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Thulborn KR, Lu A, Atkinson IC, Pauliah M, Beal K, Chan TA, Omuro A, Yamada J, Bradbury MS. Residual Tumor Volume, Cell Volume Fraction, and Tumor Cell Kill During Fractionated Chemoradiation Therapy of Human Glioblastoma using Quantitative Sodium MR Imaging. Clin Cancer Res 2018; 25:1226-1232. [PMID: 30487127 DOI: 10.1158/1078-0432.ccr-18-2079] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 10/04/2018] [Accepted: 11/16/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE Spatial and temporal patterns of response of human glioblastoma to fractionated chemoradiation are described by changes in the bioscales of residual tumor volume (RTV), tumor cell volume fraction (CVF), and tumor cell kill (TCK), as derived from tissue sodium concentration (TSC) measured by quantitative sodium MRI at 3 Tesla. These near real-time patterns during treatment are compared with overall survival. EXPERIMENTAL DESIGN Bioscales were mapped during fractionated chemoradiation therapy in patients with glioblastomas (n = 20) using TSC obtained from serial quantitative sodium MRI at 3 Tesla and a two-compartment model of tissue sodium distribution. The responses of these parameters in newly diagnosed human glioblastomas undergoing treatment were compared with time-to-disease progression and survival. RESULTS RTV following tumor resection showed decreased CVF due to disruption of normal cell packing by edema and infiltrating tumor cells. CVF showed either increases back toward normal as infiltrating tumor cells were killed, or decreases as cancer cells continued to infiltrate and extend tumor margins. These highly variable tumor responses showed no correlation with time-to-progression or overall survival. CONCLUSIONS These bioscales indicate that fractionated chemoradiotherapy of glioblastomas produces variable responses with low cell killing efficiency. These parameters are sensitive to real-time changes within the treatment volume while remaining stable elsewhere, highlighting the potential to individualize therapy earlier in management, should alternative strategies be available.
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Affiliation(s)
- Keith R Thulborn
- Center for Magnetic Resonance Research, University of Illinois at Chicago, Chicago, Illinois.
| | - Aiming Lu
- Center for Magnetic Resonance Research, University of Illinois at Chicago, Chicago, Illinois
| | - Ian C Atkinson
- Center for Magnetic Resonance Research, University of Illinois at Chicago, Chicago, Illinois
| | - Mohan Pauliah
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kathryn Beal
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Timothy A Chan
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Antonio Omuro
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Josh Yamada
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Michelle S Bradbury
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York.,Molecular Pharmacology Program, Sloan Kettering Institute for Cancer Research, New York, New York
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Chen F, Zhang X, Ma K, Madajewski B, Benezra M, Zhang L, Phillips E, Turker MZ, Gallazzi F, Penate-Medina O, Overholtzer M, Pauliah M, Gonen M, Zanzonico P, Wiesner U, Bradbury MS, Quinn TP. Correction to Melanocortin-1 Receptor-Targeting Ultrasmall Silica Nanoparticles for Dual-Modality Human Melanoma Imaging. ACS Appl Mater Interfaces 2018; 10:36584. [PMID: 30360123 DOI: 10.1021/acsami.8b16671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Chen F, Zhang X, Ma K, Madajewski B, Benezra M, Zhang L, Phillips E, Turker MZ, Gallazzi F, Penate-Medina O, Overholtzer M, Pauliah M, Gonen M, Zanzonico P, Wiesner U, Bradbury MS, Quinn TP. Melanocortin-1 Receptor-Targeting Ultrasmall Silica Nanoparticles for Dual-Modality Human Melanoma Imaging. ACS Appl Mater Interfaces 2018; 10:4379-4393. [PMID: 29058865 PMCID: PMC5803308 DOI: 10.1021/acsami.7b14362] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The poor prognosis associated with malignant melanoma has not changed substantially over the past 30 years. Targeted molecular therapies, such as immunotherapy, have shown promise but suffer from resistance and off-target toxicities, underscoring the need for alternative therapeutic strategies that can be used in combination with existing protocols. Moreover, peptides targeting melanoma-specific markers, like the melanocortin-1 receptor (MC1-R), for imaging and therapy exhibit high renal uptake that limits clinical translation. In the current study, the application of ultrasmall fluorescent (Cy5) silica nanoparticles (C' dots), conjugated