Environmental Exposure to Lead and Its Health Effects on Patients With Maintenance Hemodialysis

April 5, 2010 updated by: Chang Gung Memorial Hospital
One thousand patients with LHD who have no history of exposure to lead will be observed for 18 months. Blood lead level(BLL), biochemical data, hemoglobin, albumin, Cr, high sensitivity C-reactive protein (HsCRP), and blood cell counts are assessed at baseline. The morbidity and mortality are recorded in detail. Then, one hundred subjects with high BLL (>20μg/dl) will be randomly assigned to the study and control groups. For 3-6 months, the 50 patients in the study group will receive lead-chelation therapy with calcium disodium EDTA weekly until the BLB falls below BLL< 5 μg/dl, and the 50 control group patients receive weekly placebo for 12 weeks. During the ensuing 18 months, the BLL, biochemical data will be regularly followed up every 3 months. BLL is measured every 6 months. If BLL of the study group patients increase >10 μg/dl, the chelation therapy will be performed again until their BLL is <5 μg/dl. The primary end point is morbidity or mortality during the observation and follow-up period. A secondary end point is the change in hemoglobin, albumin, Cr and Hs CRP during the follow up period.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

100

Phase

  • Not Applicable

Contacts and Locations

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

Study Contact

Study Locations

  • Taiwan
      • Taoyuan, Taiwan, 33333
        • Recruiting
        • Chang Gung Memorial Hospital
        • Contact:
        • Principal Investigator:
          • Ja-Liang Lin, MD

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 to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • MHD patients have dialyzed for more than 6 months and age >18 and < 90 year-old

Exclusion Criteria:

  • Patients with malignancies and obvious infectious diseases as well as those who are hospitalized or underwent surgery or renal transplantation within the 3 months preceding the investigation;Patients with a history of occupational exposure to heavy metals, metal intoxication, living in metal-contaminated areas were also excluded.

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The primary end point is morbidity or mortality during the follow-up period.
Time Frame: 18 months follow-up period
18 months follow-up period

Secondary Outcome Measures

Outcome Measure
Time Frame
A secondary end point is the change in HB, albumin, Cr and Hs CRP during the follow up period.
Time Frame: 18 months follow-up period
18 months follow-up period

Collaborators and Investigators

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

Sponsor

Chang Gung Memorial Hospital

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

April 1, 2010

Primary Completion (Anticipated)

October 1, 2011

Study Completion (Anticipated)

December 1, 2011

Study Registration Dates

First Submitted

June 21, 2009

First Submitted That Met QC Criteria

June 22, 2009

First Posted (Estimate)

June 23, 2009

Study Record Updates

Last Update Posted (Estimate)

April 7, 2010

Last Update Submitted That Met QC Criteria

April 5, 2010

Last Verified

April 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 96-1455C

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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