ClinicalTrials.gg
CompletedNCT01329965Updated Aug 21, 2023

Safety and Feasibility of an Endotoxemia Model

A Phase 1 interventional study of LPS (reference endotoxin, E. coli O113:H10:K:neg, manufactured under GMP) in Cardiovascular Disease and Inflammation, sponsored by Penn State University. Completed at 1 site in United States. Open to participants aged 20 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-08-21.

Sponsored by Penn State University · Phase 1, Interventional, and Other

Phase
Phase 1
Study type
Interventional
Enrollment
6
Allocation
Randomized
Ages
20 Years to 35 Years
Sex
All
01

Study summary

The purpose of this study is to establish the safety and feasibility of low dose LPS administration to a small subset of humans in preparation for a larger USDA funded study examining what is the lowest effective dose of EPA + DHA (300, 600, 900 and 1,800 mg/day delivered as fish oil supplements) that significantly attenuates the inflammatory response the investigators wish to examine the effects of an endotoxemia model for inducing inflammation. Based on previous research, low dose LPS administration affects metabolism in humans with only minimal clinical effects (such as "flu" like illness). Therefore, each of the six subjects included in this small pilot study will receive a low dose of LPS and placebo in order to learn more about the metabolic changes that occur during administration and inflammation. The investigators hypothesis that LPS administration will elicit only minimal clinical effects (such as "flu" like illness) when compared to placebo (saline--water with the same amount of salt as in your blood).

02

Conditions studied

  • Cardiovascular Disease
  • Inflammation

Keywords

  • Cardiovascular disease
  • Inflammation
  • LPS
  • Endotoxin
03

In context

Cardiovascular Diseases

5,368 studies on the registry are indexed under Cardiovascular Diseases; 939 are open to participants now.

This study's enrollment of 6 is below the median of 100 across 3,084 interventional studies indexed under Cardiovascular Diseases.

Browse Cardiovascular Diseases studies →

Lead sponsor

Penn State University is the lead sponsor of 270 studies on the registry; 53 are open to participants now.

Of its 15 completed or terminated interventional studies of FDA-regulated products, 11 (73%) have results posted.

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

04

Who can participate

Ages eligible
20 Years to 35 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Healthy men and non-pregnant/lactating women between the ages of 20 and 35 years old
  • > 19.9 and \< 30.0
  • Able to give written and willing to comply with all study- related procedures

Exclusion criteria

Exclusion Criteria:

  • Previous history of heart disease or diabetes
  • Renal Insufficiency
  • Chronic anti-inflammatory use
  • Systolic blood pressure \< 90
  • Individuals currently using tobacco products or have done so in the previous 30 days
  • Individuals taking Omega-3 fatty acid supplements or their usual intake of fish is greater than 3-4 servings per month
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

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You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    LPS

    LPS will be injected at a dose of 0.6 ng/kg body weight through a catheter by a trained GCRC staff member involved with this study.

    Drug: LPS (reference endotoxin, E. coli O113:H10:K:neg, manufactured under GMP)

  • Placebo comparator
    Saline

    A saline solution will be injected through a catheter by a trained GCRC staff member involved with this study.

    Drug: LPS (reference endotoxin, E. coli O113:H10:K:neg, manufactured under GMP)

Interventions

  • LPS or placebo (saline-salt water) will be injected (at approximately 7:30 am) in this catheter by a trained GCRC staff member involved with this study. Participants will not be told if they have received the drug or placebo. The LPS is a sterile solution of protein-free endotoxin which will be injected at a dose of 0.6 ng/kg body weight. Blood samples will be collected from a venous catheter for the first 12 hours and by venipuncture thereafter. Subjects will be continuously monitored by trained nursing staff for blood pressure (q 15 minutes) and body temperature (q 30 minutes), and the study will have physician oversight.

06

What researchers measure

Primary outcomes

  1. Change in Inflammatory Markers

    Time frame: Baseline (before LPS administration), 1, 2, 3, 4, 6, 12, 24 hrs post LPS administration; 2, 3 and 5 days post LPS administration

Secondary outcomes

  1. Change in Lipid Mediators

    Time frame: 1, 2, 3 and 5 days post LPS administration

07

Study locations

1 site
  • Penn State University
    University Park, Pennsylvania 16802, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 21, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01329965
Collaborators
United States Department of Agriculture (USDA)
Responsible party
Sponsor
First posted
Apr 6, 2011
Start date
Apr 2011
Primary completion
Aug 2011
Completion
Sep 2011
Last update
Aug 21, 2023

Study contacts

Penny M Kris-Etherton, PhD, RD
principal investigator · Penn State University

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2023. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Lipopolysaccharides

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