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Guiouillier F, Derely J, Salvadori A, Pochard J, Le Goff J, Martinez T, Raffin F, Laitselart P, Beaucreux C, Priou S, Conan PL, Foissaud V, Servonnet A, Vest P, Boutonnet M, de Rudnicki S, Bigaillon C, Libert N. Reactivation of Epstein-Barr virus among intensive care patients: a prospective observational study. Intensive Care Med 2024; 50:418-426. [PMID: 38436725 DOI: 10.1007/s00134-024-07345-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/02/2024] [Indexed: 03/05/2024]
Abstract
PURPOSE Herpesvirus reactivation has been documented among patients in the intensive care unit (ICU) and is associated with increased morbidity and mortality, particularly for cytomegalovirus (CMV). Epstein-Barr virus (EBV) has been poorly studied despite >95% of the population being seropositive. Our preliminary study suggested an association between EBV reactivation and increased morbidity and mortality. This study aimed to investigate this association among patients admitted to the ICU. METHODS In this multicenter prospective study, polymerase chain reaction was performed to quantify EBV in patients upon ICU admission and then twice a week during their stay. Follow-up was 90 days. RESULTS The study included 129 patients; 70 (54.3%) had EBV reactivation. On day 90, there was no difference in mortality rates between patients with and without reactivation (25.7% vs 15.3%, p = 0.22). Patients with EBV reactivation at admission had increased mortality compared with those without reactivation and those with later reactivation. EBV reactivation was associated with increased morbidity. Patients with EBV reactivation had fewer ventilator-free days at day 28 than those without reactivation (18 [1-22] vs. 21 days [5-26], p = 0.037) and a higher incidence of acute respiratory distress syndrome (34.3% vs. 17%, p = 0.04), infections (92.9% vs. 78%, p = 0.03), and septic shock (58.6% vs. 32.2%, p = 0.004). More patients with EBV reactivation required renal replacement therapy (30% vs. 11.9%, p = 0.02). EBV reactivation was also associated with a more inflammatory immune profile. CONCLUSION While EBV reactivation was not associated with increased 90-day mortality, it was associated with significantly increased morbidity.
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Affiliation(s)
- François Guiouillier
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Jean Derely
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Alexandre Salvadori
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Bégin, Saint Mandé, France
| | - Jonas Pochard
- Service d'Anesthésie-réanimation Chirurgicale, Hôpital de Bicêtre, Université Paris-Saclay, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicêtre, France
| | - Jérôme Le Goff
- Département des Agents Infectieux, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Thibault Martinez
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Florent Raffin
- Institut de Recherche Biomédicale des Armées, Unité d'Analyses Biologiques, Brétigny sur Orge, France
| | - Philippe Laitselart
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Charlotte Beaucreux
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Bégin, Saint Mandé, France
| | - Sonia Priou
- CentraleSupelec, Université Paris Saclay, Laboratoire Génie Industriel, Gif-Sur-Yvette, France
| | - Pierre-Louis Conan
- Service de maladie infectieuse, Hôpital d'Instruction des Armées Bégin, Saint Mandé, France
| | - Vincent Foissaud
- Service de biologie médicale, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Aurélie Servonnet
- Institut de Recherche Biomédicale des Armées, Unité d'Analyses Biologiques, Brétigny sur Orge, France
| | - Philippe Vest
- Service de biologie médicale, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Mathieu Boutonnet
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Stéphane de Rudnicki
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France
| | - Christine Bigaillon
- Service de biologie médicale, Hôpital d'Instruction des Armées Bégin, Saint Mandé, France
| | - Nicolas Libert
- Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Percy, Clamart, France.
