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WithdrawnNCT00977496Updated Mar 18, 2015

Development of a Probiotic Strategy to Prevent or Eliminate Nasal Colonization With S. Aureus

An observational study in Hemodialysis, sponsored by Tufts Medical Center. Withdrawn. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-03-18.

Sponsored by Tufts Medical Center · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
0
Ages
18 Years and older
Sex
All
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Study summary

The goal of this study is characterize the changes in bacterial diversity of the nares of hemodialysis patients. Another goal is to determine when hemodialysis patients become colonized with the bacteria Staphylococcus aureus, as nasal colonization with S. aureus is a major risk factor for invasive infection in hemodialysis patients. Fifteen subjects will be recruited into the study. Nasal swabs will be collected every month for six months or until one month after S. aureus colonization in order to determine any changes in the bacterial communities of the nose. Clinical data will also be collected to evaluate the possible influence of external factors on changes in the microbial communities in the patients' noses. This study will provide preliminary data on whether oral- and/or nasal-administered probiotics can eliminate nasal carriage of S. aureus.

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Conditions studied

  • Hemodialysis

Keywords

  • hemodialysis
  • microbiota
  • Staphylococcus aureus
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In context

Lead sponsor

Tufts Medical Center is the lead sponsor of 194 studies on the registry; 28 are open to participants now.

Of its 30 completed or terminated interventional studies of FDA-regulated products, 16 (53%) have results posted.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients from the Boston Dialysis Center Inc outpatient hemodialysis clinic of Tufts Medical Center.

Inclusion criteria

  • Male and female subjects aged 18 years or older
  • On a stable hemodialysis schedule three times a week at Tufts Medical Center outpatient hemodialysis unit
  • Able to speak English, Spanish, Cantonese, or Mandarin (One of these languages is spoken by >95% of our hemodialysis population)
  • Provides informed consent to participate in the study
  • No plans to be absent from the dialysis unit in the next 6 months
  • Willingness to report on adverse events during the study period

Exclusion criteria

Exclusion Criteria:

  • Patients in which hemodialysis was indicated for acute renal failure secondary to septic shock, acute tubular necrosis, or other condition which is felt to be temporary or secondary to a life threatening illness or likelihood of hemodialysis for less than 6 months.
  • Treatment with systemic anti-staphylococcal antibiotic therapy within 30 days prior to enrollment or planned use of topical mupirocin applied to the nares
  • Receiving peritoneal dialysis (concordance between the colonizing and infecting strain is not as high as in the hemodialysis population (105))
  • Absolute neutrophil count less than 500/mm3 or anticipated fall in neutrophil count \< 500/mm3 (e.g. as a result of recent chemotherapy)
  • Bleeding diathesis such as platelets count less than 20 or INR >4 within the last 30 days
  • On immunosuppressive therapy
  • Anticipated renal transplant during the next 6 months
  • Evidence of active bowel leak, acute abdomen or colitis
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
0 participants (actual)

Groups and cohorts

  • Nasal Swab

    New chronic hemodialysis patients with no evidence of nasal carriage of Staphylococcus aureus from Boston Dialysis Center Inc., the outpatient hemodialysis clinic of Tufts Medical Center

    Procedure: Nasal Swab

Interventions

  • ProcedureNasal Swab

    Swabs will be moistened in sterile 0.9% sodium chloride solution and rotated in the anterior vestibule of both nares and processed for S aureus cultures and for bacterial DNA extraction.

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What researchers measure

Primary outcomes

  1. To describe the clinical variables that may be associated with the acquisition of S aureus nasal colonization, over a six-month period.

    Time frame: Monthly for 6 months or monthly until 1 month after positive nasal swab for S aureus

  2. To refine and test the feasibility of using non culture-based methods to study the microbial ecology and bacterial diversity of the anterior nares in patients starting hemodialysis using 16sRNA sequence analysis.

    Time frame: Monthly for 6 months or monthly until 1 month after positive nasal swab for S aureus

  3. To explore changes in bacterial diversity in the anterior nares over a six-month period and in conjunction with S aureus colonization.

    Time frame: Monthly for 6 months or monthly until 1 month after positive nasal swab for S aureus

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Study locations

No study locations are listed for this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 18, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00977496
Lead sponsor
Tufts Medical Center
First posted
Sep 15, 2009
Start date
May 2011
Last update
Mar 18, 2015

Study contacts

Patricia L Hibberd, MD, PhD
principal investigator · Tufts Medical Center

Oversight

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

Not currently enrolling

This study is withdrawn, as verified in Mar 2015. You cannot join it, but the record below documents what was studied.

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