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Ex Vivo Fluorescence Confocal Microscopy (FCM) Ensures Representative Tissue in Prostate Cancer Biobanking: A Feasibility Study. Int J Mol Sci 2022; 23:ijms232012103. [PMID: 36292970 PMCID: PMC9603154 DOI: 10.3390/ijms232012103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 09/24/2022] [Accepted: 09/30/2022] [Indexed: 12/05/2022] Open
Abstract
Background: Biobanking of prostate carcinoma is particularly challenging due to the actual cancer within the organ often without clear margins. Frozen sections are to date the only way to examine the biobank material for its tumor content. We used ex vivo fluorescence confocal microscopy (FCM) to analyze biobank samples prior to cryoasservation. Methods: 127 punch biopsies were acquired from prostatectomy-specimens from 40 patients. These biopsies were analyzed with a Vivascope 2500-G4 prior to their transfer to the biobank. In difficult cases, larger samples of the prostatectomy specimens were FCM scanned in order to locate tumor foci. After patient acquisition, all samples were taken from the biobank and analyzed. We compared the results of the FCM examinations with the results of conventional histology and measured the DNA content. Results: With upstream FCM, the tumor content of biobank samples could be determined with high confidence. The detection rate of representative biobank samples was increased due to the rapid feedback. The biobank samples were suitable for further molecular analysis. Conclusion: FCM allows for the first time lossless microscopic analysis of biobank samples prior to their cryoasservation and guarantees representative tumor and normal tissue for further molecular analysis.
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Cai PY, Asad M, Augello MA, Martin L, Louie C, Basourakos SP, Gaffney CD, Shoag J, Tu JJ, Khani F, Mosquera JM, Loda M, Scherr DS, Barbieri CE, Robinson BD. A multidisciplinary approach to optimize primary prostate cancer biobanking. Urol Oncol 2022; 40:271.e1-271.e7. [DOI: 10.1016/j.urolonc.2022.03.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 03/06/2022] [Accepted: 03/24/2022] [Indexed: 12/13/2022]
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Somiari SB, Shuss S, Liu J, Mamula K, O’Donnell A, Deyarmin B, Kane J, Greenawalt A, Larson C, Rigby S, Hu H, Shriver CD. Assessing the quality of RNA isolated from human breast tissue after ambient room temperature exposure. PLoS One 2022; 17:e0262654. [PMID: 35041696 PMCID: PMC8765617 DOI: 10.1371/journal.pone.0262654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 01/03/2022] [Indexed: 11/19/2022] Open
Abstract
High quality human tissue is essential for molecular research, but pre-analytical conditions encountered during tissue collection could degrade tissue RNA. We evaluated how prolonged exposure of non-diseased breast tissue to ambient room temperature (22±1°C) impacted RNA quality. Breast tissue received between 70 to 190 minutes after excision was immediately flash frozen (FF) or embedded in Optimal Cutting Temperature (OCT) compound upon receipt (T0). Additional breast tissue pieces were further exposed to increments of 60 (T1 = T0+60 mins), 120 (T2 = T0+120 mins) and 180 (T3 = T0+180 mins) minutes of ambient room temperature before processing into FF and OCT. Total exposure, T3 (T0+180 mins) ranged from 250 minutes to 370 minutes. All samples (FF and OCT) were stored at -80°C before RNA isolation. The RNA quality assessment based on RNA Integrity Number (RIN) showed RINs for both FF and OCT samples were within the generally acceptable range (mean 7.88±0.90 to 8.52±0.66). No significant difference was observed when RIN at T0 was compared to RIN at T1, T2 and T3 (FF samples, p = 0.43, 0.56, 0.44; OCT samples, p = 0.25, 0.82, 1.0), or when RIN was compared between T1, T2 and T3. RNA quality assessed by quantitative real-time PCR (qRT-PCR) analysis of beta-actin (ACTB), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), cyclophilin A (CYPA), and porphobilinogen deaminase (PBGD) transcripts showed threshold values (Ct) that indicate abundant and intact target nucleic acid in all samples (mean ranging from 14.1 to 25.3). The study shows that higher RIN values were obtained for non-diseased breast tissue up to 190 minutes after resection and prior to stabilization. Further experimental exposure up to 180 minutes had no significant effect on RIN values. This study strengthens the rationale for assessing RIN and specific gene transcript levels as an objective method for determining how suitable RNA will be for a specific research purpose (“fit-for purpose”).
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Affiliation(s)
- Stella B. Somiari
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
- * E-mail:
| | - Susan Shuss
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Jianfang Liu
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Kimberly Mamula
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Amy O’Donnell
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Brenda Deyarmin
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Jennifer Kane
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Amber Greenawalt
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Caroline Larson
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Sean Rigby
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
| | - Hai Hu
- Chan Soon-Shiong Institute of Molecular Medicine at Windber, Windber, Pennsylvania, United States of America
- Murtha Cancer Center Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Craig D. Shriver
- Murtha Cancer Center Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
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A New Technique in Fresh Prostate Cancer Tissue Biobanking Based on MRI-Transrectal Ultrasound Fusion Biopsy. Urology 2019; 134:186-191. [PMID: 31487510 DOI: 10.1016/j.urology.2019.08.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 08/13/2019] [Accepted: 08/21/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To present and validate a new technique for biobanking fresh-frozen prostate cancer tissue based on MRI-transrectal ultrasound fusion biopsy. MATERIALS AND METHODS From August 2014 to August 2016, patients with elevated levels of PSA and at least 1 suspicious lesion on MRI were invited to this study. Each MRI-suspicious lesion was biopsied repeatedly for at least 2 cores in the same location. These repeated cores were labelled A/A', B/B', etc. The A/B cores were submitted for histologic assessment, and the corresponding A'/B' cores were stored in an -80°C freezer for biobanking. Sixty biobanked samples were processed for histologic assessment to compare their pathologic parameters with their corresponding paraffin samples. Another 20 biobanked samples were processed for RNA quality evaluation. RESULTS Fifty-six of the 60 selected banking samples matched their corresponding paraffin samples for benign vs malignant diagnosis, leading an overall concordance rate of 93.3%. There was no significant difference between banking samples and the corresponding paraffin samples in cancer percentage and Gleason score. The RNA Integrity Number value ranged from 6.8 to 9.3 (mean 7.89). CONCLUSION The current study demonstrates that the histologic identity of the banked prostate biopsy sample can be accurately predicted by its corresponding paraffin samples. MRI-TRUS fusion biopsy based biobanking method is highly efficient, timesaving, and has high quality tissues both at the histologic and RNA integrity levels.