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Beddek K, Raffin F, Borgel D, Saller F, Riccobono D, Bobe R, Boittin F. TRPV4 channel activation induces the transition of venous and arterial endothelial cells toward a pro-inflammatory phenotype. Physiol Rep 2021; 9:e14613. [PMID: 33512067 PMCID: PMC7845413 DOI: 10.14814/phy2.14613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 09/20/2020] [Accepted: 09/22/2020] [Indexed: 11/24/2022] Open
Abstract
The Transient Receptor Potential Vanilloid 4 (TRPV4) of endothelial cells contributes to many important functions including the regulation of Ca2+ homeostasis, cell volume, endothelial barrier permeability, and smooth muscle tone. However, its role in the transition of endothelial cells toward a pro-inflammatory phenotype has not been studied so far. Using both arterial and venous endothelial cells, we first show that the pharmacological activation of TRPV4 channels with GSK1016790A, a potent TRPV4 agonist, triggers robust and sustained Ca2+ increases, which are blocked by both TRPV4 antagonists HC067047 and RN9893. TRPV4 activation also triggers the actin cytoskeleton and adherens junction (VE-Cadherin) rearrangement in both arterial and venous endothelial cells and leads to rapid decreases of trans-endothelial electrical resistance. In addition to its effect on endothelial barrier integrity, TRPV4 activation selectively increases ICAM-1 surface expression in arterial and venous endothelial cells, due to the stimulation of ICAM-1 gene expression through the NF-κB transcription factor. TRPV4 channel activation also induced apoptosis of venous and arterial endothelial cells, while TRPV4 blockade reduced apoptosis, even in the absence of TRPV4 activation. As altered barrier integrity, increased adhesion molecule expression and apoptosis are hallmarks of the pro-inflammatory state of endothelial cells, our results indicate that TRPV4 channel activity can induce the transition of both venous and arterial endothelial cells toward a pro-inflammatory phenotype.
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Affiliation(s)
- Kathia Beddek
- INSERM Unité Mixte de Recherche‐Santé 1176Université Paris‐SudUniversité Paris‐SaclayLe Kremlin‐BicêtreFrance
| | - Florent Raffin
- Département des Plateformesunité Analyses BiologiquesIRBA (Institut de Recherche Biomédicale des Armées)Brétigny‐sur‐OrgeFrance
| | - Delphine Borgel
- INSERM Unité Mixte de Recherche‐Santé 1176Université Paris‐SudUniversité Paris‐SaclayLe Kremlin‐BicêtreFrance
| | - François Saller
- INSERM Unité Mixte de Recherche‐Santé 1176Université Paris‐SudUniversité Paris‐SaclayLe Kremlin‐BicêtreFrance
| | - Diane Riccobono
- Département Effets Biologiques des Rayonnementsunité de RadiobiologieIRBA (Institut de Recherche Biomédicale des Armées)Brétigny‐sur‐OrgeFrance
| | - Régis Bobe
- INSERM Unité Mixte de Recherche‐Santé 1176Université Paris‐SudUniversité Paris‐SaclayLe Kremlin‐BicêtreFrance
| | - François‐Xavier Boittin
- Département Effets Biologiques des Rayonnementsunité de RadiobiologieIRBA (Institut de Recherche Biomédicale des Armées)Brétigny‐sur‐OrgeFrance
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Bourgois A, Crouzier D, Legrand FX, Raffin F, Boyard A, Girleanu M, Favier AL, François S, Dekali S. Alumina nanoparticles size and crystalline phase impact on cytotoxic effect on alveolar epithelial cells after simple or HCl combined exposures. Toxicol In Vitro 2019; 59:135-149. [PMID: 31004741 DOI: 10.1016/j.tiv.2019.04.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 10/27/2022]
Abstract
Applications using alumina nanoparticles (Al2O3 NPs) have incredibly increased in different fields of activity. In defense and aerospace fields, solid composite propellants use leads to complex combustion aerosols emissions containing high concentrations of Al2O3 NPs and hydrogen chloride gas (HCl). To better characterize potential hazard resulting from exposure to these aerosols, this study assesses cytotoxic effects of mixtures containing both compounds on human pulmonary alveolar epithelial cells (A549 cell line) after 24 h exposures. After all co-exposures cell viability was >80%. However co-exposures decrease normalized real-time cell index. Significant decreases of intracellular reduced glutathione pool were also observed after co-exposures to γ-10 nm or γ/δ-13 nm Al2O3 NPs and HCl. Co-incubations with γ/δ-13 nm or γ-500 nm Al2O3 particles and HCl induced significant DNA double-strand breaks increases. Moreover all co-exposures and HCl alone disrupted cell cycle (increased G1 phase cells). Transmission Electron Microscopy (TEM) observations revealed γ/δ-13 nm Al2O3NPs adsorption and internalization in cell cytoplasm only, suggesting indirect genotoxic effects. According to our results Al2O3 particles/HCl mixtures can induce cytotoxic effects and Al2O3 size and crystallinity are two main parameters influencing cytotoxic mechanisms.
