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A Prospective Study of The Complement Depletion in Patients With Severe Abdominal Sepsis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01568853
Recruitment Status : Completed
First Posted : April 2, 2012
Last Update Posted : April 6, 2012
Information provided by (Responsible Party):
Jianan Ren, Jinling Hospital, China

Brief Summary:
The role of complement system in bridging innate and adaptive immunity has been confirmed in various invasive pathogens. The aim of this study is to investigate the alteration of complement C3 in patients with severe abdominal sepsis and evaluate the role of complement C3 depletion in prognosis of such patients. The relationship between complement C3 depletion and adaptive immunity is studied meanwhile.

Condition or disease Intervention/treatment Phase
Severe Sepsis Pancreatitis Abdominal Abscess Appendicitis Digestive System Fistula Drug: Norepinephrine Procedure: Open abdomen Other: enteral nutrition Other: parenteral nutrition Not Applicable

Detailed Description:

Severe abdominal sepsis remains a significant cause of death in patients undergoing intra-abdominal infection, in despite of recent declines in overall mortality. There is a abundant evidence to suggest complement activation during sepsis. While there is great interest in complement by-products in human sepsis, few studies focus on the persistent consumption of complement components and its role in prognosis of sepsis. Complement C3 is indispensable community pathway for complement activation. In a way, the alteration of C3 levels can affect the whole status of complement biological functions.

In clinical practice, the severe abdominal sepsis would develop compromised immune function if the intra-abdominal infection is not well controlled. The down-regulated T- and B-cell immune responses to sepsis are correlated to the decreased immune defense. To our knowledge, there are few human data that have investigated the relationship between complement depletion and adaptive immunity in severe abdominal sepsis. The investigators hypothesize that the complement C3 depletion during sepsis has a stronger association with the down-regulated adaptive immunity and can be regarded as a essential risk factor to predict the prognosis of such critical illness.

The purpose of this prospective study is two-fold. First, the investigators observe, in a cohort of patients with severe abdominal sepsis, the levels of complement components and percentages of T cell subsets after admission to evaluate the relationship between complement system and adaptive immunity. Second, the investigators also evaluate the application of the C3 related-indexes (C3, C3a, Factor H, DAF, etc.) to patients undergoing severe abdominal sepsis and to develop an alternative model to predict its prognosis.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 75 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Screening
Official Title: The Complement C3 Depletion in Patients With Severe Abdominal Sepsis: Risk Prediction and the Association With Down-regulated Adaptive Immunity
Study Start Date : November 2011
Actual Primary Completion Date : March 2012
Actual Study Completion Date : March 2012

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Sepsis

Intervention Details:
  • Drug: Norepinephrine
    Intravenously, 10 ug/min, 24 hours
  • Procedure: Open abdomen
    IAH >=20 mmHg, and ACS emerged, such as low urine and decreased FiO2 quickly.
  • Other: enteral nutrition
    500-1500 kcal/day; Nasogastric tube feeding;
    Other Name: Peptison (SP; Nutricia, Shanghai, China)
  • Other: parenteral nutrition
    3000 mL parenteral nutrition fluid, intravenously.
    Other Name: Made by our hospital.

Primary Outcome Measures :
  1. All cause mortality [ Time Frame: within the first 28 days after admission to our hosptial ]
    Patients died within the first three days of admission would be excluded from this study.

Secondary Outcome Measures :
  1. Postoperative complications [ Time Frame: within the first 28 days after admission to our hosptial ]
    wound complications; pulmonary infection; incisional hernia, and bleeding.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Clinical diagnosis of severe abdominal sepsis

Exclusion Criteria:

  • Age < 18 or > 60 years
  • Pregnancy
  • Leucopenia from radiochemical therapy due to malignant tumor
  • Any primary diagnosis other than sepsis
  • Confirmed immunodeficiency
  • Requirement for blood transfusion, plasmapheresis, or immediate surgery

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01568853

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China, Jiangsu
Department of Surgery, Jinling Hospital
Nanjing, Jiangsu, China, 210002
Sponsors and Collaborators
Jinling Hospital, China
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Principal Investigator: Jianan Ren, M.D. Department of Surgery, Jinling Hospital, China
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Jianan Ren, Clinical professor, Principal investigator, Jinling Hospital, China Identifier: NCT01568853    
Other Study ID Numbers: BK2010-017-1
First Posted: April 2, 2012    Key Record Dates
Last Update Posted: April 6, 2012
Last Verified: April 2012
Additional relevant MeSH terms:
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Intraabdominal Infections
Abdominal Abscess
Digestive System Fistula
Systemic Inflammatory Response Syndrome
Pathologic Processes
Pathological Conditions, Anatomical
Pancreatic Diseases
Digestive System Diseases
Gastrointestinal Diseases
Cecal Diseases
Intestinal Diseases
Adrenergic alpha-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Autonomic Agents