Paracetamol and Glutathion

May 4, 2010 updated by: University Hospital, Clermont-Ferrand

Effect of Paracetamol on the Status in Glutathione for the Aged Person

Paracetamol is one of the most widely used analgesics in the world especially for chronic pain in the elderly. The metabolism of paracetamol occurs in the liver and involves the use of glutamyl-cysteinyl-glycine (Glutathione (GSH)). Medications such as paracetamol, may reduce the reserves of GSH because it is used for detoxification and elimination. It is well known that the concentration of GSH decrease after administration of paracetamol in humans and animals.

Aging is associated with decreased concentration of GSH in cells and tissues. In the elderly, a decrease of GSH concentration in plasma or red blood cells is associated with decreased physical and mental health.

We wish here to determine, in subjects aged over 70 years, the blood concentration of glutathione (GSH) and urinary loss of cysteine in the detoxification of paracetamol, when taking paracetamol treatment repeated.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Paracetamol is one of the most widely used analgesics in the world especially for chronic pain in the elderly. The metabolism of paracetamol occurs in the liver and involves the use of glutamyl-cysteinyl-glycine (glutathione (GSH)). Medications such as paracetamol, may reduce the reserves of GSH because it is used for detoxification and elimination. It is well known that the concentration of GSH decrease after administration of paracetamol in humans and animals.

Aging is associated with decreased concentration of GSH in cells and tissues. In the elderly, a decrease of GSH concentration in plasma or red blood cells is associated with decreased physical and mental health.

We wish here to determine, in subjects aged over 70 years, the blood concentration of glutathione (GSH) and urinary loss of cysteine in the detoxification of paracetamol, when taking paracetamol treatment repeated.

Study Type

Interventional

Enrollment (Actual)

18

Phase

  • Phase 1

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

  • France
      • Clermont-Ferrand, France, 63003
        • Chu Clermont-Ferrand

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

66 years and older (Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Elderly patients over 70 years and treated for over two weeks by oral paracetamol, 3 grams per day (Doliprane ® 1000 mg) as part of their usual care.
  • Male and female.

Exclusion Criteria:

  • Subject to compliance with the prescribed drug therapy is questionable.
  • Subject taking the N-acetyl-cysteine.
  • Renal or hepatic disease.

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: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Identify, by determining the concentration of blood GSH how the use of paracetamol at the doses usually prescribed affects the status of GSH

Secondary Outcome Measures

Outcome Measure
Quantifying the loss of cysteine for detoxification of acetaminophen by measuring the amount of paracetamol cysteine conjugate and mercapturic acid excreted in urine

Collaborators and Investigators

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

Sponsor

University Hospital, Clermont-Ferrand

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

February 1, 2007

Primary Completion (Actual)

February 1, 2008

Study Completion (Actual)

May 1, 2008

Study Registration Dates

First Submitted

May 4, 2010

First Submitted That Met QC Criteria

May 4, 2010

First Posted (Estimate)

May 5, 2010

Study Record Updates

Last Update Posted (Estimate)

May 5, 2010

Last Update Submitted That Met QC Criteria

May 4, 2010

Last Verified

May 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CHU-0072
  • 2006-006564-36 (EudraCT Number)

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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