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Abi Zeid Daou Y, Watanabe N, Lidouren F, Bois A, Faucher E, Huet H, Hutin A, Jendoubi A, Surenaud M, Hue S, Nadeau M, Perrotto S, Libardi M, Ghaleh B, Micheau P, Bruneval P, Cariou A, Kohlhauer M, Tissier R. Ultrafast Cooling With Total Liquid Ventilation Mitigates Early Inflammatory Response and Offers Neuroprotection in a Porcine Model of Cardiac Arrest. J Am Heart Assoc 2024; 13:e035617. [PMID: 39158568 DOI: 10.1161/jaha.124.035617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 07/16/2024] [Indexed: 08/20/2024]
Abstract
BACKGROUND Brain injury is one of the most serious complications after cardiac arrest (CA). To prevent this phenomenon, rapid cooling with total liquid ventilation (TLV) has been proposed in small animal models of CA (rabbits and piglets). Here, we aimed to determine whether hypothermic TLV can also offer neuroprotection and mitigate cerebral inflammatory response in large animals. METHODS AND RESULTS Anesthetized pigs were subjected to 14 minutes of ventricular fibrillation followed by cardiopulmonary resuscitation. After return of spontaneous circulation, animals were randomly subjected to normothermia (control group, n=8) or ultrafast cooling with TLV (TLV group, n=8). In the latter group, TLV was initiated within a window of 15 minutes after return of spontaneous circulation and allowed to reduce tympanic, esophageal, and bladder temperature to the 32 to 34 °C range within 30 minutes. After 45 minutes of TLV, gas ventilation was resumed, and hypothermia was maintained externally until 3 hours after CA, before rewarming using heat pads (0.5 °C-1 °C/h). After an additional period of progressive rewarming for 3 hours, animals were euthanized for brain withdrawal and histological analysis. At the end of the follow-up (ie, 6 hours after CA), histology showed reduced brain injury as witnessed by the reduced number of Fluroro-Jade C-positive cerebral degenerating neurons in TLV versus control. IL (interleukin)-1ra and IL-8 levels were also significantly reduced in the cerebrospinal fluid in TLV versus control along with cerebral infiltration by CD3+ cells. Conversely, circulating levels of cytokines were not different among groups, suggesting a discrepancy between local and systemic inflammatory levels. CONCLUSIONS Ultrafast cooling with TLV mitigates neuroinflammation and attenuates acute brain lesions in the early phase following resuscitation in large animals subjected to CA.
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Affiliation(s)
- Yara Abi Zeid Daou
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Naoto Watanabe
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Fanny Lidouren
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Antoine Bois
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
- Service de Médecine Intensive-Réanimation Hôpitaux Universitaires Paris Centre, Hopital Cochin Paris France
| | - Estelle Faucher
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Hélène Huet
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Alice Hutin
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
- SAMU de Paris-ICU, Necker University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris Paris France
| | - Ali Jendoubi
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Mathieu Surenaud
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Vaccine Research Institute, Univ Paris Est-Creteil Creteil France
| | - Sophie Hue
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Vaccine Research Institute, Univ Paris Est-Creteil Creteil France
| | | | | | | | - Bijan Ghaleh
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | | | | | - Alain Cariou
- Service de Médecine Intensive-Réanimation Hôpitaux Universitaires Paris Centre, Hopital Cochin Paris France
| | - Matthias Kohlhauer
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
| | - Renaud Tissier
- Univ Paris Est Créteil, INSERM, IMRB Créteil France
- Ecole Nationale Vétérinaire d'Alfort, IMRB, AfterROSC Network Maisons-Alfort France
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2
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Morin C, Simard É, See W, Sage M, Imane R, Nadeau C, Samson N, Lavoie PM, Chabot B, Marouan S, Tremblay S, Praud JP, Micheau P, Fortin-Pellerin É. Total liquid ventilation in an ovine model of extreme prematurity: a randomized study. Pediatr Res 2024; 95:974-980. [PMID: 37833531 DOI: 10.1038/s41390-023-02841-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 08/16/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023]
Abstract
