Stem Cells Found in the Abdominal Cavity in Humans

Peritoneal Cavity Derived Stem Cells: A Pilot Study

The purpose of this research study is to determine the genotype (genetic composition) and phenotype (physical appearance) of cells derived from the abdominal cavity to determine whether stem cells are present.

Study Overview

• Status: Unknown
• Conditions: Intra-abdominal Surgery

Detailed Description

The purpose of this study is to determine the presence and characterization of stem cells in human peritoneal cavity. Peritoneal lavage fluid from patients who undergo elective open abdomen will be collected for this purpose. Peritoneal lavage is normally a routine part of abdominal surgical procedure and usually is discarded after surgery. The patient will undergo surgical procedure as usual and there will be no added procedures during surgery.

This study will collect and analyze peritoneal fluid for the existence and characteristics of stem cells from 15 patients undergoing scheduled elective intra-abdominal surgery by designated surgeons at Cedars-Sinai Medical Center. The types of abdominal surgery could be open abdominal surgery or laparoscopic surgery. Peritoneal washing is routinely done in abdominal surgeries. We will collect these fluids to analyze whether stem cells exist in human peritoneal cavity. The fluids will be collected in a sterile fashion. The collected fluid will be further processed in the laboratory for the purpose of the study.

Medical record review will be conducted. Information collected will include age, gender, past and current medical history, current indication for intra-abdominal surgery, substance exposure history, medication history which will be obtained from review of patients' medical records. The information will be maintained using coded entry and there will be no link between patient identifiers to the study codes.

• Study Type: Observational
• Enrollment (Anticipated): 50

Contacts and Locations

Study Locations

• United States
  • California
    • Los Angeles, California, United States, 90048
      • Recruiting
      • Cedars-Sinai Medical Center
      • Contact: Colleen Sam, DO; Email: samc@cshs.org
      • Principal Investigator: Prediman K Shah, MD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

subjects undergoing scheduled elective intra-abdominal surgery

Description

Inclusion Criteria:

1. 20-60 years old
2. Male or females who are scheduled to undergo elective abdomen surgery

Exclusion Criteria:

1. Minors
2. Pregnant women
3. Known personal or family history of genetic disorders
4. Known history of malignancy
5. Known history of advanced liver or renal disease
6. HIV Positive: only patients who have tested negative during routine testing of their donated blood prior to surgery will be included in the study.
7. Hepatitis B and C positive
8. Scheduled to undergo lap banding

Study Plan

How is the study designed?

Collaborators and Investigators

• Sponsor: Cedars-Sinai Medical Center
• Investigators: Principal Investigator: Prediman K Shah, MD, Cedars-Sinai Medical Center

Study record dates

Study Major Dates

• Study Start: April 1, 2007
• Study Completion (Anticipated): February 1, 2012

Study Registration Dates

• First Submitted: December 18, 2007
• First Submitted That Met QC Criteria: December 18, 2007
• First Posted (Estimate): December 19, 2007

Study Record Updates

• Last Update Posted (Estimate): June 27, 2011
• Last Update Submitted That Met QC Criteria: June 24, 2011
• Last Verified: December 1, 2007

More Information

Terms related to this study

• Keywords: abdominal laparoscopic surgery; open abdominal surgery; peritoneal stem cells; patients scheduled for any type of elective intra-abdominal surgery at Cedars-Sinai Medical Center with designated surgeons
• Other Study ID Numbers: 11388