treatment metabolic
TRANSCRIPT
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Plant Derived Therapeutics for the treatment Metabolic
SyndromeWilliam T. Cefalu, M.D.
Pennington Biomedical Research Center
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Changing Nutrition/Health Paradigm
What food is required for me? Nutritional deficiency:
Iron - Anemia Iodine – Thyroid goiter Vitamin D - Rickets
Identifying essential nutrients required for promoting growth and sustaining life.
Vitamins Essential minerals – Calcium Essential amino acids
1920s-1980s
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Changing Nutrition/Health Paradigm
What does food do to me? Nutritional excess and imbalances
Calories - obesity Fiber – Colon cancer
Identifying nutrients and components that contribute to premature death
Saturated fat Cholesterol Sodium
1950s-1990s
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Seven Countries Study: CHD Events areCorrelated with Saturated Fat
0 5 10 15 20% Calories from Saturated Fat
0
1
2
3
4
5
CHD
Death
s and
MI/1
00 R = 0.84
V
MC
DG
S W
BZ
UN
E
K
Keys, 1970
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Changing Nutrition/Health Paradigm
What does food do for me? Nutritional optimization of quality of life Identification of physiological active
components to prevent or delay premature onset of chronic disease
Phytochemicals Pre/Probiotics Fiber
1990s-Today!
Identification of Phytochemicals
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Phytochemicals as Functional Components
Individual compounds in plants that have evolved in part as protective mechanisms against environmental insult
Phytochemicals with biological activity have had great utility as pharmaceuticals and pest-management agents.
Very few of these potentially active compounds have been examined thoroughly.
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Functional Foods Definition
Generic description of foods, that when ingested, provide demonstrated physiological health benefits beyond simple nutritional value
Expanded Definition Similar in appearance to conventional foods;
Are consumed as part of a usual diet
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How to Be a Functional Food A natural food product can be engineered to
become a functional food by Increasing specific components (Phytochemicals)
to reach a concentration more likely to express health benefits
Adding components not normally present but having a beneficial effect
Replacing a component that is excessive and harmful with one having a beneficial effect
Improving the bioavailability of components having desired health benefits
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Phytochemicals and Reported Sources
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Polyphenols Epicatechin Epigallocatechin Epigallocatechin
gallate
Source: Green tea; grapes, red wine Benefits: Anti-cancer; CHD protective Function: Inhibit chemical carcinogenesis and
tumor formation; inhibit cancer cell growth; antioxidant; reduces free radical/oxidative damage
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Isoflavones Genistein Daidzein
Source: Soybean, flaxseed Benefits: Relieves menopausal symptoms;
prevents osteoporosis; anti-cancer; CHD protective
Function: Estrogen-like activity; inhibit growth of breast cancer cells; stimulate
Ca absorption; lower cholesterol levels
Genistein
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Phytosterols -sitosterol Campesterol -sitostanol
Source: Plant oils Benefits: CHD protective Function: Inhibit cholesterol absorption
-sitosterol
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Carotenoids Lycopene -carotene -cryptoxanthin Lutein
Source: Tomatoes, carrots, yams, cantaloupe, spinach, sweet potatoes; citrus
fruits Benefits: Anti-cancer; CHD protective Function: Antioxidant; free radical scavenger;
induction of cell-cell communication and growth control; inhibit tumor growth
-carotene
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n3-Fatty Acids -linoleic acid Docosahexaenoic