BACKGROUND This study aimed at comparing cardiorespiratory stability during total liquid ventilation (TLV)-prior to lung aeration-with conventional mechanical ventilation (CMV) in extremely preterm lambs during the first 6 h of life. METHODS 23 lambs (11 females) were born by c-section at 118-120 days of gestational age (term = 147 days) to receive 6 h of TLV or CMV from birth. Lung samples were collected for RNA and histology analyses. RESULTS The lambs under TLV had higher and more stable arterial oxygen saturation (p = 0.001) and cerebral tissue oxygenation (p = 0.02) than the lambs in the CMV group in the first 10 min of transition to extrauterine life. Although histological assessment of the lungs was similar between the groups, a significant upregulation of IL-1a, IL-6 and IL-8 RNA in the lungs was observed after TLV. CONCLUSIONS Total liquid ventilation allowed for remarkably stable transition to extrauterine life in an extremely preterm lamb model. Refinement of our TLV prototype and ventilation algorithms is underway to address specific challenges in this population, such as minimizing tracheal deformation during the active expiration. IMPACT Total liquid ventilation allows for remarkably stable transition to extrauterine life in an extremely preterm lamb model. Total liquid ventilation is systematically achievable over the first 6 h of life in the extremely premature lamb model. This study provides additional incentive to pursue further investigation of total liquid ventilation as a transition tool for the most extreme preterm neonates.
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Affiliation(s)
- Christophe Morin
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Émile Simard
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Wendy See
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Michaël Sage
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Roqaya Imane
- Department of Pediatrics, Université de Montréal, Montreal, QC, Canada
| | - Charlène Nadeau
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Nathalie Samson
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Pascal M Lavoie
- Division of Neonatology, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Benoît Chabot
- Department of Microbiology and Infectiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Sofia Marouan
- Department of Pathology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Sophie Tremblay
- Department of Pediatrics, Université de Montréal, Montreal, QC, Canada
| | - Jean-Paul Praud
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
- Department of Pediatrics, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Philippe Micheau
- Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Étienne Fortin-Pellerin
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada.
- Department of Pediatrics, Université de Sherbrooke, Sherbrooke, QC, Canada.
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3
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Li G, Xu X, Zuo YY. Biophysical function of pulmonary surfactant in liquid ventilation. Biophys J 2023; 122:3099-3107. [PMID: 37353933 PMCID: PMC10432212 DOI: 10.1016/j.bpj.2023.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/18/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023] Open
Abstract
Liquid ventilation is a mechanical ventilation technique in which the entire or part of the lung is filled with oxygenated perfluorocarbon (PFC) liquids rather than air in conventional mechanical ventilation. Despite its many ideal biophysicochemical properties for assisting liquid breathing, a general misconception about PFC is to use it as a replacement for pulmonary surfactant. Because of the high PFC-water interfacial tension (59 mN/m), pulmonary surfactant is indispensable in liquid ventilation to increase lung compliance. However, the biophysical function of pulmonary surfactant in liquid ventilation is still unknown. Here, we have studied the adsorption and dynamic surface activity of a natural surfactant preparation, Infasurf, at the PFC-water interface using constrained drop surfactometry. The constrained drop surfactometry is capable of simulating the intra-alveolar microenvironment of liquid ventilation under physiologically relevant conditions. It was found that Infasurf adsorbed to the PFC-water interface reduces the PFC-water interfacial tension from 59 mN/m to an equilibrium value of 9 mN/m within seconds. Atomic force microscopy revealed that after de novo adsorption, Infasurf forms multilayered structures at the PFC-water interface with an average thickness of 10-20 nm, depending on the adsorbing surfactant concentration. It was found that the adsorbed Infasurf film is capable of regulating the interfacial tension of the PFC-water interface within a narrow range, between ∼12 and ∼1 mN/m, during dynamic compression-expansion cycles that mimic liquid ventilation. These findings have novel implications in understanding the physiological and biophysical functions of the pulmonary surfactant film at the PFC-water interface, and may offer new translational insights into the development of liquid ventilation and liquid breathing techniques.
