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Moussa MD, Soquet J, Robin E, Labreuche J, Rousse N, Rauch A, Loobuyck V, Leroy G, Duburcq T, Gantois G, Leroy X, Ait-Ouarab S, Lamer A, Thellier L, Lukowiak O, Schurtz G, Muller C, Juthier F, Susen S, Vincentelli A. Definitions of major bleeding for predicting mortality in critically ill adult patients who survived 24 hours while supported with peripheral veno-arterial extracorporeal membrane oxygenation for cardiogenic shock: a comparative historical cohort study. Can J Anaesth 2024; 71:523-534. [PMID: 38438682 DOI: 10.1007/s12630-024-02704-6] [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: 09/25/2022] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 03/06/2024] Open
Abstract
PURPOSE The severity of bleeding events is heterogeneously defined during peripheral veno-arterial extracorporeal membrane oxygenation (pVA-ECMO). We studied three bleeding definitions in pVA-ECMO: the Extracorporeal Life Support Organization (ELSO)-serious bleeding, the Bleeding Academic Research Consortium (BARC), and the universal definition of postoperative bleeding (UPDB) classifications. METHODS We included consecutive adult patients supported by pVA-ECMO for refractory cardiogenic shock admitted to Lille academic hospitals between January 2013 and December 2019. We assessed the association of bleeding definitions with the primary endpoint of 28-day all-cause mortality with the use of multivariate models accounting for time-dependent and competing variables. We compared models' performances using the Harrell's C-Index and the Akaike information criteria. RESULTS Twenty-eight-day mortality occurred in 128/308 (42%) 308 patients. The ELSO-serious bleeding (hazard ratio [HR], 1.67; 95% confidence interval [CI], 1.09 to 2.56) and BARC ≥ type 2 (HR, 1.55; 95% CI, 1.01 to 2.37) were associated with 28-day mortality (Harrell's C-index, 0.69; 95% CI, 0.63 to 0.74 for both). Predictors of ELSO-serious bleeding were postcardiotomy, body mass index, baseline platelets count, fibrinogen, and hemoglobin levels. CONCLUSION Extracorporeal Life Support Organization-serious bleeding and BARC ≥ type 2 are relevant definitions of major bleeding regarding their association with mortality in critically ill patients who survived the first 24 hr while supported with pVA-ECMO for cardiogenic shock. STUDY REGISTRATION CERAR (IRB 00010254-2022-050, Paris, France); first submitted on 18 April 2022.
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Affiliation(s)
- Mouhamed D Moussa
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France.
- Pôle d'Anesthésie-Réanimation, CHU Lille, Lille, France.
- Service d'Anesthésie-Réanimation Cardiovasculaire et thoracique, Institut Cœur - Poumon, CHU Lille, 2 avenue Oscar Lambret, 59 037, Lille, France.
| | - Jérôme Soquet
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Department of Cardiac Surgery, CHU Lille, Lille, France
| | - Emmanuel Robin
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Pôle d'Anesthésie-Réanimation, CHU Lille, Lille, France
| | | | - Natacha Rousse
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Department of Cardiac Surgery, CHU Lille, Lille, France
| | - Antoine Rauch
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
| | - Valentin Loobuyck
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Department of Cardiac Surgery, CHU Lille, Lille, France
| | | | | | | | - Xavier Leroy
- Pôle d'Anesthésie-Réanimation, CHU Lille, Lille, France
| | | | - Antoine Lamer
- Pôle d'Anesthésie-Réanimation, CHU Lille, Lille, France
| | - Lise Thellier
- Pôle d'Anesthésie-Réanimation, CHU Lille, Lille, France
| | | | - Guillaume Schurtz
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Department of Cardiology, CHU Lille, Lille, France
| | | | - Francis Juthier
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Department of Cardiac Surgery, CHU Lille, Lille, France
| | - Sophie Susen
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
| | - André Vincentelli
- Institut Pasteur de Lille, Université de Lille, Inserm, CHU Lille, Lille, France
- Department of Cardiac Surgery, CHU Lille, Lille, France
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Colliandre L, Muller C. Bayesian Optimization in Drug Discovery. Methods Mol Biol 2024; 2716:101-136. [PMID: 37702937 DOI: 10.1007/978-1-0716-3449-3_5] [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] [Indexed: 09/14/2023]
Abstract
Drug discovery deals with the search for initial hits and their optimization toward a targeted clinical profile. Throughout the discovery pipeline, the candidate profile will evolve, but the optimization will mainly stay a trial-and-error approach. Tons of in silico methods have been developed to improve and fasten this pipeline. Bayesian optimization (BO) is a well-known method for the determination of the global optimum of a function. In the last decade, BO has gained popularity in the early drug design phase. This chapter starts with the concept of black box optimization applied to drug design and presents some approaches to tackle it. Then it focuses on BO and explains its principle and all the algorithmic building blocks needed to implement it. This explanation aims to be accessible to people involved in drug discovery projects. A strong emphasis is made on the solutions to deal with the specific constraints of drug discovery. Finally, a large set of practical applications of BO is highlighted.
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Frini O, Muller C. Revisiting fertility regulation and family ties in Tunisia. BMC Pregnancy Childbirth 2023; 23:88. [PMID: 36726068 PMCID: PMC9890736 DOI: 10.1186/s12884-023-05408-9] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 01/25/2023] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND We revisit fertility regulation in Tunisia by examining the role of the extended family. As marriage is the exclusive acknowledged childbearing context, we examine fertility analysis in Tunisia through the sequence: woman's marriage age, post-marriage delay in the first use of contraception, and past and current contraceptive use. We trace the family socio-economic influences that operate through these decisions. METHODS Using data from the 2001 PAP-FAM Tunisian survey, we estimate the duration and probability models of these birth control decisions. RESULTS In Tunisia, family ties and socio-cultural environment appear to hamper fertility regulation that operates through the above decisions. This is notably the case for couples whose marriages are arranged by the extended family or who benefit from financial support from both parental families. CONCLUSION This calls for family planning policies that address more the extended families.
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Affiliation(s)
- Olfa Frini
- grid.424444.60000 0001 1103 8547Institut Supérieur de Comptabilité & d’Administration Des Entreprises, Manouba University, Tunis, Tunisia
| | - Christophe Muller
- grid.5399.60000 0001 2176 4817Aix-Marseille Univ, CNRS, AMSE, Marseille, France
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Day C, Deetlefs M, O'Brien A, Smith J, Boyd M, Embling N, Patel S, Moody K, Ramabele T, Budge A, Tarwa T, Jim O, Maharaj T, Pandy S, Abrahams JM, Panieri A, Verhage S, Van der Merwe M, Geragotellis A, Amanjee W, Joseph C, Zhao Z, Moosa S, Bunting M, Pulani Y, Mukhari P, De Paiva M, Deyi G, Wonkam RP, Mancotywa N, Dunge A, Msimanga T, Singh A, Monnaruri O, Molale B, Butler TAG, Browde K, Muller C, Van der Walt J, Whitelaw R, Cronwright D, Sinha S, Binase U, Francis I, Boakye D, Dlamini S, Mendelson M, Peter J. Self-reported beta-lactam allergy in government and private hospitals in Cape Town, South Africa. S Afr Med J 2023; 113:69-74. [PMID: 36757070 DOI: 10.7196/samj.2023.v113i2.16760] [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] [Received: 02/01/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Up to a quarter of inpatients in high-income countries (HICs) self-report beta-lactam allergy (BLA), which if incorrect,increases the use of alternative antibiotics, worsening individual health outcomes and driving bacterial resistance. In HICs, up to 95% ofself-reported BLAs are incorrect. The epidemiology of BLA in low- and middle-income African countries is unknown. OBJECTIVES To describe the epidemiology and de-labelling outcomes of self-reported BLA in hospitalised South African (SA) patients. METHODS Point-prevalence surveys were conducted at seven hospitals (adult, paediatric, government and privately funded, district andtertiary level) in Cape Town, SA, between April 2019 and June 2021. Ward prescription records and in-person interviews were conductedto identify and risk-stratify BLA patients using the validated PEN-FAST tool. De-labelling was attempted at the tertiary allergy clinic atGroote Schuur Hospital. RESULTS A total of 1 486 hospital inpatients were surveyed (1 166 adults and 320 children). Only 48 patients (3.2%) self-reported a BLA,with a higher rate in private than in government-funded hospitals (6.3% v. 2.8%; p=0.014). Using the PEN-FAST tool, only 10.4% (n=5/48)of self-reported BLA patients were classified as high risk for true penicillin hypersensitivity. Antibiotics were prescribed to 70.8% (n=34/48)of self-reported BLA patients, with 64.7% (n=22/34) receiving a beta-lactam. Despite three attempts to contact patients for de-labelling atthe allergy clinic, only 3/36 underwent in vivo testing, with no positive results, and 1 patient proceeded to a negative oral challenge. CONCLUSION Unlike HICs, self-reported BLA is low among inpatients in SA. The majority of those who self-reported BLA were low risk fortype 1 hypersensitivity, but outpatient de-labelling efforts were largely unsuccessful.
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Affiliation(s)
- C Day
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, South Africa.
| | - M Deetlefs
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, South Africa.
| | - A O'Brien
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - J Smith
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - M Boyd
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - N Embling
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - S Patel
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - K Moody
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - T Ramabele
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - A Budge
- Department of Paediatrics, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - T Tarwa
- Molecular Mycobacteriology Research Unit, Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - O Jim
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - T Maharaj
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - S Pandy
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - J-M Abrahams
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, South Africa.
| | - A Panieri
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - S Verhage
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - M Van der Merwe
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - A Geragotellis
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - W Amanjee
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - C Joseph
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - Z Zhao
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - S Moosa
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - M Bunting
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - Y Pulani
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - P Mukhari
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - M De Paiva
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - G Deyi
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - R P Wonkam
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - N Mancotywa
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - A Dunge
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - T Msimanga
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - A Singh
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - O Monnaruri
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - B Molale
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - T A G Butler
- Department of Paediatrics, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - K Browde
- Division of Allergology and Clinical Immunology, Department of Paediatrics, Red Cross War Memorial Children's Hospital and Faculty of Health Sciences, University of Cape Town, South Africa.
| | - C Muller
- Allergy and Immunology Unit, University of Cape Town Lung Institute, Cape Town, South Africa.
| | - J Van der Walt
- Allergy and Immunology Unit, University of Cape Town Lung Institute, Cape Town, South Africa.
| | - R Whitelaw
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - D Cronwright
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - S Sinha
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - U Binase
- Faculty of Health Sciences, University of Cape Town, South Africa.
| | - I Francis
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - D Boakye
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - S Dlamini
- Division of Infectious Diseases and HIV Medicine, Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - M Mendelson
- Division of Infectious Diseases and HIV Medicine, Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - J Peter
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, South Africa; Allergy and Immunology Unit, University of Cape Town Lung Institute, Cape Town, South Africa.