acid Eicosapentaenoic
acid Source: Flaxseed oil, fish oil Benefits: CHD protective; anti-cancer; anti-
inflammatory Function: Lower triglycerides; inhibit platelet
aggregation; affect eicosanoid production
DHA
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Flavonoids Quercetin Apigenin Luteolin Myricetin
Source: Citrus fruits; vegetables Benefits: Anti-cancer; CHD protective Function: Antioxidant; inhibit platelet aggregation;
inhibit cancer cell growth and proliferation; cytotoxic to
cancer cells
Luteolin
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The Promise of Plant Therapeutics Better health through improved nutrition
can:Increase quality of lifeEnhance productivityReduce health-care costs - by preventing or delaying the onset of
chronic disease, i.e diabetes - or improving metabolic factors related to the
disease, i.e. glucose
Health claims need to be verified
with carefully controlled studies
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O
Type 2 diabetes
Years from diagnosis
0 5-10 -5 10 15
Pre-diabetes
Onset Diagnosis
Insulin resistance
Post-Meal glucoseFasting glucose
“Nutraceutical (Botanical/Bioactive)Strategies”
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“Pre-Diabetes”
Type 2 diabetes
Years from diagnosis
0 5-10 -5 10 15
Pre-diabetes
Onset Diagnosis
Insulin secretion
Insulin “inefficiency
Ramlo-Halsted BA, Edelman SV. Prim Care. 1999;26:771-789 Nathan DM. N Engl J Med. 2002;347:1342-1349
Post-Meal glucose
Fasting glucose
Pancreas function
Progressive -Cell Failure
Natural History of Type 2 Diabetes
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Rel
ativ
e R
isk
of M
I or S
trok
e
0
1
2
3
4
5
6
7
NondiabeticThroughout
2.4
>15 YrBefore Dx
10-14.9 YrBefore Dx
3.64
<10 YrBefore Dx
DiabeticThroughout
5.02
3.19
1.0
Hu FB, et al. Diabetes Care. 2002;25:1129-1134.
Non-Diabetic Diabetes
Cardiovascular Risk in Pre-diabetes
Pre-Diabetes
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Type 2 diabetes
Years from diagnosis
0 5-10 -5 10 15
Pre-diabetes
Onset Diagnosis
Insulin resistance
Ramlo-Halsted BA, Edelman SV. Prim Care. 1999;26:771-789 Nathan DM. N Engl J Med. 2002;347:1342-1349
Post-Meal glucose
Fasting glucose
Natural History of Type 2 Diabetes
“Nutraceutical (Botanical/Bioactive)Strategies”
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Phytochemicals and Reported Sources
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Blueberries as a Therapy for Type 2 Diabetes
• Literature Review– Blueberries are a folk remedy in Canada for
treatment of diabetes (Martineau LC et al., Phytomedicine, 2006)
– Blueberries have been found to:• Reduce blood glucose concentrations in rats and
humans (Abidov M et al, 2006 ; DeFuria J et al, 2009)
• Increase glucose uptake in muscle and fat cells (Tri Vuong et al, 2006)
• Protect against obesity in rats (DeFuria J et al, 2009)
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PBRC Blueberry Research Study • Primary Objective
– To evaluate the effect of blueberry bioactives on improving a pathophysiologic parameter contributing to the development of type 2 diabetes in humans
• Hypothesis– Increased consumption of blueberry
bioactives will result in an increase in whole body insulin action, i.e. insulin sensitivity, in pre-diabetic individuals
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Study Design
Baseline
Blueberry Group
Placebo (Control)
Screening
Insulin Sensitivity Test
1 2 3 4 5 6 7 8 9
End
End
Visits (Weeks)
*Randomized*Started consuming smoothies
Hyperinsulinemic Euglycemic Clamp
“Gold Standard” for objectively assessing whole body insulin action
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Nutritional Value (per 16oz) Bioactives PlaceboEnergy, kcal 239 234Carbohydrate, g 48.5 48.6 Fiber, g 4.2 4.3Protein, g 11.9 11.1Fat, g 0.08 0.08 Saturated Fat, g 0.05 0.05
Each subject consumed two 16oz smoothies per day
16 oz Smoothie (Bioactives) =
Nutritional Value of Intervention
Placebo Smoothie
Stull AJ et al. J Nutr. 2010 Oct;140(10):1764-8.
