Ignite Creation Date:
2025-12-25 @ 12:05 AM
Ignite Modification Date:
2026-01-05 @ 5:30 PM
Study NCT ID:
NCT03262558
Status:
COMPLETED
Last Update Posted:
2022-12-14
First Post:
2017-08-22
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Mediastinitis and Staphylococcus Aureus
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}, 'conditionBrowseModule': {'meshes': [{'id': 'D007239', 'term': 'Infections'}, {'id': 'D013203', 'term': 'Staphylococcal Infections'}, {'id': 'D003428', 'term': 'Cross Infection'}], 'ancestors': [{'id': 'D016908', 'term': 'Gram-Positive Bacterial Infections'}, {'id': 'D001424', 'term': 'Bacterial Infections'}, {'id': 'D001423', 'term': 'Bacterial Infections and Mycoses'}, {'id': 'D007049', 'term': 'Iatrogenic Disease'}, {'id': 'D020969', 'term': 'Disease Attributes'}, {'id': 'D010335', 'term': 'Pathologic Processes'}, {'id': 'D013568', 'term': 'Pathological Conditions, Signs and Symptoms'}]}}, 'protocolSection': {'designModule': {'studyType': 'OBSERVATIONAL', 'designInfo': {'timePerspective': 'PROSPECTIVE', 'observationalModel': 'COHORT'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 27}, 'patientRegistry': False}, 'statusModule': {'overallStatus': 'COMPLETED', 'startDateStruct': {'date': '2016-07-04', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2022-12', 'completionDateStruct': {'date': '2019-09-29', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2022-12-13', 'studyFirstSubmitDate': '2017-08-22', 'studyFirstSubmitQcDate': '2017-08-22', 'lastUpdatePostDateStruct': {'date': '2022-12-14', 'type': 'ACTUAL'}, 'studyFirstPostDateStruct': {'date': '2017-08-25', 'type': 'ACTUAL'}, 'primaryCompletionDateStruct': {'date': '2017-07-01', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Variation of plasma IDO activity', 'timeFrame': 'Baseline and the morning following surgery', 'description': 'IDO activity is evaluated by the Kynurenin / Tryptophan ratio before and after ECC.\n\nEnzymatic activities will be measured by high performance liquid chromatography (HPLC) on pre- and post-operative blood tests'}], 'secondaryOutcomes': [{'measure': 'Variation of phagocytosis capacity of PMNs', 'timeFrame': 'Baseline and the morning following surgery', 'description': 'Comparison before and after ECC'}, {'measure': 'Variation of bactericidal capacity of PMNs', 'timeFrame': 'Baseline and the morning following surgery', 'description': 'Comparison before and after ECC'}, {'measure': 'Variation of phagocytosis capacity of macrophages', 'timeFrame': 'Baseline and the morning following surgery', 'description': 'Comparison before and after ECC'}, {'measure': 'Variation of bactericidal capacity of macrophages', 'timeFrame': 'Baseline and the morning following surgery', 'description': 'Comparison before and after ECC'}, {'measure': 'Effect of an inhibitor of IDO on phagocytosis capacities of PMNs', 'timeFrame': 'The day following surgery'}, {'measure': 'Effect of an inhibitor of IDO on bactericidal capacities of PMNs', 'timeFrame': 'The day following surgery'}, {'measure': 'Effect of an inhibitor of IDO on phagocytosis capacities of macrophages', 'timeFrame': 'The day following surgery'}, {'measure': 'Effect of an inhibitor of IDO on bactericidal capacities of macrophages', 'timeFrame': 'The day following surgery'}, {'measure': 'Quantification of lymphocytic apoptosis before and after the ECC', 'timeFrame': 'Baseline and the morning following surgery', 'description': 'Quantification of apoptosis by flow cytometry'}, {'measure': 'Quantification of lymphocytic apoptosis in the presence of an inhibitor of IDO', 'timeFrame': 'The day following surgery', 'description': 'Quantification of apoptosis by flow cytometry'}]}, 'oversightModule': {'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'keywords': ['staphylococcus aureus', 'nosocomial infection'], 'conditions': ['Surgery, Cardiac', 'Infection']}, 'descriptionModule': {'briefSummary': 'Cardiac surgery with extracorporeal