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Murray DS, Stickel L, Boutelle M. Computational Modeling as a Tool to Drive the Development of a Novel, Chemical Device for Monitoring the Injured Brain and Body. ACS Chem Neurosci 2023; 14:3599-3608. [PMID: 37737666 PMCID: PMC10557062 DOI: 10.1021/acschemneuro.3c00063] [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: 02/01/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023] Open
Abstract
Real-time measurement of dynamic changes, occurring in the brain and other parts of the body, is useful for the detection and tracked progression of disease and injury. Chemical monitoring of such phenomena exists but is not commonplace, due to the penetrative nature of devices, the lack of continuous measurement, and the inflammatory responses that require pharmacological treatment to alleviate. Soft, flexible devices that more closely match the moduli and shape of monitored tissue and allow for surface microdialysis provide a viable alternative. Here, we show that computational modeling can be used to aid the development of such devices and highlight the considerations when developing a chemical monitoring probe in this way. These models pave the way for the development of a new class of chemical monitoring devices for monitoring neurotrauma, organs, and skin.
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Affiliation(s)
- De-Shaine Murray
- Department
of Bioengineering, Imperial College London SW7 2AZ, London, U.K.
- School
of Engineering and Applied Sciences, Yale
University, 06520, New Haven, Connecticut United States
| | - Laure Stickel
- Department
of Bioengineering, Imperial College London SW7 2AZ, London, U.K.
- Laboratoire
Physico-Chimie Curie, Institut Curie, 26 rue d’Ulm, 75005, Paris, France
| | - Martyn Boutelle
- Department
of Bioengineering, Imperial College London SW7 2AZ, London, U.K.
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2
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Qin H, Wang L, Yu B, Xing D, Su J, Bai Z. Effect of other venous access on cardiopulmonary resuscitation quality: A prospective, randomized, controlled trial. Biotechnol Genet Eng Rev 2023:1-11. [PMID: 37066803 DOI: 10.1080/02648725.2023.2199239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
This randomized controlled study aimed to prospectively evaluate the application effects of other venous access in patients undergoing cardiopulmonary resuscitation. A total of 212 patients who underwent respiratory and cardiac arrest were randomly divided into peripheral intravenous (IV) access group (IV group, n = 69), femoral vein catheterization group (FVC group, n = 72), and internal jugular vein catheterization group (IJVC group, n = 71). The puncture time, first administration time, pressure interruption time caused by the establishment of fluid pathway, endotracheal intubation time, complications, ROSC time, and ETCO2 were recorded. The time of establishing venous access was: IV<FVC<IJVC. The once puncture success rate of the FVC group was markedly higher than that in IV and IJVC groups (P < 0.01). There was no significant difference in ROSC time between the FVC, IV, and the IJVC group (P = 0.23). The ROSC time in the FVC group was higher than in the IV and IJVC groups (P < 0.01). The success rate of ROSC in the FVC group and IJVC group were better than that in the IV group (PVC>IJVC>IV, P = 0.04). There was no significant difference in EtCO2 between the FVC, IV group, and IJVC group (PVC>IJVC>IV, P = 0.17). Due to catheterization, the time of suspending chest compression in the FVC group was significantly lower than in the IJVC group (5s vs. 12s). The time of establishing an artificial airway in the IV (38s) and FVC (35s) group were significantly longer than that in IJVC (52s) group. Central venous catheterization is more effective than peripheral venous catheterization in cardiopulmonary resuscitation. Moreover, femoral vein access was more effective than internal jugular vein access.
