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Da-Veiga MA, Coppieters N, Lombard A, Rogister B, Neirinckx V, Piette C. Comprehensive profiling of stem-like features in pediatric glioma cell cultures and their relation to the subventricular zone. Acta Neuropathol Commun 2023; 11:96. [PMID: 37328883 PMCID: PMC10276389 DOI: 10.1186/s40478-023-01586-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/20/2023] [Indexed: 06/18/2023] Open
Abstract
Pediatric high-grade gliomas (pHGG) are brain tumors occurring in children and adolescents associated with a dismal prognosis despite existing treatments. Therapeutic failure in both adult and pHGG has been partially imputed to glioma stem cells (GSC), a subset of cancer cells endowed with stem-like cell potential and malignant, invasive, adaptative, and treatment-resistant capabilities. Whereas GSC have largely been portrayed in adult tumors, less information has been provided in pHGG. The aim of our study was to comprehensively document the stem-like capacities of seven in-use pediatric glioma cell cultures (Res259, UW479, SF188, KNS42, SF8628, HJSD-DIPG-007 and HJSD-DIPG-012) using parallel in vitro assays assessing stem cell-related protein expression, multipotency, self-renewal and proliferation/quiescence, and in vivo investigation of their tumorigenicity and invasiveness. Data obtained from in vitro experiments revealed glioma subtype-dependent expression of stem cell-related markers and varying abilities for differentiation, self-renewal, and proliferation/quiescence. Among tested cultures, DMG H3-K27 altered cultures displayed a particular pattern of stem-like markers expression and a higher fraction of cells with self-renewal potential. Four cultures displaying distinctive stem-like profiles were further tested for their ability to initiate tumors and invade the brain tissue in mouse orthotopic xenografts. The selected cell cultures all showed a great tumor formation capacity, but only DMG H3-K27 altered cells demonstrated a highly infiltrative phenotype. Interestingly, we detected DMG H3-K27 altered cells relocated in the subventricular zone (SVZ), which has been previously described as a neurogenic area, but also a potential niche for brain tumor cells. Finally, we observed an SVZ-induced phenotypic modulation of the glioma cells, as evidenced by their increased proliferation rate. In conclusion, this study recapitulated a systematic stem-like profiling of various pediatric glioma cell cultures and call to a deeper characterization of DMG H3-K27 altered cells nested in the SVZ.
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Affiliation(s)
- Marc-Antoine Da-Veiga
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Natacha Coppieters
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
- Department of Neurosurgery, CHU Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
- Department of Neurology, CHU Liège, Liège, Belgium
| | - Virginie Neirinckx
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Caroline Piette
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
- Department of Pediatrics, Division of Hematology-Oncology, CHU Liège, Liège, Belgium
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Coppieters N, Scalisi J, Digregorio M, Leparc L, Velazquez Saez L, Lombard A, Rogister B, Neirinckx V. Study of Strawberry Notch homolog 1 and 2 expression in human glioblastoma. J Neurooncol 2023; 161:515-523. [PMID: 36695974 DOI: 10.1007/s11060-023-04240-7] [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: 12/07/2022] [Accepted: 01/05/2023] [Indexed: 01/26/2023]
Abstract
PURPOSE In this work, we aimed to comprehensively document the expression of Strawberry Notch homolog (SBNO) 1 and 2 in glioblastoma (GBM) tissue and patient-derived GBM stem-like cell (GSC) cultures. METHODS We investigated SBNO1 and SBNO2 expression at the RNA and protein levels in glioma patient tissue and GSCs, respectively by performing immunostainings and qPCR analyses. We also used publicly-available datasets for assessing SBNO1 and SBNO2 gene expression and related copy number alterations. We used lentiviral transduction of SBNO2 to analyze the effect of its expression in patient-derived GSCs. RESULTS We observed that SBNO2 expression is increased in GBM tissue samples compared to non tumoral brain, or lower-grade gliomas, whereas SBNO1 expression remains unchanged. We hypothesized that such SBNO2 high expression might be linked to copy-number alterations at the level of the 19p13 chromosome section. We located SBNO1 and SBNO2 in different subcellular compartments. Finally, we observed that SBNO2 overexpression induces different phenotypes in different patient-derived GSCs. CONCLUSION These results provide the first characterization of SBNO1 and SBNO2 expression in glioma tissue, and indicate SBNO2 as highly expressed in GBM.
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Affiliation(s)
- Natacha Coppieters
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Joshua Scalisi
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Louise Leparc
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Laetitia Velazquez Saez
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
- Neurosurgery Department, University Hospital, University of Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium
- Neurology Department, University Hospital, University of Liège, Liège, Belgium
| | - Virginie Neirinckx
- Laboratory of Nervous System Diseases and Therapy, GIGA Neuroscience, GIGA Institute, University of Liège, Liège, Belgium.
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Sanchez Gil J, Dubois M, Neirinckx V, Lombard A, Coppieters N, D’Arrigo P, Isci D, Aldenhoff T, Brouwers B, Lassence C, Rogister B, Lebrun M, Sadzot-Delvaux C. Nanobody-based retargeting of an oncolytic herpesvirus for eliminating CXCR4+ GBM cells: A proof of principle. Molecular Therapy - Oncolytics 2022; 26:35-48. [PMID: 35784400 PMCID: PMC9217993 DOI: 10.1016/j.omto.2022.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/01/2022] [Indexed: 12/15/2022]
Abstract
Glioblastoma (GBM) is the most aggressive primary brain tumor in adults, which remains difficult to cure. The very high recurrence rate has been partly attributed to the presence of GBM stem-like cells (GSCs) within the tumors, which have been associated with elevated chemokine receptor 4 (CXCR4) expression. CXCR4 is frequently overexpressed in cancer tissues, including GBM, and usually correlates with a poor prognosis. We have created a CXCR4-retargeted oncolytic herpesvirus (oHSV) by insertion of an anti-human CXCR4 nanobody in glycoprotein D of an attenuated HSV-1 (ΔICP34.5, ΔICP6, and ΔICP47), thereby describing a proof of principle for the use of nanobodies to target oHSVs toward specific cellular entities. Moreover, this virus has been armed with a transgene expressing a soluble form of TRAIL to trigger apoptosis. In vitro, this oHSV infects U87MG CXCR4+ and patient-derived GSCs in a CXCR4-dependent manner and, when armed, triggers apoptosis. In a U87MG CXCR4+ orthotopic xenograft mouse model, this oHSV slows down tumor growth and significantly improves mice survival. Customizing oHSVs with diverse nanobodies for targeting multiple proteins appears as an interesting approach for tackling the heterogeneity of GBM, especially GSCs. Altogether, our study must be considered as a proof of principle and a first step toward personalized GBM virotherapies to complement current treatments.
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Affiliation(s)
- Judit Sanchez Gil
- Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 4000 Liège, Belgium
| | - Maxime Dubois
- Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 4000 Liège, Belgium
| | - Virginie Neirinckx
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
- Department of Neurosurgery, CHU of Liège, 4000 Liège, Belgium
| | - Natacha Coppieters
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Paolo D’Arrigo
- Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 4000 Liège, Belgium
| | - Damla Isci
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Therese Aldenhoff
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Benoit Brouwers
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Cédric Lassence
- Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 4000 Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Disorders and Therapy, GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
- Department of Neurology, CHU of Liège, 4000 Liège, Belgium
| | - Marielle Lebrun
- Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 4000 Liège, Belgium
| | - Catherine Sadzot-Delvaux
- Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 4000 Liège, Belgium
- Corresponding author Catherine Sadzot-Delvaux, Laboratory of Virology and Immunology, GIGA Infection, Inflammation and Immunity (GIGA I3), University of Liège, 11 Avenue de l’Hôpital, 4000 Liège, Belgium.