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Affiliation(s)
- Guangle Li
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii
| | - Xiaojie Xu
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii
| | - Yi Y Zuo
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii; Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
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4
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Langmuir-Blodgett transfer from the oil-water interface. J Colloid Interface Sci 2023; 630:21-27. [DOI: 10.1016/j.jcis.2022.10.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/23/2022] [Accepted: 10/14/2022] [Indexed: 11/21/2022]
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Joseph JM, Gigliobianco MR, Firouzabadi BM, Censi R, Di Martino P. Nanotechnology as a Versatile Tool for 19F-MRI Agent's Formulation: A Glimpse into the Use of Perfluorinated and Fluorinated Compounds in Nanoparticles. Pharmaceutics 2022; 14:382. [PMID: 35214114 PMCID: PMC8874484 DOI: 10.3390/pharmaceutics14020382] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/28/2022] [Accepted: 02/02/2022] [Indexed: 02/04/2023] Open
Abstract
Simultaneously being a non-radiative and non-invasive technique makes magnetic resonance imaging (MRI) one of the highly sought imaging techniques for the early diagnosis and treatment of diseases. Despite more than four decades of research on finding a suitable imaging agent from fluorine for clinical applications, it still lingers as a challenge to get the regulatory approval compared to its hydrogen counterpart. The pertinent hurdle is the simultaneous intrinsic hydrophobicity and lipophobicity of fluorine and its derivatives that make them insoluble in any liquids, strongly limiting their application in areas such as targeted delivery. A blossoming technique to circumvent the unfavorable physicochemical characteristics of perfluorocarbon compounds (PFCs) and guarantee a high local concentration of fluorine in the desired body part is to encapsulate them in nanosystems. In this review, we will be emphasizing different types of nanocarrier systems studied to encapsulate various PFCs and fluorinated compounds, headway to be applied as a contrast agent (CA) in fluorine-19 MRI (19F MRI). We would also scrutinize, especially from studies over the last decade, the different types of PFCs and their specific applications and limitations concerning the nanoparticle (NP) system used to encapsulate them. A critical evaluation for future opportunities would be speculated.
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Affiliation(s)
- Joice Maria Joseph
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (J.M.J.); (B.M.F.); (P.D.M.)
| | | | | | - Roberta Censi
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (J.M.J.); (B.M.F.); (P.D.M.)
| | - Piera Di Martino
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (J.M.J.); (B.M.F.); (P.D.M.)
- Dipartimento di Farmacia, Università “G. D’Annunzio” Chieti e Pescara, 66100 Chieti, Italy
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6
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Bauer K, Janke T, Schwarze R. Oxygen transport during liquid ventilation: an in vitro study. Sci Rep 2022; 12:1244. [PMID: 35075158 PMCID: PMC8786849 DOI: 10.1038/s41598-022-05105-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 01/06/2022] [Indexed: 11/10/2022] Open
Abstract
An in vitro experiment on the dissolved oxygen transport during liquid ventilation by means of measuring global oxygen concentration fields is presented within this work. We consider the flow in an idealized four generation model of the human airways in a range of peak Reynolds numbers of \documentclass[12pt]{minimal}
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\begin{document}$$\alpha = 3$$\end{document}α=3–5. Fluorescence quenching measurements were employed in order to visualize and quantify the oxygen distribution with high temporal and spatial resolution during the breathing cycle. Measurements with varying tidal volumes and oscillating frequencies reveal short living times of characteristic concentration patterns for all parameter variations. Similarities to typical velocity patterns in similar lung models persist only in early phases during each cycle. Concentration gradients are quickly homogenized by secondary motions within the lung model. A strong dependency of peak oxygen concentration on tidal volume is observed with considerably higher relative concentrations for higher tidal volumes.
