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Brugel M, Marulier T, Evrard C, Carlier C, Tougeron D, Piessen G, Truant S, Turpin A, Williet N, Botsen D, Brasseur M, Perrier M, Bouché O. Genetic counselling referral practices for patients with pancreatic adenocarcinoma: A French retrospective multicentre observational cohort study (CAPANCOGEN). Pancreatology 2023; 23:622-629. [PMID: 37394294 DOI: 10.1016/j.pan.2023.06.010] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND/OBJECTIVES Genetic counselling (GC) is a key step in the identification of inherited germline mutations. However, the oncogenetic practices are poorly described for pancreatic adenocarcinoma (PA) in Europe. The CAPANCOGEN study aimed to describe the GC referral practices in France and assess the implementation of international guidelines in patients with PA. METHODS Information about GC referrals with PA was collected in 13 French centres from September 2019 to October 2021. In the 5 largest centres, personal and familial histories of cancers and diseases associated with a higher risk of germline mutations were collected in 460 patients, according to international, American, European and French GC referral guidelines. Univariate and multivariate logistic regression analysis were performed to identify the factors influencing GC referral. RESULTS Among 833 patients, a total of 100 patients (12%) had an indication of GC according to local multidisciplinary tumour board meetings (MTBM). Among these patients, 41% did not undergo GC. The median time between MTBM and GC was 55 days (IQR: 14.5-112). Among 460 patients with collected personal and familial history, 31.5% were not referred to a GC despite an existing indication. In multivariate logistic regression analysis, suspected CDKN2A (p = 0.032) or BRCA mutation (p < 0.001), familial pancreatic cancer history (p < 0.001) and controlled disease with first-line platinum-based chemotherapy (p < 0.001) increased the referral rate. Conversely, older age (p = 0.002) and a locally advanced PA (p = 0.045) decreased the risk of GC referral. CONCLUSIONS GC referral is inadequate despite valuable information in patients' medical files.
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Affiliation(s)
- Mathias Brugel
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France.
| | - Thibault Marulier
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France
| | - Camille Evrard
- Department of Medical Oncology, Poitiers University Hospital, Poitiers, France
| | - Claire Carlier
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France; Department of Medical Oncology, Godinot Cancer Institute, Reims, France
| | - David Tougeron
- Department of Hepato-Gastro-enterology, Poitiers University Hospital, Poitiers, France
| | - Guillaume Piessen
- Department of Digestive and Oncological Surgery, CHRU Lille, CANTHER Laboratory Inserm UMR-S1277, University of Lille, Lille, France
| | - Stéphanie Truant
- Department of Digestive Surgery and Liver Transplantation Department, CHRU Lille, CANTHER Laboratory Inserm UMR-S1277, University of Lille, Lille, France
| | - Anthony Turpin
- Department of Medical Oncology, CHU Lille, University of Lille, CNRS, Inserm, Institut Pasteur de Lille, UMR9020 - UMR-S 1277, Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, Lille, France
| | - Nicolas Williet
- Department of Hepatogastroenterology, CHU Saint Etienne, Saint-Priest-en-Jarez, France
| | - Damien Botsen
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France; Department of Medical Oncology, Godinot Cancer Institute, Reims, France
| | - Mathilde Brasseur
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France
| | - Marine Perrier
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France
| | - Olivier Bouché
- Université de Reims Champagne-Ardenne, Department of Digestive Oncology, CHU Reims, Reims, France
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Le Bozec A, Guédon M, Brugel M, Laurent M, Carlier C, Hettler D, Perrier M, Aubert L, Slimano F, Mongaret C, Bouché O. Prevalence of cannabidiol (CBD) consumption and cancer patients' expectations in one oncology day-hospital: A cross-sectional study and questionnaire validation. J Oncol Pharm Pract 2023:10781552231187136. [PMID: 37437182 DOI: 10.1177/10781552231187136] [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] [Indexed: 07/14/2023]
Abstract
INTRODUCTION The growing interest of cannabidiol (CBD) in medical care prompted French health authorities to explore the potential of CBD in cancer-related severe symptoms. This study aimed to assess the prevalence of CBD use among cancer patients with potential associated factors and to measure the cancer patient's health literacy (HL) on CBD consumption. METHODS In a prospective study in oncology day-care hospital including patients from 29 October to 20 December 2021, we collected demographic, biological, and oncological characteristics. Patient CBD HL was measured by the hetero-questionnaire 8-item-CBD HL scale (HLS-8-CBD) whose conception has been validated by a psychometric analysis. RESULTS Among 363 participants, 20 patients (5.5%) reported CBD use. Factors associated with CBD use were: age <60 years (odd ratio = 7.80[1.36-13.32], p < 10-4 versus ≥60 years), smoking history (OR = 5.53[1.81-16.88], p < 0.01), and no smoking cessation (OR = 5.07[1.66-15.46], p < 0.01). CBD use was also associated with a better CBD total HL score than non-users (p-value = 0.02). CONCLUSION Identification of factors associated with CBD use and a relatively high patient CBD HL in CBD users showed that CBD use in cancer patients care represented a new concern and should enhance health professionals to consider CBD with its associated drug-related problems.
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Affiliation(s)
| | - Marie Guédon
- CHU Reims, Department of Pharmacy, Reims, France
| | - Mathias Brugel
- CHU Reims, Service de Gastroentérologie et Oncologie Digestive, Reims, France
| | | | - Claire Carlier
- CHU Reims, Oncology Day-Hospital, Reims, France
- Institut Jean Godinot, Département d'Oncologie Médicale, Reims, France
| | | | - Marine Perrier
- CHU Reims, Service de Gastroentérologie et Oncologie Digestive, Reims, France
| | - Léa Aubert
- CHU Reims, Oncology Day-Hospital, Reims, France
| | - Florian Slimano
- Université de Reims Champagne-Ardenne, Biospect, CHU Reims, Department of Pharmacy, Reims, France
| | - Céline Mongaret
- Université de Reims Champagne-Ardenne, BIOS, CHU Reims, Department of Pharmacy, Reims, France
| | - Olivier Bouché
- Université de Reims Champagne-Ardenne, Biospect, CHU Reims, Oncology Day-Hospital, Reims, France
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Guedon M, Le Bozec A, Brugel M, Clarenne J, Carlier C, Perrier M, Laurent M, Hettler D, Mongaret C, Bouché O, Slimano F. Cannabidiol-drug interaction in cancer patients: A retrospective study in a real-life setting. Br J Clin Pharmacol 2023; 89:2322-2328. [PMID: 36849134 DOI: 10.1111/bcp.15701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/06/2023] [Accepted: 02/16/2023] [Indexed: 03/01/2023] Open
Abstract
Cannabidiol (CBD) consumption in cancer patients is growing and there is a need to investigate how to detect cannabidiol-drug interactions (CDIs). However, CDIs and the clinical relevance between CBD, anticancer treatment, supportive care and conventional drugs is poorly studied especially in real-life settings. In 1 oncology day-hospital, a cross-sectional study in 363 cancer patients treated with chemotherapy revealed 20 patients (5.5%) who consumed CBD. In this study we aimed to explore the prevalence and clinical relevance of CDIs among these 20 patients. CDI detection used the Food and Drug Administration Drugs.com database and clinical relevance was assessed accordingly. Ninety CDIs with 34 medicines were detected (4.6 CDI/patient). The main clinical risks were central nervous system depression and hepatoxicity. The main CDIs were assessed as moderate and anticancer treatment do not seem to add to the risk. CBD discontinuation appears to be the most consistent management. Future studies should explore the clinical relevance of drug interactions with CBD in cancer patients.
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Affiliation(s)
- Marie Guedon
- Department of Pharmacy, CHU Reims, F-51100, Reims, France
| | | | - Mathias Brugel
- Department of Gastroenterology and Digestive Oncology, CHU Reims, F-51100, Reims, France
| | - Justine Clarenne
- Department of Pharmacy, CHU de Reims, BIOs, Université de Reims Champagne-Ardenne, F-51100, Reims, France
| | - Claire Carlier
- Oncology Day-Hospital, CHU Reims, F-51100, Reims, France
| | - Marine Perrier
- Department of Gastroenterology and Digestive Oncology, CHU Reims, F-51100, Reims, France
| | | | | | - Céline Mongaret
- Department of Pharmacy, CHU de Reims, BIOs, Université de Reims Champagne-Ardenne, F-51100, Reims, France
| | - Olivier Bouché
- Oncology Day-Hospital, CHU de Reims, BioSpecT, Université de Reims Champagne-Ardenne, F-51100, Reims, France
| | - Florian Slimano
- Department of Pharmacy, CHU de Reims, BioSpecT, Université de Reims Champagne-Ardenne, F-51100, Reims, France
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Le Bozec A, Brugel M, Djerada Z, Ayad M, Perrier M, Carlier C, Botsen D, Nazeyrollas P, Bouché O, Slimano F. Beta-blocker exposure and survival outcomes in patients with advanced pancreatic ductal adenocarcinoma: a retrospective cohort study (BETAPANC). Front Pharmacol 2023; 14:1137791. [PMID: 37274119 PMCID: PMC10235451 DOI: 10.3389/fphar.2023.1137791] [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: 01/04/2023] [Accepted: 05/09/2023] [Indexed: 06/06/2023] Open
Abstract
Introduction: Preclinical studies have demonstrated the possible role of beta-adrenergic receptors in pancreatic ductal adenocarcinoma (PDAC) tumor invasion and migration. The current study aimed to explore the possible association between survival outcomes and beta-blocker (BB) exposure in patients with advanced PDAC. Methods: This retrospective single-center study included 182 patients with advanced PDAC. Clinical [age, sex, BMI, cardiovascular condition, presence (SBB) or absence (NSBB) of beta-1 selectivity of BB, exposure duration, and multimorbidity], oncological (stage and anticancer treatment regimen), and biological (renal and liver function) data were collected. The endpoints were overall survival (OS) and progression-free survival (PFS). Hazard ratios (HRs) and 95% confidence intervals (95% CIs) for survival outcomes associated with BB exposure were estimated using Cox regression model and propensity score (PS) methods. Results: Forty-one patients (22.5%) were exposed to BB. A total of 104 patients progressed (57.1%) to PDAC and 139 (76.4%) patients died at the end of follow-up (median, 320 days; IQR, 438.75 days). When compared to the non-exposed group, there was no increase in survival outcomes associated with BB use (OS: HR = 1.38, 95% CI = 0.80-2.39, p = 0.25; PFS: adjusted HR = 0.95, 95% CI = 0.48-1.88, p = 0.88). Similar results were obtained using the PS method. Compared to no BB usage, SBB use was associated with a significant decrease in OS (HR = 1.80, 95% CI = 1.16-2.80, p < 10-2). Conclusion: BB exposure was not associated with improved PDAC survival outcomes. Beta-1-selectivity was not independently associated with any differences.