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Fast prostate retrieval in robot-assisted laparoscopic prostatectomy for next-generation biobanking. J Robot Surg 2019; 14:271-274. [PMID: 31129776 DOI: 10.1007/s11701-019-00974-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 05/14/2019] [Indexed: 10/26/2022]
Abstract
Robotic-assisted laparoscopic radical prostatectomy (RALP) has become the most widespread treatment for organ-confined prostate cancer. Here, we describe a fast specimen retrieval technique for RALP to obtain high-quality tissue specimen with minimal warm ischemia time for next-generation biobanking. Here, we show that using fast retrieval technique, short warm ischemia times can be achieved while not increasing the surgical time. Patients undergoing RALP with written informed consent participated in Helsinki Urological Bank study. Previously operated RALP patients and those, who were not willing to participate in the study, served as a control group. The study consisted of 1685 patients, 684 in fast retrieval and 1001 in control group. We developed a novel fast retrieval technique in which fascia is opened for camera port according to the prostate size and a running suture is placed and tightened against the camera port in the beginning of the operation. Immediately after prostate is freed from attachments, suture is loosened and the prostate is extirpated inside the endoscopic bag through the camera port fascial opening, then the fascial suture is again tightened against the camera port and the RALP procedure is completed. The mean warm ischemia times in fast retrieval group were 20 min 18 s and 22 min 30 s, respectively, in patients without and with lymphadenectomy. The mean console and surgery times with and without lymphadenectomy were similar in both groups. There were no technique-related complications associated with Fast Retrieval procedure. Tissue integrity test results for the RNA and DNA quality showed good quality for the specimen. Fast retrieval technique can easily and safely be utilized to maximize usefulness of RALP tissue specimen in downstream biobank applications.
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Heavey S, Costa H, Pye H, Burt EC, Jenkinson S, Lewis G, Bosshard‐Carter L, Watson F, Jameson C, Ratynska M, Ben‐Salha I, Haider A, Johnston EW, Feber A, Shaw G, Sridhar A, Nathan S, Rajan P, Briggs TP, Sooriakumaran P, Kelly JD, Freeman A, Whitaker HC. PEOPLE: PatiEnt prOstate samPLes for rEsearch, a tissue collection pathway utilizing magnetic resonance imaging data to target tumor and benign tissue in fresh radical prostatectomy specimens. Prostate 2019; 79:768-777. [PMID: 30807665 PMCID: PMC6618051 DOI: 10.1002/pros.23782] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 02/07/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Over 1 million men are diagnosed with prostate cancer each year worldwide, with a wide range of research programs requiring access to patient tissue samples for development of improved diagnoses and treatments. A random sampling of prostate tissue is sufficient for certain research studies; however, there is growing research need to target areas of the aggressive tumor as fresh tissue. Here we set out to develop a new pathway "PEOPLE: PatiEnt prOstate samPLes for rEsearch" to collect high-quality fresh tissue for research use, using magnetic resonance imaging (MRI) to target areas of tumor and benign tissue. METHODS Prostate tissue was sampled following robotic radical prostatectomy, using MRI data to target areas of benign and tumor tissue. Initially, 25 cases were sampled using MRI information from clinical notes. A further 59 cases were sampled using an optimized method that included specific MRI measurements of tumor location along with additional exclusion criteria. All cases were reviewed in batches with detailed clinical and histopathological data recorded. For one subset of samples, DNA was extracted and underwent quality control. Ex vivo culture was carried out using the gelatin sponge method for an additional subset. RESULTS Tumor was successfully fully or partially targeted in 64% of the initial cohort and 70% of the optimized cohort. DNA of high quality and concentration was isolated from 39 tumor samples, and ex vivo culture was successfully carried out in three cases with tissue morphology, proliferation, and apoptosis remaining comparable before and after 72 hours culture. CONCLUSION Here we report initial data from the PEOPLE pathway; using a method for targeting areas of tumor within prostate samples using MRI. This method operates alongside the standard clinical pathway and minimizes additional input from surgical, radiological, and pathological teams, while preserving surgical margins and diagnostic tissue.