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Muller C, Ardouin L, Fournier A, Gaisne E, Leroy M, Bellemère P. Pyrocarbon interposition implant after lunate resection in Kienböck's disease: A case series. Hand Surg Rehabil 2023; 42:34-39. [PMID: 36336267 DOI: 10.1016/j.hansur.2022.10.003] [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] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/22/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022]
Abstract
In advanced stages of Kienböck's disease, the lunate is no longer conservable. One of the surgical options is to resect the lunate and replace it with a prosthesis. The procedure consisted in lunate resection and interposition of a free APSI® or Pi2® pyrocarbon implant through a dorsal approach. Follow-up was clinical and radiological on QuickDASH and PRWE scores. At a median follow-up of 3 years, 12 patients were reviewed, with a median age of 56 years. Flexion significantly decreased from 42° to 28° (p < 0.01). Extension and pronation-supination were conserved. Strength was 94% compared to the opposite side, with no significant difference from the preoperative measurement. Median QuickDASH and PRWE scores were 15.9 and 23.5 respectively and had significantly improved. One patient underwent scaphocapitate fusion because she was still in pain; the other patients were pain-free. No patients had to change jobs because of their wrist. Radiographically, there was no carpal collapse and carpal height was conserved. Radioscaphoid angle and ulnar translation were stable. There was 1 case of asymptomatic implant dislocation. Interposition of a pyrocarbon implant after lunate resection in advanced Kienböck's disease is a motion-conserving procedure that provides pain relief and functional recovery in the short and medium term. LEVEL OF EVIDENCE: IV.
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Affiliation(s)
- C Muller
- Department of Hand Surgery, Plastic and Reconstructive Surgery, Centre Chirurgical Émile Gallé, CHU Nancy, 49 Rue Hermite, 54000 Nancy, France.
| | - L Ardouin
- Institut de la Main Nantes Atlantique, Boulevard Charles-Gautier, Saint-Herblain, France
| | - A Fournier
- Institut de la Main Nantes Atlantique, Boulevard Charles-Gautier, Saint-Herblain, France
| | - E Gaisne
- Institut de la Main Nantes Atlantique, Boulevard Charles-Gautier, Saint-Herblain, France
| | - M Leroy
- Institut de la Main Nantes Atlantique, Boulevard Charles-Gautier, Saint-Herblain, France
| | - P Bellemère
- Institut de la Main Nantes Atlantique, Boulevard Charles-Gautier, Saint-Herblain, France
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Muller C, Benseddik A, Gondim Teixeira PO, Athlani L. Incidental enchondroma of the radial diaphysis: A short report. Hand Surg Rehabil 2022; 41:658-659. [PMID: 35882367 DOI: 10.1016/j.hansur.2022.07.004] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/12/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Affiliation(s)
- C Muller
- Department of Hand Surgery, Plastic and Reconstructive Surgery, Centre Chirurgical Emile Gallé, Nancy University Hospital, 49 rue Hermite, 54000 Nancy, France.
| | - A Benseddik
- Department of Hand Surgery, Plastic and Reconstructive Surgery, Centre Chirurgical Emile Gallé, Nancy University Hospital, 49 rue Hermite, 54000 Nancy, France.
| | - P O Gondim Teixeira
- Guilloz Imaging Department, Central Hospital, Nancy University Hospital, 29 avenue du Maréchal de Lattre de Tassigny, 54035 Nancy, France.
| | - L Athlani
- Department of Hand Surgery, Plastic and Reconstructive Surgery, Centre Chirurgical Emile Gallé, Nancy University Hospital, 49 rue Hermite, 54000 Nancy, France.
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Tapolsky GH, Morris JC, Yilmaz E, Villano JL, Muller C, Curry, III RC, Puduvally VK, Wise-Draper TM, Takigiku R, Wesolowski R. P11.03.B BXQ-350: Modulating ceramide and Sphingosine-1-Phosphate for anti-tumor activity and potential mitigation of chemotherapy induced peripheral neuropathy. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.192] [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: 11/13/2022] Open
Abstract
Abstract
Background
Sphingolipids are a class of bioactive signaling molecules implicated in multiple cellular processes and molecular pathways. Many publications have indicated that among these sphingolipids, sphingosine-1-phosphate (S1P) is a key sphingolipid that promotes cancer cell survival and proliferation, activates multiple oncogenic pathways, and stimulates immuno-suppressor cell populations promoting a pro-tumoral microenvironment. Many of these publications have also implicated S1P with chemotherapy induced peripheral neuropathy, a debilitating and serious side effect that may impact therapeutic treatments and patient’s quality of life.
Material and Methods
BXQ-350 is a nanovesicle of Saposin C, an allosteric activator of sphingolipid metabolism, that has broad anticancer activity, potentially in part by lowering systemic S1P levels. BXQ-350 was investigated in a Phase 1 dose-escalation safety study in an all-comer cancer patients with advanced solid malignancies, including CNS tumors (NCT02859857) to determine its safety profile and its potential clinical activity as a single agent in cancer patients. Samples were collected to determine pharmacokinetics and explore potential biomarkers.
Results
11 patients (~15% of evaluable patients) with advanced disease had a clinical benefit and amongst these, 8 patients (~11% of evaluable patients) had PFS> 6 months with 2 patients still on study five years after enrollment. Analysis of patient’s samples revealed that BXQ-350 decreases systemic S1P levels in the majority of the patients experiencing a clinical benefit. In addition, several patients with established CIPN spontaneously reported improvements of their symptoms shortly after BXQ-350 administration. Analysis of these patients’ samples also revealed that S1P systemic levels had decreased, as well as pro-inflammatory cytokines associated with CIPN.
Conclusion
While these results are exploratory and preliminary in nature, they suggest that BXQ-350’s mechanism of action may represent a novel anti-cancer approach that may also mitigate CIPN.
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Affiliation(s)
- G H Tapolsky
- Bexion Pharmaceuticals , Covington, KY , United States
| | - J C Morris
- University of Cincinnati Cancer Institute , Cincinnati, OH , United States
| | - E Yilmaz
- Cleveland Clinic , Cleveland, OH , United States
| | - J L Villano
- University of Kentucky Cancer Center , Lexington, KY , United States
| | - C Muller
- University of New Mexico Cancer Center , Albuquerque, NM , United States
| | | | - V K Puduvally
- The University of Houston MD Anderson Cancer Center , Houston, TX , United States
| | - T M Wise-Draper
- University of Cincinnati Cancer Center , Cincinnati, OH , United States
| | - R Takigiku
- Bexion Pharmaceuticals , Covington, KY , United States
| | - R Wesolowski
- The Ohio State University Comprehensive Cancer Center , Columbus, OH , United States
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Roizman M, Hartel G, Wong A, Brown H, Muller C, Gillinder L. The impact of the first wave of COVID-19 on stroke admissions across three tertiary hospitals in Brisbane. Intern Med J 2022; 52:1322-1329. [PMID: 35608890 PMCID: PMC9347455 DOI: 10.1111/imj.15827] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/10/2022] [Indexed: 11/29/2022]
Abstract
Background COVID‐19 has caused a global shift in healthcare‐seeking behaviour; however, presentation rates with serious conditions, such as stroke in low COVID‐19‐prevalence cities, has received less attention. Aims To determine if there was a significant reduction in stroke admissions, delivery of acute reperfusion therapies, or increased delays to presentation during the first wave of the COVID‐19 pandemic. Methods A multicentre, retrospective, observational cohort study was performed across three tertiary hospitals in Brisbane, Australia. Cases were identified using ICD‐10 codes and then individually reviewed for eligibility using prespecified inclusion and exclusion criteria. All metrics were compared over 3 months from 1 March to 31 May 2020 with two corresponding 3‐month periods in 2018 and 2019. Results There was a mean of 2.15 (95% CI 1.87–2.48) stroke admissions per day in the examined pandemic months compared with 2.13 (95% CI 1.85–2.45) and 2.26 (95% CI 1.97–2.59) in March to May 2018 and 2019 respectively, with no significant difference found (P = 0.81). There was also no difference in rates of intravenous thrombolysis (P = 0.82), endovascular thrombectomy (P = 0.93) and time from last known well to presentation (P = 0.54). Conversely, daily emergency department presentations (including non‐stroke presentations) significantly reduced (P < 0.0001). Conclusions During the early months of the COVID‐19 pandemic there was no significant reduction in stroke presentations, use of acute reperfusion therapies or delays to presentation, despite a reduction in ED presentations for any cause. Our results differ from the global experience, with possible explanations, including differences in public health messaging and healthcare infrastructure.
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Affiliation(s)
- M Roizman
- Mater Centre for Neurosciences, Mater Hospital, Brisbane, Queensland, Australia.,Neurology Department, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,School of Clinical Medicine, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - G Hartel
- Statistics Unit, QIMR Berghofer Medical Research Institute
| | - A Wong
- Neurology Department, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,School of Clinical Medicine, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - H Brown
- Neurology Department, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,School of Clinical Medicine, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia.,Neurology Department, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - C Muller
- Neurology Department, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,School of Clinical Medicine, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - L Gillinder
- Mater Centre for Neurosciences, Mater Hospital, Brisbane, Queensland, Australia.,Mater Research Institute, The University of Queensland, Brisbane, Queensland, Australia.,Neurology Department, Princess Alexandra Hospital, Brisbane, Queensland, Australia
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Ganier L, Betzi S, Derviaux C, Roche P, Dessaux C, Muller C, Hoffer L, Morelli X, Borg JP. Discovery of Small-Molecule Inhibitors of the PTK7/β-Catenin Interaction Targeting the Wnt Signaling Pathway in Colorectal Cancer. ACS Chem Biol 2022; 17:1061-1072. [PMID: 35483008 DOI: 10.1021/acschembio.1c00826] [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: 12/24/2022]
Abstract
Colorectal cancer (CRC), the second cause of death due to cancer worldwide, is a major public health issue. The discovery of new therapeutic targets is thus essential. Pseudokinase PTK7 intervenes in the regulation of the Wnt/β-catenin pathway signaling, in part, through a kinase domain-dependent interaction with the β-catenin protein. PTK7 is overexpressed in CRC, an event associated with metastatic development and reduced survival of nonmetastatic patients. In addition, numerous alterations have been identified in CRC inducing constitutive activation of the Wnt/β-catenin pathway signaling through β-catenin accumulation. Thus, targeting the PTK7/β-catenin interaction could be of interest for future drug development. We have developed a NanoBRET screening assay recapitulating the interaction between PTK7 and β-catenin to identify compounds able to disrupt this protein-protein interaction. A high-throughput screening allowed us to identify small-molecule inhibitors targeting the Wnt pathway signaling and inducing antiproliferative and antitumor effects in vitro in CRC cells harboring β-catenin or adenomatous polyposis coli (APC) mutations. Thus, inhibition of the PTK7/β-catenin interaction could represent a new therapeutic strategy to inhibit cell growth dependent on the Wnt signaling pathway. Moreover, despite a lack of enzymatic activity of its tyrosine kinase domain, targeting the PTK7 kinase domain-dependent functions appears to be of interest for further therapeutic development.