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Affiliation(s)
| | - Mathias Brugel
- CHU Reims, Service de Gastroentérologie et Oncologie Digestive, Reims, France
| | - Zoubir Djerada
- Université de Reims Champagne-Ardenne, HERVI, Service Pharmacologie-Toxicologie, Reims, France
| | - Marya Ayad
- CHU Reims, Oncology Day-Hospital, Reims, France
| | - Marine Perrier
- CHU Reims, Service de Gastroentérologie et Oncologie Digestive, Reims, France
| | - Claire Carlier
- CHU Reims, Oncology Day-Hospital, Reims, France
- Institut Jean Godinot, Département d’Oncologie Médicale, Reims, France
| | - Damien Botsen
- CHU Reims, Service de Gastroentérologie et Oncologie Digestive, Reims, France
- Institut Jean Godinot, Département d’Oncologie Médicale, Reims, France
| | - Pierre Nazeyrollas
- Université de Reims Champagne-Ardenne, VieFra, CHU Reims, Service Cardiologie, Reims, France
| | - Olivier Bouché
- Université de Reims Champagne-Ardenne, Biospect, CHU Reims, Service de Gastroentérologie et Oncologie Digestive, Reims, France
| | - Florian Slimano
- Université de Reims Champagne-Ardenne, Biospect, CHU Reims, Service Pharmacie, Reims, France
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Brugel M, Dupont M, Carlier C, Botsen D, Essi DE, Sanchez V, Slimano F, Perrier M, Bouché O. Association of palliative care management and survival after chemotherapy discontinuation in patients with advanced pancreatic adenocarcinoma: A retrospective single-centre observational study. Pancreatology 2023:S1424-3903(23)00069-8. [PMID: 37037682 DOI: 10.1016/j.pan.2023.03.005] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/20/2023] [Accepted: 03/16/2023] [Indexed: 04/12/2023]
Abstract
BACKGROUND Palliative care (PC) is integrated into standard oncology care. However, its clinical impact at the end of life remains unclear in pancreatic adenocarcinoma (PA). We aimed to describe the end-of-life care pathway and to assess whether PC referral influences survival after chemotherapy discontinuation (CD) among advanced PA patients. METHODS This retrospective single-centre observational study was conducted among deceased patients with advanced PA who had received chemotherapy between January 1, 2016, and December 31, 2021. Baseline characteristics, the timing of PC referral and events after CD were collected. The primary outcome was time from CD to death. RESULTS Among the 148 included patients, 53.4% (n = 79) received PC, mostly late after the CD (n = 133, 89.9%), 16.9% (n = 25) received chemotherapy in the last 14 days of life and 75.6% died at the hospital. None received PC in the 8 weeks following the diagnosis. PC referral significantly increased PC department admissions (p < 0.001) and decreased medical unit admissions (p < 0.001). The median survival after the CD was 35 days (IQR: 19-64.5). PC referral was associated with increased survival after CD (HR: 0.65 [0.47-0.90], p = 0.010, Cox) and after adjusting (HR: 0.65 [0.42-0.99], p = 0.045, Cox). CONCLUSION The study suggests that PC may be associated with longer survival after CD in advanced PA patients. However, PC is underused, and patients are referred late in their care pathway.
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Affiliation(s)
- M Brugel
- Université de Reims Champagne-Ardenne, Department of Ambulatory Oncology Care Unit, CHU Reims, Reims, France.
| | - M Dupont
- Department of Medical Oncology, Institut Jean Godinot, Reims, France
| | - C Carlier
- Université de Reims Champagne-Ardenne, Department of Ambulatory Oncology Care Unit, CHU Reims, Reims, France; Department of Medical Oncology, Institut Jean Godinot, Reims, France
| | - D Botsen
- Université de Reims Champagne-Ardenne, Department of Ambulatory Oncology Care Unit, CHU Reims, Reims, France; Department of Medical Oncology, Institut Jean Godinot, Reims, France
| | - D Edoh Essi
- Department of Medical Oncology, Institut Jean Godinot, Reims, France
| | - V Sanchez
- Department of Palliative Care, CHU Reims, Reims, France
| | - F Slimano
- Université de Reims Champagne-Ardenne, Department of Pharmacy, CHU Reims, Reims, France
| | - M Perrier
- Université de Reims Champagne-Ardenne, Department of Ambulatory Oncology Care Unit, CHU Reims, Reims, France
| | - O Bouché
- Université de Reims Champagne-Ardenne, Department of Ambulatory Oncology Care Unit, CHU Reims, Reims, France
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Callon S, Brugel M, Botsen D, Royer B, Slimano F, Feliu C, Gozalo C, Konecki C, Devie B, Carlier C, Daire V, Laurés N, Perrier M, Djerada Z, Bouché O. Renal impairment and abnormal liver function tests in pre-therapeutic phenotype-based DPD deficiency screening using uracilemia: a comprehensive population-based study in 1138 patients. Ther Adv Med Oncol 2023; 15:17588359221148536. [PMID: 36643657 PMCID: PMC9837271 DOI: 10.1177/17588359221148536] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 08/18/2022] [Accepted: 12/13/2022] [Indexed: 01/13/2023] Open
Abstract
Background Dihydropyrimidine dehydrogenase (DPD) deficiency screening is a pre-therapeutic standard to prevent severe fluoropyrimidine-related toxicity. Although several screening methods exist, the accuracy of their results remains debatable. In France, the uracilemia measurement is considered the standard in DPD deficiency screening. The objective of this study was to describe the hyperuracilemia (⩾16 ng/mL) rate and investigate the influence of hepatic and renal impairment in uracilemia measurements since the guidelines were implemented. Patients and methods Using a cohort of 1138 patients screened between 18 October 2018 and 18 October 2021, basic demographic characteristics, date of blood sampling, and potential biological confounders including liver function tests [aspartate aminotransaminase (AST), alanine aminotransaminase (ALT), gamma-glutamyl transferase (γGT), alkaline phosphatase (ALP), and bilirubin] and estimated glomerular filtration rate (eGFR) were collected. The second same-patient uracilemia analysis was also performed. Temporal change was graphically represented while potential confounders were stratified to show linearity when suspected. Results Hyperuracilemia was diagnosed in 12.7% (n = 150) samples with 6.7%, 5.4%, 0.5%, and 0.08% between 16 and 20 ng/mL, 20 and 50 ng/mL, 50 and 150 ng/mL, and >150 ng/mL, respectively. The median uracilemia concentration was 9.4 ng/mL (range: 1.2 and 172.3 ng/mL) and the monthly hyperuracilemia rate decreased steadily from >30% to around 9%. Older age, normalized AST, γGT, ALP results, bilirubin levels, and decreased eGFR were linearly associated with higher plasma uracil concentrations (all p < 0.001). In the adjusted multivariate linear model, AST, eGFR, and ALP remained associated with uracilemia (p < 0.05). When measured twice in 39 patients, the median uracilemia rate of change was -2.5%, which subsequently changed the diagnosis in nine patients (23.1%). Conclusions Better respect of pre-analytical conditions may explain the steady decrease in monthly hyperuracilemia rates over the 3 years. Elevated AST, ALP levels, and reduced eGFR could induce a false increase in uracilemia and second uracilemia measurements modified the first DPD deficiency diagnosis in almost 25% of the patients.
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Affiliation(s)
| | | | - Damien Botsen
- Department of Medical Oncology, Godinot Cancer Institute, Reims, France,Department of Digestive Oncology and Gastroenterology, University of Reims Champagne-Ardenne (URCA), CHU Reims, Reims, France
| | - Bernard Royer
- Clinical Pharmacology and Toxicology Laboratory, CHU Besançon, Besançon, France
| | | | - Catherine Feliu
- Pharmacology and Toxicology Department, CHU Reims, Reims, France
| | - Claire Gozalo
- Pharmacology and Toxicology Department, CHU Reims, Reims, France
| | - Céline Konecki
- Pharmacology and Toxicology Department, CHU Reims, Reims, France
| | - Bruno Devie
- Clairmarais Bioxa Medical Biology Laboratory, Reims, France
| | - Claire Carlier
- Department of Medical Oncology, Godinot Cancer Institute, Reims, France,Department of Digestive Oncology and Gastroenterology, University of Reims Champagne-Ardenne (URCA), CHU Reims, Reims, France
| | - Viktor Daire
- Department of Digestive Oncology and Gastroenterology, University of Reims Champagne-Ardenne (URCA), CHU Reims, Reims, France
| | - Nicolas Laurés
- Department of Digestive Oncology and Gastroenterology, University of Reims Champagne-Ardenne (URCA), CHU Reims, Reims, France
| | - Marine Perrier
- Department of Digestive Oncology and Gastroenterology, University of Reims Champagne-Ardenne (URCA), CHU Reims, Reims, France
| | - Zoubir Djerada
- Pharmacology and Toxicology Department, CHU Reims, Reims, France
| | - Olivier Bouché
- Department of Digestive Oncology and Gastroenterology, University of Reims Champagne-Ardenne (URCA), CHU Reims, Reims, France
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Dupont M, Carlier C, Gower-Rousseau C, Barbier-Lider P, Botsen D, Brasseur M, Burgevin A, Chourbagi C, D’Almeida R, Hautefeuille V, Hentzien M, Lambert A, Lamuraglia M, Lavau-Denes S, Lopez A, Parent D, Slimano F, Brugel M, Bouché O. Incidence and associated factors of cetuximab-induced hypersensitivity infusion reactions in 1392 cancer patients treated in four French areas: a possible association with Lyme disease? BMC Cancer 2022; 22:1219. [PMID: 36434607 PMCID: PMC9701068 DOI: 10.1186/s12885-022-10192-4] [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: 12/28/2021] [Accepted: 10/17/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Previous studies have observed an increased incidence of Cetuximab-induced hypersensitivity infusion reactions (CI-IRs) in the southeastern states of the USA. Tick's bites were suspected of generating cross-reactions between cetuximab and alpha-gal. This study aims was to describe the incidence and associated risk factors of CI-IRs, in the French areas chosen according to their Lyme disease incidence. PATIENTS AND METHODS A retrospective chart review was conducted on patients that received cetuximab infusion from January 2010 to June 2019 in 4 French areas with different Lyme disease incidence rates. RESULTS Of 1392 patients, 117 (8.4%) experienced a CI-IR, including 68 severe (grade 3 or 4) reactions (4.9%). This CI-IR incidence was significantly higher in the Lyme disease high-risk area than in the other areas (13.2% versus 7.1%, 8.1% and 6.4%; P = 0.016). Sex (P = 0.53), premedication (P = 0.91), primary cancer location (P = 0.46) and chemotherapy regimen type (P = 0.78) had no impact on CI-IR incidence in the overall population. In the head and neck squamous cell carcinoma (HNSCC) patient subgroup, CI-IRs were significantly more frequent in the high-risk area (16.4% versus 6.7%, 7.1% and 7.0%; P = 0.0015). CONCLUSION This study suggests that patients treated in the French area with the highest incidence of Lyme disease are at a higher risk of CI-IRs.