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Affiliation(s)
- Susan Heavey
- Molecular Diagnostics and Therapeutics GroupUniversity College LondonLondonUK
| | - Helena Costa
- Research Department of PathologyUniversity College LondonLondonUK
| | - Hayley Pye
- Molecular Diagnostics and Therapeutics GroupUniversity College LondonLondonUK
| | - Emma C. Burt
- Department of Molecular HaematologyBarts Health NHS Trust, The Royal London HospitalLondonUK
| | - Sophia Jenkinson
- Research Department of PathologyUniversity College LondonLondonUK
| | | | | | - Fran Watson
- Research Department of PathologyUniversity College LondonLondonUK
| | - Charles Jameson
- Research Department of PathologyUniversity College LondonLondonUK
| | - Marzena Ratynska
- Research Department of PathologyUniversity College LondonLondonUK
| | - Imen Ben‐Salha
- Research Department of PathologyUniversity College LondonLondonUK
| | - Aiman Haider
- Research Department of PathologyUniversity College LondonLondonUK
| | | | - Andrew Feber
- Divison of Surgery and Interventional SciencesUniversity College LondonLondonUK
| | - Greg Shaw
- Department of Uro‐OncologyUCLH NHS Foundation TrustLondonUK
| | - Ashwin Sridhar
- Department of Uro‐OncologyUCLH NHS Foundation TrustLondonUK
| | - Senthil Nathan
- Department of Uro‐OncologyUCLH NHS Foundation TrustLondonUK
| | | | - Timothy P. Briggs
- Department of Uro‐OncologyUCLH NHS Foundation TrustLondonUK
- Centre for Molecular Oncology, Barts Cancer InstituteQueen Mary University of LondonLondonUK
| | | | - John D. Kelly
- Department of Uro‐OncologyUCLH NHS Foundation TrustLondonUK
| | - Alex Freeman
- Research Department of PathologyUniversity College LondonLondonUK
| | - Hayley C. Whitaker
- Molecular Diagnostics and Therapeutics GroupUniversity College LondonLondonUK
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Alexander J, Kendall J, McIndoo J, Rodgers L, Aboukhalil R, Levy D, Stepansky A, Sun G, Chobardjiev L, Riggs M, Cox H, Hakker I, Nowak DG, Laze J, Llukani E, Srivastava A, Gruschow S, Yadav SS, Robinson B, Atwal G, Trotman LC, Lepor H, Hicks J, Wigler M, Krasnitz A. Utility of Single-Cell Genomics in Diagnostic Evaluation of Prostate Cancer. Cancer Res 2017; 78:348-358. [PMID: 29180472 DOI: 10.1158/0008-5472.can-17-1138] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/23/2017] [Accepted: 11/10/2017] [Indexed: 12/18/2022]
Abstract
A distinction between indolent and aggressive disease is a major challenge in diagnostics of prostate cancer. As genetic heterogeneity and complexity may influence clinical outcome, we have initiated studies on single tumor cell genomics. In this study, we demonstrate that sparse DNA sequencing of single-cell nuclei from prostate core biopsies is a rich source of quantitative parameters for evaluating neoplastic growth and aggressiveness. These include the presence of clonal populations, the phylogenetic structure of those populations, the degree of the complexity of copy-number changes in those populations, and measures of the proportion of cells with clonal copy-number signatures. The parameters all showed good correlation to the measure of prostatic malignancy, the Gleason score, derived from individual prostate biopsy tissue cores. Remarkably, a more accurate histopathologic measure of malignancy, the surgical Gleason score, agrees better with these genomic parameters of diagnostic biopsy than it does with the diagnostic Gleason score and related measures of diagnostic histopathology. This is highly relevant because primary treatment decisions are dependent upon the biopsy and not the surgical specimen. Thus, single-cell analysis has the potential to augment traditional core histopathology, improving both the objectivity and accuracy of risk assessment and inform treatment decisions.Significance: Genomic analysis of multiple individual cells harvested from prostate biopsies provides an indepth view of cell populations comprising a prostate neoplasm, yielding novel genomic measures with the potential to improve the accuracy of diagnosis and prognosis in prostate cancer. Cancer Res; 78(2); 348-58. ©2017 AACR.
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Affiliation(s)
- Joan Alexander
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Jude Kendall
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Jean McIndoo
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Linda Rodgers
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | | | - Dan Levy
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Asya Stepansky
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Guoli Sun
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Lubomir Chobardjiev
- Technological School of Electronic Systems, Technical University of Sofia, Sofia, Bulgaria
| | - Michael Riggs
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Hilary Cox
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Inessa Hakker
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Dawid G Nowak
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Juliana Laze
- Department of Urology, New York University Langone Medical Center, New York, New York
| | - Elton Llukani
- Department of Urology, New York University Langone Medical Center, New York, New York
| | - Abhishek Srivastava
- Department of Urology, Weill Medical College of Cornell University, New York, New York
| | - Siobhan Gruschow
- Department of Urology, Weill Medical College of Cornell University, New York, New York
| | - Shalini S Yadav
- Department of Urology, Weill Medical College of Cornell University, New York, New York
| | - Brian Robinson
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, New York
| | - Gurinder Atwal
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | | | - Herbert Lepor
- Department of Urology, New York University Langone Medical Center, New York, New York
| | - James Hicks
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Michael Wigler
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
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Lindh C, Delahunt B, Samaratunga H, Yaxley J, Gudjónsdóttir J, Clements M, Lindberg J, Egevad L. A novel technique for biobanking of large sections of radical prostatectomy specimens. Histopathology 2017; 72:481-489. [PMID: 28881048 DOI: 10.1111/his.13386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/03/2017] [Indexed: 12/11/2022]
Abstract
AIMS Harvesting of unfixed tissue from radical prostatectomy specimens for research purposes is challenging. Many prostate cancers cannot be identified at gross inspection, and this tumour is notoriously multifocal and heterogeneous. We aimed to develop a technique to allow detailed topographic analysis and the sampling of a sufficient amount of tumour without jeopardising clinical reporting. METHODS AND RESULTS A custom-made double-bladed knife was utilised for cutting a 4-mm-thick horizontal section of the prostate. The slices were split into segments that were frozen in gel, cryosections were cut, and RNA integrity numbers (RINs) were analysed. Sections were cut from all blocks of 20 cases, and the cutting time was monitored. Slides were scanned, and the slices were digitally reconstructed. Cutting frozen sections of an entire slice took 79-253 min (mean 162 min). Tumour was detected in frozen sections of 85% (17/20) of cases and in 46% (72/155) of blocks. The morphological quality was determined to be excellent, and RIN values were high (mean 8.9). CONCLUSIONS This novel protocol for biobanking of fresh tissue from prostatectomy specimens provides sufficient tumour material for research purposes, while also enabling reporting of histopathology. The harvesting of a full tissue slice facilitates studies of tumour multifocality and heterogeneity.
