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renal warm ischemia

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https://www.readbyqxmd.com/read/28810824/laparoscopic-donor-nephrectomy-early-experience-at-a-single-center-in-pakistan
#1
Rehan Mohsin, Asad Shehzad, Uspal Bajracharya, Bux Ali, Tahir Aziz, Muhammed Mubarak, Altaf Hashmi, Adibul Hasan Rizvi
OBJECTIVES: Laparoscopic donor nephrectomy has become the criterion standard for kidney retrieval from living donors. There is no information on the experience and outcomes of laparoscopic donor nephrectomy in Pakistan. The objective of the study was to identify benefits and harms of using laparoscopic compared with open nephrectomy techniques for renal allograft retrieval. MATERIALS AND METHODS: In this a retrospective study, patient files from May 2014 to September 2015 were analyzed...
August 13, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28807212/comparison-of-normothermic-and-hypothermic-perfusion-in-porcine-kidneys-donated-after-cardiac-death
#2
Matthew F Blum, Qiang Liu, Basem Soliman, Paul Dreher, Toshihiro Okamoto, Emilio D Poggio, David A Goldfarb, William M Baldwin, Cristiano Quintini
BACKGROUND: Normothermic machine perfusion (NMP) is an alternative strategy for preserving kidneys donated after cardiac death (DCD). The relative efficacy of prolonged NMP compared to hypothermic machine perfusion (HMP) in DCD kidneys with moderate ischemic injury is undetermined. This study compares NMP and HMP kidney preservation in a porcine DCD model. METHODS: Ten porcine kidneys underwent NMP or HMP preservation following 45 minutes of warm ischemia and 5 hours of cold ischemia...
August 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28805266/hypothermic-pulsatile-preservation-of-kidneys-from-uncontrolled-deceased-donors-after-cardiac-arrest
#3
Xavier Matillon, Fabrice Danjou, Palmina Petruzzo, Olivier Thaunat, Thomas Rimmele, Claire Delsuc, Alexandre Faure, Maud Rabeyrin, Vannary Meas Yedid, William Hanf, Emmanuel Morelon, Lionel Badet, Ricardo Codas
Kidneys from uncontrolled donors after cardiac arrest (uDCD) suffer from a period of warm ischemia between cardiac arrest and cold flushing. Aim of the study was to evaluate renal outcomes of uDCD kidneys selected on the basis of renal Resistance Index (RI) and its influence on graft function and survival. The study included 44 kidneys procured from 26 uDCD starting 1.1.2006 until 31.12.2013. The donors (Maastricht category II) underwent cardiopulmonary resuscitation by assisted ventilation and chest compression; the organs were preserved with "in situ" cold perfusion or a normothermic regional perfusion...
August 14, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28798821/benchmarking-quality-for-renal-cancer-surgery-canadian-kidney-cancer-information-system-ckcis-perspective
#4
Keith A Lawson, Olli Saarela, Zhihui Liu, Luke T Lavallée, Rodney H Breau, Lori Wood, Michael A S Jewett, Anil Kapoor, Simon Tanguay, Ronald B Moore, Ricardo Rendon, Frederic Pouliot, Peter C Black, Jun Kawakami, Darrel Drachenberg, Antonio Finelli
INTRODUCTION: There is a lack of validated quality metrics to evaluate the care of patients receiving surgery for renal cell carcinoma (RCC). To address this, the Kidney Cancer Research Network of Canada defined a list of quality indicators (QI) to assess hospital-level performance. We have case-mix adjusted these QIs to benchmark RCC surgical care at Canadian academic centres. METHODS: The Canadian Kidney Cancer information system (CKCis) was used to measure six QIs: laparoscopic approach proportion (LA), partial nephrectomy proportion (PN), partial nephrectomy in patients with chronic kidney disease (CKDPN), positive margin rate (PMR), partial nephrectomy complication rate (PNCx), and warm ischemia time (WIT)...
August 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28794065/vasa-recta-pericyte-density-is-negatively-associated-with-vascular-congestion-in-the-renal-medulla-following-ischemia-reperfusion-in-rats
#5
G Ryan Crislip, Paul M O'Connor, Qingqing Wei, Jennifer C Sullivan
Recent evidence suggests that a greater density of pericytes in renal cadaveric allografts is associated with better recovery following transplant. The physiological mechanism(s) through which pericyte density may be beneficial is not well understood. The goal of this study was to test the hypothesis that lower medullary pericyte density is associated with greater renal injury following ischemia reperfusion (IR) in a rat model, providing a basis for future studies to better understand pericytes in a pathological environment...