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Lombard A, Duffau H. Sexual Dysfunction of Patients with Diffuse Low-Grade Glioma: A Qualitative Review of a Neglected Concern. Cancers (Basel) 2022; 14:cancers14123025. [PMID: 35740690 PMCID: PMC9221288 DOI: 10.3390/cancers14123025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Patients suffering from diffuse Low-Grade Glioma (LGG) are usually young adults and present long life expectancy thanks to multimodal therapeutic management. In this context, the preservation of quality of life (QoL) is essential, and sexual health is part of it. We reviewed here the current knowledge about sexual dysfunction in LGG patients. We highlighted how this issue has been largely neglected, despite an incidence from 44 to 62% in the rare series of the literature. Thus, there is a need to assess more systematically the occurrence of SD in clinical routine in order to adapt cancer treatments accordingly, to manage actively these troubles, and finally to improve patients’ QoL in the long run. Abstract Diffuse low-grade gliomas (LGG) commonly affect young adults and display a slow evolution, with a life expectancy that can surpass 15 years, thanks to multimodal therapeutic management. Therefore, preservation of quality of life (QoL), including sexual health, is mandatory. We systematically searched available medical databases of Pubmed, Cochrane, and Scopus for studies that reported data on sexual activity or dysfunction (SD) in LGG patients. We analyzed results to determine incidence of SD and its association with QoL in this population. Three studies focused on SD incidence in patients presenting specifically LGG, or brain tumors including LGG. They comprised 124 brain tumor patients, including 62 LGG, with SD incidence ranging from 44 to 63%. SD was reported by more than 50% of interrogated women in the three studies. Regarding QoL, two out of the three studies found significant associations between SD and alterations of QoL parameters, particularly in the field of social and functional wellbeing. Finally, we discussed those results regarding methods of evaluation, inherent biases, and therapeutic implications regarding antiseizure medications and also planning of surgery, chemo-, and radiotherapy. Our review showed that SD is highly prevalent but still poorly studied in LGG patients. As those patients are usually young and enjoy an active life, there is a need to assess more systematically the occurrence of SD in clinical routine, in order to adapt cancer treatments accordingly, to manage actively these troubles, and finally to improve patients’ QoL in the long run.
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Affiliation(s)
- Arnaud Lombard
- Department of Neurosurgery, Centre Hospitalier Universitaire of Liège, 4000 Liège, Belgium;
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liège, 4032 Liège, Belgium
| | - Hugues Duffau
- Department of Neurosurgery, Gui de Chauliac Hospital, 34295 Montpellier, France
- Team “Neuroplasticity, Stem Cells and Glial Tumors”, Institute of Functional Genomics, INSERM U-1191, University of Montpellier, 34090 Montpellier, France
- Correspondence:
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Da-Veiga MA, Rogister B, Lombard A, Neirinckx V, Piette C. Glioma Stem Cells in Pediatric High-Grade Gliomas: From Current Knowledge to Future Perspectives. Cancers (Basel) 2022; 14:cancers14092296. [PMID: 35565425 PMCID: PMC9099564 DOI: 10.3390/cancers14092296] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/26/2022] [Accepted: 05/02/2022] [Indexed: 12/10/2022] Open
Abstract
Simple Summary Pediatric high-grade glioma (pHGG) has a dismal prognosis in which the younger the patient, the more restricted the treatments are, in regard to the incurred risks. Current therapies destroy many tumor cells but fail to target the highly malignant glioma stem cells (GSCs) that adapt quickly to give rise to recurring, treatment-resistant cancers. Despite a lack of consensus around an efficient detection, GSCs are well described in adult brain tumors but remain poorly investigated in pediatric cases, mostly due to their rarity. An improved knowledge about GSC roles in pediatric tumors would provide a key leverage towards the elimination of this sub-population, based on targeted treatments. The aim of this review is to sum up the state of art about GSCs in pHGG. Abstract In children, high-grade gliomas (HGG) and diffuse midline gliomas (DMG) account for a high proportion of death due to cancer. Glioma stem cells (GSCs) are tumor cells in a specific state defined by a tumor-initiating capacity following serial transplantation, self-renewal, and an ability to recapitulate tumor heterogeneity. Their presence was demonstrated several decades ago in adult glioblastoma (GBM), and more recently in pediatric HGG and DMG. In adults, we and others have previously suggested that GSCs nest into the subventricular zone (SVZ), a neurogenic niche, where, among others, they find shelter from therapy. Both bench and bedside evidence strongly indicate a role for the GSCs and the SVZ in GBM progression, fostering the development of innovative targeting treatments. Such new therapeutic approaches are of particular interest in infants, in whom standard therapies are often limited due to the risk of late effects. The aim of this review is to describe current knowledge about GSCs in pediatric HGG and DMG, i.e., their characterization, the models that apply to their development and maintenance, the specific signaling pathways that may underlie their activity, and their specific interactions with neurogenic niches. Finally, we will discuss the clinical relevance of these observations and the therapeutic advantages of targeting the SVZ and/or the GSCs in infants.
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Affiliation(s)
- Marc-Antoine Da-Veiga
- Laboratory of Nervous System Disorders and Therapy, GIGA Institute, University of Liège, 4000 Liège, Belgium; (M.-A.D.-V.); (B.R.); (A.L.); (V.N.)
| | - Bernard Rogister
- Laboratory of Nervous System Disorders and Therapy, GIGA Institute, University of Liège, 4000 Liège, Belgium; (M.-A.D.-V.); (B.R.); (A.L.); (V.N.)
- Department of Neurology, CHU of Liège, 4000 Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Disorders and Therapy, GIGA Institute, University of Liège, 4000 Liège, Belgium; (M.-A.D.-V.); (B.R.); (A.L.); (V.N.)
- Department of Neurosurgery, CHU of Liège, 4000 Liège, Belgium
| | - Virginie Neirinckx
- Laboratory of Nervous System Disorders and Therapy, GIGA Institute, University of Liège, 4000 Liège, Belgium; (M.-A.D.-V.); (B.R.); (A.L.); (V.N.)
| | - Caroline Piette
- Laboratory of Nervous System Disorders and Therapy, GIGA Institute, University of Liège, 4000 Liège, Belgium; (M.-A.D.-V.); (B.R.); (A.L.); (V.N.)
- Department of Pediatrics, Division of Hematology-Oncology, CHU Liège, 4000 Liège, Belgium
- Correspondence:
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Botha R, Cardoso JH, Lombard A, Vermeulen V, Forgan TR, Al-Benna S, Chu KM. Surgical training during the COVID-19 pandemic - a single institution's trainee survey. S AFR J SURG 2022; 60:40-43. [PMID: 35451268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND Few studies have assessed the impact of COVID-19 on surgical training in low- and middle-income countries. The aim of this study was to survey the effect of the COVID-19 pandemic on postgraduate surgical training, research and registrar wellbeing in South Africa. METHODS A cross-sectional study was conducted as an online survey from 5 October 2020 to 1 December 2020. The study population was registrars from all surgical disciplines at the Faculty of Medicine and Health Sciences of Stellenbosch University. The survey consisted of 26 multiple-choice and five open-ended qualitative questions on the impact of COVID-19 on physical and mental wellbeing, skills acquisition and postgraduate research. RESULTS Of 98 surgical registrars, 35 (36%) responded. Twenty-three (65.7%) reported missed planned surgical rotations, 30 (85.7%) decreased surgical training time, and 22 (62.9%) reported a perceived decrease in training quality. Simulated skills training was only available to eight (22.9%) participants. Twenty-four (68.6%) experienced burnout and/or depression symptoms during the pandemic. Twenty-seven (77.1%) reported that postgraduate research was unaffected by the pandemic. CONCLUSION During the COVID-19 pandemic, surgical trainees at this institution reported a decrease in the quality of surgical training and skills acquisition and a negative impact on their mental wellbeing.
