Cytokines Polymorphisms and Acetaminophen Toxicity

This study has been completed.
Sponsor:
Collaborator:
Information provided by:
Arkansas Children's Hospital Research Institute
ClinicalTrials.gov Identifier:
NCT00166608
First received: September 9, 2005
Last updated: April 10, 2012
Last verified: April 2012
  Purpose

Genotyping assays for polymorphisms in the interleukin 10(IL10)gene and the inducible nitric oxide synthase (iNOS) gene will be performed. Genotypes will be compared to the severity of toxicity following overdose.


Condition Intervention
Drug Toxicity
Procedure: Blood sampling

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Measurement of Nitrotyrosine Adducts and Cytokines in Acetaminophen Overdose Patients

Resource links provided by NLM:


Further study details as provided by Arkansas Children's Hospital Research Institute:

Primary Outcome Measures:
  • To investigate the relationships of cytokines and toxicity in acetaminophen overdose, blood sampleswere collected from patients following acute ingestions of acetaminophen.

Enrollment: 111
Study Start Date: December 2002
Study Completion Date: September 2007
Primary Completion Date: May 2007 (Final data collection date for primary outcome measure)
Detailed Description:

It was recently reported that IL-10 is protective in Acetaminophen (APAP) toxicity and it down-regulates iNOS production. In an ongoing Pediatric Pharmacology Research Unit (PPRU) Network study, plasma IL-10 levels were higher in patients that developed significant toxicity, as compared to those with minimal hepatic transaminase elevations. In these patients IL-10 elevation is likely a compensatory response to hepatic injury. To further examine the relationship of IL-10 and iNOS in the APAP overdose patients, we will examine genetic variability in the promotor regions of iNOS and IL-10 in patients with APAP overdose. Data from the literature indicate the polymorphisms in the promotor regions of iNOS and IL-10 influence the severity and expression of various diseases. In addition to genotyping for iNOS and IL10 promotor region polymorphisms, plasma levels of nitrotyrosine and IL-10 will be measured in overdose patients.

Blood samples will be obtained from study patients for the analysis of inflammatory cytokines and nitrotyrosine. Blood samples will be obtained at the time of blood sampling for the routine clinical management of the APAP overdose patient. Patients who are hospitalized will have study blood samples drawn at the time daily blood samples are obtained. The sampling will continue daily until the patient is discharged. In addition to blood sampling the following data will be collected: age, gender, race, circumstances of the ingestion, dose of the ingestion, treatment for the ingestion, concomitant therapy, medical history and cigarette use.

  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

Publication Attached

Criteria

Inclusion Criteria:

  • Males and females of any age admitted to a participating site for acetaminophen overdose (acute or chronic).

Exclusion Criteria:

  • Patients who are unable to tolerate study procedures.
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00166608

Locations
United States, Arkansas
Arkansas Children's Hospital
Little Rock, Arkansas, United States, 72202
United States, Kentucky
Kosair Children's Hospital
Louisville, Kentucky, United States, 40202
United States, Michigan
Children's Hospital of Michigan
Detroit, Michigan, United States, 48201
United States, Missouri
Children's Mercy Hospital
Kansas City, Missouri, United States, 64108
United States, North Carolina
University of North Carolina--Chapel Hill
Chapel Hill, North Carolina, United States, 27599
United States, Ohio
Rainbow Babies & Children's Hospital
Cleveland, Ohio, United States, 44106
United States, Texas
Texas Children's Hospital
Houston, Texas, United States, 77030
Sponsors and Collaborators
Arkansas Children's Hospital Research Institute
Investigators
Principal Investigator: Laura James, M.D. Arkansas Children's Hospital Research Institute
  More Information

Additional Information:
Publications:
Responsible Party: Laura James, M.D., Arkansas Children's Hospital Research Institute
ClinicalTrials.gov Identifier: NCT00166608     History of Changes
Obsolete Identifiers: NCT00147407
Other Study ID Numbers: PPRU-10369s
Study First Received: September 9, 2005
Last Updated: April 10, 2012
Health Authority: United States: Federal Government

Keywords provided by Arkansas Children's Hospital Research Institute:
acetaminophen toxicity
liver damage
tylenol overdose

Additional relevant MeSH terms:
Acetaminophen
Analgesics
Analgesics, Non-Narcotic
Antipyretics
Central Nervous System Agents
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Sensory System Agents
Therapeutic Uses

ClinicalTrials.gov processed this record on October 21, 2014