Hyperoxia Induced Pulmonary Inflammation and Organ Injury: a Human in Vivo Model
Primary Purpose
Oxygen Toxicity, Pulmonary Injury, Acute Lung Injury
Status
Not yet recruiting
Phase
Not Applicable
Locations
United Kingdom
Study Type
Interventional
Intervention
Liquid oxygen
medical air
Sponsored by
About this trial
This is an interventional basic science trial for Oxygen Toxicity
Eligibility Criteria
Inclusion Criteria:
1. Healthy non-smoking subjects less than 45 years of age and BMI < 29 kg/m²
Exclusion Criteria:
- Age < 18 years
- On concomitant medications including over the counter medications excluding oral contraception and paracetamol
- Previous adverse reactions to LPS, lignocaine or sedative agents
- Pregnant or Breast-Feeding
- Participation in a clinical trial of an investigational medicinal product within 30 days
- Consent declined
- History of asthma or other respiratory conditions
- Smoking/ e cigarette use
- Marijuana use or other inhaled products with or without nicotine in the last 3 months
- Alcohol abuse, as defined by the Alcohol Use Disorders Identification Test (AUDIT)
- Subjects with history of prior conventional cigarette (> 100 cigarettes lifetime and smoking within 6 months) or electronic cigarette use.
Sites / Locations
- Belfast Health and Social Care Trus
Arms of the Study
Arm 1
Arm 2
Arm Type
Active Comparator
Placebo Comparator
Arm Label
Liquid medical oxygen
Synthetic medical air
Arm Description
Liquid medical oxygen will be administered using high-flow nasal cannula delivery system.
Synthetic medical air will be administered using high-flow nasal cannula delivery system.
Outcomes
Primary Outcome Measures
Bronchoalveolar lavage Interleukin-8 concentration
To determine the effects of hyperoxia on alveolar inflammatory response
Secondary Outcome Measures
Bronchoalveolar lavage cytokines including but not limited to tumour necrosis factor alpha, IL-1 beta and IL-6
To determine the effects of hyperoxia on alveolar inflammatory response biomarkers
Bronchoalveolar lavage proteases and anti-proteases including but not limited to Matrix Metalloproteinases (MMP-2, MMP-8, MMP-9 and MMP-11), Tissue Inhibitors of Metalloproteinase (TIMPs 1-2) and neutrophil elastase
To determine the effects of hyperoxia on alveolar protease and antiprotease activity
Bronchoalveolar lavage white cell differential counts (total cell count, neutrophils, macrophages and lymphocytes)
To determine the effects of hyperoxia on alveolar cell populations
Plasma cytokines including but not limited to IL-8, tumour necrosis factor alpha, IL-1 beta and IL-6
To determine the effects of hyperoxia on plasma inflammatory response biomarkers
Bronchoalveolar lavage soluble programmed cell death receptor (SP-D)
To determine the effects of hyperoxia on alveolar epithelial and endothelial function
Bronchoalveolar lavage total protein
To determine the effects of hyperoxia on alveolar epithelial and endothelial function
Bronchoalveolar lavage receptor for advanced glycation end-products (RAGE)
To determine the effects of hyperoxia on alveolar epithelial and endothelial function
Bronchoalveolar lavage 4-hydroxy-2-nonenal (4-HNE)
To determine the effects of hyperoxia on oxidative stress
Bronchoalveolar lavage oxidised low density lipoprotein (oxLDL)
To determine the effects of hyperoxia on oxidative stress
Plasma advanced glycation end products (AGE)
To determine the effects of hyperoxia on oxidative stress