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Affiliation(s)
- Laetitia Ganier
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe labellisée Ligue “Cell Polarity, Cell Signaling and Cancer”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Team “Integrative Structural and Chemical Biology”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Stephane Betzi
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Team “Integrative Structural and Chemical Biology”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, “HiTS/IPCdd─High Throughput Screening Platform”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Carine Derviaux
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, “HiTS/IPCdd─High Throughput Screening Platform”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Philippe Roche
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Team “Integrative Structural and Chemical Biology”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, “HiTS/IPCdd─High Throughput Screening Platform”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Charlotte Dessaux
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe labellisée Ligue “Cell Polarity, Cell Signaling and Cancer”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Christophe Muller
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, “HiTS/IPCdd─High Throughput Screening Platform”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Laurent Hoffer
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Team “Integrative Structural and Chemical Biology”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Xavier Morelli
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Team “Integrative Structural and Chemical Biology”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, “HiTS/IPCdd─High Throughput Screening Platform”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
| | - Jean-Paul Borg
- Aix Marseille Univ., CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe labellisée Ligue “Cell Polarity, Cell Signaling and Cancer”, 27 Blvd Lei Roure CS30059, 13273 Marseille Cedex 9, France
- Institut Universitaire de France, 17 Rue de France, 69100 Villeurbanne, France
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Rebeaud M, Bouche C, Fallone F, Attané C, Vaysse C, Muller C. Mise au point d’un système de culture 3D d’adipocytes mammaires primaires : un modèle innovant pour étudier l’impact de l’obésité sur le pronostic du cancer du sein. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.169] [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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11
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Muller C, Rabal O, Diaz Gonzalez C. Artificial Intelligence, Machine Learning, and Deep Learning in Real-Life Drug Design Cases. Methods Mol Biol 2021; 2390:383-407. [PMID: 34731478 DOI: 10.1007/978-1-0716-1787-8_16] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The discovery and development of drugs is a long and expensive process with a high attrition rate. Computational drug discovery contributes to ligand discovery and optimization, by using models that describe the properties of ligands and their interactions with biological targets. In recent years, artificial intelligence (AI) has made remarkable modeling progress, driven by new algorithms and by the increase in computing power and storage capacities, which allow the processing of large amounts of data in a short time. This review provides the current state of the art of AI methods applied to drug discovery, with a focus on structure- and ligand-based virtual screening, library design and high-throughput analysis, drug repurposing and drug sensitivity, de novo design, chemical reactions and synthetic accessibility, ADMET, and quantum mechanics.
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Affiliation(s)
- Christophe Muller
- Evotec (France) SAS, Computational Drug Discovery, Integrated Drug Discovery, Toulouse, France
| | - Obdulia Rabal
- Evotec (France) SAS, Computational Drug Discovery, Integrated Drug Discovery, Toulouse, France
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12
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Lebrun F, Violle N, Letourneur A, Muller C, Fischer N, Levilly A, Orset C, Sors A, Vivien D. Post-acute delivery of α5-GABAA antagonist, S 44819, improves functional recovery in juvenile rats following stroke. Exp Neurol 2021; 347:113881. [PMID: 34597681 DOI: 10.1016/j.expneurol.2021.113881] [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: 04/19/2021] [Revised: 09/21/2021] [Accepted: 09/24/2021] [Indexed: 11/04/2022]
Abstract
Hypo-excitability was reported in the peri-infarct tissue following stroke, an effect counteracted by a blockage of α5-GABAA receptors in adult rodents. Our present study aims to evaluate the effect of a selective α5-GABAA receptor antagonist, S 44819, in stroke in juvenile animals. We have set up and characterized an original model of transient ischemic stroke in 28 day-old Sprague-Dawley rats (45-min occlusion of the middle cerebral artery by intraluminal suture). In this model, S 44819 (1, 3 and 10 mg/kg, b.i.d) was orally administered from day 3 to day 16 after stroke onset. Sensorimotor recovery was assessed on day 1, day 9 and day 16 after stroke onset. Results show that rats treated with S 44819 at the doses of 3 and 10 mg/kg displayed a significant improvement of the neurological deficits (neuroscore) on day 9 and day 16, when compared with animals treated with vehicle. Grip-test data analysis reveals that rats treated with S 44819 at the dose of 3 mg/kg displayed a better recovery on day 9 and day 16. These results are in agreement with those previously observed in adult rats, demonstrating that targeting α5-GABAA receptors improves neurological recovery after stroke in juvenile rats.
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Affiliation(s)
- Florent Lebrun
- ETAP-Lab, STROK@LLIANCE, 13 Rue du Bois de la Champelle, 54500 Vandoeuvre-les-Nancy, France; Normandie Univ, UNICAEN, INSERM, GIP Cyceron, Institut Blood and Brain @Caen-Normandie (BB@C), UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), Caen, France
| | - Nicolas Violle
- ETAP-Lab, STROK@LLIANCE, 13 Rue du Bois de la Champelle, 54500 Vandoeuvre-les-Nancy, France
| | - Annelise Letourneur
- ETAP-Lab, STROK@LLIANCE, 13 Rue du Bois de la Champelle, 54500 Vandoeuvre-les-Nancy, France
| | - Christophe Muller
- ETAP-Lab, STROK@LLIANCE, 13 Rue du Bois de la Champelle, 54500 Vandoeuvre-les-Nancy, France
| | - Nicolas Fischer
- ETAP-Lab, STROK@LLIANCE, 13 Rue du Bois de la Champelle, 54500 Vandoeuvre-les-Nancy, France
| | - Anthony Levilly
- ESRP (European Stroke Research Platform), Centre Universitaire de Ressources Biologiques (CURB), Université Caen Basse Normandie, Caen, France
| | - Cyrille Orset
- Normandie Univ, UNICAEN, INSERM, GIP Cyceron, Institut Blood and Brain @Caen-Normandie (BB@C), UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), Caen, France; ESRP (European Stroke Research Platform), Centre Universitaire de Ressources Biologiques (CURB), Université Caen Basse Normandie, Caen, France
| | - Aurore Sors
- Institut de Recherches Internationales Servier, Suresnes, France
| | - Denis Vivien
- Normandie Univ, UNICAEN, INSERM, GIP Cyceron, Institut Blood and Brain @Caen-Normandie (BB@C), UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), Caen, France; Department of Clinical Research, CHU Caen-Normandie, Caen, France.
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Roumiguie M, Manceau C, Estève D, Belles C, Gilleron J, Bouloumié A, Malavaud B, Milhas D, Muller C. The adipose tissue that surrounds the prostate gland exhibits traits of hypoxic state that could contribute to its role in prostate cancer progression. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00799-5] [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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Moussa MD, Lamer A, Labreuche J, Brandt C, Mass G, Louvel P, Lecailtel S, Mesnard T, Deblauwe D, Gantois G, Nodea M, Desbordes J, Hertault A, Saddouk N, Muller C, Haulon S, Sobocinski J, Robin E. Mid-Term Survival and Risk Factors Associated With Myocardial Injury After Fenestrated and/or Branched Endovascular Aortic Aneurysm Repair. Eur J Vasc Endovasc Surg 2021; 62:550-558. [PMID: 33846076 DOI: 10.1016/j.ejvs.2021.02.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 07/20/2019] [Revised: 02/05/2021] [Accepted: 02/21/2021] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Myocardial injury after non-cardiac surgery (MINS) is an independent predictor of post-operative mortality in non-cardiac surgery patients and may increase health costs. Few data are available for MINS in vascular surgery patients, in general, and those undergoing fenestrated/branched endovascular aortic repairs (F/BEVAR), in particular. The incidence of MINS after F/BEVAR, the associated risk factors, and prognosis have not been determined. The aim of the present study was to help fill these knowledge gaps. METHODS A single centre, retrospective study was carried out at a high volume F/BEVAR centre in a university hospital. Adult patients who underwent F/BEVAR between October 2010 and December 2018 were included. A high sensitivity troponin T (HsTnT) assay was performed daily in the first few post-operative days. MINS was defined as a HsTnT level ≥ 14 ng/L (MINS14) or ≥ 20 ng/L (MINS20). After assessment of the incidence of MINS, survival up to two years was estimated in a Kaplan-Meier analysis and the groups were compared according to MINS status. A secondary aim was to identify predictors of MINS. RESULTS Of the 387 included patients, 240 (62.0%) had MINS14 and 166 (42.9%) had MINS20. In multivariable Cox models, both conditions were significantly associated with poor two year survival (MINS14: adjusted hazard ratio [aHR] 2.15, 95% confidence interval [CI] 1.10 - 4.19; MINS20: aHR 2.43, 95% CI 1.36 - 4.34). In a multivariable logistic regression, age, revised cardiac risk index, duration of surgery, pre-operative estimated glomerular filtration rate (eGFR), and haemoglobin level were independent predictors of MINS. CONCLUSION After F/BEVAR surgery, the incidence of MINS was particularly high, regardless of the definition considered (MINS14 or MINS20). MINS was significantly associated with poor two year survival. The modifiable predictors identified were duration of surgery, eGFR, and haemoglobin level.
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Affiliation(s)
- Mouhamed D Moussa
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France.
| | - Antoine Lamer
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France; Université Lille, INSERM, CHU Lille, CIC-IT 1403, Lille, France; Université Lille, CHU Lille, ULR 2694 - METRICS: Évaluation des Technologies de santé et des Pratiques médicales, Lille, France
| | - Julien Labreuche
- Université Lille, CHU Lille, ULR 2694 - METRICS: Évaluation des Technologies de santé et des Pratiques médicales, Lille, France; Université Lille, CHU Lille, Department of Biostatistics, Lille, France
| | - Caroline Brandt
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Guillaume Mass
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Paul Louvel
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Sylvain Lecailtel
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Thomas Mesnard
- CHU Lille, Aortic Centre, Vascular Surgery, Lille, France
| | - Delphine Deblauwe
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Guillaume Gantois
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Madalina Nodea
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Jacques Desbordes
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | | | - Noredine Saddouk
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Christophe Muller
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
| | - Stéphan Haulon
- CHU Lille, Aortic Centre, Vascular Surgery, Lille, France; Aortic Centre, Hôpital Marie Lannelongue, Université Paris Sud, Le Plessis-Robinson, France
| | - Jonathan Sobocinski
- CHU Lille, Aortic Centre, Vascular Surgery, Lille, France; Université Lille, INSERM U1008, CHU Lille, Lille, France
| | - Emmanuel Robin
- CHU Lille, Service d'Anesthésie-Réanimation cardiovasculaire et thoracique, pôle d'Anesthésie-Réanimation, Lille, France
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Didier K, Giusti D, Le Jan S, Terryn C, Muller C, Pham B, Le Naour R, Antonicelli F, Servettaz A. La NETose est associée aux complications vasculaires dans la sclérodermie systémique. Rev Med Interne 2020. [DOI: 10.1016/j.revmed.2020.10.095] [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: 11/28/2022]
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16
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Barthes J, Lagarrigue P, Riabov V, Lutzweiler G, Kirsch J, Muller C, Courtial EJ, Marquette C, Projetti F, Kzhyskowska J, Lavalle P, Vrana NE, Dupret-Bories A. Biofunctionalization of 3D-printed silicone implants with immunomodulatory hydrogels for controlling the innate immune response: An in vivo model of tracheal defect repair. Biomaterials 2020; 268:120549. [PMID: 33278685 DOI: 10.1016/j.biomaterials.2020.120549] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 05/29/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 12/23/2022]
Abstract
The recent advances in 3D-printed silicone (PDMS: polydimethylsiloxane) implants present prospects for personalized implants with highly accurate anatomical conformity. However, a potential adverse effect, such as granuloma formation due to immune reactions, still exists. One potential way to overcome this problem is to control the implant/host interface using immunomodulatory coatings. In this study, a new cytokine cocktail composed of interleukin-10 and prostaglandin-E2 was designed to decrease adverse immune reactions and promote tissue integration by fixing macrophages into M2 pro-healing phenotype for an extended period of time. In vitro, the cytokine cocktail maintained low levels of pro-inflammatory cytokine (TNF-α and IL-6) secretions and induced the secretion of IL-10 and the upregulation of multifunctional scavenging and sorting receptor stabilin-1, expressed by M2 macrophages. This cocktail was then loaded in a gelatine-based hydrogel to develop an immunomodulatory material that could be used as a coating for medical devices. The efficacy of this coating was demonstrated in an in vivo rat model during the reconstruction of a tracheal defect by 3D-printed silicone implants. The coating was stable on the silicone implants for over 2 weeks, and the controlled release of the cocktail components was achieved for at least 14 days. In vivo, only 33% of the animals with bare silicone implants survived, whereas 100% of the animals survived with the implant equipped with the immunomodulatory hydrogel. The presence of the hydrogel and the cytokine cocktail diminished the thickness of the inflammatory tissue, the intensity of both acute and chronic inflammation, the overall fibroblastic reaction, the presence of oedema and the formation of fibrinoid (assessed by histology) and led to a 100% survival rate. At the systemic level, the presence of immunomodulatory hydrogels significantly decreased pro-inflammatory cytokines such as TNF-α, IFN-γ, CXCL1 and MCP-1 levels at day 7 and significantly decreased IL-1α, IL-1β, CXCL1 and MCP-1 levels at day 21. The ability of this new immunomodulatory hydrogel to control the level of inflammation once applied to a 3D-printed silicone implant has been demonstrated. Such thin coatings can be applied to any implants or scaffolds used in tissue engineering to diminish the initial immune response, improve the integration and functionality of these materials and decrease potential complications related to their presence.
