly in an RCAN1.4-dependent manner. Notably, we confirmed that YY1 negatively regulated RCAN1.4 transcription by directly interacting with the RCAN1.4 promoter. In addition, histone deacetylase 2 (HDAC2) interacted with YY1 to form a multi-molecular complex, which was involved in TNF-α-induced RCAN1.4 transcriptional repression. Therefore, RCAN1.4 is suggested to be modulated by the YY1/HDAC2 transcription repressor complex in an epigenetic manner, which is a mediated nephroprotective effect partly through modulating O2⋅- generation and the calcineurin/NFATc1 signaling pathway. Thus, the YY1-RCAN1.4 axis constitutes an innovative target for IF/TA treatment in CAD patients.

8.
Free Radic Biol Med ; 193(Pt 2): 579-594, 2022 11 20.
Artigo em Inglês | MEDLINE | ID: mdl-36356714

RESUMO

Renal interstitial fibrosis and tubular atrophy are essential pathological characteristics of chronic renal allograft dysfunction (CAD). Herein, we revealed that ferroptosis of renal tubular epithelial cells (RTECs) might contribute to renal tubular injury in CAD. Mechanistically, TNF-α induced ferroptosis by inhibiting GPX4 transcription through upregulating IRF1 in RTECs. IRF1 could bind with ZNF350 to form a transcription factor complex, which directly binds to the GPX4 promoter region to inhibit GPX4 transcription. Ferroptotic RTECs might secrete profibrotic factors, including PDGF-BB and IL-6, to activate neighboring fibroblasts to transform into myofibroblasts or induce EMT in adjacent RTECs. In conclusion, our results confirmed a novel role of ferroptosis in renal tubular injury and interstitial fibrosis, thereby providing insights into the pathogenesis of chronic renal allograft interstitial fibrosis during CAD.


Assuntos
Ferroptose , Nefropatias , Transplante de Rim , Humanos , Aloenxertos/metabolismo , Células Epiteliais/metabolismo , Ferroptose/genética , Fibrose , Fator Regulador 1 de Interferon/genética , Fator Regulador 1 de Interferon/metabolismo , Nefropatias/metabolismo
9.
Pharmacogenomics ; 22(14): 903-912, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34523354

RESUMO

Aim: Sirolimus (SIR) is an immunosuppressant with limitations, including a narrow treatment window, multiple adverse reactions and large differences within and among individuals. Objective: The correlation between numerous SNPs and SIR in terms of trough concentration in the early stage after kidney transplantation was analyzed. Materials & methods: A retrospective cohort study involving 69 kidney transplantation recipients was designed. Blood samples were collected to extract total DNAs, and trough SIR concentrations were measured. Logistic regression was used to analyze the association between SNPs and SIR trough concentrations. Results: At 7 days, 1 month and 3 months, the mean SIR trough concentration of patients in the CYP3A5 rs4646453-CC group was significantly higher than that in the CYP3A5 rs4646453-AA and CYP3A5 rs4646453-CA groups (p < 0.001) and CYP3A5 rs15524-AA group was significantly higher than that in the CYP3A5 rs15524-AG and CYP3A5 rs15524-GG groups (p < 0.001). Conclusion: Our study indicated that both CYP3A5 rs4646453 and CYP3A5 rs15524 had a certain influence on SIR trough concentration at 7 days, 1 month and 3 months.


Assuntos
Citocromo P-450 CYP3A/genética , Citocromo P-450 CYP3A/metabolismo , Imunossupressores/farmacocinética , Transplante de Rim/tendências , Polimorfismo de Nucleotídeo Único/genética , Sirolimo/farmacocinética , Adulto , Estudos de Coortes , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
10.
Front Genet ; 12: 798001, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-35265098

RESUMO

Background: The occurrence of proteinuria is one of the evaluation indicators of transplanted kidney damage and becomes an independent risk factor for poor prognosis after kidney transplantation. Our research sought to understand these potential associations and detect the underlying impact of single-nucleotide polymorphisms (SNPs) on proteinuria in kidney transplant recipients. Materials and Methods: There were 200 recipients enrolled in this study, from which blood samples were extracted for SNP mutation-related gene detection. RNA sequencing was performed in kidney tissues after kidney transplantation, and the significantly differentially expressed genes (DEGs) were analyzed between the control group and the proteinuria group. Then, the intersection of genes with SNP mutations and DEGs was conducted to obtain the target genes. Multiple genetic models were used to investigate the relationship between SNPs and proteinuria. In addition, the effect of SNP mutation in the target gene was further validated in human renal podocytes. Results: According to the sequencing results, 26 significant SNP mutated genes and 532 DEGs were found associated with proteinuria after kidney transplantation. The intersection of SNP mutated genes and DEGs showed that the Toll-like receptor 2 (TLR2) gene was significantly increased in the transplanted renal tissues of patients with proteinuria after kidney transplantation, which was consistent with the results of immunohistochemical staining. Further inheritance model results confirmed that mutations at rs3804099 of the TLR2 gene had significant influence on the occurrence of proteinuria after kidney transplantation. In the in vitro validation, we found that, after the mutation of rs3804099 on the TLR2 gene, the protein expressions of podocalyxin and nephrin in podocytes were significantly decreased, while the protein expressions of desmin and apoptosis markers were significantly increased. The results of flow cytometry also showed that the mutation of rs3804099 on the TLR2 gene significantly increased the apoptotic rate of podocytes. Conclusion: Our study suggested that the mutation of rs3804099 on the TLR2 gene was significantly related to the generation of proteinuria after kidney transplantation. Our data provide insights into the prediction of proteinuria and may imply potential individualized therapy for patients after kidney transplantation.