Plasma oxidised low density lipoprotein (oxLDL)
To determine the effects of hyperoxia on oxidative stress
Plasma 4-hydroxy-2-nonenal (4-HNE)
To determine the effects of hyperoxia on oxidative stress
Full Information
NCT ID
NCT05414370
First Posted
May 11, 2022
Last Updated
July 22, 2022
Sponsor
Belfast Health and Social Care Trust
1. Study Identification
Unique Protocol Identification Number
NCT05414370
Brief Title
Hyperoxia Induced Pulmonary Inflammation and Organ Injury: a Human in Vivo Model
Official Title
Effects of Hyperoxia Induced Pulmonary Inflammation and Organ Injury in a Human in Vivo Model
Study Type
Interventional
2. Study Status
Record Verification Date
July 2022
Overall Recruitment Status
Not yet recruiting
Study Start Date
August 2022 (Anticipated)
Primary Completion Date
June 2023 (Anticipated)
Study Completion Date
December 2023 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Belfast Health and Social Care Trust
4. Oversight
Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes
5. Study Description
Brief Summary
Oxygen is the most commonly administered therapy in critical illness. Accumulating evidence suggests that patients often achieve supra-physiological levels of oxygenation in the critical care environment. Furthermore, hyperoxia related complications following cardiac arrest, myocardial infarction and stroke have also been reported. The underlying mechanisms of hyperoxia mediated injury remain poorly understood and there are currently no human in vivo studies exploring the relationship between hyperoxia and direct pulmonary injury and inflammation as well as distant organ injury.
The current trial is a mechanistic study designed to evaluate the effects of prolonged administration of high-flow oxygen (hyperoxia) on pulmonary and systemic inflammation. The study is a randomised, double-blind, placebo-controlled trial of high-flow nasal oxygen therapy versus matching placebo (synthetic medical air). We will also incorporate a model of acute lung injury induced by inhaled endotoxin (LPS) in healthy human volunteers. Healthy volunteers will undergo bronchoalveolar lavage (BAL) at 6 hours post-intervention to enable measurement of pulmonary and systemic markers of inflammation, oxidative stress and cellular injury.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Oxygen Toxicity, Pulmonary Injury, Acute Lung Injury
7. Study Design
Primary Purpose
Basic Science
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
53 (Anticipated)
8. Arms, Groups, and Interventions
Arm Title
Liquid medical oxygen
Arm Type
Active Comparator
Arm Description
Liquid medical oxygen will be administered using high-flow nasal cannula delivery system.
Arm Title
Synthetic medical air
Arm Type
Placebo Comparator
Arm Description
Synthetic medical air will be administered using high-flow nasal cannula delivery system.
Intervention Type
Drug
Intervention Name(s)
Liquid oxygen
Other Intervention Name(s)
Liquid medical oxygen
Intervention Description
Liquid medical oxygen will be administered for 6 hours using high-flow nasal cannula delivery system with an Fi02 of 100% and flow rate of 60 litres per minute.
Intervention Type
Drug
Intervention Name(s)
medical air
Other Intervention Name(s)
Synthetic medical air
Intervention Description
Synthetic medical air will be administered for 6 hours using high-flow nasal cannula delivery system with a flow rate of 60 litres per minute.