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Affiliation(s)
- Claes Lindh
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Brett Delahunt
- Wellington School of Medicine and Health Sciences, University of Otago, Wellington, New Zealand
| | - Hemamali Samaratunga
- Aquesta Pathology and University of Queensland School of Medicine, Brisbane, Queensland, Australia
| | - John Yaxley
- Wesley Hospital, Brisbane, Queensland, Australia
| | - Jóna Gudjónsdóttir
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Mark Clements
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Johan Lindberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Lars Egevad
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
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Abstract
OBJECTIVES Attaining high-quality RNA from the tissues or organs of deceased donors used for research can be challenging due to physiological and logistical considerations. In this investigation, METHODS: RNA Integrity Number (RIN) was determined in pancreatic samples from 236 organ donors and used to define high (≥6.5) and low (≤4.5) quality RNAs. Logistic regression was used to evaluate the potential effects of novel or established organ and donor factors on RIN. RESULTS Univariate analysis revealed donor cause of death (odds ratio [OR], 0.35; 95% confidence interval [CI], 0.15-0.77; P = 0.01), prolonged tissue storage before RNA extraction (OR, 0.65; 95% CI, 0.52-0.79; P < 0.01), pancreas region sampled (multiple comparisons, P < 0.01), and sample type (OR, 0.32; 95% CI, 0.15-0.67; P < 0.01) negatively influenced outcome. Conversely, duration of final hospitalization (OR, 3.95; 95% CI, 1.59-10.37; P < 0.01) and sample collection protocol (OR, 8.48; 95% CI, 3.96-19.30; P < 0.01) positively impacted outcome. Islet RNA obtained via laser capture microdissection improved RIN when compared with total pancreatic RNA from the same donor (ΔRIN = 1.3; 95% CI, 0.6-2.0; P < 0.01). CONCLUSIONS A multivariable model demonstrates that autopsy-free and biopsy-free human pancreata received, processed, and preserved at a single center, using optimized procedures, from organ donors dying of anoxia with normal lipase levels increase the odds of obtaining high-quality RNA.
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Grizzle WE, Otali D, Sexton KC, Atherton DS. Effects of Cold Ischemia on Gene Expression: A Review and Commentary. Biopreserv Biobank 2016; 14:548-558. [PMID: 27551929 DOI: 10.1089/bio.2016.0013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Frequently investigators request that tissues be collected and processed in less than one hour following removal from a patient. Some biorepositories expend significant personnel time and other resources in trying to meet such goals; however, it is unclear whether the perceived benefits of relatively short cold ischemia times warrant these added costs. The literature of human surgical tissues prospectively exposed to cold ischemia at several time points was reviewed to compare the changes in transcripts/genes and microRNA with time of cold ischemia. Also, reports of protein changes in response to cold ischemia were correlated to changes in genes. The literature is limited; however, for most tissues, only a small proportion of transcripts/genes (<1%) changes up to 3 hours following surgery and most transcripts increase rather than decrease in less than 2 hours of cold ischemia. Biorepositories and investigators must consider the literature for evidence of significant changes in molecular results from tissues before spending significant resources on relatively rapid collection of tissues to meet cold ischemia times of less than 3 hours. Instead, those using human tissues in research must consider if the cold ischemia times affect their use in specific research; hence are these tissues "fit for purpose?"
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Affiliation(s)
- William E Grizzle
- Department of Pathology and the Comprehensive Cancer Center, The University of Alabama at Birmingham , Birmingham, Alabama
| | - Dennis Otali
- Department of Pathology and the Comprehensive Cancer Center, The University of Alabama at Birmingham , Birmingham, Alabama
| | - Katherine C Sexton
- Department of Pathology and the Comprehensive Cancer Center, The University of Alabama at Birmingham , Birmingham, Alabama
| | - Daniel S Atherton
- Department of Pathology and the Comprehensive Cancer Center, The University of Alabama at Birmingham , Birmingham, Alabama
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Terada M, Seki M, Takahashi R, Yamada S, Higashibata A, Majima HJ, Sudoh M, Mukai C, Ishioka N. Effects of a Closed Space Environment on Gene Expression in Hair Follicles of Astronauts in the International Space Station. PLoS One 2016; 11:e0150801. [PMID: 27029003 PMCID: PMC4814050 DOI: 10.1371/journal.pone.0150801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 02/19/2016] [Indexed: 11/24/2022] Open
Abstract
Adaptation to the space environment can sometimes pose physiological problems to International Space Station (ISS) astronauts after their return to earth. Therefore, it is important to develop healthcare technologies for astronauts. In this study, we examined the feasibility of using hair follicles, a readily obtained sample, to assess gene expression changes in response to spaceflight adaptation. In order to investigate the gene expression changes in human hair follicles during spaceflight, hair follicles of 10 astronauts were analyzed by microarray and real time qPCR analyses. We found that spaceflight alters human hair follicle gene expression. The degree of changes in gene expression was found to vary among individuals. In some astronauts, genes related to hair growth such as FGF18, ANGPTL7 and COMP were upregulated during flight, suggesting that spaceflight inhibits cell proliferation in hair follicles.