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Affiliation(s)
- J Barthes
- Institut National de La Santé et de La Recherche Médicale, INSERM UMR1121 "Biomaterials and Bioengineering", 11 Rue Humann, 67085, Strasbourg, France.
| | - P Lagarrigue
- Institut National de La Santé et de La Recherche Médicale, INSERM UMR1121 "Biomaterials and Bioengineering", 11 Rue Humann, 67085, Strasbourg, France
| | - V Riabov
- Institute for Transfusion Medicine and Immunology, Medical, Faculty Mannheim, University of Heidelberg, Theodor-Kutzer Ufer 1-3, 68167, Mannheim, Germany
| | - G Lutzweiler
- Institut National de La Santé et de La Recherche Médicale, INSERM UMR1121 "Biomaterials and Bioengineering", 11 Rue Humann, 67085, Strasbourg, France
| | - J Kirsch
- Institute for Transfusion Medicine and Immunology, Medical, Faculty Mannheim, University of Heidelberg, Theodor-Kutzer Ufer 1-3, 68167, Mannheim, Germany
| | - C Muller
- Institut National de La Santé et de La Recherche Médicale, INSERM UMR1121 "Biomaterials and Bioengineering", 11 Rue Humann, 67085, Strasbourg, France
| | - E-J Courtial
- 3d.FAB, Université Lyon1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, 43, Bd du 11 Novembre 1918, 69622, Villeurbanne cedex, France
| | - C Marquette
- 3d.FAB, Université Lyon1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, 43, Bd du 11 Novembre 1918, 69622, Villeurbanne cedex, France
| | - F Projetti
- Department of Pathology, 18 rue du general Catroux, 87039, Limoges Cedex 1, France
| | - J Kzhyskowska
- Institute for Transfusion Medicine and Immunology, Medical, Faculty Mannheim, University of Heidelberg, Theodor-Kutzer Ufer 1-3, 68167, Mannheim, Germany; German Red Cross Blood Service Baden-Württemberg - Hessen, Mannheim, Germany; National Research Tomsk State University, Tomsk, 634050, Russia
| | - P Lavalle
- Institut National de La Santé et de La Recherche Médicale, INSERM UMR1121 "Biomaterials and Bioengineering", 11 Rue Humann, 67085, Strasbourg, France
| | - N E Vrana
- Institut National de La Santé et de La Recherche Médicale, INSERM UMR1121 "Biomaterials and Bioengineering", 11 Rue Humann, 67085, Strasbourg, France; Spartha Medical, 14B rue de La Canardière, 67100, Strasbourg, France
| | - A Dupret-Bories
- Department of Otorhinolaryngology, Head and Neck Surgery, Institut Claudius Regaud, Institut Universitaire du Cancer Toulouse Oncopole, 31009, Toulouse, France.
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Shamekh S, Muller C, Duvel J, D'Andrea F. Self-Aggregation of Convective Clouds With Interactive Sea Surface Temperature. J Adv Model Earth Syst 2020; 12:e2020MS002164. [PMID: 33282117 PMCID: PMC7685139 DOI: 10.1029/2020ms002164] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 05/21/2023]
Abstract
This study investigates the feedbacks between an interactive sea surface temperature (SST) and the self-aggregation of deep convective clouds, using a cloud-resolving model in nonrotating radiative-convective equilibrium. The ocean is modeled as one layer slab with a temporally fixed mean but spatially varying temperature. We find that the interactive SST decelerates the aggregation and that the deceleration is larger with a shallower slab, consistent with earlier studies. The surface temperature anomaly in dry regions is positive at first, thus opposing the diverging shallow circulation known to favor self-aggregation, consistent with the slower aggregation. But surprisingly, the driest columns then have a negative SST anomaly, thus strengthening the diverging shallow circulation and favoring aggregation. This diverging circulation out of dry regions is found to be well correlated with the aggregation speed. It can be linked to a positive surface pressure anomaly (PSFC), itself the consequence of SST anomalies and boundary layer radiative cooling. The latter cools and dries the boundary layer, thus increasing PSFC anomalies through virtual effects and hydrostasy. Sensitivity experiments confirm the key role played by boundary layer radiative cooling in determining PSFC anomalies in dry regions, and thus the shallow diverging circulation and the aggregation speed.
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Affiliation(s)
- S. Shamekh
- Laboratoire de Météorologie Dynamique IPSL, École Normale Supérieure, PSL Research University, CNRSParisFrance
| | - C. Muller
- Laboratoire de Météorologie Dynamique IPSL, École Normale Supérieure, PSL Research University, CNRSParisFrance
| | - J.‐P. Duvel
- Laboratoire de Météorologie Dynamique IPSL, École Normale Supérieure, PSL Research University, CNRSParisFrance
| | - F. D'Andrea
- Laboratoire de Météorologie Dynamique IPSL, École Normale Supérieure, PSL Research University, CNRSParisFrance
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18
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Roumiguie M, Toulet A, Esteve D, Manceau C, Mlilhas D, Malavaud B, Muller C. Excessive ectopic accumulation of adipose tissue around the prostate: New risk factor for prostate cancer aggressiveness. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33012-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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19
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Bosc N, Muller C, Hoffer L, Lagorce D, Bourg S, Derviaux C, Gourdel ME, Rain JC, Miller TW, Villoutreix BO, Miteva MA, Bonnet P, Morelli X, Sperandio O, Roche P. Fr-PPIChem: An Academic Compound Library Dedicated to Protein-Protein Interactions. ACS Chem Biol 2020; 15:1566-1574. [PMID: 32320205 PMCID: PMC7399473 DOI: 10.1021/acschembio.0c00179] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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] [Indexed: 01/17/2023]
Abstract
Protein-protein interactions (PPIs) mediate nearly every cellular process and represent attractive targets for modulating disease states but are challenging to target with small molecules. Despite this, several PPI inhibitors (iPPIs) have entered clinical trials, and a growing number of PPIs have become validated drug targets. However, high-throughput screening efforts still endure low hit rates mainly because of the use of unsuitable screening libraries. Here, we describe the collective effort of a French consortium to build, select, and store in plates a unique chemical library dedicated to the inhibition of PPIs. Using two independent predictive models and two updated databases of experimentally confirmed PPI inhibitors developed by members of the consortium, we built models based on different training sets, molecular descriptors, and machine learning methods. Independent statistical models were used to select putative PPI inhibitors from large commercial compound collections showing great complementarity. Medicinal chemistry filters were applied to remove undesirable structures from this set (such as PAINS, frequent hitters, and toxic compounds) and to improve drug likeness. The remaining compounds were subjected to a clustering procedure to reduce the final size of the library while maintaining its chemical diversity. In practice, the library showed a 46-fold activity rate enhancement when compared to a non-iPPI-enriched diversity library in high-throughput screening against the CD47-SIRPα PPI. The Fr-PPIChem library is plated in 384-well plates and will be distributed on demand to the scientific community as a powerful tool for discovering new chemical probes and early hits for the development of potential therapeutic drugs.
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Affiliation(s)
- Nicolas Bosc
- Inserm U973 MTi, 25 rue Hélène Brion 75013 Paris
- Institut Pasteur, Unité de Bioinformatique Structurale, CNRS UMR3528, 28 rue du Dr Roux 75015 Paris
| | - Christophe Muller
- IPC Drug Discovery Platform, Institut Paoli-Calmettes, 232 Boulevard de Sainte-Marguerite, 13009, Marseille, France
| | - Laurent Hoffer
- CRCM, CNRS, INSERM, Institut Paoli-Calmettes, Aix-Marseille Univ, 13009 Marseille, France
| | - David Lagorce
- Université de Paris, INSERM US14, Plateforme Maladies Rares - Orphanet, 75014 Paris, France
| | - Stéphane Bourg
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 7311, BP 6759, 45067 Orléans. France
| | - Carine Derviaux
- IPC Drug Discovery Platform, Institut Paoli-Calmettes, 232 Boulevard de Sainte-Marguerite, 13009, Marseille, France
| | - Marie-Edith Gourdel
- Hybrigenics Services SAS, 1 rue Pierre Fontaine, 91000 Evry Courcouronnes, France
| | - Jean-Christophe Rain
- Hybrigenics Services SAS, 1 rue Pierre Fontaine, 91000 Evry Courcouronnes, France
| | - Thomas W. Miller
- IPC Drug Discovery Platform, Institut Paoli-Calmettes, 232 Boulevard de Sainte-Marguerite, 13009, Marseille, France
| | - Bruno O. Villoutreix
- Université de Lille, INSERM, Institut Pasteur de Lille, U1177 - Drugs and Molecules for living Systems, 59000 Lille, France
| | - Maria A. Miteva
- Inserm U1268 MCTR, CNRS UMR 8038 CiTCoM – Univ. De Paris, Faculté de Pharmacie de Paris, 75006 Paris, France
| | - Pascal Bonnet
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 7311, BP 6759, 45067 Orléans. France
| | - Xavier Morelli
- IPC Drug Discovery Platform, Institut Paoli-Calmettes, 232 Boulevard de Sainte-Marguerite, 13009, Marseille, France
- CRCM, CNRS, INSERM, Institut Paoli-Calmettes, Aix-Marseille Univ, 13009 Marseille, France
| | - Olivier Sperandio
- Inserm U973 MTi, 25 rue Hélène Brion 75013 Paris
- Institut Pasteur, Unité de Bioinformatique Structurale, CNRS UMR3528, 28 rue du Dr Roux 75015 Paris
| | - Philippe Roche
- CRCM, CNRS, INSERM, Institut Paoli-Calmettes, Aix-Marseille Univ, 13009 Marseille, France
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Clapé A, Muller C, Plée J, Viguier M, Vanhaecke C, Bernard P. Feasibility and healthcare costs of superpotent topical corticosteroid therapy in bullous pemphigoid: a prospective, observational study in an academic centre in France. Br J Dermatol 2020; 183:775-776. [PMID: 32320476 DOI: 10.1111/bjd.19151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A Clapé
- Department of Dermatology, Reims University Hospital, Reims, France
| | - C Muller
- Laboratory of Dermatology, Faculty of Medicine of Reims, EA 7509, IFR 53, URCA, Reims, France
| | - J Plée
- Department of Dermatology, Reims University Hospital, Reims, France
| | - M Viguier
- Department of Dermatology, Reims University Hospital, Reims, France.,Laboratory of Dermatology, Faculty of Medicine of Reims, EA 7509, IFR 53, URCA, Reims, France
| | - C Vanhaecke
- Department of Dermatology, Reims University Hospital, Reims, France
| | - P Bernard
- Department of Dermatology, Reims University Hospital, Reims, France.,Laboratory of Dermatology, Faculty of Medicine of Reims, EA 7509, IFR 53, URCA, Reims, France
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21
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Clapé A, Muller C, Antonicelli F, Vanhaecke C, Viguier M, Plée J, Bernard P. Enquête de pratique de la prise en charge de la pemphigoïde bulleuse : place et coût de la dermocorticothérapie forte. Ann Dermatol Venereol 2019. [DOI: 10.1016/j.annder.2019.09.096] [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: 11/29/2022]
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22
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Cerlinskaite K, Mebazaa A, Cinotti R, Wussler DN, Gayat E, Juknevicius V, Muller C, Kavoliuniene A, Celutkiene J. P785Unplanned readmissions after discharge increases risk of death in acute dyspnoea patients: non-cardiac is as severe as cardiac causes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0384] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Acute dyspnoea is a major reason for admission to the emergency department and has been associated with high rates of readmission and mortality. However, the association of readmission with mortality risk has not been widely studied in patients with acute dyspnoea.