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Affiliation(s)
- M Dupont
- Department of Medical Oncology, Godinot Cancer Institute, 1 Rue du Général Koenig, 51100 Reims, France
| | - Claire Carlier
- Department of Medical Oncology, Godinot Cancer Institute, 1 Rue du Général Koenig, 51100 Reims, France ,grid.11667.370000 0004 1937 0618Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - C Gower-Rousseau
- grid.414215.70000 0004 0639 4792Department of Research and Public Health, CHU Reims, Reims, France
| | - P Barbier-Lider
- grid.410527.50000 0004 1765 1301Department of Pharmacy, Nancy University Hospital, Vandoeuvre-lès-Nancy, France
| | - D Botsen
- Department of Medical Oncology, Godinot Cancer Institute, 1 Rue du Général Koenig, 51100 Reims, France ,grid.11667.370000 0004 1937 0618Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - M Brasseur
- grid.11667.370000 0004 1937 0618Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - A Burgevin
- grid.29172.3f0000 0001 2194 6418Department of Gastroenterology and Digestive Oncology, Nancy University Hospital, Lorraine University, Vandoeuvre-lès-Nancy, France
| | - C Chourbagi
- grid.134996.00000 0004 0593 702XDepartment of Pharmacy, Amiens University Hospital, Amiens, France
| | - R D’Almeida
- grid.11667.370000 0004 1937 0618Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - V Hautefeuille
- grid.11162.350000 0001 0789 1385Department of Gastroenterology and Digestive Oncology, Amiens University Hospital, University of Picardie Jules Verne, Amiens, France
| | - M Hentzien
- grid.11667.370000 0004 1937 0618Department of Infectious Diseases and Internal Medicine, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - A Lambert
- Department of Medical Oncology, Lorraine Cancer Institute, Vandoeuvre-lès-Nancy, France
| | - M Lamuraglia
- grid.11162.350000 0001 0789 1385Department of Medical Oncology, Amiens University Hospital, University of Picardie Jules-Vernes, Amiens, France
| | - S Lavau-Denes
- grid.411178.a0000 0001 1486 4131Department of Medical Oncology, Limoges University Hospital, Limoges, France
| | - A Lopez
- grid.29172.3f0000 0001 2194 6418Department of Gastroenterology and Digestive Oncology, Nancy University Hospital, Lorraine University, Vandoeuvre-lès-Nancy, France
| | - D Parent
- Department of Pharmacy, Godinot Cancer Institute, Reims, France
| | - F Slimano
- grid.11667.370000 0004 1937 0618Department of Pharmacy, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - M Brugel
- grid.11667.370000 0004 1937 0618Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
| | - O Bouché
- grid.11667.370000 0004 1937 0618Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne, Reims, France
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Laures N, Konecki C, Brugel M, Giffard AL, Abdelli N, Botsen D, Carlier C, Gozalo C, Feliu C, Slimano F, Djerada Z, Bouché O. Impact of Guidelines Regarding Dihydropyrimidine Dehydrogenase (DPD) Deficiency Screening Using Uracil-Based Phenotyping on the Reduction of Severe Side Effect of 5-Fluorouracil-Based Chemotherapy: A Propension Score Analysis. Pharmaceutics 2022; 14:pharmaceutics14102119. [PMID: 36297556 PMCID: PMC9610761 DOI: 10.3390/pharmaceutics14102119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/07/2022] Open
Abstract
Dihydropyrimidine dehydrogenase (DPD) deficiency is associated with severe fluoropyrimidines-induced toxicity. As of September 2018, French recommendations call for screening for DPD deficiency by plasma uracil quantification prior to all fluoropyrimidine-based chemotherapy. A dose reduction of fluoropyrimidine is recommended when uracil concentration is equal to or greater than 16 ng/mL. This matched retrospective study assessed the impact of DPD screening on the reduction of severe side effects and on the management of DPD-deficient patients. Using a propensity score, we balanced the factors influencing 5-Fluorouracil (5-FU) toxicity. Then, the severity scores (G3 and G4 severity as well as their frequency) of patients who did not benefit from DPD screening were compared with those of patients who benefited from DPD screening for each treatment cycle (from 1 to 4). Among 349 screened patients, 198 treated patients were included. Among them, 31 (15.7%) had DPD deficiency (median uracilemia 19.8 ng/mL (range: 16.1−172.3)). The median toxicity severity score was higher in the unscreened group for each treatment cycle (0 vs. 1, p < 0.001 at each cycle from 1 to 4) as well as the cumulative score during all courses of treatment (p = 0.028). DPD-deficient patients received a significantly lower dose of 5-FU (p < 0.001). This study suggests that pretherapeutic plasmatic uracil assessment, along with 5-FU dosage adjustment, may be beneficial in reducing 5-FU toxicity in real-life patients.
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Affiliation(s)
- Nicolas Laures
- Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne (URCA), 51100 Reims, France
| | - Céline Konecki
- Department of Medical Pharmacology, University of Reims Champagne-Ardenne (URCA), HERVI EA3801, 51097 Reims, France
- Department of Pharmacology and Toxicology, CHU Reims, 51100 Reims, France
| | - Mathias Brugel
- Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne (URCA), 51100 Reims, France
- Department of Hepato-Gastroenterology and Digestive Oncology, Centre Hospitalier Auban-Moët, 51200 Epernay, France
| | - Anne-Lise Giffard
- Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne (URCA), 51100 Reims, France
| | - Naceur Abdelli
- Department of Hepato-Gastroenterology and Digestive Oncology, Centre Hospitalier de Chalons en Champagne, 51000 Chalons en Champagne, France
| | - Damien Botsen
- Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne (URCA), 51100 Reims, France
| | - Claire Carlier
- Department of Gastroenterology and Digestive Oncology, CHU Reims, University of Reims Champagne-Ardenne (URCA), 51100 Reims, France
| | - Claire Gozalo
- Department of Medical Pharmacology, University of Reims Champagne-Ardenne (URCA), HERVI EA3801, 51097 Reims, France
- Department of Pharmacology and Toxicology, CHU Reims, 51100 Reims, France
| | - Catherine Feliu
- Department of Medical Pharmacology, University of Reims Champagne-Ardenne (URCA), HERVI EA3801, 51097 Reims, France
- Department of Pharmacology and Toxicology, CHU Reims, 51100 Reims, France
| | - Florian Slimano
- Department of Pharmacy, CHU Reims, University of Reims Champagne-Ardenne (URCA), 51100 Reims, France
| | - Zoubir Djerada
- Department of Medical Pharmacology, University of Reims Champagne-Ardenne (URCA), HERVI EA3801, 51097 Reims, France
- Department of Pharmacology and Toxicology, CHU Reims, 51100 Reims, France
- Correspondence:
| | - Olivier Bouché
- Department of Medical Pharmacology, University of Reims Champagne-Ardenne (URCA), HERVI EA3801, 51097 Reims, France
- Department of Pharmacology and Toxicology, CHU Reims, 51100 Reims, France
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Takounjou AF, Dandjio WF, Fodoué Y, Fantong W, Ngah M, Nenkam TJ, Carlier C, Vassolo S, Montcoudiol N, Tarkang CE, Chounna G, Kringel R. Assessment of water availability for agricultural activities in the savannah Plateau of Adamawa-Cameroon. Environ Monit Assess 2022; 194:813. [PMID: 36131189 DOI: 10.1007/s10661-022-10476-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
The availability of water for agricultural use in the savannah plateau of Adamawa, Cameroon, is addressed in this paper. Specific field tests coupled with climatic data analysis have helped to characterize the hydrological and hydrogeological conditions of water resources in a small catchment. An agricultural suitability map, based on the water availability during the dry season, is produced. Measured saturated hydraulic conductivities indicated an acceptable disposition of the soils for agriculture. The transmissivity values indicated moderate groundwater potential with mean annual recharge of 96 mm. The agricultural suitability map shows that only 8.8% of the basin area is very favorable for agriculture and that 51% of the basin is not suitable for agriculture, due to water scarcity during the dry season. Due to the considerable depth to the water table, pumping for irrigation purposes is not affordable for the local low-income farmers. Therefore, there is a need to implement adapted solutions for irrigation to support farmers' endeavors, such as the development of water retention basins or the construction of boreholes equipped with electric pumps supplied by solar energy for irrigation.
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Affiliation(s)
- Alain Fouépé Takounjou
- Institute for Geological and Mining Research-Hydrological Research Centre, PO Box 4110, Yaoundé, Cameroon.
| | - Wylliam Foano Dandjio
- Department of Earth Sciences, University of Yaounde I, PO Box 812, Yaoundé, Cameroon
| | - Yaya Fodoué
- Institute for Geological and Mining Research-Hydrological Research Centre, PO Box 4110, Yaoundé, Cameroon
| | - Wilson Fantong
- Institute for Geological and Mining Research-Hydrological Research Centre, PO Box 4110, Yaoundé, Cameroon
| | - Mohamed Ngah
- Department of Earth Sciences, University of Yaounde I, PO Box 812, Yaoundé, Cameroon
| | | | - Claire Carlier
- Federal Institute of Geoscience and Natural Resources (BGR), Hannover, Germany
| | - Sara Vassolo
- Federal Institute of Geoscience and Natural Resources (BGR), Hannover, Germany
| | - Nelly Montcoudiol
- Federal Institute of Geoscience and Natural Resources (BGR), Hannover, Germany
| | - Carine Enow Tarkang
- Institute for Geological and Mining Research-Hydrological Research Centre, PO Box 4110, Yaoundé, Cameroon
| | - Gergino Chounna
- National Advanced School of Public Works, Box 510, Yaoundé, Cameroon
| | - Robert Kringel
- Federal Institute of Geoscience and Natural Resources (BGR), Hannover, Germany
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10
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Laurent L, Brugel M, Carlier C, Clere F, Bertrand A, Botsen D, Boulagnon‐Rombi C, Dalstein V, Debreuve‐Theresette A, Deguelte S, Garbar C, Mahmoudi R, Marechal A, Morland D, Rey J, Schvartz C, Vallet C, Merrouche Y, Slimano F, Bouché O. One-year COVID-19 outcomes on the oncology care patient pathway: Results of a French descriptive, cross-sectional comprehensive study (ONCOCARE-COV). Cancer Med 2022; 11:4865-4879. [PMID: 35593199 PMCID: PMC9348299 DOI: 10.1002/cam4.4817] [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: 01/23/2022] [Revised: 05/03/2022] [Accepted: 05/04/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND The COVID-19 pandemic led to a widely documented disruption in cancer care pathway. Since a resurgence of the pandemic was expected after the first lockdown in France, the global impact on the cancer care pathway over the year 2020 was investigated. AIMS This study aimed to describe the changes in the oncology care pathway for cancer screening, diagnosis, assessment, diagnosis annoucement procedure and treatment over a one-year period. MATERIALS & METHODS The ONCOCARE-COV study was a comprehensive, retrospective, descriptive, and cross-sectional study comparing the years 2019 and 2020. All key indicators along the cancer care pathway assessing the oncological activity over four periods were described. This study was set in a high-volume, public, single tertiary care center divided in two complementary sites (Reims University Hospital and Godinot Cancer Institute, Reims, France) which was located in a high COVID-19 incidence area during both peaks of the outbreak. RESULTS A total of 26,566 patient's files were active during the year 2020. Breast screening (-19.5%), announcement dedicated consultations (-9.2%), Intravenous and Hyperthermic Intraoperative Intraperitoneal Chemotherapy (HIPECs) (-25%), and oncogeriatric evaluations (-14.8%) were heavily disrupted in regard to 2020 activity. We identified a clear second outbreak wave impact on medical announcement procedures (October, -14.4%), radiotherapy sessions (October, -16%), number of new health record discussed in multidisciplinary tumor board meeting (November, -14.6%) and HIPECs (November, -100%). Moreover, 2020 cancer care activity stagnated compared to 2019. DISCUSSION The oncological care pathway was heavily disrupted during the first and second peaks of the COVID-19 outbreak. Between lockdowns, we observed a remarkable but non-compensatory recovery as well as a lesser impact from the pandemic resurgence. However, in absence of an increase in activity, a backlog persisted. CONCLUSION Public health efforts are needed to deal with the consequences of the COVID-19 pandemic on the oncology care pathway.