circulation (ECC) yields a deep immune system dysfunction that exposes patients to postoperative infectious complications. Among these, post-operative mediastinitis with Staphylococcus aureus (SA) generates significant morbidity and mortality. Two radically different approaches have been proposed in recent years to reduce the incidence of this complication. A first approach has attempted, without real success, to decrease postoperative immunosuppression. The second, more efficient, consisted of screening and preoperatively treating patients colonized with SA. However, although its incidence has decreased, postoperative mediastinitis remains a terrible nosocomial infection. The authors believe that a thorough analysis of the immunological changes induced by cardiac surgery will initiate active therapeutics to reduce the post-operative immunosuppression phase, thereby decreasing the risk of nosocomial infections. In addition, a study of the interactions between the operated (host) and staphylococcus aureus (pathogenic) immune systems will provide a better understanding of the mechanisms that expose patients to this bacterium.', 'detailedDescription': 'In particular, changes induced by the ECC will be evaluated on:\n\n* Indoleamine 2,3-dioxygenase activity (IDO)\n* Apoptosis of lymphocytes and dendritic cells\n* Polymorphonuclear neutrophils (PMNs)\n* Myeloid Derived Suppressor Cells (MDSC )\n\nAfter general anesthesia and arterial catheterization and prior to the start of ECC, blood samples will be taken for flow cytometry studies, for the purification of PMNs and monocytes. The purified PMNs and monocytes will then be used for the measurement of cytokine, phagocytosis and bactericidal production capacities.\n\nThe morning following surgery, blood samples will be taken and follow the same process.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'minimumAge': '18 Years', 'samplingMethod': 'NON_PROBABILITY_SAMPLE', 'studyPopulation': 'Patients in the aftermath of an ECC for cardiac surgery are investigated to look for the origin of a hypo-reactivity of PMNs and macrophages during exposure to staphylococcus aureus', 'healthyVolunteers': False, 'eligibilityCriteria': 'Inclusion criteria\n\n* Patients over 18 years of age\n* Patients who require cardiac surgery (valvular and / or coronary) with extracorporeal circulation.\n\nNon inclusion criteria\n\n* Chronic respiratory diseases,\n* Preoperative left ventricular dysfunction (LVEF \\<50%),\n* Immunosuppression (HIV infection, systemic corticosteroid therapy, history of cancer in the year before surgery),\n* Persons subject to legal protection (safeguard of justice, curatorship, guardianship),\n* Persons deprived of liberty.'}, 'identificationModule': {'nctId': 'NCT03262558', 'acronym': 'MEDIASTAPH', 'briefTitle': 'Mediastinitis and Staphylococcus Aureus', 'organization': {'class': 'OTHER', 'fullName': 'Rennes University Hospital'}, 'officialTitle': 'Immunological and Bacteriological Approaches to the Development of Postoperative Mediastinitis With Staphylococcus Aureus', 'orgStudyIdInfo': {'id': '35RC16_9886'}}, 'armsInterventionsModule': {'armGroups': [{'label': 'Patients with ECC', 'description': 'No intervention', 'interventionNames': ['Other: No intervention']}], 'interventions': [{'name': 'No intervention', 'type': 'OTHER', 'description': 'Patients will undergo standard clinical routine practice in this indication', 'armGroupLabels': ['Patients with ECC']}]}, 'contactsLocationsModule': {'locations': [{'zip': '35033', 'city': 'Rennes', 'country': 'France', 'facility': 'Rennes Hospital University', 'geoPoint': {'lat': 48.11109, 'lon': -1.67431}}], 'overallOfficials': [{'name': 'Jean-Marc TADIE, Md, PhD', 'role': 'STUDY_DIRECTOR', 'affiliation': 'CHU Rennes'}]}, 'ipdSharingStatementModule': {'ipdSharing': 'NO'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Rennes University Hospital', 'class': 'OTHER'}, 'responsibleParty': {'type': 'SPONSOR'}}}}