intravenous vitamin c severe sepsis acute lung injury · muhammad ali sepsis - pneumonia june 3,...
TRANSCRIPT
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IntravenousVitamin C
Severe SepsisAcute Lung Injury
Alpha A. (Berry) Fowler, III, MDProfessor of Medicine
VCU Pulmonary Disease and Critical Care Medicine
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I Have No Disclosures
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Bacterial Sepsis
• Approximately 1 million people in the U.S. develop sepsis each year
• 35% to 40% of septic patients develop Acute lung injury
• 25% to 35% of septic lung-injured patients die
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1 Fully Loaded Boeing 747416 Passengers
Patty DukeAbdominal Sepsis
March 29 2016
832 Passengers
Muhammad AliSepsis - Pneumonia
June 3, 2016
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Vitamin C in Disease
Normal Plasma Vitamin C Level
TraumaSepsis
Trauma
Sepsis
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Surgical Sepsis
DetailedStudy of
Lung Tissue
20 Hours
Surgical Sepsis
DetailedStudy of
Lung Tissue
20 Hours
Vitamin C
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Septic Murine Lung Vitamin C Treated Septic Lung
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Surgical Sepsis Surgical Sepsis
Vitamin C Treated
Vitamin C Attenuates Histological Evidence Of Lung Injury
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Lung Water
Sepsis Sepsis VCControl
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Plasma Ascorbate Levels In Human Sepsis
• Subnormal levels a constant feature in septic patients
• Ascorbate levels correlate inversely with the incidence of multiple organ failure
(low levels higher numbers of organs failed)
• Ascorbate levels correlate directly with survival (low levels low survival)
Borrelli et al. Crit Care Med. 1996, 24 (3): 392-397, PMID: 8625625.
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Phase I Safety Trial
• Severe Sepsis
• IRB (April 2010) Enrollment (August 2010)
• Septic Patients: Geographic MRICU patients
• Randomized, double blind, placebo-controlled
• AE: Systemic hypotension, tachycardia, nausea
• 1) Placebo, 2) 50 mg/kg/24 hr, 3) 200 mg/kg/24 hr
• IV VitC ¼ dose infused 6 hours D5%W
• Blood Draw (0, 12, 24, 36, 48, 72, 96 hours)
Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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IV
Padayatty et al. Ann Intern Med. (2004) 140:533
Oral
∆: Intravenous DosingO: Oral Dosing
Pla
sma
Vit
amin
C C
on
cen
trat
ion
µm
ol/
L
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Assessing Organ Injury
SOFA SCORE
ShockExtent of
Pharmacologic SupportRenalFailureBone Marrow
Dysfunction
LiverInjury
RespiratoryFailure
Brain
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Lung(PaO2/FiO2 mm/Hg)
Brain(Coma)
Cardiovascular(Shock)
Liver(Bilirubin)
Bone
Marrow(Platelet)
Renal
Failure(Creatinine)
< 400 1 13-14 1MAP<70
Mm/Hg1 1.2-1.9 1 <150 1
1.2-1.91
< 300 2 10-12 2 Dopamine ≤ 5 µg/kg 2 2.0-5.9 2 <150 22.0-3.4
2
< 200
mechanically ventilated3 6-9 3
Norepi ≤ 0.1 µg/kg3 6.0-11.9 3 <50 3 3.5-4.9 3
< 100
mechanically ventilated4 <6 4
Norepi ≥ 0.1 µg/kg4 >12 4 <20 4 >5 4
Organ Failure Scores
SOFA Score = Sum of Organ Failure Scores
Sequential Organ Failure Assessment Score
SOFA
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Phase I Safety Trial
• 31 patients screened – 24 enrolled and randomized
• Placebo: (4M, 4F, age 54-68 yrs)
• Lo-VitC: (5M, 3F, age 30-70 yrs)
• Hi-VitC: (4M, 4F, age 44-92 yrs)
• SOFA - Placebo: 13.1, SOFA - Lo-Vit C: 11.6
SOFA Hi-Vit C - 12.2
Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Plasma Vitamin C Levels
Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Ascorbate Consumed In Sepsis
• By reduction of plasma free iron
• By the scavenging of aqueous free radicals
• By destruction of dehydroascorbic acid
• Destruction permits uncontrolled oxidant activity
Galley et al. Free Rad Biol Med. 1996, 20 (1): 139-143, PMID: 8903690.