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Affiliation(s)
- Katrin Bauer
- Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Freiberg, Germany.
| | | | - Rüdiger Schwarze
- Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Freiberg, Germany
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7
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Krafft MP, Riess JG. Therapeutic oxygen delivery by perfluorocarbon-based colloids. Adv Colloid Interface Sci 2021; 294:102407. [PMID: 34120037 DOI: 10.1016/j.cis.2021.102407] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 03/18/2021] [Accepted: 03/25/2021] [Indexed: 02/06/2023]
Abstract
After the protocol-related indecisive clinical trial of Oxygent, a perfluorooctylbromide/phospholipid nanoemulsion, in cardiac surgery, that often unduly assigned the observed untoward effects to the product, the development of perfluorocarbon (PFC)-based O2 nanoemulsions ("blood substitutes") has come to a low. Yet, significant further demonstrations of PFC O2-delivery efficacy have continuously been reported, such as relief of hypoxia after myocardial infarction or stroke; protection of vital organs during surgery; potentiation of O2-dependent cancer therapies, including radio-, photodynamic-, chemo- and immunotherapies; regeneration of damaged nerve, bone or cartilage; preservation of organ grafts destined for transplantation; and control of gas supply in tissue engineering and biotechnological productions. PFC colloids capable of augmenting O2 delivery include primarily injectable PFC nanoemulsions, microbubbles and phase-shift nanoemulsions. Careful selection of PFC and other colloid components is critical. The basics of O2 delivery by PFC nanoemulsions will be briefly reminded. Improved knowledge of O2 delivery mechanisms has been acquired. Advanced, size-adjustable O2-delivering nanoemulsions have been designed that have extended room-temperature shelf-stability. Alternate O2 delivery options are being investigated that rely on injectable PFC-stabilized microbubbles or phase-shift PFC nanoemulsions. The latter combine prolonged circulation in the vasculature, capacity for penetrating tumor tissues, and acute responsiveness to ultrasound and other external stimuli. Progress in microbubble and phase-shift emulsion engineering, control of phase-shift activation (vaporization), understanding and control of bubble/ultrasound/tissue interactions is discussed. Control of the phase-shift event and of microbubble size require utmost attention. Further PFC-based colloidal systems, including polymeric micelles, PFC-loaded organic or inorganic nanoparticles and scaffolds, have been devised that also carry substantial amounts of O2. Local, on-demand O2 delivery can be triggered by external stimuli, including focused ultrasound irradiation or tumor microenvironment. PFC colloid functionalization and targeting can help adjust their properties for specific indications, augment their efficacy, improve safety profiles, and expand the range of their indications. Many new medical and biotechnological applications involving fluorinated colloids are being assessed, including in the clinic. Further uses of PFC-based colloidal nanotherapeutics will be briefly mentioned that concern contrast diagnostic imaging, including molecular imaging and immune cell tracking; controlled delivery of therapeutic energy, as for noninvasive surgical ablation and sonothrombolysis; and delivery of drugs and genes, including across the blood-brain barrier. Even when the fluorinated colloids investigated are designed for other purposes than O2 supply, they will inevitably also carry and deliver a certain amount of O2, and may thus be considered for O2 delivery or co-delivery applications. Conversely, O2-carrying PFC nanoemulsions possess by nature a unique aptitude for 19F MR imaging, and hence, cell tracking, while PFC-stabilized microbubbles are ideal resonators for ultrasound contrast imaging and can undergo precise manipulation and on-demand destruction by ultrasound waves, thereby opening multiple theranostic opportunities.