with MC1-R targeting alpha melanocyte stimulating hormone (αMSH) peptides on the polyethylene glycol (PEG) coated surface, is examined for melanoma-selective imaging. αMSH peptide sequences, evaluated for conjugation to the PEG-Cy5-C' dot nanoparticles, bound to MC1-R with high affinity and targeted melanoma in syngenetic and xenografted melanoma mouse models. Results demonstrated a 10-fold improvement in MC1-R affinity over the native peptide alone following surface attachment of the optimal αMSH peptide. Systematic in vivo studies further demonstrated favorable in vivo renal clearance kinetics as well as receptor-mediated tumor cell internalization of as-developed radiolabeled particle tracers in B16F10 melanoma bearing mice. These findings highlight the ability of αMSH-PEG-Cy5-C' dots to overcome previous hurdles that prevented clinical translation of peptide and antibody-based melanoma probes and reveal the potential of αMSH-PEG-Cy5-C' dots for melanoma-selective imaging, image-guided surgery, and therapeutic applications.
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Affiliation(s)
| | - Xiuli Zhang
- Department of Biochemistry, University of Missouri , Columbia, Missouri 65211, United States
- Harry S. Truman Veterans' Hospital , Columbia, Missouri 65201, United States
| | - Kai Ma
- Department of Materials Science & Engineering, Cornell University , Ithaca, New York 14853, United States
| | | | | | | | | | - Melik Z Turker
- Department of Materials Science & Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Fabio Gallazzi
- Department of Biochemistry, University of Missouri , Columbia, Missouri 65211, United States
- Harry S. Truman Veterans' Hospital , Columbia, Missouri 65201, United States
| | | | - Michael Overholtzer
- BCMB Allied Program, Weill Cornell Medical College , New York, New York 10065, United States
| | | | | | | | - Ulrich Wiesner
- Department of Materials Science & Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Michelle S Bradbury
- Molecular Pharmacology Program, Sloan Kettering Institute for Cancer Research , New York, New York 10065, United States
| | - Thomas P Quinn
- Department of Biochemistry, University of Missouri , Columbia, Missouri 65211, United States
- Harry S. Truman Veterans' Hospital , Columbia, Missouri 65201, United States
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Chen F, Ma K, Benezra M, Zhang L, Cheal SM, Phillips E, Yoo B, Pauliah M, Overholtzer M, Zanzonico P, Sequeira S, Gonen M, Quinn T, Wiesner U, Bradbury MS. Cancer-Targeting Ultrasmall Silica Nanoparticles for Clinical Translation: Physicochemical Structure and Biological Property Correlations. Chem Mater 2017; 29:8766-8779. [PMID: 29129959 PMCID: PMC5679295 DOI: 10.1021/acs.chemmater.7b03033] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Although a large body of literature exists on the potential use of nanoparticles for medical applications, the number of probes translated into human clinical trials is remarkably small. A major challenge of particle probe development and their translation is the elucidation of safety profiles associated with their structural complexity, not only in terms of size distribution and heterogeneities in particle composition but also their effects on biological activities and the relationship between particle structure and pharmacokinetics. Here, we report on the synthesis, characterization, and long-term stability of ultrasmall (<10 nm diameter) dual-modality (optical and positron emission tomography) and integrintargeting silica nanoparticles (cRGDY-PEG-Cy5-C' dots and 124I-(or 131I-) cRGDY-PEG-Cy5-C'dots) and the extent to which their surface ligand density differentially modulates key in vitro and in vivo biological activities in melanoma models over a range of ligand numbers (i.e., ~6-18). Gel permeation chromatography, established as an important particle characterization tool, revealed a two-year shelf life for cRGDY-PEG-Cy5-C' dots. Radiochromatography further demonstrated the necessary radiochemical stability for clinical applications. The results of subsequent ligand density-dependent studies elucidate strong modulations in biological response, including statistically significant increases in integrin-specific targeting and particle uptake, cellular migration and adhesion, renal clearance, and tumor-to-blood ratios with increasing ligand number. We anticipate that nanoprobe characteristics and a better understanding of the structure-function relationships determined in this study will help guide identification of other lead nanoparticle candidates for in vitro and in vivo biological assessments and product translation.