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Affiliation(s)
- R Botha
- Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa
| | - J H Cardoso
- Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa
| | - A Lombard
- Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa
| | - V Vermeulen
- Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa
| | - T R Forgan
- Division of Surgery, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Academic Hospital, South Africa
| | - S Al-Benna
- Division of Plastic and Reconstructive Surgery, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Academic Hospital, South Africa
| | - K M Chu
- Centre for Global Surgery, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa
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Botha R, Cardoso JH, Lombard A, Vermeiden V, Forgan TR, Al-Benna S, Chu KM. Surgical training during the COVID-19 pandemic - a single institution's trainee survey. S AFR J SURG 2022. [DOI: 10.17159/2078-5151/2022/v60n1a3604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Lombard A, Valentin ED, Neirincx V, Martin D, Rogister B. STEM-25. ADENO-ASSOCIATED VIRUS INTRAVENTRICULAR INJECTION ALLOWS THE RESTRICTED TRANSDUCTION OF GLIOBLASTOMA CELLS NESTED IN THE PERI- AND SUB-VENTRICULAR ZONE IN A PATIENT-DERIVED ORTHOTOPIC XENOGRAFT MODEL. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
INTRODUCTION: Glioblastoma (GBM) seems to arise from cells nested in the subventricular zone (SVZ), a neurogenic zone in the adult brain. After striatal engraftment of patient-derived GBM cells in mice, we showed that some tumor cells escape the tumor mass to colonize the SVZ. We aimed to determine if the SVZ-nested GBM cells could be highlighted by the intraventricular injection of a viral vector. MATERIALS AND METHODS: We determined the optimal Adeno-Associated Virus (AAV) serotype to transduce patient-derived GBM cells cultured in 3D (GB1). We studied the spreading of the virus 4 weeks after intraventricular injection in mice. We realized striatal engraftment with GB1 cells, previously transfected with a lentiviral construction in order to express the Red-Fluorescent-Protein (RFP) spontaneously, while they express Green-Fluorescent-Protein (eGFP) only in presence of Cre-recombinase. 10 weeks after engraftment, an AAV expressing Cre-Recombinase was injected in the lateral ventricle and mice were perfused at 14 weeks. RESULTS: AAV serotype DJ (AAVDJ) efficiently transduced GB1 cells. 4 weeks after intraventricular injection, the AAVDJ transduced cells in the SVZ and the medial part of the caudoputamen (mCP). The median of the longest distance between the right ventricle and the transduced cells in the mCP was 293.8µm [245 – 376.5]. In 5 mice, the median of the shortest distance between RFP-positive GBM cells and right ventricle was 580.1µm [535 – 785.1]. SVZ was not colonized and eGFP signal was not found. In the 4 other mice, SVZ was invaded and eGFP signal was detected. The median of the longest distance between the right ventricle and eGFP-positive tumor cells was 240.5µm [195.7 – 372.5]. The median of the eGFP volume was 9 499 404µm3. CONCLUSION: It is possible to transduce GBM cells nested in the peri- and sub-ventricular zone thanks to AAV intraventricular injection.
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Gungor G, Michalet M, Lombard A, Roque T, Atalar B, Temur B, Serbez I, Azria D, de Vitry L, Riou O, Paragios N, Ozyar E, Fenoglietto P. Human-Level Precision Upper Abdominal OAR Contouring With Anatomically Preserving Deep Learning During Magnetic Resonance Imaging Guided Adaptive Radiotherapy (MRgRT). Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Héry JC, Champain G, Lombard A, Hulet C, Malherbe M. Relevance of antibiotic prophylaxis in the management of surgical emergency open hand trauma. Hand Surg Rehabil 2021; 41:137-141. [PMID: 34637966 DOI: 10.1016/j.hansur.2021.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/08/2021] [Accepted: 09/24/2021] [Indexed: 11/26/2022]
Abstract
Surgical site infection after emergency hand surgery can cause considerable morbidity and, in the most severe forms, even toxic shock syndrome. Postoperative antibiotic prophylaxis aims to reduce the number of surgical site infections. However, excessive use of antibiotics induces side-effects for patients and antibiotic resistance for society. Contrary to other orthopedic sites, there is no consensus on postoperative antibiotic prophylaxis in open hand trauma beyond analogic reasoning with no proven scientific validity. Our hypothesis was that absence of postoperative antibiotic prophylaxis after open hand trauma surgery does not affect the rate of surgical site infections. A prospective cohort study included 405 patients, operated on in the emergency hand trauma unit without intra- or post-operative antibiotic prophylaxis. Patients were followed up in consultation at 7, 14 and 30 days. Surgical site infection was defined by need for surgery for detersion and flattening, followed by curative antibiotic therapy. The surgical site infection rate was 2.22%. Four patients were lost to follow-up and counted as surgical site infection as originally planned in the worst-case analysis. There were five surgical revisions followed by antibiotic therapy. These results do not differ from those reported in the literature, and thus confirm our hypothesis that postoperative antibiotic prophylaxis is not indicated in open hand trauma management.
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Affiliation(s)
- J-C Héry
- Department of Orthopaedics and Traumatology, Caen University Hospital, Avenue de la Côte de Nacre, 14000 Caen, France.
| | - G Champain
- Department of Orthopaedics and Traumatology, Caen University Hospital, Avenue de la Côte de Nacre, 14000 Caen, France
| | - A Lombard
- Department of Orthopaedics and Traumatology, Caen University Hospital, Avenue de la Côte de Nacre, 14000 Caen, France
| | - C Hulet
- Department of Orthopaedics and Traumatology, Caen University Hospital, Avenue de la Côte de Nacre, 14000 Caen, France
| | - M Malherbe
- Department of Orthopaedics and Traumatology, Caen University Hospital, Avenue de la Côte de Nacre, 14000 Caen, France
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Lombard A, Shreshtha K, Robert C, Roque T, Fauchon F, Noël G, Paragios N, Deutsch E. PO-1680 Synthetic-CT generation from T1w brain MRIs with a cascaded GANs ensemble approach. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08131-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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de Vitry L, Fick R, Bus N, Dedieu J, Lombard A, Paragios N. PO-1839 End-to-end Treatment Planning Optimization through Dose/Anatomy-based Metric-learning kNN Embeddings. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08290-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Reuter G, Lombard A, Suero Molina E, Scholtes F, Bianchi E. Hans Joachim Scherer: an under-recognized pioneer of glioma research in Belgium. Acta Neurol Belg 2021; 121:867-872. [PMID: 33999386 DOI: 10.1007/s13760-021-01708-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/27/2021] [Accepted: 05/13/2021] [Indexed: 11/29/2022]
Abstract
Hans Joachim Scherer (1906-1946) was a German pathologist who fled Germany to Belgium to work on glioma genesis, growth and progression. Despite being seldom cited, and due to the contributions discussed in this article, Hans Joachim Scherer, can be considered a founding father of contemporary neuropathology and glioma research. We discuss Scherer's achievements in glioma classification, glomerular structures of glioma, primary and secondary glioblastoma, glioma growth patterns, non-resectability of glioma, pseudopalisadic necrosis and the late occurrence of symptoms in glioma.
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Affiliation(s)
- Gilles Reuter
- Neurosurgery, Centre Hospitalier Universitaire de Liège, 4000, Liège, Belgium.
- GIGA In-vivo Imaging Center, Université de Liège, Liège, Belgium.
| | - Arnaud Lombard
- Neurosurgery, Centre Hospitalier Universitaire de Liège, 4000, Liège, Belgium
| | - Eric Suero Molina
- Department of Neurosurgery, University Hospital of Münster, Munster, Germany
| | - Felix Scholtes
- Neurosurgery, Centre Hospitalier Universitaire de Liège, 4000, Liège, Belgium
- Neuroanatomy, Université de Liège, Liège, Belgium
| | - Elettra Bianchi
- Neuropathology, Centre Hospitalier Universitaire de Liège, Liège, Belgium
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Brion T, Karamouza E, De Vitry L, Lombard A, Roque T, Paragios N, Auzac G, Lamrani-Ghaouti A, Bonnet N, Limkin E, Ung M, Bockel S, Pasquier D, Wong S, trialists H, Achkar S, Rivera S. PD-0731 Improvement of a deep learning based automatic delineation model using anatomical criteria. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07010-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Abstract
Background The purpose of the on-field referee is to implement the laws of the game. For the referee to do this successfully, he is required to keep up with the pace of play. Objectives The aim of this study was to determine the physical attributes of sub-elite rugby union referees of inland provinces in South Africa. Methods A total of 82 referees (age: 26.5 ± 6.4 years; stature: 177.3 ± 6.8 cm; body mass: 79.1 ± 14.7 kg) were assessed with a reliable testing battery. Results The participants showed a refined aerobic capacity (VO2max: 61.8 ± 11.0 mL·min-1·kg-1) and good agility (Illinois Agility Test: 17.2 ± 3.8 s). A two-way unbalanced ANOVA was performed for all referees' attributes between qualification levels (levels 1-4) and union affiliations (three unions) at a significance level of p<0.05. The results yielded significant differences across the three unions in age (p=0.002), Yo-Yo distance (p=0.0001), aerobic capacity (p=0.0001), plank time (p=0.0001) and agility (p=0.027). Similarly, differences were reported across the four qualifications in aerobic capacity (p=0.0001) and agility (p=0.037). Conclusion These differences may be due to the diverse training programmes offered by the various unions. Additionally, an increased level of physical fitness may occur when progressing up the qualification levels.