Purpose
To determine whether unplanned readmission during first 6 months after discharge is associated with greater risk of death within 1 year in patients with acute dyspnoea.
Methods
Derivation cohort consisted of 1371 patients from the prospective observational study, which enrolled acute dyspnoea patients admitted to emergency departments of two university centres from 2015 to 2017 and discharged alive from the hospital. Cox regression analysis compared 1-year risk of death between readmitted vs. non-readmitted patients in the first 6 months after discharge. In addition, we studied this association in 1986 patients from a multicentre validation cohort, which included acute dyspnoea patients from 2006 to 2014. Sensitivity analysis was done in the subgroups divided by cause of index admission (acute heart failure [AHF] and non-AHF) and cause of the first readmission (cardiovascular [CV] or non-CV). The statistical analyses were performed using R statistical software. P value of <0.05 was considered statistically significant.
Results
In the derivation cohort 666 (49%) of patients were readmitted at 6 months and 282 (21%) died in 1 year. Readmitted patients died more frequently than non-readmitted patients (211 [32%] vs. 71 [10%], respectively, p<0.001). All-cause 6-month readmission was associated with an increased 1-year risk of death in a multivariate analysis in both the derivation cohort (adjusted hazard ratio (aHR) 3 [95% confidence interval (CI) 2.2–4], p<0.001) and the validation cohort (aHR 1.8 [95% CI 1.4–2.2], p<0.001). Moreover, deleterious effect of readmission on 1-year survival was equally observed in AHF and non-AHF patients, independent of whether the reason of first readmission was cardiovascular or non-CV, in both study cohorts. The results are displayed in Figure 1.
Figure 1. Main results of the study
Conclusions
Our data demonstrates that readmission is associated with a markedly increased risk of death within 1 year in patients presenting to the emergency department with acute dyspnoea. Furthermore, the detrimental relationship between outcomes is similar in non-cardiac and cardiac causes.
Acknowledgement/Funding
The work was supported by the Research Council of Lithuania, grant Nr. MIP-049/2015 and approved by Lithuanian Bioethics Committee, Nr. L-15-01.
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Affiliation(s)
- K Cerlinskaite
- Vilnius University, Clinic of Cardiac and Vascular diseases, Centre of Cardiology and Angiology, Vilnius, Lithuania
| | - A Mebazaa
- Hospital Lariboisiere, Inserm UMR-S 942 and Anesthesia and Critical Care Department, Paris, France
| | - R Cinotti
- University Hospital of Nantes, Department of Anesthesia and Critical Care, Nantes, France
| | - D N Wussler
- University Hospital Basel, Cardiology Department, Basel, Switzerland
| | - E Gayat
- Hospital Lariboisiere, Inserm UMR-S 942 and Anesthesia and Critical Care Department, Paris, France
| | - V Juknevicius
- Vilnius University, Clinic of Cardiac and Vascular diseases, Centre of Cardiology and Angiology, Vilnius, Lithuania
| | - C Muller
- University Hospital Basel, Cardiology Department, Basel, Switzerland
| | - A Kavoliuniene
- Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - J Celutkiene
- Vilnius University, Clinic of Cardiac and Vascular diseases, Centre of Cardiology and Angiology, Vilnius, Lithuania
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Muller C, Enomoto M, Buono A, Steiner JM, Lascelles BDX. Placebo-controlled pilot study of the effects of an eggshell membrane-based supplement on mobility and serum biomarkers in dogs with osteoarthritis. Vet J 2019; 253:105379. [PMID: 31685140 DOI: 10.1016/j.tvjl.2019.105379] [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: 11/16/2018] [Revised: 08/29/2019] [Accepted: 09/12/2019] [Indexed: 11/30/2022]
Abstract
Osteoarthritis (OA) is a debilitating disease in dogs. Non-steroidal anti-inflammatory drugs (NSAIDs) are commonly used to treat OA; however, many dogs do not obtain adequate pain relief with an NSAID alone. This pilot study evaluated the systemic anti-inflammatory and mobility enhancing effects of an eggshell membrane-based nutritional supplement in dogs with OA-associated pain and mobility impairment. Twenty-seven dogs with OA-associated pain were enrolled into a randomized, double-masked, placebo-controlled, proof of principle pilot study and received either placebo or an eggshell membrane-based nutritional supplement over a 12-week period. Inflammatory biomarkers (IL-2, IL-6, IL-8, tumor necrosis factor-α, C-reactive protein, S100A12, and N-methylhistamine) were measured at Day 0 and Day 84. Owner questionnaires (CBPI and LOAD) were completed at Day 0, Day 42, and Day 84. Differences between groups over time were calculated. Twenty-two dogs completed the pilot study. Inflammatory biomarker IL-2 decreased in the supplement group, compared to the placebo group. Although small, the difference was statistically significant at an alpha of 0.1 (P=0.069). LOAD scores were numerically lower in the supplement group, but not significantly different from the placebo group at Day 0. Day 84 LOAD scores were significantly lower in the supplement group compared to the placebo group (P=0.034). CBPI results did not show the same pattern. The changes in biomarkers and LOAD scores were small, and do not provide definitive evidence of positive effects. However, these pilot results provide a rationale for performing a larger placebo-controlled study of the potential effects of the eggshell membrane-based nutritional supplement.
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Affiliation(s)
- C Muller
- Translational Research in Pain (TRiP) Program, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, USA; Comparative Pain Research and Education Center, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, USA
| | - M Enomoto
- Translational Research in Pain (TRiP) Program, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, USA
| | - A Buono
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 4475 TAMU, College Station, TX, USA
| | - J M Steiner
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 4475 TAMU, College Station, TX, USA
| | - B D X Lascelles
- Translational Research in Pain (TRiP) Program, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, USA; Comparative Pain Research and Education Center, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, USA; Thurston Arthritis Center, UNC School of Medicine, 3300 Thurston Building, Chapel Hill, NC, USA; Center for Translational Pain Research, Department of Anesthesiology, Duke University, 132 Research Dr, Durham, NC, USA.
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24
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Muller C, Allanche T, Paillet P, Duhamel O, Goiffon V, Rizzolo S, Lépine T, Rousson J, Baudu JP, Macé JR, Desjonqueres H, Monsanglant Louvet C, Ouerdane Y, Boukenter A, Girard S. Investigations of the MGy dose level radiation effects on the photometric budget of a radiation-hardened CMOS-based camera. Appl Opt 2019; 58:6165-6172. [PMID: 31503942 DOI: 10.1364/ao.58.006165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 07/06/2019] [Indexed: 06/10/2023]
Abstract
We studied the impact of ionizing radiation at high dose levels (megagray, MGy) on the photometric budget of a radiation-resistant complementary metal oxide semi-conductor (CMOS)-based camera. This is achieved by measuring the radiation-induced degradation of each subpart, namely its illumination system, its optical system, and its CMOS image sensor. The acquired experimental results allow performing a rather realistic simulation of the radiation effects at the system level. Thanks to appropriate mitigation techniques, limited image darkening and color change are obtained at MGy dose levels. The presented results confirm the feasibility of a CMOS-based camera able to resist to MGy dose level of ionizing radiations with an acceptable degradation of the image quality, opening the way to its implementation in the most challenging harsh environments.
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Affiliation(s)
- Tae-Hwan Kim
- School of Economics, Yonsei University, Seoul, Korea
| | - Christophe Muller
- Aix-Marseille Univ, CNRS, EHESS, Ecole Centrale, AMSE, Marseille, France, Aix-en-Provence Cedex, France
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26
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Muller C, Gines JA, Conzemius M, Meyers R, Lascelles BDX. Evaluation of the effect of signalment and owner-reported impairment level on accelerometer-measured changes in activity in osteoarthritic dogs receiving a non-steroidal anti-inflammatory. Vet J 2018; 242:48-52. [PMID: 30503544 DOI: 10.1016/j.tvjl.2018.10.005] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 10/10/2018] [Accepted: 10/15/2018] [Indexed: 10/28/2022]
Abstract
In veterinary medicine, evaluation of osteoarthritis (OA) treatment efficacy remains challenging. Measurement of activity, utilizing accelerometers, provides a surrogate measure of pain through measuring effects on activity, and the objective data collected can be used to assess the efficacy of treatments. However, little is known about how dog characteristics impact the accelerometry-measured response to treatment. The objectives of this study were to evaluate the effect of signalment and initial impairment level on accelerometer-measured changes in activity in osteoarthritic dogs after receiving a non-steroidal anti-inflammatory (NSAID). Fifty-seven client-owned dogs with OA-associated pain and mobility impairment were administered meloxicam for 2 weeks, following a 2-week baseline, and spontaneous activity was measured using an Actical accelerometer unit. Signalment factors and disease variables were recorded (age, sex, weight, impairment level, forelimb or hindlimb pain). Initial degree of impairment had a significant effect on changes in weekly (P=0.009), weekday (P=0.044) activity following NSAID treatment. Greater initial impairment was associated with larger positive changes in activity. Degree of impairment should be taken into consideration during the development of a clinical trial. Appropriate selection of candidates based on initial degree of impairment may permit a greater treatment effect, therefore increasing the power of the study.
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Affiliation(s)
- C Muller
- Translational Research in Pain, Comparative Pain Research and Education Centre, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - J A Gines
- Department of Veterinary Clinical Sciences, Louisiana State University, School of Veterinary Medicine, Baton Rouge, LA, USA
| | - M Conzemius
- Clinical Investigation Center, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, USA
| | - R Meyers
- Translational Research in Pain, Comparative Pain Research and Education Centre, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - B D X Lascelles
- Translational Research in Pain, Comparative Pain Research and Education Centre, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA; Department of Veterinary Clinical Sciences, Louisiana State University, School of Veterinary Medicine, Baton Rouge, LA, USA; Center for Pain Research and Innovation, UNC School of Dentistry, Chapel Hill, NC, USA; Center for Translational Pain Research, Department of Anesthesiology, Duke University, Durham, NC, USA.