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Affiliation(s)
- Feng Chen
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Kai Ma
- Department of Materials Science & Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Miriam Benezra
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Li Zhang
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Sarah M. Cheal
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Evan Phillips
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Barney Yoo
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Mohan Pauliah
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Michael Overholtzer
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
- BCMB Allied Program, Weill Cornell Medical College, New York, New York 10065, United States
| | - Pat Zanzonico
- Department of Medical Physics, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Sonia Sequeira
- Investigational Products Core, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Mithat Gonen
- Department of Epidemiology and Biostatistics, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
| | - Thomas Quinn
- Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Ulrich Wiesner
- Department of Materials Science & Engineering, Cornell University, Ithaca, New York 14853, United States
- Corresponding Authors. .
| | - Michelle S. Bradbury
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
- Molecular Pharmacology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, United States
- Corresponding Authors. .
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Zanganeh S, Spitler R, Hutter G, Ho JQ, Pauliah M, Mahmoudi M. Tumor-associated macrophages, nanomedicine and imaging: the axis of success in the future of cancer immunotherapy. Immunotherapy 2017; 9:819-835. [DOI: 10.2217/imt-2017-0041] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The success of any given cancer immunotherapy relies on several key factors. In particular, success hinges on the ability to stimulate the immune system in a controlled and precise fashion, select the best treatment options and appropriate therapeutic agents, and use highly effective tools to accurately and efficiently assess the outcome of the immunotherapeutic intervention. Furthermore, a deep understanding and effective utilization of tumor-associated macrophages (TAMs), nanomedicine and biomedical imaging must be harmonized to improve treatment efficacy. Additionally, a keen appreciation of the dynamic interplay that occurs between immune cells and the tumor microenvironment (TME) is also essential. New advances toward the modulation of the immune TME have led to many novel translational research approaches focusing on the targeting of TAMs, enhanced drug and nucleic acid delivery, and the development of theranostic probes and nanoparticles for clinical trials. In this review, we discuss the key cogitations that influence TME, TAM modulations and immunotherapy in solid tumors as well as the methods and resources of tracking the tumor response. The vast array of current nanomedicine technologies can be readily modified to modulate immune function, target specific cell types, deliver therapeutic payloads and be monitored using several different imaging modalities. This allows for the development of more effective treatments, which can be specifically designed for particular types of cancer or on an individual basis. Our current capacities have allowed for greater use of theranostic probes and multimodal imaging strategies that have led to better image contrast, real-time imaging capabilities leveraging targeting moieties, tracer kinetics and enabling more detailed response profiles at the cellular and molecular levels. These novel capabilities along with new discoveries in cancer biology should drive innovation for improved biomarkers for efficient and individualized cancer therapy.