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Affiliation(s)
- Masahiro Terada
- Divison of Aerospace Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
- Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, California, United States of America
- * E-mail:
| | - Masaya Seki
- Advanced Engineering Services Co., Ltd., Takezono, Tsukuba City, Ibaraki, Japan
| | - Rika Takahashi
- Advanced Engineering Services Co., Ltd., Takezono, Tsukuba City, Ibaraki, Japan
| | - Shin Yamada
- Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
| | - Akira Higashibata
- Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima City, Kagoshima, Japan
| | - Hideyuki J. Majima
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima City, Kagoshima, Japan
| | - Masamichi Sudoh
- Divison of Aerospace Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
- Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
| | - Chiaki Mukai
- Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
| | - Noriaki Ishioka
- Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima City, Kagoshima, Japan
- Institute of Space and Astronautical Science, Sagamihara, Kanagawa, Japan
- Department of Space and Astronautical Science, School of Physical Sciences, SOKENDAI (The Graduate University for Advanced Studies), Sagamihara, Kanagawa, Japan
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12
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Guerrera F, Tabbò F, Bessone L, Maletta F, Gaudiano M, Ercole E, Annaratone L, Todaro M, Boita M, Filosso PL, Solidoro P, Delsedime L, Oliaro A, Sapino A, Ruffini E, Inghirami G. The Influence of Tissue Ischemia Time on RNA Integrity and Patient-Derived Xenografts (PDX) Engraftment Rate in a Non-Small Cell Lung Cancer (NSCLC) Biobank. PLoS One 2016; 11:e0145100. [PMID: 26731692 PMCID: PMC4701130 DOI: 10.1371/journal.pone.0145100] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 11/28/2015] [Indexed: 01/13/2023] Open
Abstract
Introduction Bio-repositories are invaluable resources to implement translational cancer research and clinical programs. They represent one of the most powerful tools for biomolecular studies of clinically annotated cohorts, but high quality samples are required to generate reliable molecular readouts and functional studies. The objective of our study was to define the impact of cancer tissue ischemia time on RNA and DNA quality, and for the generation of Patient-Derived Xenografts (PDXs). Methods One-hundred thirty-five lung cancer specimens were selected among our Institutional BioBank samples. Associations between different warm (surgical) and cold (ex-vivo) ischemia time ranges and RNA quality or PDXs engraftment rates were assessed. RNA quality was determined by RNA integrity number (RINs) values. Fresh viable tissue fragments were implanted subcutaneously in NSG mice and serially transplanted. Results RNAs with a RIN>7 were detected in 51% of the sample (70/135), with values of RIN significantly lower (OR 0.08, P = 0.01) in samples preserved for more than 3 hours before cryopreservation. Higher quality DNA samples had a concomitant high RIN. Sixty-three primary tumors (41 adenocarcinoma) were implanted with an overall engraftment rate of 33%. Both prolonged warm (>2 hours) and ex-vivo ischemia time (>10 hours) were associated to a lower engraftment rate (OR 0.09 P = 0.01 and OR 0.04 P = 0.008, respectively). Conclusion RNA quality and PDXs engraftment rate were adversely affected by prolonged ischemia times. Proper tissue collection and processing reduce failure rate. Overall, NSCLC BioBanking represents an innovative modality, which can be successfully executed in routine clinical settings, when stringent Standard Operating Procedures are adopted.
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MESH Headings
- Aged
- Animals
- Carcinoma, Non-Small-Cell Lung/blood supply
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/pathology
- DNA, Neoplasm/genetics
- DNA, Neoplasm/metabolism
- Female
- Graft Survival
- Humans
- Interleukin Receptor Common gamma Subunit/deficiency
- Interleukin Receptor Common gamma Subunit/genetics
- Ischemia
- Lung Neoplasms/blood supply
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Male
- Mice, Inbred NOD
- Mice, Knockout
- Mice, SCID
- Middle Aged
- Multiplex Polymerase Chain Reaction
- RNA Stability
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- Retrospective Studies
- Reverse Transcriptase Polymerase Chain Reaction
- Time Factors
- Tissue Banks
- Transplantation, Heterologous
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Affiliation(s)
- Francesco Guerrera
- Department of Thoracic Surgery, University of Torino, 10126, Torino, Italy
- * E-mail:
| | - Fabrizio Tabbò
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies, University of Torino, 10126, Torino, Italy
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, 10021, United States of America
| | - Luca Bessone
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies, University of Torino, 10126, Torino, Italy
| | - Francesca Maletta
- Department of Medical Sciences, University of Torino, 10126, Torino, Italy
| | - Marcello Gaudiano
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies, University of Torino, 10126, Torino, Italy
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, 10021, United States of America
| | - Elisabetta Ercole
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies, University of Torino, 10126, Torino, Italy
| | - Laura Annaratone
- Department of Medical Sciences, University of Torino, 10126, Torino, Italy
| | - Maria Todaro
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies, University of Torino, 10126, Torino, Italy
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, 10021, United States of America
| | - Monica Boita
- Department of Medical Sciences, Allergology and Immunology, University of Torino, 10126, Torino, Italy
| | - Pier Luigi Filosso
- Department of Thoracic Surgery, University of Torino, 10126, Torino, Italy
| | - Paolo Solidoro
- Unit of Pulmonology, San Giovanni Battista Hospital, 10126, Torino, Italy
| | - Luisa Delsedime
- Department of Medical Sciences, University of Torino, 10126, Torino, Italy