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The Ability of Insulin to Work in All ParticipantsFrom Beginning to End of Study
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
Subject Numbers
% ∆
Ins
ulin
Sen
sitiv
ity
Bioactives Group
Placebo
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Placebo (Control)Group
Bioactives Group
Individual Response in Insulin Sensitivity
Technical Variability
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Blueberry Bioactives Improved Insulin Sensitivity
Blueberry Placebo 0
5
10
15
20
25 22.2
4.9
%∆
Insu
lin S
ensit
ivity
∆ insulin Sensitivity = ability of insulin to work from week 0 to week 6
4-Fold
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Botanicals showing Promise to Favorably modulate Carbohydrate
Metabolism
• Bitter Melon ( Momordica charantia)
• Hoodia (Hoodia gordonii) • Artemisia dracunculas and related sp.
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0 6 120.0
0.5
1.0
1.5
2.0LFD HFD BM
****
#
Insu
lin (n
g/m
l)
Weeks
0 6 120
50
100
150
200
250 LFD HFD BM
Glu
cose
(mg/
dl)
** #
Weeks
A
B
C
Figure 3
0 20 40 60 80 100 120100150200250300350400 HFD
BM
Glu
cose
(mg/
dl)
Time (min)
IPGTT***
******
***#
#
#
D
0 20 40 60 80 100 1200
50
100
150
200HFDBM
Glu
cose
(mg/
dl)
Time (min)
IPITT
# #
***
****** ***
***E
F
LFD HFD BM0
300060009000
1200015000
Plasma leptin concentration in mice(p
mol
/ml)
Groups
****** ##
0 6 120.00.20.40.60.81.01.2 LFD HFD BM
HO
MA
-IR
*
***
###***
Weeks
Bitter Melon and Glucose tolerance
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IRS-2
IRS-1
-actin
Group LFD HFD BM
IR
GLUT4
PI 3K
Akt1
Akt2
Skeletal muscleIRS-1 p (Tyr612)
Akt1 p (ser473)
Insulin - + - + - +Group LFD HFD BM
IRS-1
Akt1
Akt2
Akt2 p (ser474)
Mouse # 1 2 3 4 8 9 7 11 13 15 16 18Insulin - + - + - + - + - + - +Group LFD HFD BM
0.0
0.5
1.0
1.5
2.0
2.5
LFD HFD BM
Basal
Insulin
Fold
of
LFD
at
basa
l
**
**
*
###
Bitter Melon and Glucose tolerance
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Figure 4.
A
B
C14:2 C14:1 C14-OH C16 C18-OH0
5
10
15
20
25
LFD HFD BM
Acy
l ca
rniti
ne
(pm
ol/m
g pr
otei
n)
Long chain acyl carnitine in muscle tissues
*** #####***
###
C3 C4 C4-DC C6 C8:1 C12-OH0
5
10
15
20
25 LFD HFD BM
Acy
l ca
rniti
ne (pm
ol/m
g pr
otei
n)
Short/medium chain acyl carnitine in muscle tissues
#
***
###
####
***
*
*
Bitter Melon Modulates Intracellular lipids
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Hoodia gordonii and Asclepias incarnata (Swamp milkweed) Belong to the
Same Plant Family
cellhealthmakeover.com abnativeplants.com
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12-hydroxy (lineolon)
12-acetyl12-nicotinoyl
12-tigloyl
12-benzoyl
12-cinnamoyl
In collaboration with Analyticon
Natural Diversity of PregnanesIsolated from A. incarnata Extract
ikemagenin
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An approach to the study of Phytochemicals and Human Health
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Phytochemicals and Carbohydrate Metabolism
Alcoholic Extract of Artemisia dracunculus L.Russian Tarragon (PMI 5011)
Ribnicky DM, et al. Am J Physiol Endocrinol Metab. 2007
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• Agriculture SOPs must be developed for each crop (Germination; Plant nutrition Pest management)
Sourcing and Standardization of Phytochemicals
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Artemisia dracunculus in Hydroponics at ARC Greenhouses
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• Agriculture SOPs must be developed for each crop (Germination; Plant nutrition Pest management)
• Optimization of activity and composition
Sourcing and Standardization of Phytochemicals
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Phytochemicals and Carbohydrate Metabolism
Flowering Artemisia dracunculus
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LC-MS Comparison of PMI-5011 Extracts Made from Plants at Different Stages of Development
Flowering Stage