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Muller C, Garstka A, Kolb I, Richter S. Impact du renforcement de la prise en charge nutritionnelle du patient en hémodialyse chronique par ajout d’œufs durs en collation. Nephrol Ther 2018. [DOI: 10.1016/j.nephro.2018.07.111] [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: 11/25/2022]
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28
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Dimitrov Y, Chantrel F, Kribs M, Hannedouche T, Perrin P, Ott J, Imhoff O, Ismer M, Muller C, Cerrene X. Précarité socio-économique et prise en charge des insuffisants rénaux chroniques non dialysés. Nephrol Ther 2018. [DOI: 10.1016/j.nephro.2018.07.304] [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: 11/25/2022]
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29
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Riesenhuber M, Spannbauer A, Rauscha F, Schmidinger H, Pezawas T, Schukro C, Gwechenberger M, Khazen C, Andreas M, Laufer G, Stix G, Wrba T, Hengstenberg C, Muller C, Gyongyosi M. P6637Survival analysis in pacemaker patients: Independent mortality factors in a single-center large-scale study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6637] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Riesenhuber
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - A Spannbauer
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - F Rauscha
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - H Schmidinger
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - T Pezawas
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - C Schukro
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - M Gwechenberger
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - C Khazen
- Medical University of Vienna, Department of Cardiac Surgery, Vienna, Austria
| | - M Andreas
- Medical University of Vienna, Department of Cardiac Surgery, Vienna, Austria
| | - G Laufer
- Medical University of Vienna, Department of Cardiac Surgery, Vienna, Austria
| | - G Stix
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - T Wrba
- Medical University of Vienna, IT Systems & Communications, Vienna, Austria
| | - C Hengstenberg
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - C Muller
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
| | - M Gyongyosi
- Medical University of Vienna, Department of Cardiology, Vienna, Austria
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Hoffer L, Muller C, Roche P, Morelli X. Chemistry-driven Hit-to-lead Optimization Guided by Structure-based Approaches. Mol Inform 2018; 37:e1800059. [PMID: 30051601 DOI: 10.1002/minf.201800059] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 05/07/2018] [Accepted: 06/24/2018] [Indexed: 12/17/2022]
Abstract
For several decades, hit identification for drug discovery has been facilitated by developments in both fragment-based and high-throughput screening technologies. However, a major bottleneck in drug discovery projects continues to be the optimization of primary hits from screening campaigns in order to derive lead compounds. Computational chemistry or molecular modeling can play an important role during this hit-to-lead (H2L) stage by both suggesting putative optimizations and decreasing the number of compounds to be experimentally synthesized and evaluated. However, it is also crucial to consider the feasibility of organically synthesizing these virtually designed compounds. Furthermore, the generated molecules should have reasonable physicochemical properties and be medicinally relevant. This review focuses on chemistry-driven and structure-based computational methods that can be used to tackle the difficult problem of H2L optimization, with emphasis being placed on the strategy developed in our laboratory.
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Affiliation(s)
- Laurent Hoffer
- CNRS, Inserm, Institut Paoli-Calmettes, Aix-Marseille Univ, CRCM, Marseille, France
| | | | - Philippe Roche
- CNRS, Inserm, Institut Paoli-Calmettes, Aix-Marseille Univ, CRCM, Marseille, France
| | - Xavier Morelli
- CNRS, Inserm, Institut Paoli-Calmettes, Aix-Marseille Univ, CRCM, Marseille, France.,Institut Paoli-Calmettes, IPC Drug Discovery, Marseille, France
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31
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Hoffer L, Voitovich YV, Raux B, Carrasco K, Muller C, Fedorov AY, Derviaux C, Amouric A, Betzi S, Horvath D, Varnek A, Collette Y, Combes S, Roche P, Morelli X. Integrated Strategy for Lead Optimization Based on Fragment Growing: The Diversity-Oriented-Target-Focused-Synthesis Approach. J Med Chem 2018; 61:5719-5732. [PMID: 29883107 DOI: 10.1021/acs.jmedchem.8b00653] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Over the past few decades, hit identification has been greatly facilitated by advances in high-throughput and fragment-based screenings. One major hurdle remaining in drug discovery is process automation of hit-to-lead (H2L) optimization. Here, we report a time- and cost-efficient integrated strategy for H2L optimization as well as a partially automated design of potent chemical probes consisting of a focused-chemical-library design and virtual screening coupled with robotic diversity-oriented de novo synthesis and automated in vitro evaluation. The virtual library is generated by combining an activated fragment, corresponding to the substructure binding to the target, with a collection of functionalized building blocks using in silico encoded chemical reactions carefully chosen from a list of one-step organic transformations relevant in medicinal chemistry. The proof of concept was demonstrated using the optimization of bromodomain inhibitors as a test case, leading to the validation of several compounds with improved affinity by several orders of magnitude.
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Affiliation(s)
- Laurent Hoffer
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France
| | - Yuliia V Voitovich
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France.,Department of Organic Chemistry , Lobachevsky State University of Nizhni Novgorod , 23 Gagarin Avenue , 603950 Nizhni Novgorod , Russia
| | - Brigitt Raux
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France
| | - Kendall Carrasco
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France
| | - Christophe Muller
- IPC Drug Discovery Platform , Institut Paoli-Calmettes , 232 Boulevard de Sainte-Marguerite , 13009 Marseille , France
| | - Aleksey Y Fedorov
- Department of Organic Chemistry , Lobachevsky State University of Nizhni Novgorod , 23 Gagarin Avenue , 603950 Nizhni Novgorod , Russia
| | - Carine Derviaux
- IPC Drug Discovery Platform , Institut Paoli-Calmettes , 232 Boulevard de Sainte-Marguerite , 13009 Marseille , France
| | - Agnès Amouric
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France.,IPC Drug Discovery Platform , Institut Paoli-Calmettes , 232 Boulevard de Sainte-Marguerite , 13009 Marseille , France
| | - Stéphane Betzi
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France
| | - Dragos Horvath
- Laboratoire de Chemoinformatique, CNRS UMR7140 , 1 rue Blaise Pascal , 67000 Strasbourg , France
| | - Alexandre Varnek
- Laboratoire de Chemoinformatique, CNRS UMR7140 , 1 rue Blaise Pascal , 67000 Strasbourg , France
| | - Yves Collette
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France.,IPC Drug Discovery Platform , Institut Paoli-Calmettes , 232 Boulevard de Sainte-Marguerite , 13009 Marseille , France
| | - Sébastien Combes
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France
| | - Philippe Roche
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France
| | - Xavier Morelli
- CRCM, CNRS, Inserm, Institut Paoli-Calmettes , Aix-Marseille University , 13009 Marseille , France.,IPC Drug Discovery Platform , Institut Paoli-Calmettes , 232 Boulevard de Sainte-Marguerite , 13009 Marseille , France
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32
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Prazuck T, Pelletier C, Giraudeau G, Verdu S, Muller C, Paper T, Hocqueloux L. Performances du premier test rapide IgG rougeole (Biosynex Measles) : un premier pas vers une stratégie vaccinale personnalisée. Med Mal Infect 2018. [DOI: 10.1016/j.medmal.2018.04.353] [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: 11/30/2022]
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33
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Velecela Chuquilla VL, Muller C, Matinez Estrada F, Hastie N, Martinez-Estrada O. P252A genome wide transcriptomics approach reveals a novel Wt1/Slit/Robo pathway that is involved in the in the migratory process of epicardial cells during development. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.174] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- V L Velecela Chuquilla
- University of Edinburgh, Institute of Genetics and Molecular Medicine, Edinburgh, United Kingdom
| | - C Muller
- University of Barcelona, Department of Cell Biology, Celltec UB, Barcelona, Spain
| | | | - N Hastie
- University of Edinburgh, Institute of Genetics and Molecular Medicine, Edinburgh, United Kingdom
| | - O Martinez-Estrada
- University of Barcelona, Department of Cell Biology, Celltec UB and Institute of Biomedicine, Barcelona, Spain
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34
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Martinez-Estrada O, Velecela V, Torres-Cano A, Garcia-Melero A, Muller C, Reina M, Soriano FX, Hastie N, Martinez FO. 244A transcriptomic approach to elucidate new functions of Wt1 in the embryonic epicardium development. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.169] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- O Martinez-Estrada
- University of Barcelona, Department of Cell Biology, Physiology and Immunology, Barcelona, Spain
| | - V Velecela
- University of Edinburgh, MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, Edinburgh, United Kingdom
| | - A Torres-Cano
- University of Barcelona, Department of Cell Biology, Physiology and Immunology, Barcelona, Spain
| | - A Garcia-Melero
- University of Barcelona, Department of Cell Biology, Physiology and Immunology, Barcelona, Spain
| | - C Muller
- University of Barcelona, Department of Cell Biology, Physiology and Immunology, Barcelona, Spain
| | - M Reina
- University of Barcelona, Department of Cell Biology, Physiology and Immunology, Barcelona, Spain
| | - F X Soriano
- University of Barcelona, Department of Cell Biology, Physiology and Immunology, Barcelona, Spain
| | - N Hastie
- University of Edinburgh, MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, Edinburgh, United Kingdom
| | - F O Martinez
- University of Surrey, Department of Biochemical Science, Guildford, United Kingdom
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35
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Gonzales KL, Garcia GE, Jacob MM, Muller C, Nelson L, Manson SM. Patient-provider relationship and perceived provider weight bias among American Indians and Alaska Natives. Obes Sci Pract 2018; 4:76-84. [PMID: 29479467 PMCID: PMC5818742 DOI: 10.1002/osp4.135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 08/21/2017] [Accepted: 08/29/2017] [Indexed: 12/25/2022] Open
Abstract
Objective The objective of this study was to examine patient-provider relationships among American Indians and Alaska Native (AI/AN) patients by examining associations between patient activation, perceived provider weight bias and working alliance. Patient activation is generally defined as having the knowledge, skills and confidence to manage one's health. Methods Among a sample of 87 AI/AN adults presenting for general medical care at an urban clinic in the north-west region of the USA, ordinary least squares regression analysis was completed to examine associations. Results Better working alliance scores were associated with increased patient activation, while perceived provider weight bias was associated with reduced patient activation. In addition, those with class II obesity had decreased patient activation. Conclusion These findings point to the importance of a positive patient-provider relationship in AI/ANs. Optimal patient engagement and subsequent health outcomes warrant additional consideration of patients' perceptions of provider weight bias within the context of health promotion and interventions.