PMID:
8903690
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SOFA Scores
Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Intravenous Vitamin C
• Safe
• Mortality reduced
• Multiple organ failure significantly reduced
• Blood markers inflammation and vascular injury significantly attenuated
Fowler et al. J Translational Medicine 2014;12:32 PMID 24484547
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Plasma Vitamin C AugmentationHuman Studies
• Lowered Incidence of ARDS and MOF in surgically critically ill
• Lowered capillary leak in patients with 50% full thickness burns
• Vit C + selenium + n-acetyl cysteine + Vit E lowered ARDS mortality by 50%(Published in abstract only)
Nathens et al. Ann Surg. 2002, 236 (6): 814-822, PMID: 12454520.Tanaka et al. Arch Surg. 2000, 135 (3): 326-331, PMID: 9041919.Sawyer et al. Crit Care Med. 1989, 17: S153
PMID:
12454520
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Baseline Day 2 Day 3 AM
Day 3Intubation/Mechanical Ventilation
Day 21Day 3 PM
Acute Respiratory Distress Syndrome: E. Coli Sepsis
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Cytokine
Bacteria
Endotoxins
Neutrophil Activation – NET Formation
NETOSIS
FungiOxidants
Proteases
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Alveolar Capillary
Oxidants
Proteases
Proinflammatory lipids
Cytokines
Chemokines
Cell Free DNAActivated Neutrophils
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ARDS Bronchoalveolar Lavage Cytology
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Vitamin C
Vascular Endothelium
Alveolar Epithelium
Alveolar Space
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Vitamin C Infusion
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UM1 Program(Novel Therapies of Lung Diseases)
• Phase II multi-center trial – proof of concept
• Randomized, double blinded, placebo-controlled
• Employ “physiological” and “chemical measures” of efficacy rather than mortality
• Data collected on well-characterized subjects
• Common drug with low toxicity
• Immuno-modulating therapy for ALI
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Vitamin C Infusion for TReatment In Sepsis-Induced
Acute Lung Injury
CITRIS-ALI
Assess Efficacy96-hour Vitamin C Infusion
(200 mg/kg/24 Hours) Septic Acute Lung Injury
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• Multi-Center Trial
❖VCU
❖The Cleveland Clinic
❖The Medical College of Wisconsin
❖The University of Kentucky
❖Emory University (First Trial Year)
• Proposed 170 patients with sepsis-induced ARDS
• Trial completed (November 2017)
CITRIS-ALI
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Hypotheses• Attenuate septic lung injury
(oxygenation index and VE 40)• Attenuate sepsis-induced organ failure
(SOFA Score)• Attenuate injury biomarkers
.
❖ Inflammation❖ Alveolar Epithelial Injury❖ Fibrinolysis❖ Vascular Injury❖ Barrier Function
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Exudative Proliferative Fibrotic
0 2 7 14 21…..Day
“Phases” of ARDS
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0 2 7-1-2-3 10
Sepsis Onset(Risk Period)
Days
Clinical Recognition ofOrgan Injury
Immune CellActivation
MicrovascularThrombosis
Bacteremia, EndotoxemiaCytokine Surge
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Exudative Proliferative Fibrotic
0 2 7 14 21…..Day
Prevention of ARDS
X XXPost Vitamin C Intervention
Timing ofIntervention
Onsetof
ARDSRisk
Period
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BiomarkersBy “Compartment”
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C-Reactive ProteinProcalcitonin
Systemic Inflammation
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Receptor for Advanced
Glycation End Products
(RAGE)C-Reactive ProteinProcalcitonin
Alveolar Epithelial Injury
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C-Reactive ProteinProcalcitonin
Tissue FactorPathway Inhibitor
Receptor for AdvancedGlycation End products
RAGE
Fibrinolysis
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Thrombomodulin
C-Reactive ProteinProcalcitonin
Tissue FactorPathway Inhibitor
Receptor for AdvancedGlycation End products
RAGE
Vascular Injury
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C-Reactive ProteinProcalcitonin
Tissue FactorPathway Inhibitor
Angiopoietin-2Thrombomodulin
Receptor for AdvancedGlycation End products
RAGE
Barrier Function
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0 2 7Active Treatment
200 mg/kg/day50 mg/kg/Every 6 hours
4 days
-1
ONSET LUNG INJURY
1 3 4
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0 2 7
Assessment Schedule
1 3 4
• SOFA Score• Plasma Ascorbate• Biomarkers
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0 2 7-1
Physiological Assessment
1 3 4
OI = Mean Airway Pressure x FiO2
PaO2
VE- 40 = VE
Weight (KG)
PaCO2
40X
. .
Oxygenation IndexVE-40.
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“Responder Phenotype”
• ↓ C-Reactive Protein and Procalcitonin
• ↓ RAGE
• ↑ Tissue Factor Pathway Inhibitor
• ↓ Serum-free Thrombomodulin
• ↓ Angiopoietin-2
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Day 28 Day 60
Epidemiological Assessment(Secondary Outcomes)
❖ Ventilator Free Days❖ ICU Free Days❖ All Cause Mortality
Hospital FreeDays
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Day 1 Day 2 Day 4
Day 7 Day 13
Day 2
Vit C Infusion Started
PMID:
27891260
Fowler et al. World J Crit Care Med. 2017;6:85-90, PMID: 28224112
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Baseline Day 2 Day 7Day 4
Vit C Infusion Started
Baseline Day 4Day 4
Vit C Infusion Started
Day 10
Bharara et al. Case Rep Crit Care. 2016; PMID: 2789160.
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INFECTION
Systemic Inflammatory
ResponseSyndrome
Sepsis
SevereSepsis
SepticShock
Bacteremia
Fungemia
Viremia
Burn
Trauma
Pancreatitis
Vitamin C
Vitamin C
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