Growth/ Non-flowering Stage
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• Agriculture SOPs must be developed for each crop (Germination; Plant nutrition Pest management)
• Optimization of activity and composition
• Identification of the active components for standardization (Bioactivity guided Fractionization)
Sourcing and Standardization of Phytochemicals
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5011
ADEX
ADEX
ADEX
Bioactivity GuidedFractionization
Identification and Isolation of Phytochemicals
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BMI 29.5
0 4 6 8 12 hours Type 2 DM subjects:
BMI 31.1
BMI 36.8
PTP-1B
-actin
PTP-1B
-actin
PTP-1B
-actin
PTP1B Levels and Artermisa sp (5011) Human Skeletal Muscle
Time Course Studies: 5011
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IRS-1
IRS-2
PTP 1B
IR
PI 3
-Actin
Fraction7 Contr 2 3 4 5 6 7 8 9 10 11 5011D
Akt-p
Insulin Signaling Parameters
Human Skeletal Muscle Culture5011 Fractions
Phosphatase
Wang ZQ et al. Metabolism. 2008 Jul;57(7 Suppl 1):S58-64.Ribnicky DM et al. Am J Clin Nutr. 2008;87(2):472S-5S.
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Isolated Compounds ALR2 PTP-1B PEPCK
4,5-di-O-caffeoylquinic acid * ◊ ○ A - -
Davidigenin * ◊ † ‡ A - -
A - A
2′,4′-dihydroxy- 4- methoxydihydrochalcone * ◊ ○ † ‡ §
A A A
2,4-dihydroxy- 4- methoxydihydrochalcone * ◊ ○ † ‡
- A -
- A -
6-demethoxycapillarisin * ◊ ○
Sakuranetin ▪ ◊ ○
* - confirmed with NMR
◊ - new compound to A . dracunculus
○ - activity reported for the first timeA - active† - dihydrochalcone‡ - new compound to genus Artemisia§ - first report as a constituent of plants
▪ - flavonoidsALR2- Aldose reductase
PTP-1B - Protein tyrosine phosphatase - 1B
PEPCK - Phosphoenolpyruvate carboxykinase
Bioactives Isolated from Artemisia dracunculus and PMI-5011 by Activity-Guided Fractionation
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*2′, 4′–dihydroxy-4-methoxydihydrochalcone
0
50
100
150
200
250
Labrasol 50 mg/kgchalcone
150 mg/kgchalcone
300 mg/kgchalcone
metformin 300mg/kg
bloo
d gl
ucos
e (m
g/dl
)
0 hr
6 hr
**
***
All treatments provided with 66% Labrasol
The Pure Active DMC-2* from Artermisia is Validated in vivo with Comparable Activity to Metformin
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• Agriculture SOPs must be developed for each crop (Germination; Plant nutrition Pest management)
• Optimization of activity and composition
• Identification of the active components for standardization (Bioactivity Guided Fractionization)
• Standardized for Active Components
Sourcing and Standardization of Phytochemicals
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• Agriculture SOPs must be developed for each crop (Germination; Plant nutrition Pest management)
• Optimization of activity and composition
• Identification of the active components for standardization (Fingerprinting)
• Standardized for Active Components
• Stability Assessed
Sourcing and Standardization of Phytochemicals
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-20ºC freezer
22ºC open container
22ºC desiccator
37ºC open oven
Stability of the Extract
PMI-5011 is stable under various storage conditions
Stability was investigated over a period of 7 months by a validated HPLC method
HPLC-Chromatograms of PMI-5011, stored under different conditions
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Sourcing and Standardization of Phytochemicals
Assuring Supply of materials for research
• in vitro studies• Toxicology• in vivo preclinical • clinical
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Animals Received
5011
Placebo
Intervention
Animals: KK-Ay
Intervention: 5011 Total Extract vs control conditionsEndpoint: Insulin and Glucose levels, Muscle signaling
Baseline
• Insulin Stimulation/Muscle Insulin Signaling• Serial Insulin/Glucose
Baseline
Study Design: In vivo Mechanism
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Ribnicky DM, et al. Phytomedicine. 2006 Sep;13(8):550-7.
