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Trial registered on ANZCTR
Registration number
ACTRN12611000980932
Ethics application status
Not yet submitted
Date submitted
10/09/2011
Date registered
14/09/2011
Date last updated
14/09/2011
Type of registration
Prospectively registered
Titles & IDs
Public title
Whether the antioxidants can prevent patients with obstructive jaundice from the hypotension in operation.
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Scientific title
Compared with controls ,whether the treatment of antioxidants can alleviate vascular hyporesponsiveness in patients with obstructive jaundice
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Secondary ID [1]
263018
0
Nil
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Universal Trial Number (UTN)
U1111-1124-2612
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
obstructive jaundice
270742
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vascular hyporesponsiveness
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Condition category
Condition code
Cardiovascular
270920
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0
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Diseases of the vasculature and circulation including the lymphatic system
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Anaesthesiology
270921
270921
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0
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Other anaesthesiology
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Oral and Gastrointestinal
270946
270946
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0
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Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Glutathione reduced by Intravenous injection,240mg,every day,7 days before abdominal operation
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Intervention code [1]
269361
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Treatment: Drugs
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Comparator / control treatment
intravenous saline injection
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Control group
Placebo
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Outcomes
Primary outcome [1]
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blood pressure from radial artery cannula
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Assessment method [1]
279589
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Timepoint [1]
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every 5 minutes for the duration of the operation
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Primary outcome [2]
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pulmonary arterial wedge pressure from pulmonary artery balloon flow catheter(Swan-ganz catheter)
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Assessment method [2]
279618
0
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Timepoint [2]
279618
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every 5 minutes for the duration of the operation
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Primary outcome [3]
279619
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heart rate from monitor
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Assessment method [3]
279619
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Timepoint [3]
279619
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every 5 minutes for the duration of the operation
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Secondary outcome [1]
287978
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the expression of alpha-advenergic receptors protein on mesenteric artery by Westen blot
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Assessment method [1]
287978
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Timepoint [1]
287978
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immediately after operation
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Secondary outcome [2]
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mRNA expressing alpha-advenergic receptors on mesenteric artery by Real time PCR(Polymerase chain reaction)
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Assessment method [2]
294045
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Timepoint [2]
294045
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immediately after operation
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Eligibility
Key inclusion criteria
participants with obstructive jaundice(serum total bilirubin>100umol/L)caused by neoplasm of the bile duct or the head of the pancreas who will undergo abdominal operation
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Minimum age
50
Years
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Maximum age
70
Years
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Sex
Males
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Can healthy volunteers participate?
No
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Key exclusion criteria
females,<50 years >70 years,BMI>30kg/m2 <18kg/m2,diabetes,cardiovascular diseases
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
central randomisation by computer
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
simple randomisation using a randomisation table created by computer
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 4
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
15/10/2011
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
80
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
3822
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China
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State/province [1]
3822
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Shanghai
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Funding & Sponsors
Funding source category [1]
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Government body
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Name [1]
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National Natural Science Foundaton of China
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Address [1]
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83 Shuangqing Road
Haidian District
Beijing China
100085
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Country [1]
269820
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China
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Primary sponsor type
Hospital
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Name
Department of Anesthesiology,Easten Hepatobiliary Hospital
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Address
225 Changhai Road
Yangpu District
Shanghai China
200438
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Country
China
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Secondary sponsor category [1]
268853
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Individual
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Name [1]
268853
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Weifeng Yu PhD.MD.
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Address [1]
268853
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Department of Anesthesiology,Easten Hepatobiliary Surgery Hospital
225 Changhai Road
Yangpu District
Shanghai China
200438
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Country [1]
268853
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China
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Ethics approval
Ethics application status
Not yet submitted
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Ethics committee name [1]
271787
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The Ethics Committee of The Second Military Medical University
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Ethics committee address [1]
271787
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800 Xiangyin Road Yangpu District Shanghai China 200433
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Ethics committee country [1]
271787
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China
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Date submitted for ethics approval [1]
271787
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01/09/2011
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Approval date [1]
271787
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Ethics approval number [1]
271787
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Summary
Brief summary
1.Vascular hyporesponsiveness in patients with obstructive jaundice is a common problem during operation. It causes high complication and high mortality during preoperative period. But the mechanism is still unknown. There is still no effective method to prevent and treat vascular hyporesponsiveness. 2.Patients with obstructive jaundice produce great amount of Recative Oxygen Species(ROS). The excessive ROS seem to have two effects on blood vessel by the a-advenergic receptors(a-AR). The acute and short-term effect changes the expression, affinity, phosphorylation level of a-AR and cause the decreased contractility of blood vessel. The chronic and long-term effect causes the remodeling of blood vessel by a-AR signal pathway through cell hypertrophy, hyperplasia and apoptosis. These two effects may result in vascular hyporesponsiveness. 3.Therefore, the present research focuses on the vascular hyporesponsiveness in patients with obstructive jaundice caused by ROS through a-AR. The research may put forward feasible explanations of unstable haemodynamics in obstructive jaundice patients. It may also offer a new target to prevent and treat the unstable haemodynamics to increase the preoperative safety in obstructive jaundice patients.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Address
33110
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Country
33110
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Jiaying Chen .MD.
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Address
16357
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Department of Anesthesiology,Easten Hepatobiliary Surgery Hospital
225 Changhai Road
Yangpu District
Shanghai China
200438
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Country
16357
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China
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Phone
16357
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+86 015850557096
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Fax
16357
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+86 021 65564166
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Email
16357
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[email protected]
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Contact person for scientific queries
Name
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Weifeng Yu.PhD.MD.
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Address
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Department of Anesthesiology,Easten Hepatobiliary Surgery Hospital
225 Changhai Road
Yangpu District
Shanghai China
200438
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Country
7285
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China
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Phone
7285
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86 013901961704
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Fax
7285
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+86 021 65564166
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Email
7285
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
Source
Title
Year of Publication
DOI
Embase
Alterations of actin cytoskeleton and arterial protein level in patients with obstructive jaundice.
2022
https://dx.doi.org/10.1590/1678-4685-GMB-2021-0419
N.B. These documents automatically identified may not have been verified by the study sponsor.
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