CClinicalTrials.gg
CompletedNCT00440869NACUpdated Mar 3, 2010

Effects of N-acetylcysteine on Muscle Fatigue in Hemodialysis

A Phase 1 interventional study of N-acetylcysteine and placebo in End-Stage Renal Disease, Dialysis and Hemodialysis, sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2010-03-03.

Sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purposes of the study are to determine whether oxidative stress causes the muscle of dialysis patients to tire more quickly than muscle of people without kidney disease and to determine whether treatment with N-acetylcysteine, an antioxidant, can improve muscle endurance.

Read the detailed description

Muscle dysfunction is a major problem for patients with end-stage renal disease (ESRD). Specifically, these patients experience approximately three-fold greater muscle fatigue of the lower extremities during intermittent submaximal contractions than healthy control subjects. Thus, a treatment that could ameliorate muscle fatigue in this population has the potential to increase endurance during activities of daily living and improve quality of life. Dialysis patients have been shown to have high levels of various markers of oxidative stress, and oxidative stress has been associated with excessive muscle fatigue in other patient populations, but this link has not been established in the ESRD population.

Comparisons: The amount of muscle fatigue during intermittent submaximal quadriceps exercise between dialysis patients and controls will be compared. In addition, the degree of exercise-induced increase in markers of oxidative stress in muscle and in plasma will be compared between dialysis patients and controls and between dialysis patients who have received N-acetylcysteine for 6 days and those who have received placebo capsules.

02

Conditions studied

  • End-Stage Renal Disease
  • Dialysis
  • Hemodialysis

Keywords

  • N-acetylcysteine
  • oxidative stress
  • muscle fatigue
  • end-stage renal disease
  • hemodialysis
03

In context

Kidney Diseases

3,840 studies on the registry are indexed under Kidney Diseases; 500 are open to participants now.

This study's planned enrollment of 30 is below the median of 70 across 2,640 interventional studies indexed under Kidney Diseases.

Browse Kidney Diseases studies →

Lead sponsor

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) is the lead sponsor of 529 studies on the registry; 54 are open to participants now.

Of its 79 completed or terminated interventional studies of FDA-regulated products, 50 (63%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • age greater than 18 years
  • undergoing hemodialysis for 3 months or more or healthy control without kidney disease

Exclusion criteria

Exclusion Criteria:

  • inability to give informed consent
  • diagnosis of diabetes mellitus
  • musculoskeletal contraindication to exercise
  • infection requiring intravenous antibiotics within 2 months
  • hospitalization within 2 months
  • ingestion of antioxidant supplements within one month
  • requirement for systemic anticoagulation
  • estimated GFR \<60 ml/min/1.73 m2 for healthy controls
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    N-acetylcysteine

    Active

    Dietary Supplement: N-acetylcysteine

  • Placebo comparator
    placebo

    placebo

    Dietary Supplement: placebo

Interventions

  • Dietary supplementN-acetylcysteine

    600 mg po bid

  • Dietary supplementplacebo

    bid oral dosing

06

What researchers measure

Primary outcomes

  1. change in quadriceps muscle endurance during intermittent submaximal contractions

    Time frame: 6 days

  2. change in exercise-induced markers of oxidative stress

    Time frame: 8 days

07

Study locations

1 site
  • San Francisco VA Medical Center
    San Francisco, California 94121, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 3, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00440869
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
First posted
Feb 27, 2007
Start date
Mar 2007
Primary completion
Dec 2009
Completion
Dec 2009
Last update
Mar 3, 2010

Study contacts

Kirsten L Johansen, MD
principal investigator · University of California, San Francisco, San Francisco VA Medical Center

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2010. You cannot join it, but the record below documents what was studied.

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