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Małkiewicz B, Kiełb P, Kobylański M, Karwacki J, Poterek A, Krajewski W, Zdrojowy R, Szydełko T. Sentinel Lymph Node Techniques in Urologic Oncology: Current Knowledge and Application. Cancers (Basel) 2023; 15:cancers15092495. [PMID: 37173960 PMCID: PMC10177100 DOI: 10.3390/cancers15092495] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Lymph node (LN) metastases have a significant negative impact on the prognosis of urological malignancies. Unfortunately, current imaging modalities are insufficient when it comes to detecting micrometastases; thus, surgical LN removal is commonly used. However, there is still no established ideal lymph node dissection (LND) template, leading to unnecessary invasive staging and the possibility of missing LN metastases located outside the standard template. To address this issue, the sentinel lymph node (SLN) concept has been proposed. This technique involves identifying and removing the first group of draining LNs, which can accurately stage cancer. While successful in breast cancer and melanoma, the SLN technique in urologic oncology is still considered experimental due to high false-negative rates and lack of data in prostate, bladder, and kidney cancer. Nevertheless, the development of new tracers, imaging modalities, and surgical techniques may improve the potential of the SLN procedures in urological oncology. In this review, we aim to discuss the current knowledge and future contributions of the SLN procedure in the management of urological malignancies.
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Affiliation(s)
- Bartosz Małkiewicz
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Paweł Kiełb
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Maximilian Kobylański
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Jakub Karwacki
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Adrian Poterek
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Wojciech Krajewski
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Romuald Zdrojowy
- University Center of Excellence in Urology, Department of Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Tomasz Szydełko
- University Center of Excellence in Urology, Department of Minimally Invasive and Robotic Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland
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Chiral phosphoric acid-catalyzed enantioselective phosphinylation of 3,4-dihydroisoquinolines with diarylphosphine oxides. Commun Chem 2023; 6:26. [PMID: 36759563 PMCID: PMC9911717 DOI: 10.1038/s42004-023-00826-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/31/2023] [Indexed: 02/11/2023] Open
Abstract
Chiral phosphorous-containing compounds are playing a more and more significant role in several different research fields. Here, we show a chiral phosphoric acid-catalyzed enantioselective phosphinylation of 3,4-dihydroisoquinolines with diarylphosphine oxides for the efficient and practical construction of a family of chiral α-amino diarylphosphine oxides with a diverse range of functional groups. The phosphine products are suitable for transforming to several kinds of chiral (thio)ureas, which might be employed as chiral ligands or catalysts with potential applications in asymmetric catalysis. Control and NMR tracking experiments show that the reaction proceeds via the tert-butyl 1-(tert-butoxy)-3,4-dihydroiso-quinoline-2(1H)-carboxylate intermediate, followed by C-P bond formation. Furthermore, computational studies elucidated that the hydrogen bonding strength between the phosphonate and isoquinolinium determines the stereoselectivity of the phosphinylation reaction.
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Yu H, Yang H, Shi E, Tang W. Development and Clinical Application of Phosphorus-Containing Drugs. MEDICINE IN DRUG DISCOVERY 2020; 8:100063. [PMID: 32864606 PMCID: PMC7445155 DOI: 10.1016/j.medidd.2020.100063] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 12/20/2022] Open
Abstract
Phosphorus-containing drugs belong to an important class of therapeutic agents and are widely applied in daily clinical practices. Structurally, the phosphorus-containing drugs can be classified into phosphotriesters, phosphonates, phosphinates, phosphine oxides, phosphoric amides, bisphosphonates, phosphoric anhydrides, and others; functionally, they are often designed as prodrugs with improved selectivity and bioavailability, reduced side effects and toxicity, or biomolecule analogues with endogenous materials and antagonistic endoenzyme supplements. This review summarized the phosphorus-containing drugs currently on the market as well as a few promising molecules at clinical studies, with particular emphasis on their structural features, biological mechanism, and indications.