August 9, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28792194/laparoscopic-partial-nephrectomy-for-tumors-7cm-and-above-perioperative-outcomes
#6
Matvey Tsivian, Efrat Tsivian, Yury Stanevsky, Roman Bass, A Ami Sidi, Alexander Tsivian
PURPOSE: To assess and report the outcomes of laparoscopic partial nephrectomy )LPN) for T2 renal masses. MATERIALS AND METHODS: Retrospective review of patients undergoing LPN for clinically localized renal masses ≥7cm between the years 2005-2016. Descriptive analyses were generated for demographics, lesion characteristics, perioperative variables (operative time, warm ischemia time (WIT), estimated blood loss (EBL), intra-operative and post-operative complications (IOC and POC) and pathologic variables (pathology, subtype and Fuhrman grade)...
August 8, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28753855/ischemia-and-functional-recovery-from-partial-nephrectomy-refined-perspectives
#7
Wen Dong, Jitao Wu, Chalairat Suk-Ouichai, Elvis Caraballo Antonio, Erick M Remer, Jianbo Li, Joseph Zabell, Sudhir Isharwal, Steven C Campbell
BACKGROUND: Nephron mass preservation is a key determinant of functional outcomes after partial nephrectomy (PN), while ischemia plays a secondary role. Analyses focused specifically on recovery of the operated kidney appear to be most informative, yet have only included limited numbers of patients. OBJECTIVE: To evaluate the relative impact of parenchymal preservation and ischemia on functional recovery after PN using a more robust cohort allowing for more refined perspectives about ischemia...
March 3, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28753814/functional-comparison-of-renal-tumor-enucleation-versus-standard-partial-nephrectomy
#8
Wen Dong, Gopal N Gupta, Robert H Blackwell, Jitao Wu, Chalairat Suk-Ouichai, Arpeet Shah, Sarah E Capodice, Marcus L Quek, Elvis Caraballo Antonio, Diego Aguilar Palacios, Erick M Remer, Jianbo Li, Joseph Zabell, Sudhir Isharwal, Steven C Campbell
BACKGROUND: Tumor enucleation (TE) optimizes parenchymal preservation and could yield better function than standard partial nephrectomy (SPN), although data on this are conflicting. OBJECTIVE: To compare functional outcomes for TE and SPN strategies. DESIGN, SETTING, AND PARTICIPANTS: Patients managed with partial nephrectomy (PN) with necessary data for analysis of preservation of ipsilateral parenchymal mass (IPM) and global glomerular filtration rate (GFR) from two centers were included...
June 16, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28750405/untargeted-dna-demethylation-therapy-neither-prevents-nor-attenuates-ischemia-reperfusion-induced-renal-fibrosis
#9
Benjamin A Vervaet, Lies Moonen, Lode Godderis, Katrien Poels, Patrick C D'Haese
BACKGROUND: Current treatment options for chronic kidney disease (CKD) are limited and their focus is on slowing its progression by addressing comorbidities. Fibrosis, the common histopathological process in CKD, is a major therapeutic research target. In CKD, fibroblasts are terminally activated due to alterations in their DNA-methylation pattern, particularly hypermethylation. Preventing the copying of pathological DNA-methylation patterns in proliferating fibroblasts could be a new effective therapeutic strategy for treating CKD...
July 28, 2017: Nephron
https://www.readbyqxmd.com/read/28749082/impact-of-warm-ischemia-time-on-postoperative-renal-function-after-partial-nephrectomy-for-clinical-t1-renal-cell-carcinoma-a-propensity-score-matched-study
#10
Hakmin Lee, Byung Do Song, Seok-Soo Byun, Sang Eun Lee, Sung Kyu Hong
OBJECTIVES: To preserve renal function, partial nephrectomy (PN) is recommended to patients with small renal masses. However, controversy still exists as to whether prolonged ischemia time adversely affects the incidence of chronic kidney disease (CKD) after PN. We analyzed the effect of prolonged warm ischemia time (WIT) on long-term renal function following PN. MATERIALS AND METHODS: We reviewed data from 1,816 patients who underwent PN for clinical T1 renal tumor...