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Gérardy F, Dewandre Q, Lombard A, Reuter G, Kaschten B, Racaru T, Salado AL, Dubuisson A, Martin D. [Epidural lipomatosis : management proposal]. Rev Med Liege 2021; 76:71-76. [PMID: 33543850] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Epidural lipomatosis is a rare condition characterized by excessive accumulation of normal fat in the epidural space. This paper presents the results of a retrospective study of the charts of 20 patients. The 20 patients - 17 men and 3 women - were on average 64 years old. They suffered from radiculopathy and/or neurogenic claudication. Lipomatosis was idiopathic in 6 patients and secondary in 14 patients. Lipomatosis was MRI grade 2 in 30 % of cases and grade 3 in 70 % of cases. The patients have all been improved thanks to decompressive surgery by laminectomy and resection of epidural fat. According to our experience and to the literature, surgical decompression is an effective and safe procedure for patients with symptomatic lumbar epidural lipomatosis in case of failure of conservative treatment or in case of neurological deficits. We present a decision tree that can help in the management of this disease.
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Affiliation(s)
- F Gérardy
- Service de Neurochirurgie, CHU Liège, Belgique
| | - Q Dewandre
- Service de Neurochirurgie, CHU Liège, Belgique
| | - A Lombard
- Service de Neurochirurgie, CHU Liège, Belgique
| | - G Reuter
- Service de Neurochirurgie, CHU Liège, Belgique
| | - B Kaschten
- Service de Neurochirurgie, CHU Liège, Belgique
| | - T Racaru
- Service de Neurochirurgie, CHU Liège, Belgique
| | - A L Salado
- Service de Neurochirurgie, CHU Liège, Belgique
| | - A Dubuisson
- Service de Neurochirurgie, CHU Liège, Belgique
| | - D Martin
- Service de Neurochirurgie, CHU Liège, Belgique
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Dubuisson A, Kaschten B, Steinmetz M, Gérardy F, Lombard A, Dewandre Q, Reuter G. Iatrogenic nerve injuries: a potentially serious medical and medicolegal problem. About a series of 42 patients and review of the literature. Acta Neurol Belg 2021; 121:119-124. [PMID: 32651878 DOI: 10.1007/s13760-020-01424-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/30/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To analyze the management of iatrogenic nerve injuries (iNI) in 42 patients. METHODS Retrospective analysis of the charts. RESULTS The iNI occurred mostly during a surgical procedure (n = 39), either on a nerve or plexus (n = 13), on bone, joint, vessel or soft tissue (n = 24) or because of malpositioning (n = 2). The most commonly injured nerves were the brachial plexus, radial, sciatic, femoral, or peroneal nerves. 42.9% of the patients were referred later than 6 months. A neurological deficit was present in 37 patients and neuropathic pain in 17. Two patients were lost to follow-up. Conservative treatment was applied in 23 patients because of good spontaneous recovery or compensation or because of expected bad prognosis whatever the treatment. Surgical treatment was performed in 17 patients because of known nerve section (n = 2), persistent neurological deficit (n = 12) or invalidating neuropathic pain (n = 3); nerve reconstruction with grafts (n = 8) and neurolysis (n = 8) were the most common procedures. Outcome was satisfactory in 50%. Potential reasons of poor outcome were a very proximal injury, placement of very long grafts, delayed referral and predominance of neuropathic pain. According to the literature delayed referral of iNI for treatment is frequent. We provide an illustrative case of a young girl operated on at 6.5 months for femoral nerve reconstruction with grafts while nerve section was obvious from the operative note and pathological tissue analysis. Litigation claims (n = 10) resulted in malpractice (n = 2) or therapeutic alea (n = 5) (3 unavailable conclusions). i CONCLUSIONS: NI can result in considerable disability, pain and litigation. Optimal management is required.
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Lombard A, Digregorio M, Delcamp C, Rogister B, Piette C, Coppieters N. The Subventricular Zone, a Hideout for Adult and Pediatric High-Grade Glioma Stem Cells. Front Oncol 2021; 10:614930. [PMID: 33575218 PMCID: PMC7870981 DOI: 10.3389/fonc.2020.614930] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/09/2020] [Indexed: 12/23/2022] Open
Abstract
Both in adult and children, high-grade gliomas (WHO grades III and IV) account for a high proportion of death due to cancer. This poor prognosis is a direct consequence of tumor recurrences occurring within few months despite a multimodal therapy consisting of a surgical resection followed by chemotherapy and radiotherapy. There is increasing evidence that glioma stem cells (GSCs) contribute to tumor recurrences. In fact, GSCs can migrate out of the tumor mass and reach the subventricular zone (SVZ), a neurogenic niche persisting after birth. Once nested in the SVZ, GSCs can escape a surgical intervention and resist to treatments. The present review will define GSCs and describe their similarities with neural stem cells, residents of the SVZ. The architectural organization of the SVZ will be described both for humans and rodents. The migratory routes taken by GSCs to reach the SVZ and the signaling pathways involved in their migration will also be described hereafter. In addition, we will debate the advantages of the microenvironment provided by the SVZ for GSCs and how this could contribute to tumor recurrences. Finally, we will discuss the clinical relevance of the SVZ in adult GBM and pediatric HGG and the therapeutic advantages of targeting that neurogenic region in both clinical situations.
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Affiliation(s)
- Arnaud Lombard
- Laboratory of Nervous System Disorders and Therapy, Groupement Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-Neurosciences Research Centre, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Nervous System Disorders and Therapy, Groupement Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-Neurosciences Research Centre, University of Liège, Liège, Belgium
| | - Clément Delcamp
- Laboratory of Nervous System Disorders and Therapy, Groupement Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-Neurosciences Research Centre, University of Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Disorders and Therapy, Groupement Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-Neurosciences Research Centre, University of Liège, Liège, Belgium.,Department of Neurology, CHU of Liège, Liège, Belgium
| | - Caroline Piette
- Laboratory of Nervous System Disorders and Therapy, Groupement Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-Neurosciences Research Centre, University of Liège, Liège, Belgium.,Department of Pediatrics, Division of Hematology-Oncology, CHU of Liège, Liège, Belgium
| | - Natacha Coppieters
- Laboratory of Nervous System Disorders and Therapy, Groupement Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-Neurosciences Research Centre, University of Liège, Liège, Belgium
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19
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Reuter G, Moïse M, Roll W, Martin D, Lombard A, Scholtes F, Stummer W, Suero Molina E. Conventional and advanced imaging throughout the cycle of care of gliomas. Neurosurg Rev 2021; 44:2493-2509. [PMID: 33411093 DOI: 10.1007/s10143-020-01448-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
Although imaging of gliomas has evolved tremendously over the last decades, published techniques and protocols are not always implemented into clinical practice. Furthermore, most of the published literature focuses on specific timepoints in glioma management. This article reviews the current literature on conventional and advanced imaging techniques and chronologically outlines their practical relevance for the clinical management of gliomas throughout the cycle of care. Relevant articles were located through the Pubmed/Medline database and included in this review. Interpretation of conventional and advanced imaging techniques is crucial along the entire process of glioma care, from diagnosis to follow-up. In addition to the described currently existing techniques, we expect deep learning or machine learning approaches to assist each step of glioma management through tumor segmentation, radiogenomics, prognostication, and characterization of pseudoprogression. Thorough knowledge of the specific performance, possibilities, and limitations of each imaging modality is key for their adequate use in glioma management.
