We explored the use of a perfluoro-15-crown-5 ether nanoemulsion (PFC) for measuring tissue oxygenation using a mouse model of vascular cognitive impairment.
Seventeen C57BL/6 mice underwent stereotactic injection of PFC coupled to a fluorophore into the striatum and corpus callosum. Combined 1H/19F magnetic resonance imaging (MRI) to localize the PFC and R1 mapping to assess pO2 were performed. The effect of gas challenges on measured R1 was investigated. All mice then underwent bilateral implantation of microcoils around the common carotid arteries to induce global cerebral hypoperfusion. 19F-MRI and R1 mapping were performed 1 day, 1 week, and 4 weeks after microcoil implantation. In vivo R1 values were converted to pO2 through in vitro calibration. Tissue reaction to the PFC was assessed through ex vivo immunohistochemistry of microglial infiltration.
R1 increased with increasing oxygen concentrations both in vitro and in vivo and the strength of the 19F signal remained largely stable over 4 weeks. In the two mice that received all four scans, tissue pO2 decreased after microcoil implantation and recovered 4 weeks later. We observed infiltration of the PFC deposits by microglia.
Despite remaining technical challenges, intracerebrally injected PFC is suitable for monitoring brain oxygenation in vivo.
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Filippi M (2015) Oxford textbook of neuroimaging. https://doi.org/10.1093/med/9780199664092.001.0001
Flögel U, Ding Z, Hardung H, Jander S, Reichmann G, Jacoby C, Schubert R, Schrader J (2008) In vivo monitoring of inflammation after cardiac and cerebral ischemia by fluorine magnetic resonance imaging. Circulation 118:140–148
Ruiz-Cabello J, Walczak P, Kedziorek DA, Chacko VP, Schmieder AH, Wickline SA, Lanza GM, Bulte JWM (2008) In vivo “hot spot” MR imaging of neural stem cells using fluorinated nanoparticles. Magn Reson Med 60:1506–1511
Srinivas M, Boehm-Sturm P, Figdor CG, de Vries IJ, Hoehn M (2012) Labeling cells for in vivo tracking using19F MRI. Biomaterials 33:8830–8840
Waiczies H, Lepore S, Drechsler S, Qadri F, Purfürst B, Sydow K, Dathe M, Kühne A, Lindel T, Hoffmann W, Pohlmann A, Niendorf T, Waiczies S (2013) Visualizing brain inflammation with a shingled-leg radio-frequency head probe for 19F/1H MRI. Sci Rep 3:1280
Pittman RN (2011) Regulation of tissue oxygenation. Colloq Ser Integr Syst Physiol From Mol Funct. https://doi.org/10.4199/c00029ed1v01y201103isp017
Spiess BD (2009) Perfluorocarbon emulsions as a promising technology: a review of tissue and vascular gas dynamics. J Appl Physiol 106:1444–1452
Riess JG, Riess JG (2001) Oxygen carriers (“blood substitutes”)—raison d’etre, chemistry, and some physiology. Chem Rev 101:2797–2919
Parhami P, Fung BM (1983) Fluorine-19 relaxation study of perfluoro chemicals as oxygen carriers. J Phys Chem 87:1928–1931
Jordan BF, Cron GO, Gallez B (2009) Rapid monitoring of oxygenation by 19F magnetic resonance imaging: simultaneous comparison with fluorescence quenching. Magn Reson Med 61:634–638
Mason RP, Hunjan S, Constantinescu A, Song Y, Zhao D, Hahn EW, Antich PP, Peschke P (2003) Tumor oximetry: comparison of 19F MR EPI and electrodes. Adv Exp Med Biol 530:19–27
Zhao D, Jiang L, Mason RP (2004) Measuring changes in tumor oxygenation. Methods Enzymol 386:378–418
Dichgans M, Leys D (2017) Vascular cognitive impairment. Circ Res 120:573–591
Wakita H, Tomimoto H, Akiguchi I, Kimura J (1994) Glial activation and white matter changes in the rat brain induced by chronic cerebral hypoperfusion: an immunohistochemical study. Acta Neuropathol 87:484–492