11.
J Immunol Res ; 2021: 8029180, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34950738

RESUMO

BACKGROUND: Nowadays, renal allograft survival is confined by the development of allograft fibrosis. Previous studies have reported interleukin-33 (IL-33) upregulated significantly in patients with chronic renal allograft dysfunction, and it could induce renal tubular epithelial to mesenchymal transition (EMT), which eventually contributed to renal allograft fibrosis. Our study intended to detect the underlying association between single nucleotide polymorphisms (SNPs) of IL-33 gene and renal allograft fibrosis in kidney transplant recipients. METHODS: We collected blood samples from 200 renal transplant recipients for the identification of SNPs and transplanted kidney tissue samples for identifying differentially expressed genes (DEGs). Intersection of SNP-related genes and DEGs was conducted for further analysis. Relationships between these SNPs and renal allograft fibrosis were evaluated by the inheritance models. Immunohistochemical (IHC) staining and western blotting (WB) were used to detect the expression of IL-33 and the markers of EMT in human kidney tissues obtained from control and chronic renal allograft dysfunction (CAD) patients. In vitro, we detected the progressions of EMT-related markers and the levels of MAPK signaling pathway mediators after transfecting IL-33 mutant plasmids in HK2 cells. RESULTS: Three intersected genes including IL-33 genes were significantly expressed. IL-33 expression was validated in kidney tissues by IHC and WB. Thirty-nine IL-33-related SNPs were identified in targeted sequencing, in which 26 tagger SNPs were found by linkage disequilibrium analysis for further analysis. General linear models indicated sirolimus administration significantly influenced renal allograft fibrosis (P < 0.05), adjustment of which was conducted in the following analysis. By multiple inheritance model analyses, SNP rs10975519 of IL-33 gene was found closely related to renal allograft fibrosis (P < 0.005). Furthermore, HK2 cells transfected with mutated plasmid of rs10975519 showed stronger mobility and migration ability. Moreover, IL-33 mutant plasmids could promote the IL-33-induced EMT through the sustained activation of p38 MAPK signaling pathway in HK2 cells. CONCLUSION: In our study, rs10975519 on the IL-33 gene was found to be statistically associated with the development of renal allograft fibrosis in kidney transplant recipients. This process may be related to the IL-33-induced EMT and sustained activation of p38 MAPK signaling pathway.


Assuntos
Interleucina-33/genética , Nefropatias/diagnóstico , Nefropatias/etiologia , Transplante de Rim , Polimorfismo de Nucleotídeo Único , Transplantados , Adulto , Alelos , Aloenxertos , Biomarcadores , Estudos de Casos e Controles , Suscetibilidade a Doenças , Feminino , Fibrose , Antígenos HLA/genética , Antígenos HLA/imunologia , Humanos , Transplante de Rim/efeitos adversos , Desequilíbrio de Ligação , Sistema de Sinalização das MAP Quinases , Masculino , Pessoa de Meia-Idade , Mutação , Estudos Retrospectivos , Transplante Homólogo
12.
Biosci Rep ; 39(8)2019 08 30.
Artigo em Inglês | MEDLINE | ID: mdl-31358687

RESUMO

With the increasing application of laparoendoscopic single-site nephrectomy (LESS-N) in kidney tumor, accumulating studies compared it with conventional laparoendoscopic nephrectomy (CL-N). However, controversial outcomes were reported. Hence, this meta-analysis was carried out to clarify these issues. Online databases PubMed, EMBASE and the Cochrane Library were searched comprehensively for eligible studies published before 24 July 2018. Odds ratios (ORs) or standardized mean differences (SMDs) with corresponding 95% confidence intervals (CIs) were collected for evaluating the pooled results of relevant outcomes. Ultimately, 13 eligible articles were enrolled. Meanwhile, compared with CL-N, LESS-N was related to a longer operation time (SMD: 0.40; 95% CI, 0.23-0.58; P=0.000), a shorter length of hospital stay (LOS) (SMD: -0.32; 95% CI, -0.62 to -0.02; P=0.034), a lower visual analog scale (VAS) score (SMD: -0.89; 95% CI, -1.22 to -0.56; P=0.000) and a lower analgesic requirement (SMD: -0.55; 95% CI, -0.87 to -0.23; P=0.001). There was no statistical difference in the postoperative day of oral intake, estimated blood loss (EBL), conversion rate, perioperative complications, intraoperative complications, postoperative complications, minor complications and major complications between LESS-N and CL-N. Patients with LESS-N for kidney tumor could have a longer operation time and shorter LOS, and meanwhile could need less analgesics and suffer less pain after LESS-N.


Assuntos
Neoplasias Renais/cirurgia , Laparoscopia/métodos , Nefrectomia/métodos , Humanos , Tempo de Internação , Duração da Cirurgia , Complicações Pós-Operatórias/etiologia
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