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Affiliation(s)
- Hanxiao Yu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - He Yang
- Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China,Corresponding authors
| | - Enxue Shi
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China,Corresponding authors
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China,School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China,Correspondence to: W. Tang, State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
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MRI-guided, transrectal, intraprostatic steam application as potential focal therapeutic modality for prostatic diseases in a large animal translational model: A feasibility follow-up study. PLoS One 2019; 14:e0226764. [PMID: 31869376 PMCID: PMC6927626 DOI: 10.1371/journal.pone.0226764] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 12/03/2019] [Indexed: 12/02/2022] Open
Abstract
Parallel to establishment of diagnostic surveillance protocols for detection of prostatic diseases, novel treatment strategies should be developed. The aim of the present study is to evaluate the feasibility and possible side effects of transrectal, MRI-targeted intraprostatic steam application in dogs as an established large animal translational model for prostatic diseases in humans. Twelve healthy experimental, intact, male beagle dogs without evidence of prostatic pathology were recruited. An initial MRI examination was performed, and MRI-targeted steam was applied intraprostatically immediately thereafter. Serum levels of C-reactive protein (CRP), clinical and ultrasonographic examinations were performed periodically following the procedure to assess treatment effect. Four weeks after treatment, all dogs underwent follow-up MRI examinations and three needle-core biopsies were obtained from each prostatic lobe. Descriptive statistics were performed. MRI-guided intraprostatic steam application was successfully performed in the study population. The first day after steam application, 7/12 dogs had minimal signs of discomfort (grade 1/24 evaluated with the short-form Glasgow Composite Measure Pain Scale) and no dogs showed any sign of discomfort by day 6. CRP elevations were detected in 9/12 dogs during the first week post steam application. Mild to moderate T2 hyperintense intraparenchymal lesions were identified during follow-up MRI in 11/12 dogs four weeks post procedure. Ten of these lesions enhanced mild to moderately after contrast administration. Coagulative necrosis or associated chronic inflammatory response was detected in 80.6% (58/72) of the samples obtained. MRI-targeted intraprostatic steam application is a feasible technique and displays minimal side effects in healthy dogs as translational model for human prostatic diseases. This opens the possibility of minimally invasive novel treatment strategies for intraprostatic lesions.
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Winter A, Kowald T, Paulo TS, Goos P, Engels S, Gerullis H, Schiffmann J, Chavan A, Wawroschek F. Magnetic resonance sentinel lymph node imaging and magnetometer-guided intraoperative detection in prostate cancer using superparamagnetic iron oxide nanoparticles. Int J Nanomedicine 2018; 13:6689-6698. [PMID: 30425483 PMCID: PMC6204856 DOI: 10.2147/ijn.s173182] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Purpose Sentinel lymph node (LN) dissection (sLND) using a magnetometer and superpara-magnetic iron oxide nanoparticles (SPION) as a tracer was successfully applied in prostate cancer (PCa). The feasibility of sentinel LN (SLN) visualization on MRI after intraprostatic SPION injection has been reported. In the present study, results of preoperative MRI identification of SLNs and the outcome of subsequent intraoperative magnetometer-guided sLND following intraprostatic SPION injection were studied in intermediate- and high-risk PCa. Patients and methods A total of 50 intermediate- and high-risk PCa patients (prostate-specific antigen >10 ng/mL and/or Gleason score ≥7) scheduled for radical prostatectomy with magnetometer-guided sLND and extended pelvic LND (eLND), were included. Patients underwent MRI before and one day after intraprostatic SPION injection using T1-, T2-, and T2*-weighted sequences. Diagnostic rate per patient was established. Distribution of SLNs per anatomic region was registered. Diagnostic accuracy of sLND was assessed by using eLND as a reference standard. Results SPION-MRI identified a total of 890 SLNs (median 17.5; IQR 12–22.5). SLNs could be successfully detected using MRI in all patients (diagnostic rate 100%). Anatomic SLN distribution: external iliac 19.2%, common iliac 16.6%, fossa obturatoria 15.8%, internal iliac 13.8%, presacral 12.1%, perirectal 12.0%, periprostatic 3.7%, perivesical 2.3%, and other regions 4.4%. LN metastases were intraoperatively found in 15 of 50 patients (30%). sLND had a 100% diagnostic rate, 85.7% sensitivity, 97.2% specificity, 92.3% positive predictive value, 94.9% negative predictive value, false negative rate 14.3%, and 2.8% additional diagnostic value (LN metastases only outside the eLND template). Conclusion MR scintigraphy after intraprostatic SPION injection provides a roadmap for intraoperative magnetometer-guided SLN detection and can be useful to characterize a reliable lymphadenectomy template. Draining LN from the prostate can be identified in an unexpectedly high number, especially outside the established eLND template. Further studies are required to analyze discordance between the number of pre- and intraoperatively identified SLNs.
