Ultra Structure Of Peritoneum At Electronic Microscopy In Control Subjects And Patients With Gastric Cancer

July 8, 2009 updated by: University of Chile

Ultra Structure of Peritoneum at Electronic Microscopy in Control Subjects and Patients With Gastric Cancer

Peritoneal metastases appear in a great proportion of patients affected by gastric carcinoma. Involved mechanisms are poorly understood though experimentally it has been demonstrated that neoplastic cells exfoliated from primary tumor can only implant and proliferate in areas of damaged peritoneum. Objectives: to study ultra-structure of peritoneal surface by electronic microscopy in control subjects and in patients with early or locally advanced gastric cancer looking for spontaneous changes in peritoneal surface not related with surgical injury.

Study Overview

Status

Completed

Conditions

Detailed Description

18 out of 32 cases were eligible for analysis. Four patients operated on for benign diseases served as control and 14 patients with operable local gastric adenocarcinoma (4 mucosa/submucosa/muscular y 10 serosa lesions) were studied. At the beginning of surgery, a 2 x 2 cm. sample from macroscopically normal visceral peritoneum at mesenterium root was carefully obtained, washed with saline and fixed in glutaraldehyde solution. Besides a sample of peritoneal washing fluid was studied to exclude patients with free cancer cells. Peritoneal tissue was fixed during 24 hours and then all samples were evaluated by electronic microscope.

Study Type

Observational

Enrollment (Actual)

18

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Chile
    • Region Metropolitana
      • Santiago, Region Metropolitana, Chile
        • Department of Surgery, Clinical Hospital, University of Chile

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

patients with operable local gastric adenocarcinoma consulting to Hospital Clinico, University of Chile during study period.

Description

Inclusion Criteria:

  • patients with operable local gastric adenocarcinoma

Exclusion Criteria:

  • previous abdominal surgery
  • previous open or blunt abdominal trauma
  • history of inflammatory bowel disease or Typhoid Fever, Gallstone disease, chemotherapy or radiotherapy, or any other abdominal condition that could alter peritoneal integrity.
  • All other gastric malignancies such as lymphomas, GIST, carcinoids

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Gastric cancer
patients with operable local gastric adenocarcinoma were studied
Control group
patients operated on for benign diseases served as controls, randomly selected among patients with chronic gastro-esophageal reflux disease who were considered good candidates for antireflux surgery and properly matched in sex and age to study group

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Chile

Investigators

  • Principal Investigator: Patricio Burdiles, MD, Department of Surgery, Clinical Hospital, University of Chile

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2002

Primary Completion (Actual)

July 1, 2004

Study Completion (Actual)

December 1, 2004

Study Registration Dates

First Submitted

July 7, 2009

First Submitted That Met QC Criteria

July 8, 2009

First Posted (Estimate)

July 9, 2009

Study Record Updates

Last Update Posted (Estimate)

July 9, 2009

Last Update Submitted That Met QC Criteria

July 8, 2009

Last Verified

July 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • OAIC 043/02

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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