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Affiliation(s)
- Hao Qin
- Emergency Department, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lantao Wang
- Emergency Department, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Bin Yu
- Emergency Department, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Dong Xing
- Emergency Department, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jie Su
- Emergency Department, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Zongjiang Bai
- Emergency Department, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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Nuh S, Numnuam A, Thavarungkul P, Phairatana T. A Novel Microfluidic-Based OMC-PEDOT-PSS Composite Electrochemical Sensor for Continuous Dopamine Monitoring. BIOSENSORS 2022; 13:68. [PMID: 36671903 PMCID: PMC9855352 DOI: 10.3390/bios13010068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/22/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Fast and precise analysis techniques using small sample volumes are required for next-generation clinical monitoring at the patient's bedside, so as to provide the clinician with relevant chemical data in real-time. The integration of an electrochemical sensor into a microfluidic chip allows for the achievement of real-time chemical monitoring due to the low consumption of analytes, short analysis time, low cost, and compact size. In this work, dopamine, used as a model, is an important neurotransmitter responsible for controlling various vital life functions. The aim is to develop a novel serpentine microfluidic-based electrochemical sensor, using a screen-printed electrode for continuous dopamine detection. The developed sensor employed the composite of ordered mesoporous carbon (OMC) and poly (3,4 ethylenedioxythiophene)-poly (styrene sulfonate) (PEDOT-PSS). The performance of a microfluidic, integrated with the sensor, was amperometrically evaluated using a computer-controlled microfluidic platform. The microfluidic-based dopamine sensor exhibited a sensitivity of 20.2 ± 0.6 μA μmol L-1, and a detection limit (LOD) of 21.6 ± 0.002 nmol L-1, with high selectivity. This microfluidic-based electrochemical sensor was successfully employed to determine dopamine continuously, which could overcome the problem of sensor fouling with more than 90% stability for over 24 h. This novel microfluidic sensor platform provides a powerful tool for the development of a continuous dopamine detection system for human clinical application.
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Affiliation(s)
- Sofwan Nuh
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
| | - Apon Numnuam
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Songkhla 90110, Thailand
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
| | - Panote Thavarungkul
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Songkhla 90110, Thailand
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
| | - Tonghathai Phairatana
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
- Institute of Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
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4
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Vammen L, Johannsen CM, Magnussen A, Povlsen A, Petersen SR, Azizi A, Pedersen M, Korshøj AR, Ringgaard S, Løfgren B, Andersen LW, Granfeldt A. Cerebral monitoring in a pig model of cardiac arrest with 48 h of intensive care. Intensive Care Med Exp 2022; 10:45. [PMID: 36284020 PMCID: PMC9596181 DOI: 10.1186/s40635-022-00475-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022] Open
Abstract
Background Neurological injury is the primary cause of death after out-of-hospital cardiac arrest. There is a lack of studies investigating cerebral injury beyond the immediate post-resuscitation phase in a controlled cardiac arrest experimental setting. Methods The aim of this study was to investigate temporal changes in measures of cerebral injury and metabolism in a cardiac arrest pig model with clinically relevant post-cardiac arrest intensive care. A cardiac arrest group (n = 11) underwent 7 min of no-flow and was compared with a sham group (n = 6). Pigs underwent intensive care with 24 h of hypothermia at 33 °C. Blood markers of cerebral injury, cerebral microdialysis, and intracranial pressure (ICP) were measured. After 48 h, pigs underwent a cerebral MRI scan. Data are presented as median [25th; 75th percentiles]. Results Return of spontaneous circulation was achieved in 7/11 pigs. Time to ROSC was 4.4 min [4.2; 10.9]. Both NSE and NfL increased over time (p < 0.001), and were higher in the cardiac arrest group at 48 h (NSE 4.2 µg/L [2.4; 6.1] vs 0.9 [0.7; 0.9], p < 0.001; NfL 63 ng/L [35; 232] vs 29 [21; 34], p = 0.02). There was no difference in ICP at 48 h (17 mmHg [14; 24] vs 18 [13; 20], p = 0.44). The cerebral lactate/pyruvate ratio had secondary surges in 3/7 cardiac arrest pigs after successful resuscitation. Apparent diffusion coefficient was lower in the cardiac arrest group in white matter cortex (689 × 10–6 mm2/s [524; 765] vs 800 [799; 815], p = 0.04) and hippocampus (854 [834; 910] vs 1049 [964; 1180], p = 0.03). N-Acetylaspartate was lower on MR spectroscopy in the cardiac arrest group (− 17.2 log [− 17.4; − 17.0] vs − 16.9 [− 16.9; − 16.9], p = 0.03). Conclusions We have developed a clinically relevant cardiac arrest pig model that displays cerebral injury as marked by NSE and NfL elevations, signs of cerebral oedema, and reduced neuron viability. Overall, the burden of elevated ICP was low in the cardiac arrest group. A subset of pigs undergoing cardiac arrest had persisting metabolic disturbances after successful resuscitation. Supplementary Information The online version contains supplementary material available at 10.1186/s40635-022-00475-2.
