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Blood Levels of Abacavir in HIV Infected Adolescents

2014-08-27 03:54:12 | BioPortfolio

Summary

The way abacavir (ABC) behaves in the body differs between children and adults, but little is known about ABC in adolescents. It is unclear if adult doses of ABC are appropriate for adolescents. The purpose of this study is to determine the blood levels of ABC in HIV infected adolescents who are on ABC-containing regimens.

Description

ABC is approved for the treatment of HIV in adults and children, but it is unclear if currently recommended ABC doses are appropriate for adolescents. Previous data suggest ABC clearance in children is about twice that found in adults, but limited data exist on the pharmacokinetics of ABC in adolescents. This study will evaluate the 8-hour pharmacokinetics of ABC in HIV infected adolescents who are currently on ABC-containing treatment regimens.

There will be two groups in this study. Group 1 participants will be 13 to 17 years old. Group 2 participants will be 18 to 25 years old. All participants will receive a 300 mg dose of ABC as either a single-agent tablet or a combination tablet of ABC, lamivudine, and zidovudine (whichever they are currently taking). Participants will have a medical history assessment and a physical exam at screening and study entry. Participants will also be asked about adherence to their ABC-containing regimen at study entry. During the 8-hour drug level study, blood collection for pharmacokinetic analysis will occur prior to taking ABC, and at 0.5, 1, 2, 3, 4, 6, and 8 hours after taking ABC.

Study Design

Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Pharmacokinetics Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

HIV Infections

Intervention

Abacavir sulfate, Abacavir sulfate, lamivudine, and zidovudine

Location

Los Angeles County Medical Center/USC
Los Angeles
California
United States
90033

Status

Completed

Source

National Institute of Allergy and Infectious Diseases (NIAID)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:54:12-0400

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Medical and Biotech [MESH] Definitions

Derivatives of chondroitin which have a sulfate moiety esterified to the galactosamine moiety of chondroitin. Chondroitin sulfate A, or chondroitin 4-sulfate, and chondroitin sulfate C, or chondroitin 6-sulfate, have the sulfate esterified in the 4- and 6-positions, respectively. Chondroitin sulfate B (beta heparin; DERMATAN SULFATE) is a misnomer and this compound is not a true chondroitin sulfate.

An enzyme that catalyzes the activation of sulfate ions by ATP to form adenosine-5'-phosphosulfate and pyrophosphate. This reaction constitutes the first enzymatic step in sulfate utilization following the uptake of sulfate. EC 2.7.7.4.

An arylsulfatase that catalyzes the hydrolysis of the 4-sulfate groups of the N-acetyl-D-galactosamine 4-sulfate units of chondroitin sulfate and dermatan sulfate. A deficiency of this enzyme is responsible for the inherited lysosomal disease, Maroteaux-Lamy syndrome (MUCOPOLYSACCHARIDOSIS VI). EC 3.1.6.12.

An enzyme that specifically cleaves the ester sulfate of iduronic acid. Its deficiency has been demonstrated in Hunter's syndrome, which is characterized by an excess of dermatan sulfate and heparan sulfate. EC 3.1.6.13.

Enzymes which catalyze the elimination of glucuronate residues from chondroitin A,B, and C or which catalyze the hydrolysis of sulfate groups of the 2-acetamido-2-deoxy-D-galactose 6-sulfate units of chondroitin sulfate. EC 4.2.2.-.

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