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Affiliation(s)
- Alexander Winter
- University Hospital for Urology, Klinikum Oldenburg, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany,
| | - Tobias Kowald
- Institute of Diagnostic and Interventional Radiology, Klinikum Oldenburg, Oldenburg, Germany
| | - Tina Susanne Paulo
- Institute of Diagnostic and Interventional Radiology, Klinikum Oldenburg, Oldenburg, Germany
| | - Philipp Goos
- University Hospital for Urology, Klinikum Oldenburg, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany,
| | - Svenja Engels
- University Hospital for Urology, Klinikum Oldenburg, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany,
| | - Holger Gerullis
- University Hospital for Urology, Klinikum Oldenburg, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany,
| | - Jonas Schiffmann
- University Hospital for Urology, Klinikum Oldenburg, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany,
| | - Ajay Chavan
- Institute of Diagnostic and Interventional Radiology, Klinikum Oldenburg, Oldenburg, Germany
| | - Friedhelm Wawroschek
- University Hospital for Urology, Klinikum Oldenburg, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany,
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Beer P, Pozzi A, Rohrer Bley C, Bacon N, Pfammatter NS, Venzin C. The role of sentinel lymph node mapping in small animal veterinary medicine: A comparison with current approaches in human medicine. Vet Comp Oncol 2017; 16:178-187. [DOI: 10.1111/vco.12372] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 10/17/2017] [Indexed: 12/20/2022]
Affiliation(s)
- P. Beer
- Clinic for Small Animal Surgery, Vetsuisse Faculty; University of Zurich; Zurich Switzerland
| | - A. Pozzi
- Clinic for Small Animal Surgery, Vetsuisse Faculty; University of Zurich; Zurich Switzerland
| | - C. Rohrer Bley
- Division of Radiation Oncology, Vetsuisse Faculty; University of Zurich; Zurich Switzerland
| | - N. Bacon
- Fitzpatrick Referrals Oncology and Soft Tissue; Guildford Hospital; Guildford UK
| | - N. S. Pfammatter
- Clinic for Diagnostic Imaging, Vetsuisse Faculty; University of Zurich; Zurich Switzerland
| | - C. Venzin
- Clinic for Small Animal Surgery, Vetsuisse Faculty; University of Zurich; Zurich Switzerland
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van der Poel HG, Meershoek P, Grivas N, KleinJan G, van Leeuwen FWB, Horenblas S. Sentinel node biopsy and lymphatic mapping in penile and prostate cancer. Urologe A 2017; 56:13-17. [PMID: 27853841 DOI: 10.1007/s00120-016-0270-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Nodal metastases are linked to poor outcome in men with penile or prostate cancer. Early detection and resection are important for staging and for the prognosis. However, lymphadenectomy is associated with morbidity and may miss metastases when performed solely on the basis of anatomical templates. METHODS In this article we describe the technique and benefits of sentinel node biopsy (SNB) and provide a review of the literature. RESULTS Dynamic sentinel node techniques using both radioactive and optical (hybrid) tracers have been proven effective in penile cancer. For prostate cancer, SNB added to extended nodal dissection may further tailor dissection to the highly variable lymphatic drainage patterns in the pelvis. The sensitivity of SNB was found to be superior to conventional imaging methods; however, false-negative SNB procedures can occur and a complementary extensive lymphadenectomy is required to remove additional positive nodes that were not detected in the SNB template. CONCLUSION SNB is a standard method for early detection of nodal metastases in penile cancer and provides superior diagnostic accuracy to conventional imaging modalities in prostate cancer.
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Affiliation(s)
- H G van der Poel
- Department of Urology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands.
| | - P Meershoek
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - N Grivas
- Department of Urology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - G KleinJan
- Department of Urology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - F W B van Leeuwen
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - S Horenblas
- Department of Urology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
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Sentinel Lymph Node Biopsy in Pelvic Tumors: Clinical Indications and Protocols Under Investigation. Clin Nucl Med 2017; 41:e288-93. [PMID: 26914577 DOI: 10.1097/rlu.0000000000001184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Sentinel lymph node (SLN) sampling is an attractive alternative to complete lymphadenectomy. Based on the identification and sampling of the first LN draining a primary tumor, SLN biopsy is the most accurate and the only reliable method for microscopic nodal staging for solid tumors including breast cancer and melanoma. Lymph node status in pelvic tumors remains the most important prognostic factor for recurrence and survival and a major decision criterion for adjuvant therapy. We review the clinical indications, controversies, and perspective of SLN biopsy in male and female pelvic cancers.