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Affiliation(s)
- Saeid Zanganeh
- Department of Radiology, Memorial Sloan Kettering, New York, NY 10065, USA
| | - Ryan Spitler
- Department of Radiology, Stanford University, Stanford, CA 94305, USA
| | - Gregor Hutter
- Department of Neurosurgery, Stanford University, Stanford, CA 94304, USA
| | - Jim Q Ho
- Department of Biology, Middlebury College, Middlebury, VT 05753, USA
| | - Mohan Pauliah
- Department of Radiology, Memorial Sloan Kettering, New York, NY 10065, USA
| | - Morteza Mahmoudi
- Department of Nanotechnology, Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 14155–6451, Iran
- Department of Anesthesiology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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Kim SE, Zhang L, Ma K, Riegman M, Chen F, Ingold I, Conrad M, Turker MZ, Gao M, Jiang X, Monette S, Pauliah M, Gonen M, Zanzonico P, Quinn T, Wiesner U, Bradbury MS, Overholtzer M. Ultrasmall nanoparticles induce ferroptosis in nutrient-deprived cancer cells and suppress tumour growth. Nat Nanotechnol 2016; 11:977-985. [PMID: 27668796 PMCID: PMC5108575 DOI: 10.1038/nnano.2016.164] [Citation(s) in RCA: 392] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 08/05/2016] [Indexed: 04/14/2023]
Abstract
The design of cancer-targeting particles with precisely tuned physicochemical properties may enhance the delivery of therapeutics and access to pharmacological targets. However, a molecular-level understanding of the interactions driving the fate of nanomedicine in biological systems remains elusive. Here, we show that ultrasmall (<10 nm in diameter) poly(ethylene glycol)-coated silica nanoparticles, functionalized with melanoma-targeting peptides, can induce a form of programmed cell death known as ferroptosis in starved cancer cells and cancer-bearing mice. Tumour xenografts in mice intravenously injected with nanoparticles using a high-dose multiple injection scheme exhibit reduced growth or regression, in a manner that is reversed by the pharmacological inhibitor of ferroptosis, liproxstatin-1. These data demonstrate that ferroptosis can be targeted by ultrasmall silica nanoparticles and may have therapeutic potential.
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Affiliation(s)
- Sung Eun Kim
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
- BCMB Allied Program, Weill Cornell Medical College, New York, New York 10065, USA
| | - Li Zhang
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Kai Ma
- Department of Materials Science &Engineering, Cornell University, Ithaca, New York 14853, USA
| | - Michelle Riegman
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Feng Chen
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Irina Ingold
- Helmholtz Zentrum München, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Marcus Conrad
- Helmholtz Zentrum München, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Melik Ziya Turker
- Department of Materials Science &Engineering, Cornell University, Ithaca, New York 14853, USA
| | - Minghui Gao
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Xuejun Jiang
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
- BCMB Allied Program, Weill Cornell Medical College, New York, New York 10065, USA
| | - Sebastien Monette
- Tri-Institutional Laboratory of Comparative Pathology, The Rockefeller University, Sloan Kettering Institute for Cancer Research, Weill Cornell Medical College, New York, New York 10065, USA
| | - Mohan Pauliah
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Mithat Gonen
- Department of Epidemiology and Biostatistics, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Pat Zanzonico
- Department of Medical Physics, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Thomas Quinn
- Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, USA
| | - Ulrich Wiesner
- Department of Materials Science &Engineering, Cornell University, Ithaca, New York 14853, USA
| | - Michelle S Bradbury
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
- Molecular Pharmacology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
| | - Michael Overholtzer
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, New York 10065, USA
- BCMB Allied Program, Weill Cornell Medical College, New York, New York 10065, USA
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Bradbury MS, Pauliah M, Zanzonico P, Wiesner U, Patel S. Intraoperative mapping of sentinel lymph node metastases using a clinically translated ultrasmall silica nanoparticle. Wiley Interdiscip Rev Nanomed Nanobiotechnol 2015; 8:535-53. [PMID: 26663853 DOI: 10.1002/wnan.1380] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 09/29/2015] [Accepted: 10/12/2015] [Indexed: 12/22/2022]
