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Wang J, Zha M, Zhao H, Yue W, Wu D, Li K. Detection of Kidney Dysfunction through In Vivo Magnetic Resonance Imaging with Renal-Clearable Gadolinium Nanoprobes. Anal Chem 2022; 94:4005-4011. [PMID: 35188754 DOI: 10.1021/acs.analchem.1c05140] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Kidney dysfunction is a clinical syndrome that can subsequently result in lethal kidney failure. The exploration of emerging bioimaging contrast agents with translational potential is highly challenging for a feasible diagnosis of kidney dysfunction. Herein, a class of renal-clearable gadolinium nanoparticles (Gd@PEG NPs) with an ultrasmall size of ∼5 nm, good monodispersity, and T1 relaxivity are synthesized using mesoporous silica nanoparticles as the template. Assisted by such renal-clearable Gd@PEG NPs, the diagnosis of kidney dysfunction in a mice model with a damaged kidney has been achieved through in vivo noninvasive magnetic resonance imaging. As a result, this work paves the way to synthesize monodispersible ultrasmall Gd contrast agents, facilitating the exploration of translational strategies for an in vivo analysis of kidney dysfunction.
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Affiliation(s)
- Jun Wang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Menglei Zha
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Hui Zhao
- Department of MRI Diagnosis, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Wentong Yue
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Decheng Wu
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Kai Li
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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2
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Merlin JPJ, Li X. Role of Nanotechnology and Their Perspectives in the Treatment of Kidney Diseases. Front Genet 2022; 12:817974. [PMID: 35069707 PMCID: PMC8766413 DOI: 10.3389/fgene.2021.817974] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022] Open
Abstract
Nanoparticles (NPs) are differing in particle size, charge, shape, and compatibility of targeting ligands, which are linked to improved pharmacologic characteristics, targetability, and bioavailability. Researchers are now tasked with developing a solution for enhanced renal treatment that is free of side effects and delivers the medicine to the active spot. A growing number of nano-based medication delivery devices are being used to treat renal disorders. Kidney disease management and treatment are currently causing a substantial global burden. Renal problems are multistep processes involving the accumulation of a wide range of molecular and genetic alterations that have been related to a variety of kidney diseases. Renal filtration is a key channel for drug elimination in the kidney, as well as a burgeoning topic of nanomedicine. Although the use of nanotechnology in the treatment of renal illnesses is still in its early phases, it offers a lot of potentials. In this review, we summarized the properties of the kidney and characteristics of drug delivery systems, which affect a drug’s ability should focus on the kidney and highlight the possibilities, problems, and opportunities.
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Affiliation(s)
- J P Jose Merlin
- Department of Internal Medicine, Mayo Clinic, Rochester, MN, United States
| | - Xiaogang Li
- Department of Internal Medicine, Mayo Clinic, Rochester, MN, United States.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
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3
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Ma H, Wang J, Zhang XD. Near-infrared II emissive metal clusters: From atom physics to biomedicine. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214184] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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4
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Chen Y, Pei P, Lei Z, Zhang X, Yin D, Zhang F. A Promising NIR-II Fluorescent Sensor for Peptide-Mediated Long-Term Monitoring of Kidney Dysfunction. Angew Chem Int Ed Engl 2021; 60:15809-15815. [PMID: 33876514 DOI: 10.1002/anie.202103071] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/13/2021] [Indexed: 01/06/2023]
Abstract
Kidney disease is usually "silent" at the early stage but can lead to severe kidney failure later on. The development of bioimaging probes with rapid distribution and long-term retention in the kidney is significant for the precise diagnosis of renal diseases. Here, a strategy for the peptide-mediated delivery and long-term accumulation (>48 h) of second near-infrared window (NIR-II) fluorophores into the kidney is demonstrated. It is shown that both the hepatic-cleared organic molecules and fast renal-cleared ultrasmall nanoparticles can be retained in the kidney after conjugation to the peptide with high polarity. Moreover, a ROS-responsive activatable bilateral NIR-II sensor was designed based on the kidney targeting peptide, which enables both in vivo long-term kidney monitoring and in vitro urine analysis. The capability of the peptide-based sensor to detect early kidney injury and report on kidney dysfunctional progression is particularly crucial for chemotherapy regimen optimization and timely renoprotective intervention during medication.