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Sankineni S, Smedley J, Bernardo M, Brown AM, Johnson L, Muller B, Griffiths GL, Kobayashi H, Rais-Bahrami S, Pinto PA, Wood BJ, Keele B, Choyke PL, Turkbey B. Ferumoxytol as an intraprostatic MR contrast agent for lymph node mapping of the prostate: a feasibility study in non-human primates. Acta Radiol 2016; 57:1396-1401. [PMID: 26013022 PMCID: PMC6301061 DOI: 10.1177/0284185115586023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background A variety of magnetic resonance (MR) lymphographic agents have been proposed for mapping the lymph nodes draining the prostate. Purpose To investigate the feasibility of using ferumoxytol (an FDA-approved iron oxide agent) for lymph node mapping of the prostate on imaging (MRI) in a non-human primate (NHP) Macaque model. Material and Methods Four NHPs weighing 5-13 kg underwent injection of ferumoxytol after a needle was introduced transrectally under MRI guidance into the prostate using a commercially available intrarectal MRI biopsy guide. Ferumoxytol was administered at dosage in the range of 0.15-0.75 mg Fe/kg in a fixed injection volume of 0.2 mL. T1-weighted MRI was performed at 3 T starting immediately and extending at least 45 min post-injection. Two readers evaluated the images in consensus. The NHPs tolerated the ferumoxytol injections at all doses with no evident side effects. Results It was determined that the lowest dose of 0.15 mg Fe/kg produced the best outcome in terms of lymph node visualization and draining nodes were reliably visualized at this dose and volume. Conclusion Thus, MRI with intraprostatic injection of ferumoxytol may be considered an effective T1 contrast agent for prospective mapping of lymph nodes draining the prostate and, thus, for attempted sentinel lymph node identification in prostate cancer. Large clinical trials to determine safety and efficacy are needed.
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Affiliation(s)
- Sandeep Sankineni
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jeremy Smedley
- Washington National Primate Research Center, UW, Seattle, WA, USA
| | - Marcelino Bernardo
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Anna M Brown
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Linda Johnson
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Berrend Muller
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Department of Urology, AMC University Hospital, Amsterdam, the Netherlands
- Urologic Oncology Branch, NCI, NIH, Bethesda, MD, USA
| | - Gary L Griffiths
- Clinical Research Directorate/CMRP, Leidos Biomedical Research, Inc. (formerly SAIC-Frederick, Inc.), Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Hisataka Kobayashi
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Soroush Rais-Bahrami
- Urologic Oncology Branch, NCI, NIH, Bethesda, MD, USA
- Department of Urology, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Peter A Pinto
- Urologic Oncology Branch, NCI, NIH, Bethesda, MD, USA
- Center for Interventional Oncology, NCI and Radiology and Imaging Sciences, Clinical Center, NIH, Bethesda, MD, USA
| | - Bradford J Wood
- Center for Interventional Oncology, NCI and Radiology and Imaging Sciences, Clinical Center, NIH, Bethesda, MD, USA
| | - Brandon Keele
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc. (formerly SAIC-Frederick, Inc.), Frederick National Laboratory, Frederick, MD, USA
| | - Peter L Choyke
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Baris Turkbey
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Brouwer OR, van der Poel HG, Bevers RF, van Gennep EJ, Horenblas S. Beyond penile cancer, is there a role for sentinel node biopsy in urological malignancies? Clin Transl Imaging 2016; 4:395-410. [PMID: 27738628 PMCID: PMC5037151 DOI: 10.1007/s40336-016-0189-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 05/30/2016] [Indexed: 11/30/2022]
Abstract
This review aims to discuss the current state-of-the-art of sentinel node (SN) mapping in urological malignancies. The principles and methodological aspects of lymphatic mapping and SN biopsy in urological malignancies are reviewed. Literature search was restricted to English language. The references of the retrieved articles were examined to identify additional articles. The review also includes meta-analyses published in the past 5 years. SN biopsy for penile cancer is recommended by the European Association of Urology as the preferred staging tool for clinically node-negative patients with at least T1G2 tumours (level of evidence 2a, Grade B). The feasibility of SN biopsy in prostate cancer has been repeatedly demonstrated and its potential value is increasingly being recognised. However, conclusive prospective clinical data as well as consensus on methodology and patient selection are still lacking. For bladder, renal and testicular cancer, only few studies have been published, and concerns around high false-negative rates remain. Throughout the years, the uro-oncological field has portrayed a pivotal role in the development of the SN concept. Recent advances such as hybrid tracers and novel intraoperative detection tools such as fluorescence and portable gamma imaging will hopefully encourage prospectively designed clinical trials which can further substantiate the potential of the SN approach in becoming an integral part of staging in urological malignancies beyond penile cancer.