Shibata M, Ohtani R, Ihara M, Tomimoto H (2004) White matter lesions and glial activation in a novel mouse model of chronic cerebral hypoperfusion. Stroke 35:2598–2603
Boehm-Sturm P, Füchtemeier M, Foddis M, Mueller S, Trueman RC, Zille M, Rinnenthal JL, Kypraios T, Shaw L, Dirnagl U, Farr TD (2017) Neuroimaging biomarkers predict brain structural connectivity change in a mouse model of vascular cognitive impairment. Stroke 48:468–475
Waiczies S, Millward JM, Starke L, Delgado PR, Huelnhagen T, Prinz C, Marek D, Wecker D, Wissmann R, Koch SP, Boehm-Sturm P, Waiczies H, Niendorf T, Pohlmann A (2017) Enhanced fluorine-19 MRI sensitivity using a cryogenic radiofrequency probe: technical developments and ex vivo demonstration in a mouse model of neuroinflammation. Sci Rep 7:9808
Ebner B, Behm P, Jacoby C, Burghoff S, French BA, Schrader J, Flögel U (2010) Early assessment of pulmonary inflammation by 19F MRI in vivo. Circ Cardiovasc Imaging 3:202–210
Grapentin C, Mayenfels F, Barnert S, Süss R, Schubert R, Temme S, Jacoby C, Schrader J, Flögel U (2014) Optimization of perfluorocarbon nanoemulsions for molecular imaging by 19F MRI. In: Seifalian A, de Mel A, Kalaskar D (eds) Nanomedicine, One Central Press, pp 268–286
Kowalewski J, Levy GC, Johnson LF, Palmer L (1977) A three-parameter non-linear procedure for fitting inversion-recovery measurements of spin-lattice relaxation times. J Magn Reson 26:533–536
Core Team R (2016) R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna
Schneider CA, Rasband WS, Eliceiri KW (2012) NIH Image to ImageJ: 25 years of image analysis. Nat Methods 9:671–675
Ito D, Imai Y, Ohsawa K, Nakajima K, Fukuuchi Y, Kohsaka S (1998) Microglia-specific localisation of a novel calcium binding protein, Iba1. Mol Brain Res 57:1–9
Jacoby C, Temme S, Mayenfels F, Benoit N, Krafft MP, Schubert R, Schrader J, Flögel U (2014) Probing different perfluorocarbons for in vivo inflammation imaging by19F MRI: image reconstruction, biological half-lives and sensitivity. NMR Biomed 27:261–271
Constantinides C, Maguire ML, Stork L, Swider E, Srinivas M, Carr CA, Schneider JE (2017) Temporal accumulation and localization of isoflurane in the C57BL/6 mouse and assessment of its potential contamination in19F MRI with perfluoro-crown-ether-labeled cardiac progenitor cells at 9.4 Tesla. J Magn Reson Imaging 45:1659–1667
Baltes C, Radzwill N, Bosshard S, Marek D, Rudin M (2009) Micro MRI of the mouse brain using a novel 400 MHz cryogenic quadrature RF probe. NMR Biomed 22:834–842
Mignion L, Magat J, Schakman O, Marbaix E, Gallez B, Jordan BF (2013) Hexafluorobenzene in comparison with perfluoro-15-crown-5-ether for repeated monitoring of oxygenation using 19F MRI in a mouse model. Magn Reson Med 69:248–254
Jadavji NM, Farr TD, Lips J, Khalil AA, Boehm-Sturm P, Foddis M, Harms C, Füchtemeier M, Dirnagl U (2015) Elevated levels of plasma homocysteine, deficiencies in dietary folic acid and uracil-DNA glycosylase impair learning in a mouse model of vascular cognitive impairment. Behav Brain Res 283:215–226
Temma T, Yamazaki M, Miyanohara J, Shirakawa H, Kondo N, Koshino K, Kaneko S, Iida H (2017) Sequential PET estimation of cerebral oxygen metabolism with spontaneous respiration of 15 O-gas in mice with bilateral common carotid artery stenosis. J Cereb Blood Flow Metab 37:3334–3343
Sakadžić S, Roussakis E, Yaseen MA, Mandeville ET, Srinivasan VJ, Arai K, Ruvinskaya S, Devor A, Lo EH, Vinogradov SA, Boas DA (2010) Two-photon high-resolution measurement of partial pressure of oxygen in cerebral vasculature and tissue. Nat Methods 7:755–759