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Affiliation(s)
- Léonard Laurent
- Medical Oncology DepartmentGodinot Cancer InstituteReimsFrance
| | - Mathias Brugel
- Ambulatory Oncology Care UnitReims University HospitalReimsFrance
| | - Claire Carlier
- Medical Oncology DepartmentGodinot Cancer InstituteReimsFrance,Ambulatory Oncology Care UnitReims University HospitalReimsFrance
| | - Florentin Clere
- Care‐Associated Risks and Care Quality DepartmentUniversity HospitalReimsFrance
| | - Aurélie Bertrand
- Marne Site, Regional Coordination Center for Cancer Screening Grand‐EstReimsFrance
| | - Damien Botsen
- Medical Oncology DepartmentGodinot Cancer InstituteReimsFrance,Ambulatory Oncology Care UnitReims University HospitalReimsFrance
| | | | - Véronique Dalstein
- Pathology DepartmentReims University HospitalReimsFrance,INSERM, P3 Cell UMR‐S1250, SFR CAP‐SANTEUniversité de Reims Champagne‐ArdenneReimsFrance
| | | | | | | | - Rachid Mahmoudi
- Department of Internal Medicine and GeriatricsReims University HospitalReimsFrance,Université de Reims Champagne‐ArdenneReimsFrance
| | | | - David Morland
- Nuclear Medicine DepartmentGodinot Cancer InstituteReimsFrance,CReSTIC EA 3804Université de Reims Champagne‐ArdenneReimsFrance
| | | | - Claire Schvartz
- Medical Oncology DepartmentGodinot Cancer InstituteReimsFrance,INSERM, P3 Cell UMR‐S1250, SFR CAP‐SANTEUniversité de Reims Champagne‐ArdenneReimsFrance
| | - Catherine Vallet
- Medical Information DepartmentReims University HospitalReimsFrance
| | - Yacine Merrouche
- Medical Oncology DepartmentGodinot Cancer InstituteReimsFrance,Université de Reims Champagne‐ArdenneReimsFrance
| | - Florian Slimano
- Université de Reims Champagne‐ArdenneReimsFrance,Pharmacy DepartmentReims University HospitalReimsFrance
| | - Olivier Bouché
- Ambulatory Oncology Care UnitReims University HospitalReimsFrance,Université de Reims Champagne‐ArdenneReimsFrance
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11
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Brugel M, Letrillart L, Evrard C, Thierry A, Tougeron D, El Amrani M, Piessen G, Truant S, Turpin A, d'Engremont C, Roth G, Hautefeuille V, Regimbeau JM, Williet N, Schwarz L, Di Fiore F, Borg C, Doussot A, Lambert A, Moulin V, Trelohan H, Bolliet M, Topolscki A, Ayav A, Lopez A, Botsen D, Piardi T, Carlier C, Bouché O. Impact of the COVID-19 pandemic on disease stage and treatment for patients with pancreatic adenocarcinoma: A French comprehensive multicentre ambispective observational cohort study (CAPANCOVID). Eur J Cancer 2022; 166:8-20. [PMID: 35259629 PMCID: PMC8828421 DOI: 10.1016/j.ejca.2022.01.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND The COVID-19 pandemic caused major oncology care pathway disruption. The CAPANCOVID study aimed to evaluate the impact on pancreatic adenocarcinoma (PA) - from diagnosis to treatment - of the reorganisation of the health care system during the first lockdown. METHODS This multicentre ambispective observational study included 833 patients diagnosed with PA between September 1, 2019 and October 31, 2020 from 13 French centres. Data were compared over three periods defined as before the outbreak of COVID-19, during the first lockdown (March 1 to May 11, 2020) and after lockdown. RESULTS During the lockdown, mean weekly number of new cases decreased compared with that of pre-pandemic levels (13.2 vs. 10.8, -18.2%; p = 0.63) without rebound in the post-lockdown period (13.2 vs. 12.9, -1.7%; p = 0.97). The number of borderline tumours increased (13.6%-21.7%), whereas the rate of metastatic diseases rate dropped (47.1%-40.3%) (p = 0.046). Time-to-diagnosis and -treatment were not different over periods. Waiting neoadjuvant chemotherapy in resectable tumours was significantly favoured (24.7%-32.6%) compared with upfront surgery (13%-7.8%) (p = 0.013). The use of mFOLFIRINOX preoperative chemotherapy regimen decreased (84.9%-69%; p = 0.044). After lockdown, the number of borderline tumours decreased (21.7%-9.6%) and advanced diseases increased (59.7%-69.8%) (p = 0.046). SARS-CoV-2 infected 39 patients (4.7%) causing 5 deaths (12.8%). CONCLUSION This cohort study suggests the existence of missing diagnoses and of a shift in disease stage at diagnosis from resectable to advanced diseases with related therapeutic modifications whose prognostic consequences will be known after the planned follow-up. TRIAL REGISTRATION Clinicaltrials.gov NCT04406571.
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Affiliation(s)
- Mathias Brugel
- University of Reims Champagne-Ardenne (URCA), Digestive Oncology and Hepatogastroenterology Department, CHU Reims, Reims, France.
| | - Léa Letrillart
- University of Reims Champagne-Ardenne (URCA), Digestive Oncology and Hepatogastroenterology Department, CHU Reims, Reims, France
| | - Camille Evrard
- Medical Oncology Department, CHU Poitiers, Poitiers, France
| | - Aurore Thierry
- Department of Research and Public Health, CHU Reims, Reims, France
| | - David Tougeron
- University of Poitiers, Hepatogastroenterology Department, CHU Poitiers, Poitiers, France
| | - Mehdi El Amrani
- Digestive Surgery and Liver Transplantation Department, CHRU Lille, CANTHER Laboratory Inserm UMR-S1277, University of Lille, Lille, France
| | - Guillaume Piessen
- Digestive and Oncological Surgery Department, CHRU Lille, CANTHER Laboratory Inserm UMR-S1277, University of Lille, Lille, France
| | - Stéphanie Truant
- Digestive Surgery and Liver Transplantation Department, CHRU Lille, CANTHER Laboratory Inserm UMR-S1277, University of Lille, Lille, France
| | - Anthony Turpin
- Medical Oncology Department, CHRU Lille, CANTHER Laboratory Inserm UMR-S1277, University of Lille, Lille, France
| | - Christelle d'Engremont
- Digestive Oncology and Hepatogastroenterology Department, CHU Grenoble-Alpes, Grenoble-Alpes University, Grenoble, France
| | - Gaël Roth
- Digestive Oncology and Hepatogastroenterology Department, CHU Grenoble-Alpes, Grenoble-Alpes University, Grenoble, France
| | - Vincent Hautefeuille
- Digestive Oncology and Gastroenterology Department, CHU Amiens-Picardie, Amiens, France
| | - Jean M Regimbeau
- Digestive Surgery Department, CHU Amiens-Picardie, SSPC (Simplification of Complex Patient Care) UR UPJV 7518, University of Picardie-Jules Verne, Amiens, France
| | - Nicolas Williet
- Hepatogastroenterology Department, CHU Saint Etienne, Saint-Priest-en-Jarez, France
| | - Lilian Schwarz
- Digestive Surgery Department, CHU Rouen, UNIROUEN, Inserm 1245, IRON Group, Normandie University, Rouen, France
| | - Frédéric Di Fiore
- Hepatogastroenterology Department, CHU Rouen, UNIROUEN, Inserm 1245, IRON Group, Normandie University, Rouen, France
| | - Christophe Borg
- Medical Oncology Department, CHU Besançon, INSERM, EFS BFC, UMR1098, RIGHT, University Bourgogne Franche-Comté, Besançon, France
| | - Alexandre Doussot
- Digestive Surgical Oncology and Liver Transplantation Department, CHU Besançon, Besançon, France
| | - Aurélien Lambert
- Medical Oncology Department, Lorraine Cancer Institute, Vandoeuvre-lès-Nancy, France
| | - Valérie Moulin
- Oncology Department, GH La Rochelle, La Rochelle, France
| | | | - Marion Bolliet
- Hepatogastroenterology Department, CH Colmar, Colmar, France
| | | | - Ahmet Ayav
- Hepatobiliary and Pancreatic Surgery Departement, CHRU Nancy, Lorraine University, Vandoeuvre-lès-Nancy, France
| | - Anthony Lopez
- Gastroenterology and Digestive Oncology, CHRU Nancy, Lorraine University, Vandoeuvre-lès-Nancy, France
| | - Damien Botsen
- University of Reims Champagne-Ardenne (URCA), Digestive Oncology and Hepatogastroenterology Department, CHU Reims, Reims, France; Department of Medical Oncology, Godinot Cancer Institute, Reims, France
| | - Tulio Piardi
- General, Digestive and Endocrine Surgery Department, CHU Reims, Research Unit EA 3797 (VieFra) University of Reims Champagne-Ardenne (URCA), Reims, France
| | - Claire Carlier
- University of Reims Champagne-Ardenne (URCA), Digestive Oncology and Hepatogastroenterology Department, CHU Reims, Reims, France; Department of Medical Oncology, Godinot Cancer Institute, Reims, France
| | - Olivier Bouché
- University of Reims Champagne-Ardenne (URCA), Digestive Oncology and Hepatogastroenterology Department, CHU Reims, Reims, France
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12
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Brugel M, Carlier C, Essner C, Debreuve-Theresette A, Beck MF, Merrouche Y, Bouché O. Dramatic Changes in Oncology Care Pathways During the COVID-19 Pandemic: The French ONCOCARE-COV Study. Oncologist 2020; 26:e338-e341. [PMID: 33111460 PMCID: PMC7873337 DOI: 10.1002/onco.13578] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/14/2020] [Indexed: 01/12/2023] Open
Abstract
The coronavirus disease 2019 (COVID‐19) pandemic may have affected cancer management. We aimed to evaluate changes in every oncology care pathway essential step, from screening to treatment, during the pandemic. Monthly oncological activity differences between 2019 and 2020 (screening tests, histopathological analyzes, multidisciplinary tumor board meetings (MTBMs), diagnostic announcement procedures (DAPs), and treatments were calculated in two French areas experiencing different pandemic intensity (Reims and Colmar). COVID‐19 has had a dramatic impact in terms of screening (−86% to −100%), diagnosis (−39%), and surgical treatment (−30%). This global decrease in all essential oncology care pathway steps contrasted with the relative stability of chemotherapy (−9%) and radiotherapy use (−16%). Outbreak occurred earlier and with more intensity in Colmar but had a comparable impact in both areas regarding MTMBs and DAPs. The current ONCOCARE‐COV study is still in progress and with a longer follow‐up to analyze postlockdown situation. The COVID‐19 pandemic may have affected cancer management. This article evaluates the changes in oncological care pathways during the COVID‐19 crisis, based on results of the ONCOCARE‐COV study.