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Affiliation(s)
- O R Brouwer
- Department of Urologyand Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands ; Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - H G van der Poel
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - R F Bevers
- Department of Urologyand Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - E J van Gennep
- Department of Urologyand Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - S Horenblas
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
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Cai X, Liu X, Liao LD, Bandla A, Ling JM, Liu YH, Thakor N, Bazan GC, Liu B. Encapsulated Conjugated Oligomer Nanoparticles for Real-Time Photoacoustic Sentinel Lymph Node Imaging and Targeted Photothermal Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4873-4880. [PMID: 27439884 DOI: 10.1002/smll.201600697] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/18/2016] [Indexed: 06/06/2023]
Abstract
Noninvasive and nonionizing imaging of sentinel lymph nodes (SLN) is highly desirable for the detection of breast cancer metastasis through sentinel lymph node biopsy. Photoacoustic (PA) imaging is an emerging imaging technique that can serve as a suitable approach for SLN imaging. Herein, novel conjugated oligomer based nanoparticles (NPs) with strong NIR absorption, good biocompatibility, excellent PA contrast, and good photothermal conversion efficiency are reported. Real-time PA imaging of SLN reveals high resolution of the NPs via injection from the left forepaw pad. In addition, the surface functionalized NPs can target breast cancer cells and kill them efficiently and specifically through photothermal therapy upon 808 nm laser irradiation. This work shows great potential of the nanoparticle PA contrast agent to serve as a multifunctional probe for photothermal therapy at SLNs to achieve the inhibition of cancer cell metastasis in the near future.
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Affiliation(s)
- Xiaolei Cai
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, 28 Medical Drive, #05-01, Singapore, 117456, Singapore
| | - Xiaofeng Liu
- Department of Chemistry and Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA, 93107, USA
| | - Lun-De Liao
- Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, #05-COR, Singapore, 117456, Singapore
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County, 35053, Taiwan
| | - Aishwarya Bandla
- Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, #05-COR, Singapore, 117456, Singapore
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077, Singapore
| | - Ji Min Ling
- Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, #05-COR, Singapore, 117456, Singapore
- National Neuroscience Institute (NNI), 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore
| | - Yu-Hang Liu
- Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, #05-COR, Singapore, 117456, Singapore
- Department of Electrical and Computer Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077, Singapore
| | - Nitish Thakor
- Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, #05-COR, Singapore, 117456, Singapore
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077, Singapore
- Department of Electrical and Computer Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077, Singapore
| | - Guillermo C Bazan
- Department of Chemistry and Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA, 93107, USA.
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
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Acar C, Kleinjan GH, van den Berg NS, Wit EMK, van Leeuwen FWB, van der Poel HG. Advances in sentinel node dissection in prostate cancer from a technical perspective. Int J Urol 2015; 22:898-909. [DOI: 10.1111/iju.12863] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 06/07/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Cenk Acar
- Department of Urology; Acibadem University School of Medicine; Istanbul Turkey
| | - Gijs H Kleinjan
- Interventional Molecular Imaging Laboratory; Department of Radiology; Leiden University Medical Centre; Leiden the Netherlands
- Department of Nuclear Medicine; The Netherlands Cancer Institute; Antoni van Leeuwenhoek Hospital; Amsterdam the Netherlands
| | - Nynke S van den Berg
- Interventional Molecular Imaging Laboratory; Department of Radiology; Leiden University Medical Centre; Leiden the Netherlands
- Department of Urology; The Netherlands Cancer Institute; Antoni van Leeuwenhoek Hospital; Amsterdam the Netherlands
| | - Esther MK Wit
- Department of Urology; The Netherlands Cancer Institute; Antoni van Leeuwenhoek Hospital; Amsterdam the Netherlands
| | - Fijs WB van Leeuwen
- Interventional Molecular Imaging Laboratory; Department of Radiology; Leiden University Medical Centre; Leiden the Netherlands
- Department of Urology; The Netherlands Cancer Institute; Antoni van Leeuwenhoek Hospital; Amsterdam the Netherlands
| | - Henk G van der Poel
- Department of Urology; The Netherlands Cancer Institute; Antoni van Leeuwenhoek Hospital; Amsterdam the Netherlands
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Rosenkrantz AB, Taneja SS. Magnetic resonance sentinel lymph node detection in prostate cancer: a new solution to a longstanding problem? Acad Radiol 2015; 22:545-7. [PMID: 25797301 DOI: 10.1016/j.acra.2015.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 02/25/2015] [Accepted: 02/25/2015] [Indexed: 11/18/2022]
Affiliation(s)
- Andrew B Rosenkrantz
- Department of Radiology, NYU Langone Medical Center, 660 First Avenue, New York, NY 10016.
| | - Samir S Taneja
- Division of Urologic Oncology, Department of Urology, NYU Langone Medical Center, New York, New York
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