Body Weight/Food Intake
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Plasma insulin
0 2 4 6 80
5
10
15
20
Control
5011
Weeks of Study
Insu
lin (p
g/m
l)
Mean + SEM, * P<0.05, ** P<0.01.
*** *
Plasma Insulin
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Akt-p
Akt-1
Akt-2
AS160
Mice # 1 2 3 9 10 115011 - - - + + +
Glut4
-Actin
Control 5011
Insulin Signaling ParametersSkeletal Muscle
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Bench to Bedside
Cells tested with Botanical
Human Testing in Several Phases
Animal Testing to MonitorSafety and Effectiveness
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Screening
Screening
5011
Placebo
Intervention
Subjects: Obese, Insulin Resistant, n = 28Intervention: 5011 Total Extract vs PlaceboEndpoint: Insulin Sensitivity (Clamp Procedure)
• Hyperinsulinemic Euglycemic Clamps• Body Composition
Baseline
Baseline
Clinical Trial Study Design
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456789
101112
Pre Post Pre Post
5011
4
6
8
10
5011Placebo
Insu
lin S
ensi
tivity
(mg/
min
/FFM
)
Placebo
BaselineEnd of Study
*
* P < .05
Clinical ResponseInsulin Sensitivity
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Analysis of Compounds from PMI-5011 in
SIM for active compounds in PMI-5011
Standards 6-demethoxycapillarisin & davidigenin
Standards sakuranetin &2′, 4–dihydroxy-4′-methoxydihydrochalcone
SIM plasma analysis
SIM = Selected Ion Monitoring
285257
271285
Phytochemical CharacterizationIn Plasma by LC-MS-SIM
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Time Course of Appearance
0
1
2
3
4
5
6
7
0 45 120 180 240
Minutes after Ingestion
Abu
ndan
ce (X
107 )
Plasma Appearance of Phytochemical
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Mean Levels over 4 hours
0
1
2
3
4
5
6
7
5011 Placebo
Ion 257: davidigenin Ion 271 sakuranetin Ion 285: chalcone
Undetectable
Abu
ndan
ce (x
107 )
Plasma Abundance5011 Metabolites
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Potential Nutraceutical (Phytochemical) Markets
1. Joint health(n3-fatty acids, glucosamine, chondroitin sulfate)
2. Gastrointestinal health(ginger, pepermint, fennel, prebiotics, probiotics)
3. Blood lipids(n3-fatty acids, oat bran, phytosterols)
4. Bone density and skeletal health(phytoestrogens, Ca, Zn)
5. Hormone replacement(isoflavones, arginine, yohimbe)
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6. Body fat/Weight(herbal phen-fen, Cr, garcinia cambogia)
7. Optimal vision(lutein, zeaxanthin)
8. Stress and insomnia(St. John’s Wort, tryptophan)
9. Breast and prostate health(fruits, vegetables, saw palmetto)
10. Carbohydrate Metabolism(Chalcones, Cinnamon polyphenols)
Potential Nutraceutical (Phytochemical) Markets
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The most studied Phytochemical:Wine
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 <0.1 0.1 - 0.3 0.3 - 1 1.0 - 2.0 >2.0
Drinks per Day
RelativeRisk
CVD
Non-CVD
Over 40 prospective studies have documented an inverse relationship between alcohol intake and heart disease
prevention
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We Can’t Put Our Heads in the Sand any Longer !!!
Regarding Plant Therapeutics and Human Health…..