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Affiliation(s)
- Alexandra Bourgois
- Institut de Recherche Biomédicale des Armées (IRBA), Département EBR, Unité des Risques Technologiques Emergents, BP 73, 91223, Brétigny-sur-Orge Cedex, France; Université Paris Diderot, Sorbonne Paris Cité, Paris Cedex 13, France.
| | - David Crouzier
- Institut de Recherche Biomédicale des Armées (IRBA), Département EBR, Unité des Risques Technologiques Emergents, BP 73, 91223, Brétigny-sur-Orge Cedex, France.
| | - François-Xavier Legrand
- Institut Galien Paris-Sud, CNRS UMR 8612, Univ. Paris-Sud, Université Paris-Saclay, 5 rue Jean-Baptiste Clément, F-92290 Châtenay-Malabry, France.
| | - Florent Raffin
- Institut de Recherche Biomédicale des Armées (IRBA), Département Plateformes et Recherche Technologique, BP 73, 91223, Brétigny-sur-Orge Cedex, France.
| | - Alexandre Boyard
- Institut de Recherche Biomédicale des Armées (IRBA), Département EBR, Unité des Risques Technologiques Emergents, BP 73, 91223, Brétigny-sur-Orge Cedex, France.
| | - Maria Girleanu
- Institut de Recherche Biomédicale des Armées (IRBA), Département Plateformes et Recherche Technologique, BP 73, 91223, Brétigny-sur-Orge Cedex, France.
| | - Anne-Laure Favier
- Institut de Recherche Biomédicale des Armées (IRBA), Département Plateformes et Recherche Technologique, BP 73, 91223, Brétigny-sur-Orge Cedex, France.
| | - Sabine François
- Institut de Recherche Biomédicale des Armées (IRBA), Département EBR/Unité de Radiobiologie, BP 73, 91223, Brétigny-sur-Orge cedex, France.
| | - Samir Dekali
- Institut de Recherche Biomédicale des Armées (IRBA), Département EBR, Unité des Risques Technologiques Emergents, BP 73, 91223, Brétigny-sur-Orge Cedex, France.
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Boittin FX, Martigne P, Mayol JF, Denis J, Raffin F, Coulon D, Grenier N, Drouet M, Hérodin F. Experimental Quantification of Delayed Radiation-Induced Organ Damage in Highly Irradiated Rats With Bone Marrow Protection: Effect of Radiation Dose and Organ Sensitivity. Health Phys 2015; 109:134-144. [PMID: 26107434 DOI: 10.1097/hp.0000000000000300] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The evolution of organ damage following extensive high-dose irradiation remains largely unexplored and needs further investigation. Wistar rats [with or without partial bone marrow protection (∼20%)] were irradiated at lethal gamma-ray doses (12, 14, and 16 Gy) and received antibiotic support. While total-body-irradiated rats did not survive, bone marrow protection (achieved by protecting hind limbs behind a lead wall) combined with antibiotic support allowed survival of 12-Gy and 14-Gy irradiated rats for more than 3 mo, with a late phase of body weight loss and altered clinical status. Histological analysis of radiation-induced damages in visceral organs (liver, kidney, and ileum), performed 64 and 104 d after high-dose body irradiation, indicates that the extent and the evolution of damage depend on both the irradiation dose and organ. A dose-related aggravation of lesions was observed in the liver and kidney but not in the ileum. In contrast to the liver, alterations in the kidney and ileum aggravate with time, emphasizing the need to develop new efficient countermeasures to protect both the gastrointestinal tract and kidney from late-occurring radiation effects. Specifically, the complex evolution of organ damage presented in this paper offers the possibility to explore and then validate specific therapeutic windows using candidate drugs targeted to each injured visceral organ.