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Affiliation(s)
- Marie Pierre Krafft
- University of Strasbourg, Institut Charles Sadron (CNRS), 23 rue du Loess, 67034 Strasbourg, France.
| | - Jean G Riess
- Harangoutte Institute, 68160 Ste Croix-aux-Mines, France
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8
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See W, Morin C, Sage M, Stowe S, Gohier C, Nault S, Micheau P, Adler A, Fortin-Pellerin É. Air distribution within the lungs after total liquid ventilation in a neonatal ovine model. Respir Physiol Neurobiol 2021; 290:103666. [PMID: 33798788 DOI: 10.1016/j.resp.2021.103666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To gain insight into the total and regional lung aeration dynamics at the transition from total liquid ventilation (TLV) to conventional mechanical ventilation (GV). METHODS Neonatal lambs received either TLV for 4 h followed by GV (n = 15) or GV only (n = 11, controls). Monitoring was performed in the prone position with both videofluoroscopy and electrical impedance tomography (EIT) for the first 10 min of the transition. RESULTS Total and regional end-expiratory lung volumes were stable throughout the transition (p < 0.05). The percentage of tidal volume, liquid and/or gaseous, distributed to the different regions was stable (p < 0.05). Radiopacity of the nondependent regions markedly decreased at end-expiration (p < 0.01), reflecting the progressive transition to a gaseous end-expiratory lung volume. CONCLUSION Weaning to GV did not increase total or regional lung volumes, suggesting that the risk of overdistention was not increased. Residual perfluorocarbon in the dependent lung regions might account for the high O2 needs we observed in the first minutes of GV after TLV.
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Affiliation(s)
- Wendy See
- Department of Pharmacology-Physiology, Université de Sherbrooke, 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada.
| | - Christophe Morin
- Department of Pharmacology-Physiology, Université de Sherbrooke, 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada.
| | - Michaël Sage
- Department of Pharmacology-Physiology, Université de Sherbrooke, 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada.
| | - Symon Stowe
- Department of Computer Engineering, Carleton University, 1125 Colonel By Dr, Ottawa, K1S 5B6, ON, Canada.
| | - Catherine Gohier
- Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke. 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada.
| | - Stéphanie Nault
- Department of Pharmacology-Physiology, Université de Sherbrooke, 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada.
| | - Philippe Micheau
- Department of Mechanical Engineering, Université de Sherbrooke. 2500 Boulevard de l'Université, Sherbrooke, QC, J1K 2R1, Canada.
| | - Andy Adler
- Department of Computer Engineering, Carleton University, 1125 Colonel By Dr, Ottawa, K1S 5B6, ON, Canada.
| | - Étienne Fortin-Pellerin
- Department of Pharmacology-Physiology, Université de Sherbrooke, 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada; Department of Pediatrics, Université de Sherbrooke. 3001, 12(e)Avenue Nord, Sherbrooke, QC, J1H 5H3, Canada.
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9
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Boissady E, Kohlhauer M, Lidouren F, Hocini H, Lefebvre C, Chateau‐Jouber S, Mongardon N, Deye N, Cariou A, Micheau P, Ghaleh B, Tissier R. Ultrafast Hypothermia Selectively Mitigates the Early Humoral Response After Cardiac Arrest. J Am Heart Assoc 2020; 9:e017413. [PMID: 33198571 PMCID: PMC7763769 DOI: 10.1161/jaha.120.017413] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/18/2020] [Indexed: 12/17/2022]
Abstract
Background Total liquid ventilation (TLV) has been shown to prevent neurological damage though ultrafast cooling in animal models of cardiac arrest. We investigated whether its neuroprotective effect could be explained by mitigation of early inflammatory events. Methods and Results Rabbits were submitted to 10 minutes of ventricular fibrillation. After resuscitation, they underwent normothermic follow-up (control) or ultrafast cooling by TLV and hypothermia maintenance for 3 hours (TLV). Immune response, survival, and neurological dysfunction were assessed for 3 days. TLV improved neurological recovery and reduced cerebral lesions and leukocyte infiltration as compared with control (eg, neurological dysfunction score=34±6 versus 66±6% at day 1, respectively). TLV also significantly reduced interleukin-6 blood levels during the hypothermic episode (298±303 versus 991±471 pg/mL in TLV versus control at 3 hours after resuscitation, respectively), but not after rewarming (752±563 versus 741±219 pg/mL in TLV versus control at 6 hours after resuscitation, respectively). In vitro assays confirmed the high temperature sensitivity of interleukin-6 secretion. Conversely, TLV did not modify circulating high-mobility group box 1 levels or immune cell recruitment into the peripheral circulation. The link between interleukin-6 early transcripts (<8 hours) and neurological outcome in a subpopulation of the previously described Epo-ACR-02 (High Dose of Erythropoietin Analogue After Cardiac Arrest) trial confirmed the importance of this cytokine at the early stages as compared with delayed stages (>8 hours). Conclusions The neuroprotective effect of hypothermic TLV was associated with a mitigation of humoral interleukin-6 response. A temperature-dependent attenuation of immune cell reactivity during the early phase of the post-cardiac arrest syndrome could explain the potent effect of rapid hypothermia. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT00999583.