Zhang C, Bélanger S, Pouliot P, Lesage F (2015) Measurement of local partial pressure of oxygen in the brain tissue under normoxia and epilepsy with phosphorescence lifetime microscopy. PLoS One 10:e0135536
Lyons DG, Parpaleix A, Roche M, Charpak S (2016) Mapping oxygen concentration in the awake mouse brain. Elife. https://doi.org/10.7554/elife.12024
Robinson SP, Griffiths JR (2004) Current issues in the utility of 19F nuclear magnetic resonance methodologies for the assessment of tumour hypoxia. Philos Trans R Soc Lond B Biol Sci 359:987–996
Dardzinski BJ, Sotak CH (1994) Rapid tissue oxygen tension mapping using 19F inversion-recovery echo-planar imaging of P erfluoro-15-crown-5-ether. Magn Reson Med 32:88–97
Yu JX, Cui W, Zhao D, Mason RP (2008) Non-invasive physiology and pharmacology using 19F magnetic resonance. In: Tressaud A, Haufe G (eds) Fluorine and Health. Elsevier, Amsterdam, pp 197–276
Mason RP, Antich PP, Babcock EE, Gerberich JL, Nunnally RL (1989) Perfluorocarbon imaging in vivo: a 19F MRI study in tumor-bearing mice. Magn Reson Imaging 7:475–485
Mason RP, Antich PP, Babcock EE, Constantinescu A, Peschke P, Hahn EW (1994) Non-invasive determination of tumor oxygen tension and local variation with growth. Int J Radiat Oncol Biol Phys 29:95–103
Mcintyre DJO, McCoy CL, Griffiths JR (1999) Tumour oxygenation measurements by F-19 magnetic resonance imaging of perfluorocarbons. Curr Sci 76:753–762
Baete SH, Vandecasteele J, De Deene Y (2011) 19F MRI oximetry: simulation of perfluorocarbon distribution impact. Phys Med Biol 56:2535–2557
Srinivas M, Cruz LJ, Bonetto F, Heerschap A, Figdor CG, de Vries IJM (2010) Customizable, multi-functional fluorocarbon nanoparticles for quantitative in vivo imaging using 19F MRI and optical imaging. Biomaterials 31:7070–7077
Xue M, Del Bigio MR (2000) Intracerebral injection of autologous whole blood in rats: time course of inflammation and cell death. Neurosci Lett 283:230–232
Aucott H, Lundberg J, Salo H, Klevenvall L, Damberg P, Ottosson L, Andersson U, Holmin S, Erlandsson Harris H (2018) Neuroinflammation in response to intracerebral injections of different HMGB1 redox isoforms. J Innate Immun 10:215–227
Boehm-Sturm P, Aswendt M, Minassian A, Michalk S, Mengler L, Adamczak J, Mezzanotte L, Löwik C, Hoehn M (2014) A multi-modality platform to image stem cell graft survival in the naïve and stroke-damaged mouse brain. Biomaterials 35:2218–2226
Christen T, Bolar DS, Zaharchuk G (2013) Imaging brain oxygenation with MRI using blood oxygenation approaches: methods, validation, and clinical applications. Am J Neuroradiol 34:1113–1123
The authors thank Dr. med. Esmeralda Heiden and Christa Josties for their valuable assistance in establishing the histology protocol used in this study. This work was supported by the Stiftung Charité (BIH_PRO_317), the DFG Cluster of Excellence NeuroCure (Exc 257), SFB 1116, DFG grants FL 303/6-1/TE 1209/1-1, and the Federal Ministry of Education and Research (BMBF; 01EO0801, Center for Stroke Research Berlin). Funders played no role in the design, analysis, or reporting of this study.
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The authors declare that they have no conflict of interest.
All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.
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Khalil, A.A., Mueller, S., Foddis, M. et al. Longitudinal 19F magnetic resonance imaging of brain oxygenation in a mouse model of vascular cognitive impairment using a cryogenic radiofrequency coil. Magn Reson Mater Phy 32, 105–114 (2019). https://doi.org/10.1007/s10334-018-0712-x
- Vascular cognitive impairment