| | - Alberto Oliaro
- Department of Thoracic Surgery, University of Torino, 10126, Torino, Italy
| | - Anna Sapino
- Department of Medical Sciences, University of Torino, 10126, Torino, Italy
| | - Enrico Ruffini
- Department of Thoracic Surgery, University of Torino, 10126, Torino, Italy
| | - Giorgio Inghirami
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies, University of Torino, 10126, Torino, Italy
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, 10021, United States of America
- Department of Pathology and NYU Cancer Center, New York University School of Medicine, New York, NY, 10016, United States of America
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Ondracek RP, Cheng J, Gangavarapu KJ, Azabdaftari G, Woltz J, Brese E, Omilian A, Bshara W, Huss W, Mohler JL, Marshall JR. Impact of devascularization and tissue procurement on cell number and RNA integrity in prostatectomy tissue. Prostate 2015; 75:1910-5. [PMID: 26350767 PMCID: PMC4746721 DOI: 10.1002/pros.23087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/18/2015] [Indexed: 11/06/2022]
Abstract
BACKGROUND Minimizing the time between tissue devascularization in robot-assisted laparoscopic radical prostatectomy (RALP) and tissue procurement should produce the highest quality tissue for research study. This study examines the relationship between intra-operative time and two indicators of tissue integrity: number of epithelial cells per gram of tissue and RNA integrity numbers (RINs). The study also compares the RIN values of tissue obtained intra-operatively by biopsy, before and after devascularization, to those from RALP specimen tissue, obtained through the routine research tissue procurement process. METHODS Prostate tissues from two series of patients were analyzed. In the first, tissue from 18 patients undergoing RALP was analyzed for number of epithelial cells per gram of tissue. In the second, RIN values of tissue from 46 patients involved in a clinical study were analyzed. RIN values were assessed from RALP specimen tissue as well as tissue removed intra-operatively by biopsy, before and after devascularization. RESULTS Time from RALP to tissue procurement was not significantly associated with number of epithelial cells per gram of tissue or with RIN values. RINs of biopsy tissue obtained intra-operatively before and after devascularization were similar. However, the RIN values of tissue from RALP specimens were significantly higher than those of biopsy tissue obtained either before or after devascularization. CONCLUSIONS Tissue quality, defined by number of epithelial cells or RIN values, was not affected by time between devascularization and procurement. Obtaining tissue from intra-operative biopsies, either before or after devascularization, is not necessary and actually produced lower RINs than found in tissue from RALP specimens, obtained through the routine research tissue procurement process.
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Affiliation(s)
| | - Jinrong Cheng
- Department of Cancer Prevention and Population Science, Roswell Park Cancer Institute
- Department of Pathology, University at Buffalo
| | | | | | - Jeff Woltz
- Department of Cancer Prevention and Population Science, Roswell Park Cancer Institute
| | | | | | - Wiam Bshara
- Department of Pathology, Roswell Park Cancer Institute
| | - Wendy Huss
- Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute
- Department of Urology, Roswell Park Cancer Institute
| | - James L. Mohler
- Department of Urology, Roswell Park Cancer Institute
- Department of Urology, University at Buffalo
| | - James R. Marshall
- Department of Cancer Prevention and Population Science, Roswell Park Cancer Institute
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14
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Brimo F, Aprikian A, Latour M, Têtu B, Doueik A, Scarlata E, Hamel L, McKercher G, Saad F, Lacombe L, Carmel M, Chevalier S. Strategies for biochemical and pathologic quality assurance in a large multi-institutional biorepository; The experience of the PROCURE Quebec Prostate Cancer Biobank. Biopreserv Biobank 2015; 11:285-90. [PMID: 24194978 DOI: 10.1089/bio.2013.0025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Well-characterized, high-quality fresh-frozen prostate tissue is required for prostate cancer research. As part of the PROCURE Prostate Cancer Biobank launched in 2007, four University Hospitals in Quebec joined to bank fresh frozen prostate tissues from radical prostatectomies (RP). As the biobank progressed towards allocation, the nature and quality of the tissues were determined. RP tissues were collected by standardized alternate mirror-image or biopsy-based targeted methods, and frozen for banking. Clinical/pathological parameters were captured. For quality control, two presumed benign and two presumed cancerous frozen, biobanked tissue blocks per case (10/site) were randomly selected during the five years of collection. In a consensus meeting, 4 pathologists blindly evaluated slides (n=160) and graded quality, Gleason score (GS), and size of cancer foci. The quality of tissue RNA (37/40 cases) was assessed using the RNA Integrity Number. The biobank included 1819 patients of mean age: 62.1 years; serum PSA: 8 ng/ml; prostate weight: 47.8 g; GS: 7; and pathological stage: T2 in 64.5%, T3A in 25.5% and T3B in 10% of cases. Of the 157 evaluable slides, 79 and 78 had benign and cancer tissue, respectively. GS for the 37 cancer-positive cases were: 6 in 9, 7 in 18 and >7 in 10 and, in most instances, in concordance with final GS. In 40% of slides containing cancer, foci occupied ≥50% of block surface and 42% had a diameter ≥1 cm. Tissue was well preserved and consistently yielded RNA of very good quality with RNA Integrity Number (RIN) >7 for 97% of cases (mean=8.7 ± 0.7) during the five-year collection period. This study confirms the high quality of randomly selected benign and cancerous fresh-frozen prostate tissues of the PROCURE Quebec Prostate Cancer Biobank. These results strengthen the uniqueness of this large prospective resource for prostate cancer research.