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Affiliation(s)
- Mathias Brugel
- Department of Ambulatory Oncology Care Unit, Reims, France
| | | | - Christine Essner
- Cancer Coordination Center (3C), Pasteur Hospital, Colmar, France
| | | | | | | | - Olivier Bouché
- Department of Ambulatory Oncology Care Unit, Reims, France
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13
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Charles T, Wagner L, Campagne-Loiseau S, Ferry P, Saussine C, Cosson M, Deffieux X, Hummel M, Panel L, Lucot J, Debodinance P, Carlier C, Pizzoferrato A, Vidart A, Hubert T, Ramanah R, Nkounkou E, Fauconnier A, De Tayrac R, Fritel X. Complications, révisions et qualité de vie à moyen terme après 1814 chirurgies de l’incontinence urinaire d’effort par bandelette sous-urétrale : données du registre VIGI-MESH. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Wagner L, Campagne-Loiseau S, De Tayrac R, Ferry P, Deffieux X, Lucot J, Fauconnier A, De Bodinance P, Saussine C, Pizzoferrato A, Carlier C, Thubert T, Panel L, Bosset P, Nkounkou E, Ramanah R, Charles T, Bressler L, Cosson M, Fritel X. Taux de complications et de récidives après chirurgie des prolapsus des organes pelviens : résultats à moyen terme d’une étude prospective chez 2341 patientes (Registre VIGI-MESH). Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.111] [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: 11/29/2022]
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Carlier C, Wirth SB, Cochand F, Hunkeler D, Brunner P. Exploring Geological and Topographical Controls on Low Flows with Hydrogeological Models. Ground Water 2019; 57:48-62. [PMID: 30525183 DOI: 10.1111/gwat.12845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 11/09/2018] [Accepted: 11/11/2018] [Indexed: 06/09/2023]
Abstract
This study investigates how catchment properties influence low-flow dynamics. With 496 synthetic models composed of a bedrock and an alluvial aquifer, we systematically assess the impact of the hydraulic conductivity of both lithologies, of the hillslope and of the river slope on catchment dynamics. The physically based hydrogeological simulator HydroGeoSphere is employed, which allows obtaining a range of low-flow indicators. The hydraulic conductivity of the bedrock Kbedrock , a proxy for transmissivity, is the only catchment property exerting an overall control on low flows and explains 60% of the variance of Q95/Q50. The difference in dynamics of catchments with same Kbedrock depends on hillslope gradients and the alluvial aquifer properties. The buffering capacity of the bedrock is mainly related to Kbedrock and the hillslope gradient. We thus propose the dimensionless bedrock productivity index (BPI) that combines these characteristics with the mean net precipitation. For bedrock only models, the BPI explains 82% of the variance of the ratio of Q95 to mean net precipitation. The alluvial aquifer can significantly influence low flows when the bedrock productivity is limited. Although our synthetic catchment setup is simple, it is far more complex than the available analytical approaches or conceptual hydrological models. The direct application of the results to existing catchments requires nevertheless careful consideration of the local geological topographic and climatic conditions. This study provides quantitative insight into the complex interrelations between geology, topography and low-flow dynamics and challenges previous studies which neglect or oversimplify geological characteristics in the assessment of low flows.
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Affiliation(s)
- Claire Carlier
- Centre for Hydrogeology and Geothermics, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
| | - Stefanie B Wirth
- Centre for Hydrogeology and Geothermics, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
| | - Fabien Cochand
- Centre for Hydrogeology and Geothermics, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
| | - Daniel Hunkeler
- Centre for Hydrogeology and Geothermics, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
| | - Philip Brunner
- Centre for Hydrogeology and Geothermics, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
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16
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Affiliation(s)
| | - C Carlier
- CHU Brugmann-HUDERF, Brussels, Belgium
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17
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Sarica A, Servettaz A, Abou Taam M, Herlem E, Carlier C, Trenque T. [Methadone-induced edema: A case report]. Presse Med 2015; 44:552-4. [PMID: 25753962 DOI: 10.1016/j.lpm.2014.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/28/2014] [Accepted: 12/15/2014] [Indexed: 12/30/2022] Open
Affiliation(s)
- Audrey Sarica
- CHU de Reims, centre régional de pharmacovigilance, 51090 Reims cedex, France
| | - Amélie Servettaz
- CHU de Reims, service de médecine interne, maladies infectieuses et immunologie clinique, 51090 Reims cedex, France
| | - Malak Abou Taam
- CHU de Reims, centre régional de pharmacovigilance, 51090 Reims cedex, France.
| | - Emmanuelle Herlem
- CHU de Reims, centre régional de pharmacovigilance, 51090 Reims cedex, France
| | - Claire Carlier
- CHU de Reims, service de médecine interne, maladies infectieuses et immunologie clinique, 51090 Reims cedex, France
| | - Thierry Trenque
- CHU de Reims, centre régional de pharmacovigilance, 51090 Reims cedex, France
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Faraoni D, Carlier C, Samama CM, Levy JH, Ducloy-Bouthors AS. [Efficacy and safety of tranexamic acid administration for the prevention and/or the treatment of post-partum haemorrhage: a systematic review with meta-analysis]. ACTA ACUST UNITED AC 2014; 33:563-71. [PMID: 25450729 DOI: 10.1016/j.annfar.2014.07.748] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 03/05/2014] [Accepted: 07/10/2014] [Indexed: 11/17/2022]
Abstract
OBJECTIVE(S) Assess the efficacy and safety of tranexamic acid administration for the prevention and/or the treatment of postpartum haemorrhage. STUDY DESIGN Systematic review with meta-analysis. MATERIAL AND METHODS Systematic review of the literature with the aim of identifying prospective, randomised, controlled trials that assessed the effect of tranexamic acid on peripartum blood loss and transfusion requirement in three clinical contexts: (i) prevention of post-partum haemorrhage in case of elective caesarean section, (ii) prevention of post-partum haemorrhage in case of vaginal delivery, (iii) treatment of post-partum haemorrhage. RESULTS Prophylactic administration of tranexamic acid reduced blood loss (mean difference for intraoperative blood loss: -177.9mL, IC 95%: -189.51 to -166.35, total blood loss: -183.94, IC 95%: -198.29 to -169.60), and the incidence of severe post-partum haemorrhage (OR: 0.49, IC 95%: 0.33 to 0.74). None of the published trials assessed the effect of tranexamic acid on blood products administration or transfusion requirement. Only one study assessed and reported the efficacy of tranexamic acid when administered as a treatment for postpartum haemorrhage. A significant reduction in blood loss was reported within 30 minutes after randomisation (P=0.03) and confirmed after 6 hours (median: 170mL (58-323) vs 221mL (110-543), P=0.04). None of the included studies adequately studied the incidence of side effects after tranexamic acid administration. CONCLUSION Although tranexamic acid administration seemed to significantly reduce blood loss and the incidence of severe post-partum haemorrhage, further prospective trials are needed to confirm the efficacy and safety of tranexamic administration in the treatment of postpartum haemorrhage. Those studies should assess the pharmacokinetic profile and the safety of this drug in pregnant women.
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Affiliation(s)
- D Faraoni
- Service d'anesthésie, hôpital universitaire des enfants Reine-Fabiola, centre hospitalier universitaire (CHU) Brugmann, avenue Jean-Joseph-Crocq 15, 1020 Bruxelles, Belgique.
| | - C Carlier
- Service d'anesthésie, hôpital universitaire des enfants Reine-Fabiola, centre hospitalier universitaire (CHU) Brugmann, avenue Jean-Joseph-Crocq 15, 1020 Bruxelles, Belgique
| | - C M Samama
- Service d'anesthésie-réanimation, CHU Cochin, Assistance-publique-Hôpitaux de Paris, 27, rue du Faubourg-St-Jacques, 75014 Paris, France
| | - J H Levy
- Service d'anesthésie-réanimation, Duke University School of Medicine, Durham, 27710 Caroline du Nord, États-Unis
| | - A S Ducloy-Bouthors
- Service d'anesthésie-réanimation, CHRU de Lille Jeanne-de-Flandre, avenue Oscar-Lambret, 59037 Lille, France
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Uhart M, Odouard E, Carlier C, Maire P, Ducher M, Bourguignon L. [Relationship between benzodiazepines use and falls in the elderly: a multicenter study in three geriatric centers of a university hospital]. Ann Pharm Fr 2012; 70:46-52. [PMID: 22341008 DOI: 10.1016/j.pharma.2011.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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: 05/10/2011] [Revised: 09/12/2011] [Accepted: 10/10/2011] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Benzodiazepines are widely used in the elderly, but may induce potentially severe iatrogenic events like falls. The analysis of their use is difficult because of the numerous molecules and dosages available. The aim of the present study is to build a tool to monitor their consumption and to evaluate the relation between this consumption and patient's falls reported in three geriatric institutions. METHODS Conversion coefficients found in the literature allowed the expression of benzodiazepine action with a unique comparator: diazepam. Benzodiazepine consumption observed during 20 consecutive months was collected and weighted by hospital activity. A correlation between benzodiazepine consumption and the number of falls reported during the same period was researched. RESULTS Benzodiazepine consumption expressed in milligrams of diazepam-equivalent per hospitalization day is significantly linked to the number of falls expressed during the same period (R=0.63; p<0.01). However, no statistical bound was found between monthly falls variations and monthly benzodiazepine consumption variations. These results corroborate others published studies: benzodiazepine consumptions are statistically linked to falls, but the reduction of this consumption is of poor predictive value, maybe because of the multifactorial nature of falls. DISCUSSION AND CONCLUSION The expression of benzodiazepine consumption in diazepam-equivalent enables one to estimate the general exposition of patients and to compare the use of each molecule. The statistical link between this indicator and a major iatrogenic event like falls makes it a tool worth interest for both clinicians and pharmacists.
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Affiliation(s)
- M Uhart
- Service pharmaceutique, hôpital Antoine-Charial, hospices civils de Lyon, groupement hospitalier de gériatrie, Francheville, France
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Carlier C, Devie I, Cognigni-Roger S, Legros MC, Curé H, Berger P, Buffet E, Carlier M, Clément F, Farard C, Gay B, Geoffroy P, Girard M, Lartigue B, Lemière Y, Mazataud R, Picaud C. Intérêt de l’épreuve directe de compatibilité (EDC) au laboratoire chez les patients transfusés itératifs en oncologie. Transfus Clin Biol 2010. [DOI: 10.1016/j.tracli.2010.09.097] [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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De Laet C, Carlier C, Robert M, Thiebaut I, Prové G, Sergooris R, Goyens P. [Inborn errors of metabolism: new developments and challenges]. Rev Med Brux 2006; 27 Spec No:Sp74-Sp77. [PMID: 21818897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The concept "inborn error of metabolism" (IEM) arose from the observations of Sir A. Garrod at the beginning of the XXth century. The exponential development, during the last decades, of our knowledge in cellular biology and molecular genetics, and the availability of increasingly more precise diagnostic tools, allow the identification of a still growing number of inborn errors of metabolism. Their physiopathology is better understood. Treatments have considerably improved: more specific diets, new medical treatments, enzyme replacement therapy, organ transplantation, hepatocyte or stem cell transplantation... New techniques are under development, including various strategies of gene therapy. Improved therapeutic efficacy combined with earlier diagnosis have dramatically changed the prognosis of many disorders. As a consequence, new challenging questions have to be answered. Today, patients with an IEM, because of the extreme complexity of their management, need to be looked after by a multidisciplinary team of physicians (pediatricians and internists), dieticians, social workers, psychologists... It is essential, in this complex and rapidly expanding field, that experiences should be shared at national and international level, in order to provide the most adequate care for patients.