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Affiliation(s)
- Gilles Reuter
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium. .,GIGA-CRC In-vivo Imaging Center, ULiege, Liège, Belgium.
| | - Martin Moïse
- Department of Radiology, University Hospital of Liège, Liège, Belgium
| | - Wolfgang Roll
- Department of Nuclear Medicine, University Hospital of Münster, Münster, Germany
| | - Didier Martin
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium
| | - Arnaud Lombard
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium
| | - Félix Scholtes
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium.,Department of Neuroanatomy, University of Liège, Liège, Belgium
| | - Walter Stummer
- Department of Neurosurgery, University Hospital of Münster, Münster, Germany
| | - Eric Suero Molina
- Department of Neurosurgery, University Hospital of Münster, Münster, Germany
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Lombard A, De Vitry D'Avaucourt L, Ullmann E, Marini-Silva R, Bus N, Paragios N. PO-1753: Full-body delineation of ROIs through anatomy-preserving deep learning ensemble networks. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01771-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Rivera S, Lombard A, Pasquier D, Wong S, Limkin E, Auzac G, Blanchecotte J, Chand-Fouché M, Lamrani-Ghaouti A, Bonnet N, Paragios N, Martineau-Huynh C, Ullmann E, Ruffier A, Deutsch E. PO-1722: AI-driven quality insurance for delineation in radiotherapy breast clinical trials. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01740-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Grégoire V, Blanchard P, Allajbej A, Petit C, Milhade N, Nguyen F, Bakkar S, Boulle G, Romano E, Zrafi W, Lombard A, Ullmann E, Paragios N, Deutsch E, Robert C. OC-0681: Deep learning auto contouring of OAR for HN radiotherapy: a blinded evaluation by clinical experts. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00703-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Blanchard P, Gregoire V, Petit C, Milhade N, Allajbej A, Nguyen T, Bakkar S, Boulle G, Lombard A, Beldjoudi G, Munoz A, Ullman E, Paragios N, Deutsch E, Robert C. A Blinded Prospective Evaluation Of Clinical Applicability Of Deep Learning-Based Auto Contouring Of OAR For Head and Neck Radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Fick R, Boule T, Pouille A, Lombard A, Bus N, Paragios N. SIMSEB: Unlocking the Dosimetric Potential of Sequential Boost Plans in VMAT Through Simultaneous Optimization. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Dedobbeleer M, Willems E, Lambert J, Lombard A, Digregorio M, Lumapat PN, Di Valentin E, Freeman S, Goffart N, Scholtes F, Rogister B. MKP1 phosphatase is recruited by CXCL12 in glioblastoma cells and plays a role in DNA strand breaks repair. Carcinogenesis 2020; 41:417-429. [PMID: 31504251 DOI: 10.1093/carcin/bgz151] [Citation(s) in RCA: 3] [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: 06/21/2019] [Revised: 08/10/2019] [Accepted: 08/29/2019] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most frequent and aggressive primary tumor in the central nervous system. Previously, the secretion of CXCL12 in the brain subventricular zones has been shown to attract GBM cells and protect against irradiation. However, the exact molecular mechanism behind this radioprotection is still unknown. Here, we demonstrate that CXCL12 modulates the phosphorylation of MAP kinases and their regulator, the nuclear MAP kinase phosphatase 1 (MKP1). We further show that MKP1 is able to decrease GBM cell death and promote DNA repair after irradiation by regulating major apoptotic players, such as Jun-N-terminal kinase, and by stabilizing the DNA repair protein RAD51. Increases in MKP1 levels caused by different corticoid treatments should be reexamined for GBM patients, particularly during their radiotherapy sessions, in order to prevent or to delay the relapses of this tumor.
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Affiliation(s)
- Matthias Dedobbeleer
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Estelle Willems
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Jeremy Lambert
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Paul Noel Lumapat
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | | | - Stephen Freeman
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Nicolas Goffart
- The T&P Bohnenn Laboratory for Neuro-Oncology, Department of Neurosurgery, UMC Utrecht, Utrecht, The Netherlands
| | - Felix Scholtes
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurology, CHU of Liège, Liège, Belgium
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Lombard A, Digregorio M, Coppieters N, Di Valentin E, Hego A, Martin D, Rogister B. Communicating hydrocephalus associated to ventral leptomeningeal invasion leads to precocious death in a glioblastoma orthotopic xenograft model. Neurooncol Adv 2020; 2:vdaa099. [PMID: 33005898 PMCID: PMC7518551 DOI: 10.1093/noajnl/vdaa099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Arnaud Lombard
- Laboratory of Developmental Neurobiology, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU and University of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Developmental Neurobiology, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Natacha Coppieters
- Laboratory of Developmental Neurobiology, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | | | - Alexandre Hego
- GIGA Cell Imaging Platform, University of Liège, Liège, Belgium
| | - Didier Martin
- Department of Neurosurgery, CHU and University of Liège, Liège, Belgium
| | - Bernard Rogister
- Department of Neurology, CHU and University of Liège, Liège, Belgium
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Ung M, Rivera S, Rouyar A, Limkin E, Petit C, Sarrade T, Carre A, Auzac G, Lombard A, Ullmann E, Bonnet N, Lamrani-Ghaouti A, Paragios N, Martineau-Huynh C, Deutsch E, Robert C. Dosimetric impact of an AI-based delineation software satisfying international guidelines in breast cancer radiotherapy. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30840-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Reuter G, Lommers E, Balteau E, Simon J, Phillips C, Scholtes F, Martin D, Lombard A, Maquet P. Multiparameter quantitative histological MRI values in high-grade gliomas: a potential biomarker of tumor progression. Neurooncol Pract 2020; 7:646-655. [PMID: 33304600 PMCID: PMC7716186 DOI: 10.1093/nop/npaa047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Conventional MRI poorly distinguishes brain parenchyma microscopically invaded by high-grade gliomas (HGGs) from the normal brain. By contrast, quantitative histological MRI (hMRI) measures brain microstructure in terms of physical MR parameters influenced by histochemical tissue composition. We aimed to determine the relationship between hMRI parameters in the area surrounding the surgical cavity and the presence of HGG recurrence. Methods Patients were scanned after surgery with an hMRI multiparameter protocol that allowed for estimations of longitudinal relaxation rate (R1) = 1/T1, effective transverse relaxation rate (R2)*=1/T2*, magnetization transfer saturation (MTsat), and proton density. The initial perioperative zone (IPZ) was segmented on the postoperative MRI. Once recurrence appeared on conventional MRI, the area of relapsing disease was delineated (extension zone, EZ). Conventional MRI showing recurrence and hMRI were coregistered, allowing for the extraction of parameters R1, R2*, MTsat, and PD in 3 areas: the overlap area between the IPZ and EZ (OZ), the peritumoral brain zone, PBZ (PBZ = IPZ - OZ), and the area of recurrence (RZ = EZ - OZ). Results Thirty-one patients with HGG who underwent gross-total resection were enrolled. MTsat and R1 were the most strongly associated with tumor progression. MTsat was significantly lower in the OZ and RZ, compared to PBZ. R1 was significantly lower in RZ compared to PBZ. PD was significantly higher in OZ compared to PBZ, and R2* was higher in OZ compared to PBZ or RZ. These changes were detected 4 to 120 weeks before recurrence recognition on conventional MRI. Conclusions HGG recurrence was associated with hMRI parameters' variation after initial surgery, weeks to months before overt recurrence.