July 27, 2017: BJU International
https://www.readbyqxmd.com/read/28749068/trifecta-outcomes-of-robot-assisted-partial-nephrectomy-in-solitary-kidney-a-vattikuti-collective-quality-initiative-vcqi-database-analysis
#11
Sohrab Arora, Ronney Abaza, James M Adshead, Rajesh K Ahlawat, Benjamin J Challacombe, Prokar Dasgupta, Giorgio Gandaglia, Daniel A Moon, T B Yuvaraja, Umberto Capitanio, Alessandro Larcher, Francesco Porpiglia, James R Porter, Alexander Mottrie, Mahendra Bhandari, Craig Rogers
OBJECTIVES: To analyze the outcomes of robot-assisted partial nephrectomy (RAPN) in patients with a solitary kidney in a large multi-institutional database. PATIENTS AND METHODS: A total of 2755 patients in the Vattikuti Collective Quality Initiative database underwent RAPN by 22 surgeons at 14 centers in nine 9 countries. Out of these patients, 74 underwent RAPN in solitary kidney between 2007 and 2016. A retrospective analysis of the functional and oncological outcomes was performed...
July 27, 2017: BJU International
https://www.readbyqxmd.com/read/28742013/first-canadian-experience-with-donation-after-cardiac-death-simultaneous-pancreas-and-kidney-transplants
#12
Patrick T Anderson, Shahid Aquil, Kelly McLean, Vivian C McAlister, Alp Sener, Patrick P Luke
BACKGROUND: Compared with neurologic determination of death (NDD) donor organs, donation after cardiac death (DCD) donor organs have traditionally been considered of inferior quality owing to warm ischemia experienced during procurement. We present, to our knowledge, the first analysis of simultaneous pancreas and kidney (SPK) transplants using DCD donor organs in Canada. METHODS: We carried out a retrospective cohort study of SPK transplants from 13 DCD and 68 NDD donors performed between October 2008 and July 2016...
August 1, 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/28739404/laparoscopic-partial-nephrectomy-with-sequential-precise-tumor-specific-segmental-renal-artery-clamping-for-multiple-ipsilateral-renal-tumors-a-new-treatment-approach-and-initial-experience
#13
Mingyue Tan, Yongzhi Xu, Dongliang Xu, Juntao Jiang, Wei Zhao, Di Cui, Yuan Ruan, Shujie Xia
OBJECTIVE: To present our surgical approach and initial experience of laparoscopic partial nephrectomy (LPN) with sequential precise tumor-specific segmental renal artery clamping in patients with multiple ipsilateral renal tumors. MATERIALS AND METHODS: Six patients with multiple ipsilateral renal tumors having imperative indications for nephron-sparing surgery underwent LPN with sequential precise tumor-specific segmental renal artery clamping from May 2012 to September 2015...
July 21, 2017: Urology
https://www.readbyqxmd.com/read/28723490/renal-preservation-and-partial-nephrectomy-patient-and-surgical-factors
#14
REVIEW
Lorenzo Marconi, Mihir M Desai, Vincenzo Ficarra, Francesco Porpiglia, Hendrik Van Poppel
CONTEXT: Optimization of the partial nephrectomy (PN) procedure in terms of preservation of functional outcomes is of special importance. OBJECTIVE: To review the most important patient and surgical factors that may influence the three elements that ultimately define the preservation of renal function (RF) after PN: preoperative RF, quantity of parenchyma preserved, and nephron recovery from ischemic insult. EVIDENCE ACQUISITION: A nonsystematic review of the literature was conducted...
December 15, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28717275/initial-experience-of-robotic-nephron-sparing-surgery-in-cases-of-high-renal-nephrometry-scores
#15
Girdhar S Bora, Ravimohan S Mavuduru, Aditya P Sharma, Sudheer K Devana, Nandita Kakkar, Anupam Lal, Shrawan K Singh, Arup K Mandal
INTRODUCTION: The renal nephrometry scoring (RNS) system enables prediction the feasibility of nephron-sparing surgery (NSS) in renal masses. There is insufficient data regarding the outcome of robot-assisted NSS in tumors with RNS ≥10. We reviewed the trifecta outcomes of patients undergoing robotic NSS with high RNS and compare it with tumors of low and intermediate RNS. MATERIALS AND METHODS: Our prospectively maintained data of all robot-assisted NSS were reviewed, and those with RNS of ≥10 were identified...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28710786/comparison-of-perioperative-and-functional-outcomes-of-robotic-partial-nephrectomy-for-ct1a-versus-ct1b-renal-masses
#16
Christopher R Reynolds, Joan C Delto, David Paulucci, Corey Weinstein, Ketan Badani, Daniel Eun, Ronney Abaza, James Porter, Akshay Bhandari, Ashok Hemal
OBJECTIVES: To compare perioperative and functional outcomes of patients with cT1a or cT1b renal masses undergoing robotic partial nephrectomy in a large multi-institutional study. PATIENTS AND METHODS: The present retrospective IRB approved multi-institutional study utilized a prospectively maintained database to identify patients undergoing robotic partial nephrectomy by 6 surgeons for a solitary cT1a (n=1307) or cT1b (n=377) renal mass from 2006 to 2016. Perioperative and renal function outcomes at discharge and median follow-up of 12...