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Affiliation(s)
- C De Laet
- Unité de Nutrition et Métabolisme, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Bruxelles
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Delvigne A, Carlier C, Rozenberg S. Is coasting effective for preventing ovarian hyperstimulation syndrome in patients receiving a gonadotropin-releasing hormone antagonist during an in vitro fertilization cycle? Fertil Steril 2001; 76:844-6. [PMID: 11591427 DOI: 10.1016/s0015-0282(01)02007-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To report two cases of coasting during receipt of GnRH antagonists. DESIGN Case report. SETTING University hospital. PATIENT(S) One 27-year-old and one 28-year-old woman, both with risk factors for the ovarian hyperstimulation syndrome (OHSS). INTERVENTION(S) Two IVF treatments during which hMG treatment was stopped until E2 decreased to a safer level during receipt of GnRH antagonist. MAIN OUTCOME MEASURE(S) Development of OHSS and pregnancy. RESULT(S) Embryos were transferred in both women. Neither woman developed OHSS and one ongoing pregnancy was obtained. CONCLUSION(S) Coasting is feasible when a GnRH antagonist is used during IVF. Further studies are needed to evaluate its preventive role in OHSS.
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Affiliation(s)
- A Delvigne
- IVF Center, Department of Obstetrics and Gynecology, St. Peter University Hospital, Rue Haute, 322, 1000, Brussels, Belgium.
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Chovet M, Carlier C, Queguiner P, Mariko S. [Mass treatment of onchocerciasis in 1996]. Med Trop (Mars) 2000; 55:425-8. [PMID: 10906977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Mass treatment of onchocerciasis has changed radically in the last 20 years. With implementation of the Onchocerciasis Control Programme (OCP), use of insecticides to control vector larvae has been effective but has not been extended to all infected areas due to the cost. The consequences of this problem have been lessened thanks to ivermectin, an effective drug that can be administered in a single yearly dose. Although ivermectin does not appear to induce major side-effects, surveillance is necessary after administration in polyparasitized subjects living in zones where loaiasis is present and in hypermicrofilaremic subjects. To assist in the fight against onchocerciasis, ivermectin is distributed free of charge through the Mectizan Foundation by Merck Laboratories. Inexpensive community distribution programs with active participation of the populations at risk have demonstrated their usefulness. The results of mass treatment through the Mectizan Foundation have been excellent. Non-governmental organizations and in particular the Organization for the Prevention of Blindness (OPB) have become increasingly involved in the fight against onchocerciasis. The campaign conducted by the OPB in Mali, Senegal and Guinea illustrate this involvement. The role of non-governmental organizations expanded greatly with the implementation of the APOC programme supported by the World Bank.
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Affiliation(s)
- M Chovet
- L'Organisation pour la Prévention de la Cécité, Programme pour l'Afrique, Paris, France
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Delfaut EM, Carlier C, Cotten A. [Osteo-articular imaging]. J Radiol 1999; 80:542-4. [PMID: 10372339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Carlier C, Pauwels P, Putz P. [Treatment of shoulder dislocation and the prevention of its recurrence]. Rev Med Brux 1998; 19:17-9. [PMID: 9553450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Shoulder dislocation is a frequent pathology with a high level of recurrences especially in young patients. One week immobilization in a Dessault dressing is sufficient if it is followed by free mobilization avoiding external rotation and abduction. A 6 weeks rehabilitation program seems to prevent recurrences.
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Affiliation(s)
- C Carlier
- Service de Chirurgie Orthopédique, C.H.U. Brugmann, U.L.B
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Johnston KP, Harrison KL, Clarke MJ, Howdle SM, Heitz MP, Bright FV, Carlier C, Randolph TW. Water-in-Carbon Dioxide Microemulsions: An Environment for Hydrophiles Including Proteins. Science 1996. [DOI: 10.1126/science.271.5249.624] [Citation(s) in RCA: 478] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Jacob J, Evers S, Bischoff K, Carlier C, Courvalin P. Characterization of the sat4 gene encoding a streptothricin acetyltransferase in Campylobacter coli BE/G4. FEMS Microbiol Lett 1994; 120:13-7. [PMID: 8056285 DOI: 10.1111/j.1574-6968.1994.tb07000.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The sat4 streptothricin resistance gene from Campylobacter coli BE/G4 was cloned into pUC18, and its nucleotide sequence was determined. Streptothricin acetyltransferase activity was detected in Escherichia coli cells containing recombinant plasmid pAT132 which carries the sat4 gene as an insert. The deduced amino acid sequence displayed 21-27% amino acid identity with streptothricin acetyltransferases from E. coli and streptothricin producers Streptomyces lavendulae and Streptomyces noursei. The sat4 gene was detected by hybridization in clinical and environmental isolates of Campylobacter spp.
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Affiliation(s)
- J Jacob
- Unité des Agents Antibactériens, CNRS, Institut Pasteur, Paris, France
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Carlier C, Coste J, Etchepare M, Périquet B, Amédée-Manesme O. A randomised controlled trial to test equivalence between retinyl palmitate and beta carotene for vitamin A deficiency. BMJ 1993; 307:1106-10. [PMID: 8251808 PMCID: PMC1679104 DOI: 10.1136/bmj.307.6912.1106] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVES To determine whether beta carotene is therapeutically equivalent to retinyl palmitate in the formulation currently recommended by the World Health Organisation. DESIGN Randomised blind equivalence trial. SETTING Rural area in Senegal. SUBJECTS Children aged 2-15 years suffering from vitamin A deficiency as defined by abnormal results on eye cytology were randomly allocated treatment with retinyl palmitate (n = 256) and beta carotene (n = 254). MAIN OUTCOME MEASURE Reversion to normal results on eye cytology as defined by the reappearance of goblet cells and normalisation of the epithelial cells. RESULTS Seven weeks after the supplement was given the percentages were 51.2% (124/242) children taking retinyl palmitate and 50.0% (123/246) of those taking beta carotene, who had reverted to normal eye cytology, a difference of 1.2% (95% confidence interval 6.2% to 8.6%) [corrected]. According to an equivalence testing procedure, the two treatments were statistically equivalent; the null hypothesis of non-equivalence was rejected (one tailed p value = 0.03). CONCLUSIONS beta Carotene supplementation seems to be a promising candidate for the alleviation of vitamin A deficiency. It could be given either as high dose capsule or through increased dietary intake. The challenge now is to improve dietary intake of vitamin A in programmes that are effective and sustainable at the community level.
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Affiliation(s)
- C Carlier
- Institut National de la Santé et de la Recherche Médicale (INSERM), Le Kremlin-Bicêtre, France
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Trieu-Cuot P, Poyart-Salmeron C, Carlier C, Courvalin P. Sequence requirements for target activity in site-specific recombination mediated by the Int protein of transposon Tn 1545. Mol Microbiol 1993; 8:179-85. [PMID: 8388531 DOI: 10.1111/j.1365-2958.1993.tb01214.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Excision and integration of Tn1545 occur by reciprocal site-specific recombination between 6 (or 7) bp variable sequences present in the recombining attachment (att) sites and designated overlap regions. We devised an assay for Tn1545 transposition in which derivatives containing the cis-acting transposition sequences (attTn 1545) integrate into a target replicon when complemented in trans by the transposon-encoded integrase Int-Tn. This assay was used to determine the characteristics of the DNA sequence that influence target site selection. Characterization of several integration sites indicated that a 20 bp segment, designated attB, contains the sequences required for target activity. It also appeared that (i) the target activity depends upon the extent of homology between the 7bp segments flanking the overlap regions in attB and attTn 1545, and (ii) the degree of homology between the two recombining overlap regions does not affect the level of target activity and has no influence on integration orientation.
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Affiliation(s)
- P Trieu-Cuot
- Unité des Agents Antibactériens, Institut Pasteur, Paris, France
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Carlier C, Foucart H, Baudrillard JC, Cécile JP. [Percutaneous diagnostic angioscopy. Primary lesions]. J Mal Vasc 1993; 18:51-53. [PMID: 8473814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Efficacy of percutaneous treatments of arterial affections requires the correct choice of indications, necessitating precise knowledge of elementary arterial lesions. Arterial endoscopy appears to be more specific than angiography for this use, since it allows direct vision in vivo of the lesion, a histopathologic approach compared with the non univocal images produced by angiography (for example, an arterial obstruction can result from varied causes). Different accidents to the endothelial surface can be observed: golden yellow atheromatous elevations on a straw yellow background, intimal flaps, mobile intra-luminal vegetations. Established atheromatous stenosis are smooth and regular, or on the contrary ulcerated and edged with irregular flaps capable of provoking an eccentric residual lumen. The vegetating atheromatous lesions may project into the lumen, often as calcified and thus pearly white scales adhering to the wall, or as larger occlusive lesions. When capable of being isolated, a thrombus often completes the stenosis: its recognition is therefore fundamental since its removal exposes the subjacent lesions to be treated. The fresh clot is coral shaped, bright red and mobile in the blood flow. Established clots are compact and greenish brown. At an advanced stage of atheroma the surface of the occluding clot is covered with a regular straw yellow endothelium. In the presence of a dissecting vessel the fibroscope may be introduced into the false channel, no longer showing typical endothelium but a coagulated mass interspersed with fibrous bands. Prosthetic stenosis result from either intimal hyperplasia or a suturing fault with plication.
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Affiliation(s)
- C Carlier
- Centre d'Imagerie, Centre Hospitalier, Lens
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Carlier C, Etchepare M, Ceccon JF, Mourey MS, Amédée-Manesme O. Efficacy of massive oral doses of retinyl palmitate and mango (Mangifera indica L.) consumption to correct an existing vitamin A deficiency in Senegalese children. Br J Nutr 1992; 68:529-40. [PMID: 1445831 DOI: 10.1079/bjn19920110] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Administration of large oral doses of retinyl palmitate has become the most widely practised vitamin A deficiency prevention strategy in developing countries. We conducted a follow-up study among 220 Senegalese children aged 2-7 years suffering from moderate undernutrition to determine the efficacy of vitamin A treatment on their vitamin A status assessed by biochemical and cytological (impression cytology with transfer) methods. The first examination (T = 0 m[onth]) was carried out during April 1989, before the mango (Mangifera indica L,) harvest. The second examination (T = 2 m) was carried out 2 months after vitamin A treatment during June 1989 when ripe mangoes become widely available. Conjunctival cells of the eyes of the children with or without ocular inflammation were responsive to vitamin A administration (P < 0.01). There was a significant increase (P < 0.001) in mean serum retinol and beta-carotene levels between T = 0 m and T = 2 m. Mean serum retinol-binding protein (RBP) and transthyretin (TTR) levels did not differ significantly (P > 0.05) at T = 0 m and T = 2 m. Despite the intake of vitamin A, 54% of the children who had abnormal cytology at T = 0 m remained abnormal at T = 2 m. This was due to inadequate levels of TTR and RBP, presumably due to the cereal diet eaten by the Senegalese population. children with abnormal eye cytology had lower serum retinol levels than those with normal eyes at T = 0 m, and beta-carotene values did not correlate with eye cytological abnormalities at T = 0 m. Children with normal cytology had higher serum retinol and also beta-carotene levels than those with abnormal cytology after massive oral doses of vitamin A and consumption of mangoes at T = 2 m. Retinyl palmitate may, therefore, only lead to partial cytological improvement due to a lack of retinol-carrier proteins but dietary beta-carotene may also be involved.