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Affiliation(s)
- Emilie Boissady
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
| | - Matthias Kohlhauer
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
| | - Fanny Lidouren
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
| | - Hakim Hocini
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
- Vaccine Research InstituteUniv Paris Est‐CreteilCreteilFrance
| | - Cécile Lefebvre
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
- Vaccine Research InstituteUniv Paris Est‐CreteilCreteilFrance
| | | | - Nicolas Mongardon
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
- Service d’anesthésie‐Réanimation ChirurgicaleDMU CAREAPHPHôpitaux Universitaires Henri MondorCréteilFrance
| | - Nicolas Deye
- Medical ICUInserm U942Lariboisiere HospitalAPHPParisFrance
| | - Alain Cariou
- Service de Réanimation MédicaleHôpitaux Universitaires Paris CentreHopital CochinParisFrance
| | | | - Bijan Ghaleh
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
| | - Renaud Tissier
- INSERMIMRBEcole Nationale Vétérinaire d’AlfortUniv Paris Est CreteilCreteilFrance
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Shoemaker JT, Zhang W, Atlas SI, Bryan RA, Inman SW, Vukasinovic J. A 3D Cell Culture Organ-on-a-Chip Platform With a Breathable Hemoglobin Analogue Augments and Extends Primary Human Hepatocyte Functions in vitro. Front Mol Biosci 2020; 7:568777. [PMID: 33195413 PMCID: PMC7645268 DOI: 10.3389/fmolb.2020.568777] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/22/2020] [Indexed: 12/17/2022] Open
Abstract
Remarkable advances in three-dimensional (3D) cell cultures and organ-on-a-chip technologies have opened the door to recapitulate complex aspects of human physiology, pathology, and drug responses in vitro. The challenges regarding oxygen delivery, throughput, assay multiplexing, and experimental complexity are addressed to ensure that perfused 3D cell culture organ-on-a-chip models become a routine research tool adopted by academic and industrial stakeholders. To move the field forward, we present a throughput-scalable organ-on-a-chip insert system that requires a single tube to operate 48 statistically independent 3D cell culture organ models. Then, we introduce in-well perfusion to circumvent the loss of cell signaling and drug metabolites in otherwise one-way flow of perfusate. Further, to augment the relevancy of 3D cell culture models in vitro, we tackle the problem of oxygen transport by blood using, for the first time, a breathable hemoglobin analog to improve delivery of respiratory gases to cells, because in vivo approximately 98% of oxygen delivery to cells takes place via reversible binding to hemoglobin. Next, we show that improved oxygenation shifts cellular metabolic pathways toward oxidative phosphorylation that contributes to the maintenance of differentiated liver phenotypes in vitro. Lastly, we demonstrate that the activity of cytochrome P450 family of drug metabolizing enzymes is increased and prolonged in primary human hepatocytes cultured in 3D compared to two-dimensional (2D) cell culture gold standard with important ramifications for drug metabolism, drug-drug interactions and pharmacokinetic studies in vitro.