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Affiliation(s)
- Ying Chen
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Peng Pei
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Zuhai Lei
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Xin Zhang
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Dongrui Yin
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Fan Zhang
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
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5
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Chen Y, Pei P, Lei Z, Zhang X, Yin D, Zhang F. A Promising NIR‐II Fluorescent Sensor for Peptide‐Mediated Long‐Term Monitoring of Kidney Dysfunction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ying Chen
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
| | - Peng Pei
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
| | - Zuhai Lei
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
| | - Xin Zhang
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
| | - Dongrui Yin
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
| | - Fan Zhang
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
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6
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Ma Y, Cai F, Li Y, Chen J, Han F, Lin W. A review of the application of nanoparticles in the diagnosis and treatment of chronic kidney disease. Bioact Mater 2020; 5:732-743. [PMID: 32596555 PMCID: PMC7303522 DOI: 10.1016/j.bioactmat.2020.05.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic kidney disease (CKD) poses a great burden to global public health as current therapies are generally ineffective. Early detection and effective therapy are crucial for the future prevention and progression of CKD. Nanoparticles (NPs) vary by particle size, charge, shape and the density of targeting ligands and are associated with enhancement of the pharmacokinetic properties, targetability, or the bioavailability of drugs. Thus, the emergence of NPs in medicine has provided novel solutions to the potential diagnosis and treatment of CKD. This review describes the current experimental research, clinical applications of NPs, the current challenges, and upcoming opportunities in the diagnosis and treatment of CKD.
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Affiliation(s)
- Yanhong Ma
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Institute of Nephrology, Zhejiang University, Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province, Hangzhou, 310003, China
| | - Fanghao Cai
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Institute of Nephrology, Zhejiang University, Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province, Hangzhou, 310003, China
| | - Yangyang Li
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China
| | - Jianghua Chen
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Institute of Nephrology, Zhejiang University, Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province, Hangzhou, 310003, China
| | - Fei Han
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Institute of Nephrology, Zhejiang University, Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province, Hangzhou, 310003, China
| | - Weiqiang Lin
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Institute of Nephrology, Zhejiang University, Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province, Hangzhou, 310003, China.,Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China
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7
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Cheng L, Jiang D, Kamkaew A, Valdovinos HF, Im HJ, Feng L, England CG, Goel S, Barnhart TE, Liu Z, Cai W. Renal-Clearable PEGylated Porphyrin Nanoparticles for Image-guided Photodynamic Cancer Therapy. ADVANCED FUNCTIONAL MATERIALS 2017; 27:1702928. [PMID: 29151826 PMCID: PMC5687274 DOI: 10.1002/adfm.201702928] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Noninvasive dynamic positron emission tomography (PET) imaging was used to investigate the balance between renal clearance and tumor uptake behaviors of polyethylene glycol (PEG)-modified porphyrin nanoparticles (TCPP-PEG) with various molecular weights. TCPP-PEG10K nanoparticles with clearance behavior would be a good candidate for PET image-guided photodynamic therapy.