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Affiliation(s)
- Gilles Reuter
- GIGA Cyclotron Research Centre-In Vivo Imaging, University of Liège, Liège, Belgium.,Department of Neurosurgery, University Hospital of Liège, Liège, Belgium
| | - Emilie Lommers
- GIGA Cyclotron Research Centre-In Vivo Imaging, University of Liège, Liège, Belgium.,Department of Neurology, University Hospital of Liège, Liège, Belgium
| | - Evelyne Balteau
- GIGA Cyclotron Research Centre-In Vivo Imaging, University of Liège, Liège, Belgium
| | - Jessica Simon
- Psychology and Neuroscience of Cognition-PsyNCogn, University of Liège, Liège, Belgium
| | - Christophe Phillips
- GIGA Cyclotron Research Centre-In Vivo Imaging, University of Liège, Liège, Belgium.,GIGA In Silico Medicine, University of Liège, Liège, Belgium
| | - Felix Scholtes
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium.,Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium.,Department of Neuroanatomy, University of Liège, Liège, Belgium
| | - Didier Martin
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium
| | - Arnaud Lombard
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium.,Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium
| | - Pierre Maquet
- GIGA Cyclotron Research Centre-In Vivo Imaging, University of Liège, Liège, Belgium.,Department of Neurology, University Hospital of Liège, Liège, Belgium
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Dubuisson A, Lombard A, Otto B. Pseudomalignant Myositis Ossificans of the Neck in a Child: Case Report and Review of the Literature. World Neurosurg 2019; 130:95-97. [PMID: 31260851 DOI: 10.1016/j.wneu.2019.06.165] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 06/12/2019] [Accepted: 06/20/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND Myositis ossificans is a benign process of heterotopic bone formation developing in soft tissues that can mimic malignancy. Differential diagnosis can be difficult without a biopsy when it originates in atypical locations. CASE DESCRIPTION A 5½-year-old boy was admitted for a cervical tumor causing torticollis. The nodular tumor developed at the lateral border of the right C3-4 foramen, had calcification/ossification at its periphery, and was accompanied by a huge edematous reaction of the scalene muscles. The patient underwent an extensive work-up by pediatric oncologists. A biopsy was requested because of high suspicion of malignancy. At surgery, the lesion was benign on frozen sections and was completely resected, allowing the diagnosis of myositis ossificans. The patient made a rapid and complete recovery. CONCLUSIONS Myositis ossificans circumscripta is rare in children, especially in the neck region. The diagnostic challenge is to differentiate it from bone and soft tissue malignancies. Appropriate management, including surgery if needed, leads to an excellent outcome. Another concern is to exclude fibrodysplasia ossificans progressiva when atraumatic myositis ossificans develops in a young child in the neck or shoulder region.
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Affiliation(s)
- Annie Dubuisson
- Department of Neurosurgery, Centre Hospitalier Universitaire de Liège, Liège, Belgium.
| | - Arnaud Lombard
- Department of Neurosurgery, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | - Bernard Otto
- Department of Diagnostic and Interventional Neuroradiology, Centre Hospitalier Universitaire de Liège, Liège, Belgium
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Lombard A, Dedobbeleer M, Willens E, Reuter G, Martin D, Rogister B. STEM-21. DECIPHERING THE RESPONSE OF SUBVENTRICULAR ZONE-NESTED GLIOBLASTOMA CELLS AFTER SURGERY. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy148.1028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Arnaud Lombard
- CHU Liège - Neurosurgery / University of Liège - GIGA Neuroscience, Liège, Belgium
| | | | | | | | | | - Bernard Rogister
- University of Liège - GIGA Neuroscience / CHU Liège - Neurology, Liège, Belgium
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Willems E, Dedobbeleer M, Digregorio M, Lombard A, Lumapat PN, Rogister B. The functional diversity of Aurora kinases: a comprehensive review. Cell Div 2018; 13:7. [PMID: 30250494 PMCID: PMC6146527 DOI: 10.1186/s13008-018-0040-6] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 09/05/2018] [Indexed: 02/07/2023] Open
Abstract
Aurora kinases are serine/threonine kinases essential for the onset and progression of mitosis. Aurora members share a similar protein structure and kinase activity, but exhibit distinct cellular and subcellular localization. AurA favors the G2/M transition by promoting centrosome maturation and mitotic spindle assembly. AurB and AurC are chromosome-passenger complex proteins, crucial for chromosome binding to kinetochores and segregation of chromosomes. Cellular distribution of AurB is ubiquitous, while AurC expression is mainly restricted to meiotically-active germ cells. In human tumors, all Aurora kinase members play oncogenic roles related to their mitotic activity and promote cancer cell survival and proliferation. Furthermore, AurA plays tumor-promoting roles unrelated to mitosis, including tumor stemness, epithelial-to-mesenchymal transition and invasion. In this review, we aim to understand the functional interplay of Aurora kinases in various types of human cells, including tumor cells. The understanding of the functional diversity of Aurora kinases could help to evaluate their relevance as potential therapeutic targets in cancer.
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Affiliation(s)
- Estelle Willems
- 1Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Avenue Hippocrate, 15, 4000 Liège, Belgium
| | - Matthias Dedobbeleer
- 1Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Avenue Hippocrate, 15, 4000 Liège, Belgium
| | - Marina Digregorio
- 1Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Avenue Hippocrate, 15, 4000 Liège, Belgium
| | - Arnaud Lombard
- 1Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Avenue Hippocrate, 15, 4000 Liège, Belgium.,2Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Paul Noel Lumapat
- 1Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Avenue Hippocrate, 15, 4000 Liège, Belgium.,3Department of Neurology, CHU of Liège, Liège, Belgium
| | - Bernard Rogister
- 1Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Avenue Hippocrate, 15, 4000 Liège, Belgium.,3Department of Neurology, CHU of Liège, Liège, Belgium
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Willems E, Dedobbeleer M, Digregorio M, Lombard A, Goffart N, Lumapat PN, Lambert J, Van den Ackerveken P, Szpakowska M, Chevigné A, Scholtes F, Rogister B. Aurora A plays a dual role in migration and survival of human glioblastoma cells according to the CXCL12 concentration. Oncogene 2018; 38:73-87. [PMID: 30082913 PMCID: PMC6755987 DOI: 10.1038/s41388-018-0437-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 07/10/2018] [Accepted: 07/11/2018] [Indexed: 12/13/2022]
Abstract
Primary glioblastoma is the most frequent human brain tumor in adults and is generally fatal due to tumor recurrence. We previously demonstrated that glioblastoma-initiating cells invade the subventricular zones and promote their radio-resistance in response to the local release of the CXCL12 chemokine. In this work, we show that the mitotic Aurora A kinase (AurA) is activated through the CXCL12–CXCR4 pathway in an ERK1/2-dependent manner. Moreover, the CXCL12–ERK1/2 signaling induces the expression of Ajuba, the main cofactor of AurA, which allows the auto-phosphorylation of AurA. We show that AurA contributes to glioblastoma cell survival, radio-resistance, self-renewal, and proliferation regardless of the exogenous stimulation with CXCL12. On the other hand, AurA triggers the CXCL12-mediated migration of glioblastoma cells in vitro as well as the invasion of the subventricular zone in xenograft experiments. Moreover, AurA regulates cytoskeletal proteins (i.e., Actin and Vimentin) and favors the pro-migratory activity of the Rho-GTPase CDC42 in response to CXCL12. Altogether, these results show that AurA, a well-known kinase of the mitotic machinery, may play alternative roles in human glioblastoma according to the CXCL12 concentration.
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Affiliation(s)
- Estelle Willems
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Matthias Dedobbeleer
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Nicolas Goffart
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Paul Noel Lumapat
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Jeremy Lambert
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | | | - Martyna Szpakowska
- Department of Infection and Immunity, Immuno-Pharmacology and Interactomics, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Andy Chevigné
- Department of Infection and Immunity, Immuno-Pharmacology and Interactomics, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Felix Scholtes
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium. .,Department of Neurology, CHU of Liège, Liège, Belgium.