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Affiliation(s)
- François-Xavier Boittin
- *Institut de Recherche Biomédicale des Armées (IRBA), Department of Radiobiology, Brétigny-sur-Orge, France
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Abaamrane L, Raffin F, Schmerber S, Sendowski I. Intracochlear perfusion of leupeptin and z-VAD-FMK: influence of antiapoptotic agents on gunshot-induced hearing loss. Eur Arch Otorhinolaryngol 2011; 268:987-93. [PMID: 21246210 DOI: 10.1007/s00405-011-1487-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Accepted: 01/07/2011] [Indexed: 01/11/2023]
Abstract
The therapeutic efficiency of cochlear infusion of two anti-apoptotic substances: a potent calpain inhibitor, leupeptin and a caspase inhibitor, z-VAD-FMK was evaluated in guinea pigs after a gunshot noise-induced trauma (170 dB SPL). A preliminary study showed that hair cell apoptosis appeared within 7 days of the noise trauma. For each animal, one of the cochleae was perfused directly starting 1 h after the trauma with leupeptin or z-VAD-FMK for 7 days via a mini-osmotic pump whereas the other cochlea was untreated. ABR threshold shifts were measured over a 14-day recovery period. The functional hearing study was supplemented by histological analysis. Two days after the trauma significant differences were observed between threshold shifts in the z-VAD-FMK-treated and the non-treated ears. Cochleograms showed that hair cell losses were significantly lower in z-VAD-FMK-treated ears. Regarding the leupeptin treatment, no significant difference between treated and non-treated ears was observed. This work indicates that early direct infusion of z-VAD-FMK into the cochlea accelerates hearing recovery and reduces hair cell loss after gunshot noise-induced trauma. These results suggest that the gunshot noise-induced trauma may involve the caspase pathway rather than the calpain pathway in the apoptotic process.
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Affiliation(s)
- Loubna Abaamrane
- Institut de Recherches Biomédicales des Armées, 24 avenue des maquis du Grésivaudan, BP 87, 38702 La Tronche, France
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Sendowski I, Abaamrane L, Raffin F, Cros A, Clarençon D. Therapeutic efficacy of intra-cochlear administration of methylprednisolone after acoustic trauma caused by gunshot noise in guinea pigs. Hear Res 2006; 221:119-27. [PMID: 17008037 DOI: 10.1016/j.heares.2006.08.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 08/03/2006] [Accepted: 08/07/2006] [Indexed: 12/20/2022]
Abstract
The therapeutic efficacy of cochlear infusion of methylprednisolone (MP) after an impulse noise trauma (170dB SPL peak) was evaluated in guinea pigs. The compound action potential threshold shifts were measured over a 14 days recovery period after the gunshot exposure. For each animal, one of the cochlea was perfused directly into the scala tympani with MP during 7 days via a mini-osmotic pump, whereas the other cochlea was not pump-implanted. The functional study of hearing was supplemented by histological analysis. Forty eight hours after the trauma, significant differences between auditory threshold shifts in the implanted and non-implanted ears were observed for frequencies above 8kHz. At day 7, the difference was significant for only one frequency and no difference was observed after 14 days recovery. Cochleograms showed that the hair cell losses were significantly lower in the MP treated ears. This work indicates that direct infusion of MP into perilymphatic space accelerates hearing recovery, reduces hair cell losses after impulse noise trauma but does not limit permanent threshold shifts.
