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Crayen MA, Kagan I, Esghaei M, Hoehl D, Thomas U, Prückl R, Schaffelhofer S, Treue S. Using camera-guided electrode microdrive navigation for precise 3D targeting of macaque brain sites. PLoS One 2024; 19:e0301849. [PMID: 38805512 PMCID: PMC11132476 DOI: 10.1371/journal.pone.0301849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/20/2024] [Indexed: 05/30/2024] Open
Abstract
Spatial accuracy in electrophysiological investigations is paramount, as precise localization and reliable access to specific brain regions help the advancement of our understanding of the brain's complex neural activity. Here, we introduce a novel, multi camera-based, frameless neuronavigation technique for precise, 3-dimensional electrode positioning in awake monkeys. The investigation of neural functions in awake primates often requires stable access to the brain with thin and delicate recording electrodes. This is usually realized by implanting a chronic recording chamber onto the skull of the animal that allows direct access to the dura. Most recording and positioning techniques utilize this implanted recording chamber as a holder of the microdrive or to hold a grid. This in turn reduces the degrees of freedom in positioning. To solve this problem, we require innovative, flexible, but precise tools for neuronal recordings. We instead mount the electrode microdrive above the animal on an arch, equipped with a series of translational and rotational micromanipulators, allowing movements in all axes. Here, the positioning is controlled by infrared cameras tracking the location of the microdrive and the monkey, allowing precise and flexible trajectories. To verify the accuracy of this technique, we created iron deposits in the tissue that could be detected by MRI. Our results demonstrate a remarkable precision with the confirmed physical location of these deposits averaging less than 0.5 mm from their planned position. Pilot electrophysiological recordings additionally demonstrate the accuracy and flexibility of this method. Our innovative approach could significantly enhance the accuracy and flexibility of neural recordings, potentially catalyzing further advancements in neuroscientific research.
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Affiliation(s)
- Max Arwed Crayen
- Cognitive Neuroscience Laboratory, German Primate Center, Goettingen, Lower Saxony, Germany
- Faculty of Biology and Psychology, Georg-August University, Goettingen, Lower Saxony, Germany
- International Max Planck Research School for Neurosciences, Georg-August University, Goettingen, Lower Saxony, Germany
| | - Igor Kagan
- Cognitive Neuroscience Laboratory, German Primate Center, Goettingen, Lower Saxony, Germany
- Leibniz ScienceCampus Primate Cognition, Goettingen, Lower Saxony, Germany
| | - Moein Esghaei
- Cognitive Neuroscience Laboratory, German Primate Center, Goettingen, Lower Saxony, Germany
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
| | - Dirk Hoehl
- Thomas RECORDING GmbH, Giessen, Hesse, Germany
| | - Uwe Thomas
- Thomas RECORDING GmbH, Giessen, Hesse, Germany
| | | | | | - Stefan Treue
- Cognitive Neuroscience Laboratory, German Primate Center, Goettingen, Lower Saxony, Germany
- Faculty of Biology and Psychology, Georg-August University, Goettingen, Lower Saxony, Germany
- Leibniz ScienceCampus Primate Cognition, Goettingen, Lower Saxony, Germany
- Bernstein Center for Computational Neuroscience, Goettingen, Lower Saxony, Germany
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Qiu L, Xu E, Chambule S, LaTourette P, Dyer CD, Wallace CK, Donocoff R, Wilson JM, Lucas TH, Chen HI. Magnetic Resonance Imaging-Guided Frameless Stereotactic Injections of the Bilateral Cerebellar Dentate Nuclei in Nonhuman Primates: Technical Note. Oper Neurosurg (Hagerstown) 2024:01787389-990000000-01040. [PMID: 38310346 DOI: 10.1227/ons.0000000000001050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/20/2023] [Indexed: 02/05/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Nonhuman primates (NHPs) are important preclinical models for evaluating therapeutics because of their anatomophysiological similarities to humans, and can be especially useful for testing new delivery targets. With the growing promise of cell and gene therapies for the treatment of neurological diseases, it is important to ensure the accurate and safe delivery of these agents to target structures in the brain. However, a standard guideline or method has not been developed for stereotactic targeting in NHPs. In this article, we describe the safe use of a magnetic resonance imaging-guided frameless stereotactic system to target bilateral cerebellar dentate nuclei for accurate, real-time delivery of viral vector in NHPs. METHODS Seventeen rhesus macaques (Macaca mulatta) underwent stereotactic surgery under real-time MRI guidance using the ClearPoint® system. Bilateral cerebellar dentate nuclei were targeted through a single parietal entry point with a transtentorial approach. Fifty microliters of contrast-impregnated infusate was delivered to each dentate nucleus, and adjustments were made as necessary according to real-time MRI monitoring of delivery. Perioperative clinical outcomes and postoperative volumes of distribution were recorded. RESULTS All macaques underwent bilateral surgery successfully. Superficial pin site infection occurred in 4/17 (23.5%) subjects, which resolved with antibiotics. Two episodes of transient neurological deficit (anisocoria and unilateral weakness) were recorded, which did not require additional postoperative treatment and resolved over time. Volume of distribution of infusate achieved satisfactory coverage of target dentate nuclei, and only 1 incidence (2.9%) of cerebrospinal fluid penetration was recorded. Mean volume of distribution was 161.22 ± 39.61 mm3 (left, 173.65 ± 48.29; right, 148.80 ± 23.98). CONCLUSION MRI-guided frameless stereotactic injection of bilateral cerebellar dentate nuclei in NHPs is safe and feasible. The use of this technique enables real-time modification of the surgical plan to achieve adequate target coverage and can be readily translated to clinical use.