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Assoumani A, Margoum C, Lombard A, Guillemain C, Coquery M. How do PDMS-coated stir bars used as passive samplers integrate concentration peaks of pesticides in freshwater? Environ Sci Pollut Res Int 2017; 24:6844-6852. [PMID: 27126867 DOI: 10.1007/s11356-016-6715-0] [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] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 04/17/2016] [Indexed: 06/05/2023]
Abstract
Passive samplers are theoretically capable of integrating variations of concentrations of micropollutants in freshwater and providing accurate average values. However, this property is rarely verified and quantified experimentally. In this study, we investigated, in controlled conditions, how the polydimethylsiloxane-coated stir bars (passive Twisters) can integrate fluctuating concentrations of 20 moderately hydrophilic to hydrophobic pesticides (2.18 < Log K ow < 5.51). In the first two experiments, we studied the pesticide accumulation in the passive Twisters during high concentration peaks of various durations in tap water. We then followed their elimination from the passive Twisters placed in non-contaminated water (experiment no. 1) or in water spiked at low concentrations (experiment no. 2) for 1 week. In the third experiment, we assessed the accuracy of the time-weighted average concentrations (TWAC) obtained from the passive Twisters exposed for 4 days to several concentration variation scenarios. We observed little to no elimination of hydrophobic pesticides from the passive Twisters placed in non-contaminated water and additional accumulation when placed in water spiked at low concentrations. Moreover, passive Twisters allowed determining accurate TWAC (accuracy, determined by TWAC-average measured concentrations ratios, ranged from 82 to 127 %) for the pesticides with Log K ow higher than 4.2. In contrast, fast and large elimination was observed for the pesticides with Log K ow lower than 4.2 and poorer TWAC accuracy (ranging from 32 to 123 %) was obtained.
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Affiliation(s)
- A Assoumani
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
| | - C Margoum
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France.
| | - A Lombard
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
| | - C Guillemain
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
| | - M Coquery
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
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Willems E, Lombard A, Dedobbeleer M, Goffart N, Rogister B. The Unexpected Roles of Aurora A Kinase in Gliobastoma Recurrences. Target Oncol 2016; 12:11-18. [DOI: 10.1007/s11523-016-0457-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Goffart N, Lombard A, Lallemand F, Kroonen J, Nassen J, Di Valentin E, Berendsen S, Dedobbeleer M, Willems E, Robe P, Bours V, Martin D, Martinive P, Maquet P, Rogister B. CXCL12 mediates glioblastoma resistance to radiotherapy in the subventricular zone. Neuro Oncol 2016; 19:66-77. [PMID: 27370398 DOI: 10.1093/neuonc/now136] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Patients with glioblastoma (GBM) have an overall median survival of 15 months despite multimodal therapy. These catastrophic survival rates are to be correlated to systematic relapses that might arise from remaining glioblastoma stem cells (GSCs) left behind after surgery. In this line, it has recently been demonstrated that GSCs are able to escape the tumor mass and preferentially colonize the adult subventricular zone (SVZ). At a distance from the initial tumor site, these GSCs might therefore represent a high-quality model of clinical resilience to therapy and cancer relapses as they specifically retain tumor-initiating abilities. METHOD While relying on recent findings that have validated the existence of GSCs in the human SVZ, we questioned the role of the SVZ niche as a potential GSC reservoir involved in therapeutic failure. RESULTS Our results demonstrate that (i) GSCs located in the SVZ are specifically resistant to radiation in vivo, (ii) these cells display enhanced mesenchymal roots that are known to be associated with cancer radioresistance, (iii) these mesenchymal traits are specifically upregulated by CXCL12 (stromal cell-derived factor-1) both in vitro and in the SVZ environment, (iv) the amount of SVZ-released CXCL12 mediates GBM resistance to radiation in vitro, and (v) interferes with the CXCL12/CXCR4 signalling system, allowing weakening of the tumor mesenchymal roots and radiosensitizing SVZ-nested GBM cells. CONCLUSION Together, these data provide evidence on how the adult SVZ environment, through the release of CXCL12, supports GBM therapeutic failure and potential tumor relapse.
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Affiliation(s)
- Nicolas Goffart
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Arnaud Lombard
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - François Lallemand
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Jérôme Kroonen
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Jessica Nassen
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Emmanuel Di Valentin
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Sharon Berendsen
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Matthias Dedobbeleer
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Estelle Willems
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Pierre Robe
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Vincent Bours
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Didier Martin
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Philippe Martinive
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Pierre Maquet
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
| | - Bernard Rogister
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences Research Center, University of Liège, Liège, Belgium (N.G., A.L., J.N., M.D., E.W., B.R.); Department of Neurosurgery, CHU and University of Liège, Liège, Belgium (A.L., D.M.); Department of Radiotherapy and Oncology, CHU and University of Liège, Liège, Belgium (F.L., P.M.); Laboratory of Tumor and Development Biology, GIGA-Cancer Research Center, University of Liège, Liège, Belgium (F.L.); Cyclotron Research Centre, University of Liège, Liège, Belgium (F.L.); Human Genetics, CHU and University of Liège, Liège, Belgium (N.G., J.K., V.B.); Department of Neurosurgery, Brain Center Rudolf Magnus Institute of Neurosciences and the T&P Bohnenn Laboratory for Neuro-Oncology University Medical Center, Utrecht, The Netherlands (N.G., J.K., S.B., P.R.); GIGA-Viral Vector Plateform, University of Liège, Liège, Belgium (E.D.V.); Department of Neurology, CHU and University of Liège, Liège, Belgium (P.M., B.R.)
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Dolbeau G, Lombard A, Youssov K, Dürr A, Charles P, Verny C, Azulay JP, Krystkowiak P, Simonin C, Tranchant C, Goizet C, Damier P, Supiot F, Broussolle E, Démonet JF, Marie RM, Verin M, Bachoud-Lévi AC, Maison P. L03 Use and impact of neuroleptics in Huntington's disease: a prospective cohort study of the Huntington French speaking group. J Neurol Neurosurg Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222687.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rossetti V, Lombard A, Buffa M, Sancin P, Borgarello E. Seasonal Variations in Components of DriedGentiana luteaRoots from the Western Alpine Region. ACTA ACUST UNITED AC 2008. [DOI: 10.3109/13880208109065210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Simmons N, Daly C, Cummings T, Morgan S, Johnson N, Lombard A. Reassessing the principles of electrical stimulation. Meat Sci 2008; 80:110-22. [DOI: 10.1016/j.meatsci.2008.05.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 05/07/2008] [Accepted: 05/12/2008] [Indexed: 01/13/2023]
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Lombard A, Gauvrit C, Chauvel B. Chemical control of ambrosia Artemisiifolia on non-crop areas: are there alternatives to glyphosate? Commun Agric Appl Biol Sci 2005; 70:447-57. [PMID: 16637214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We compared glyphosate, glufosinate and metsulfuron-methyl to control Ambrosia artemisiifolia under non-crop conditions. A laboratory study showed that A. artemisiifolia is an easy-to-wet species and that glufosinate and glyphosate are quickly absorbed by its leaves (nearly 100% in 24 h). Metsulfuron-methyl absorption was slower (about 50% in 24 h) but was strongly promoted by terpenic alcohol and esterified rapeseed oil. In the greenhouse, all three herbicides were efficacious against A. artemisiifolia, with ED50s of <23, 23 and 0.8 g ha(-1) for glufosinate, glyphosate and metsulfuron-methyl, respectively. These results were confirmed on a non-crop area for glufosinate and glyphosate, which at half the registered dose reached high efficacies at both the 4 to 6-node and flowering stages of A. artemisiifolia. By contrast, metsulfuron-methyl showed no efficacy. However, after treatment at the 4- to 6-node stage, new emergence of A. artemisiifolia led to the presence of vigorous plants that bore numerous flowers and produced high levels of pollen. After treatment at the flowering stage, flower production by A. artemisiifolia was not significantly affected, but achene weight was decreased by 60 to 70% and seed viability was only 8 to 13% for the treated plants, as compared to 85% for the control. No significant difference was observed between the two herbicides and between the doses. It is concluded that glufosinate can be an alternative to glyphosate for the chemical control of A. artemisiifolia on non-crop areas. However, with both herbicides, it is difficult to attain the two objectives of reducing seed production and pollen production by means of only one treatment.