Abstract
The management of regional lymph nodes in patients with melanoma has undergone a significant paradigm shift over the past several decades, transitioning from the use of more aggressive surgical approaches, such as lymph node basin dissection, to the application of minimally invasive sentinel lymph node (SLN) biopsy methods to detect the presence of nodal micrometastases. SLN biopsy has enabled reliable, highly accurate, and low-morbidity staging of regional lymph nodes in early stage melanoma as a means of guiding treatment decisions and improving patient outcomes. The accurate identification and staging of lymph nodes is an important prognostic factor, identifying those patients for whom the expected benefits of nodal resection outweigh attendant surgical risks. However, currently used standard-of-care technologies for SLN detection are associated with significant limitations. This has fueled the development of clinically promising platforms that can serve as intraoperative visualization tools to aid accurate and specific determination of tumor-bearing lymph nodes, map cancer-promoting biological properties at the cellular/molecular levels, and delineate nodes from adjacent critical structures. Among a number of promising cancer-imaging probes that might facilitate achievement of these ends is a first-in-kind ultrasmall tumor-targeting inorganic (silica) nanoparticle, designed to overcome translational challenges. The rationale driving these considerations and the application of this platform as an intraoperative treatment tool for guiding resection of cancerous lymph nodes is discussed and presented within the context of alternative imaging technologies. WIREs Nanomed Nanobiotechnol 2016, 8:535-553. doi: 10.1002/wnan.1380 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Michelle S Bradbury
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, NY, USA.,Department of Molecular Pharmacology and Chemistry Program, Sloan Kettering Institute for Cancer Research, New York, NY, USA
| | - Mohan Pauliah
- Department of Radiology, Sloan Kettering Institute for Cancer Research, New York, NY, USA
| | - Pat Zanzonico
- Department of Medical Physics, Sloan Kettering Institute for Cancer Research, New York, NY, USA
| | - Ulrich Wiesner
- Department of Material Science & Engineering, Cornell University, Ithaca, NY, USA
| | - Snehal Patel
- Department of Surgery, Sloan Kettering Institute for Cancer Research, New York, NY, USA
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Mazura JC, Karimi S, Pauliah M, Banihashemi MA, Gobin YP, Bilsky MH, Patsalides A. Dynamic contrast-enhanced magnetic resonance perfusion compared with digital subtraction angiography for the evaluation of extradural spinal metastases: a pilot study. Spine (Phila Pa 1976) 2014; 39:E950-4. [PMID: 24827525 DOI: 10.1097/brs.0000000000000409] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN This was a retrospective study comparing dynamic contrast-enhanced magnetic resonance (DCE-MR) perfusion with digital subtraction angiography (DSA) in determining the vascularity of spinal tumors. OBJECTIVE To report on the efficacy of DCE-MR perfusion as a potential noninvasive surrogate for measuring vascularity and thus determine the need for preoperative embolization. SUMMARY OF BACKGROUND DATA Although primary spinal tumors are rare, spine metastases are relatively common and symptomatic in approximately 14% of patients. Symptomatic patients require palliation with radiotherapy and/or surgery, with possible preoperative endovascular embolization of the tumor. METHODS A retrospective review revealed 10 patients with 11 diseased vertebral bodies who had received spine DCE-MR perfusion studies and subsequently underwent spinal DSA. Processed MR data were used to calculate a blood flow ratio comparing blood flow with a diseased and an adjacent normal vertebral body. Spinal tumor vascularity was graded on the basis of angiographic tumor blush from 0 (decreased enhancement compared with a normal vertebral body) to 4 (marked tumor blush with early arteriovenous shunting). RESULTS Eight vertebral bodies demonstrated increased vascularity on DSA with blood flow ratios of greater than 1.8, 2 vertebral bodies demonstrated normal enhancement on DSA with cerebral blood flow (CBF) ratio of 0.55 to 1.14, and 1 vertebral body level had decreased enhancement on DSA, with a CBF ratio of 0.43. There was a strong correlation between CBF ratio and DSA score, with Spearman ρ = 0.87 (P = 0.00012). CONCLUSION These data show a statistically significant correlation between CBF ratio and DSA and suggest that DCE-MR perfusion can serve as a surrogate to DSA for determining tumor vascularity in patients with extramedullary spinal metastases.
