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Glutathione and Its Precursors in HIV-Infected Patients

HIV Infection Clinical Trial

Official title:
The Effect of Substrate Supply on Modulating Plasma GSH Levels in Treated HIV+ Patients

Clinical Trial Summary

The aim of this study is to investigate the responses of the serum amyloid A (SAA) pathway to dietary supplements of glutamine (Gln) and cysteine (Cys) together with methionine (Met)-overloading in HIV+ patients comparatively to healthy controls.

Clinical Trial Description

Introduction: Among the 4 sulphur-containing amino acids (SAA), only Met and Cys are incorporated into proteins, but Hcy and Tau are related to oxidative stress and glutathione (GSH), the major intracellular hydro-soluble anti-oxidant agent. HIV+ patients present low levels of antioxidant nutrients, including GSH and its precursors.

Objective: To investigate the responses of the SAA pathway to dietary supplements of Gln and Cys together with Met-overloading in HIV+ patients comparatively to healthy controls.

Methods: Twelve HIV+ (6 males and 6 females, 25-36 yrs old) patients under HAART (one HIV protease inhibitor in combination with two nucleoside analogs) for at least one year and 20 (10M and 10F, 23-28 yrs old) healthy controls were randomly assigned to 7-day diets containing either NAC (N-acetylcysteine, 1g/d) or Gln (20g/d), with a 7-day washout period with their usual diet (UD). Blood samples were drawn after overnight fast before and after (2h and 4h) ingesting the Met (100 mg/kg) overload (Met-OL) with determination of the area under the curve (AUC). HPLC plasma analysis of SAA (Met, Hcy, Cys and Tau), GSH and GSSG and Ser, Gly, Glu and Gln was carried out at moments before (MO) and after 7-day diets (M1). Additionally, at baseline, both groups were assessed for anthropometry (BMI, kg/m2; body fat %) and plasma biochemistry (creatinine, urea, γ-glutamyl transpeptidase, glucose, triglycerides, cholesterol, uric acid, albumin, folic acid and vitamin B12).The HIV+ group (G2) was also characterized by the viral load, CD4+ and CD8+ lymphocytes counts. Statistical comparisons were undertaken among diets between groups with p = 0.05. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00910442
Study type Interventional
Source UPECLIN HC FM Botucatu Unesp
Contact
Status Completed
Phase Phase 2
Start date February 2002
Completion date February 2009
View Details
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