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Affiliation(s)
- C Carlier
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité 56, Hôpital de Bicêtre, France
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Carlier C, Coste J, Etchepare M, Amédée-Manesme O. Conjunctival impression cytology with transfer as a field-applicable indicator of vitamin A status for mass screening. Int J Epidemiol 1992; 21:373-80. [PMID: 1428495 DOI: 10.1093/ije/21.2.373] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The increasing importance of vitamin A deficiency in even its mild subclinical form underlines the need for a mass screening test. Clinical, biochemical and cytological methods of assessing vitamin A deficiency in a public health setting have been described and widely used. The cytological method shows promise because it enables early detection of vitamin A deficiency. However interpretation is problematic since histopathological changes are gradual with the progressive disappearance of goblet cells and appearance of enlarged epithelial cells. The reliability and validity of the impression cytology with transfer (ICT) test were assessed in order to produce a meaningful standard for this cytological method. The ICT test was performed in Senegal on 1451 children, in the course of two surveys conducted in 1989 and 1990 in rural areas. Reliability, estimated by Cohen's kappa test for evaluating intra-reader variability, and sensitivity were highest for the abnormal-normal classification (kappa = 0.91; 95% confidence interval (CI): 0.89-0.93; and sensitivity = 74%; 95% CI 66-82%). The ICT method is a cheap, noninvasive and easy test to perform in the field. This method is also reproducible and fairly sensitive according to the abnormal-normal classification. As illustrated by our proposed 50% cutoff of abnormal cytology calculated in relation to 5% of serum retinol values below 0.35 mumol/L criterion, ICT only requires a small sample for the assessment of the overall health of a community in contrast to xerophthalmia and blood vitamin A deficiency tests.
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Affiliation(s)
- C Carlier
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité 56, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
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Poyart-Salmeron C, Trieu-Cuot P, Carlier C, MacGowan A, McLauchlin J, Courvalin P. Genetic basis of tetracycline resistance in clinical isolates of Listeria monocytogenes. Antimicrob Agents Chemother 1992; 36:463-6. [PMID: 1605611 PMCID: PMC188458 DOI: 10.1128/aac.36.2.463] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The genetic basis of tetracycline resistance was studied in 25 clinical isolates of Listeria monocytogenes. Resistance to tetracycline was associated with resistance to minocycline and due to the presence of the tet(M) gene in 24 strains. Association of tet(M) with int-Tn, the gene encoding the protein required for the movements of Tn1545-like conjugative transposons, was found in all strains. Cotransfer of tet(M) and int-Tn among L. monocytogenes cells and from L. monocytogenes to Enterococcus faecalis was detected in 7 of the 12 strains studied at frequencies similar to those obtained with the prototype element Tn1545. tet(L), the second most prevalent tetracycline resistance gene in enterococci and streptococci, was detected in the remaining strain, where it was borne by a 5-kb plasmid. These observations indicate that two types of movable genetic elements, transposons and plasmids, in enterococci and streptococci are responsible for emergence of drug resistance in L. monocytogenes.
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Resnikoff S, Filliard G, Carlier C, Luzeau R, Amédée-Manesme O. Assessment of vitamin A deficiency in the Republic of Djibouti. Eur J Clin Nutr 1992; 46:25-30. [PMID: 1559505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In a countrywide survey, we assessed the prevalence of vitamin A deficiency by clinical examination and impression cytology with transfer method (ICT) in a randomized sample of 2445 subjects representative of the population of the Republic of Djibouti. A plasma retinol determination was made on a part of this sample. Results lead to believe that serious vitamin A deficiency may periodically occur in Republic of Djibouti when nutritional conditions become poor. Meanwhile a large number of children, mostly in the rural area, have a marginal vitamin A status and are exposed to a high level of risk.
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Trieu-Cuot P, Carlier C, Poyart-Salmeron C, Courvalin P. An integrative vector exploiting the transposition properties of Tn1545 for insertional mutagenesis and cloning of genes from gram-positive bacteria. Gene 1991; 106:21-7. [PMID: 1657722 DOI: 10.1016/0378-1119(91)90561-o] [Citation(s) in RCA: 95] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have constructed and used an integrative vector, pAT112, that takes advantage of the transposition properties (integration and excision) of transposon Tn1545. This 4.9-kb plasmid is composed of: (i) the replication origin of pACYC184; (ii) the attachment site (att) of Tn1545; (iii) erythromycin-and kanamycin-resistance-encoding genes for selection in Gram- and Gram+ bacteria; and (iv) the transfer origin of IncP plasmid RK2, which allows mobilization of the vector from Escherichia coli to various Gram+ recipients. Integration of pAT112 requires the presence of the transposon-encoded integrase, Int-Tn, in the new host. This vector retains the insertion specificity of the parental element Tn1545 and utilises it to carry out insertional mutagenesis, as evaluated in Enterococcus faecalis. Since pAT112 contains the pACYC184 replicon and lacks most of the restriction sites that are commonly used for molecular cloning, a gene from a Gram+ bacterium disrupted with this vector can be recovered in E. coli by cleavage of genomic DNA, intramolecular ligation and transformation. Regeneration of the gene, by excision of pAT112, can be obtained in an E. coli strain expressing the excisionase and integrase of Tn1545. The functionality of this system was illustrated by characterization of an IS30-like structure in the chromosome of En. faecalis. Derivatives pAT113 and pAT114 contain ten unique cloning sites that allow screening of recombinants having DNA inserts by alpha-complementation in E. coli carrying the delta M15 deletion of lacZ alpha. These vectors are useful to clone and introduce foreign genes into the genomes of Gram+ bacteria.
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Affiliation(s)
- P Trieu-Cuot
- Unité des Agents Antibactériens, Institut Pasteur, Paris, France
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Poyart-Salmeron C, Trieu-Cuot P, Carlier C, Courvalin P. Nucleotide sequences specific for Tn1545-like conjugative transposons in pneumococci and staphylococci resistant to tetracycline. Antimicrob Agents Chemother 1991; 35:1657-60. [PMID: 1656870 PMCID: PMC245236 DOI: 10.1128/aac.35.8.1657] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The distributions of tet(M) and conjugative transposons related to Tn1545 were studied by hybridization in 47 clinical isolates of Streptococcus pneumoniae resistant to tetracycline. Resistance to tetracycline was always associated with resistance to minocycline and was due to the presence of the tet(M) gene. Association of tet(M) with int-Tn, the gene encoding the protein required for the movements of Tn1545-like transposons, was found in all but one strain of S. pneumoniae. In contrast, int-Tn was detected in only 2 of 37 strains of Staphylococcus spp. harboring tet(M).
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Carlier C, Amedee-Manesme O, Moulia-Pelat JP, Ceccon JF. Impression cytology with transfer: a novel nutritional index. J Pediatr Gastroenterol Nutr 1991; 13:220-1. [PMID: 1941419 DOI: 10.1097/00005176-199108000-00019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Trieu-Cuot P, Carlier C, Poyart-Salmeron C, Courvalin P. Shuttle vectors containing a multiple cloning site and a lacZ alpha gene for conjugal transfer of DNA from Escherichia coli to gram-positive bacteria. Gene 1991; 102:99-104. [PMID: 1864514 DOI: 10.1016/0378-1119(91)90546-n] [Citation(s) in RCA: 177] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The mobilizable shuttle cloning vectors, pAT18 and pAT19, are composed of: (i) the replication origins of pUC and of the broad-host-range enterococcal plasmid pAM beta 1; (ii) an erythromycin-resistance-encoding gene expressed in Gram- and Gram+ bacteria; (iii) the transfer origin of the IncP plasmid RK2; and (iv) the multiple cloning site and the lacZ alpha reporter gene of pUC18 (pAT18) and pUC19 (pAT19). These 6.6-kb plasmids contain ten unique cloning sites that allow screening of derivatives containing DNA inserts by alpha-complementation in Escherichia coli carrying the lacZ delta M15 deletion, and can be efficiently mobilized by self-transferable IncP plasmids co-resident in the E. coli donors. Plasmids pAT18, pAT19 and recombinant derivatives have been successfully transferred by conjugation from E. coli to Bacillus subtilis, Bacillus thuringiensis, Listeria monocytogenes, Enterococcus faecalis, Lactococcus lactis, and Staphylococcus aureus at frequencies ranging from 10(-6) to 10(-9). The presence of a restriction system in the recipient dramatically affects (by three orders of magnitude) the efficiency of conjugal transfer of these vectors from E. coli to Gram+ bacteria.
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Affiliation(s)
- P Trieu-Cuot
- Unité des Agents Antibactériens, CNRS UA 271, Institut Pasteur, France
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Carlier C, Moulia-Pelat JP, Ceccon JF, Mourey MS, Malvy D, Fall M, N'Diaye M, Amédée-Manesme O. Prevalence of malnutrition and vitamin A deficiency in the Diourbel, Fatick, and Kaolack regions of Senegal: a controlled study. Am J Clin Nutr 1991; 53:74-7. [PMID: 1898583 DOI: 10.1093/ajcn/53.1.74] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Two hundred and six Senegalese preschool children included in an epidemiological study were selected by their results from impression cytology with transfer (ICT) for assessment of their nutritional state by means of biological variables and for assessment of the diagnostic values of the ICT. A problem of protein-calorie malnutrition existed (transthyretin and retinol-binding protein concentrations were low) associated with vitamin A deficiency (retinol concentrations were low). The sensitivity and specificity of the ICT defined with respect to retinol (threshold fixed at 0.35 mumol/L) varied with the classification criteria of ICT and seemed to be fairly insensitive but specific.