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Affiliation(s)
- K. L. Gonzales
- Oregon Health Sciences University‐Portland State University School of Public HealthPortland State UniversityPortlandORUSA
| | - G. E. Garcia
- Department of SociologyPortland State UniversityPortlandORUSA
| | - M. M. Jacob
- Department of Education Studies, College of EducationUniversity of OregonEugeneORUSA
| | - C. Muller
- Initiative for Research and Education to Advance Community HealthWashington State UniversitySeattleWAUSA
| | - L. Nelson
- Initiative for Research and Education to Advance Community HealthWashington State UniversitySeattleWAUSA
| | - S. M. Manson
- Centers for American Indian and Alaska Native HealthUniversity of Colorado DenverAuroraCOUSA
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Madzhidov TI, Khakimova AA, Nugmanov RI, Muller C, Marcou G, Varnek A. Prediction of Aromatic Hydroxylation Sites for Human CYP1A2 Substrates Using Condensed Graph of Reactions. BioNanoSci 2018. [DOI: 10.1007/s12668-017-0499-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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37
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Sanchez J, LeJan S, Muller C, François C, Renard Y, Durlach A, Bernard P, Reguiai Z, Antonicelli F. Implication des métalloprotéases matricielles (MMP) et du remodelage matriciel dans la réaction inflammatoire associée à l’hidradénite suppurée (HS). Ann Dermatol Venereol 2017. [DOI: 10.1016/j.annder.2017.09.113] [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: 11/28/2022]
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38
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Zeller T, Schurmann C, Schramm K, Muller C, Kwon S, Wild P, Iacoviello L, Karakas M, Schnabel R, Rotter J, Felix S, Guo X, Herder C, Blankenberg S, Homuth G. P4469Transcriptome-wide gene expression analysis identifies novel associations with blood pressure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4469] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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39
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D'Haens GR, Sandborn WJ, Zou G, Stitt LW, Rutgeerts PJ, Gilgen D, Jairath V, Hindryckx P, Shackelton LM, Vandervoort MK, Parker CE, Muller C, Pai RK, Levchenko O, Marakhouski Y, Horynski M, Mikhailova E, Kharchenko N, Pimanov S, Feagan BG. Randomised non-inferiority trial: 1600 mg versus 400 mg tablets of mesalazine for the treatment of mild-to-moderate ulcerative colitis. Aliment Pharmacol Ther 2017; 46:292-302. [PMID: 28568974 DOI: 10.1111/apt.14164] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/16/2017] [Accepted: 05/04/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND High concentration mesalazine formulations are more convenient than conventional low concentration formulations for the treatment of ulcerative colitis (UC). AIM To compare the efficacy and safety of 1600 mg and 400 mg tablet mesalazine formulations. METHODS Patients with mild-to-moderate active UC (Mayo Clinic Score >5; N=817) were randomised to 3.2 g of oral mesalazine, administered as two 1600 mg tablets once, or four 400 mg tablets twice daily. We hypothesised that treatment with the 1600 mg tablet was non-inferior (within a 10% margin) to the 400 mg tablet for induction of clinical and endoscopic remission at week 8. Open-label treatment with the 1600 mg tablet continued for 26-30 weeks based on induction response. Predictors of treatment response were also explored. RESULTS At week 8, remission occurred in 22.4% and 24.6% of patients receiving the 1600 mg and 400 mg tablets, respectively (absolute difference -2.2%, 95% CI: -8.1% to 3.8%, non-inferiority P=.005). Endoscopic and histopathologic disease activity, leucocyte concentration and age were significantly associated with clinical remission (P=.022, .042, .014 and .023, respectively). At week 38, 43.9% (296/675) of patients who continued treatment with the 1600 mg formulation were in remission, including 70.3% (142/202) of patients who received a reduced dose of mesalazine (1.6 g/d). The overall incidence of serious adverse events was low. CONCLUSIONS Induction therapy with 3.2 mg mesalazine using two 1600 mg tablets once-daily was statistically and clinically non-inferior to a twice-daily regimen using four 400 mg tablets (NCT01903252).
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Affiliation(s)
- G R D'Haens
- Amsterdam, The Netherlands.,London, ON, Canada
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Affiliation(s)
- Tae-Hwan Kim
- School of Economics, Yonsei University, Seoul, Korea
| | - Christophe Muller
- Aix-Marseille University (Aix-Marseille School of Economics), CNRS and EHESS, Aix-en-Provence Cedex, France
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41
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Adams S, Rixe O, McCance D, Lee J, Eberhardt S, Westgate S, Rutledge T, Muller C. Phase I study combining PARP-inhibition with immune checkpoint blockade in women with BRCA-deficient recurrent ovarian cancer. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Muller C, Michel V, Scacchi G, Côme GM. THERGAS: a computer program for the evaluation of thermochemical data of molecules and free radicals in the gas phase. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1995921154] [Citation(s) in RCA: 252] [Impact Index Per Article: 36.0] [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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43
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Hoummady S, Hua J, Muller C, Pouchelon JL, Blondot M, Gilbert C, Desquilbet L. Investigation of risk factors for mortality in aged guide dogs: A retrospective cohort study. Prev Vet Med 2016; 132:125-129. [PMID: 27616361 DOI: 10.1016/j.prevetmed.2016.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 04/06/2016] [Revised: 09/01/2016] [Accepted: 09/03/2016] [Indexed: 01/17/2023]
Abstract
The overall median lifespan of domestic dogs has been estimated to 9-12 years, but little is known about risk factors for mortality in aged and a priori healthy dogs. The objective of this retrospective cohort study was to determine which characteristics are associated with mortality in aged and a priori healthy guide dogs, in a retrospective cohort study of 116 guide dogs followed from a systematic geriatric examination at the age of 8-10 years old. A geriatric grid collected the clinical data and usual biological parameters were measured at the time of examination. Univariate (Kaplan-Meier estimates) and multivariable (Cox proportional hazard model) survival analyses were used to assess the associations with time to all-cause death. The majority of dogs were Golden Retrievers (n=48) and Labrador Retrievers (n=27). Median age at geriatric examination was 8.9 years. A total of 76 dogs died during follow-up, leading to a median survival time from geriatric examination of 4.4 years. After adjustment for demographic and biological variables, an increased alanine amionotransferase level (adjusted Hazard Ratio (adjusted HR), 6.2; 95% confidence interval [95%CI], 2.0-19.0; P<0.01), presenting skin nodules (adjusted HR, 1.9; 95% CI, 1.0-3.4; P=0.04), and not being a Labrador Retriever (adjusted HR, 3.3; 95%CI, 1.4-10; P<0.01) were independently associated with a shorter time to death. This study documents independent associations of alanine aminotransferase level, skin nodules and breed with mortality in aged guide dogs. These results may be useful for preventive medical care when conducting a geriatric examination in working dogs.
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Affiliation(s)
- S Hoummady
- UMR-CNRS-MNHN 7179, 1 avenue du Petit Chateau, 91800 Brunoy, France; Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, F-94704 Maisons-Alfort, France.
| | - J Hua
- Dr Locci veterinary clinic, Drancy F-93700, France
| | - C Muller
- Saint Bernard veterinary clinic, Lomme F-59160, France
| | - J L Pouchelon
- Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, F-94704 Maisons-Alfort, France
| | - M Blondot
- Ecole des Chiens Guides de Paris, 105 avenue de Saint-Maurice, F-75015 Paris, France
| | - C Gilbert
- UMR-CNRS-MNHN 7179, 1 avenue du Petit Chateau, 91800 Brunoy, France; Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, F-94704 Maisons-Alfort, France
| | - L Desquilbet
- UMR-CNRS-MNHN 7179, 1 avenue du Petit Chateau, 91800 Brunoy, France; Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, F-94704 Maisons-Alfort, France
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44
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Muller C, Dimitrov Y, Garstka A, Ott J, Léon E, Becmeur C, Krummel T, Bazin-Kara D, Imhoff O, Chantrel F, Hannedouche T. L’ultrafiltration influence-t-elle la fatigue ressentie par les patients hémodialysés ? Nephrol Ther 2016. [DOI: 10.1016/j.nephro.2016.07.092] [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: 10/21/2022]
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45
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Affiliation(s)
- C. Muller
- Departments of Dermatology and Rheumatology, Trousseau Hospital, University of Tours, Tours, France
| | - P. Goupille
- Departments of Dermatology and Rheumatology, Trousseau Hospital, University of Tours, Tours, France
| | - J.-P. Valat
- Departments of Dermatology and Rheumatology, Trousseau Hospital, University of Tours, Tours, France
| | - G. Lorette
- Departments of Dermatology and Rheumatology, Trousseau Hospital, University of Tours, Tours, France
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46
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Brunet J, Lemoine JP, Pesson B, Valot S, Sautour M, Dalle F, Muller C, Borni-Duval C, Caillard S, Moulin B, Pfaff AW, Razakandrainibe R, Abou-Bacar A, Favennec L, Candolfi E. Ruling out nosocomial transmission of Cryptosporidium in a renal transplantation unit: case report. BMC Infect Dis 2016; 16:363. [PMID: 27484187 PMCID: PMC4969980 DOI: 10.1186/s12879-016-1661-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 06/08/2016] [Indexed: 01/10/2023] Open
Abstract
Background Cryptosporidium spp. is a ubiquitous parasite affecting humans as well as domestic and wild vertebrates, causing diarrhea in both immunocompetent and immunocompromised hosts worldwide. Its transmission occurs primarily by the fecal-oral route. In humans, C. parvum and C. hominis are the most prevalent species, whereas immunocompetent and immunocompromised individuals can also be infected by other zoonotic species. Renal transplant patients are prone to develop cryptosporidiosis, which can induce severe and life-threatening diarrhea. Case presentation We report here a series of nearly concomitant cases of acute symptomatic cryptosporidiosis in three renal transplant patients attending the Strasbourg University Hospital Nephrology Unit. The clinical presentation was persistent diarrhea and acute renal failure. The diagnosis was confirmed by microscopic stool examination using a modified Ziehl-Neelsen staining method and species identification by molecular tools. All patients were treated with nitazoxanide and recovered from diarrhea after 14 days of therapy. Conclusion Genotypic species identification was not consistent with an epidemic context, thus underlining the need for genotyping to monitor at risk patients.
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Affiliation(s)
- J Brunet
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France. .,Institut de Parasitologie et Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Université de Strasbourg, 3 rue Koeberlé, F-67000, Strasbourg, France.
| | - J P Lemoine
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - B Pesson
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - S Valot
- Laboratoire de Parasitologie et de Mycologie, Plateau Technique de Biologie du CHU Dijon, 2 rue Angélique Ducoudray, BP 37013, F-21070, Dijon cedex, France
| | - M Sautour
- Laboratoire de Parasitologie et de Mycologie, Plateau Technique de Biologie du CHU Dijon, 2 rue Angélique Ducoudray, BP 37013, F-21070, Dijon cedex, France.,UMR 1347, Université de Bourgogne, 17 rue de Sully, F-21000, Dijon, France
| | - F Dalle
- Laboratoire de Parasitologie et de Mycologie, Plateau Technique de Biologie du CHU Dijon, 2 rue Angélique Ducoudray, BP 37013, F-21070, Dijon cedex, France.,UMR 1347, Université de Bourgogne, 17 rue de Sully, F-21000, Dijon, France
| | - C Muller
- Département de Néphrologie et Transplantation, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - C Borni-Duval
- Département de Néphrologie et Transplantation, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - S Caillard
- Département de Néphrologie et Transplantation, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - B Moulin
- Département de Néphrologie et Transplantation, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - A W Pfaff
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France.,Institut de Parasitologie et Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Université de Strasbourg, 3 rue Koeberlé, F-67000, Strasbourg, France
| | - R Razakandrainibe
- Laboratoire de Parasitologie-Mycologie, EA 3800, Centre Hospitalier Universitaire, Université de Rouen, 1, rue de Germont, F-76031, Rouen, France
| | - A Abou-Bacar
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France
| | - L Favennec
- Laboratoire de Parasitologie-Mycologie, EA 3800, Centre Hospitalier Universitaire, Université de Rouen, 1, rue de Germont, F-76031, Rouen, France
| | - E Candolfi
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, 1 place de l'Hôpital, BP 426, F-67091, Strasbourg cedex, France.,Institut de Parasitologie et Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Université de Strasbourg, 3 rue Koeberlé, F-67000, Strasbourg, France
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47
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de Moor JM, Aiuppa A, Avard G, Wehrmann H, Dunbar N, Muller C, Tamburello G, Giudice G, Liuzzo M, Moretti R, Conde V, Galle B. Turmoil at Turrialba Volcano (Costa Rica): Degassing and eruptive processes inferred from high-frequency gas monitoring. J Geophys Res Solid Earth 2016; 121:5761-5775. [PMID: 27774371 DOI: 10.1002/2016jb013150.received] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 06/29/2016] [Accepted: 07/01/2016] [Indexed: 05/26/2023]
Abstract
Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high-frequency gas monitoring to track the behavior of the volcano between 2014 and 2015 and to decipher magmatic versus hydrothermal contributions to the eruptions. Pulses of deeply derived CO2-rich gas (CO2/Stotal > 4.5) precede explosive activity, providing a clear precursor to eruptive periods that occurs up to 2 weeks before eruptions, which are accompanied by shallowly derived sulfur-rich magmatic gas emissions. Degassing modeling suggests that the deep magmatic reservoir is ~8-10 km deep, whereas the shallow magmatic gas source is at ~3-5 km. Two cycles of degassing and eruption are observed, each attributed to pulses of magma ascending through the deep reservoir to shallow crustal levels. The magmatic degassing signals were overprinted by a fluid contribution from the shallow hydrothermal system, modifying the gas compositions, contributing volatiles to the emissions, and reflecting complex processes of scrubbing, displacement, and volatilization. H2S/SO2 varies over 2 orders of magnitude through the monitoring period and demonstrates that the first eruptive episode involved hydrothermal gases, whereas the second did not. Massive degassing (>3000 T/d SO2 and H2S/SO2 > 1) followed, suggesting boiling off of the hydrothermal system. The gas emissions show a remarkable shift to purely magmatic composition (H2S/SO2 < 0.05) during the second eruptive period, reflecting the depletion of the hydrothermal system or the establishment of high-temperature conduits bypassing remnant hydrothermal reservoirs, and the transition from phreatic to phreatomagmatic eruptive activity.