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MESH Headings
- Action Potentials/drug effects
- Animals
- Cochlea/drug effects
- Firearms
- Guinea Pigs
- Hair Cells, Auditory, Inner/drug effects
- Hair Cells, Auditory, Inner/pathology
- Hair Cells, Auditory, Outer/drug effects
- Hair Cells, Auditory, Outer/pathology
- Hearing Loss, Noise-Induced/drug therapy
- Hearing Loss, Noise-Induced/etiology
- Hearing Loss, Noise-Induced/pathology
- Hearing Loss, Noise-Induced/physiopathology
- Methylprednisolone/administration & dosage
- NF-kappa B/physiology
- Nitric Oxide/physiology
- Oxidative Stress/drug effects
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Affiliation(s)
- I Sendowski
- Centre de recherches du service de santé des armées (CRSSA), Département de radiobiologie, 24 avenue des Maquis du Grésivaudan, BP 87, 38702 La Tronche Cedex, France.
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Abstract
CONCLUSIONS The present findings show that magnesium administration can significantly reduce threshold shift 7 days after gunshot noise exposure. However, this improvement seems to be temporary, suggesting a probable advantage in prolonging the treatment. OBJECTIVE To evaluate the therapeutic efficacy of magnesium administration after hearing loss induced by gunshot noise. MATERIAL AND METHODS Forty-eight guinea pigs were exposed to an impulse noise (blank shot from a rifle; 170 or 176 dB SPL peak). The therapeutic efficacy of magnesium was evaluated by administering either the treatment or a placebo to the traumatized animals for 7 days, beginning 1 h after the trauma. Auditory function was explored for up to 14 days of recovery by recording the compound action potential in the round window. The functional study of hearing was supplemented by histological analysis. RESULTS The threshold shifts of the 170-dB SPL group that received magnesium were significantly lower than those of controls after 2 and 7 days of recovery, but no significant difference was evidenced at 14 days in this group, nor at any time in the 176-dB SPL group. Animals treated with magnesium after the 176-dB SPL exposure had a significant reduction in hair cell loss in the basal region.
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Affiliation(s)
- Isabelle Sendowski
- Pôle "Traumatisme Sonore", Département de Radiobiologie, Centre de Recherches du Service de Santé des Armées (CRSSA), La Tronche Cedex, France.
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Sendowski I, Raffin F, Clarençon D. Spectrum of neural electrical activity in guinea pig cochlea: Effects of anaesthesia regimen, body temperature and ambient noise. Hear Res 2006; 211:63-73. [PMID: 16310327 DOI: 10.1016/j.heares.2005.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2005] [Accepted: 08/29/2005] [Indexed: 11/23/2022]
Abstract
Spectral analysis of electric noise recorded from the round window of the cochlea is thought to represent the summed spontaneous activity of the auditory nerve. It has been postulated that it could provide a possible tinnitus index. Because experimental conditions could change this neural activity, the effect of anaesthesia regimen, body temperature and ambient noise on the spectrum of spontaneous neural noise (SNN) were investigated in guinea pig cochlea. SNN was studied in awake guinea pigs and after anaesthesia with pentobarbital (P), xylazine/ketamine (XK) or xylazine/tiletamine-zolazepam (XTZ). Body temperature varied gradually from 33 to 41 degrees C under XK regimen. In awake animals, broadband noise was generated with intensity varying from 0 to 50 dB. The SNN consisted in a broad peak at approximately 900 Hz. With ambient broadband noise, it increased exponentially with the sound level with no shift in frequency. Soon after anaesthetic induction, the lowest frequencies were constantly decreased, and gradually the 900 Hz peak either increased moderately (P) or dropped steeply (XTZ) or remained unchanged (XK). Peak frequency increased linearly with body temperature whereas the amplitude reached a maximum at around 39.5 degrees C. In conclusion, these data indicate that experimental conditions such as anaesthesia regimen, body temperature and ambient noise modify the spontaneous neural outflow of the cochlea and must be taken into account when studying SNN.
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Affiliation(s)
- I Sendowski
- Centre de recherches du service de santé des Armées (CRSSA), Département de radiobiologie, 24 avenue des Maquis du Grésivaudan BP 87, 38702, La Tronche Cedex, France.
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Santini G, Ius A, De Paoli P, Raffin F. ["In vitro" evaluation of granulocytic function using a chemoluminescent technique]. Quad Sclavo Diagn 1982; 18:233-9. [PMID: 6300954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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