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Affiliation(s)
- A Lombard
- Unité mixte de recherche Biologie et Gestion des Adventices, INRA, BP 86510, F-21065 Dijon Cedex, France
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Abstract
This paper reports in vitro studies on the metabolic inversion of flurbiprofen (FL), an arylpropionic acid antiinflammatory agent (2-APA). The inversion was studied with both rac-FL and R-FL, by incubation with rat hepatic microsomes, in the presence of either CoASH and ATP or NADPH. The two isomers of the drug were separated as their (+)-(R)-1-phenylethylamides by direct phase high-performance liquid chromatography on a silica gel column with an achiral mobile phase. The inversion was more pronounced in the presence of CoASH and ATP for both the racemate and the R-isomer, which supports the key role of CoA thioesters in the metabolic inversion of profens. The inversion observed in the presence of NADPH suggests that, when the incubation is run with hepatic microsomes, a CYP450-mediated pathway is also active. In order to get more insight into the CYP450-mediated inversion pathway, we studied the effect of irradiating microsomes with a low dose of He-Ne laser radiation (0.2 J). Such irradiation caused a significant increase in inversion at all times studied and normalized the anomalous value of inversion observed at 15 min in this pathway.
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Affiliation(s)
- A Lombard
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Italy
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van der Merwe AS, Roos EC, Mulder M, Joubert A, Botha DE, Coetzee MH, Lombard A, van Niekerk A, Visser L. A formative model for student nurse development and evaluation--Part 1--Developing the model. Curationis 1996; 19:52-63. [PMID: 9283345 DOI: 10.4102/curationis.v19i4.1338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Preparing student nurses for the profession is a complex task for nurse educators; especially when dealing with the development of personal and interpersonal skills, qualities and values held in high esteem by the nursing profession and the community they serve. These researchers developed a model for formative evaluation of students by using the principles of inductive and deductive reasoning. This model was implemented in clinical practice situations and evaluated for its usefulness. It seems that the model enhanced the standards of nursing care because it had a positive effect on the behavior of students and they were better motivated; the model also improved interpersonal relationships and communication between practising nurses and students. The fact that students repeatedly use the model as a norm for self evaluation ensures that they are constantly reminded of the standards required of a professional nurse.
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Abstract
An improved method for the determination of glutamate decarboxylase (GAD) activity is described. The enzyme was evaluated by incubation with glutamic acid (L-Glu) in the presence of pyridoxal 5'-phosphate (PLP): the gamma-aminobutyric acid (GABA) formed was derivatized to PTC-GABA; the latter was subsequently separated and assayed by isocratic HPLC (LiChrospher RP-18 column; isocratic elution with pH 5.8 acetate buffer in acetonitrile-water) with UV absorbance detection at 254 nm. The method described is a sensitive, reproducible and specific assay useful for following variations of GAD activity in vitro; this assay was subsequently used for the evaluation of GAD activity variations after irradiation with low doses of He-Ne laser radiation.
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Affiliation(s)
- V Rossetti
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Torino, Italy
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Cassone MC, Lombard A, Rossetti V, Urciuoli R, Rolfo PM. Effect of in vivo He-Ne laser irradiation on biogenic amine levels in rat brain. J Photochem Photobiol B 1993; 18:291-4. [PMID: 8350195 DOI: 10.1016/1011-1344(93)80078-n] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In order to elucidate the metabolic modifications induced in rat brain by low power He-Ne laser irradiation in vivo, the variations in the biogenic amine levels in cortex, striatum and hippocampus were studied. Noradrenaline (NA), dopamine (DA) and serotonin (5-HT) were evaluated by HPLC-EC on irradiated rats, untreated rats (controls) and rats which had undergone restraint stress (stressed). The results obtained on groups of four to eight rats assayed individually showed that irradiation caused a strong increase in 5-HT in striatum and hippocampus, a small but significant decrease in NA in cortex, and DA levels were not significantly affected. Restraint stress per se led to a considerable decrease in 5-HT and DA in striatum and hippocampus, but did not significantly alter the NA levels.
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Affiliation(s)
- M C Cassone
- Istituto di Farmacologia e Farmacognosia, Facoltà di Farmacia, Università di Torin, Italy
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Rossetti V, Lombard A, Buffa M, Miglietta A, Oliviero A, Gadoni E. The in vitro metabolic inversion of R(-) to S(+) indoprofen. Eur J Drug Metab Pharmacokinet 1992; 17:183-6. [PMID: 1490486 DOI: 10.1007/bf03190143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The paper reports a study on the metabolic inversion of indoprofen (2-[4-(2-isoindolinyl-1-one)-phenyl]-propionic acid) following incubation of the drug with liver microsomes from non-induced and phenobarbital-induced rats. The enantiomeric composition of the drug was determined after different incubation times of the racemate and the individual isomers. The S(+)/R(-) ratio was evaluated by densitometry following HPTLC separation of the R(+)-1-phenylethylamides. After incubation of the racemate and the individual isomers, no detectable amounts of indoprofen catabolites were extracted from the acidified incubation mixture. An appreciable enrichment in the S(+) enantiomer was observed after incubation of both racemate and R(-)-indoprofen; the S(+)/R(-) ratio reached a maximum after 1 h. Values were higher in the case of induction. After incubation of S(+)-indoprofen, a small but statistically significant decrease of the S(+)/R(-) ratio was observed. The increase of the S(+)-isomer concentration observed following incubation of R(-)-indoprofen can be ascribed to metabolic inversion by phenobarbital-inducible liver enzymes.
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Affiliation(s)
- V Rossetti
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Italy
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Rossetti V, Lombard A, Urciuoli R, Cassone MC, Rolfo PM. Rat brain metabolism enzyme activity variations following He-Ne laser irradiation. Mol Chem Neuropathol 1991; 15:185-91. [PMID: 1776992 DOI: 10.1007/bf03159955] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In order to gain insight into the metabolic modifications induced in rat brain tissues by helium-neon (He-Ne) laser irradiation, in the research described here, we investigated the variations in the activity of the enzymes aspartate transferase (AST, EC 2.6.1.4), both cytosolic and mitochondrial, glutamate dehydrogenase (GIDH, EC 1.4.1.3), and total superoxide dismutase (SOD, EC 1.15.1.1), in the brain of rats treated with a very small dose (1.08 J) of He-Ne laser radiation. The rats were sacrificed 4 h after the treatment. The enzymes were evaluated spectrophotometrically in brain extracts of irradiated animals and also in untreated rats (controls) and rats that underwent simulated treatment (stressed). The data obtained from 5-10 animals assayed individually showed that, in the in toto brain tissues of the irradiated rats compared to the stressed rats, there was a marked increase of total SOD, together with an appreciable decrease of cytosolic AST, and insignificant variations in mitochondrial AST and GIDH. Stress alone caused a considerable decrease of total SOD and small but statistically significant increases of s-AST, m-AST, and GIDH.
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Affiliation(s)
- V Rossetti
- Dipartimento di Scienza e Tecnologia del Farmaco, Facoltà di Farmacia, Università di Torino, Italy
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Rossetti V, Lombard A, Sancin P, Buffa M. Characterization of Arnica montana L. flowers. Boll Chim Farm 1987; 126:458-61. [PMID: 3455222] [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: 01/05/2023]
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Lombard A. Evaluation and relevance of skin sensitivity in animal models. Br J Dermatol 1986; 115 Suppl 31:24-32. [PMID: 3741797 DOI: 10.1111/j.1365-2133.1986.tb02103.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Rossetti V, Lombard A, Buffa M. The HPTLC resolution of the enantiomers of some 2-arylpropionic acid anti-inflammatory drugs. J Pharm Biomed Anal 1986; 4:673-6. [PMID: 16867577 DOI: 10.1016/0731-7085(86)80014-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/1985] [Revised: 02/04/1986] [Indexed: 11/19/2022]
Affiliation(s)
- V Rossetti
- Istituto di Chimica Farmaceutica e Tossicologica, Università di Torino, Italy
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