July 15, 2017: BJU International
https://www.readbyqxmd.com/read/28708967/investigation-of-the-effect-of-milrinone-on-renal-damage-in-an-experimental-non-heart-beating-donor-model
#17
Erdal Uysal, Mehmet Dokur, Serdar Altınay, Eyup İlker Saygılı, Kadir Batcıoglu, Mehmet S Ceylan, Hatem Kazımoglu, Burcin A Uyumlu, Mehmet Karadag
PURPOSE: In our study, it was aimed to investigate the preventive effect of milrinone on renal damage in experimental controlled non-heart-beating donors (NHBDs) model. MATERIALS AND METHODS: Sixteen rats randomly divided into 2 groups, 8 rats in each were used. Group 1 was control, group 2 was milrinone group. Group 1 rats received 1.25 ml 0.09% NaCl intraperitoneally equivalent to the milrinone diluted volume. Group 2 rats were administered intraperitoneally with 0...
July 14, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28707667/-the-activity-of-proapoptotic-genes-increases-after-renal-ischemia-reperfusion
#18
O I Kit, D I Vodolazhsky, S N Dimitriadi, D S Kutilin, N N Timoshkina, E N Gudueva, E M Frantsiyants
According to the World Health Organization, pathologies associated with ischemia/reperfusion occupy the leading position in the structure of mortality. The efficiency of localized kidney cancer surgery is limited by the damaging effects of prolonged warm ischemia and reperfusion. Ischemia/reperfusion damage to renal tissue may be related to changes in the expression profiles of pro- and antiapoptotic genes. Here, we have presented the longitudinal expression profiles of apoptosis-related genes in tissues of left and right (intact) kidneys of male rats exposed to unilateral ischemia followed by reperfusion...
May 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28679176/comparison-of-robotic-and-laparoscopic-partial-nephrectomy-for-small-renal-tumours
#19
Abdulmuttalip Simsek, Abdullah Hizir Yavuzsan, Yunus Colakoglu, Arda Atar, Selcuk Sahin, Volkan Tugcu
OBJECTIVE: To evaluate a single surgeon oncological and functional outcomes of laparoscopic partial nephrectomy (LPN) compared to robotic partial nephrectomy (RPN) for pT1a renal tumours. MATERIALS AND METHODS: Between 2006 and 2016, a retrospective review of 42 patients who underwent LPN (n = 20) or RPN (n = 22) by same surgeon was performed. Patients were matched for gender, age, body mass index (BMI), American Society of Anaesthesiologists (ASA) score, tumour side, RENAL and PADUA scores, peri-operative and post-operative outcomes...
June 30, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28637093/intra-abdominal-cooling-system-limits-ischemia-reperfusion-injury-during-robot-assisted-renal-transplantation
#20
R P H Meier, V Piller, M E Hagen, C Joliat, J-B Buchs, A Nastasi, R Ruttimann, N C Buchs, S Moll, J-P Vallée, F Lazeyras, P Morel, L Bühler
Robot-assisted kidney transplantation is feasible; however, concerns have been raised about possible increases in warm ischemia times. We describe a novel intra-abdominal cooling system to continuously cool the kidney during the procedure. Porcine kidneys were procured by standard open technique. Groups were as follows: Robotic renal transplantation with (n = 11) and without (n = 6) continuous intra-abdominal cooling and conventional open technique with intermittent 4°C saline cooling (n = 6). Renal cortex temperature, magnetic resonance imaging, and histology were analyzed...
June 21, 2017: American Journal of Transplantation
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