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15
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16
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Le Page C, Köbel M, de Ladurantaye M, Rahimi K, Madore J, Babinszky S, Bachvarov DR, Bachvarova M, Beauchamp MC, Cass CE, Chadwick D, Colleen C, Damaraju S, Dufour J, Gotlieb WH, Kalloger SE, Portelance L, McAlpine JN, Matte I, Piché A, Shaw P, Roehrl MHA, Vanderhyden BC, Watson PH, Huntsman DG, Provencher DM, Mes-Masson AM. Specimen quality evaluation in Canadian biobanks participating in the COEUR repository. Biopreserv Biobank 2014; 11:83-93. [PMID: 24845429 DOI: 10.1089/bio.2012.0044] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Human biological specimens are important for translational research programs such as the Canadian Ovarian Experimental Unified Resource (COEUR) funded by the Terry Fox Research Institute. Sample quality is an important consideration, as it directly impacts the quality of ensuing research. The aim of the present study was to determine the quality of tissues collected from different sites contributing to the COEUR cohort. Samples from high-grade serous ovarian tumors (fresh frozen and corresponding paraffin-embedded tissues) were provided by nine participating Canadian biobanks. All samples were shipped to a central site using a Standard Operating Protocol (SOP). DNA and RNA extraction was conducted by the quality control division of the Canadian Tumor Repository Network (CTRNet). DNA quality was determined by ß-globin gene PCR amplification, and RNA quality by the RNA integrity number (RIN), as measured by the Agilent BioAnalyzer. DNA of acceptable quality had at least three bands of ß-globin amplified from DNA (n=115/135), and a RIN number ≥7 was considered very good for RNA (n=80/135). Sample preparation and storage time had little effect on RNA or DNA quality. Protein expression was assessed on tissue microarray by immunohistochemistry with antibodies against p53, WT1, E-cadherin, CK-7, and Ki67 from formalin fixed-paraffin embedded (FFPE) tissues. As seen with a nonhierarchical clustering statistical method, there was no significant difference in immunostaining of paraffin tissues among specimens from different biobanks. Interestingly, patients with worse outcome were highly positive for p53 and weak for WT1. In conclusion, while there was no common SOP for retrospectively collected material across Canadian biobanks, these results indicate that specimens collected at these multiple sites are of comparable quality, and can serve as an adequate resource to create a national cohort for the validation of molecular biomarkers in ovarian cancer.
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Affiliation(s)
- Cécile Le Page
- 1 Centre Hospitalier de l'Université de Montréal , Montreal, Quebec
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17
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Darshan M, Zheng Q, Fedor HL, Wyhs N, Yegnasubramanian S, Lee P, Melamed J, Netto GJ, Trock BJ, De Marzo AM, Sfanos KS. Biobanking of derivatives from radical retropubic and robot-assisted laparoscopic prostatectomy tissues as part of the prostate cancer biorepository network. Prostate 2014; 74:61-9. [PMID: 24115205 PMCID: PMC4020427 DOI: 10.1002/pros.22730] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 08/27/2013] [Indexed: 01/22/2023]
Abstract
BACKGROUND The goal of the Prostate Cancer Biorepository Network (PCBN) is to develop a biorepository with high-quality, well-annotated specimens obtained in a systematic, reproducible fashion using optimized and standardized protocols, and an infrastructure to facilitate the growth of the resource and its wide usage by the prostate cancer research community. An emerging area of concern in the field of prostate cancer biobanking is an apparent shift in the proportion of surgical procedures performed for prostate cancer treatment from radical retropubic prostatectomy (RRP) to robot-assisted laparoscopic prostatectomy (RALP). Our study aimed to determine the potential impact of the RALP procedure on the detection of known prostate cancer biomarkers, and the subsequent suitability of RALP-derived specimens for prostate cancer biomarker studies. METHODS DNA and RNA were extracted from RRP and RALP specimens. Quality assessment was conducted using spectrophotometric analysis and RNA was analyzed for RNA integrity number (RIN) and by real-time reverse-transcription PCR (qRT-PCR) for racemase, hepsin, ERG, TMPRSS2-ERG gene fusions, and the microRNAs miR-26a, miR-26b, miR-141, and miR-221. RESULTS We demonstrate that extraction of derivatives from frozen tissues from RRP and RALP specimens yields samples of equally high quality as assessed by spectrophotometric and RIN analysis. Likewise, expression levels of genes analyzed by qRT-PCR did not differ between RRP and RALP-derived tissues. CONCLUSIONS Our studies indicate that samples obtained from RALP specimens may be suitable for prostate cancer biomarker studies-an important finding given the current shift in surgical procedures for prostate cancer treatment.
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Affiliation(s)
- Medha Darshan
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Qizhi Zheng
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Helen L. Fedor
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Nicolas Wyhs
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Peng Lee
- Department of Pathology, New York University School of Medicine, New York, New York
- Department of Urology, New York University School of Medicine, New York, New York
| | - Jonathan Melamed
- Department of Pathology, New York University School of Medicine, New York, New York
| | - George J. Netto
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Bruce J. Trock
- Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Correspondence to: Dr. Bruce J. Trock, Department of Urology, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 211, Baltimore, MD 21287.
| | - Angelo M. De Marzo
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Karen S. Sfanos
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Correspondence to: Dr. Karen S. Sfanos, Department of Pathology, Johns Hopkins University School of Medicine, 1550 Orleans Street, CRB II Rm. 1M43, Baltimore, MD 21231.
