Can we alleviate consequences of cardiac disease by...
Transcript of Can we alleviate consequences of cardiac disease by...
Can we alleviate consequences of cardiac
disease by dietary intervention?
Gunnar Molland
Health Product Manager
PRODUCTS NO UK TARGET & MISSION
intro FW Maintain optimal health and growth during sea
transfer phase intro SW
primo Plus 3 Prepare for efficient immune response
actio Q Facilitate and support disease handling and recovery
focus lice Plus 4 Reinforcing barriers towards infections and
infestations
focus winter Primarily targeted towards winter ulcers
BioMar Health Products
The heart and circulatory system
MAMMAL
FISH 1 circuit
2 circuits
Low pressure
Coronary supply
High/mod pressure
Only partial coronary supply
Only for the outer compact layer HSMI
CMS
Effects of reduced circulatory output
Reduced (aerobic) metabolic capacity
Risk of ischemia in «underprioritized» tissues
Reduced ability to absorb and transport O2
GROWTH IMMUNE RESPONSE
SKIN WINTER ULCERS ?
GILL DAMAGE AGD ?
How can we influence this by nutrition?
Affecting the pathogens possibility to cause damage
via the host’s immune system
Enhancing the host’s ability to maintain important
physiological processes despite damage
flexible and robust organ systems keeping spare capacity
Differences in structure and function TG vs PL
Triglyceride (fish oils) Phospholipids (krill oil)
Membrane Fat cell
• Non-polar
• Hydrophobic
• Polar
• Hydrophilic - mixes with water
Function
Charac-
teristics
• Main structural component in all cell membranes
• Energy storage
Structural
form
Fatty acids
Glycerol Choline
Phosphate
Glycerol
Fatty acids
Effects of krill oil on heart tissue
Reduced fat in heart tissue in obese rats Increased levels of omega-3 in rat heart
Improves heart function in rats Beneficial regulation of heart genes in rats
7,8
13,213,7
-43%
Krill oil Fish oil Control
Heart triglycerides mmol/g
*LVEDD: left ventricular end-diastolic diameter. ** MI: Myocardial Infarction/Heart attack
EPA and DHA levels in heart phospholipids nmol/mg lipids
EPA levels DHA levels
3618
2
Control
X18
Krill oil Fish oil
119
+112%
Krill oil
252
Fish oil
177
Control
Infarction damage (∆LVEDD*) mm
1,5
2,3
1,0
-35%
Krill oil MI
Control MI
Control Non MI**
58
-42%
Krill oil Control
100 61
-39%
Krill oil Control
100
-72%
Krill oil
28
Control
100
Gene expression levels (markers of stress and inflammation)
ANP TIMP IL-6
4 4
20 20
4 Batetta B., et al. 2009. J Nutr, 139(8):1495-150
20 Fosshaug L. E., et al. 2011. BMC Lipids in Health and Disease, 10(1):245
Results
Treatment
• 8 weeks of daily intake
• 2 g Superba™ krill oil or fish oil
Significantly higher omega-3 index after krill oil treatment compared to fish oil treatment
Subjects
• Healthy male and female subjects
Study details
• Single centre, open-label, randomised two-way crossover study
Study overview
97,981,3
+20%
98,376,8
+28%
[ng*h/(mg*ml)]
EPA in plasma phospholipids
DHA in plasma phospholipids
4,22,5
Fish oil Krill oil
+68%
Omega-3 index
[%*h/g]
Increased presence in blood
Increased uptake in red blood cells
Influence on distribution of EPA/DHA
Fat deposition on salmon hearts
Master UMB n=2700 (291 families)
90%
Shehzad/NVH
50%
Nofima/BioMar feed A
0%
Nofima/BioMar feed B
Last moth before harvesting 5,5-6,7 kg n=40
Heart pathology in HSMI transmission trial
• 1 test feed + 1 control
• 4 replicates = 12 tanks=1 test cell
• 100 fish/tank, 20 g + shredder fish
• 1 week acclimatization
• 6 week feeding before challenge
• 14 week challenge
• Cohabitant challenge, i.e. injection of virus in shedder fish that
are put in all tanks
• Sampling:
1. 0-sampling 6 weeks before start. 8 fish
2. After 6 weeks feeding (befor challenge)
3. 3 weeks post challenge
4. 6, 8, 9, 10 and 12 weeks post challenge
Heart pathology in HSMI transmission trial
Control
wpc
6 8 10 12 14
Sco
re (
1-3
)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
102
wpc
6 8 10 12 14
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Box: 50% of observations Bars: 95% of observations Black line: Median Red line: Mean
Scale 1-3 measures severity of tissue damage. Score 3 is max n=32 (8 fish/tank x 4 tanks)
Mortality during feed trial at commercial site
Located in Mid-Norway, S1-2012
History of HSMI, CMS diagnosed
Feed trial april - september 2013 (harvest)
2 + 2 cages included in feed trial
C2
3,58kg
99’
C6
3,51kg
144’
C4
3,51kg
156’
C5
3,76kg
158’
CMS signs
0
2
4
6
8
10
12
14
Cage 4 Cage 5
0,0
0,5
1,0
1,5
2,0
2,5
apr-mai jun-jul aug-sep
Cage 2
Cage 6
Cage 5
Cage 4
Feed 1
Feed 2
0
2
4
6
8
10
12
14
Cage 6 Cage 2
Mortality during feed trial at commercial site
Pre-trial vs during trial (%) Relative mortality per 2 months during trial
pre
pre
pre
pre
with CMS-pathology
without CMS-pathology
without CMS-pathology
with CMS-pathology Feed 1
Feed 2
We see some very promising indications
Corresponds with documentation from mammals
More analytical work to verify effects
Investigate physiological enhancement as well as
influence on pathology
Conclusions and further work