Primary Outcome Measure Information:
Title
Bronchoalveolar lavage Interleukin-8 concentration
Description
To determine the effects of hyperoxia on alveolar inflammatory response
Time Frame
6 hours post-intervention
Secondary Outcome Measure Information:
Title
Bronchoalveolar lavage cytokines including but not limited to tumour necrosis factor alpha, IL-1 beta and IL-6
Description
To determine the effects of hyperoxia on alveolar inflammatory response biomarkers
Time Frame
6 hours post-intervention
Title
Bronchoalveolar lavage proteases and anti-proteases including but not limited to Matrix Metalloproteinases (MMP-2, MMP-8, MMP-9 and MMP-11), Tissue Inhibitors of Metalloproteinase (TIMPs 1-2) and neutrophil elastase
Description
To determine the effects of hyperoxia on alveolar protease and antiprotease activity
Time Frame
6 hours post-intervention
Title
Bronchoalveolar lavage white cell differential counts (total cell count, neutrophils, macrophages and lymphocytes)
Description
To determine the effects of hyperoxia on alveolar cell populations
Time Frame
6 hours post-intervention
Title
Plasma cytokines including but not limited to IL-8, tumour necrosis factor alpha, IL-1 beta and IL-6
Description
To determine the effects of hyperoxia on plasma inflammatory response biomarkers
Time Frame
6 and 24 hours post-intervention
Title
Bronchoalveolar lavage soluble programmed cell death receptor (SP-D)
Description
To determine the effects of hyperoxia on alveolar epithelial and endothelial function
Time Frame
6 hours post-intervention
Title
Bronchoalveolar lavage total protein
Description
To determine the effects of hyperoxia on alveolar epithelial and endothelial function
Time Frame
6 hours post-intervention
Title
Bronchoalveolar lavage receptor for advanced glycation end-products (RAGE)
Description
To determine the effects of hyperoxia on alveolar epithelial and endothelial function
Time Frame
6 hours post-intervention
Title
Bronchoalveolar lavage 4-hydroxy-2-nonenal (4-HNE)
Description
To determine the effects of hyperoxia on oxidative stress
Time Frame
6 hours post-intervention
Title
Bronchoalveolar lavage oxidised low density lipoprotein (oxLDL)
Description
To determine the effects of hyperoxia on oxidative stress
Time Frame
6 hours post-intervention
Title
Plasma advanced glycation end products (AGE)
Description
To determine the effects of hyperoxia on oxidative stress
Time Frame
6 and 24 hours post-intervention
Title
Plasma oxidised low density lipoprotein (oxLDL)
Description
To determine the effects of hyperoxia on oxidative stress
Time Frame
6 and 24 hours post-intervention
Title
Plasma 4-hydroxy-2-nonenal (4-HNE)
Description
To determine the effects of hyperoxia on oxidative stress
Time Frame
6 and 24 hours post-intervention
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
45 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria:
1. Healthy non-smoking subjects less than 45 years of age and BMI < 29 kg/m²
Exclusion Criteria:
Age < 18 years
On concomitant medications including over the counter medications excluding oral contraception and paracetamol
Previous adverse reactions to LPS, lignocaine or sedative agents
Pregnant or Breast-Feeding
Participation in a clinical trial of an investigational medicinal product within 30 days
Consent declined
History of asthma or other respiratory conditions
Smoking/ e cigarette use
Marijuana use or other inhaled products with or without nicotine in the last 3 months
Alcohol abuse, as defined by the Alcohol Use Disorders Identification Test (AUDIT)
Subjects with history of prior conventional cigarette (> 100 cigarettes lifetime and smoking within 6 months) or electronic cigarette use.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Danny McAuley, MD
Phone
+442890 972144
Email
d.f.mcauley@qub.ac.uk
First Name & Middle Initial & Last Name or Official Title & Degree
Dermot Linden, PhD
Phone
07812008626
Email
dlinden02@qub.ac.uk
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Danny McAuley, MD
Organizational Affiliation
Queen's University, Belfast
Official's Role
Principal Investigator
Facility Information:
Facility Name
Belfast Health and Social Care Trus
City
Belfast
Country
United Kingdom
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Danny McAuley, MD
Phone
+442890 972144
Email
d.f.mcauley@qub.ac.uk
First Name & Middle Initial & Last Name & Degree
Dermot Linden, PhD
Phone
07812008626
Email
dlinden02@qub.ac.uk
First Name & Middle Initial & Last Name & Degree
Danny McAuley, MD
First Name & Middle Initial & Last Name & Degree
Cecilia O'Kane, PhD
First Name & Middle Initial & Last Name & Degree
Dermot Linden, PhD
First Name & Middle Initial & Last Name & Degree
Joe Kidney, MD
12. IPD Sharing Statement
Plan to Share IPD
Undecided
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Hyperoxia Induced Pulmonary Inflammation and Organ Injury: a Human in Vivo Model
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