Study on the Role of Gamma Delta T Cells in Sepsis Immunosuppression and Its Molecular Mechanism

NCT ID: NCT02361970

Last Updated: 2017-05-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

84 participants

Study Classification

OBSERVATIONAL

Study Start Date

2014-05-31

Study Completion Date

2015-05-31

Brief Summary

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The purpose of the study is to evaluate the status and function of gamma delta T cells in peripheral blood of sepsis patients.

Detailed Description

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Sepsis therapy is a prominent problem of the modern critical care medicine,and improving the level of sepsis treatment by immune intervention measures is a hot research topic with close attention.Gamma delta T cells is considered as one new T lymphocyte subset in recent years,which playing an important role in resistance to infection,anti-tumor and immune regulating function in the body.First,we played attention to the status and function of gamma delta T cells in peripheral blood of sepsis patients including differentiation marker,subtype and production of related cytokine,and then the molecular mechanism of insufficient gamma delta T cells.At the same time the responsibility of gamma delta T cells of sepsis patients to certain bacteria and viral antigen and the regulation of gamma delta T cells on other natural immune cells including NK cells and mononuclear cells were studied to identify the status and role gamma delta T cells in sepsis immunosuppression by culture in vitro.Further we studied the effect of specific stimulants on proliferation and activation of gamma delta T cells in patients with sepsis and also anti-infection acquired by gamma delta T cells,expecting as an entry point to explore new treatment strategy to sepsis.

Conditions

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Sepsis

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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severe sepsis and septic shock

patients were diagnosed severe sepsis or septic shock

No interventions assigned to this group

patient control

Patients after elective surgeries presented with SIRS but without sepsis

No interventions assigned to this group

volunteer

Health persons

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* clinical symptoms of severe sepsis and septic shock
* age over 18 years

Exclusion Criteria

* preexisting autoimmune disease
* patients received immuno-suppressive treatment in the previous 6 months
* patients with chronic infection,e.g.tuberculosis,hepatitis or HIV infection,etc.
* pregnancy
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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West China Hospital

OTHER

Sponsor Role lead

Responsible Party

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Kang Yan

Director of Intensive Care Unit

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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West China Hospital,Sichuan University

Chengdu, Sichuan, China

Site Status

Countries

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China

Other Identifiers

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Sepsis-kyan0127

Identifier Type: -

Identifier Source: org_study_id

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