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Affiliation(s)
- J Maarten de Moor
- Observatorio Vulcanológico y Sismológico de Costa Rica Universidad Nacional Heredia Costa Rica; Department of Earth and Planetary Sciences University of New Mexico Albuquerque New Mexico USA; Dipartimento DiSTeM Università di Palermo Palermo Italy
| | - A Aiuppa
- Dipartimento DiSTeM Università di Palermo Palermo Italy; Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Palermo Italy
| | - G Avard
- Observatorio Vulcanológico y Sismológico de Costa Rica Universidad Nacional Heredia Costa Rica
| | - H Wehrmann
- GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel Germany
| | - N Dunbar
- New Mexico Bureau of Geology & Mineral Resources Earth and Environmental Science Department Socorro New Mexico USA
| | - C Muller
- Observatorio Vulcanológico y Sismológico de Costa Rica Universidad Nacional Heredia Costa Rica; School of Earth Sciences University of Bristol Bristol UK
| | - G Tamburello
- Dipartimento DiSTeM Università di Palermo Palermo Italy
| | - G Giudice
- Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Palermo Italy
| | - M Liuzzo
- Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Palermo Italy
| | - R Moretti
- Dipartimento di Ingegneria Civile Design Edilizia e Ambiente Seconda Università degli Studi di Napoli Naples Italy
| | - V Conde
- Department of Earth and Space Sciences Chalmers University of Technology Göteborg Sweden
| | - B Galle
- Department of Earth and Space Sciences Chalmers University of Technology Göteborg Sweden
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48
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de Moor JM, Aiuppa A, Avard G, Wehrmann H, Dunbar N, Muller C, Tamburello G, Giudice G, Liuzzo M, Moretti R, Conde V, Galle B. Turmoil at Turrialba Volcano (Costa Rica): Degassing and eruptive processes inferred from high-frequency gas monitoring. J Geophys Res Solid Earth 2016; 121:5761-5775. [PMID: 27774371 PMCID: PMC5054823 DOI: 10.1002/2016jb013150] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 06/29/2016] [Accepted: 07/01/2016] [Indexed: 05/26/2023]
Abstract
Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high-frequency gas monitoring to track the behavior of the volcano between 2014 and 2015 and to decipher magmatic versus hydrothermal contributions to the eruptions. Pulses of deeply derived CO2-rich gas (CO2/Stotal > 4.5) precede explosive activity, providing a clear precursor to eruptive periods that occurs up to 2 weeks before eruptions, which are accompanied by shallowly derived sulfur-rich magmatic gas emissions. Degassing modeling suggests that the deep magmatic reservoir is ~8-10 km deep, whereas the shallow magmatic gas source is at ~3-5 km. Two cycles of degassing and eruption are observed, each attributed to pulses of magma ascending through the deep reservoir to shallow crustal levels. The magmatic degassing signals were overprinted by a fluid contribution from the shallow hydrothermal system, modifying the gas compositions, contributing volatiles to the emissions, and reflecting complex processes of scrubbing, displacement, and volatilization. H2S/SO2 varies over 2 orders of magnitude through the monitoring period and demonstrates that the first eruptive episode involved hydrothermal gases, whereas the second did not. Massive degassing (>3000 T/d SO2 and H2S/SO2 > 1) followed, suggesting boiling off of the hydrothermal system. The gas emissions show a remarkable shift to purely magmatic composition (H2S/SO2 < 0.05) during the second eruptive period, reflecting the depletion of the hydrothermal system or the establishment of high-temperature conduits bypassing remnant hydrothermal reservoirs, and the transition from phreatic to phreatomagmatic eruptive activity.
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Affiliation(s)
- J. Maarten de Moor
- Observatorio Vulcanológico y Sismológico de Costa RicaUniversidad NacionalHerediaCosta Rica
- Department of Earth and Planetary SciencesUniversity of New MexicoAlbuquerqueNew MexicoUSA
- Dipartimento DiSTeMUniversità di PalermoPalermoItaly
| | - A. Aiuppa
- Dipartimento DiSTeMUniversità di PalermoPalermoItaly
- Istituto Nazionale di Geofisica e VulcanologiaSezione di PalermoPalermoItaly
| | - G. Avard
- Observatorio Vulcanológico y Sismológico de Costa RicaUniversidad NacionalHerediaCosta Rica
| | - H. Wehrmann
- GEOMAR Helmholtz Centre for Ocean Research KielKielGermany
| | - N. Dunbar
- New Mexico Bureau of Geology & Mineral ResourcesEarth and Environmental Science DepartmentSocorroNew MexicoUSA
| | - C. Muller
- Observatorio Vulcanológico y Sismológico de Costa RicaUniversidad NacionalHerediaCosta Rica
- School of Earth SciencesUniversity of BristolBristolUK
| | - G. Tamburello
- Dipartimento DiSTeMUniversità di PalermoPalermoItaly
| | - G. Giudice
- Istituto Nazionale di Geofisica e VulcanologiaSezione di PalermoPalermoItaly
| | - M. Liuzzo
- Istituto Nazionale di Geofisica e VulcanologiaSezione di PalermoPalermoItaly
| | - R. Moretti
- Dipartimento di Ingegneria Civile DesignEdilizia e Ambiente Seconda Università degli Studi di NapoliNaplesItaly
| | - V. Conde
- Department of Earth and Space SciencesChalmers University of TechnologyGöteborgSweden
| | - B. Galle
- Department of Earth and Space SciencesChalmers University of TechnologyGöteborgSweden
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Lux-Battistelli C, Muller C, Moragny J, Henquinet T. [Caustic necrosis due to topical formic acid 85% (Objectif ZeroVerrue(®))]. Ann Dermatol Venereol 2016; 143:543-6. [PMID: 27174715 DOI: 10.1016/j.annder.2016.03.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/07/2016] [Accepted: 03/17/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND Formic acid 85% constitutes the active substance of a new wart removal agent marketed in France under the name of Objectif ZeroVerrue(®), a product sold over-the-counter for adults and children aged over four years, and on a doctor's recommendation for children aged under four years. Its mechanism of action may involve cellular destruction through dehydration. PATIENTS AND METHODS Herein we report two cases of cutaneous necrosis following application of formic acid 85%. One case was severe, affecting the extremity of the middle finger and involving the underlying extensor apparatus in a girl aged 3 and a half years. This necrosis required the creation of a pedicled fasciocutaneous flap and temporary arthroereisis. DISCUSSION The precautions for use set out in the information leaflet for this preparation based on formic acid must be strictly adhered to by patients. In particular, only one application should be made per week, taking care to avoid adjacent skin. It is essential to suspend treatment if the skin is still erythematous after the previous application, and the treated area must not be occluded with bandages. Doctors must be aware of the risk of necrosis, since their recommendation is required for children under the age of four years.
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Affiliation(s)
| | - C Muller
- Centre régional de pharmacovigilance, hôpital Civil, 1, place de l'Hôpital, 67000 Strasbourg, France
| | - J Moragny
- Centre régional de pharmacovigilance, CHU Amiens Sud, 80054 Amiens cedex 1, France
| | - T Henquinet
- Cabinet, 36, rue de Lectoure, 68300 Saint-Louis, France
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Simon C, Agier MS, Béné J, Muller C, Vrignaud L, Marret H, Jonville-Bera AP. [Safety profile of etonogestrel contraceptive implant (Nexplanon ® and Implanon ®) reported in France]. ACTA ACUST UNITED AC 2016; 45:1074-1082. [PMID: 27125380 DOI: 10.1016/j.jgyn.2016.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/18/2016] [Accepted: 03/22/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVES The aim of the study was to assess the incidence of adverse effects (AE) reported with etonogestrel contraceptive implant in France (Implanon® and Nexplanon®). MATERIALS AND METHODS All cases of AE or unintended pregnancies reported to health authorities or to the firm were analyzed. RESULTS During 10 years, 5433 AE and 789 unintended pregnancies were reported. Only 388 (7 %) were serious. There were 1137 reports of difficulties to remove, failure to locate or migration, 430 of insertion difficulties and 203 of deformation or expulsion of the implant. Among other AE, the most common were 1694 gynecological AE, 524 skin reactions and 437 metabolic AE. Since the marketing of Nexplanon® which causes less deep insertions, the incidence of migrations, removal or insertion difficulties has decreased overall (0.92 vs. 1.31/1000 patients), particularly the incidence of removal difficulties, location failures or migrations (0.12 vs 1.01/1000). The infrequent but serious AE were infectious complications at the implant site and pregnancies. When the circumstances of the pregnancy were known, the contraceptive failure was due to the apparent inefficiency of the implant (n=224), to a technique failure (n=203) or to a drug-drug interaction (n=59). CONCLUSION This study confirms that AE of this implant are frequent but not serious, except for the pregnancies. The incidence of complications related to insertion decreased with Nexplanon®. Among other preventable AE, unintended pregnancies due to a drug-drug interaction would require to be better known by the practitioner.
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Affiliation(s)
- C Simon
- Service de pharmacologie, centre régional de pharmacovigilance, de pharmacoépidémiologie et d'information sur le médicament, CHRU, 2, boulevard Tonnellé, 37044 Tours cedex 9, France
| | - M S Agier
- Service de pharmacologie, centre régional de pharmacovigilance, de pharmacoépidémiologie et d'information sur le médicament, CHRU, 2, boulevard Tonnellé, 37044 Tours cedex 9, France
| | - J Béné
- Service de pharmacologie, centre régional de pharmacovigilance, CHRU de Lille, 59045 Lille, France
| | - C Muller
- Centre régional de pharmacovigilance, hôpital Civil, 67091 Strasbourg, France
| | - L Vrignaud
- Service de pharmacologie, centre régional de pharmacovigilance, de pharmacoépidémiologie et d'information sur le médicament, CHRU, 2, boulevard Tonnellé, 37044 Tours cedex 9, France
| | - H Marret
- Service de gynécologie, CHRU, 2, boulevard Tonnellé, 37044 Tours cedex 9, France; Université François-Rabelais, 37032 Tours, France
| | - A P Jonville-Bera
- Service de pharmacologie, centre régional de pharmacovigilance, de pharmacoépidémiologie et d'information sur le médicament, CHRU, 2, boulevard Tonnellé, 37044 Tours cedex 9, France.
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