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Affiliation(s)
- Lauge Vammen
- grid.154185.c0000 0004 0512 597XDepartment of Anesthesiology and Intensive Care, Aarhus University Hospital, Palle Juul Jensens Blvd. 99 G304, 8200 Aarhus N, Denmark ,grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Cecilie Munch Johannsen
- grid.154185.c0000 0004 0512 597XDepartment of Anesthesiology and Intensive Care, Aarhus University Hospital, Palle Juul Jensens Blvd. 99 G304, 8200 Aarhus N, Denmark ,grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Andreas Magnussen
- grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Amalie Povlsen
- grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark ,grid.475435.4Department of Cardiothoracic Anesthesia, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Søren Riis Petersen
- grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Arezo Azizi
- grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Michael Pedersen
- grid.7048.b0000 0001 1956 2722Comparative Medicine Laboratory, Aarhus University, Aarhus N, Denmark
| | - Anders Rosendal Korshøj
- grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark ,grid.154185.c0000 0004 0512 597XDepartment of Neurosurgery, Aarhus University Hospital, Aarhus N, Denmark
| | - Steffen Ringgaard
- grid.7048.b0000 0001 1956 2722MR Research Centre, Aarhus University, Aarhus N, Denmark
| | - Bo Løfgren
- grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark ,grid.154185.c0000 0004 0512 597XResearch Center for Emergency Medicine, Aarhus University Hospital, Aarhus N, Denmark ,grid.415677.60000 0004 0646 8878Department of Medicine, Randers Regional Hospital, Randers, Denmark
| | - Lars W. Andersen
- grid.154185.c0000 0004 0512 597XDepartment of Anesthesiology and Intensive Care, Aarhus University Hospital, Palle Juul Jensens Blvd. 99 G304, 8200 Aarhus N, Denmark ,grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark ,grid.425869.40000 0004 0626 6125Prehospital Emergency Medical Services, Central Denmark Region, Aarhus N, Denmark
| | - Asger Granfeldt
- grid.154185.c0000 0004 0512 597XDepartment of Anesthesiology and Intensive Care, Aarhus University Hospital, Palle Juul Jensens Blvd. 99 G304, 8200 Aarhus N, Denmark ,grid.7048.b0000 0001 1956 2722Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
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Alimagham FC, Hutter D, Marco-García N, Gould E, Highland VH, Huefner A, Giorgi-Coll S, Killen MJ, Zakrzewska AP, Elliott SR, Carpenter KLH, Hutchinson PJ, Hutter T. Cerebral Microdialysate Metabolite Monitoring using Mid-infrared Spectroscopy. Anal Chem 2021; 93:11929-11936. [PMID: 34432431 PMCID: PMC8427560 DOI: 10.1021/acs.analchem.1c01149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 08/05/2021] [Indexed: 11/28/2022]
Abstract
The brains of patients suffering from traumatic brain-injury (TBI) undergo dynamic chemical changes in the days following the initial trauma. Accurate and timely monitoring of these changes is of paramount importance for improved patient outcome. Conventional brain-chemistry monitoring is performed off-line by collecting and manually transferring microdialysis samples to an enzymatic colorimetric bedside analyzer every hour, which detects and quantifies the molecules of interest. However, off-line, hourly monitoring means that any subhourly neurochemical changes, which may be detrimental to patients, go unseen and thus untreated. Mid-infrared (mid-IR) spectroscopy allows rapid, reagent-free, molecular fingerprinting of liquid samples, and can be easily integrated with microfluidics. We used mid-IR transmission spectroscopy to analyze glucose, lactate, and pyruvate, three relevant brain metabolites, in the extracellular brain fluid of two TBI patients, sampled via microdialysis. Detection limits of 0.5, 0.2, and 0.1 mM were achieved for pure glucose, lactate, and pyruvate, respectively, in perfusion fluid using an external cavity-quantum cascade laser (EC-QCL) system with an integrated transmission flow-cell. Microdialysates were collected hourly, then pooled (3-4 h), and measured consecutively using the standard ISCUSflex analyzer and the EC-QCL system. There was a strong correlation between the compound concentrations obtained using the conventional bedside analyzer and the acquired mid-IR absorbance spectra, where a partial-least-squares regression model was implemented to compute concentrations. This study demonstrates the potential utility of mid-IR spectroscopy for continuous, automated, reagent-free, and online monitoring of the dynamic chemical changes in TBI patients, allowing a more timely response to adverse brain metabolism and consequently improving patient outcomes.