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Affiliation(s)
- Liang Cheng
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China
- Departments of Radiology, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Dawei Jiang
- Departments of Radiology, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Anyanee Kamkaew
- Departments of Radiology, University of Wisconsin-Madison, Wisconsin 53705, United States
- School of Chemistry, Institute of Science, Suranaree Institute of Science, Nakhon Ratchasima 30000, Thailand
| | - Hector F Valdovinos
- Department of Medical Physics, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Hyung-Jun Im
- Departments of Radiology, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Liangzhu Feng
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Christopher G England
- Department of Medical Physics, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Shreya Goel
- Materials Science Program, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Todd E Barnhart
- Department of Medical Physics, University of Wisconsin-Madison, Wisconsin 53705, United States
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Weibo Cai
- Departments of Radiology, University of Wisconsin-Madison, Wisconsin 53705, United States
- Department of Medical Physics, University of Wisconsin-Madison, Wisconsin 53705, United States
- Materials Science Program, University of Wisconsin-Madison, Wisconsin 53705, United States
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8
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Huang J, Gretz N. Light-Emitting Agents for Noninvasive Assessment of Kidney Function. ChemistryOpen 2017; 6:456-471. [PMID: 28794936 PMCID: PMC5542756 DOI: 10.1002/open.201700065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Indexed: 02/03/2023] Open
Abstract
The noninvasive assessment of kidney function and diagnosis of kidney disease have long been challenges. Traditional methods are not routinely available, because the existing protocols are cumbersome, time consuming, and invasive. In the past few years, significant progress in the area of diagnosing kidney function and disease on the basis of light-emitting agents has been made. Herein, we briefly review light-emitting agents, including organic fluorescent agents and inorganic renal clearable luminescent nanoparticles for the noninvasive and real-time monitoring of kidney function and disease. Moreover, some significant requirements and strategies regarding the design of ideal glomerular filtration rate agents and renal clearable nanoparticles are discussed. Finally, we discuss future challenges in expediting clinical translation of these developed light-emitting agents, along with considerations of the efforts that need to be made to develop new agents and diagnosing kidney disease.
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Affiliation(s)
- Jiaguo Huang
- Medical Research Center, Medical Faculty MannheimUniversity of HeidelbergTheodor-Kutzer-Ufer 1–368167MannheimGermany
| | - Norbert Gretz
- Medical Research Center, Medical Faculty MannheimUniversity of HeidelbergTheodor-Kutzer-Ufer 1–368167MannheimGermany
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9
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Yu M, Zhou J, Du B, Ning X, Authement C, Gandee L, Kapur P, Hsieh JT, Zheng J. Noninvasive Staging of Kidney Dysfunction Enabled by Renal-Clearable Luminescent Gold Nanoparticles. Angew Chem Int Ed Engl 2016; 55:2787-91. [PMID: 26800513 PMCID: PMC4834218 DOI: 10.1002/anie.201511148] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 12/29/2022]
Abstract
As a "silent killer", kidney disease is often hardly detected at an early stage but can cause lethal kidney failure later on. Thus, a preclinical imaging technique that can readily differentiate between the stages of kidney dysfunction is highly desired for improving our fundamental understanding of kidney disease progression. Herein, we report that in vivo fluorescence imaging, enabled by renal-clearable near-infrared-emitting gold nanoparticles, can noninvasively detect kidney dysfunction, report on the dysfunctional stages, and even reveal adaptive function in a mouse model of unilateral obstructive nephropathy, which cannot be diagnosed with routine kidney function markers. These results demonstrate that low-cost fluorescence kidney functional imaging is highly sensitive and useful for the longitudinal, noninvasive monitoring of kidney dysfunction progression in preclinical research.
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Affiliation(s)
- Mengxiao Yu
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
| | - Jiancheng Zhou
- Department of Urology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Bujie Du
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
| | - Xuhui Ning
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
| | - Craig Authement
- Department of Urology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Leah Gandee
- Department of Urology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Payal Kapur
- Department of Urology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
- Department of Pathology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Jer-Tsong Hsieh
- Department of Urology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Jie Zheng
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA.
- Department of Urology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA.