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18
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Effect of a Risk-stratified Grade of Nerve-sparing Technique on Early Return of Continence After Robot-assisted Laparoscopic Radical Prostatectomy. Eur Urol 2013; 63:438-44. [DOI: 10.1016/j.eururo.2012.07.009] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Accepted: 07/09/2012] [Indexed: 11/18/2022]
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19
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Functional outcomes following robotic prostatectomy using athermal, traction free risk-stratified grades of nerve sparing. World J Urol 2013; 31:471-80. [DOI: 10.1007/s00345-012-1018-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 12/20/2012] [Indexed: 11/25/2022] Open
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20
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Sagalovich D, Calaway A, Srivastava A, Sooriakumaran P, Tewari AK. Assessment of required nodal yield in a high risk cohort undergoing extended pelvic lymphadenectomy in robotic-assisted radical prostatectomy and its impact on functional outcomes. BJU Int 2012; 111:85-94. [DOI: 10.1111/j.1464-410x.2012.11351.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniel Sagalovich
- LeFrak Center of Robotic Surgery and Institute of Prostate Cancer; James Buchanan Brady Foundation Department of Urology; Weill Cornell Medical College; New York Presbyterian Hospital; New York; NY; USA
| | - Adam Calaway
- LeFrak Center of Robotic Surgery and Institute of Prostate Cancer; James Buchanan Brady Foundation Department of Urology; Weill Cornell Medical College; New York Presbyterian Hospital; New York; NY; USA
| | - Abhishek Srivastava
- LeFrak Center of Robotic Surgery and Institute of Prostate Cancer; James Buchanan Brady Foundation Department of Urology; Weill Cornell Medical College; New York Presbyterian Hospital; New York; NY; USA
| | - Prasanna Sooriakumaran
- LeFrak Center of Robotic Surgery and Institute of Prostate Cancer; James Buchanan Brady Foundation Department of Urology; Weill Cornell Medical College; New York Presbyterian Hospital; New York; NY; USA
| | - Ashutosh K. Tewari
- LeFrak Center of Robotic Surgery and Institute of Prostate Cancer; James Buchanan Brady Foundation Department of Urology; Weill Cornell Medical College; New York Presbyterian Hospital; New York; NY; USA
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21
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Tewari AK, Srivastava A, Huang MW, Robinson BD, Shevchuk MM, Durand M, Sooriakumaran P, Grover S, Yadav R, Mishra N, Mohan S, Brooks DC, Shaikh N, Khanna A, Leung R. Anatomical grades of nerve sparing: a risk-stratified approach to neural-hammock sparing during robot-assisted radical prostatectomy (RARP). BJU Int 2011; 108:984-92. [PMID: 21917101 DOI: 10.1111/j.1464-410x.2011.10565.x] [Citation(s) in RCA: 145] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES • To report the potency and oncological outcomes of patients undergoing robot-assisted radical prostatectomy (RARP) using a risk-stratified approach based on layers of periprostatic fascial dissection. • We also describe the surgical technique of complete hammock preservation or nerve sparing grade 1. PATIENTS AND METHODS • This is a retrospective study of 2317 patients who had robotic prostatectomy by a single surgeon at a single institution between January 2005 and June 2010. • Included patients were those with ≥ 1 year of follow-up and who were potent preoperatively, defined as having a sexual health inventory for men (SHIM) questionnaire score of >21; thus, the final number of patients in the study cohort was 1263. • Patients were categorized pre-operatively by a risk-stratified approach into risk grades 1-4, where risk grade 1 patients received nerve-sparing grade 1 or complete hammock preservation and so on for risk grades 2-4, as long as intraoperative findings permitted the planned nerve sparing. • We considered return to sexual function post-operatively by two criteria: i) ability to have successful intercourse (score of ≥ 4 on question 2 of the SHIM) and ii) SHIM >21 or return to baseline sexual function. RESULTS • There was a significant difference across different NS grades in terms of the percentages of patients who had intercourse and returned to baseline sexual function (P < 0.001), with those that underwent NS grade 1 having the highest rates (90.9% and 81.7%) as compared to NS grades 2 (81.4% and 74.3%), 3 (73.5% and 66.1%), and 4 (62% and 54.5%). • The overall positive surgical margin (PSM) rates for patients with NS grades 1, 2, 3, and 4 were 9.9%, 8.1%, 7.2%, and 8.7%, respectively (P = 0.636). • The extraprostatic extension rates were 11.6%, 14.3%, 29.3%, and 36.2%, respectively (P < 0.001). • Similarly, in patients younger than 60, intercourse and return to baseline sexual function rates were 94.9% and 84.3% for NS grade 1 as compared to 85.5% and 77.2% for NS grades 2, 76.9% and 69% for NS grades 3, and 64.8% and 57.7% for NS Grade 4 (P < 0.001). CONCLUSIONS • The risk-stratified approach and anatomical technique of neural-hammock sparing described in the present manuscript was effective in improving potency outcomes of patients without compromising cancer control. • Patients with greater degrees of NS had higher rates of intercourse and return to baseline sexual function without an increase in PSM rates.
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Affiliation(s)
- Ashutosh K Tewari
- LeFrak Institute of Robotic Surgery and Prostate Cancer Institute, James Buchanan Brady Foundation Department of Urology, Weill Medical College of Cornell University, New York, NY 10065, USA.
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