Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}}, 'protocolSection': {'designModule': {'bioSpec': {'retention': 'SAMPLES_WITHOUT_DNA', 'description': 'Preserving plasma by utilizing blood samples remaining from blood gas analysis during surgical procedures.'}, 'studyType': 'OBSERVATIONAL', 'designInfo': {'timePerspective': 'PROSPECTIVE', 'observationalModel': 'COHORT'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 308}, 'patientRegistry': False}, 'statusModule': {'overallStatus': 'COMPLETED', 'startDateStruct': {'date': '2023-09-20', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2025-01', 'completionDateStruct': {'date': '2024-10-30', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2025-01-17', 'studyFirstSubmitDate': '2023-10-06', 'studyFirstSubmitQcDate': '2023-10-06', 'lastUpdatePostDateStruct': {'date': '2025-01-20', 'type': 'ACTUAL'}, 'studyFirstPostDateStruct': {'date': '2023-10-12', 'type': 'ACTUAL'}, 'primaryCompletionDateStruct': {'date': '2024-07-30', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'survival', 'timeFrame': '24 hours', 'description': 'survival and KKS related factors levels'}, {'measure': 'Cardiac function', 'timeFrame': '24 hours', 'description': 'echocardiography and Myo-cardial enzymonram'}, {'measure': 'POD-postoperative delirium', 'timeFrame': '7 days', 'description': 'Confusion Assessment Method for the ICU (CAM-ICU)'}], 'secondaryOutcomes': [{'measure': 'survival', 'timeFrame': '28 days', 'description': 'survival and clinical symptom'}]}, 'oversightModule': {'oversightHasDmc': True, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'keywords': ['KKS; tissue kallikrein; ;cardiosurgery;cardiopulmonary bypass'], 'conditions': ['Cardiosurgery']}, 'descriptionModule': {'briefSummary': 'We aimed to established an interlink among the kallikrein-kinin system (KKS), endothelial dysfunction and cardiac inflammation in response to cardiosurgery , using clinic investigation.', 'detailedDescription': 'The KKS, which is located on the vascular endothelium, plays a pivotal role in maintaining cardiovascular homeostasis. Tissue kallikrein (TK), a serine protease and a key enzyme of the KKS, is responsible for cleaving low-molecular-weight kininogen into bradykinin and kallidin. Under normal physiological conditions, the activation of the B2 receptor (B2R)/endothelial nitric oxide synthase (eNOS) signaling pathway leads to the transient release of nitric oxide (NO), resulting in cardiovascular protection. However, during reperfusion injury, the activation of the B1 receptor (B1R)/inducible nitric oxide synthase (iNOS) pathway leads to excessive NO production, promoting inflammation and cellular injury. Therefore, it is hypothesized that the KKS plays a critical role in the early stages of reperfusion injury during cardiac surgery with cardiopulmonary bypass.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'maximumAge': '80 Years', 'minimumAge': '18 Years', 'samplingMethod': 'PROBABILITY_SAMPLE', 'studyPopulation': 'Patients undergoing cardiac surgery: (coronary artery bypass grafting, heart valve surgery, Morrow operation, aortic dissection surgery).', 'healthyVolunteers': False, 'eligibilityCriteria': "Inclusion Criteria:\n\n1\\) Willing to participate in the study. 2) Age ≥ 18 years and ≤ 80 years. 3) Patients undergoing cardiac surgery: (coronary artery bypass grafting, heart valve surgery, Morrow operation, aortic dissection surgery).\n\nExclusion Criteria:\n\n1\\) Patients with heart failure. 2) Patients experiencing adverse events during surgery. 3) Solid organ or bone marrow transplant recipients. 4) Patients with autoimmune diseases, tumors, or those who received high-dose steroid or immunosuppressant therapy within the past two months. 5) Deemed unsuitable for participation in this study by the researchers' judgment.\n\n\\-"}, 'identificationModule': {'nctId': 'NCT06080295', 'briefTitle': 'The Kallikrein-Kinin System in Cardiac Surgery', 'organization': {'class': 'OTHER', 'fullName': 'Tongji Hospital'}, 'officialTitle': 'The Involvement of the Kallikrein-Kinin System in the Pathogenesis of Postoperative Injury in Cardiac Surgery: An Observational Study', 'orgStudyIdInfo': {'id': 'TJ-IRB20230932'}}, 'contactsLocationsModule': {'locations': [{'zip': '430030', 'city': 'Wuhan', 'state': 'Hubei', 'country': 'China', 'facility': 'Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology', 'geoPoint': {'lat': 30.58333, 'lon': 114.26667}}], 'overallOfficials': [{'name': 'Qin Zhang, phd', 'role': 'PRINCIPAL_INVESTIGATOR', 'affiliation': 'Tongji Hospital'}]}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Qin Zhang', 'class': 'OTHER'}, 'responsibleParty': {'type': 'SPONSOR_INVESTIGATOR', 'investigatorTitle': 'phd', 'investigatorFullName': 'Qin Zhang', 'investigatorAffiliation': 'Tongji Hospital'}}}}