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Affiliation(s)
- Jan C Mazura
- *Department of Radiology, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY †Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY ‡Division of Interventional Neuroradiology, Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY; and §Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
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Pauliah M, Saxena V, Haris M, Husain N, Rathore RKS, Gupta RK. Improved T1-weighted dynamic contrast-enhanced MRI to probe microvascularity and heterogeneity of human glioma. Magn Reson Imaging 2007; 25:1292-9. [PMID: 17490844 DOI: 10.1016/j.mri.2007.03.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Accepted: 03/21/2007] [Indexed: 11/23/2022]
Abstract
Dynamic contrast-enhanced (DCE) T(1)-weighted magnetic resonance imaging (MRI) is a powerful tool capable of providing quantitative assessment of contrast uptake and characterization of microvascular structure in human gliomas. The kinetics of the bolus injection doped with increasing concentrations of gadopentate dimeglumine (Gd-DTPA) depends on tissue as well as pulse sequence parameters. A simple method is described that overcomes the limitation of relative signal increase measurement and may lead to improved accuracy in quantification of perfusion indices of glioma. Based on an analysis of the contrast behavior of spoiled gradient-recalled echo sequence; a parameter K with arbitrary unit 5.0 is introduced, which provides a better approximation to the differential T(1) relaxation rate. DCE-MRI measurements of relative cerebral blood volume (rCBV) and cerebral blood flow (rCBF) were calculated in 25 patients with brain tumors (15=high-grade glioma, 10=low-grade glioma). The mean rCBV was 6.46 +/- 2.45 in high-grade glioma and 2.89 +/- 1.47 in the low-grade glioma. The rCBF was 3.94 +/- 1.47 in high-grade glioma while 2.25 +/- 0.87 in low-grade glioma. A significant difference in rCBF and rCBV was found between high- and low-grade gliomas. This simple and robust technique reveals the complexity of tumor vasculature and heterogeneity that may aid in therapeutic management especially in nonenhancing high-grade gliomas. We conclude that the precontrast medium steady-state residue parameter K may be useful in improved quantification of perfusion indices in human glioma using T(1)-weighted DCE-MRI.
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Affiliation(s)
- Mohan Pauliah
- MR Section, Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
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Gupta RK, Haris M, Husain N, Husain M, Prasad KN, Pauliah M, Srivastava C, Tripathi M, Rastogi M, Behari S, Singh A, Rathore D, Rathore RKS. Relative cerebral blood volume is a measure of angiogenesis in brain tuberculoma. J Comput Assist Tomogr 2007; 31:335-41. [PMID: 17538275 DOI: 10.1097/01.rct.0000243443.10739.16] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to correlate the perfusion indices with magnetic resonance imaging-derived cellular and necrotic fraction of the tuberculoma and angiogenesis metrics on histopathology. METHODS We performed dynamic contrast-enhanced magnetic resonance imaging in 13 excised brain tuberculoma patients. Microvascular density and vascular endothelial growth factor (VEGF)-expressing cells were quantified from the excised tuberculoma. The cellular and necrotic fractions of the tuberculomas were quantified on a postcontrast T1-weighted imaging. RESULTS Relative cerebral blood volume of cellular portion significantly correlated with cellular fraction volume (r = 0.882, P < 0.001), microvascular density (r = 0.900, P < 0.001), and VEGF (r = 0.886, P < 0.001) of the 13 excised tuberculomas. Microvascular density also correlated significantly with VEGF (r = 0.919, P < 0.001). CONCLUSIONS Relative cerebral blood volume is a measure of angiogenesis in the cellular fraction of the brain tuberculoma. This information may be of value in predicting the therapeutic response in future.
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Affiliation(s)
- Rakesh K Gupta
- Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
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