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Affiliation(s)
- Farah C. Alimagham
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Dan Hutter
- Department
of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Núria Marco-García
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Emma Gould
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Victoria H. Highland
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
| | - Anna Huefner
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
| | - Susan Giorgi-Coll
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Monica J. Killen
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Agnieszka P. Zakrzewska
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Stephen R. Elliott
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
| | - Keri L. H. Carpenter
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Peter J. Hutchinson
- Division
of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Tanya Hutter
- Materials
Science and Engineering Program and Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712, United States
- Walker
Department of Mechanical Engineering, The
University of Texas at Austin, Austin, Texas 78712, United States
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Brain neurochemical monitoring. Biosens Bioelectron 2021; 189:113351. [PMID: 34049083 DOI: 10.1016/j.bios.2021.113351] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 05/05/2021] [Accepted: 05/13/2021] [Indexed: 02/08/2023]
Abstract
Brain neurochemical monitoring aims to provide continuous and accurate measurements of brain biomarkers. It has enabled significant advances in neuroscience for application in clinical diagnostics, treatment, and prevention of brain diseases. Microfabricated electrochemical and optical spectroscopy sensing technologies have been developed for precise monitoring of brain neurochemicals. Here, a comprehensive review on the progress of sensing technologies developed for brain neurochemical monitoring is presented. The review provides a summary of the widely measured clinically relevant neurochemicals and commonly adopted recognition technologies. Recent advances in sampling, electrochemistry, and optical spectroscopy for brain neurochemical monitoring are highlighted and their application are discussed. Existing gaps in current technologies and future directions to design industry standard brain neurochemical sensing devices for clinical applications are addressed.
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Exercise preconditioning ameliorates cognitive impairment and anxiety-like behavior via regulation of dopamine in ischemia rats. Physiol Behav 2021; 233:113353. [PMID: 33571546 DOI: 10.1016/j.physbeh.2021.113353] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/31/2020] [Accepted: 02/05/2021] [Indexed: 12/14/2022]
Abstract
Cognitive impairment and anxiety are common health problems in acute ischemic stroke patients. Meanwhile, dopamine in the striatal brain region is significantly increased during the acute phase of cerebral ischemia. Besides, the studies shown that striatum and change of striatal dopamine are associated with learning and memory and anxiety. Further, physical exercise has been shown to improve neurocognitive and emotional function in animal models and patients with cerebral ischemia. However, the exact mechanism underlying this effect is unclear. The purpose of this research is to explore the effect of pre-ischemic voluntary wheel running on levels of striatal dopamine, cognition and anxiety in cerebral ischemia rats. METHODS 48 adult male Sprague-Dawley rats were enrolled in this study and divided randomly in following 6 groups: sham group (S group, n = 8), ischemia group (I group, n = 8), 1 week wheel running group (1R group), 4 weeks wheel running group (4R group), 1 week pre-ischemia wheel running group (1RI group, n = 8) and 4 weeks pre-ischemia wheel running group (4RI group, n = 8). After training, cerebral ischemia was induced by permanent bilateral common carotid artery ligation (2-VO) operation. Microdialysis was used to collect dialysates from the striatum immediately from 30 min before ischemia to 90 min after ischemia. High-performance liquid chromatography-electrochemical detection system (HPLC) was used to determine the content of dopamine in the dialysates. Passive avoidance and elevated plus maze test were used to test neurocognitive function 24 h after 2-VO cerebral ischemia. RESULTS As compare with the constant striatal dopamine level of S group, the striatal dopamine level in I group after ischemia showed a trend of rapid increasing and reached maximum value at the 20 min (P<0.001), then decreased gradually. The striatal dopamine level in 1RI and 4RI group showed the trend were similar to I group, but the increasing magnitude was attenuated. A comparison of the basal striatal dopamine level in 4 groups found that the basal dopamine level in 1RI and 4RI group were higher than S and I group (P<0.001). In passive avoidance task, the retention latency of I group was significantly shorter than S group (P<0.001), and the retention latency of the 1RI, 1R and 4R, 4RI group were longer than I group (P<0.001), there was no significant difference in S, 1RI, 1R, 4R and 4RI group (P>0.05). In elevated plus maze test, the time and entrance numbers of open arms in I group were significantly less than S group (P<0.05), but these indices were no significant difference in S, 1RI, 1R, 4RI and 4RI group. CONCLUSION According to our results, 1 or 4 weeks pre-ischemia wheel running can significantly increase the basal dopamine level, attenuate the increase of striatal dopamine induced by cerebral ischemia and improve neurocognitive function in ischemia rats.
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