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Affiliation(s)
- Liming Qiu
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Emily Xu
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sydney Chambule
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Philip LaTourette
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Current Affiliation: Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Cecilia D Dyer
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Chelsea K Wallace
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Rachel Donocoff
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Current Affiliation: Bristol Myers Squibb, Princeton, New Jersey, USA
| | - James M Wilson
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Timothy H Lucas
- Department of Neurosurgery, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - H Isaac Chen
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department of Surgery, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA
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Mahmoudian B, Dalal H, Lau J, Corrigan B, Abbas M, Barker K, Rankin A, Chen ECS, Peters T, Martinez-Trujillo JC. A method for chronic and semi-chronic microelectrode array implantation in deep brain structures using image guided neuronavigation. J Neurosci Methods 2023; 397:109948. [PMID: 37572883 DOI: 10.1016/j.jneumeth.2023.109948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/17/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
BACKGROUND Accurate targeting of brain structures for in-vivo electrophysiological recordings is essential for basic as well as clinical neuroscience research. Although methodologies for precise targeting and recording from the cortical surface are abundant, such protocols are scarce for deep brain structures. NEW METHOD We have incorporated stable fiducial markers within a custom cranial cap for improved image-guided neuronavigation targeting of subcortical structures in macaque monkeys. Anchor bolt chambers allowed for a minimally invasive entrance into the brain for chronic recordings. A 3D-printed microdrive allowed for semi-chronic applications. RESULTS We achieved an average Euclidean targeting error of 1.6 mm and a radial error of 1.2 mm over three implantations in two animals. Chronic and semi-chronic implantations allowed for recording of extracellular neuronal activity, with single-neuron activity examples shown from one macaque monkey. COMPARISON WITH EXISTING METHOD(S) Traditional stereotactic methods ignore individual anatomical variability. Our targeting approach allows for a flexible, subject-specific surgical plan with targeting errors lower than what is reported in humans, and equal to or lower than animal models using similar methods. Utilizing an anchor bolt as a chamber reduced the craniotomy size needed for electrode implantation, compared to conventional large access chambers which are prone to infection. Installation of an in-house, 3D-printed, screw-to-mount mechanical microdrive is in contrast to existing semi-chronic methods requiring fabrication, assembly, and installation of complex parts. CONCLUSIONS Leveraging commercially available tools for implantation, our protocol decreases the risk of infection from open craniotomies, and improves the accuracy of chronic electrode implantations targeting deep brain structures in large animal models.
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Affiliation(s)
- Borna Mahmoudian
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Robarts Research Institute and Brain and Mind Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | - Hitarth Dalal
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Robarts Research Institute and Brain and Mind Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | - Jonathan Lau
- Department of Clinical Neurological Sciences, Division of Neurosurgery, London Health Sciences Centre, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; School of Biomedical Engineering, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | - Benjamin Corrigan
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Robarts Research Institute and Brain and Mind Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | - Mohamad Abbas
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Robarts Research Institute and Brain and Mind Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Department of Clinical Neurological Sciences, Division of Neurosurgery, London Health Sciences Centre, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | | | - Adam Rankin
- Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | - Elvis C S Chen
- School of Biomedical Engineering, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Department of Medical Biophysics, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Lawson Health Research Institute, 750 Base Line Road East Suite 300, London, ON N6C2R5, Canada; Department of Electrical and Computer Engineering, Thompson Engineering Building, University of Western Ontario, London, ON, N6A 5B9, Canada
| | - Terry Peters
- Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Center for Functional and Metabolic Mapping, Robarts Research Institute, Department of Medical Biophysics and Brain and Mind Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada
| | - Julio C Martinez-Trujillo
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Robarts Research Institute and Brain and Mind Institute, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 5B7, Canada; Lawson Health Research Institute, 750 Base Line Road East Suite 300, London, ON N6C2R5, Canada.
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