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Affiliation(s)
- C Carlier
- Institut National de la Santé et de la Recherche Médicale INSERM U.56 Hôpital de Bicêtre, Kremlin-Bicêtre, France
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Carlier C, Moulia-Pelat JP, Ceccon JF, Mourey MS, Ameline B, Fall M, N'Diaye M, Amédée-Manesme O. Prevalence of malnutrition and vitamin A deficiency in the Diourbel, Fatick, and Kaolack regions of Senegal: epidemiological study. Am J Clin Nutr 1991; 53:70-3. [PMID: 1898582 DOI: 10.1093/ajcn/53.1.70] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The purpose of our study was to determine the prevalence of protein-calorie malnutrition (PCM), ocular diseases, and vitamin A deficiency in preschool children selected at random in a rural zone of the groundnut belt of Senegal. The prevalence of PCM was 37.1% (95% CI 33.8-40.2%) according to the Waterlow classification, with a majority of stunting, and prevalence of hypovitaminosis A was estimated to be 11.4% (95% CI 9.3-13.5%) by using impression cytology. Furthermore, 19.4% (95% CI 15.8-22.0%) of the children might be defined at risk of deficiency. The prevalence of Bitot's spots was equal to 0.2% (95% CI 0.03-0.9%). A problem of PCM associated with a health-endangering vitamin A deficiency existed.
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Affiliation(s)
- C Carlier
- Institut National de la Santé et de la Recherche Médicale INSERM U.56 Hôpital de Bicêtre, Kremlin-Bicêtre, France
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Carlier C, Moulia-Pelat JP, Ceccon JF, Mourey MS, Fall M, N'Diaye M, Amédée-Manesme O. Prevalence of malnutrition and vitamin A deficiency in the Diourbel, Fatick, and Kaolack regions of Senegal: feasibility of the method of impression cytology with transfer. Am J Clin Nutr 1991; 53:66-9. [PMID: 1898581 DOI: 10.1093/ajcn/53.1.66] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The evaluation of the prevalence of ophthalmological diseases and vitamin A deficiency in Senegalese preschool-aged children enabled us to confirm the method of impression cytology with transfer (ICT) and to assess the impact of ophthalmological diseases on the cytological appearance of conjunctival cells. A simplification of the ICT method consisted of transferring cells present on a strip of paper to a glass slide by finger pressure. Harris-Schorr staining of the sample papers confirmed the results obtained by the transfer. Inflammatory trachoma influenced the results of the test. This simple method will prove very helpful for detection of vitamin A deficiency in children in underdeveloped areas.
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Affiliation(s)
- C Carlier
- Institut National de la Santé et de la Recherche Médicale, INSERM U 56, Hôpital de Bicêtre, Kremlin-Bicêtre, France
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Abstract
Aminoglycoside-resistant strains of Staphylococcus and Enterococcus, approximately 500 of each, were screened by dot blot hybridization for the presence of genes encoding aminoglycoside-modifying enzymes. The MICs of various aminoglycosides for the strains were determined, and the enzyme contents of the cells were inferred from the resistance phenotypes. The agreements (in percent) of the hybridization results with the deduced enzyme contents for Staphylococcus and Enterococcus species were, respectively, 80 and 87.6 for ANT(6) (aminoglycoside nucleotidyltransferase), 99.8 and 100 for both APH(3') (aminoglycoside phosphotransferase) and APH(2")-AAC(6') (aminoglycoside acetyltransferase), and 100 and 100 for ANT(4'). The weak correlation obtained with the probe for ANT(6) was due to the fact that gram-positive cocci can also be streptomycin resistant by synthesis of APH(3") or ANT(3")(9) and by ribosomal mutation. The remaining probes appeared to be specific: they hybridized with all the resistant clinical isolates but not with the susceptible strains. These results indicate that, except for streptomycin, nucleic acid hybridization is a valid approach for the detection and characterization of aminoglycoside resistance in gram-positive cocci.
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Affiliation(s)
- H Ounissi
- Unité des Agents Antibactériens, Unité Associée Centre National de la Recherche Scientifique 271, Institut Pasteur, Paris, France
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Poyart-Salmeron C, Trieu-Cuot P, Carlier C, Courvalin P. The integration-excision system of the conjugative transposon Tn 1545 is structurally and functionally related to those of lambdoid phages. Mol Microbiol 1990; 4:1513-21. [PMID: 1962839 DOI: 10.1111/j.1365-2958.1990.tb02062.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Excision of Tn1545 and related conjugative transposons of Gram-positive bacteria occurs by reciprocal site-specific recombination between non-homologous regions of the transposon-target junctions. Excisive recombination requires two transposon-encoded proteins designated Xis-Tn and Int-Tn. We have shown that, following excision, Tn1545 is a circular structure with ends separated by either of the two hexanucleotides that were present at the transposon-target junctions. Using a trans-complementation assay, we have demonstrated that Int-Tn is able to catalyse in vivo integration of a circular intermediate of Tn1545 defective for integration and excision. comparison of integration sites suggests that limited sequence homology at the vicinity of the recombining sites is required for integration of the element. These data support the hypothesis that the integration/excision systems of conjugative transposons from Gram-positive cocci and of lambdoid phages from Gram-negative bacilli have evolved from a common ancestor.
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Affiliation(s)
- C Poyart-Salmeron
- Unité des Agents Antibactériens, CNRS UA 271, Institut Pasteur, Paris, France
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Abstract
Enterococcus faecium BM4102 was resistant to macrolide-lincosamide-streptogramin B-type (MLS) antibiotics; tetracycline-minocycline; and high levels of kanamycin, neomycin, tobramycin, and dibekacin but not gentamicin. This aminoglycoside resistance phenotype is new in enterococci. The genes conferring resistance to aminoglycosides and MLS antibiotics in this strain were carried on a plasmid, pIP810, that was self-transferable to to other Enterococcus strains. Resistance to tobramycin and structurally related aminoglycosides, kanamycin, neomycin, and dibekacin, was due to synthesis of a 4',4"-aminoglycoside nucleotidyltransferase. Homology was detected by hybridization between pIP810 DNA and a probe specific for a gene encoding an enzyme with identical site specificity in staphylococci. The bacteriostatic activity of amikacin apparently was not affected by the presence of the enzyme, although it was modified in vitro. However, the bactericidal activity of amikacin and the synergism of this aminoglycoside with penicillin were abolished.
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Affiliation(s)
- C Carlier
- Unité des Agents Antibactériens, Institut Pasteur, Paris, France
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Trieu-Cuot P, Carlier C, Poyart-Salmeron C, Courvalin P. A pair of mobilizable shuttle vectors conferring resistance to spectinomycin for molecular cloning in Escherichia coli and in gram-positive bacteria. Nucleic Acids Res 1990; 18:4296. [PMID: 2143017 PMCID: PMC331233 DOI: 10.1093/nar/18.14.4296] [Citation(s) in RCA: 121] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- P Trieu-Cuot
- Unité des Agents Antibactériens, CNRS UA 271, Institut Pasteur, Paris, France
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Trieu-Cuot P, Poyart-Salmeron C, Carlier C, Courvalin P. Nucleotide sequence of the erythromycin resistance gene of the conjugative transposon Tn1545. Nucleic Acids Res 1990; 18:3660. [PMID: 2163525 PMCID: PMC331044 DOI: 10.1093/nar/18.12.3660] [Citation(s) in RCA: 130] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- P Trieu-Cuot
- Unité des Agents Antibactériens, CNRS UA 271, Institut Pasteur, Paris, France
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Abstract
A strain of Listeria monocytogenes, isolated from a patient with meningoencephalitis, was resistant to chloramphenicol, erythromycin, streptomycin, and tetracycline. The genes conferring resistance to these antibiotics were carried by a 37-kb plasmid, pIP811, that was self-transferable to other L monocytogenes cells, to enterococci-streptococci, and to Staphylococcus aureus. The efficacy of transfer and the stability of pIP811 were higher in enterococci-streptococci than in the other gram-positive bacteria. As indicated by nucleic acid hybridisation, the genes in pIP811 conferring resistance to chloramphenicol, erythromycin, and streptomycin were closely related to plasmid-borne determinants that are common in enterococci-streptococci. Plasmid pIP811 shared extensive sequence homology with pAM beta 1, the prototype broad host range resistance plasmid in these two groups of gram-positive cocci. These results suggest that emergence of multiple antibiotic resistance in Listeria spp is due to acquisition of a replicon originating in enterococci-streptococci. The dissemination of resistance to other strains of L monocytogenes is likely.
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Cécile JP, Baudrillard JC, Carlier C, Foucart H, Page P, Eckstein U. [Percutaneous angioscopy in the diagnosis of arteriopathies of the lower limbs]. J Radiol 1990; 71:325-9. [PMID: 2213694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Because of the poor specificity of the arteriography, the authors have performed a percutaneous angioscopy before every angioplasty of the arteries of lower limbs for nearly 3 years. They define the angioscopy and describe materials and technique. The percutaneous route without surgery and without anesthesia underlines the originality of the technique. The great difficulty is to counter-pulse the arterial inflow. The rate of saline irrigation and all the means of arterial blockade are described. In the second part, the "elementary images" are classified. The authors insist on the specificity of the angioscopy in the interpretation of arterial obstructions. Because of this specificity, the right treatment can be applied to any type of lesion. Angioscopy permits to foresee endoluminal surgery technique.
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Affiliation(s)
- J P Cécile
- Département d'Imagerie Médicale, Centre Hospitalier du Dr Schaffner, Lens
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Poyart-Salmeron C, Trieu-Cuot P, Carlier C, Courvalin P. Molecular characterization of two proteins involved in the excision of the conjugative transposon Tn1545: homologies with other site-specific recombinases. EMBO J 1989; 8:2425-33. [PMID: 2551683 PMCID: PMC401188 DOI: 10.1002/j.1460-2075.1989.tb08373.x] [Citation(s) in RCA: 116] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Excision is probably the initial and rate-limiting step of the movements of conjugative transposons of Gram-positive bacteria such as Tn916 and Tn1545. We have shown, by molecular cloning and DNA sequencing, that a 2058 bp Sau3A right-junction fragment of transposon Tn1545 specifies two gene products that are involved in the excision of the element. The DNA sequence of these genes, designated orf1 and orf2, has been determined and the corresponding proteins, ORF1 and ORF2, have been identified in a bacterial cell-free coupled transcription-translation system. These proteins are freely diffusible since they are able to trans-complement in vivo a deletion derivative of Tn1545 defective for excision. Using an in vivo complementation assay, we have demonstrated that ORF2 alone is able to catalyse excision and that ORF1 strongly stimulates the activity of ORF2. We also found that ORF1 and ORF2 display local homology with, respectively, proteins Xis and Int from lamboid phages, which suggests that these excision systems have a common origin. Based on the functional properties of the integrase of bacteriophage lambda, on the analysis of the nucleotide sequence of the junction fragments and of the target before insertion and after excision, a model is proposed for ORF2-catalysed excision of Tn1545 and related conjugative transposons.
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Affiliation(s)
- C Poyart-Salmeron
- Unité des Agents Antibactériens, CNRS UA 271, Institut Pasteur, Paris, France
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Abstract
The possibility of transfer of genetic information by conjugation from gram-positive to gram-negative bacteria was investigated with a pBR322-pAM beta 1 chimeric plasmid, designated pAT191. This shuttle vector, which possesses the tra functions of the streptococcal plasmid pAM beta 1, was conjugatively transferred from Enterococcus faecalis to Escherichia coli with an average frequency of 5 x 10(-9) per donor colony formed after mating.
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Affiliation(s)
- P Trieu-Cuot
- Centre National de la Recherche Scientifique Unité Associée 271, Institut Pasteur, Paris, France
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