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10
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Yu M, Zhou J, Du B, Ning X, Authement C, Gandee L, Kapur P, Hsieh JT, Zheng J. Noninvasive Staging of Kidney Dysfunction Enabled by Renal-Clearable Luminescent Gold Nanoparticles. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511148] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mengxiao Yu
- Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 W. Campbell Rd. Richardson TX 75080 USA
| | - Jiancheng Zhou
- Department of Urology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Bujie Du
- Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 W. Campbell Rd. Richardson TX 75080 USA
| | - Xuhui Ning
- Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 W. Campbell Rd. Richardson TX 75080 USA
| | - Craig Authement
- Department of Urology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Leah Gandee
- Department of Urology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Payal Kapur
- Department of Urology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
- Department of Pathology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Jer-Tsong Hsieh
- Department of Urology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Jie Zheng
- Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 W. Campbell Rd. Richardson TX 75080 USA
- Department of Urology; The University of Texas Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
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11
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Yu M, Liu J, Ning X, Zheng J. High-contrast Noninvasive Imaging of Kidney Clearance Kinetics Enabled by Renal Clearable Nanofluorophores. Angew Chem Int Ed Engl 2015; 54:15434-8. [PMID: 26510715 PMCID: PMC4715620 DOI: 10.1002/anie.201507868] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 10/13/2015] [Indexed: 01/21/2023]
Abstract
Noninvasive imaging of kidney clearance kinetics (KCK) of renal clearable probes is key to studying unilateral kidney function diseases, but such imaging is highly challenging to achieve with in vivo fluorescence. While this long-standing challenge is often attributed to the limited light penetration depth, we found that rapid and persistent accumulation of conventional dyes in the skin "shadowed" real fluorescence signals from the kidneys and prevented noninvasive imaging of KCK, which, however, can be addressed with renal clearable nanofluorophores. By integrating near infrared emission with efficient renal clearance and ultralow background interference, the nanofluorophores can increase kidney-contrast enhancement and imaging-time window by approximately 50- and 1000-fold over conventional dyes, and significantly minimize deviation between noninvasive and invasive KCK, laying down a foundation for translating in vivo fluorescence imaging in preclinical noninvasive kidney function assessments.
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Affiliation(s)
- Mengxiao Yu
- Department of Chemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080 (USA)
| | - Jinbin Liu
- Department of Chemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080 (USA)
| | - Xuhui Ning
- Department of Chemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080 (USA)
| | - Jie Zheng
- Department of Chemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080 (USA).
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12
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Yu M, Liu J, Ning X, Zheng J. High-contrast Noninvasive Imaging of Kidney Clearance Kinetics Enabled by Renal Clearable Nanofluorophores. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507868] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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13
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Kajbafzadeh AM, Mehdizadeh M, Aryan Z, Ebadi M, Esfahani SA, Montaser-Kouhsari L, Elmi A, Talab SS, Sadeghi Z. Drainage-related ultrasonography (DRUS): a novel technique for discriminating obstructive and nonobstructive hydroureters in children. J Ultrasound 2015; 18:117-25. [PMID: 26191099 DOI: 10.1007/s40477-014-0128-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 08/01/2014] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Despite advances in urologic imaging, the paucity of an optimal technique that accurately clarifies obstructive and nonobstructive hydroureter exists. OBJECTIVE This study was conducted to introduce a novel and modified ultrasonographic technique, known as drainage-related ultrasonography (DRUS), discriminating obstructive and nonobstructive, nonrefluxing hydroureter. MATERIALS AND METHODS A total of 358 children (mean age, 3.7 years) with 418 nonrefluxing hydroureter were included. These children were composed of two groups of obstructive nonrefluxing (141 children with 157 dilated ureters) and nonobstructive, nonrefluxing (217 children with 261 hydroureter). The definite diagnosis regarding the subtype of hydroureter was derived from appropriate investigation. The maximum diameter of the dilated ureter, which was observed on ultrasonography, was recorded before and after 3 h of catheterization, as D1 and D2, respectively. To assess the D ratio, a formula was developed, that is, [(|D1 - D2|)/D1] × 100. Values were recorded and cutoff points were set to discriminate between subtypes. RESULTS Obstructive versus nonobstructive subtypes of nonrefluxing hydroureter were clarified with 78.5 % sensitivity and 83.4 % specificity, by setting a cutoff point of 22 % for the D ratio. Regardless of the cutoff point assigned to the reduction in D (D2 compared with D1), DRUS revealed 93.9 % sensitivity, 80.6 % specificity, 63.2 % positive predictive value, and 97.4 % negative predictive value in discriminating upper from lower obstruction. CONCLUSION DRUS affords favorable results in terms of differentiating between obstructive and nonobstructive, nonrefluxing hydroureter, as well as between upper and lower obstruction in obstructive cases. It has the potential to become an efficient imaging modality in the diagnostic algorithm of hydroureter.