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Affiliation(s)
| | - Wanrui Zhang
- Lena Biosciences, Inc., Atlanta, GA, United States
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Sage M, See W, Nault S, Morin C, Michalski C, Chabot B, Marouan S, Lavoie PM, Micheau P, Praud JP, Fortin-Pellerin É. Effect of Low Versus High Tidal-Volume Total Liquid Ventilation on Pulmonary Inflammation. Front Physiol 2020; 11:603. [PMID: 32625110 PMCID: PMC7315809 DOI: 10.3389/fphys.2020.00603] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/14/2020] [Indexed: 01/28/2023] Open
Abstract
Animal experiments suggest that total liquid ventilation (TLV) induces less ventilator-induced lung injury (VILI) than conventional mechanical gas ventilation. However, TLV parameters that optimally minimize VILI in newborns remain unknown. Our objective was to compare lung inflammation between low (L-VT) and high (H-VT) liquid tidal volume and evaluate impacts on the weaning process. Sixteen anesthetized and paralyzed newborn lambs were randomized in an L-VT group (initial tidal volume of 10 mL/kg at 10/min) and an H-VT group (initial tidal volume of 20 mL/kg at 5/min). Five unventilated newborn lambs served as controls. After 4 h of TLV in the supine position, the lambs were weaned in the prone position for another 4 h. The levels of respiratory support needed during the 4 h post-TLV were compared. The anterior and posterior lung regions were assessed by a histological score and real-time quantitative PCR for IL1B, IL6, and TNF plus 12 other exploratory VILI-associated genes. All but one lamb were successfully extubated within 2 h post-TLV (72 ± 26 min vs. 63 ± 25 min, p = 0.5) with similar FiO2 at 4 h post-TLV (27 ± 6% vs. 33 ± 7%, p = 0.3) between the L-VT and H-VT lambs. No significant differences were measured in histological inflammation scores between L-VT and H-VT lambs, although lambs in both groups exhibited slightly higher scores than the control lambs. The L-VT group displayed higher IL1B mRNA expression than the H-VT group in both anterior (2.8 ± 1.5-fold increase vs. 1.3 ± 0.4-fold increase, p = 0.02) and posterior lung regions (3.0 ± 1.0-fold change increase vs. 1.1 ± 0.3-fold increase, p = 0.002), respectively. No significant differences were found in IL6 and TNF expression levels. Gene expression changes overall indicated that L-VT was associated with a qualitatively distinct inflammatory gene expression profiles compared to H-VT, which may indicate different clinical effects. In light of these findings, further mechanistic studies are warranted. In conclusion, we found no advantage of lower tidal volume use, which was in fact associated with a slightly unfavorable pattern of inflammatory gene expression.
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Affiliation(s)
- Michaël Sage
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Wendy See
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Stéphanie Nault
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Christophe Morin
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Christina Michalski
- BC Children’s Hospital Research Institute, The University of British Columbia, Vancouver, BC, Canada
- Department of Experimental Medicine, The University of British Columbia, Vancouver, BC, Canada
| | - Benoit Chabot
- Department of Microbiology and Infectiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Sofia Marouan
- Department of Pathology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Pascal M. Lavoie
- BC Children’s Hospital Research Institute, The University of British Columbia, Vancouver, BC, Canada
- Department of Experimental Medicine, The University of British Columbia, Vancouver, BC, Canada
- Department of Pediatrics, The University of British Columbia, Vancouver, BC, Canada
| | - Philippe Micheau
- Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Jean-Paul Praud
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
- Department of Pediatrics, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Étienne Fortin-Pellerin
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
- Department of Pediatrics, Université de Sherbrooke, Sherbrooke, QC, Canada
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