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Affiliation(s)
- Abdol-Mohammad Kajbafzadeh
- Pediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran
| | - Mehrzad Mehdizadeh
- Pediatric Radiology Department, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Aryan
- Pediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran
| | - Maryam Ebadi
- Pediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran
| | - Shadi Abdar Esfahani
- Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Boston, MA USA
| | - Laleh Montaser-Kouhsari
- Pediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran
| | - Azadeh Elmi
- Division of Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, White 270, Boston, MA 02114 USA
| | - Saman Shafaat Talab
- Division of Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, White 270, Boston, MA 02114 USA
| | - Zhina Sadeghi
- Department of Urology, University Hospitals of Case Medical Center, Case Western Reserve University, Cleveland, OH 44106 USA
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14
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Recurrent Severe Abdominal Pain in the Pediatric Patient. J Emerg Med 2014; 46:627-31. [DOI: 10.1016/j.jemermed.2013.11.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 10/29/2013] [Accepted: 11/17/2013] [Indexed: 11/19/2022]
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15
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Rowe CK, Franco FB, Barbosa JABA, Minnillo BJ, Chow JS, Treves T, Retik AB, Nguyen HT. A novel method of evaluating ureteropelvic junction obstruction: dynamic near infrared fluorescence imaging compared to standard modalities to assess urinary obstruction in a swine model. J Urol 2012; 188:1978-85. [PMID: 22999537 DOI: 10.1016/j.juro.2012.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Indexed: 11/30/2022]
Abstract
PURPOSE Dynamic near infrared fluorescence imaging of the urinary tract provides a promising way to diagnose ureteropelvic junction obstruction. Initial studies demonstrated the ability to visualize urine flow and peristalsis in great detail. We analyzed the efficacy of near infrared imaging in evaluating ureteropelvic junction obstruction, renal involvement and the anatomical detail provided compared to conventional imaging modalities. MATERIALS AND METHODS Ten swine underwent partial or complete unilateral ureteral obstruction. Groups were survived for the short or the long term. Imaging was performed with mercaptoacetyltriglycine diuretic renogram, magnetic resonance urogram, excretory urogram, ultrasound and near infrared imaging. Scoring systems for ureteropelvic junction obstruction were developed for magnetic resonance urogram and near infrared imaging. Physicians and medical students graded ureteropelvic junction obstruction based on magnetic resonance urogram and near infrared imaging results. RESULTS Markers of vascular and urinary dynamics were quantitatively consistent among control renal units. The same markers were abnormal in obstructed renal units with significantly different times of renal phase peak, start of pelvic phase and start of renal uptake. Such parameters were consistent with those obtained with mercaptoacetyltriglycine diuretic renography. Near infrared imaging provided live imaging of urinary flow, which was helpful in identifying the area of obstruction for surgical planning. Physicians and medical students categorized the degree of obstruction appropriately for fluorescence imaging and magnetic resonance urogram. CONCLUSIONS Near infrared imaging offers a feasible way to obtain live, dynamic images of urine flow and ureteral peristalsis. Qualitative and quantitative parameters were comparable to those of conventional imaging. Findings support fluorescence imaging as an accurate, easy to use method of diagnosing ureteropelvic junction obstruction.
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Affiliation(s)
- Courtney K Rowe
- Robotic Surgery, Research and Training Center, Department of Urology, Children's Hospital, Boston, Massachusetts 02115, USA
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